The Research of Switch Control Module Based on Distributed Computer Interlocking System

Distributed computer interlocking system moves the trackside execution unit of indoor close to the controlled device,it realizes the distributed control through the security communication module. The article describes overall structure of the system and four-wire switch control modules main functions in all modules as well as the hardware structure introduced. The control circuit of switch and the indication acquisition circuit are mainly analyzed. In order to improve the reliability of system,the module uses the working pattern of dual system hot spare . In this paper,operating principle of dual system hot spare and hot standby switching circuit have been mainly illustrated and described Key words: Switch control module; Fail-safe; Dual module hot spare; Computer interlocking system; Distributed control