Patents by Inventor Xiaopeng Chen

Xiaopeng Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11927608
    Abstract: The present disclosure relates to an AC/DC closed-loop current sensor, including a magnetism gathering iron core, a TMR chip, a signal processing circuit, a signal generator, and a feedback coil. The TMR chip is arranged at an air gap of the magnetism gathering iron core and connected to the signal processing circuit. The signal processing circuit is connected to the signal generator. The feedback coil is wound around the magnetism gathering iron core and connected to the signal generator. The signal processing circuit is configured to select from the induced signal of the TMR chip and make an amplification to obtain a current signal component and send the current signal component to the signal generator. The signal generator is configured to adjust a current output to the feedback coil based on the current signal component, and output a measurement result of the selected current signal component.
    Type: Grant
    Filed: September 18, 2023
    Date of Patent: March 12, 2024
    Assignee: DIGITAL GRID RES. INST., CHINA SOUTHERN PWR. GRID
    Inventors: Peng Li, Qiancheng Lv, Bing Tian, Xiaopeng Fan, Zhong Liu, Zhiming Wang, Renze Chen, Jie Wei, Xu Yin, Zejie Tan, Zhenheng Xu, Senjing Yao, Licheng Li, Yuehuan Lin, Shengrong Liu, Bofeng Luo, Jiaming Zhang
  • Patent number: 11840655
    Abstract: The present disclosure provides a yellow-red spectral quantum dot, a synthesis method therefor and application thereof. The yellow-red spectral quantum dot has an alloyed structure of CdSe@CdZnSe/CdZnS or an alloyed structure of CdSe@CdZnSe/CdZnS/ZnS, the ZnS shell being one or more monolayers, and the fluorescence emission peak wavelength of the yellow-red spectral quantum dot being between 580 nm and 640 nm.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: December 12, 2023
    Assignee: Najing Technology Corporation Limited
    Inventors: Xiaopeng Chen, Lei Shao, Yangla Xie
  • Patent number: 11614719
    Abstract: The present application discloses a wide-field-of-view anti-shake high-dynamic bionic eye. A trajectory tracking method based on a bionic eye robot includes: establishing a linear model according to a bionic eye robot; establishing a full state feedback control system on the basis of the linear model; in the full state feedback control system, acquiring an angle and an angular acceleration required for a joint in a target tracking process of the bionic eye on the basis of a preset trajectory expectation value and a preset joint angle expectation value; the method further includes: adopting a linear quadratic regulator (LQR) to calculate a parameter K in the full state feedback control system, and minimizing energy consumption by establishing an energy function, so as to optimize the coordinated head-eye motion control of the linear bionic eye. The present application achieves the optimal control of the target tracking.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: March 28, 2023
    Assignee: Beijing Institute of Technology
    Inventors: Qiang Huang, Xiaopeng Chen, Yang Xu, Zhangguo Yu, Xuechao Chen, Weimin Zhang
  • Patent number: 11465249
    Abstract: A self-centering device for a liner press-fit wheel may improve center alignment when liners are pressed in bolt holes of the wheel, may reduce rejects generated when bolt hole materials are pressed out by alignment failures, and may improve a press-fit yield.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: October 11, 2022
    Assignee: CITIC DICASTAL CO., LTD.
    Inventors: Jun Wang, Xiao Liu, Xiaopeng Chen, Xingming Zhang, Zuo Xu, Hanqi Wu
  • Publication number: 20220293877
    Abstract: The disclosure provides a core-shell quantum dots preparing method, core-shell quantum dots and a quantum dot electroluminescent device including the core-shell quantum dots. The method includes preparing a solution containing alloy quantum dot cores, purifying the alloy quantum dot cores; heating a mixture of a cation precursor of the shell, a carboxylic acid, the alloy quantum dot cores and a solvent for a certain period of time, after it, the carboxylic acid presents in the mixture being free carboxylic acid; adding an fatty amine and an anion precursor of the shell into the mixture to coat the alloy quantum dot cores to obtain the core-shell quantum dot. The surface of the core-shell quantum dots includes a fatty amine ligand, which amounts for at least 80% of all the ligands on the surface of the core-shell quantum dots, and the core-shell quantum dots are high in luminescence efficiency and stability.
