Patents Assigned to Huazhong University of Science and Technology
  • Patent number: 10896080
    Abstract: An S.M.A.R.T. threshold optimization method used for disk failure detection includes the steps of: analyzing S.M.A.R.T. attributes based on correlation between S.M.A.R.T. attribute information about plural failed and non-failed disks and failure information and sieving out weakly correlated attributes and/or strongly correlated attributes; and setting threshold intervals, multivariate thresholds and/or native thresholds corresponding to the S.M.A.R.T. attributes based on distribution patterns of the strongly or weakly correlated attributes. As compared to reactive fault tolerance, the disclosed method has no negative effects on reading and writing performance of disks and performance of storage systems as a whole. As compared to the known methods that use native disk S.M.A.R.T. thresholds, the disclosed method significantly improves disk failure detection rate with a low false alarm rate.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: January 19, 2021
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Song Wu, Zhuang Xiong, Hai Jin
  • Publication number: 20210011857
    Abstract: A method and apparatus for caching a data block are provided. The method includes: obtaining, from a terminal, an access request for requesting access to a first data block; determining that the first data block is missed in a cache space of a storage system; detect whether a second data block satisfies a lazy condition, the second data block being a candidate elimination block in the cache space and the lazy condition being a condition for determining whether to delay replacing the second data block from the cache space according to a re-access probability; determining that the second data block satisfies the lazy condition; and accessing the first data block from a storage space of the storage system and skipping replacing the second data block from the cache space.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 14, 2021
    Applicants: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Ke ZHOU, Yu Zhang, Hua Wang, Yong Guang Ji, Bin Cheng
  • Publication number: 20210013066
    Abstract: A laser stripping mass-transfer device includes a microdevice laser stripping transfer module, an auxiliary conveyor module, a transition conveyor module, a transfer conveyor module, a substrate carrier module, a microdevice filling module, a curing module, an encapsulation module and a substrate transportation module. The microdevice laser stripping transfer module is configured to implement detection and stripping of the microdevices. The auxiliary conveyor module is configured to adhere the stripped microdevices. The transition conveyor module is configured to pick up and transfer the microdevices to the transfer conveyor module. The transfer conveyor module is configured to pick up and transfer the microdevices to the substrate carrier module. The substrate carrier module is configured to feed the microdevices into the microdevice filling module, the curing module, the encapsulation module, and the substrate transportation module for filling, curing, encapsulating, loading and unloading.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 14, 2021
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jiankui CHEN, Yiwei JIN, Zhouping Yin, Yongan Huang
  • Patent number: 10883955
    Abstract: A method for preparing a material composition comprising a hollow transition metal oxide nanoparticle supported upon a carbon material support includes a solution impregnation process step, followed by a thermal reduction process step and finally a thermal oxidation process step. The material composition, an electrode and an electrical component such as but not limited to a battery are all predicated at least in-part upon the material composition prepared in accord with the foregoing method. The foregoing material composition, electrode, battery and method may ultimately provide a LIB with enhanced performance.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: January 5, 2021
    Assignees: Cornell University, Huazhong University of Science and Technology
    Inventors: Yingchao Yu, Héctor D. Abruña, Deli Wang, Weidong Zhou, Hongfang Liu, Shuang Qin
  • Publication number: 20200398457
    Abstract: Additive manufacturing (AM) methods and devices for high-melting-point materials are disclosed. In an embodiment, an additive manufacturing method includes the following steps. (S1) Slicing a three-dimensional computer-aided design model of a workpiece into multiple layers according to shape, thickness, and size accuracy requirements, and obtaining data of the multiple layers. (S2) Planning a forming path according to the data of the multiple layers and generating computer numerical control (CNC) codes for forming the multiple layers. (S3) Obtaining a formed part by preheating a substrate, performing a layer-by-layer spraying deposition by a cold spraying method, and heating a spray area to a temperature until the spraying deposition of all sliced layers is completed. (S4) Subjecting the formed part to a surface modification treatment by a laser shock peening method.
