Patents by Inventor Zhonghui Li

Zhonghui Li 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: 11300664
    Abstract: A LiDAR odometry method based on the directed geometric point and sparse frame includes: obtaining original three-dimensional point cloud data of a surrounding environment in the coordinate system of the current frame of the LiDAR sensor; constructing and converting the first directed geometric point set and first environmental directed geometric point set into the second directed geometric point set and second environmental directed geometric point set in the world coordinate system, respectively; calculating candidate associated points in the second environmental directed geometric point set in association with each point in the second directed geometric point set, and determining the best associated point of each point in the second directed geometric point set; constructing and solving a pose optimization function to obtain an optimized pose from the coordinate system of the current frame of the LiDAR sensor to the world coordinate system; and updating directed geometric point sets of sparse frames.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: April 12, 2022
    Assignees: INSTITUTE OF AUTOMATION, CHINESE ACADEMY OF SCIENCES, Beijing EnGo Technology Co., Ltd.
    Inventors: Zhiqiang Cao, Zhonghui Li, Jinli Kang, Min Tan, Shuang Liang, Chengpeng Wang
  • Publication number: 20220074630
    Abstract: The present disclosure relates to the field of air conditioning technology. In particular, it involves a heat pump system and control method.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 10, 2022
    Inventors: Zhicheng HUANG, Zhonghui LI
  • Patent number: 11268377
    Abstract: Disclosed are a measurement-while-drilling method and device for obtaining a coal seam gas parameter applicable to measurement of a coal seam gas/coal seam methane parameter while drilling and evaluation of gas drainage performance. The invention performs a measurement-while-drilling operation to obtain information about downhole gas and a coal seam, thereby realizing on-site measurement of a coal seam gas parameter while drilling. The measurement-while-drilling device for obtaining a coal seam gas parameter comprises a compartment (17), a pressure sensor (15), a temperature sensor (14), a flow sensor (4), an acoustic emission sensor (16), a monitoring and control module (11), a power module and a communication module. The device is installed between a drill bit (1) and a first drill pipe (20).
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 8, 2022
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Enyuan Wang, Zhonghui Li, Jianchun Ou, Liming Qiu
  • Patent number: 11174722
    Abstract: The present invention provides an inversion calculation method of coal-bed gas parameters of fast test while-drilling. The technical solution is that an inversion calculation method of coal-bed gas parameters of fast test while-drilling includes: during drilling in a coal bed, testing a gas flow and a gas concentration of an orifice in real time while-drilling, calculating drilling gas discharge amounts of the orifice, inversely calculating a coal-bed gas pressure at a drill bit based on borehole and coal-bed permeability parameters, and calculating a coal-bed gas content according to a gas content and gas pressure relational expression. The present invention has the beneficial effects that the present invention does not occupy the drilling and drill rod replacement time, is accurate, convenient, real-time and fast, and can test and calculate the coal-bed gas parameters of each section along the whole borehole length.
    Type: Grant
    Filed: October 12, 2019
    Date of Patent: November 16, 2021
    Assignees: China University of Mining and Technology, XUZHOU FUAN TECHNOLOGY CO., LTD.
    Inventors: Enyuan Wang, Hao Wang, Jianchun Ou, Rongxi Shen, Xiyuan Wang, Baolin Li, Zhonghui Li, Xiaofei Liu
  • Publication number: 20210333014
    Abstract: The present disclosure relates to the field of air conditioning technology. In particular, it involves an air control method for air handler unit.
    Type: Application
    Filed: July 15, 2019
    Publication date: October 28, 2021
    Inventors: Zhicheng HUANG, Zhonghui LI
  • Publication number: 20210333028
    Abstract: The present disclosure relates to the field of air conditioning technology. In particular, it involves a refrigerant charging method for variable speed compressor based ac system.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 28, 2021
    Inventors: Zhicheng Huang, Zhonghui LI
  • Publication number: 20210262341
    Abstract: The present invention provides an inversion calculation method of coal-bed gas parameters of fast test while-drilling. The technical solution is that an inversion calculation method of coal-bed gas parameters of fast test while-drilling includes: during drilling in a coal bed, testing a gas flow and a gas concentration of an orifice in real time while-drilling, calculating drilling gas discharge amounts of the orifice, inversely calculating a coal-bed gas pressure at a drill bit based on borehole and coal-bed permeability parameters, and calculating a coal-bed gas content according to a gas content and gas pressure relational expression. The present invention has the beneficial effects that the present invention does not occupy the drilling and drill rod replacement time, is accurate, convenient, real-time and fast, and can test and calculate the coal-bed gas parameters of each section along the whole borehole length.
