Distribution detection device for orienting rail traffic safety assessment

The invention relates to a distributed detection device for the rail traffic safety evaluation, which adopts a structure of a host computer and a front end computer. The host computer is a PC computer with a common network card; the front end computer adopts a DSP+CPLD structure, and is accessed to a plurality of a wide range of sensors used by the safety evaluation detection through a current- voltage converting circuit, a voltage-frequency converting circuit, a level converting circuit, a voltage adjusting circuit, and the like; and a CPLD expands access channels of the sensors and completes the relative signal processing operation. The front end computer connects with an Internet/ local area network through a network communication controller, and communicates with the host computer by the large volume data way; and the site bus communication is realized among a plurality of front end computers through a CAN communication controller. The device is suitable for large range safety monitoring, and has simple wiring and good expandability.