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Tsinghua University patents (2018 archive)


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


Separator of lithium ion battery and method for making the same

. . A lithium ion battery separator comprises a separator substrate and two halloysite nanotube coatings, wherein the separator substrate has two opposite surfaces, and the two halloysite nanotube coatings are respectively disposed on the two opposite surfaces of the separator substrate. A method for making the lithium ion battery separator is further provided.. ... Tsinghua University

Igbt modeling method and circuit simulation method

An igbt modeling method includes creating piece-wise line functions describing a collector-emitter voltage vce, a collector current ic and a gate-emitter voltage vge of the igbt during a switching-on transient based on an internal structure of the igbt and transient processes of the igbt. The igbt modeling method further includes creating piece-wise line functions describing the collector-emitter voltage vce, the collector current ic and the gate-emitter voltage vge of the igbt during a switching-off transient based on the internal structure of the igbt and the transient processes.. ... Tsinghua University

Method for reconstructing defect

A method for reconstructing a defect includes: s1, establishing a database of magnetic flux leakage signals of a unit defect and acquiring a magnetic flux leakage signal of the unit defect; s2, acquiring a target magnetic flux leakage signal; s3, initially setting a scaling factor k; s4, constructing a forward model; s5, inputting the k into the forward model and performing forward prediction according to the k to acquire a predicted magnetic flux leakage signal for the defect to be detected; s6, calculating an error between the target magnetic flux leakage signal and the predicted magnetic flux leakage signal, and determining whether the error is smaller than an error threshold ε, if yes, executing s7; otherwise, executing s5 after the k is corrected; and s7, scaling the unit defect according to the k to acquire a final size of the defect to be detected.. . ... Tsinghua University

Electrolyte liquid, method for preparing the same, and lithium sulfur battery using the same

The present disclosure provides an electrolyte liquid of a lithium sulfur battery comprising a carbonate ester organic solvent, a lithium salt, and a flame-retardant cosolvent, the flame-retardant cosolvent being a phosphazene compound, wherein a mass percentage of the flame-retardant cosolvent is 20% to 50%, a concentration of the lithium salt is 0.8 mol/l to 1.2 mol/l. The present disclosure also provides a lithium sulfur battery and a method for preparing the electrolyte liquid.. ... Tsinghua University

Apparatus and method for detecting multilayer multipass welding trajectory

Apparatuses and methods for detecting multilayer multipass welding trajectory are disclosed. The apparatus includes an imaging component, a first and a second directional light source group, a structured light source and a control and processing component. ... Tsinghua University

Reconfigurable processor and timing contorl method thereof

The present disclosure provides a reconfigurable processor and a timing control method thereof. The reconfigurable processor comprises a reconfigurable cell array (rca) including a plurality of reconfigurable cells (rcs) and a control unit; the control unit is configured to generate and send a timing control information to the rca; and the rca is configured to execute an operation task according to the timing control information, wherein the rc in the rca starts to execute an operation when receiving the timing control information, and delivers the timing control information to a next level of rc within the rca according to a preset order after the operation is completed; and when the rca completes the operation task corresponding to the timing control information, the rca destroys the timing control information, wherein the operation task includes operations executed by each level of the rcs receiving the timing control information. ... Tsinghua University

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

08/16/18 / #20180231761

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

08/16/18 / #20180231504

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

08/16/18 / #20180231503

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

08/09/18 / #20180226639

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

08/09/18 / #20180225518

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

08/09/18 / #20180223699

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








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