Development of a low-cost cableless geophone and its application in a micro-seismic survey at an abandoned underground coal mine

2015 ◽  
Author(s):  
Kaoshan Dai ◽  
Xiaofeng Li ◽  
Chuan Lu ◽  
Qingyu You ◽  
Zhenhua Huang ◽  
...  
Keyword(s):  
Coal Mine ◽  
Low Cost ◽  
Seismic Survey ◽  
Underground Coal Mine ◽  
Abandoned Underground Coal Mine

Study on Coal Mine Gas Monitoring System Based on Arduino

2014 ◽  
Vol 1073-1076 ◽  
pp. 2173-2176 ◽  
Author(s):  
Hui Chun Gao ◽  
Chao Jun Fan ◽  
Jun Wen Li ◽  
Ming Kun Luo
Keyword(s):  
Monitoring System ◽  
Coal Mine ◽  
Low Cost ◽  
Gas Monitoring ◽  
Underground Coal Mine ◽  
Gas Concentration ◽  
Coal Mine Gas ◽  
Good Market ◽  
Mine Gas ◽  
Sd Card

Aimed at the frequency gas accident of coal mine, we designed a coal mine gas monitoring system based on Arduino microcontroller. The MQ-4 gas sensor was used to collect gas concentration, wireless ZigBee was used to transfer data of gas concentration to PC. The system can display gas concentration real-timely by LCD and use SD card to store the data. The system will send out sound and light alarm when the gas concentration overruns. Industrial tests have been carried out in Wuyang coal mine. Results show that gas monitoring system can well adapt to environment of underground coal mine and the measurement is accurate. The system is real-time monitoring and early warning. It has the characteristics of low power consumption, low cost, wireless, good market prospect.

The GREEN Design of Horizontal Type Transfer Machine for Underground Coal Mine Belt Department

2012 ◽  
Vol 591-593 ◽  
pp. 80-83
Author(s):  
Ping Huai Mao ◽  
Jing Xi Li ◽  
Li Ding
Keyword(s):  
Structural Optimization ◽  
Coal Mine ◽  
Low Cost ◽  
Technical Support ◽  
Continuous Operation ◽  
Compact Structure ◽  
Underground Coal Mine ◽  
Horizontal Type ◽  
Working Principle ◽  
Continuous Loading

The Horizontal Type Transfer Machine for Underground Coal Mine has a simple controlling surface, compact structure and the low cost of making. It also could continuous loading of small underground loader. The paper mainly presents that the design of horizontal type transfer machine for underground coal mine belt department. It points out the structure and working principle of Transfer Machine and that also provide theoretical and technical support for the transfer machine’s continuous operation. This article multi-disciplinary considers the manufacturing technology, structural optimization and the economic running. It also consider of the machine’s reduce, reuse and recycle.

Positioning Algorithm of Underground Personnel Based on ZigBee Technology

2014 ◽  
Vol 532 ◽  
pp. 121-125
Author(s):  
Wei Jiang ◽  
Feng Yang
Keyword(s):  
Coal Mine ◽  
Low Cost ◽  
New Technology ◽  
Low Complexity ◽  
Wireless Technology ◽  
Underground Coal Mine ◽  
Zigbee Technology ◽  
Production Safety ◽  
Accurate Position ◽  
Positioning Algorithm

In recent years, people pay more and more attention to coal production safety. In order to enhance the security of underground work, optimize the coal mine management, and improve the personnel location accuracy, a newly arisen technique based on ZigBee with the low power, low cost and low complexity, which is suitable for being used to implement personnel position in underground coal mine, is built after comparing with several kinds of major wireless technology. In this paper, we present a new algorithm of underground personnel position based on this new technology. The algorithm uses Gaussian filtering algorithm and Bayesian statistics theory. The algorithm has been tested and the result has been analyzed. The experimental results show that the proposed algorithm provides more accurate position than positioning algorithm using RSSI.

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