    Type: Application
    Filed: June 23, 2020
    Publication date: December 24, 2020
    Applicant: Huazhong University of Science & Technology
    Inventors: Hai'ou Zhang, Xiaoqi HU, Guilan WANG, Cheng YANG
  • Publication number: 20200379276
    Abstract: Disclosed in the present invention are a chalcogenide phase change material based all-optical switch and a manufacturing method therefor, relating to the field of optical communications. The all-optical switch comprises: stacked in sequence, a cover layer film, a chalcogenide phase change material film, an isolation layer film, a silicon photonic crystal, and a substrate. The silicon photonic crystal comprises a nano-porous structure such that the silicon photonic crystal has a Fano resonance effect. When the all-optical switch is used, the state of the chalcogenide phase change material film is controlled by means of laser, and the resonance state of the silicon photonic crystal is modulated to implement modulation of signal light transmissivity; the modulation range is within a communication band from 1500 nm to 1600 nm, thereby implementing an optical switch. The all-optical switch of the present invention has the characteristics of high contrast ratio, high rate and low loss.
    Type: Application
    Filed: June 7, 2018
    Publication date: December 3, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiangshui MIAO, Yitao LU, Hao TONG, Yi WANG
  • Patent number: 10852483
    Abstract: The present disclosure discloses a time division multiplexing closed loop feedback thermal control method and system, and the method is applicable to a system comprising k integrated photonic devices. The method comprises: acquiring, by a temperature control unit, refractive index information of an i-th integrated photonic device in a time division multiplexing manner, refractive indexes of the integrated photonic devices varying with temperature, 1?i?k; and adjusting, by the temperature control unit, a temperature of the i-th integrated photonic device when the refractive index of the i-th integrated photonic device is not equal to a desired value to control the refractive index of the i-th integrated photonic device to be maintained at the desired value. When the integrated chip includes multiple photonic devices, a temperature control unit is shared in a time division multiplexing manner, which reduces the overall power consumption of the system.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 1, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Min Tan, Zhicheng Wang
  • Patent number: 10852221
    Abstract: A magnetic suspension thermobalance based on quick photothermal heating comprises a sealed container, a reaction tank, a magnetic suspension device, a laser displacement monitoring component, a photothermal heating component and a photothermal heating component displacement device. A method comprises following steps: weighing a testing sample and adding same into the reaction tank; putting the reaction tank into the sealed container together with a magnetic suspension float; causing the magnetic suspension float to float in the sealed container; introducing gas into the sealed container; measuring the real-time position of the magnetic suspension float, and causing same to a measurement zero point; heating the reaction tank; maintaining a heating beam on the reaction tank; measuring the temperature of the testing sample in the reaction tank; and recording the displacement of the magnetic suspension float, and converting said displacement into mass.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: December 1, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Song Hu, Hanjian Li, Jun Xiang, Huanying Chi, Gongxiang Song, Tao Liu, Sheng Su, Yi Wang, Kai Xu, Limo He, Jun Xu, Hengda Han
  • Patent number: 10853941
    Abstract: The present invention discloses a registration method and system for a non-rigid multi-modal medical image. The registration method comprises: obtaining local descriptors of a reference image according to Zernike moments of order 0 and repetition 0 and Zernike moments of order 1 and repetition 1 of the reference image; obtaining local descriptors of a floating image according to Zernike moments of order 0 and repetition 0 and Zernike moments of order 1 and repetition 1 of the floating image; and finally obtaining a registration image according to the local descriptors of the reference image and the floating image. In the present, by using self-similarity of the multi-modal medical image and adopting the Zernike moment based local descriptor, the non-rigid multi-modal medical image registration is thus converted into the non-rigid mono-modal medical image registration, thereby greatly improving its accuracy and robustness.
