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Tsinghua University patents (2015 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


12/31/15 / #20150381414

Method and gateway for automatically controlling relays and wireless sensor network

A method for automatically controlling relays is provided. The method includes: establishing a wireless sensor network comprising a gateway, a plurality of sensors connected with the gateway, a plurality of relays, and a plurality of terminals corresponding to the plurality of relays respectively and connected with the gateway via the plurality of relays; setting configuration information for each terminal and writing the configuration information into the gateway, where the configuration information of each terminal comprises operation parameters of the terminal, working modes related with the operation parameters, and sensors used for detecting environment parameters of the terminal; receiving by the gateway the environment parameters sent from the plurality of sensors; determining by the gateway whether the environment parameters detected by the sensors corresponding to the terminal are matched with the operation parameters of the terminal; and if yes, controlling the relay corresponding to the terminal to turn on.. ... Tsinghua University

12/31/15 / #20150376777

Method for making microstructure on substrate

The disclosure relates to a method of making a microstructure on a substrate. A carbon nanotube structure is provided, wherein the carbon nanotube structure includes a number of carbon nanotubes arranged orderly and defines a number of first openings. ... Tsinghua University

12/24/15 / #20150371809

X-ray generator with adjustable collimation

The present disclosure provides an x-ray generator with adjustable collimation. The x-ray generator comprises: an assembly of x-ray source, which includes an x-ray tube having a cathode and an anode and a front collimator; a high voltage generator, which is disposed in an extended chamber of a housing for the x-ray tube and which is used for supplying a direct current high voltage between the cathode and the anode of the x-ray tube to excite x-ray beams; a collimation adjustment unit, which is rotatably disposed outside of the front collimator and which is used for adjusting fan-type x-ray beams into continuous pencil-type x-ray beams; and a cooling unit, which is independently mounted to the x-ray tube and which is used for cooling the anode of the x-ray tube; wherein, the assembly of x-ray source, the high voltage generator, the collimation adjustment unit and the cooling unit are integrated as a whole. ... Tsinghua University

12/24/15 / #20150371385

Method and system for calibrating surveillance cameras

A method and a system for calibrating a plurality of surveillance cameras are provided. The method includes: sampling a plurality of first images in a monitoring scene of the plurality of surveillance cameras by a sampling device and sampling a second image by each of the plurality of surveillance cameras; performing a feature matching on the plurality of first images to obtain a matching result between the plurality of first images; reconstructing a three-dimensional point set of the monitoring scene according to the matching result between the plurality first of images; and calculating parameters of each of the plurality of surveillance cameras according to the three-dimensional point set and the second image sampled by each of the plurality of surveillance cameras.. ... Tsinghua University

12/24/15 / #20150369331

Negative stiffness system for gravity compensation of micropositioner

A negative stiffness system for gravity compensation of a micropositioner of wafer table in lithography machine, characterized in that, the negative stiffness system includes at least three sets of quasi-zero stiffness units, each of the sets of quasi-zero stiffness units comprises a pair of negative stiffness springs and a positive stiffness spring, the positive stiffness spring is vertically positioned, the pair of negative stiffness springs are obliquely and symmetrically positioned at two sides of the positive stiffness spring, upper ends 20 of the negative stiffness springs and the positive stiffness spring are connected together and fixed to the bottom surface of a rotor of the micropositioner, and lower ends of the negative stiffness springs and the positive stiffness spring are connected to a base, respectively. The system reduces the stiffness in vertical direction and prevents the influence of permanent magnet on its surroundings, while improving the bearing capacity.. ... Tsinghua University

12/17/15 / #20150362723

Optical grating phase modulator for laser interference photoetching system

An optical grating phase modulator for a laser interference photoetching system is composed of a substrate, an optical grating, an electric motor and an optical grating positioner. The optical grating, the electric motor and the optical grating positioner are all mounted on the substrate. ... Tsinghua University

12/10/15 / #20150356755

Ct imaging systems and methods thereof

Ct imaging systems and methods thereof are disclosed. A common ct scanning is performed on an object to obtain a common ct imaging. ... Tsinghua University

12/10/15 / #20150355215

Approach to assess available wind resource distribution based on interpolation method

An approach to assess available wind resource distribution based on interpolation method includes following steps. A correlation coefficient is obtained between each two of a number of anemometer towers, and a number of first groups are formed by grouping the anemometer towers for the first time with the shortest distance clustering method. ... Tsinghua University

12/03/15 / #20150347804

Method and system for estimating fingerprint pose

A method and system for estimating a fingerprint pose are provided. The method includes following steps. ... Tsinghua University

12/03/15 / #20150346154

Inner detecting device for subsea oil and gas pipeline

An inner detecting device for subsea oil and gas pipeline includes a support shaft defining a sealed chamber therein; a packer cup coupled to the support shaft; a hinge assembly coupled to the support shaft, swinging with respect to the support shaft in a radial direction and sliding with respect to the support shaft in an axial direction; a magnetic detector connected to the hinge assembly to move with respect to the support shaft in the radial and axial directions, and the magnetic detector tending to move away from the support shaft in the radial direction; a battery pack; an electric recorder electrically connected to the battery pack; and a mileage recorder recording a travel distance of the inner detecting device within the pipeline.. . ... Tsinghua University

12/03/15 / #20150345474

Method of calculating available output power of wind farm

A method of calculating available output power of wind farm includes following steps. A space vector vk is obtained by decomposing a power sequence of benchmarking wind turbines in a wind farm based on empirical orthogonal function. ... Tsinghua University

11/26/15 / #20150339291

Method and apparatus for performing bilingual word alignment

The invention discloses a method and apparatus for performing bilingual word alignment, relating to the field of text information formation processing. The method comprises the following steps: preprocessing the source and the translated (target) text of the bilingual documents to be aligned; computing the probability of the link (i.e. ... Tsinghua University

11/26/15 / #20150338205

Heterodyne grating interferometer displacement measurement system

A displacement measurement system of heterodyne grating interferometer, comprises a reading head, a measurement grating and an electronic signal processing component. Laser light emitted from the laser tube is collimated, passes through the first polarization spectroscope, and then emits two light beams with a vertical polarization direction and a vertical propagation direction; the two light beams pass through two acousto-optic modulators and respectively generate two first-order diffraction light beams with different frequencies, which are later divided into reference light and measurement light; two parallel reference light beams form a beat frequency electric signal with positive and negative first-order diffraction measurement light respectively after passing through a measurement signal photo-electric conversion unit; the beat frequency signals are transmitted to the electronic signal processing component for signal processing, thus the output of linear displacement in two directions is realized.. ... Tsinghua University

