纯电动车组合仪表的设计

his paper describes a kind of combination Dashboard of Battery Electric Vehicle which is based on the AT89S52 single-chip system and it can display total mileage of the car, driving the total time, the battery voltage and remaining capacity, motor current, speed and a variety of signals.The system contains two parts--hardware and software. The hardware circuit is consisted of power module, voltage and current sampling module and the corresponding analog signal processing module,driver module, and display module and so on.The paper elaborates the working principle and functions of hardware and the design idea and programming principle of software.The system constitutes a simple and low cost, high accuracy.