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Tsinghua University patents


Recent patent applications related to Tsinghua University. Tsinghua University is listed as an Agent/Assignee. Note: Tsinghua University may have other listings under different names/spellings. We're not affiliated with Tsinghua University, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "T" | Tsinghua University-related inventors


Dispatching method and device for integrated transmission and distribution network

The present disclosure provides a dispatching method and a dispatching device for an integrated transmission and distribution network. The integrated transmission and distribution network includes a transmission network and at least one distribution network. ... Tsinghua University

Checking method, checking system and checking device for processor security

The present disclosure discloses a processor security checking method, system and checking device. The processor security checking method includes: acquiring recording information of data read and write operations between a processor and a peripheral device, where the data read and write operation is a data read and write operation initiated by the processor or a data read and write operation initiated by the peripheral; and determining whether the processor is secure according to the recording information of the data read and write operation and an analysis result on the data read and write operation by the checking device. ... Tsinghua University

Method, checking device, and system for determining security of a processor

The disclosure provides a method, a checking device and a system for determining security of a processor. The method comprises: setting an initial running state of the checking device according to initial running state information of the processor during the target running process, and taking input information of the processor during the target running process as input information of the checking device; causing the checking device to execute a task of the target running process in a manner conforming to predefined behavior to obtain at least one of output information and final running state information of the checking device, wherein the predefined behavior is a standard of hardware behavior of the processor; and determining whether the processor is secure during the target running process according to at least one of the output information and the final running state information of the checking device when the checking device completes the task of the target running process.. ... Tsinghua University

Checking method, checking device and checking system for processor

A checking method for a processor is provided. The checking method first determines whether a checked processor satisfies a security-sensitive condition including one or more of security-sensitive instruction, processor running mode, security-sensitive input/output operation, security-sensitive application, and user-defined security level. ... Tsinghua University

Input and output recording device and method, cpu and data read and write operation method thereof

The disclosure provides an input and output recording device and method, cpu and data read and write operation method thereof. The input and output recording device is provided between a central processor cpu and a peripheral, and is configured to record data read and write operations between the cpu and the peripheral, wherein the data read and write operations comprise a data read and write operation initiated by the peripheral and a data read and write operation initiated by the cpu; the input and output recording device is further configured to request the cpu to process the data read and write operation initiated by the peripheral, and upon receiving an instruction sent by the cpu, send a data packet of the data read and write operation initiated by the peripheral to the cpu. ... Tsinghua University

Method for processing asynchronous event by checking device and checking device

A method for processing an asynchronous event by a checking device and a checking device are provided, the method including: obtaining an instruction position where a checked processor executes an asynchronous event during a target running process; and executing the asynchronous event at the instruction position during executing a task of the target running process in a manner conforming to predefined behavior, wherein the predefined behavior is a hardware behavior standard of the processor. Obtaining the instruction position and executing the asynchronous event at the instruction position may cause the checking device and the checked processor to process the same asynchronous event at the same instruction position. ... Tsinghua University

Method and device for recording memory access operation information

A method and a device for recording memory access operation information are provided by the present disclosure. The method comprises: recording memory access operations between a processor and a memory during a target running process to form an memory access sequence information of the target running process, wherein each of the memory access operation information in the memory access sequence information includes a memory access type, a memory access address and a memory access data; and determining a final storage state of the memory during the target running process according to the memory access sequence information of the target running process. ... Tsinghua University

Method for detecting surface coating performance of cathode active material

A method for detecting a surface coating performance of a cathode active material comprising: providing an acid solution with a predetermined concentration; putting a coated cathode active material in a container; adding the acid solution into the container until the coated cathode active material is completely soaked to form a solid liquid mixture; sealing the container, heating and stirring the solid liquid mixture, and recording a series of ph values of a liquid phase of the solid liquid mixture at different points in time; and determining the surface coating performance of the coated cathode active material by comparing the recorded ph values with standard ph values. A method for detecting a surface coating performance of a cathode active material by detecting metal ion concentrations in the solid liquid mixture is also provided.. ... Tsinghua University

Wavelength multiplexed fourier ptychographic microscopy system and method

The present disclosure relates to fourier ptychographic microscopy systems and methods. The system includes: a three-color led array; a microscope, configured to obtain image information with multi-wavelength, and magnify to generate magnified image information; an rgb camera configured to acquire a first color image with a first resolution based on the magnified image information; and a controller, configured to synchronously control the three-color led array and the rgb camera, in which the three-color led array is further configured to display a plurality of illumination patterns, the rgb camera is further configured to acquire synchronously a plurality of first color images, and the controller is further configured to restore a single second image with a second resolution according to the plurality of first color images, and the first resolution is less than the second resolution. ... Tsinghua University

Method and device for adjusting array structure of omnidirectional electromagnetic acoustic transducers for imaging defect profile of metal plate

A method for adjusting array of omnidirectional emats includes: uniformly arranging n emats in a detection region of a metal plate; calculating positions of scattering points according to amplitudes and travel times of guided wave scattering signals, and forming a first defect profile curve by performing three smooth spline interpolations on coordinate data of positions of scattering points; calculating curvatures of points on the first defect profile curve by solving a first and second derivatives of a function of the first defect profile curve; determining an array adjustment region by comparing the curvature with a preset threshold, adjusting the array and calculating a second defect profile curve; and performing data fusion on the first and second defect profile curves to form a defect profile image of the metal plate.. . ... Tsinghua University

Imaging method and device based on guided wave scattering of omni-directional magneto-acoustic transducers

An imaging method based on guided wave scattering of omni-directional emats includes: selecting an nth omni-directional emat from n omni-directional emats uniformly arranged in a detection region of a metal plate to be detected as an excitation emat; selecting m omni-directional emats as omni-directionally receiving emats to omni-directionally receive an ultrasonic guided wave signal, and calculating a travel time and intensity of the ultrasonic guided wave signal; judging whether the excitation emat and the omni-directionally receiving emats form a scattering group, if yes, calculating a position of a scattering point; judging whether the position of the scattering point is within a preset scattering region, if yes, determining the position of the scattering point as an effective scattering point; repeating the above steps until all n omni-directional emats have excited omni-directional ultrasonic guided waves, and performing curve fitting on all effective scattering points to obtain a defect profile image.. . ... Tsinghua University

Carbon-coated ternary positive electrode material, preparation method therefor, and lithium ion battery

A method for preparing a carbon-coated ternary positive electrode material has steps of preparing a ternary positive electrode material precursor, and preparing a suspension of the ternary positive electrode material precursor. Lithium acrylate is added to the suspension of the ternary positive electrode material precursor according to the molar ratio of li:(ni+co+mn) being 1.03-1.05:1. ... Tsinghua University

Video analysis

The present disclosure relates to video analysis. An apparatus includes: a foreground extracting section, for extracting an insect foreground image from an input video; and a 3d posture reconstruction section, including a feature point solving unit for calculating initial feature points in the insect foreground image and using calibrated feature points in the insect foreground image to generate a feature point signal subspace, training an iteration matrix based on the initial feature points and the calibrated feature points under the constraints of the feature point signal subspace, so as to limit the iteration matrix in the feature point signal subspace, and solving ultimate feature points of an insect body in each video frame by iterating the initial feature points with the trained iteration matrix, and a posture calculating unit that reconstructs a posture of the insect by the ultimate feature points of the insect body. ... Tsinghua University

Gas-steam combined cycle centralized heat supply device and heat supply method

The present invention relates to a gas-steam combined cycle centralized heat supply device and a heat supply method. The gas-steam combined cycle centralized heat supply device comprises a gas-steam combined cycle system connected with a thermal station through a heating network return water heating system; the gas-steam combined cycle system comprises a gas turbine connected with a direct contact type flue gas condensation heat exchanger and a steam turbine via a waste heat boiler; the thermal station comprises a hot water type absorption heat pump and a water-water heat exchanger; the heating network return water heating system comprises a steam type absorption heat pump for recovering flue gas waste heat and a steam-water heat exchanger. ... Tsinghua University

07/26/18 / #20180210187

Rapid three-dimensional microscopic imaging system

The three-dimensional microscopic imaging system includes: a microscope; a field diaphragm; a narrow-band filter, configured to perform narrow-band filtering; a beam-splitting grating, configured to duplicate a beam into beams with different angles; a lens array with different focal length, configured to perform different phase modulation to each beam with different angles; a micro lens array, configured to modulate the beams with different angles that pass through the lens array with different focal length respectively to different spatial locations at a back focal plane of the micro lens array respectively; and an image sensor configured to record an image corresponding to the modulated beams at the back focal plane of the micro lens array. The system has a simple structure, a cheap cost, and a relatively weak exciting light, and is suit for living samples, and has the adjustable intervals of imaging depths.. ... Tsinghua University

