公开(公告)号：US20230224021A1

公开(公告)日：2023-07-13

申请号：US18113258

申请日：2023-02-23

Applicant: China University of Mining and Technology

Inventor： Bowen WANG ,  Yanjing SUN ,  Song LI ,  Xiao YUN ,  Ruirui CHEN ,  Yonggang XU

IPC: H04B7/185 ,  H04W4/90

CPC classification number: H04B7/18504 ,  H04W4/90

Abstract: Disclosed is a relay selection method for unmanned aerial vehicles in post disaster emergency scenarios in underground space, comprising the following steps: collecting a maximum rate, a minimum rate and an average rate of data transmission assisted by a D2D user through an unmanned aerial vehicle (UAV) based on a prediction range of the D2D user for the UAV, and obtaining a first uncertain preference order of the D2D user for the UAV and a second uncertain preference order of the UAV for the D2D user; obtaining a preference strategy of the D2D user for the UAV based on the first uncertain preference order and the second uncertain preference order; and exchanging and matching the UAVs matched by any two D2D users based on the many-to-one bilateral matching model, so as to obtain a stable matching result of bilateral exchange.

公开(公告)号：US20230196586A1

公开(公告)日：2023-06-22

申请号：US18112725

申请日：2023-02-22

Applicant: China University of Mining and Technology

Inventor： Yanjing SUN ,  Xiao YUN ,  Kaiwen DONG ,  Kaili SONG ,  Xiaozhou CHENG

IPC: G06T7/20 ,  G06V10/26 ,  G06V10/44 ,  G06V10/62 ,  G06V10/74 ,  G06V10/80 ,  G06F16/738

CPC classification number: G06T7/20 ,  G06V10/26 ,  G06V10/44 ,  G06V10/62 ,  G06V10/761 ,  G06V10/806 ,  G06F16/738 ,  G06T2207/30241

Abstract: Disclosed is a video personnel re-identification method based on trajectory fusion in a complex underground space; an accurate personnel trajectory prediction may be realized through the Social-GAN model; and a spatio-temporal trajectory fusion model is constructed, and personnel trajectory videos that are not affected by the occlusion are introduced into the re-identification network to solve the problem of false extraction of the apparent visual features caused by the occlusion. In addition, a trajectory fusion MARS_traj data set is constructed, and a number of time frames and space coordinate information are added to the MARS data set.

公开(公告)号：US20240105064A1

公开(公告)日：2024-03-28

申请号：US18124751

申请日：2023-03-22

Applicant: China University of Mining and Technology

Inventor： Song LI ,  Yanjing SUN ,  Bowen WANG ,  Yu ZHOU ,  Xiao YUN ,  Ruirui CHEN ,  Jiaqi LI

IPC: G08G5/00

CPC classification number: G08G5/003 ,  G08G5/0013

Abstract: Disclosed is an unmanned aerial vehicle (UAV)-aided over-the-air computing system based on full-duplex relay and a trajectory and power optimization method thereof. The UAV-aided over-the-air computing system adopts the UAV as a full-duplex relay for data fusing and forwarding. The method of the application aims at minimizing an average mean square error of over-the-air computing, and solves an optimization problem under constraints of sensor transmitting power, information transmission rate, UAV trajectory and denoising factor. For an overall joint optimization problem, each optimization variable is determined one by one by an alternative optimization method according to the high coupling of optimization variables.

公开(公告)号：US20210247343A1

公开(公告)日：2021-08-12

申请号：US17264412

申请日：2020-03-13

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Shaoyi XU ,  Zhencai ZHU ,  Wei LI ,  Yanjing SUN ,  Fangfang XING ,  Hongyu XUE ,  Qiang PENG ,  Feng DONG ,  Guang CHEN

IPC: G01N27/12 ,  G01N21/41 ,  G01N33/24 ,  E21C39/00

Abstract: When the heading machine tunnels, a current generated by a current excitation source enters a coal seam through a movable cutting pick to form a stray current. The stray current collected by a backflow net returns to a negative electrode of a power supply through a transition resistor. When information such as the water content of the coal seam changes, the stray current and a potential difference across the transition resistor also accordingly change, and the coal seam water content information is converted into an electric signal. When the potential difference across the transition resistor is applied to two ends of a piezoelectric ceramic, the piezoelectric ceramic extends or compresses, and the electric signal is converted into a strain signal. A sensing optical fiber converts the strain signal into an optical signal detectable by a photoelectric detector. The optical signal is analyzed to obtain the coal seam water content information.