Results 11 to 20 of about 31,995 (276)
Gong-kuang zidonghua, 2022 During the underground transmission of wireless signal, the measurement between card reader and marker card fails due to signal strength attenuation and interference.
TANG Lijun, WU Wei, LIU Shisen
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Design of personnel positioning system in coal mine underground based on MEMS sensor
Gong-kuang zidonghua, 2018 For problems of low positioning accuracy and high cost existed in current underground personnel positioning system, a personnel positioning system in coal mine underground based on MEMS sensor was designed.
ZHAO Yue, LAN Ying, QU Xian
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A Wireless Sensor Network Based Personnel Positioning Scheme in Coal Mines with Blind Areas
Sensors, 2010 This paper proposes a novel personnel positioning scheme for a tunnel network with blind areas, which compared with most existing schemes offers both low-cost and high-precision.
Shaobo Geng +5 more
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Gong-kuang zidonghua, 2018 Due to affects of clock synchronization error, clock timing error, multipath effect, not line of sight （NLOS）delay error, electromagnetic disturbance between positioning substation and positioning card, it has large positioning error in the existing ...
SUN Zhexing, WANG Yanwen
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Principle of Underground Personnel Positioning System Based on RSSI and Its Desig
Gong-kuang zidonghua, 2010 The paper proposed a design scheme of underground personnel positioning system based on RSSI, expounded mathematical modeling method of underground tunnel and the basic theory of personnel positioning, and mainly introduced implementation schemes of ...
WU Dan-chen +3 more
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Fusion algorithm of underground personnel positioning based on self-organizing competitive network
Gong-kuang zidonghua, 2016 In view of problem of big positioning error of underground personnel positioning method based on weighted centroid algorithm, a fusion algorithm of underground personnel positioning based on self-organizing competitive network was proposed. The algorithm
ZHANG Jianying, ZHANG Yuehui, ZHOU Liyu
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IEEE Access, 2019 It is important that precise positioning and navigation of underground personnel for intelligent hedging and mine rescue in mine accidents or disasters.
Jinhua Wang +4 more
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Meikuang Anquan, 2022 For the problem that the accuracy of personnel positioning in coal mines is susceptible to the calculation errors of the hardware system and complex roadway conditions, which leads to the problem of inconsistency between the calculation results and the ...
ZHOU Xiang, HAN Yannan, ZHOU Jiaxin
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Underground personnel positioning system based on 5G+UWB and inertial navigation technology
Gong-kuang zidonghuaIn practical applications of coal mine personnel positioning systems, there are problems of insufficient equipment computing power and storage resources.
LI Mingfeng +7 more
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Gong-kuang zidonghua, 2013 Taking construction of personnel positioning system of a Mining Group Company as an example, topology of the system was given, installation and notice in debugging of wellhead inspection card system, installation position requirements of underground ...
MIAO Xue-fu
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