07/19/18 / #20180203221

Phase microscopy system and method

A phase microscopy system and method are provided in the present disclosure. The system includes: an optical source, configured to generate collimated light; an object arrangement component, configured to provide a mask and a sample; a microscopic imaging component, including a microscope and a sensor, the microscope being configured to project light that passes successively through the mask and the sample into the sensor to capture an image; and a control component, configured to reconstruct phase information of the sample based on the image through both the sample and the mash and a pre-stored reference image of the mask, in which the pre-stored reference image is pre-acquired by the phase microscopy system without providing the sample under a same light condition. ... Tsinghua University

07/19/18 / #20180203218

Rapid three-dimensional multispectral microscopic imaging system

An imaging system is provided, which includes: a microscope; a field diaphragm; a one-dimensional beam-splitting grating, configured to duplicate a beam after passing through the first 4f system into beams with different angles; a phase modulation component, configured to perform different phase modulations to the beams with different angles respectively; a blazed grating, configured to perform dispersion to the beams with different angles passing through the phase modulation component at a dimension orthogonal to the beam-splitting grating; a micro lens array, configured to make the beams with different angles passing through the blazed grating to map to different locations on a back focal plane of the micro lens array; an image sensor, configured to image the back focal plane of the micro lens array. The system may recover three-dimensional information and multispectral information of the sample simultaneously from a single image.. ... Tsinghua University

07/19/18 / #20180201998

Compositions and methods for detection of genetic deafness gene mutation

In one aspect, a kit for detection of genetic gene mutation is provided, which is used for detecting nine deafness gene mutations of caucasian populations, including gjb2 (c.35delg, c.167delt, c.132g>c, and c.269t>c), gjb6 (c.del309kb), slc26a4 (c.707t>c and c.1246a>c), 12s rrna (m.1555a>g and m.7444g>a). In another aspect, a method is provided, which method comprises labeling a target molecule with a luminophore, coupling the target molecule to a particle, and binding to a probe molecule on microarray. ... Tsinghua University

07/19/18 / #20180201388

Heat managing and dispersing structure and unmanned aerial vehicle using the same

A heat management structure able to disperse heat but also able to retain a proper working heat includes a heat dissipation layer, a receiving member, and a heat pipe. The receiving member is configured to receive a heating member. ... Tsinghua University

07/12/18 / #20180197642

Baffle structure for channel

A channel baffle structure comprises a pipe, a swing check plate and a driving apparatus, wherein the main part of the swing check plate is located inside the pipe, and the driving apparatus is disposed outside the pipe. A connection structure is used for connecting the driving apparatus and the swing check plate. ... Tsinghua University

07/12/18 / #20180196244

Method for multi-color fluorescence imaging under single exposure, imaging method and imaging system

The present disclosure relates to a method for multi-color fluorescence imaging under a single exposure, an imaging method and system. The imaging system includes: a fluorescence microscope, configured to obtain a real image of the sample; a spatial mask, disposed behind the fluorescence microscope, and configured to perform mask modulation on the real image of the sample; a 4f system, disposed behind the spatial mask, in which the real image of the sample passes through the spatial mask to the 4f system; an optical granting, disposed on a fourier plane in middle of the 4f system, and configured to split the real image of the sample to obtain a split real image; and an image sensor, configured to obtain the split real image to obtain an image of the sample. ... Tsinghua University

07/12/18 / #20180196078

Wiping-type sample sampling and feeding device, card reading apparatus, and gate machine apparatus

The present invention discloses a wiping-type sample sampling and feeding device, a card reading apparatus, and a gate machine apparatus. The wiping-type sample sampling and feeding device comprises a thermally desorbing portion for analyzing a substance; a wiping-type sampling portion for wiping the substance on a card or certificate and includes a first wheel, a second wheel and a wiping conveyor belt that travels between the first and second wheels along a first direction; and a card/certificate conveyor portion including a card carrying belt configured to convey a card or certificate along a second direction so that the card or certificate can contact with the wiping conveyor belt during conveyance of the card or certificate, thereby the wiping conveyor belt wipes a surface of the card or certificate, wherein the second direction is substantially perpendicular to the first direction.. ... Tsinghua University

07/12/18 / #20180195979

Inspection devices and methods for inspecting a container

A method for inspecting a container and an inspection device are disclosed. X-ray scanning is performed on the inspected container to obtain a scanned image. ... Tsinghua University

07/12/18 / #20180195977

Inspection devices and methods for detecting a firearm in a luggage

An inspection device and a method for detecting a firearm in a luggage are disclosed. The method comprises: performing x-ray inspection on the luggage to obtain a transmission image; determining a plurality of candidate regions in the transmission image using a trained firearm detection neural network; and classifying the plurality of candidate regions using the detection neural network to determine whether there is a firearm included in the transmission image. ... Tsinghua University

07/05/18 / #20180190980

Methods for manufacturing graphene based material

A method for manufacturing graphene-based material is disclosed. A graphene oxide dispersion includes graphene oxide dispersed in solvent. ... Tsinghua University

07/05/18 / #20180190979

Methods for manufacturing graphene based material

A method for manufacturing graphene-based material is disclosed. A graphene oxide dispersion includes graphene oxide dispersed in solvent. ... Tsinghua University

07/05/18 / #20180190482

Ion migration tube and method of operating the same

The present disclosure provides an ion migration tube and a method of operation the same. The ion migration tube includes an interior space and an ion gate disposed within the interior space, the interior space includes an ionization region having an absolute value of potential v1 and a migration region. ... Tsinghua University

07/05/18 / #20180189945

Image data processing method, device and security inspection system based on vr or ar

A method, a device and a security system for image data processing based on vr or ar are disclosed. In one aspect, an example image data processing method includes reconstructing, based on three-dimensional (3d) scanned data of a containing apparatus in which objects are contained, a 3d image of the containing apparatus and the objects contained in the containing apparatus. ... Tsinghua University

06/28/18 / #20180183703

Communication locality oriented high-radix interconnection network and adaptive routing algorithm design

This invention proposes a new communication locality oriented high-radix (clhr) network. In this hierarchical architecture, the lowest level includes routers or servers, called level-0; the upper level is composed by groups of routers or servers, called level-1; for the highest level, a number of level-(l−1) groups establish level-1 group. ... Tsinghua University

06/21/18 / #20180175294

Organic electroluminescent device and manufacturing method thereof

Disclosed is an organic electroluminescent device, comprising a substrate and light emitting units formed in sequence on the substrate, characterized in that, each of the light emitting units comprises a first electrode layer (1), a light emitting layer (2) and a second electrode layer (3), the light emitting layer comprises a host material and a dye, the host material is made of materials having both electron transport capability and hole transport capability; at least one material in the host material has a ct excited triplet state energy level t1 greater than its n-π excited triplet state energy level s1, and t1-s1≤0.3 ev; or, at least one material in the host material has a ct excited triplet state energy level t1 greater than its n-π excited triplet state energy level s1, and t1-s1≥1 ev, with the difference between its n-π excited second triplet state energy level and its ct excited first singlet state energy level being in the range of −0.1 ev to 0.1 ev. The organic electroluminescent device configuration can sufficiently utilize the triplet state energy in the host material and the dye to increase the luminous efficiency and prolong the service life of the device.. ... Tsinghua University

06/21/18 / #20180172604

Movable ray inspection system and ray inspection method for a container

A movable ray inspection system used to be mounted in a container yard to inspect an object within a container is provided. The movable ray inspection system includes: a ray generator device configured to emit a ray, a ray receiving device configured to receive the ray, and at least one chamber for receiving the ray generator device and the ray receiving device therein. ... Tsinghua University

06/14/18 / #20180164449

Radiation detection apparatus and method, data processing method and processor

This disclosure provides a radiation detection apparatus and a method, a data processing method and a processor, which relates to the field of radiation detection technology. Wherein, the radiation detection apparatus of this disclosure comprises: a radiation detector which generates an electrical signal by interacting with x-rays; an analog-to-digital converter (adc) which is coupled to the radiation detector and transmits the electrical signal to a waveform data; and a data processor which receives the waveform data from the adc, determines the number of single photon signals according to the waveform data, and determines whether an integral signal and/or a count signal of the waveform data will be used for imaging according to the number of the single photon signals.. ... Tsinghua University

06/14/18 / #20180163188

Engineering of a minimal sacas9 crispr/cas system for gene editing and transcriptional regulation optimized by enhanced guide rna

The presently claimed invention offers programmable and precise regulation of cas9 functions by utilizing a set of compact cas9 derivatives created by deleting conserved hnh and/or rec-c domains based on the structural information across variant class 2 crispr effectors. In addition, a novel strategy for engineering the dimeric grna-guided nuclease by splitting the mini-dsacas9 and fusing the foki domain right after the split point is claimed to increase the on-target dna cleavage efficiency and potentially reduce the off-target effect because of a closer proximity of dimeric foki nuclease to the target sequence. ... Tsinghua University

