The Development Of A Multi-CPU Measurement And Control Device Based On CAN Bus

According to the development of the electronics, communication and the design idea ofthe substation automation system, combining many new theories on measurement andcontrol, the dissertation puts forward a design project of a new multi-CPU measurement andcontrol device. It is designed on function modularization. There is respective processing unitfor man-machine faceplate, DC measurement module, AC measurement module, digital inputmodule and digital output module. According to the needs of the spot, it is flexible andconvenient to set the number of each module. We can choose or modify the property and thecalculating method of the measured item in each module. The communication between thedevice and the outside is achieved by man-machine faceplate, which used two CAN Busesthat are redundancy and do well in dealing with outbreak affair. The man-machine faceplatecommunicated to every functional module by calling in turn, that can display the measureddata, the states of each functional module and modified the set, and have friendlyman-machine interface, convenient operation. This paper also talked over the design methodin anti-jamming of measurement and control device.