包括单片机控制、电源、传感器、油量报警、油量显示、车速信息、里程信息、LED显示等模块设计和软件的设计。
It consists of MCU control, power, sensor, oil amount warning, oil amount show, LED display and the software design.
详细介绍霍尔速度传感器，里程计数脉冲的产生，步进电机的驱动和BL 2115集成电路在电子式车速里程表中的应用。
The Hall speed transducer, the generation of the mileage pulse, the driving of step motor and the application of integrated circuit of BL2115 in speedometer are introduced in detail.
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