06/07/18 / #20180156741

Inspection devices and inspection methods

Inspection devices and inspection methods are disclosed. The inspection method includes: performing x-ray scanning on an object being inspected so as to generate an image of the object being inspected; dividing the image of the object being inspected to determine at least one region of interest; detecting interaction between a cosmic ray and the region of interest to obtain a detection value; calculating a scattering characteristic value and/or an absorption characteristic value of the cosmic ray in the region of interest based on size information of the region of interest and the detection value; and discriminating a material attribute of the region of interest by means of the scattering characteristic value and/or the absorption characteristic value. ... Tsinghua University

06/07/18 / #20180155853

Preparation method of para-aramid nanofibers

The present invention relates to a preparation method of para-aramid nanofibers, and belongs to the technical field of novel polymer materials. The para-aramid nanofibers prepared in the present invention have a diameter of 10-100 nm, and a length of hundreds of microns. ... Tsinghua University

05/24/18 / #20180146192

Encoding method, decoding method and device thereof

An image encoding method, decoding method and corresponding device, and intraframe pixel prediction method. The image encoding method comprises: a step of pixel segmentation, segmenting pixels in an image frame; a step of pixel value prediction, respectively performing a pixel value prediction process to obtain a first prediction value for each of pixels in a current block to be encoded; a step of residual calculation, calculating a residual for each of the pixels in the current block to be encoded; a step of discrete cosine transform, quantization and entropy encoding, performing discrete cosine transform, quantization and entropy encoding with respect to a residual block corresponding to the current block to be encoded obtained in the residual calculation step, wherein the quantized residual block is used in a pixel value reconstruction step at an encoding end, and the entropy encoded residual block is sent to a decoding end; and a pixel value reconstruction step, reconstructing a pixel value of the previously-encoded pixel, wherein the reconstructed pixel value is used in the pixel value prediction step. ... Tsinghua University

05/24/18 / #20180139935

Steel structure cage for marine crustacean aquaculture and integration thereof into vertical fish-crustacean aquaculture system

A steel structure cage for marine crustacean aquaculture and integration thereof into a vertical fish-crustacean aquaculture system are disclosed. The steel structure cage includes a steel frame, top, side and bottom net systems, a ballast tank system, and steel grooves. ... Tsinghua University

05/17/18 / #20180138553

Lithium ion battery stacking device

A lithium ion battery stacking device comprising a separator releasing mechanism, a stacking mechanism, and a collecting mechanism is provided. The separator releasing mechanism is configured to be loaded with a separator and release the separator. ... Tsinghua University

05/17/18 / #20180138510

Cathode electrode material and lithium sulfur battery using the same

A cathode electrode material and a lithium sulfur battery are disclosed. The cathode electrode material includes the cathode binder. ... Tsinghua University

05/17/18 / #20180138509

Cathode electrode material and lithium sulfur battery using the same

A cathode electrode material and a lithium sulfur battery are disclosed. The cathode electrode material includes a sulfur containing cathode active material, a conducting agent, and a cathode binder. ... Tsinghua University

05/10/18 / #20180128737

Method for analyzing molecular weight of the poly-p-phenylene terephthalamide

A method for analyzing molecular weight of the poly-p-phenylene terephthalamide (ppta) utilizing near infrared spectrum is provided for reducing the time required to analyze the molecular weight of ppta. The method uses ppta samples to build a spectrum-viscosity fitting curve. ... Tsinghua University

05/03/18 / #20180120430

Electromagnetic wave imaging system and antenna array signal correction method

An electromagnetic wave imaging system and a method of correcting an antenna array signal are disclosed. In an example, the electromagnetic wave imaging system may include an antenna array, configured to receive electromagnetic wave from a target object and convert the electromagnetic wave into an electrical signal; a signal processing unit, configured to process the electrical signal to obtain an image of the target object; and a distance measuring device, configured to measure a distance of the target object from the antenna array, wherein the signal processing unit corrects the electrical signal based at least in part on the measured distance.. ... Tsinghua University

04/12/18 / #20180100804

Method for inspecting aging state of silicone rubber composite insulating material

A method for inspecting an aging state of a silicone rubber composite insulating material comprises the following steps: bombarding, for multiple times and by a pulsed laser beam, selected points on a surface of a silicone rubber composite insulating material to be inspected to generate a plasma; collecting spectrum information emitted by the plasma at each bombardment, and extracting, from the collected spectrum information, a spectral property indicator of a specific constituent element of the silicone rubber composite insulating material at each bombardment; and determining aging state information of the silicone rubber composite insulating material according to the change pattern of the spectral property indicator of the specific constituent element with respect to the bombardment depth. The method enables the rapid and accurate inspection of an aging state of a silicone rubber composite insulating material, and avoids the destructive tests required in the prior art.. ... Tsinghua University

03/29/18 / #20180090741

Lithium ion battery

The present disclosure provides a lithium ion battery comprising a base, a winding column, a shell, a cover cap, and a cell. The winding column is disposed on the base. ... Tsinghua University

03/29/18 / #20180090294

X-ray generating apparatus and x-ray fluoroscopyimaging system equipped with the same

The present invention provides an x-ray generating apparatus and an x-ray fluoroscopy imaging system comprising the same. The x-ray generating apparatus comprises: an electron accelerator, an electron emission unit, and a target; and a shielding and collimating device, including a shielding structure and multiple collimators arranged in the shielding structure, wherein the collimators are thin gaps extending from the target to an exterior surface of the shielding structure and having an axis transverse an electron beam shooting the target, and at least two collimators forming different angles with the electron beam are arranged on the same side of a plane contains the electron beam shooting the target, and the planes where the collimators locate form angles from 30 degrees to 150 degrees with the electron beam shooting the target, to draw out planar beams having different draw-out angles, each having uniform intensity distribution in its respective plane.. ... Tsinghua University

03/29/18 / #20180088920

Mobile transparent computing implement method based on machine code migration

A mobile computing implementation method is based on machine code migration, and permits mobile devices to directly use machine codes generated by other mobile devices, so that generated machine codes can be shared between devices and implemented directly, without complex intermediate steps. The method can include techniques for machine code generation and extraction and os binder operation, and mechanisms for failure recovery and garbage collection. ... Tsinghua University

03/22/18 / #20180084632

Neutron generation apparatuses, neutron imaging devices and imaging methods

A neutron generation apparatus, a neutron imaging device and an imaging method are disclosed. The neutron imaging device includes a neutron generation apparatus for generating a continuous energy spectrum neutron beam; a neutron detector for receiving a neutron beam which penetrates an object being inspected to obtain an electrical signal; a data collection circuit coupled to the neutron detector, for converting the electrical signal into a digital signal; and a data processing apparatus coupled to the data acquisition circuit, for obtaining images of the object being inspected under neutrons of different energy spectrums based on the digital signal. ... Tsinghua University

03/22/18 / #20180080346

Method and system of efficiency evaluation of rcaes system

An efficiency evaluation method of an rcaes system is disclosed, and the method includes calculating electric energy charged by an electric power system in a compression process, calculating electric energy discharged to the electric power system in an expansion process, and calculating a ratio of the electric energy discharged in the expansion process to that charged in the compression process, and taking the ratio as an efficiency of the whole rcaes system; wherein gas in operation is ideal gas, air mass flow rates in the compression and expansion processes are known and constant in operation, an isothermal model is adopted for the casv of which the temperature is the same with ambient circumstances, and the temperature and pressure of compressed air after throttling become constant. A corresponding system is also disclosed.. ... Tsinghua University

03/22/18 / #20180079003

Additive manufacturing device utilizing eb-laser composite scan

An additive manufacturing device utilizing an electron beam and laser integrated scanning comprises: a vacuum generating chamber (1); a worktable means having a forming region at least provided in the vacuum generating chamber (1); a powder supply means configured to supply a powder to the forming region; an electron-beam emission focusing and scanning means (6) and an laser-beam emission focusing and scanning means (7) configured in such a manner that a scanning range of the electron-beam emission focusing and scanning means (6) and a scanning range of the laser-beam emission focusing and scanning means (7) cover at least a part of the forming region; and a controller configured to control the electron-beam emission focusing and scanning means (6) and the laser-beam emission focusing and scanning means (7) to perform a powder integrated-scanning and forming treatment on the forming region.. . ... Tsinghua University

03/15/18 / #20180074217

Slow neutron detection device

A slow neutron detection device is disclosed, comprising: a first slow neutron converter and a second slow neutron converter, and a readout electrode wire set and cathode wire sets arranged between the first slow neutron converter and the second slow neutron converter. By arranging a readout circuit between the two slow neutron converters, an electron drift distance is reduced by half without changing a dimension of the detection device, and an average over-threshold probability of a signal is increased.. ... Tsinghua University

