Research Of The Measure And Control System Based On Embedded MPU And CAN Bus

The development of information technology whose kernel techniques are computer, communication and networks has promoted the society to the information age. It is necessary to associate management, plan, assignment, process optimization, fault diagnosing with all kinds of field controls to produce new products at the least of resoures, energy consumption and time in corporations. So all computers, in the area of automation control, office, management and market, should be constituted in a network to share the messages and dataes with each other. Ethernet is the LAN which has been applied widely. But it has been applied rarely for meeting to the need of industry. So it is significance in the domain of control to realize the link between Internet and field bus for meeting to the needs of industry.Adopting uniform protocol standard to link the control network based on CAN bus and the Ethernet, this method is the final scheme to realize the integration between the control network and the Ethernet. In this paper, the control network based on CAN bus and the Ethernet have been researched detailedly, to insure the information can be transferred accurately, fleetly and integrality, the design scheme that adopting uniform protocol standard from the understratum equipments to the remote supervise and control system,based on advancing the compatibility of the protocol standard of the information network.This paper has six chapters, in the first three chapters, the development process and the work principle of the embedded system, the embedded operating system, Field bus, CAN bus and the network system have been introduced, and the distributed control network has been summarized. According to the existing technology and the situation of our country, the network integrated scheme, system work principle and constitution with technology have been gived. In the fourth chapter which is the realization of embedded system information network and CAN bus information cortroling network, the developing situation and correlation technology such as tasking management, interrupt and clock etc have been summarized, with the YFARM9-EDU-I embeded testbox, the chip of S3C2410, wich is the kernel of ARM9, the migration and realization of the ^C/OS-II operating system based on S3C2410 mircontroller have been introduced particularly. Then, In the information cortrol network of the CAN bus, various modules of the distributed mesure and control system based on the CAN bus such as CPU cell, power module, human-machined interface module, I/O module, the communication module etc, and the idea of software have been gived. In the fifth chapter, the realization of measure and control system based on CAN bus has been realized. Firstly, the TCP/IP protocol and the realization scheme with the embedded and Internet techniques have been presented, then the debugging of the whole system has been introduced. Lastly, in the sixth chapter, the conclusion, innovation, problem and prospect have been gived.