11/26/15 / #20150336815

Method of treatment of radioactive wastewater

A method of treatment of radioactive wastewater. The method includes: allowing radioactive wastewater to undergo reverse osmosis treatment and continuous electrodeionization treatment in sequence. ... Tsinghua University

11/19/15 / #20150332486

Spiral ct systems and reconstruction methods

The present disclosure discloses a spiral ct system and a reconstruction method thereof. In some embodiments, it is proposed that data missing due to a large pitch is compensated by weighting the complementary projection data of the projection data obtained using the spiral ct system. ... Tsinghua University

11/19/15 / #20150332448

Object detection methods, display methods and apparatuses

Disclosed are object detection method, display methods and apparatuses. The method includes obtaining slice data of inspected luggage in the ct system; generating 3d volume data of objects in the luggage from the slice data; for each object, determining a semantic description including at least a quantifier description of the object based on the 3d volume data; and upon reception of a user selection of an object, presenting the semantic description of the selected object while displaying a 3d image of the object. ... Tsinghua University

11/19/15 / #20150330565

Lubricant, friction pair having the lubricant and method for controlling friction coefficient between the friction pair

A lubricant, a friction pair having the lubricant and a method for controlling cof between the friction pair are provided. The friction pair includes a first friction part (1) and a second friction part (2). ... Tsinghua University

11/19/15 / #20150328157

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

11/12/15 / #20150326150

Maglev workpiece table with six degrees of freedom

A maglev working table with six degrees of freedom comprises a pedestal (800), a rotation drive apparatus, a planar-motion apparatus, an angle measuring apparatus (500), and a displacement measuring apparatus. The displacement measuring apparatus comprises four direct-current motors (600) and four displacement measuring apparatus psd assemblies. ... Tsinghua University

11/12/15 / #20150325790

Method for forming resistive random access memory cell

A method for forming a resistive random access memory is provided. The method comprises: steps of: s1) providing a silicon substrate; s2) forming an isolation layer on the silicon substrate; s3) forming a bottom electrode on the isolation layer; s4) forming a resistive switching material layer on the bottom electrode by magnetron sputtering at room temperature, comprising: s41) forming a first resistive switching layer of taox on the bottom electrode by magnetron sputtering under a first deposit pressure and in a first atmosphere, in which 0<x<2; and s42) forming a second resistive switching layer of taoy on the first resistive switching layer by magnetron sputtering under a second deposit pressure and in a second atmosphere, in which 0<y<2.5; s5) forming a top electrode on the resistive switching material layer; and s6) removing the resistive switching materials taox and taoy sputtered onto contacts of the bottom electrode in step s4.. ... Tsinghua University

11/12/15 / #20150324230

Multi-resource task scheduling method

A multi-resource task scheduling method includes: classifying concurrency packets to distinguish packets with deadline and packets without deadline; ranking packets with deadline using edf algorithm and ranking packets without deadline using sjf algorithm; estimating a virtual start time and a virtual completion time according to ranking results; determining whether packets with deadline can be scheduled successfully; if yes, determining whether there is a packet without deadline, which can be arranged to be scheduled before the packets with deadline and can shorten average completion time, existing in the packets without deadline; and if yes, scheduling the packet without deadline, which can be arranged to be scheduled before the packets with deadline, in advance. The method can shorten the average completion time of all tasks greatly under multi-resource circumstance.. ... Tsinghua University

10/29/15 / #20150311099

Wafer stage having function of anti-collision

A silicon wafer platform with anti-collision function comprises a silicon wafer platform body (1) and a cable platform (2). The cable platform (2) is mounted on one side of the silicon wafer platform. ... Tsinghua University

10/01/15 / #20150281002

Universal support system for internet of things

A universal support system for internet of things is provided. The system comprises: a user program management center, configured to send a request for an existing program or a request for a customized program according to an instruction input by a user; a management and control center, configured to obtain an existing program according to the request for the existing program, to generate a customized program according to the request for the customized program, to deploy the existing program, and to deploy the customized program according to the description of resource requirements and description of functional requirements of the customized program; and a sensor network, configured to run the existing program or the customized program according to the deployment, to obtain operation data during running an existing program or a customized program, and to send the operation data to the user program management center via the management and control center.. ... Tsinghua University

10/01/15 / #20150273426

Fluidized bed reactor and method for preparing polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde

The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcorner and an interstage downcorner. ... Tsinghua University

09/24/15 / #20150271168

Method, device, and system establishing a wireless communication channel between electronic devices

Provided herein are methods, devices, and systems of wireless communication. In one embodiment, a method for wireless communication between a first electronic device and a second electronic device includes: providing information symbols to the first electronic device, transmitting a pairing request from the first electronic device to the second electronic device, obtaining a pairing password by accessing a database, and establishing a wireless communication channel between the first electronic device and the second electronic device. ... Tsinghua University

09/24/15 / #20150268644

Optimal control method and apparatus for power system

An optimal control method and apparatus for a power system are provided. The method includes: obtaining ancillary service bidding data; establishing a power system optimal control model according to the ancillary service bidding data; solving the power system optimal control model to obtain optimal frequency regulation capacities and optimal spinning reserve capacities; sending the optimal frequency regulation capacities and the optimal spinning reserve capacities to generators such that the generators adjust their active powers to provide ancillary services for the power system.. ... Tsinghua University

09/24/15 / #20150268031

Dual-frequency grating interferometer displacement measurement system

A dual-frequency grating interferometer displacement measurement system, comprises a dual-frequency laser, an interferometer, a measurement grating and an electronic signal processing component. The measurement system realizes displacement measurement based on grating diffraction, optical doppler effect and optical beat frequency theory. ... Tsinghua University

09/10/15 / #20150255792

Rechargeable zinc ion battery based on carbon cathode

The present invention discloses a rechargeable zinc ion battery, in which anodic zinc will be electrochemically dissolved as zn2+ ions, diffuses to the cathodic electrode/electrolyte interface through the electrolyte, and zinc ions subsequently inserted in carbon material during discharging. In charging, above-mentioned process will be reverse. ... Tsinghua University

09/10/15 / #20150255194

Selection method for strong wind region composite insulator based on intrinsic frequency, and composite insulator

A selection method for a strong wind region composite insulator based on a intrinsic frequency, and a composite insulator are provided. When a selection is made among a plurality of composite insulators according to the selection method, a intrinsic frequency of a composite insulator to be selected is measured first; if the composite insulator is an unequal-diameter umbrella, the intrinsic frequency of a large umbrella skirt in the composite insulator is measured; if the composite insulator is an equal-diameter umbrella, the intrinsic frequency of any umbrella skirt in the composite insulator is measured; and then a composite insulator is selected according to the intrinsic frequency, wherein the composite insulator whose intrinsic frequency is greater than or equal to 45 hz is selected. ... Tsinghua University