03/08/18 / #20180067089

System for measuring carbon emission in power system

The present disclosure provides a system for measuring carbon emissions in a power system. The system includes: generation carbon meters, distributed respectively in generators in the power system; network carbon meters, distributed respectively in nodes in the power system; consumption carbon meters, distributed respectively in consumers in the power system; and a center server, in which each carbon meter is configured to collect data for measuring the carbon emissions. ... Tsinghua University

03/01/18 / #20180056295

Liquid storage and release assembly and liquid storage and release chip

A liquid storage and release chip provided according to the present application includes a structural layer and an elastic cover sheet. An end surface of one side of the structural layer is provided with a liquid storage cell and a liquid quantitation cell, the liquid storage cell and the liquid quantitation cell are separated by a common partition wall, and the partition wall is provided with a valve opening passing through end surfaces of two sides of the structural layer. ... Tsinghua University

03/01/18 / #20180056290

Sample collection chip

A sample collection chip is disclosed in this application, which includes a chip body. The chip body is provided therein with a collection channel and a sample quantitation cell. ... Tsinghua University

02/22/18 / #20180053938

Electrode binder, cathode electrode material, and lithium ion battery

An electrode binder, a cathode electrode material and a lithium ion battery are disclosed. The cathode electrode material includes the cathode binder. ... Tsinghua University

02/15/18 / #20180047987

Anode electrode material and lithium ion battery using the same

An anode electrode material and a lithium ion battery are disclosed. The anode electrode material includes an anode binder. ... Tsinghua University

02/15/18 / #20180047826

Semiconductor structure and method for forming the same

A semiconductor structure and a method for forming the semiconductor structure are provided. The semiconductor structure includes: a substrate, at least a part of an upper surface of the substrate being a nonpolar surface or a semi-polar surface including nitride semiconductor crystals; an interface layer formed on the nonpolar surface or the semi-polar surface, and including at least one selected from a nitride and an oxynitride; and a metal layer formed on a surface of the interface layer away from the substrate.. ... Tsinghua University

02/08/18 / #20180041675

Telecentric illumination and photographing system for detection of marine microscopic organisms

A telecentric illumination and photographing system for detection of marine microscopic organisms includes an optical path module and an illumination drive module, where the optical path module includes: an led light source, a light homogenizing rod, a decoherence light homogenizing sheet, a diaphragm, a telecentric collimation camera, where a light beam emitted from the diaphragm is incident into a microscopic organism area with uniform illuminance after passing through the telecentric collimation camera; and a telecentric imaging camera, matching the telecentric collimation camera to receive an illumination beam passing through the microscopic organism area and output the illumination beam to an imaging unit, to obtain an imaging result of uniform illuminance. Further, the illumination drive module enables the led light source to work in a stable state in which light emitting intensity is constant, thereby improving current output accuracy.. ... Tsinghua University

02/08/18 / #20180041573

Method for detecting abnormal load in cloud computing oriented online service

Disclosed are a method and device for detecting an abnormal load. The method includes: collecting data of each load item in all hosts; pre-processing to obtain a second sequence corresponding to each load item; obtaining a coefficient matrix and a detail vector; computing a weighted mean of abnormal load probabilities of all the coefficient vectors, to obtain an abnormal load probability of each second sequence; comparing the abnormal load probability with a confidence interval, and judging whether there is an abnormal load, and judging that there is no abnormity in the corresponding second sequence if the abnormal load probability of each second sequence is in the confidence interval; judging whether there is an abnormal load according to data of all load items and the abnormal load probability of each second sequence; and finding a bearing host that has the abnormal load from the current online service.. ... Tsinghua University

02/08/18 / #20180041036

Reactive power optimization method

A reactive power optimization method for integrated transmission and distribution networks related to a field of operation and control technology of an electric power system is provided. The reactive power optimization method includes: establishing a reactive power optimization model for a transmission and distribution network consisting of a transmission network and a plurality of distribution networks, in which the reactive power optimization model includes an objective function and a plurality of constraints; performing a second order cone relaxation on a non-convex constraint of a plurality of distribution network constraints of the plurality of constraints; and solving the reactive power optimization model by using a generalized benders decomposition method so as to control each generator in the transmission network and each generator in the plurality of distribution networks.. ... Tsinghua University

02/08/18 / #20180038835

Device and method for detecting defect in main shaft of wind turbine

The present disclosure provides a device and method for detecting a defect in a main shaft of a wind turbine. The device includes: an excitation source, configured to generate an electromagnetic ultrasonic guided wave signal; a nickel strap, magnetized and disposed on an outer surface of an end of the main shaft; a coil, disposed at the nickel strap, configured to receive the electromagnetic ultrasonic guided wave signal such that the electromagnetic ultrasonic guided wave signal propagates in the main shaft, the coil and the nickel strap being configured to transform the electromagnetic ultrasonic guided wave signal propagating in the main shaft into an electrical signal by electromagnetic induction; a signal collector, configured to collect the electrical signal and transform the electrical signal into guided wave detection data and a wireless communication component, configured to transmit the guided wave detection data to a remote equipment.. ... Tsinghua University

02/01/18 / #20180034277

Method and device for controlling distributed generator in distribution system

The present disclosure provides a method and a device for controlling a distributed generator in a distribution system. The method includes: extracting a first statistic feature of a load at each bus; extracting a second statistic feature of a distributed generator at each bus; establishing a probability distribution set of each first and second statistic feature; determining security constraints of the distribution system; obtaining a bilinear matrix inequality constraint by using a c-var approximation algorithm and a duality algorithm based on the probability distribution set and on the security constraints; determining an objective function to maximize a total installed capacity of the distributed generators; solving the objective function according to the bilinear matrix inequality constraint to obtain an installed capacity of each distributed generator; and controlling an access of each distributed generator according to the installed capacity. ... Tsinghua University

02/01/18 / #20180034029

Composite separator and preparation method therefor, and lithium-ion battery

A composite separator is disclosed. The composite separator includes a base membrane, and a composite gel composited with the base membrane. ... Tsinghua University

02/01/18 / #20180034027

Composite separator, method for making the same, and lithium ion battery using the same

A composite separator comprises a non-woven fabric-polymer composite separator substrate and a composite gel combined with the non-woven fabric-polymer composite separator substrate. The composite gel comprises a gel polymer and a nano-barium sulfate whose surface is modified with lithium carboxylate group. ... Tsinghua University

01/25/18 / #20180022301

In-vehicle detection system and power supply system and power supply controller

The present disclosure discloses an in-vehicle detection system and power supply system and power supply controller, which relates to the power supply control field. The power supply system comprises a low-power generator; a battery pack for supplying power to the in-vehicle detection system; a charger electrically connected to the low-power generator and the battery pack, respectively; and a power supply controller electrically connected to the battery pack and the low-power generator, respectively. ... Tsinghua University

01/18/18 / #20180017658

Dual axis solar tracker

A dual axis solar tracker is provided. The dual axis solar tracker includes a moving platform, a fixed platform, a serial chain, a parallel chain and a driving device. ... Tsinghua University

01/11/18 / #20180013073

Thermally-activated sensitized phosphorescent organic electroluminescent device

A thermally activated, sensitized phosphorescence organic electroluminescence device includes a luminescent layer formed of a host material consisting of two materials, one being a hole transport material, and the other an electron transport material, at least one which is a thermally activated delayed fluorescence material. The host material is doped by a phosphorescent dye. ... Tsinghua University

01/04/18 / #20180002174

Device and method for generating high-purity hydrogen by biomass pyrolysis-chemical looping combustion

The present invention discloses a device and method for generating high-purity hydrogen by biomass pyrolysis-chemical looping combustion. The device comprises a biomass pyrolysis unit, a chemical looping hydrogen generation unit and a waste heat recovery unit; the biomass pyrolysis unit comprises a vertical bin, a screw feeder, a rotary kiln pyrolysis reactor and a high temperature filter; the chemical looping hydrogen generation unit comprises a path switching system of intake gas end, at least one packed bed reactor and a path switching system of tail gas end, wherein the packed bed reactor is composed of three parallel packed bed reactors i, ii and iii, which are continuously subjected to fuel reduction-steam oxidation-air combustion stages (steam purging stage) successively; the waste heat recovery unit comprises a waste heat boiler, a cooler and a gas-liquid separator. ... Tsinghua University

01/04/18 / #20180002173

Pilot plant for chemical looping hydrogen generation using single-column packed bed and hydrogen generation method

A pilot plant for chemical looping hydrogen generation using a single-column packed bed and hydrogen generation method. The plant has a feeding system, reaction system, tail gas treatment and analysis system, and auxiliary system. ... Tsinghua University

12/14/17 / #20170358168

Systems and methods for wireless charging stations

Block chain based, decentralized transaction settlement systems and methods for wireless electric vehicle charging stations which enables real-time monitoring of electric vehicle charging demand for distribution system managers. The system is operable to enable easy implementation of rebate programs for electric vehicle owners, as well as charging station owners, and provides a secure, cost efficient, and transparent transaction settlement system using block chain software technology.. ... Tsinghua University

