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在煤矿瓦斯监测方面,我国目前采用的仪器有多路自动巡回瓦斯遥测仪,甲烷测定器,光学瓦斯检定器等三种。这几种检测仪器虽然先进,但成本太高,系统安装复杂,瓦斯电流信号还需通过电缆线和电话复通道进行发送和接收。因此,小型煤矿难以采用。目前广泛使用的光学瓦斯检定器,虽然比较简单、实用,但仍潜在着不安全因素,因为瓦斯工对井下各检测点(工作面)只作
In the field of coal mine gas monitoring, there are three kinds of instruments that are currently used in our country, such as automatic multi-channel gas telemeter, methane measuring instrument and optical gas detector. Although these advanced detection instruments, but the cost is too high, the system installation is complicated, the gas current signals need to send and receive through the cable and telephone complex channel. Therefore, it is difficult to adopt small coal mines. Currently widely used optical gas detector, although relatively simple and practical, but there are still potential unsafe factors, because the gas workers on the underground detection points (working face) only