09/10/15 / #20150252914

Microvalve device and fluid flow control method

A microvalve device and fluid flow control method, the microvalve device comprising: a microvalve body, the microvalve body being composed of multiple layers and comprising a first layer (1) and a second layer (2) bonded with the first layer (1), the second layer (2) having a plurality of fluid ports (7, 8, 9); a cavity (6) disposed between the first layer and the second layer; a plurality of actuators (3, 4, 5) respectively disposed corresponding to each fluid port, the plurality of actuators (3, 4, 5) controlling the opening and closing of the plurality of fluid ports (7, 8, 9). The fluid flow control method comprising: respectively employing a plurality of actuators to independently control the opening and closing of a plurality of fluid ports.. ... Tsinghua University

09/03/15 / #20150246517

Method for transferring nanostructures

A method for transferring nanostructures includes providing a growth substrate and a number of nanostructures located on the growth substrate. The nanostructures are transferred by an adhesive layer from the growth substrate to a target substrate. ... Tsinghua University

09/03/15 / #20150246516

Method for transferring nanostructures

A method for transferring nanostructures includes providing a growth substrate and a number of nanostructures located on the growth substrate. The nanostructures are transferred by an adhesive layer from the growth substrate to a target substrate. ... Tsinghua University

08/27/15 / #20150245135

Method, device, and system for processing data during idle listening

The present invention provides a method, a device and a system for processing data during idle listening. The method includes: sampling, in an idle listening mode, a first analog signal by using an n-bit adc, and sampling, in a transceiving mode, a second analog signal by using an m-bit adc, where n and m are both integers, and n is less than m. ... Tsinghua University

08/27/15 / #20150244911

System and method for human computer interaction

The present invention relates to the technical field of the human computer interaction, more particularly to, a system and method for human computer interaction. The system for human computer interaction comprises a projection unit, a first image sensing unit, a second image sensing unit, an interface unit, an image processing unit, a projected interface processing unit, and a controlling unit. ... Tsinghua University

08/27/15 / #20150243506

Method for forming germanium-based layer

A method for forming a germanium-based layer is provided. The method includes: providing a substrate having a ge or gesi surface layer; and implanting atoms, molecules, ions or plasmas containing an element sn into the ge surface layer to form a ge-based gesn layer, or implanting atoms, molecules, ions or plasmas containing an element sn into the gesi surface layer to form a ge-based gesnsi layer, or co-implanting atoms, molecules, ions or plasmas containing elements sn and si into the ge surface layer to form a ge-based gesnsi layer.. ... Tsinghua University

08/27/15 / #20150243505

Method for forming fin field effect transistor

A method for forming a finfet is provided, comprising: providing a substrate; forming a fin structure with a material ge or gesi on the substrate; forming a gate stack or a dummy gate on the substrate; defining a first region and a second region in the fin structure; and implanting atoms, molecules, ions or plasmas containing an element sn into the first region and the second region in the fin structure with the material ge to form a strained gesn layer, or implanting atoms, molecules, ions or plasmas containing an element sn into the first region and the second region in the fin structure with the material gesi to form a strained gesnsi layer, or co-implanting atoms, molecules, ions or plasmas containing elements sn and si into the first region and the second region in the fin structure with the material gesi to form a strained gesnsi layer.. . ... Tsinghua University

08/27/15 / #20150243502

Method for forming fin field effect transistor

A method for forming a fin field effect transistor is provided. The method includes: providing a substrate; forming a fin structure with a material ge or gesi on the substrate; implanting atoms, molecules, ions or plasmas containing an element sn into the fin structure with the material ge or gesi to form a ge-based gesn layer or a ge-based gesnsi layer; and forming a gate stack on the ge-based gesn layer or the ge-based gesnsi layer, the gate stack being oriented transversely to the fin structure.. ... Tsinghua University

08/20/15 / #20150231598

Magnetic core coated inorganic ion adsorbent for removing cs ions in radioactive wastewater and preparation method thereof

The invention discloses a micron-grade magnetic core coated ferrocyanide adsorbent for removing cs ions in radioactive wastewater and a preparation method thereof. The adsorbent takes magnetic fe3o4 as a core, the surface is coated with a dense sio2 single layer serving as a protective layer, and an active component is metal ion stabilized potassium ferrocyanide coated on the outer layer, wherein stabilized metal ions comprise ti, zn, cu, ni, co, and zr. ... Tsinghua University

08/13/15 / #20150227650

Method for modeling etching yield and etching surface evolution simulation method

The present disclosure relates to a method for modeling an etching yield in the evolution simulation of a plasma etched surface, and belongs to the technical field of process simulation of etching surfaces in a micro-electronic processing technology. The method includes the following steps: performing parameterization representation on an etching yield model of various ions; obtaining optimal parameters in the etching yield model by adopting an optimization algorithm; in an optimization process, selecting some specific positions on the surface of a groove, and by comparing simulated etching rates at different time points in an evolution process with an actual etching rate, calculating the goodness (fitness value) of each group of model parameters as a basis of selecting the optimization algorithm and generating a next model parameter set; substituting the obtained model parameters into a model parameterization formula so as to obtain the etching yield model. ... Tsinghua University

08/13/15 / #20150226549

Thickness and convexity detection device for plate strip

The invention relates to a device for detecting the thickness and crown of plates and strips, belonging to the field of nuclear technology applications. The device comprises a c-frame; two ray source mounted in an upper arm of the c-frame and distributed at an interval along the width direction of a steel plate/strip; two rows of gas-pressurized ionization chamber detector arrays mounted in a lower arm of the c-frame and distributed at an interval along the moving direction of the plate/strip; collimators mounted below the two ray source, the collimators enabling the rays of each ray source to only irradiate to a corresponding row of detectors; pre-amplifier modules connected with the detector arrays; a data collector connected with the pre-amplifier modules; a data processing and displaying computer connected with the data collector; and a cooling water and pressurized air service system and a control system for ensuring system operation and monitoring. ... Tsinghua University

08/13/15 / #20150226419

Steam generator

A steam generator includes a heat exchanger, a liquid header and a steam header. The heat exchanger is assembled by several heat exchanging subassemblies with the same structure. ... Tsinghua University

08/06/15 / #20150223256

Channel allocation method based on shapley value in wireless networks

A channel allocation method based on shapley value in wireless networks is provided. The method comprises: disclosing by a pu (primary user) some idle channels denoted by serial numbers, a utilization rate threshold, a lowest selling price, and an increment between two bidding prices; sus (secondary users) reporting the corresponding numbers of required channels to the pu; calculating a plurality of legal teams satisfying the utilization rate threshold; classifying the plurality of sus; calculating the shapley value of each su in each legal team; calculating an estimated price of each multi-user in each legal team; determining the retained legal teams; performing an ascending auction process by the retained legal teams; and allocating the channels to the sus in the winning team.. ... Tsinghua University