12/14/17 / #20170356057

Microparticle based biochip systems and uses thereof

This invention relates generally to the field of analyte assays. In particular, the invention provides a device for analyzing an analyte, which device comprises, inter alia, various means for moving analytes and other items to facilitate binding between analytes and their binding reagents immobilized on a surface and to facilitate clearance of undesirable items away from analyte-binding reagent interaction area to reduce background noise in the assay. ... Tsinghua University

12/14/17 / #20170354967

Lab-on-chip system for analyzing nucleic acid

This invention relates generally to the field of nucleic acid detection. In particular, the invention provides a lab-on-chip system for analyzing a nucleic acid, which system comprises, inter alia, controllably closed space, and a target nucleic acid can be prepared and/or amplified, and hybridized to a nucleic acid probe, and the hybridization signal can be acquired if desirable, in the controllably closed space without any material exchange between the controllably closed space and the outside environment. ... Tsinghua University

12/07/17 / #20170352813

Organic electroluminescent device

The present invention discloses an organic electroluminescence device, comprising a luminescent layer, wherein, a host material of the luminescent layer comprises a thermally activated delayed fluorescence material, the host material is doped by a dye, and the dye comprises at least one phosphorescent dye. The present invention employs a thermally activated delayed fluorescence material, whose difference between the triplet state energy level and the singlet state energy level (Δest) is relatively small. ... Tsinghua University

12/07/17 / #20170351228

Method for regulating primary frequency of power grid based on air conditioning load cluster in large building

The present disclosure relates to a method for primary frequency regulation of an electric network based on large building air conditioning loads cluster. The method includes the use of a two layer control structure with a central coordinating layer and a local control layer. ... Tsinghua University

11/30/17 / #20170347105

Quantization method and apparatus in encoding/decoding

A method and apparatus is provided for encoding image data comprising receiving image data and an initial quantization matrix for encoding the image data; converting the initial quantization matrix into a modified scaling matrix, wherein the modified scaling matrix has a plurality of coefficients divided into different frequency bands; adjusting a value corresponding to at least one of the plurality of coefficients to control quality of an image to be encoded; generating a parameter set having a plurality of band parameters, each band parameter corresponding to a coefficient of the modified scaling matrix; writing the encoded image data and the parameter set having the plurality of band parameters into a bitstream; and transmitting the bitstream over the network to a decoding device. The present disclosure may improve quality of the encoded image efficiently.. ... Tsinghua University

11/30/17 / #20170343698

Security detection system

The present disclosure relates to a technical field of a security detection device, and particularly, to a security detection system, comprising one or more detection devices, wherein the detection device comprises a first ray emitter, a ray receiver, and a movable frame, wherein the first ray emitter comprises a first ray source for generating first detection rays and is provided at a bottom portion of the movable frame, so that the first detection rays can penetrate through a detected object from a bottom of the detected object; the ray receiver comprises a ray detector provided on the movable frame, for correspondingly receiving the first detection rays having penetrated through the detected object; and the movable frame is movable in a direction in which the first ray emitter and the ray receiver are capable of moving through a detection region for the detected object.. . ... Tsinghua University

11/30/17 / #20170340279

Flexible extensile electronic device based on biocompatible film and preparation method

Disclosed is a flexible and stretchable electronic device based on a biocompatible film. The biocompatible film is utilized as an encapsulation layer and a substrate layer of the device; a bonding layer is provided between the encapsulation layer and a functional layer; and an adhesion layer is arranged under the substrate layer. ... Tsinghua University

11/23/17 / #20170338457

Composite barium sulfate diaphragm and preparation method therefor, and lithium-ion battery

A composite barium sulfate diaphragm is disclosed. The composite barium sulfate diaphragm includes a base membrane, and a coating layer coated on the base membrane. ... Tsinghua University

11/23/17 / #20170337107

Data storage system and data storage method

The data storage system and the data storage approach based on redundant arrays of independent disks (raid) is provided. The storage system includes: an raid controller, and a storage device subsystem. ... Tsinghua University

11/23/17 / #20170336500

Method and device for ultrasonic imaging by synthetic focusing

Provided are a method and device for ultrasonic imaging by synthetic focusing. The method comprises: exciting a plurality of matrix elements of an ultrasonic probe to transmit plane waves many times, wherein transmitting apodizations at the time of every transmission of the plane waves by the plurality of matrix elements correspond to the respective lines in a measurement matrix in which elements are randomly distributed; after every transmission of the plane waves, exciting all the matrix elements of the ultrasonic probe to receive echo signals, in order to obtain channel data; recovering a synthetic focusing channel data set by use of a compressed sensing reconstruction algorithm according to a channel data set and the measurement matrix; and subjecting the synthetic focusing channel data set to beamforming so as to generate an ultrasonic image.. ... Tsinghua University

11/16/17 / #20170332076

Method and device for determining transform block size

Embodiments of the present invention provide a method and a device for determining a transform block size, and can improve image compression efficiency. The method includes: obtaining, according to image block information and a splitting manner of an image block, a parameter of a transform block corresponding to the image block; and obtaining a transform block size according to the parameter of the transform block and the splitting manner of the image block. ... Tsinghua University

11/09/17 / #20170325229

Cellular network access method and apparatus

The present application discloses a cellular network access method and apparatus. An embodiment of the cellular network access method for a base station comprises: receiving, from a pair of d2d devices, a result of a spectrum detection which indicates a load level of a detected spectrum; selecting a cellular communication mode or a d2d communication mode based on the received result of the spectrum detection; and notifying the pair of d2d devices of the selected mode. ... Tsinghua University

11/09/17 / #20170324961

Method for predicting depth map coding distortion of two-dimensional free viewpoint video

Disclosed is a method for predicting depth map coding distortion of a two-dimensional free viewpoint video, including: inputting sequences of texture maps and depth maps of two or more viewpoint stereoscopic videos; synthesizing a texture map of a first intermediate viewpoint of a current to-be-coded viewpoint and a first adjacent viewpoint, and synthesizing a texture map of a second intermediate viewpoint of the current to-be-coded viewpoint and a second adjacent viewpoint by using a view synthesis algorithm; recording a synthetic characteristic of each pixel according to the texture map and generating a distortion prediction weight; and calculating to obtain total distortion according to the synthetic characteristic and the distortion prediction weight.. . ... Tsinghua University

11/09/17 / #20170324078

Apparatus and method for making lithium iron phosphate

An apparatus and a method for making lithium iron phosphate are disclosed. The apparatus comprises a raw material system to provide a raw material mixed solution of raw materials of a hydrothermal reaction or a solvothermal reaction; a tubular reaction device to make the raw material mixed solution in a plug flowing and reacting state to obtain a reacted material; and a kettle reaction device to make the reacted material in a complete mixing and reacting state to obtain a product. ... Tsinghua University

11/09/17 / #20170323849

Adapter panel and manufacturing method and encapsulation structure thereof and bonding method for the adapter panel

Disclosed is an adapter panel and a method of manufacturing the same comprising a panel body having a first surface and an opposing second surface, wherein a through-hole in a frustrum shape is formed through the panel body and filled by a conical electrical conductor between the first and second surface. The conical electrical conductor has a plane end flush with the first surface and a tip end protruding from the second surface. ... Tsinghua University

11/09/17 / #20170323034

Particle etching or depositing evolutionary simulation method and device and computer readable medium

The present invention provides particle etching or depositing evolutionary simulation method and device. The method comprises: step 1. ... Tsinghua University

11/09/17 / #20170320738

Solvothermal apparatus for making lithium iron phosphate

A solvothermal apparatus for making lithium iron phosphate is disclosed. The solvothermal apparatus comprises a manufacture unit and a recycle unit. ... Tsinghua University

11/09/17 / #20170320737

Solvothermal method for making lithium iron phosphate

A solvothermal method for making a lithium iron phosphate is disclosed. The waste liquid of a solvothermal reaction is treated synthetically by flash evaporation and a centrifugal separation to separate the water, the organic solvent, and the lithium sulfate, which is a byproduct from each other. ... Tsinghua University

10/12/17 / #20170294118

Vehicle identification methods and systems

Disclosed is a vehicle identification method and system. The method includes: acquiring appearance information of an inspected vehicle; obtaining external features of the vehicle based on the appearance information; acquiring a transmission image of the vehicle and obtaining internal features of the vehicle from the transmission image; forming descriptions on the vehicle at least based on the external features and the internal features; and determining a vehicle model of the vehicle from a vehicle model databased by utilizing the descriptions. ... Tsinghua University

10/05/17 / #20170288261

Anode composite material, method for making the same, and lithium ion battery

An anode composite material includes an anode active material and a polymer composited with the anode active material. The polymer is obtained by polymerizing a maleimide type monomer with an organic diamine type compound. ... Tsinghua University