    Type: Application
    Filed: August 1, 2019
    Publication date: September 15, 2022
    Inventors: Xiaopeng CHEN, Haiyang ZHAO, Yangla XIE
  • Publication number: 20220258337
    Abstract: The present application discloses a wide-field-of-view anti-shake high-dynamic bionic eye. A trajectory tracking method based on a bionic eye robot includes: establishing a linear model according to a bionic eye robot; establishing a full state feedback control system on the basis of the linear model; in the full state feedback control system, acquiring an angle and an angular acceleration required for a joint in a target tracking process of the bionic eye on the basis of a preset trajectory expectation value and a preset joint angle expectation value; the method further includes: adopting a linear quadratic regulator (LQR) to calculate a parameter K in the full state feedback control system, and minimizing energy consumption by establishing an energy function, so as to optimize the coordinated head-eye motion control of the linear bionic eye. The present application achieves the optimal control of the target tracking.
    Type: Application
    Filed: January 14, 2020
    Publication date: August 18, 2022
    Inventors: Qiang HUANG, Xiaopeng CHEN, Yang XU, Zhangguo YU, Xuechao CHEN, Weimin ZHANG
  • Publication number: 20220168854
    Abstract: A self-centering device for a liner press-fit wheel may improve center alignment when liners are pressed in bolt holes of the wheel, may reduce rejects generated when bolt hole materials are pressed out by alignment failures, and may improve a press-fit yield.
    Type: Application
    Filed: July 28, 2021
    Publication date: June 2, 2022
    Inventors: Jun Wang, Xiao Liu, Xiaopeng Chen, Xingming Zhang, Zuo Xu, Hanqi Wu
  • Patent number: 11298797
    Abstract: A wheel fixture is disclosed. A main shaft drives a first positioning pull rod on a chuck body to extend and contract in the radial direction via a tightening screw, a clamping jaw is at a position within the travel range of extension and contraction, a wheel is positioned and clamped by the fixture, airtight support blocks are pressed down by the wheel and flush with the support plane of the clamping jaw, at this time, airtight ejector rods press second O rings to prevent air from flowing out of the airtight detection position, a detection system of a machine tool detects a preset air pressure value which indicate that the wheel has been placed correctly, and if the wheel is not placed correctly on the fixture, the machine tool will alarm through the detected pressure feedback.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: April 12, 2022
    Assignee: CITIC Dicastal CO., LTD.
    Inventors: Xiao Liu, Zuo Xu, Jiandong Guo, Xiaopeng Chen
  • Patent number: 11219915
    Abstract: A positioning clamp for spray-coating of a wheel trim ring includes a lower base plate, a circular bracket, an upper base plate, a plurality of guide rods, a plurality of sliding support parts and a distance adjusting mechanism. The distance adjusting mechanism is configured to drive the plurality of sliding support parts to approach a central position along the guide rods and to move away from the central position along the guide rods. According to the positioning clamp for spray-coating of the wheel trim ring, the position of each sliding support part can be adjusted to adapt to wheel trim rings of different sizes. Therefore, the positioning clamp for spray-coating of the wheel trim ring can replace a large number of positioning clamps of different sizes, and has the advantages of being simple in structure, stable and reliable in positioning, low in manufacturing cost and the like.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: January 11, 2022
    Assignee: CITIC DICASTAL CO., LTD.