    Type: Grant
    Filed: October 9, 2016
    Date of Patent: December 1, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xuming Zhang, Fei Zhu, Jingke Zhang, Jinxia Ren, Feng Zhao, Guanyu Li, Mingyue Ding
  • Patent number: 10839527
    Abstract: A method of measuring infrared spectral characteristics of a moving target, the method including: establishing a multi-dimensional and multi-scale model with infrared spectral features of an object-space target, and extracting an object-space region of interest measurement model; performing target detection on an actually measured infrared image, and identifying position information for each ROI of a target; tracking the target, to obtain the target's pixel differences between two frames, as well as a moving direction of the target, and performing motion compensation for the target; and scanning the target, and after successfully capturing an image of the target being tracked, controlling an inner framework to point to each target of interest, and according to moving-direction information of the target, performing N-pixel-size motion in a direction shifted by 90° with respect to the moving direction, and activating a spectrum measuring module.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: November 17, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Tianxu Zhang, Hongtao Yu, Shoukui Yao, Xiaobing Dai
  • Patent number: 10821675
    Abstract: The present disclosure belongs to the technical field of advanced manufacturing auxiliary equipment, and discloses an independently temperature-controlled high-temperature selective laser sintering frame structure, comprising a galvanometric laser scanning system, a powder feeding chamber, a forming chamber and a heat-insulating composite plate, and targeted optimization design is performed on the respective functional components.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: November 3, 2020
    Assignee: Huazhong University of Science and Technology
    Inventors: Shifeng Wen, Peng Chen, Chunze Yan, Lei Yang, Zhaoqing Li, Hongzhi Wu, Yusheng Shi
  • Publication number: 20200343799
    Abstract: A magnetically reconfigurable robot joint motor includes a coil stator, a permanent magnet rotor and a magnetic reconfiguration unit. The magnetic reconfiguration unit is arranged around an outer periphery of the permanent magnet rotor, and a coil connected to a control circuit is wound on an outer layer of the magnetic reconfiguration unit. When it is necessary to execute low rotation speed or zero rotation speed operating conditions, the control circuit inputs current pulses of different strengths, so that the magnetic reconfiguration unit obtains permanent magnetization of corresponding degree, and generates a magnetic field which acts together with a magnetic field of the permanent magnet rotor, so as to maintain a torque required for output.
    Type: Application
    Filed: April 28, 2019
    Publication date: October 29, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kun BAI, Lang ZHU, Mi YUAN, Kok-Meng LEE
  • Publication number: 20200342301
    Abstract: Disclosed by the disclosure is a convolutional neural network on-chip learning system based on non-volatile memory, comprising: an input module, a convolutional neural network module, an output module and a weight update module.
    Type: Application
    Filed: July 12, 2019
    Publication date: October 29, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiangshui MIAO, Yi LI, Wenqian PAN
  • Publication number: 20200333188
    Abstract: A material optical transition analysis method and system are provided, the method includes: determining a dielectric function spectrum of a material to be analyzed, calculating a second derivative spectrum of the dielectric function spectrum related to the excitation light energy, and performing the CP fitting analysis on the second derivative spectrum to obtain a CP analysis result diagram of the material; drawing an energy band structure diagram and a PDOS diagram of the material, and drawing an energy difference diagram between CBs and VBs according to the energy band structure diagram of the material; determining spatial positions of CPs and the corresponding CBs and the VBs according to the CP analysis result diagram of the material and the energy difference diagram between the CBs and the VBs; and finally indicating the CBs and the VBs in the energy band structure diagram, and determining the particle types participating in formation of the CPs in the PDOS diagram to complete the material optical transi
    Type: Application
    Filed: July 25, 2019
    Publication date: October 22, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Honggang Gu, Baokun Song, Shiyuan Liu, Mingsheng Fang, Xiuguo Chen, Hao Jiang
  • Publication number: 20200333132
    Abstract: The invention discloses a rapid measurement method for an ultra-thin film optical constant, which includes following steps: S1: using a p-light amplitude reflection coefficient rp and an s-light amplitude reflection coefficient rs of an incident light irradiating to an ultra-thin film to be measured to express an amplitude reflection coefficient ratio ? of the ultra-thin film: ? = r p r s ; S2: performing a second-order Taylor expansion to ? = r p r s at df=0 while taking 2?df/? as a variable to obtain a second-order approximation form; S3: performing merging, simplifying and substituting processing to the second-order approximation form for transforming the same into a one-variable quartic equation; S4: solving the one-variable quartic equation to obtain a plurality of solutions of the optical constant of the ultra-thin film, and obtaining a correct solution through conditional judgment, so as to achieve the rapid measurement for the ultra-thin film optical constant.