10/05/17 / #20170288229

Sulfur based cathode composite material and method for making the same

A method for making a sulfur based cathode composite material is disclosed. Polyacrylonitrile and elemental sulfur are dissolved together in a first solvent to form a first solution. ... Tsinghua University

10/05/17 / #20170288204

Method for making battery slurry

A method for making a battery slurry is disclosed. The method comprises providing a plurality of solid raw materials and at least one liquid raw material, the at least one liquid raw material is divided into a first part solvent and a second part solvent to be used; mixing the plurality of solid raw materials to obtain a dry powder; kneading the dry powder and the first part solvent to obtain a doughy mixture; and dispersing the doughy mixture to the second part solvent to obtain the battery slurry.. ... Tsinghua University

10/05/17 / #20170287792

General four-port on-wafer high frequency de-embedding method

The present invention provides a general four-port on-wafer high frequency de-embedding method. The method comprises: for each on-wafer de-embedding dummy, building a model considering the distributive nature of high frequency characteristics of the on-wafer de-embedding dummy; obtaining the intrinsic y-parameter admittance matrix of said n on-wafer de-embedding dummies by calculation or simulation by using said models; and solving the equation set which the corresponding measurement and calculation or simulation data of said on-wafer de-embedding dummies satisfy for the elements of the related admittance matrices of the parasitic four-port network to be stripped in de-embedding and model parameters of models on which said calculation or simulation is based.. ... Tsinghua University

10/05/17 / #20170285174

Receiver and receiving method for navigation signals

A receiver and a receiving method for receiving wideband binary-offset-carrier modulated signals. The receiver includes a tracking apparatus which includes an upper sideband processor operable to generate upper sideband correlations through correlating a local upper sideband replica against a received navigation signal, a lower sideband processor operable to generate lower sideband correlations through correlating a local lower sideband replica against the received navigation signal, and an estimator operable to determine a delay estimate based on the upper sideband correlations and the lower sideband correlations.. ... Tsinghua University

10/05/17 / #20170283524

Method for making sulfur based cathode composite material

A method for making a sulfur based cathode composite material is disclosed. Polyacrylonitrile and elemental sulfur are dissolved together in a first solvent to form a first solution. ... Tsinghua University

10/05/17 / #20170282134

Apparatus for making battery slurry

An apparatus for making a battery slurry is disclosed. The apparatus comprises a vacuum system providing a vacuum environment, a dry powder mixing device mixing a plurality of powdery materials uniformly to obtain a dry powder, a kneading device kneading the dry powder with the first part solvent to form a doughy mixture, and a high speed dispersing device dispersing the doughy mixture to the second part solvent to form the battery slurry. ... Tsinghua University

09/28/17 / #20170276733

Method for screening lithium ion battery

A method of screening a lithium ion battery is provided. A number of lithium ion batteries are galvanostatically discharged to a discharge cutoff voltage v0 at a first constant current i1. ... Tsinghua University

09/28/17 / #20170276732

Method for screening lithium ion battery

A method for screening a lithium ion battery is provided. A number of lithium ion batteries are galvanostatically discharged a to an inflection point voltage at an inflection point of a discharge curve at a first constant current i1. ... Tsinghua University

09/21/17 / #20170271658

Cathode composite material, lithium ion battery, and method for making the same

A method for making a cathode composite material is disclosed. In the method, a maleimide-based material is provided. ... Tsinghua University

09/14/17 / #20170263936

Lithium metal electrode, method for preparing the same, and lithium rechargeable battery using the same

A lithium metal electrode includes a lithium metal plate and a protective layer coated on a surface of the lithium metal plate. The protective layer includes an organic-inorganic hybrid polymer comprising a repeating unit. ... Tsinghua University

09/07/17 / #20170252802

Powder sintering device

A powder sintering device is disclosed. The powder sintering device includes a support unit, an actuator unit located on the support unit, a sintering unit, and a reaction unit. ... Tsinghua University

08/31/17 / #20170246458

Variable frequency stimulation therapy method

The disclosure relates to an electrical stimulation therapy method. The method includes applying a variable frequency stimulation pulse to target nerve tissue of the patient suffering from dysfunction of a nerve circuit in the brain selected from the group consisting of motor circuit, associative circuit and limbic circuit, wherein the variable frequency stimulation pulse comprises at least two kinds of electrical stimulation pulse trains at different frequencies; and each of the at least two kinds of alternate electrical stimulation pulse trains in each of the plurality of pulse train periods has a duration in a range from about 0.1 seconds to about 60 minutes. ... Tsinghua University

08/17/17 / #20170233703

Genetic indicator and control system and method utilizing split cas9/crispr domains for transcriptional control in eukaryotic cell lines

While genetic engineering has undergone rapid advancement with the discovery of crispr/cas9, there is room for improvement for genetic circuit control, precision (reducing circuit ‘leakiness’) and delivery into living systems. The claimed invention offers programmable and precise regulation of dcas9 functions in response to multiple molecular signals by using synthetic gene circuits, greatly expanding applications. ... Tsinghua University

08/17/17 / #20170232478

Automatic weighing and sorting apparatus for battery electrode sheets

An automatic weighing and sorting apparatus for battery electrode sheets is provided. The automatic weighing and sorting apparatus includes a conveying device, a weighing device, and a sorting device. ... Tsinghua University

08/10/17 / #20170229710

Anode electrode material and lithium ion battery using the same

An anode binder, a cathode electrode material, and a lithium ion battery are disclosed. The anode binder includes a polymer obtained by polymerizing a dianhydride monomer with a diamine monomer. ... Tsinghua University

08/10/17 / #20170226291

Electrode binder, cathode electrode material and lithium ion battery

An electrode binder, a cathode electrode material, and a lithium ion battery are disclosed. The electrode binder includes a polymer obtained by polymerizing a dianhydride monomer with a diamine monomer. ... Tsinghua University

08/03/17 / #20170223378

Intra-frame pixel prediction method, encoding method and decoding method, and device thereof

Provided are an intra-frame pixel prediction method, encoding method and decoding method, and an intra-frame pixel prediction device. The intra-frame pixel prediction method comprises: defining a target template of a pixel to be predicted currently; comparing the target template with candidate templates in a search region of the frame, and determining, from the candidate templates, at least one matching template matching the target template; and based on the at least one matching template, determining a prediction value of the pixel to be predicted currently. ... Tsinghua University

08/03/17 / #20170220521

Method and device for estimating state of power system

A method and a device for estimating a state of a power system are provided. The method includes: dividing the power system into a plurality of sub-systems; establishing a first linear model of the power system for a first stage; solving the first linear model by an alternating direction multiplier method to obtain the intermediate state variables of each sub-system; performing a nonlinear transformation at a second stage on the intermediate state variables to obtain intermediate measured values; establishing a second linear model of the power system for a third stage according to the intermediate measured values; and solving the third linear model by the alternating direction multiplier method to obtain the final state variables of each sub-system.. ... Tsinghua University

08/03/17 / #20170219524

Method for tracing distribution of moving ions in ion mobility spectrometer

A method for tracing a distribution of moving ions in an ion mobility spectrometer is provided, including steps: first selecting a sample having light-emitting characteristics as a tracing sample; subsequently, ionizing the tracing sample by using an ionization source, and feeding ions of the tracing sample to a drift lube of the ion mobility spectrometer; using a plate to collect the ions at a to-be-detected cross section; and finally processing the ions collected on the plate by using an appropriate means, thereby enabling the ions to emit light, and displaying a distribution view of movement positions of the ions on the to-be-detected cross section. By combining a light-emitting tracing means and movements of charged ions in an ion mobility spectrometer, it is able to master a position distribution of the charged ions in the ion mobility spectrometer more intuitively and practically.. ... Tsinghua University

08/03/17 / #20170215969

Human organ movement monitoring method, surgical navigation system and computer readable medium

The present disclosure provides a human organ movement monitoring method for monitoring human organ movement in a surgical process in real time and a surgical navigation system. The human organ movement monitoring method includes: obtaining first position and orientation of movement monitoring tools in an image coordinate system identified from a preoperative three-dimensional medical image; determining second position and orientation of the movement monitoring tools in a positioning coordinate system in the surgery in real time; calculating an optimal coordinate transformation relation between the positioning coordinate system and the image coordinate system in real time based on the first position and orientation of the movement monitoring tools in the image coordinate system and the second position and orientation thereof in the positioning coordinate system, and calculating overall errors of coordinate transformation of the movement monitoring tools from the positioning coordinate system to the image coordinate system based on the optimal coordinate transformation relation; and evaluating movement degree of a human organ at various moments relative to a preoperative scanning moment based on the real-time determined overall errors of coordinate transformation of the movement monitoring tools at the various moments.. ... Tsinghua University

07/27/17 / #20170214048

Lithium ion battery

A lithium ion battery includes an anode electrode, an electrolyte, a separator, and a cathode electrode. The cathode electrode includes a cathode active material, a conducting agent, and a cathode binder. ... Tsinghua University

