Hybrid Cars Energy Consumption Evaluation System Design

As the energy crisis and environmental pollution problems caused by more and more people's attention, as the replacement of traditional vehicle hybrid car has entered our life. Hybrid electric vehicle is driven by engine and electrical power. As the road situation is various, how to optimize the configuration of engine and electric motor to achieve the purpose of energy-saving is an important issue.On the other hand, each person's driving habit is different. So the same car under the same conditions the consumption of oil is different. It will need to find a way to check energy flow and to remind drivers choose the right way to drive.By monitoring the running state of the hybrid vehicles, this design analysis the actual energy that the vehicles need; by detecting the energy of electric motor and fuel, this design gets the fact energy provided. Then, to get the efficiency by comparing the two values, the evaluation of the vehicles energy consuming situation is given.The subject is designed by the microprocessor core processor 9S12DG128B, combined with MA7260 of accelerometer. It used LCD to display the speed, the acceleration and the realtime fuel consumption. It can provide a basis for the vehicle manufactory to work out the energy assigns tactics; on the other hand can provide reference for the drivers.In addition, the system has SPI, I~2C and the can bus interface, which make it easy to extend and communicate with other electronic control system.