Research On Signal Module In The All-Electronic Computer Interlocking System

Although applications of computer interlocking system in the railway station signal control area are popular in China recently, the components to control outdoor equipments in these systems are mainly based on relays with contactors. Therefore, the key of the all-electronic computer interlocking syetem is controlling the field points and signals by microelectronic devices and contacting the other filed equipments by means of non-contactor.The signal module in all-electronic computer interlocking system is the research object in this thesis. In this process of research and realization, by ways of applying chips involving the ARM processor , CAN Bus communication technology , I~2C serial communication protocol , complex programmable logic device , solid state relays with high performence and other microelectronic devices, the following objects are realized.1. To produce a universal train signal module and the module should be of functions of "failure—safety" and anti-interference.2. To bring forward an application layer protocol with CAN communication used in computer interlocking system and some space should be reserved for the future communication content.3. To bring forward a set of methods of output correspondence comparison between the master computer and the slave computer.4. To bring forward a frame of the all-electronic computer interlocking system.5. To bring forward a set of control circuits, design ideas and calculation ways being suit to other all-electronic modules.6. To analyse the measures to ensure the reliability and the security of the all-electronic signal module.