07/27/17 / #20170214046

Anode electrode material and lithium ion battery using the same

An anode binder includes a polymer obtained by polymerizing a maleimide type monomer with an organic diamine type compound. A lithium ion battery includes an anode electrode, an electrolyte, a separator, and an anode electrode. ... Tsinghua University

07/27/17 / #20170214043

Method for carbon coating on electrode active material of lithium ion battery

A method for carbon coating on an electrode active material of a lithium ion battery is disclosed. The method comprises mixing a plurality of electrode active material particles, a carbon source, and a first solvent to obtain a first mixture liquid; heating the first mixture liquid at a temperature from about 130° c. ... Tsinghua University

07/27/17 / #20170214040

Method for preparing sulfur-based cathode material

A method for preparing sulfur-based cathode material is disclosed. First, polyacrylonitrile and sulfur according to a proportion are dissolved in a first solvent at a first temperature to obtain a first solution. ... Tsinghua University

07/27/17 / #20170214039

Method for carbon coating on electrode active material of lithium ion battery

A method for carbon coating on an electrode active material of a lithium ion battery is disclosed. The method comprises carrying out a liquid phase reaction of an electrode active material precursor in a first solvent, thereby obtaining a first mixture liquid comprising the first solvent, and a plurality of electrode active material particles dispersed in the first solvent; adding a carbon source into the first mixture liquid, thereby obtaining a second mixture liquid; drying the second mixture liquid, thereby obtaining a plurality of carbon source coated electrode active material particles; and sintering the plurality of carbon source coated electrode active material particles, thereby obtaining a plurality of carbon coated electrode active material particles.. ... Tsinghua University

07/27/17 / #20170211550

Combined power generation system based on geothermal energy and solar energy and power generation method thereof

A combined power generation system based on geothermal energy and solar energy and a power generation method thereof are provided. The system includes: at least three injection wells; at least three production wells; at least three connected paths in a reservoir connected with gas outlets of the at least three injection wells and gas inlets of the at least three production wells; at least three geothermal turbines having gas inlets connected with gas outlets of the at least three production wells; a gas cooler; a first regenerator having a high-pressure gas inlet connected with a gas outlet of the upmost production well; a second regenerator having a high-pressure gas inlet connected with one geothermal turbine; a solar receiver having a gas inlet connected with the second regenerator; and a solar turbine having a gas inlet connected with the solar receiver and a gas outlet connected with the second regenerator.. ... Tsinghua University

07/13/17 / #20170201582

Cross-protocol distributed cloud storage system and data management method based on operation control unit

The present invention discloses a cross-protocol distributed cloud storage system based on a network node operation control unit. The distributed cloud storage system includes a plurality of network nodes, each of which includes an operation control unit that directly interacts with a data link layer, the operation control unit including a file unit, a network information management unit and a resource scheduling unit, wherein the file unit is used to mange and store file information of the network node where it is located; the network information management unit is used to interact with the data link layer so as to perform link scheduling for delivering the information between the network nodes, and to update data between the nodes; the resource scheduling unit is used to allocate and schedule hardware or network resources for the network information management unit and the file unit for implementing functions thereof.. ... Tsinghua University

07/13/17 / #20170201398

Electronic device, method and computer-readable medium for sensing spectrum usage in a cognitive radio communication system

The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry. ... Tsinghua University

07/06/17 / #20170195406

Distributed network node operation system based on operation control unit

A distributed network node operation system based on an operation control unit. The operation system operates on a network node and interacts with a data link layer, and includes: an application interface unit, a network information management unit, a file unit, a task scheduling unit and a device drive management unit. ... Tsinghua University

06/29/17 / #20170187766

Hybrid network system, communication method and network node

A hybrid network system, a communication method and a network node are provided. The hybrid network system includes a combined network system architecture of a point-to-point network and a broadcast network, the point-to-point network is provided with a plurality of point-to-point channels, and each network node can send a message to a corresponding network node or receive the message from the corresponding network node through the point-to-point channel; the broadcast network is provided with a plurality of broadcast channels, and each broadcast channel can only have one sender at most at the same time, but can have a plurality of receivers; at least a part of network nodes have the capability of sending messages to be broadcast, at least a part of network nodes have the capability of receiving the broadcast messages, and at least some network nodes are configured to select the broadcast network or the point-to-point network at least according to communication tasks to be executed per se to complete the communication tasks to be executed. ... Tsinghua University

06/29/17 / #20170182501

Centrifugal separation apparatus

A centrifugal separation apparatus is disclosed. The centrifugal separation apparatus comprises a rotary drum, wherein an inlet opening and an outlet opening are respectively defined on opposite ends of the rotary drum along a central axis of the rotary drum. ... Tsinghua University

06/29/17 / #20170182458

Apparatus and method for absorbing and mineralizing carbon dioxide

The present invention relates to an apparatus for absorbing and mineralizing carbon dioxide comprising a reactor and a three-phase separator, in which said reactor comprises a tower body and a draft tube disposed inside the tower body, a liquid inlet pipe and a gas intake pipe being disposed on the tower body, the outlet ends of the liquid inlet pipe and the gas intake pipe both being located inside the draft tube; and the three-phase separator is disposed at the upper end of the reactor, and a method therefor. The arrangement of draft tube inside the reactor of the present invention, enhances gas-liquid-solid mixing state because of the flow with airlift loop flow inside the reactor, accelerates the dissolution rate of solid alkali solute and thus may increase absorption reaction rate and absorptivity; the integration of three-phase separator in the reaction apparatus may isolate carbonate by settling while reacting, reduce solid content of the solution, while reducing the circulation of water between absorption and separation units, improve process performance, reduce process energy consumption; carbonate particles generated can be controlled better, thus a higher settling efficiency can be obtained.. ... Tsinghua University

06/22/17 / #20170179529

Safe additive, electrolyte and lithium ion battery using the same

A safe additive for a lithium ion battery is disclosed. The safe additive comprises a maleimide type monomer and an enediyne type compound. ... Tsinghua University

06/22/17 / #20170178720

Random access memory and operation methods

The present disclosure provides a random access memory. The random access memory includes: two identical memory cell arrays, a data write circuit and a data read circuit. ... Tsinghua University

06/15/17 / #20170170928

Signal detecting method and device

A signal detecting method and device are disclosed. The method includes: obtaining a matched filtering signal; determining a filtering matrix; decomposing the filtering matrix to obtain a principal diagonal matrix and a non-principal diagonal matrix; obtaining a parameter matrix and a parameter vector according to the principal diagonal matrix, the non-principal diagonal matrix, and the matched filtering signal; obtaining an iterative parameter and an iterative initial value according to the parameter matrix and the parameter vector; and performing an iterative calculation according to the iterative parameter and the iterative initial value; if the number of iterations reaches a preset number, obtaining an iterative final value, and obtaining an input of a decoder according to the iterative final value. ... Tsinghua University

06/15/17 / #20170170669

Method for managing capacity of lithium ion battery

A method for managing capacity of lithium ion battery is disclosed. A warning capacity d or c is preset for a discharge process or a charge process. ... Tsinghua University

06/15/17 / #20170170457

Powder sintering system

A powder sintering system is disclosed. The powder sintering system includes a furnace body, a first dispersing device, a second dispersing device, and a heating device. ... Tsinghua University

06/15/17 / #20170170440

Method for making composite separator

A method for making a composite separator is disclosed. In the method, a liquid dispersion of single ion nanoconductors is prepared. ... Tsinghua University

06/15/17 / #20170167791

Powder sintering system

A powder sintering system is disclosed. The powder sintering system includes a furnace body, at least one first dispersing device, at least one second dispersing device, a heating device, and a gas introducing device. ... Tsinghua University

06/15/17 / #20170166677

Method for making single ion nanoconductor

A method for making a single ion nanoconductor is disclosed. In the method, a solution of nano sol is formed through a hydrolysis reaction. ... Tsinghua University

06/15/17 / #20170164830

Eye imaging device and method of use

In one aspect, disclosed herein are devices, systems, and methods for assessing human health states based on non-shadow imaging of sclera, or whites, of one or both eyes. In one aspect, the device is an on-body device. ... Tsinghua University

06/08/17 / #20170163745

Method and apparatus for deploying edge servers

A method and apparatus for deploying edge servers are provided. The method includes: obtaining ip addresses of target users for the edge server to be deployed; mapping the ip addresses of the target users into a virtual geometric space; clustering the target users based on coordinates of the target users in the virtual geometric space, to obtain a plurality of user groups; and determining locations of the edge servers corresponding to the plurality of user groups based on the coordinates of the target users in the plurality of user groups.. ... Tsinghua University

06/08/17 / #20170162870

Cathode composite material, lithium ion battery using the same and method for making the same

