Subway train smoke alarm and bearing fault diagnosis combined device

The invention discloses a smoke alarm and bearing fault diagnosis combined device for a subway train. The device is composed of a control module, an intelligent guidance module, a data acquisition module, a fire monitoring module, a bearing vibration monitoring module, a carriage state monitoring module, a data processing module, a clock module, an EEPROM module, an LED indicating lamp module and an alarm module. The device is mainly applied to monitoring, acquisition, analysis and diagnosis of train operation state data of a subway train carriage state monitoring system, a train fault diagnosis system and the like. The device is provided with various high-performance sensor processing circuits such as a speed sensor processing circuit, a displacement sensor processing circuit, a temperature sensor processing circuit, a smoke sensor processing circuit, a temperature smoke sensor processing circuit and a micro monitoring camera, data transmission is achieved through a vehicle-mounted Ethernet and RS485 communi