    Inventors: Zuo Xu, Xiao Liu, Yudong Li, Xiaopeng Chen
  • Patent number: 11182644
    Abstract: The present application provides a method and apparatus for pose planar constraining on the basis of planar feature extraction, wherein the method includes: inputting the acquired RGB color image and point cloud image into spatial transformation network to obtain two-dimensional and three-dimensional affine transformation matrixes; extracting the planar features of the transformed two-dimensional affine transformation matrix and three-dimensional affine transformation matrix; inputting the acquired planar features into the decoder and obtain the pixel classification of the planar features; clustering the vectors corresponding to the planar pixels to obtain the segmentation result of the planar sample; using planar fitted by the segmentation result to make planar constraint to the pose calculated by vision algorithm.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: November 23, 2021
    Assignee: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Xiaopeng Chen, Qiang Huang, Siyuan Gou, Zhangguo Yu, Xuechao Chen, Junyao Gao, Yang Xu
  • Publication number: 20210192271
    Abstract: The present application provides a method and apparatus for pose planar constraining on the basis of planar feature extraction, wherein the method includes: inputting the acquired RGB color image and point cloud image into spatial transformation network to obtain two-dimensional and three-dimensional affine transformation matrixes; extracting the planar features of the transformed two-dimensional affine transformation matrix and three-dimensional affine transformation matrix; inputting the acquired planar features into the decoder and obtain the pixel classification of the planar features; clustering the vectors corresponding to the planar pixels to obtain the segmentation result of the planar sample; using planar fitted by the segmentation result to make planar constraint to the pose calculated by vision algorithm.
    Type: Application
    Filed: December 23, 2019
    Publication date: June 24, 2021
    Inventors: Qiang Huang, Xiaopeng Chen, Wei Cheng, Zhangguo Yu, Xuechao Chen, Junyao Gao, Yang Xu
  • Patent number: 11037035
    Abstract: The application discloses a multi-task learning incorporating dependencies method for bionic eye's face attribute recognition, which is as follows: Determine the first face attribute and the second face attribute for attribute recognition of facial image. Obtain the first recognition task branch and the second recognition task branch. Establish the task dependency between the first recognition task branch and the second recognition task branch to obtain the first transformed face attribute fully connected layer related to the second face attribute. and the second transformed face attribute fully connected layer related to the first face attribute. Feed the first transformed face attribute fully connected layer into the prediction layer to predict the first face attribute of facial image. And feed the second transformed face attribute fully connected layer into the prediction layer to predict the second face attribute of facial image.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: June 15, 2021
    Assignee: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Qiang Huang, Xiaopeng Chen, Di Fan, Hyunwoo Kim, Xuechao Chen
  • Publication number: 20210095206
    Abstract: The present disclosure provides a yellow-red spectral quantum dot, a synthesis method therefor and application thereof. The yellow-red spectral quantum dot has an alloyed structure of CdSe@CdZnSe/CdZnS or an alloyed structure of CdSe@CdZnSe/CdZnS/ZnS, the ZnS shell being one or more monolayers, and the fluorescence emission peak wavelength of the yellow-red spectral quantum dot being between 580 nm and 640 nm.
    Type: Application
    Filed: April 22, 2019
    Publication date: April 1, 2021
    Inventors: Xiaopeng CHEN, Lei SHAO, Yangla XIE
  • Patent number: 10922522
    Abstract: A finger vein recognition system includes an IR camera, a handle with a sensor and a IR LED array, and a microprocessor for controlling the LED array and processing image signals received from the camera. The luminescence of each LED in the LED array can be changed based on the position of a user's fingers and the environment, which improves the quality of images captured by the IR camera. The sensor detects the proximity of a user and activates the system.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: February 16, 2021
    Assignee: NXP USA, Inc.
    Inventors: Yuyun Hu, Xiaopeng Chen, Kai Zhu
  • Publication number: 20200387762
    Abstract: The application discloses a multi-task learning incorporating dependencies method for bionic eye's face attribute recognition, which is as follows: Determine the first face attribute and the second face attribute for attribute recognition of facial image. Obtain the first recognition task branch and the second recognition task branch. Establish the task dependency between the first recognition task branch and the second recognition task branch to obtain the first transformed face attribute fully connected layer related to the second face attribute. and the second transformed face attribute fully connected layer related to the first face attribute. Feed the first transformed face attribute fully connected layer into the prediction layer to predict the first face attribute of facial image. And feed the second transformed face attribute fully connected layer into the prediction layer to predict the second face attribute of facial image.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 10, 2020
    Inventors: Qiang Huang, Hyunwoo Kim, Di Fan, Xiaopeng Chen, Xuechao Chen
  • Publication number: 20200311370
    Abstract: A finger vein recognition system includes an IR camera, a handle with a sensor and a IR LED array, and a microprocessor for controlling the LED array and processing image signals received from the camera. The luminescence of each LED in the LED array can be changed based on the position of a user's fingers and the environment, which improves the quality of images captured by the IR camera. The sensor detects the proximity of a user and activates the system.
