The Research Of Communication Technology And Bus Analysis System In Computer Monitoring System

This paper is based on communication technologies related to the computer monitoring system.It mainly makes some research and design on the following three parts:communication system on computer monitoring system, communication protocol between computer monitoring system and Self-regulation system,and communication bus analysis system of the computer monitoring system.In this paper,a communication system on computer monitoring system has been designed,which is based on a hardware platform with embedded processor LPC2292 andμC/OS-Ⅱembedded operating system.The communication system set up a data channel,which achieve data exchange between the Modbus protocol and CAN protocol, between smart sensors and station industrial control computer.And then,some analysis has been down about the communication system.Next computer monitoring communication system is used to design three kinds of collector programs:signal's loop current collector program,power switch collector program and frequency-shift collector program.All of the programs had been tested many times in the laboratory,and then the programs have been put into practice already.In this paper,a communication protocol between computer monitoring system and self-regulation drive is designed,and the protocol is based onμC/OS-Ⅱoperating system.A switch collector with this communication protocol is used to collect train station information and sent the information to self-regulation drive.At last,some analysis has been down about the debugging process of the switch collector.Some ideas are taken during the days of installation and commissioning about computer monitoring system,and then I designed a bus analysis system from the angle of both the hardware and software,which is based on the ARM9 processor and WinCE embedded operating system.The bus analysis system can read,analysis,display and save data form CAN & RS485 bus,and it can also sent data to the bus.The paper concludes the main job in the last part,and introduces the improvement rooms in the continued work.