Abstract
Traditional electromechanical meter is analog instrumentation, Generally only shows the speed, speed, fuel, battery voltage, such as tire pressure data. Only to provide the operation of the driver and a small amount of data necessary information, has been far from enough to meet the new technology of modern automobiles, high-speed requirements. Developed countries such as commonly used in today's all-digital display devices car dashboard, the vast majority of car instrumentation stepper motor, and is ready to develop to a higher.
For these reasons,design a vehicle based on CAN bus digital instrumentation system is imminent. I designed this based on the CAN bus system is not only the vehicle dashboard using all digital processing, and in some ways also an increase of the analog part of the original.for example, tachometer, barometer.
I used this system with DSPIC,has double CAN module, improve the stability of the system. At the same time I am in the design of an increase of menu functions, add man-machine interface operability, enriched interesting operation.