08/06/15 / #20150219728

Method and device for measuring various parameters of membrane electrode assembly in fuel cell

A method and a device for measuring various parameters of a membrane electrode assembly (mea) in a fuel cell. Hydrogen gas and nitrogen gas or air are supplied to the fuel cell to be tested. ... Tsinghua University

08/06/15 / #20150217290

Microfluidic chip and application thereof

Provided is a microfluidic chip, which comprises a substrate and a cover sheet, wherein a microreactor array is arranged on the substrate and comprises at least one main channel (401) and at least two micro cells (402) connected to the main channel (401). The microfluidic chip also comprises at least one local temperature control device, which is used for heating the main channel (401) or cooling the micro cells (402). ... Tsinghua University

07/30/15 / #20150213229

Fault diagnosis method and apparatus

A fault diagnosis method is provided. The method includes: performing a technological process of a diagnostic object to obtain an online operation data sample; extracting a first set of data in a first predetermined period of time from the online operation data sample set as a detecting antigen; calculating deviations of the detecting antigen and all of normal antibodies in a normal antibody database to obtain a first deviation set; determining whether each deviation in the first deviation set is less than a normal antibody threshold; if each deviation in the first deviation set is less than the normal antibody threshold, determining that the technological process is normal, else determining that there is a fault in the technological process.. ... Tsinghua University

07/30/15 / #20150212204

Method and device for detecting surroundings

A method for detecting surroundings of a software radio is provided, wherein the software radio comprises a first directional antenna and a second directional antenna, and the method comprises: sending a directional signal towards a preset direction by the first directional antenna; receiving a return signal from the preset direction by the second directional antenna, and obtaining a round trip time according to the directional signal and the return signal; obtaining a distance between the software radio and an object in the preset direction according to the round trip time; adjusting the preset direction and repeating above steps, until distances between the software radio and objects in respective directions are obtained; obtaining the surroundings of the software radio according to the distances between the software radio and objects in respective distances.. . ... Tsinghua University

07/23/15 / #20150208344

Method for transmitting data using tail time in cellular network

A method for transmitting data using a tail time in a cellular network comprising steps of: receiving a data transmission request from a mobile terminal, and inserting the data transmission request into a real-time request queue or a delay-tolerant request queue according to a type of the data transmission request; determining a tail time according to a state of a rrc state machine and a throughput of the mobile terminal; and obtaining the data transmission request to be transmitted from the real-time request queue or the delay-tolerant request queue, and transmitting the real-time data transmission request directly as there are real-time data transmission requests in the real-time request queue, and transmitting the delay-tolerant data transmission request using the tail time when the tail time is available for transmitting data or transmitting the delay-tolerant data transmission request directly when a deadline of the delay-tolerant data transmission request is approached.. . ... Tsinghua University

07/23/15 / #20150207324

Voltage control method and apparatus of central bus in power system

A voltage control method and apparatus of a central bus in a power system are provided. The method comprises: s1: obtaining a predetermined voltage and a current voltage; s2: obtaining a first voltage adjustment of the generator and a second voltage adjustment of the dynamic reactive power compensation device; s3: sending the first voltage adjustment and the second voltage adjustment; s4: judging whether a current reactive power of the dynamic reactive power compensation device is between a first predetermined reactive power and a second predetermined reactive power; s5: if yes, obtaining a third voltage adjustment of the generator and a fourth voltage adjustment of the dynamic reactive power compensation device; s6: sending the third voltage adjustment and the fourth voltage adjustment; repeating steps s1-s7 after a predetermined period of time; s7: if no, repeating steps s1-s7 after the predetermined period of time.. ... Tsinghua University

07/23/15 / #20150206766

Method for making bowl shaped metal nanostructure array

A method for making bowl shaped metal nanostructure includes providing a metal layer located on a substrate. The metal layer has a top surface away from the substrate. ... Tsinghua University

07/23/15 / #20150206720

Bowl shaped metal nanostruture array

A bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. Each particle-in-bowl structures includes a bowl shaped concave structure and a protruding member protruding from the bowl shaped concave structure. ... Tsinghua University

07/23/15 / #20150204791

Raman detecting system

A raman detecting system includes a bowl shaped metal nanostructure array configured to load a sample, a projecting module configured to project a beam of light to the bowl shaped metal nanostructure array, and a receiving module configured to collect the light scattered by the bowl shaped metal nanostructure array. The bowl shaped metal nanostructure array includes a substrate having a surface and a number of particle-in-bowl structures located on the surface of the substrate. ... Tsinghua University

07/23/15 / #20150203632

Method for making carbon nanotube composite structure

A method for making a carbon nanotube composite structure includes suspending a carbon nanotube layer in a reactor. A polymer monomer solution and an oxidant solution are gasified by a pressure to form polymer monomer solution gas and oxidant solution gas. ... Tsinghua University

07/16/15 / #20150199243

Data backup method of distributed file system

A data backup method of a distributed file system is provided. The method is based on a comparison of a source file system and a target file system. ... Tsinghua University

07/09/15 / #20150192689

Gantry configuration for combined mobile radiation ispection system

The present invention discloses a gantry configuration for a combined mobile radiation inspection system comprising a first arm frame, a second arm frame and a third arm frame. The first, second and third arm frames define a scanning channel to allow an inspected object to pass therethrough. ... Tsinghua University

07/09/15 / #20150192531

Vehicular radiation inspection system

The present invention discloses a vehicular radiation inspection system comprising a mobile vehicle body, a detection arm, a radiation source and a detector. The vehicular radiation inspection system further comprises a following mechanism separated from the detection arm. ... Tsinghua University

07/09/15 / #20150191357

High-density and high-hardness graphene-based porous carbon material, method for making the same, and applications using the same

A method for making graphene-based highly dense but porous carbon material with a high degree of hardness includes forming a sol by dispersing a graphene-based component in a solvent; preparing a graphene-based gel by reacting the sol in a reacting container at a temperature of about 20° c. To about 500° c. ... Tsinghua University

07/02/15 / #20150187535

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 including an electron acceleration unit, an electron emission unit, and a target; a shielding and collimating device, including a shielding structure and a collimator arranged in the shielding structure, wherein the target is surrounded by the shielding structure, the collimator is arranged in a direction passing through the target point and forming an angle from 30 degrees to 150 degrees with the electron beam shooting the target.. ... Tsinghua University

