Constructing of wireless emergency communication system for underground coal mine based on WMN technology

2010 ◽  
Vol 16 (4) ◽  
pp. 441-448 ◽  
Author(s):  
Wei Yang ◽  
Yu Zhang ◽  
Yang Liu
Keyword(s):  
Coal Mine ◽  
Communication System ◽  
Emergency Communication ◽  
Underground Coal Mine

scholarly journals An emergency rescue communication system and environmental monitoring subsystem for underground coal mine based on wireless mesh network

2018 ◽  
Vol 14 (10) ◽  
pp. 155014771880593 ◽  
Author(s):  
Haojiang Zhao ◽  
Wei Yang
Keyword(s):  
Environmental Monitoring ◽  
Coal Mine ◽  
Communication System ◽  
Wireless Mesh Network ◽  
Environmental Parameters ◽  
Mesh Network ◽  
Underground Coal Mine ◽  
Emergency Rescue ◽  
Wireless Mesh ◽  
Safety Features

According to the characteristics of the underground coal mine roadway structure and disaster environment, this article proposes an underground emergency rescue communication system based on wireless mesh network and its corresponding environmental monitoring subsystem. We design the structures of the emergency rescue communication system and the wireless mesh nodes. The nodes are designed with intrinsic safety features. The work also develops wireless multi-parameter environmental monitoring terminals, and sets up the software platform for the environmental monitoring subsystem. The developed underground coal mine emergency rescue communication system based on wireless mesh network and environmental monitoring subsystem are tested both on the ground and in a real underground roadway environment. Experimental results from the testing show that the signal strength is -45 dBm on average, and the bandwidth attenuation of each hop is less than 10%, the transmission delay after the 11th hop is only 14 ms. The developed emergency rescue communication system is functionally stable, the environmental monitoring subsystem is capable of performing real-time monitoring of various underground environmental parameters, and achieves high accuracy in monitoring.

Design and Simulation of Wireless Communication System Channel in Coal Mine Based on OFDM Technology

2014 ◽  
Vol 989-994 ◽  
pp. 3823-3826
Author(s):  
Rong Hua Ma
Keyword(s):  
Wireless Communication ◽  
Mobile Communication ◽  
Coal Mine ◽  
Communication System ◽  
Channel Model ◽  
Transmission Rate ◽  
Mobile Communication System ◽  
Underground Coal Mine ◽  
Underground Channel ◽  
Wireless Communication System

The OFDM technology is applied in the mobile communication system of underground coal mine, the wireless communication system channel of underground coal mine is researched. The underground channel model is established, and the simulation is taken for testing the performance of system. The simulation results show that the OFDM technology can be applied in the mobile communication system in underground coal mine, and the transmission rate of the system and the ability of anti-interference are improved.

The Communication System for Power Monitoring in the Underground Coal Mine

2012 ◽  
Vol 4 (21) ◽  
pp. 459-467 ◽  
Author(s):  
Baoquan Jin ◽  
Yonghong Wang ◽  
Qinglin wang
Keyword(s):  
Coal Mine ◽  
Communication System ◽  
Underground Coal Mine ◽  
Power Monitoring

393. Airborne Microbial Ecology in an Underground Coal Mine

2002 ◽  
Author(s):  
C. Rao ◽  
J. Martin ◽  
J. Cocalis
Keyword(s):  
Microbial Ecology ◽  
Coal Mine ◽  
Underground Coal Mine
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