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国外矿用光纤沼气传感器及其传输系统
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作者 徐建春 《煤炭工程师》 北大核心 1998年第3期47-48,共2页
国外矿用光纤沼气传感器及其传输系统煤科总院重庆分院徐建春气体传感器是煤矿自动化环境监测监控系统的关键部件,它在煤矿生产中得到了广泛的应用,目前常用的沼气传感器主要为热催化式,这在我国尤为明显。80年代初,随着光纤通信... 国外矿用光纤沼气传感器及其传输系统煤科总院重庆分院徐建春气体传感器是煤矿自动化环境监测监控系统的关键部件,它在煤矿生产中得到了广泛的应用,目前常用的沼气传感器主要为热催化式,这在我国尤为明显。80年代初,随着光纤通信技术的飞速发展,光纤传感器的研究也... 展开更多
关键词 矿用 沼气传感器 传输系统 光纤传感器 传感器
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Research on fault mode and diagnosis of methane sensor 被引量:1
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作者 WANG Qi-jun CHENG Jiu-long 《Journal of China University of Mining and Technology》 EI 2008年第3期386-388,共3页
To improve the reliability of coal mine safety monitoring systems we have analyzed the characteristics of a methane sensor, an important component of the monitoring system of production safety in a coal mine and studi... To improve the reliability of coal mine safety monitoring systems we have analyzed the characteristics of a methane sensor, an important component of the monitoring system of production safety in a coal mine and studied the main type and mode of faults when the sensor was used on-line. We introduced a new method based on artificial neural network to detect faults of methane sensors. In addition, using the output information of a single methane sensor, we established a sensor output model of a dynamic non-linear neural network for on-line fault detection. Finally, the fault of the heating wire of the sensor was simulated, indicating that, when the methane sensor had a fault, the predicted output of the neural network clearly deviated from the actual output, exceeding the pre-set threshold and showing that a fault had occurred in the methane sensor. The result shows that the model has good convergence and stability, and is quite capable of meeting the requirements for on-line fault detection of methane sensors. 展开更多
关键词 methane sensor fault characteristics fault diagnosis neural network
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