    Type: Application
    Filed: October 12, 2019
    Publication date: August 26, 2021
    Applicants: China University of Mining and Technology, XUZHOU FUAN TECHNOLOGY CO., LTD.
    Inventors: Enyuan WANG, Hao WANG, Jianchun OU, Rongxi SHEN, Xiyuan WANG, Baolin LI, Zhonghui LI, Xiaofei LIU
  • Patent number: 10947842
    Abstract: A measurement-while-drilling method and device assesses outburst risk and evaluates gas drainage performance of a coal seam. The device includes a compartment, a pressure sensor, a temperature sensor, a flow sensor, an electromagnetic sensor, an acoustic sensor, a wave velocity measurement module, a monitoring and control module, a power supply and a communication interface. These are installed between a drill bit and an inclinometer or a first drill pipe. Measurements are performed while drilling to obtain a real time gas parameter, lithologic and coal seam information, for on-site assessment of outburst risk. During drill bit replacement, gas pressure, temperature, flow velocity, wave velocity, electromagnetic radiation, and an acoustic signal are recorded in real time, to calculate stress of the coal seam and coal seam outburst risk. On-site measurement is done while drilling without sampling and can use multiple parameters to perform synchronous measurement to obtain a comprehensive evaluation.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 16, 2021
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Enyuan Wang, Zhonghui Li, Jianchun Ou, Liming Qiu
  • Publication number: 20200200004
    Abstract: A measurement-while-drilling method and device assesses outburst risk and evaluates gas drainage performance of a coal seam. The device includes a compartment, a pressure sensor, a temperature sensor, a flow sensor, an electromagnetic sensor, an acoustic sensor, a wave velocity measurement module, a monitoring and control module, a power supply and a communication interface. These are installed between a drill bit and an inclinometer or a first drill pipe. Measurements are performed while drilling to obtain a real time gas parameter, lithologic and coal seam information, for on-site assessment of outburst risk. During drill bit replacement, gas pressure, temperature, flow velocity, wave velocity, electromagnetic radiation, and an acoustic signal are recorded in real time, to calculate stress of the coal seam and coal seam outburst risk. On-site measurement is done while drilling without sampling and can use multiple parameters to perform synchronous measurement to obtain a comprehensive evaluation.
    Type: Application
    Filed: November 27, 2017
    Publication date: June 25, 2020
    Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Enyuan WANG, Zhonghui LI, Jianchun OU, Liming QIU
  • Publication number: 20200116016
    Abstract: Disclosed are a measurement-while-drilling method and device for obtaining a coal seam gas parameter applicable to measurement of a coal seam gas/coal seam methane parameter while drilling and evaluation of gas drainage performance. The invention performs a measurement-while-drilling operation to obtain information about downhole gas and a coal seam, thereby realizing on-site measurement of a coal seam gas parameter while drilling. The measurement-while-drilling device for obtaining a coal seam gas parameter comprises a compartment (17), a pressure sensor (15), a temperature sensor (14), a flow sensor (4), an acoustic emission sensor (16), a monitoring and control module (11), a power module and a communication module. The device is installed between a drill bit (1) and a first drill pipe (20).
    Type: Application
    Filed: November 27, 2017
    Publication date: April 16, 2020
    Inventors: Enyuan WANG, Zhonghui LI, Jianchun OU, Liming QIU
  • Publication number: 20160131669
    Abstract: The present invention provides a biochip for simultaneously detecting a variety of antibiotics, illegal additives and biotoxins in a visualized manner, wherein the biochip comprises a chip carrier fixed with a group of detection target antigens, the detection targets are the antibiotics, the illegal additives and the biotoxins, and the biochip is prepared by the following method: enabling the bovine serum albumin and the detection target antigens to perform sample application operation on the chip carrier through a biochip preparation system by taking bovine serum albumin as blank control, and then fixing in a water bath at 20-37° C. for 0.5-4 h for preparation. The invention further provides a method for simultaneously detecting a variety of antibiotics, illegal additives and biotoxins by using the biochip.
    Type: Application
    Filed: May 30, 2014
    Publication date: May 12, 2016
    Inventors: Zhonghui Li, Zhoumin Li, Siyun Sun