The Research Of Communication System In Computer Monitoring

Computer monitoring system is an equipment used for monitoring and recording the operation situation of signal-devices. The Electric Department could achieve scientific gist from the equipment to control the operation quality of the devices and analyse the malfunction. It becomes the essential equipment which guarantees traffic safety and monitors operation quality in the railway system. The communication processor mentioned in the thesis is the communication joint of intelligent sensors and station processor in the computer monitoring system.The thesis presents a multi-serial bus communication processor based on the embbeded system. It has four serial bus controllers and extends four-ways RS-485 on the basis. The processor could respectively connect with four kinds of intelligent sensors. In the upper layer, it realizes the Modbus network protocols, collects four kinds of information simultaneously and sends them to the station processor. The thesis has introduced the communication processor in detail on the system function, hardware design, operating system and software design.There are two innovations in the thesis. One is that it combines the traditional railway monitoring system with the rising technology, embedded system, and provides certain reference for the development of embedded systems in the railway industry. The second is that it proposes a communication processor with multi-serial bus which could extend the communication channels of the system, then decreases the equipment complexity and improves the overall performance of the system.