A communication device for remote failure diagnosis of flameproof switch in pit

The utility model discloses a communication device for remote failure diagnosis of flameproof switch in pit, including main control station, multistage communication module, communication antenna and wiring mouth, main control station is connected with multistage communication module, the communication antenna is connected with multistage communication module, the wiring mouth is connected with flameproof switch at the corresponding levels or external power source, every grade of communication module contains a plurality of zigbee communication module, every zigbee communication module can receive the flameproof switch failure diagnosis information that corresponding next stage zigbee communication module sent, and with this message routing to the last one -level communication module who corresponds, also can be with flameproof switch failure diagnosis message routing to the last one -level communication module who corresponds of the corresponding levels, main control station also contains a zigbee communication module, the initial received signal state that is in of every zigbee communication module. The utility model provides high communication?distance and the communication reliability of main control station with the flameproof switch failure diagnosis of subordinate to and the freedom of flameproof switch mounted position has been improved.