Patents by Inventor Duifang Gu

Duifang Gu 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).

  • TIME SERVICE AND POSITIONING NETWORK SYSTEM FOR UNDERGROUND CHAIN-SHAPED LARGE SPACE IN COAL MINE
    Publication number: 20240089879
    Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.
    Type: Application
    Filed: September 30, 2022
    Publication date: March 14, 2024
    Inventors: Gongbo ZHOU, Chuansheng ZHANG, Fan JIANG, Lianfeng HAN, Shudong WANG, Xin LIU, Duifang GU, Tao WANG, Chuansong WANG, Libing WANG, Niansheng LIU, Fuxing SHI, Dongrun LIU, Lizheng LI, Zhencai ZHU
  • Time service and positioning network system for underground chain-shaped large space in coal mine
    Patent number: 11930463
    Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: March 12, 2024
    Assignees: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHIU KERUI MINING TECHNOLOGY CO., LTD.
    Inventors: Gongbo Zhou, Chuansheng Zhang, Fan Jiang, Lianfeng Han, Shudong Wang, Xin Liu, Duifang Gu, Tao Wang, Chuansong Wang, Libing Wang, Niansheng Liu, Fuxing Shi, Dongrun Liu, Lizheng Li, Zhencai Zhu