Computer Monitoring System Bus Protocol Analyzer Based On ARM9

This thesis is based on the microcomputer bus communication of monitoring system has been launched. Thesis began to research and design from the three main areas, including CAN bus communication, RS-485 bus communication, network communication.Hardware, software aspects, based on embedded technology, completed a computer monitoring system bus protocol analysis equipment.Firstly, the paper introduces the historical development and status of computer monitoring system, and detailed description of the computer monitoring system bus protocol analysis system structure and the background, along with a brief introduction to the CAN protocol and Modbus protocol related technologies.Secondly, the paper introduces the hardware structure, circuit design and software interface of bus protocol analysis equipment based on ARM9.Hardware design, embedded processor S3C2410A as a central control module, and the CAN Module, RS-485 modules and network modules together constitute the entire bus protocol analysis equipment hardware. Software design, based on WINCE operating system and using EVC++ write bus protocol analysis system software interface. Bus Protocol Analyzer based on the data bus, timely understanding of the working status of equipment, determine lault and so on.Testing and experimental results show the feasibility of the design. ARM9-based Computer Monitoring Bus Protocol Analyzer has excellent reliability, safety, low cost, design flexibility, expandability and so on, has a wide application and development.The paper concludes the main job in the last part, and pointed out the shortcomings and the direction of further work.