Patents Assigned to Shenzhen University
  • Patent number: 11029209
    Abstract: The present application provides a spectral phase interference device and system for addressing the problem of low stability and compactness with prior art spectral phase interference devices. In the device or system provided in the present application, the optical element for generating the pulse pair to be measured consists of only a birefringent crystal and the adjustment of two-step phase shift is also completed by only a broadband quarter-wave plate. Therefore, wide application of optical elements such as pulse stretchers, retarders, optical splitters and mirrors as in prior art devices is avoided, thereby significantly simplifying the overall device's structure and resulting in enhanced stability and compactness at the same time.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: June 8, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Shixiang Xu, Shuiqin Zheng, Yi Cai, Qinggang Lin, Huangcheng Shangguan, Junmin Liu
  • Publication number: 20210168551
    Abstract: An auxiliary sensing method and system based on sensory substitution includes: establishing a discrete horizontal plane included angle and a normal vector included angle in three-dimensional space as well as response functions corresponding to different discrete distances, and establishing an acoustic coding library of an object; obtaining a surrounding environmental video; obtaining object information and category of current environment; establishing a three-dimensional sound field of the object according to the image information, the object information and the three-dimensional coordinate information obtained in combination with the acoustic coding library of the object; and adjusting, for objects of different categories, the three-dimensional sound field of each object according to movement information and variations of images, and playing the three-dimensional sound field of each object in real time.
    Type: Application
    Filed: November 3, 2020
    Publication date: June 3, 2021
    Applicant: SHENZHEN UNIVERSITY
    Inventors: Kaishun WU, Yongzhi HUANG, Lu WANG, Kaixin CHEN
  • Publication number: 20210151767
    Abstract: Provided by the present invention is a cathode material for a sodium-ion battery with a coating structure and a preparation method therefor. In the present invention, an Na3V2(PO4)3/C cathode material is prepared by means of a sol-gel method. Synthesized zwitterionic polymers may be used as chelating agents and as a carbon source; the process is simple, can quickly form a gel, and the reaction time is shortened contains a zwitterionic structure which may be well dissolved with the precursor of sodium vanadium phosphate to form a stable carbon coating layer. Compared to the prior art, the cathode material for a sodium-ion battery of the present invention enhances the electrical conductivity and cycle performance of the cathode material by means of the doping of nitrogen and sulfur on carbon. At the same time, the prepared cathode material for a sodium-ion battery has sodium vacancies and maintains a stable structure during the process of sodium-ion intercalation/deintercalation.
    Type: Application
    Filed: May 14, 2019
    Publication date: May 20, 2021
    Applicant: SHENZHEN UNIVERSITY
    Inventors: Haitao ZHUO, Shaojun CHEN, Yuxin CHEN
  • Patent number: 11009773
    Abstract: The present invention belongs to the technical field of lasers and provides a dual-chirped spectral optical parametric amplifier and an amplification method. A femtosecond laser assembly is configured to generate simultaneous pump and signal waves which successively pass through an input grating and an input collimator respectively. The various spectrum components of both the pump and the signal waves linearly disperse and focus on respective focal points, and present spatial chirps with opposite frequency gradients in the respective focal planes. A full-spectrum optical parametric amplification of the signal wave with the pump wave is performed via a fan-out periodically poled crystal, resulting an ultrabroad idler wave. The ultrabroad idler wave is separated from the hybrid waves via an optical splitter, and then passes successively through an output collimator and an output grating, and is Fourier transformed from frequency domain to temporal domain.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: May 18, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Haizhe Zhong, Yuhai Liang, Dahua Dai, Ying Li, Dianyuan Fan
  • Patent number: 11002661
    Abstract: An apparatus for identifying metal corrosion includes a metal test piece, a push button timer, a liquid tank, a support, two fixed pulleys, a traction cable, a weight and a vibration motor. The support and the first pulley are in a lower portion of the tank. The second pulley is above the first pulley. The test piece is fixed on the support and connected to a first end of the traction cable which sequentially winds around the pulleys with a second end outside the tank. The weight, on which the motor is fixed, is suspended at the second end. The timer is under the motor. A corrosion solution is added into the tank, and the vibration motor provides alternating stress. When the metal test piece is broken, the weight and the motor are dropped and pressed on the electronic timer to record breaking time of the metal test piece.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 11, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Dawang Li, Feng Xing, Jiazhao Liu, Longyuan Li
  • Publication number: 20210136573
    Abstract: Provided is a physical layer blind authentication method for a time-varying fading channel based on a smoothing technique.