07/02/15 / #20150186839

Whole-course visualization system and method for logistics articles

The disclosure provides a whole-course visualization system for logistics articles, including: an information collecting subsystem, including a plurality of information collecting units, which are respectively deployed at different sites along a logistics route, and configured to collect id information of a parcel and acquire image information of an article in the parcel; and an information center processing subsystem, configured to store and manage data of the id information and image information collected by and sent from the information collecting units, and send the stored data to the information collecting units according to requests from information collecting units; wherein the information collecting units compare data sent from the information center processing subsystem with the id information and image information collected by information collecting units, and determine whether the collected id information and image information are consistent with the data sent from information center processing subsystem.. . ... Tsinghua University

07/02/15 / #20150186374

Retrieving system, retrieving method, and security inspection device based on contents of fluoroscopic images

Disclosed are a retrieving system and a retrieving method based on content of fluoroscopic images, the retrieving system comprising: a pre-classifying module, configured to pre-classify fluoroscopic images; an image content feature extracting module, configured to perform feature extraction for contents of the fluoroscopic images; an image representing module, configured to construct an image representation vector; a retrieving module, configured to construct a result of preliminary candidates; a diversified filtering module, configured to filter the result of preliminary candidates, select an image subset capable of covering a plurality of article categories, and thereby construct a diversified retrieval result; a correlation feedback regulating module, configured to receive information feedback on the retrieval result from a user, and update the retrieval model; and an interacting module, configured to display the retrieval result, and collect feedback on user's satisfaction of the retrieval result.. . ... Tsinghua University

07/02/15 / #20150186163

Application virtualization system and method

In an application virtualization method, a first scanning step for scanning a target operation system and recording document information and registry information of the target operation system; a tracking step for installing an application to the target operation system and tracking operations to the document information and the registry information of the target operation system during installing the application; a second scanning step for scanning the target operation system and obtaining changes of the document information and the registry information of the operation system; and a launcher generating step for generating a launcher for starting up the application according to the changes of the document information and the registry information of the operation system are included. The present disclosure also provides an application virtualization system. ... Tsinghua University

07/02/15 / #20150185356

X-ray fluoroscopic imaging system

The present invention may perform fluoroscopic imaging simultaneously on the subjects in at least two channels using only one electron accelerator, at least two sets of x-ray beams and at least two sets of detector systems, through the design of the electron accelerator, the shielding and collimating device, the at least two detector arrays and various mechanical composite structures. The x-ray fluoroscopic imaging system according to the present invention may be designed in specific forms of a stationary type, an assembled type, a track mobile type or vehicular mobile type, etc., and has advantages such as simple structure, low cost, strong function, good image quality and the like.. ... Tsinghua University

07/02/15 / #20150185335

Multiple technologies composite scintillation detector device

The invention presents a backscattering scintillation detector. The scintillation detector includes a scintillation crystal detector; a x-ray sensitizing screen, which is disposed forward the scintillation crystal detector and where a backscattered x-ray from an object to be detected is processed and then at least part of the processed x-ray is incident to scintillation crystal detector; and photoelectric multiplier, which is disposed backward the scintillation crystal detector and is configured to collect a light signal from scintillation crystal detector and convert it to an electrical signal. ... Tsinghua University

07/02/15 / #20150185166

X-ray fluoroscopic imaging system

The x-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector x-ray beam and a second collimator for extracting a high energy planar sector x-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the x-ray beam from the first collimator; and a high energy detector array for receiving the x-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.. ... Tsinghua University

07/02/15 / #20150185155

Gem identification method and apparatus

Embodiments of the present invention provide gem identification method and apparatus. The method comprises the steps: (a) placing a sample to be detected over a light transmission hole formed on a carrying surface of an object table and emitting, by an optical probe disposed below the carrying surface, an exciting light onto the sample through the light transmission hole and then collecting a raman scattered light from the sample by the optical probe; (b) acquiring a raman spectrogram of the sample from the collected raman scattered light from the sample; and (c) comparing the raman spectrogram with a reference raman spectrogram library for gems to identify the sample. ... Tsinghua University

06/25/15 / #20150181520

Method for saving energy for wireless sensor network

A method for saving energy for a wireless sensor network is provided, comprising: introducing a high energy device; defining a sensor node within a coverage of the high energy device as a source node or a forwarding node by the high energy device based on a routing relationship; sending sensed data to the high energy device by the source node at any time; and selecting a forwarding node at a working time to forward the data by the high energy device while making the other forwarding nodes at a dormancy time.. . ... Tsinghua University

06/25/15 / #20150178444

Method and device for determining hydrophobic energy of protein

A method and a device for determining hydrophobic energy of protein are provided. The method for determining hydrophobic energy of the protein includes: based on space coordinates of the amino acids, determining distances of one amino acid to the remaining amino acids (s100); based on the distances, determining embedding coefficients of the amino acids (s200); and based on the embedding coefficients, determining the hydrophobic energy of the protein (s300).. ... Tsinghua University

06/25/15 / #20150176930

Oriented flexible heat-conducting material, and forming process and application thereof

The present invention provides an oriented flexible heat-conducting material, where main ingredients of the oriented flexible heat-conducting material are silicone rubber and anisotropic heat-conducting filler. Multiple continuous heat-conducting paths that are parallel to each other are formed in the oriented flexible heat-conducting material, and the heat-conducting paths are formed by continuously arranging the anisotropic heat-conducting filler, filled in the silicone rubber, in lines in a heat-conducting path direction. ... Tsinghua University

06/25/15 / #20150174440

Method for mechanochemical treatment of solid wastes containing perfluorinated or polyfluorinated compounds

A method for mechanochemical treatment of solid wastes containing perfluorinated or polyfluorinated compounds is provided. It belongs to the field of environment-polluting wastes treatment, and comprises the following steps: mixing the solid waste containing perfluorinated or polyfluorinated compounds with the defluorination reagent under normal temperature and pressure conditions, putting the mixture into a planetary high-energy ball milling reactor; adopting the mechanochemical reaction to realize high-effective degradation and defluorination of perfluorinated or polyfluorinated compounds. ... Tsinghua University

06/18/15 / #20150172094

Component-based task allocation method for extensible router

The present disclosure relates to a component-based task allocation method for an extensible router, comprising: s1: selecting components that needs to be activated from a component library, generating a topology structure of the components, and measuring load of each component; s2: selecting a super master control and a backup super master control from master controls, allocating the components, generating a task allocation table and a task updating message according to dynamic allocation algorithms; and s3: receiving the task updating message from the super master control by the other master controls, and activating the components that need to be activated and registering to a component manager. Thus, the tasks can be allocated uniformly.. ... Tsinghua University

06/18/15 / #20150172084

Satellite navigational signal generating method generating device receiving method and receiving device

