现有的矿井安全监测监控系统是灾前预警系统，监测对象主要是环境安全参数、生产过程及生产工艺，不能实现井下人员的定位。

However, these existing systems cannot get positions of miners, which is one of the reasons for the frequent mine disasters and the low rescuing efficiency.

youdao

现有的矿井安全监测监控系统是灾前预警系统，监测对象主要是环境安全参数、生产过程及生产工艺，不能实现井下人员的定位。

However, these existing systems cannot get positions of miners, which is one of the reasons for the frequent mine disasters and the low rescuing efficiency.

youdao