    Type: Application
    Filed: December 13, 2017
    Publication date: May 6, 2021
    Applicant: Shenzhen University
    Inventors: Ning XIE, Li ZHANG
  • Patent number: 10989598
    Abstract: The present disclosure relates to a method and related system for spectrum optimization of an illumination light source. Spectrum optimization according to the present disclosure can be based on various optimization parameters, including but not limited to luminous efficacy, color rendering effect, luminous efficacy of radiation, mesopic efficacy of radiation, cirtopic efficacy of radiation, etc. The present method and system are capable of optimizing illumination performance of a light source in various aspects in an individual or integrated manner. Further, the present method and system are capable of accommodating different illumination purposes and conditions by combining and prioritizing different optimization parameters.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: April 27, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventor: Qi Yao
  • Patent number: 10985554
    Abstract: An equilibrium-conductance-compensated eccentric method for obtaining power transfer coefficients of a direct current (DC) power network, including: establishing an equilibrium-conductance-compensated globally-linear function that relates all bus translation voltages to a bus injection power according to given bus load parameters and given bus source parameters of the DC power network; establishing an equilibrium-conductance-compensated globally-linear eccentric matrix-equation model for steady state of the DC power network; establishing an equilibrium-conductance-compensated globally-linear eccentric matrix relation between non-reference bus injection powers and non-reference bus translation voltages by using ordinary inversion of matrices; establishing an equilibrium-conductance-compensated globally-linear eccentric expression of a branch-transferred power in terms of the non-reference bus injection powers; and obtaining power transfer coefficients of the DC power network according to the equilibrium-conduc
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 20, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Jianchun Peng, Hui Jiang
  • Patent number: 10975694
    Abstract: A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 13, 2021
    Assignees: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, SHENZHEN UNIVERSITY
    Inventors: Yang Ju, Heping Xie, Yong Zhang, Yan Zhu, Feng Gao, Xiaodong Nie, Changbing Wan, Jinxin Song, Chang Lu, Hongbin Liu, Zhangyu Ren
  • Patent number: 10968386
    Abstract: Disclosed is a pentamethine cyanine dye of formula (I) and a method of producing the same, where the dye is suitable as a fluorescent material for the STORM and SOFI super-resolution imaging.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: April 6, 2021
    Assignee: Shenzhen University
    Inventors: Zhigang Yang, Junle Qu, Wufan Liu
  • Patent number: 10964107
    Abstract: The present disclosure relates to a system for acquiring a correspondence between light rays of a transparent object. The system includes a camera device, a display device, a turntable and a control device; the camera device, the display device and the turntable are electrically connected with the control device respectively; the turntable is configured to rotate a transparent object; the control device is configured to acquire images corresponding to display device in the first preset position, which are photographed by the camera device through the transparent object at different rotation angles, to obtain a primary image set; acquire images corresponding to the display device in the second preset position, which are photographed by the camera device through the transparent object at different rotation angles, to obtain a secondary image set; and obtain the correspondence between light rays of the transparent object from different viewing angles.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: March 30, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Hui Huang, Bojian Wu
  • Patent number: 10935653
    Abstract: A multi-target tracking method applicable to a cluttered environment includes a prediction step, a classification step, an updating step, a pruning and extracting step, a generation step, a supplement step and a combining step. A multi-target tracking system applicable to a cluttered environment is also provided. The present invention has the characteristic of a fast processing speed, and at the same time, effectively solves the problem that the existing method fails to provide state estimation for a new target in the initial few moments after the new target appears.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: March 2, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Zongxiang Liu, Liangqun Li, Weixin Xie
  • Patent number: 10931871
    Abstract: A method including: putting a pre-set detection apparatus in a pipeline to be detected, collecting, every pre-set time, movement information about and pipeline image thereof; at each collection moment, calculating, according to movement information collected, first position where detection apparatus is located; calculating, according to pipeline image photographed, second position where detection apparatus is located; determining, according to first position and second position, position where detection apparatus is located so as to position pipeline according to position at each collection moment. By performing position information extraction by means of inertial navigation and video combined positioning algorithm, accurate positioning of pipeline position is realized, so as to accurately position crack inside pipeline according to photographed image and positioned pipeline position.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: February 23, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Qingquan Li, Jiasong Zhu, Chisheng Wang, Zhipeng Chen
  • Patent number: 10924318