The application relates to the satellite navigation signal, generating method, generating device, receiving method and receiving device. The navigation satellite signal generating device includes a baseband signal generator, a multiplexed signal generator and a modulator. ... Tsinghua University

06/18/15 / #20150169768

Multitasking resource allocation system and method on internet of things service platform

The present disclosure relates to a method including: receiving resource requests from clients and converting the resource requests into search requests in sequence; searching a resource list of sensor nodes of cloud according to search conditions of the search request and obtaining a resource id of the sensor node that meets the search conditions; searching a data list of the sensor node and reading a working frequency of the sensor node in the resource list; comparing the working frequency with a desired frequency in the search conditions to determine if buffered data in the data list can meet requirements; feeding back the buffered data to the clients if the buffered data meets the requirements; and controlling the sensor nodes to collect data according to the search conditions and priorities of the sensor nodes and sending the collected data to the clients if the buffered data cannot meet the requirements.. . ... Tsinghua University

06/11/15 / #20150163668

Protecting system and method for privacy information in mobile terminal

The present disclosure disclosures a protecting system and method for privacy information in a mobile terminal. In the system, a crowdsourcing database stores security strategy information of applications. ... Tsinghua University

06/11/15 / #20150161030

Detecting method and system for concurrency bugs

In a detecting method for concurrency bugs, a current fetter set is defined for a dynamic instance of a static instruction in program invariants. A belonging invariants set and an enforcing invariants set from the current fetter set are extracted. ... Tsinghua University

05/28/15 / #20150145478

Method and device for charging electric vehicle in power system

A method and a device for charging an electric vehicle in a power system are provided. The method includes: obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement at the dispatching time; determining a charging period corresponding to the plurality of electric vehicles; determining a forecast period, and obtaining a charging requirement, a remaining charging energy capacity and a maximum charging power; establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model, and establishing a second constraint of the charging model; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period so as to charge each electric vehicle under the optimal charging power.. ... Tsinghua University

05/28/15 / #20150145477

Method and device for charging electric vehicle in power system

A method and a device for charging an electric vehicle in a power system are provided. The method includes: obtaining a first electric vehicle connected to the power system, and obtaining a rated charging power and a first charging requirement; determining a first charging period corresponding to the first electric vehicle; determining a forecast period, and obtaining a second electric vehicle to be connected to the power system; revising the first charging period to obtain a second charging period, and obtaining a second charging requirement and a maximum charging power; establishing a charging model, establishing a first constraint of the charging model, and establishing a second constraint of the charging model; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power so as to charge each first electric vehicle under the optimal charging power.. ... Tsinghua University

05/21/15 / #20150136470

Selection method for strong wind region composite insulator based on structure parameters, and composite insulator

A selection method for a strong wind region composite insulator based on structure parameters, and a composite insulator are disclosed. When a selection is made among a plurality of composite insulators according to the selection method, structure parameters of the composite insulators are measured first, and then the selection is made according to certain ranges of the parameters, a selected composite insulator is tested, and it is found that it may withstand strong wind climate environments where the highest wind speed reaches 50 m/s. ... Tsinghua University

04/23/15 / #20150111100

Electrode active material of lithium ion battery and method for making the same

A method for making an electrode active material of a lithium ion battery is provided. A sulfur grafted poly(pyridinopyridine) is synthesized. ... Tsinghua University

04/16/15 / #20150106655

Fault diagnosing method based on simulated vaccine

A fault diagnosing method based on a simulated vaccine is provided. The fault diagnosing method comprises steps of: establishing a dynamic simulation model for simulating a start-up operation and a steady-state operation of a technological process according to process information, an operating procedure and historical data of the technological process; running the dynamic simulation model; extracting data within a first predetermined time from the simulated normal sample set to generate a normal simulated vaccine, and extracting data within a second predetermined time from the simulated fault sample set to generate a fault simulated vaccine; acquiring the historical data of the technological process; obtaining an immune antibody coefficient of the normal simulated vaccine, and generating a normal antibody library; and obtaining an immune antibody coefficient of the fault simulated vaccine, and generating a fault antibody library according to the fault simulated vaccine.. ... Tsinghua University

04/16/15 / #20150103716

Method for controlling hibernation of nodes of wireless sensor network

In a method for controlling hibernation of nodes of a wireless sensor network (wsn), the nodes are classified into a number of groups, each of which monitors one location and has at least two nodes. Redundant hibernation is applied to the nodes in each group. ... Tsinghua University

04/16/15 / #20150103694

Wireless sensor network, method and system for adjusting behaviors of wireless sensor nodes in wireless sensor network

A method and a system for adjusting behaviors of wireless sensor nodes in a wireless sensor network, and a wireless sensor network are provided. The method comprises: initializing wireless sensor nodes in the wireless sensor network, in which each of a node role queue and a high energy device queue of the node is initialized to be empty; for a high energy device in the wireless sensor network, computing a node role of each surrounding wireless sensor node, broadcasting a message including the node role of each surrounding wireless sensor node and an identifier of the high energy device; for each wireless sensor node, receiving the message broadcast by the high energy device, updating the node role queue and the high energy device queue according to the message, and adjusting a behavior thereof according to the updated node role queue.. ... Tsinghua University

04/02/15 / #20150092724

Method, apparatus and system for sending physical layer signal

. . Embodiments of the present invention disclose a method, an apparatus and a system for sending a physical layer signal, where the method for sending a physical layer signal includes: constructing a signal frame of a physical layer signal, where the signal frame includes one single-frequency sequence, the single-frequency sequence is used to enable a receiving apparatus to capture the signal frame in a frequency domain according to the single-frequency sequence, and the single-frequency sequence includes a plurality of single-frequency preset symbols; and sending the physical layer signal based on the signal frame. Applying the present invention can facilitate capturing the signal frame in a frequency domain by a receive end, and therefore, not only impact caused by frequency offset is overcome, but also multipath energy may be used effectively to improve performance of capturing.. ... Tsinghua University

04/02/15 / #20150091555

Apparatus for detecting magnetic flux leakage signals

An apparatus for detecting magnetic flux leakage signals is provided. The apparatus includes: m three-axis magnetic field sensors configured to detect a three-dimensional magnetic field intensity in m locations respectively to obtain m three-dimensional magnetic field intensity data, in which m is an integer larger than three; a field programmable gate array configured to receive and process the m three-dimensional magnetic field intensity data respectively; a main control chip configured to receive and pack the processed m three-dimensional magnetic field intensity data; and a data output interface configured to output the packed m three-dimensional magnetic field intensity data.. ... Tsinghua University

03/26/15 / #20150088470

Method and device for identifying feasibility of transmission interface constraint in online rolling dispatching