    Type: Application
    Filed: July 15, 2019
    Publication date: October 22, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Honggang Gu, Shiyuan Liu, Simin Zhu, Baokun Song, Hao Jiang, Xiuguo Chen
  • Patent number: 10810037
    Abstract: The present invention relates to a hybrid memory system with live page migration for virtual machine, and the system comprises a physical machine installed with a virtual machine and being configured to: build a channel for a shared memory between the virtual machine and a hypervisor; make the hypervisor generate to-be-migrated cold/hot page information and writing write the to-be-migrated cold/hot page information into the shared memory; make the virtual machine read the to-be-migrated cold/hot page information from the shared memory; and make the virtual machine according to the read to-be-migrated cold/hot page information perform a page migration process across heterogeneous memories of the virtual machine without stopping the virtual machine.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: October 20, 2020
    Assignee: Huazhong University of Science and Technology
    Inventors: Haikun Liu, Xiaofei Liao, Hai Jin, Dang Yang
  • Patent number: 10811842
    Abstract: A distributed feedback laser, including: a ridge waveguide; two upper electrodes disposed on two sides of the ridge waveguide, respectively; two lower electrodes disposed on two sides of the upper electrodes, respectively; a substrate; a second waveguide cladding layer; an active layer; and a first waveguide cladding layer. The first waveguide cladding layer is n-doped and includes a conductive layer and a refractive layer disposed on the conductive layer. The refractive index of the refractive layer is greater than the refractive index of the active layer. The ridge waveguide includes a ridge region formed by a middle part of the refractive layer. The ridge region includes a surface provided with Bragg gratings. Two grooves are formed between the ridge waveguide and the upper electrodes. The conductive layer is connected to the upper electrodes. The second waveguide cladding layer includes one or more current restricted areas.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: October 20, 2020
    Assignees: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Qiaoyin Lu, Pengfei Zhang, Weihua Guo
  • Patent number: 10808364
    Abstract: An onsite steel rail laser processing engineering vehicle, including a laser processing power engineering vehicle and a laser processing cart, the laser processing power engineering vehicle is connected to the laser processing cart; the onsite steel rail laser processing engineering vehicle further comprises a transport mechanism disposed on the laser processing power engineering vehicle; through movement and rotation, the transport mechanism transports the laser processing cart into the laser processing power engineering vehicle or transports the laser processing cart out from the laser processing power engineering vehicle and places it on rails.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: October 20, 2020
    Assignees: WUHAN NRD LASER ENGINEERING CO., LTD., HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiaoyan Zeng, Qianwu Hu, Pinghua Guo, Xiaoming Xu, Ming Jiang, Dengzhi Wang, Chongyang Li, Li Meng
  • Patent number: 10801955
    Abstract: A numerical characterization method for the dispersion state of carbon nanotubes based on fractal dimension is invented. In this method, a SEM image of the dispersion state of carbon nanotube is obtained first, and then is binarized by the ImageJ software to extract the boundary of individual carbon nanotubes or carbon nanotubes agglomerates, and thereby calculating the fractal dimension of the processed image with the assistance of the box-count algorithm. The value of fractal dimension represents quantitatively the abundant information contained in the dispersion state of carbon nanotubes, which is capable of realizing the numerical characterization of the dispersion state of carbon nanotubes. The invention quantifies the dispersion state of carbon nanotubes, and provides a powerful strategy for controlling, comparison and prediction of macro-properties of carbon nanotube based composites.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: October 13, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ming Xu, Mengmeng Zhang
  • Patent number: 10796866
    Abstract: A direct current circuit breaker, including: n in number circuit breaker modules connected in series, one energy-absorbing and voltage-limiting module connected in parallel to the n in number circuit breaker modules, and a trigger module. The n in number circuit breaker modules each includes a mechanical switch and a commutation branch circuit which are connected in parallel; each commutation branch circuit includes a charging commutation module and a commutation capacitor which are connected in series; the charging commutation module is configured to charge up the commutation capacitor and produce reverse current to cut off the mechanical switch; the one energy-absorbing and voltage-limiting module is configured to absorb energy stored in inductive elements of power systems after a fault current is cut off, so as to limit voltage and protect the mechanical switch, and n is a positive integer greater than or equal to 1.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: October 6, 2020
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Zhao Yuan, Junjia He, Yuan Pan, Hui Xu, Wenting Zhao, Xiaogen Yin