摘要
本文介绍一种新型电动电子车速里程表，以及霍尔速度传感器，里程计数脉冲的产生，步进电机的驱动和ＢＬ２１１５集成电路在电动电子车速里程表中的应用。
The paper is mainly concerned with a new design of electronic speedometers with trip mileagerecorder, driven by electricity Hall speed sensor, the mileage counting pulse, the electric stepping motor andBL2115 integrated circuit applied in the speedometer are also to be dealt with.
关键词
汽车
电动
车速里程表
霍尔传感器
electronics, speedometer with mileage recorder, drive, Hall sensor