A method for making a cathode composite material is disclosed. The method comprises: providing a maleimide type material, wherein the maleimide type material is selected from the group consisting of a maleimide type monomer, a polymer formed from the maleimide type monomer, and combinations thereof; mixing the maleimide type material with a cathode active material uniformly to form a mixture; heating the mixture at a temperature of about 200° c. ... Tsinghua University

06/08/17 / #20170160225

Method for producing oxygen sensor

A production method for producing an oxygen sensor, includes spinning a precursor consisting of a salt of at least one metal chosen from sc, y, la, ce, pr, nd, sm, gd, dy, ho, yb, sr, ba, mn, co, mg, and ga, a solvent, and a macromolecular polymer to produce nanofibers of the precursor containing the salt of the metal. The method further includes calcining the nanofibers of the precursor at a temperature ranging from 550° c. ... Tsinghua University

06/08/17 / #20170160184

Apparatus and method to measure a molecular diffusion coefficient in a porous powder

An apparatus and method for measuring molecular diffusivity in porous powders or minerals, e.g., the microporous synthetic minerals used for gas separation and chemical catalysis, were invented that allows a varying pressure in the gas around the powder during the measurement. This obviates the need for the pressure to be constant and the attendant complicated component parts. ... Tsinghua University

06/01/17 / #20170155128

Cathode composite material and lithium ion battery using the same

A cathode composite material is disclosed. The cathode composite material comprises a cathode active material and a maleimide type monomer composed with the cathode active material. ... Tsinghua University

05/18/17 / #20170142414

Method and device for video coding and decoding

A method and device for coding and decoding are disclosed. The method includes: dividing a picture to be encoded into several slices, each containing macroblocks continuous in a designated scanning sequence in the picture; dividing slices in the picture into one or more slice sets according to attribute information of the slices, each slice set containing one or more slices; and encoding the slices in the slice sets according to slice and slice set division information to get a coded bit stream of the picture. ... Tsinghua University

05/11/17 / #20170133851

Method and device for controlling active distribution network

The present disclosure provides a method and a device for controlling an active distribution network, relating to the field of power system operation and control technology. The method includes: creating a power loss objective function; determining first power flow equations; obtaining second power flow equations by performing linearization on the first power flow equations; determining a sub-scale adjustment model of a transformer; obtaining a linearized model of the transformer by performing linearization on the sub-scale adjustment model; obtaining control parameters by solving the power loss objective function according to the second power flow equations, the linearized model of the transformer, an operation constraint of the continuous reactive power compensator, an operation constraint of the grouping switching capacitor, an operation constraint of the distributed generator and a safety operation constraint in the active distribution network, such that the active distribution network is controlled by the obtained parameters to minimize power loss.. ... Tsinghua University

05/11/17 / #20170131037

Combined heating power and cooling apparatus with energy storage type adapted to an active distribution network and its method

The application relates to an combined heating power and cooling apparatus with energy storage for an active distribution network and its operating method. The apparatus is comprised of a generation apparatus, a generator, a waste heat recovering and absorbing heat pump, a high temperature flue gas-water heat exchanger, a medium temperature flue gas-water heat exchanger, a low temperature flue gas-water heat exchanger, a energy storing electric heat pump, a high temperature energy storing canister, a low temperature energy storing canister, a cooling tower a number of circulating water pumps and a number of valves. ... Tsinghua University

04/27/17 / #20170117590

Cathode composite material, lithium ion battery using the same and method for making the same

A cathode composite material is disclosed. The cathode composite material comprises a cathode active material and a polymer composed with the cathode active material. ... Tsinghua University

04/27/17 / #20170117584

Additive, electrolyte and lithium ion battery using the same

An additive for a lithium ion battery is disclosed. The additive is a polymer obtained by polymerizing a maleimide type monomer with an organic diamine type compound. ... Tsinghua University

04/20/17 / #20170108422

High-speed rheometer

A high-speed rheometer includes a base, a driving device disposed on the base, a lower sample assembly connected with the driving device, an upper sample assembly disposed above the lower sample assembly, a torsion bar disposed on the upper sample assembly and being torsional upon the rotation of the upper sample assembly, and an optical torque measuring assembly. The lower sample assembly is rotatable under the driving of the driving device, and the upper sample assembly is rotatable under the driving of the fluid. ... Tsinghua University

04/13/17 / #20170104998

Method and apparatus for coding matrix and method and apparatus for decoding matrix

The present disclosure provides a method and an apparatus for coding or decoding a matrix, includes: dividing a matrix into layers according to a preset quantity of divided layers, and grouping matrix elements into different layers; performing, according to a determined layer number of a highest layer to be coded and in an order of layers one by one, coding processing on matrix elements at each layer to be coded; for a layer having a layer number less than or equal to the layer number of the highest layer to be coded, writing residual data between an original matrix element value corresponding to the layer and a corresponding matrix element predicted value into a bit stream; for a layer having a layer number greater than the layer number of the highest layer to be coded, writing no coded data of the layer into the bit stream.. . ... Tsinghua University

04/06/17 / #20170095818

Integrated microfluidic device for target amplification and microarray detection

In one aspect, the present disclosure provides an integrated microfluidic device for nucleic acid amplification and microarray detection. In one aspect, the device comprises: (1) a microchip configured to process reagents, comprising a plurality of reservoirs, channels, valves, and/or fluid interfaces; (2) an amplification chamber for pcr, carried out in a detachable tube assembled on the microchip through a joint; and (3) a microarray chamber comprising a microarray and a reaction chamber. ... Tsinghua University

03/30/17 / #20170091018

Method and apparatus for optimizing recovery of single-disk failure

The present invention discloses a method for optimizing recovery of a single-disk failure, including the following steps: obtaining, according to current load information, an amount of data expected to be read and an allowed number of iterations; obtaining a recovery optimization policy for failed data in each single stripe, and combining an initial recovery policy for multiple stripes; and further optimizing the initial recovery policy by using a greedy algorithm based on tabu search, subject to the amount of data expected to be read and the allowed number of iterations, to finally obtain an optimal recovery policy with a smallest quantity of seeks. The optimization method of the present invention reduces the amount of data to be read and the quantity of seek operations, and improves the efficiency of recovering a single-disk failure. ... Tsinghua University

03/30/17 / #20170088430

Application of silicon dioxide aerogel as nano-drug carrying system in pharmacy

The invention relates to an application of silicon dioxide aerogel as a nano-drug carrying system in pharmacy. The silicon dioxide aerogel has a nanosized drug carrying hole structure, and is a nanosized pharmaceutical excipient capable of realizing a physical drug carrying scale below 100 nm.. ... Tsinghua University

03/23/17 / #20170083648

Fast model generating and solving method for security-constrained power system operation simulation

The present disclosure provides a fast model generating and solving method for security-constrained power system operation simulation, which includes: obtaining information of all branches and nodes which are involved during operation simulation time period, calculating original-node impedance matrix, load shifting distribution factor original matrix and generator shifting distribution factor original matrix of all involved branches; correcting the load shifting distribution factor original matrix and the generator shifting distribution factor original matrix according to the on-off state of branches; obtaining output of each generator unit at each time period according to no-security-constraint unit commitment model, and determining overload of each branch again; solving iteratively until no branch is overloaded, and obtaining output of each generator unit at each time period under security constraint of operation simulation for the current simulation day, performing operating simulation for the rest simulation days to obtain security-constraint operation simulation result for the whole year.. . ... Tsinghua University

03/23/17 / #20170083236

Method and apparatus for multiple accesses in memory and storage system

Provided are a method for multiple accesses in a memory, an apparatus supporting multiple accesses in the memory and a storage system. The method comprises: receiving a number n of addresses in the memory, wherein n is an integer larger than 1 and the number n of addresses are discontinuous (110); performing a preset operation according to the number n of addresses (120); and outputting the result of the operation (130). ... Tsinghua University

03/16/17 / #20170077477

Polyolefin composite separator, method for making the same, and lithium ion battery using the same

A method for making a polyolefin composite separator is disclosed. Methyl methacrylate and γ-(triethoxysilyl) propyl methacrylate are polymerized to form a copolymer. ... Tsinghua University

03/16/17 / #20170077473

Polyolefin composite separator, method for making the same, and lithium ion battery using the same

A method for making a polyolefin composite separator is disclosed. Methyl methacrylate and γ-(triethoxysilyl)propyl methacrylate are polymerized to form a copolymer. ... Tsinghua University

03/09/17 / #20170070044

Robust restoration method for active distribution network

The present disclosure provides a robust restoration method for an active distribution network, which can be used under uncertain environment. For uncertain factors in the power restoration, the robust restoration method creates polyhedral uncertainty sets of the load demands and the distribution generation outputs and presents a two-stage robust restoration optimization model to obtain switching decisions under the worst-case fluctuation scenarios, thereby maximizing the restored power, while satisfying constraints and uncertainty budget. ... Tsinghua University








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