    Abstract: Disclosed is a blind authentication method for a frequency selective fading channel based on belief propagation. The method includes: transmitting carrier signals to a frequency selective fading channel with multiple paths, where each carrier signal includes an authentication signal, a pilot signal and an information signal performing BKIC processing on a carrier signal in each path to obtain a target signal, and performing differential signal processing on the target signal to obtain a target authentication signal, obtaining a reference signal based on a key and the pilot signal in each path performing the differential signal processing on the reference signal to obtain a reference authentication signal, and calculating a correlation between the target authentication signal and the reference authentication signal to obtain a test statistic; and comparing the test statistic with a prescribed threshold to determine whether the carrier signal path can pass authentication.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: February 16, 2021
    Assignee: Shenzhen University
    Inventors: Ning Xie, Li Zhang
  • Publication number: 20210035388
    Abstract: A vibration-based authentication method for an access control system includes: collecting vibration signals generated by a built-in vibration motor in an authentication device; filtering, denoising, and performing endpoint segmentation on the collected vibration signals, and extracting vibration signals containing effective touch; performing an alignment on the segmented vibration signals; performing a fast Fourier transform on the aligned vibration signals to obtain frequency-domain data, extracting frequency-domain features obtained after alignment and features obtained before alignment to construct a training data set, and storing the training data set in a database of the authentication device; using a new unlock signal generated when a user touches the authentication device as test data, and processing the test data to obtain test data containing effective touch; and matching and classifying the test data containing effective touch with the training data set by using a machine learning classification mod
    Type: Application
    Filed: September 30, 2020
    Publication date: February 4, 2021
    Applicant: SHENZHEN UNIVERSITY
    Inventors: Kaishun WU, Yandao HUANG, Wenkai YANG, Lin CHEN
  • Patent number: 10909409
    Abstract: The present disclosure relates to a system and method for codebook construction and use thereof in image quality assessment. A codebook including a plurality of code words may be provided. Each one of the plurality of code words may have a reference score relating to image quality. A test image may be acquired. One or more feature vectors may be extracted from the test image based on statistical independence between neighboring divisive normalization transform coefficients of the test image. A score may be generated based on a comparison between the extracted feature vectors of the test image and at least some of the plurality of code words in the codebook and the corresponding reference scores of the code words.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: February 2, 2021
    Assignee: SHENZHEN UNIVERSITY
    Inventor: Ying Chu
  • Patent number: 10889719
    Abstract: Disclosed are a fluorescent dye, a preparation method and an application thereof. The fluorescent dye has a structure of formula (I), where X and Y are independently selected from O, S, C(CH3)2 and NR6; R2 and R3 are independently hydrogen or a functional group; R1, R4, R5 and R6 are independently selected from functional groups; and Z? is a negative ion. The fluorescent dye has an ability to permeate the living cell membrane, so that it can be used in the fluorescence imaging of living cell microstructures, and can also be used in the STED super-resolution fluorescence imaging and laser scanning confocal microscopy of live cells.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: January 12, 2021
    Assignee: Shenzhen University
    Inventors: Zhigang Yang, Junle Qu
  • Publication number: 20210003008
    Abstract: A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 7, 2021
    Applicants: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, SHENZHEN UNIVERSITY
    Inventors: Yang JU, Heping XIE, Yong ZHANG, Yan ZHU, Feng GAO, Xiaodong NIE, Changbing WAN, Jinxin SONG, Chang LU, Hongbin LIU, Zhangyu REN
  • Publication number: 20200400419
    Abstract: A pipeline three-dimensional curve measuring robot and implementation method therefor. The measuring robot includes an electronic bin, sliding rods, wheel bracket, walking wheels arranged on wheel bracket, odometer wheels arranged on sliding rod on one side and encoders; the electronic bin is internally provided with an inertia measurement unit, collection control module and power supply module; when measuring, the measuring robot is controlled to move back and forth in a pipeline collecting measuring data; comparing measured data with three-dimensional curve data at pipeline reference moment to obtain deformation quantity of pipeline three-dimensional curve.
    Type: Application
    Filed: November 28, 2019
    Publication date: December 24, 2020
    Applicant: SHENZHEN UNIVERSITY
    Inventors: Qingquan LI, Zhipeng CHEN, Yu YIN, Xiang CHENG, Jiasong ZHU
  • Patent number: 10851024
    Abstract: The present invention provides a concrete protective agent and a preparation method thereof, and a concrete protective film and a preparation method thereof. The concrete protective agent provided in the present invention includes the following components: water, oxalic acid, a defoaming agent, and a film-forming agent. When the concrete protective agent provided in the present invention is used for concrete protection, oxalic acid in the protective agent can react with calcium ions in concrete for in situ generation of calcium oxalate monohydrate inside and on a surface of concrete to obtain a protective film with strong adhesion to concrete. The film-forming agent in the protective agent is used as a template to adjust and control growth of calcium oxalate crystals, so as to improve waterproof performance and corrosion resistance to sulfate and chloride ions of the protective film. Preparation methods provided in the present invention are simple and practical and are suitable for mass production.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: December 1, 2020
    Assignee: Shenzhen University
    Inventors: Zhu Ding, Bingyao Tian, Mingyan Wang, Zhiwei Zhou, Chen Sun