目前摩托车上普遍使用的机械式速度表,存在着结构复杂、安装麻烦、容易损坏等缺点。前不久笔者为一辆重庆雅马哈摩托车设计制作了一只数字式电子速度表,其安装简单,直观醒目,经试用效果不错。现将这种电子速度表介绍给大家。 电路原理:摩托车电子速度表电路原理如图1所示。整个电路由速度脉冲检测电路、计数译码显示器和时基闸门发生器三部分组成。 At present, the commonly used mechanical speedometer on motorcycles has the disadvantages of complicated structure, complicated installation and easy damage. Not long ago, I designed and manufactured a digital electronic speedometer for a Chongqing Yamaha motorcycle. The installation is simple and intuitive, and the trial results are good. Now this electronic speedometer introduced to everyone. Circuit theory: motorcycle electronic speedometer circuit shown in Figure 1. The entire circuit consists of speed pulse detection circuit, counter decoding display and time-base gate generator consists of three parts.