Research of Coal-Mine Monitoring and Measurement System Base on CAN Field Bus

The speciality of coal-mine production leads to the hopping growing state of its monitoring system. In this paper the mining monitoring system based on control area network(CAN) is studied,and the transmission trunk line which has the optical self-healing structure is designed,then 3 kinds of the realizing schemes of CAN intelligent nodes and practical circuits of CAN/RS232 gateway are provided.