A method and a device for identifying a feasibility of a transmission interface constraint in an online rolling dispatching are provided. The method comprises: s1, establishing an online rolling dispatching model including a transmission interface constraint; s2, establishing a lagrangian relaxation dual problem of the online rolling dispatching model; and s3, identifying a feasibility of the transmission interface constraint by solving the lagrangian relaxation dual proble. ... Tsinghua University

03/26/15 / #20150087153

Method of manufacturing howllow-structure metal grating

A method for making a hollow-structure metal grating is provided. The method includes providing a substrate, forming a patterned mask layer on a surface of the substrate, applying a metal layer with a thickness greater than 10 nanometers on the patterned mask layer, and removing the patterned mask layer by a washing method using organic solvent. ... Tsinghua University

03/26/15 / #20150087152

Method of manufacturing howllow-structure metal grating

A method for making a hollow-structure metal grating is provided. The method includes the following steps. ... Tsinghua University

03/26/15 / #20150086461

Method for making lithium iron phosphate

A method for making lithium iron phosphate is provided. A lithium chemical compound, a ferrous chemical compound, and a phosphate-radical chemical compound are mixed in an organic solvent to form a mixture. ... Tsinghua University

03/26/15 / #20150085989

Apparatus and a method for generating a flattening x-ray radiation field

An apparatus and a method are for generating a flattening x-ray radiation field. The apparatus includes: plurality of electron accelerators for generating high-energy electron beam current; and a common target unit including a vacuum target chamber, a target and plurality of input connectors. ... Tsinghua University

03/26/15 / #20150085973

Computed tomography device based on straight trajectory and x-ray imaging device

A straight trajectory ct device can be used in radiation imaging. The device includes: a ray-generating unit that generates a ray within a specific range of field angle; a channel for an object to be inspected though which the object to be inspected passes; a first collimator; and a ray receiving unit provided on both sides of the channel for the object to be inspected. ... Tsinghua University

03/26/15 / #20150085364

Howllow-structure metal grating

A hollow-structure metal grating is provided. The hollow-structure metal grating includes a substrate, a number of connecting metal layers, and a number of hollow metal protrusions spaced and located on a surface of the substrate. ... Tsinghua University

03/26/15 / #20150085302

Method for measuring displacement of large-range moving platform

A method for measuring displacement of a large-range moving platform, comprising: arranging multiple beams of first measuring light parallel to one another and generated by an optical path distribution device and a position sensitive detector array in a certain manner, to ensure that at least one beam of first measuring light is detected by the position sensitive detector array when a moving platform is at any position of a moving area; a detection head array capable of determining whether a light beam is shaded being used for auxiliary measurement of a position of the moving platform; and determining a position of the moving platform that corresponds to the first measuring light measured by the position sensitive detector array, to calculate displacement of the moving platform. The method effectively enlarges a measurement range of the position sensitive detector array, and implements measurement of long range displacement of the moving platform.. ... Tsinghua University

03/26/15 / #20150085278

Raman spectrum measuring method for drug inspection

A raman spectrum measuring method for drug inspection is provided, comprising: measuring raman spectrum of a sample to be inspected to acquire an original raman spectrum curve of the sample; determining whether the original raman spectrum curve has a characterizing portion, and if not, measuring a mixture of the sample and an enhancing agent to acquire an enhanced raman spectrum curve of the sample; and if the original raman spectrum curve of the sample to be inspected has a characterizing portion, comparing the original raman spectrum curve of the sample with data in an original raman spectrum database of a drug to determine whether the sample contains the drug, otherwise, comparing the enhanced raman spectrum curve of the sample with data in an enhanced raman spectrum database of the drug to determine whether the sample to be inspected contains the drug.. . ... Tsinghua University

03/26/15 / #20150085141

Method and apparatus for calibrating multi-spectral sampling system

A method and an apparatus for calibrating a multi-spectral sampling system are provided. The method includes: sampling scene information of a scene to obtain a two-path multi-spectral image comprising a multi-spectral image consisting of a plurality of sampling points and a rgb color image; calibrating a spectrum of each of the plurality of sampling points to obtain a spatial location thereof and a spectral wavelength corresponding to the spatial location; providing two scanning videos in different scanning directions, demonstrating and shooting the two scanning videos to obtain two two-path multi-spectral videos, in which each two-path multi-spectral video comprises a multi-spectral video and a rgb color video; and based on the spatial location of each of the plurality of sampling points, obtaining a matching point of each of the plurality of sampling points, so as to implement a spatial location calibration of the multi-spectral sampling system.. ... Tsinghua University

03/26/15 / #20150084550

Electron linear accelerator systems

The present disclosure discloses an electron linear accelerator system. In the present disclosure, a fast-switching dual-path microwave system is proposed, wherein, one path can be directly connected to an accelerating tube, and the other path can be input into the accelerating tube after a magnitude of the microwave power is changed by devices such as an attenuator, a power divider, a pulse compressor or even an amplifier etc., so as to achieve fast switch of the power input into the accelerator and adjust the energy output by the accelerator.. ... Tsinghua University

03/26/15 / #20150084549

Methods for controlling standing wave accelerator and systems therof

The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. ... Tsinghua University

03/19/15 / #20150081927

Method for constructing internet address schemes using xml

In a method for constructing internet protocol (ip) addresses using extensible markup language (xml), an xml schema associated with a predetermined type of internet address schemes is defined using a universal description standard. The xml schema includes attribute elements covering core attributes of constructing the internet address schemes. ... Tsinghua University

03/19/15 / #20150081700

Data routing method in wireless sensor network, base station node and wireless sensor network

A data routing method in a wireless sensor network, a base station node, and a wireless sensor network are provided. The data routing method comprises: establishing a routing table for a base station node in the wireless sensor network, in which the routing table comprises a plurality of data types and a plurality of destination addresses corresponding to the plurality of data types; receiving a search request by the base station node, and searching for the destination address corresponding to the search request in the routing table according to the search request; determining a memory corresponding to the destination address and obtaining target data satisfying the search request from the memory; and feeding back the target data to the base station node from the memory.. ... Tsinghua University

03/19/15 / #20150078510

X-ray apparatus and a ct device having the same

The present application provides a curved surface array distributed x-ray apparatus, characterized in that, it comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged on the wall of the vacuum box in multiple rows along the direction of the axis of the curved surface in the curved surface facing the axis; an anode made of metal and arranged in the axis in the vacuum box which comprises an anode pipe and an anode target surface; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply.. . ... Tsinghua University

