Application of Controller Area Network
in the Computer Interlocking System
Abstract: Nowadays the 6502 electric centralization and the computer interlocking system with actuator of relays are widely applied in the railway signal control system. On the contrast the full electronic computer interlocking system starts later and the new type of railway station interlocking system, which is based on fully electronic and intelligent control device and linked by field bus technology, becomes the process direction of development for the future.
The research object of this project is the electronic computer-based interlocking system of LDJLZ—Ⅱtype ,which is developed Lanzhou Dacheng Automatic Control System Co, the application of CAN bus in complete electronic computer-based interlocking system is discussed. First, it analyses all-around design of the electronic computer-based interlocking system and each module, then from introducing CAN bus, it lucubrates design of the censorial module’s software and hardware which is based on CAN bus of signal lamp’s stimulant state, then the hardware’s circuit of the entire system’s censorial module is made up of opsonic circuit, collecting circuit, microcontrolled circuit,
circuit of communication, interrupt circuit of overcurrenting and reset circuit. The software’s design is made up of the four parts which is blocking collocate, module of CAN communication, collecting module of analog and module of data processing.
Key words: computer interlocking, full-electronic, CAN bus