    Type: Application
    Filed: June 11, 2019
    Publication date: October 1, 2020
    Inventors: YUYUN HU, Xiaopeng Chen, Kai Zhu
  • Publication number: 20200222932
    Abstract: A positioning clamp for spray-coating of a wheel trim ring includes a lower base plate, a circular bracket, an upper base plate, a plurality of guide rods, a plurality of sliding support parts and a distance adjusting mechanism. The distance adjusting mechanism is configured to drive the plurality of sliding support parts to approach a central position along the guide rods and to move away from the central position along the guide rods. According to the positioning clamp for spray-coating of the wheel trim ring, the position of each sliding support part can be adjusted to adapt to wheel trim rings of different sizes. Therefore, the positioning clamp for spray-coating of the wheel trim ring can replace a large number of positioning clamps of different sizes, and has the advantages of being simple in structure, stable and reliable in positioning, low in manufacturing cost and the like.
    Type: Application
    Filed: October 8, 2019
    Publication date: July 16, 2020
    Inventors: Xiao Liu, Yudong Li, Xiaopeng Chen
  • Patent number: 10596671
    Abstract: A milling fixture for forged wheel includes a connecting plate installed on a milling machine table, a linear bearing installed on the connecting plate, a small diameter end of a positioning rod penetrates through a spring and a linear bearing, and a limiting screw installed on a side wall of the linear bearing and connected with the positioning rod. Under the coaction of the spring and an external force, the positioning rod is configured to move in the linear bearing. Bidirectional threaded rods are uniformly installed on a bottom plate, one end of each of the bidirectional threaded rods penetrate through pressure claws, the pressure claws are sandwiched between compression nuts and the connecting plate. The fixture can meet the requirement for milling a forged wheel, and at the same time, has the characteristics of a simple structure, is convenient to manufacture, provides stable performance and is low cost.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: March 24, 2020
    Assignee: CITIC DICASTAL CO., LTD
    Inventors: Weidong Liu, Dan Yao, Xiaopeng Chen, Xing Wang, Haiping Chang
  • Patent number: 10513004
    Abstract: A wheel corner polishing device includes a station switching system, a valve hole polishing system, a bolt hole polishing system and a rim and cap section synchronous polishing system. The wheel corner polishing device can automatically polish four positions including bolt hole corners, a valve hole corner, outer rim corners and cap section corners of a wheel via upper and lower stations and coordination of the systems.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: December 24, 2019
    Assignee: CITIC Dicastal CO., LTD.
    Inventors: Huiying Liu, Lijie Hu, Xiaopeng Chen, Zenglei He, Yongwang Zhao
  • Patent number: 10493593
    Abstract: A wheel outer rim fillet dressing device, wherein after a wheel is roughly positioned, an electric cylinder drives a moving plate to descend to an appropriate position, an adjusting cylinder drives a second sliding table to move away from a first sliding table, the first sliding table moves synchronously with the second sliding table under the action of a second gear rack, thus the distance between a precision positioning post on the first sliding table and a precision positioning post on the second sliding table is adjusted, and the precision positioning posts contact a vertical surface of a cap seam allowance of the wheel and hold the wheel tightly. The adjusting cylinder is restarted, and the outer rim fillets can be dressed when the distance between first and second cutters for dressing wheel outer rim fillets is adjusted to an appropriate position and under the cooperation of the rotating wheel.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: December 3, 2019
    Assignee: CITIC DICASTAL CO., LTD.
    Inventors: Huiying Liu, Shan Ma, Yule Zhou, Junmeng Li, Xiaopeng Chen, Yongwang Zhao