03/19/15 / #20150078509

X-ray apparatus and a ct device having the same

A two dimensional array distributed x-ray apparatus of this disclosure comprises: a vacuum box which is sealed at its periphery, and the interior thereof is high vacuum; a plurality of electron transmitting units arranged in one plane in a two dimensional array on the wall of the vacuum box; an anode having targets corresponding to the plurality electron transmitting unit arranged in parallel with the plane of the plurality of electron transmitting units in the vacuum box; a power supply and control system having a high voltage power supply connected to the anode, a filament power supply connected to each of the plurality of the electron transmitting units, a grid-controlled apparatus connected to each of the plurality of electron transmitting units, a control system for controlling each power supply; wherein the anode comprises: an anode plate made of metal and parallel to the upper surface of the electron transmitting unit; a plurality of targets arranged on the anode plate and disposed corresponding to the positions of the electron transmitting unit, the bottom surface of the target is connected to the anode plate and the upper surface of the target has a predetermined angle with the anode plate.. . ... Tsinghua University

03/19/15 / #20150077032

Single degree of freedom vibration isolating device of linear motor and motion control method thereof

A single degree of freedom vibration isolating device of a linear motor and a motion control method thereof. The vibration isolating device comprises a balance block, an anti-drifting driving unit, and a control unit. ... Tsinghua University

03/12/15 / #20150074478

Method for scan testing three-dimensional chip

A method for scan testing a three-dimensional chip, comprising: establishing a scan forest structure for the three-dimensional chip; generating a first test set and a plurality of test periods, and dividing the first test set into a plurality of test subsets; distributing test vectors in the plurality of test subsets into the plurality of test periods; obtaining a current hotspot of the three-dimensional chip; ranking the plurality of test subsets in accordance with an order of temperature rising values from small to large to obtain a test vector strategy; selecting the test subsets corresponding to the temperature rising values less than a temperature threshold from the plurality of test subsets according to the test vector strategy, so as to generate a second test set; and applying the second test set to the scan forest structure, and updating the current hotspot of the three-dimensional chip.. . ... Tsinghua University

03/05/15 / #20150067841

Method for hiding source of wireless sensor network and node

A method for hiding a source of a wireless sensor network and a node are provided. The method comprises: determining a first node having a shortest distance from the source; sending a real data packet via a shortest path between the first node and a base station, wherein the real data packet is generated by the first node according to the source; selecting a second node satisfying a preset condition on the shortest path as an initial false source node; establishing a false path with the initial false source node as a terminal node of the false path; and sending a false data packet to the initial false source node via the false path, such that the real data packet is hidden by the false data packet.. ... Tsinghua University

03/05/15 / #20150065342

Carbon nanotube sponge and method for making the same

The present disclosure relates to a method for making a carbon nanotube sponge. A carbon nanotube film structure comprising a plurality of carbon nanotubes and an oxidizing solution formed by an oxidizing agent and hydrogen peroxide is provided. ... Tsinghua University

02/19/15 / #20150048964

Millimeter wave three dimensional holographic scan imaging apparatus and inspecting method thereof

A millimeter wave three dimensional holographic scan imaging apparatus and a method for inspecting an object to be inspected using the same are disclosed. The apparatus includes a millimeter wave transceiver module with a millimeter wave transceiver antenna array for transmitting and receiving a millimeter wave signal. ... Tsinghua University

02/12/15 / #20150041392

Method and system using micro/nano bubbles for enhanced in situ remediation of polluted groundwater

Provided is a method using micro/nano bubbles for enhanced in situ remediation of polluted groundwater, comprising: arranging a water injection pipe (7) at an upstream location of an area where groundwater is polluted; introducing thereto a micro/nano bubbles-containing water having nutrient salt(s) therein; transferring the micro/nano bubbles-containing water having nutrient salt(s) with the movement of groundwater to the polluted area, decomposing organic pollutants or continuously replenishing electron acceptor(s)/donor(s) for microorganisms to facilitate the degradation and removal of the organic pollutants; meanwhile, arranging a water extraction pipe (17) at the downstream of the polluted area to extract water and form a groundwater flow-field; setting up a monitoring well for real-time monitoring and analyzing of parameters during the removal process of the organic pollutants and adjusting the occurrence time and the amount of aeration of the micro/nano bubbles. Also provided is a system using the micro/nano bubbles for enhanced in situ remediation of the polluted groundwater. ... Tsinghua University

01/29/15 / #20150032895

System and method for evaluating performance and evolution ability of network address and identification schemes

In a method, formal descriptions of network address and identification schemes are received. Then validity and completeness of the formal descriptions are verified. ... Tsinghua University

01/29/15 / #20150031037

Micro-reactor device

In some aspects, the present disclosure provides a magnetic rack comprising a lateral movement structure and/or a longitudinal movement structure. In particular embodiments, the lateral movement structure and/or longitudinal movement structure move one or more magnets to or away from a reaction tube, in order to control the magnetic forces exerted on microbeads in the reaction tube. ... Tsinghua University

01/08/15 / #20150012242

Planar motor rotor displacement measuring device and its measuring method

A planar motor rotor displacement measuring device and its measuring method are provided. The motor is a moving-coil type planar motor. ... Tsinghua University

01/08/15 / #20150010825

Graphene composite material, methods for making graphene and graphene composite material, and lithium sulfur battery using the same

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

01/01/15 / #20150001623

Field effect transistor and method for forming the same

A field effect transistor and a method for forming the same are provided. The field effect transistor comprises: a substrate (100); an ultra-thin insulator layer (200) formed on the substrate (100), wherein a material of the ultra-thin insulator layer (200) is a monocrystalline rare earth oxide or a monocrystalline beryllium oxide; an ultra-thin semiconductor monocrystalline film (300) formed on the ultra-thin insulator layer (200); and a gate stack (400) formed on the ultra-thin semiconductor monocrystalline film (300), and comprising a gate dielectric (410) and a gate electrode (420) formed on the gate dielectric (410).. ... Tsinghua University

01/01/15 / #20150000269

Turbo-compound apparatus having variable geometry turbocharger turbine and engine system having the same

A turbo-compound apparatus having a variable geometry turbocharger turbine and an engine system having the same are provided. The turbo-compound apparatus includes a variable geometry turbocharger turbine connected to an exhaust manifold of the engine and having an adjustable mechanism to distribute the exhaust energy between two turbines; a power turbine fitted downstream of the variable geometry turbocharger turbine and driven by exhaust gas passing through the variable geometry turbocharger turbine, an output end of the power turbine being adapted to connect with a crankshaft of the engine to transfer mechanical work output from the power turbine to the crankshaft; and an actuator configured to control the adjustable mechanism according to actual engine operation conditions to regulate the exhaust energy distribution between the variable geometry turbocharger turbine and the power turbine.. ... Tsinghua University








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