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学号：

常 州 大 学 毕业设计（论文） （2012届）

题 目 学 生 学 院 专业班级 校内指导教师 专业技术职务 校外指导老师 专业技术职务

二○一二年六月

数码智能电动车仪表的设计

摘 要:

随着电子技术的广泛应用，传统电动车仪表逐渐被微处理器为核心的电子控制数字仪表取代已成为必然趋势。

基于单片机技术可靠性高、便于扩展、控制功能强、实用性好的特点。本设计以单片机作为控制核心，设计了数码智能电动车仪表的各个部分内容，设计了单片机及其外围电路，实现了电动车仪表基本显示功能。系统的硬件部分包括速度显示、电源电压和欠压显示，左右转向以及前大灯照明显示、三档动力转换等八个部分。速度显示由传感器、信号处理和稳压等部分组成。三档动力转换由ADC0809计数器模块实现。刹车时伴随刹车灯的闪现。系统还具有一定的自检功能。该仪表系统有显示功能多，显示直观准确、灵敏度高、使用寿命长、灵巧美观、成本低等优点，接线简单，目前在电动车行业使用比较多。

关键词：单片机;车速测量;数码显示;A/D转换

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The design of digital intelligent electric meter

Abstract:

With the wide application of electronic technology, the traditional electric vehicle instrument gradually by the microprocessor as the core of electronic control instrument to replace has become an inevitable trend.

Single chip technology is based on high reliability, easy expansion, strong control function, practical characteristics. The designs is based on SCM as the control core, design the digital intelligent electric instrument parts, design the SCM and its peripheral circuit, realizes the electric vehicle instrument basic display function. The hardware of the system includes speed, power supply voltage, under-voltage, and the headlights around to lighting, power conversion third gear, such as eight parts. Speed-showing sensors are composed of signal processing, regulators, and other components. Third gear power conversion from ADC0809 counter module to achieve. It’s turning up with the brake lamp's flashing when the brake lights came. The system also has a self-inspection function. The instrument system displays , intuitive display accurate, high sensitivity, long life, smart appearance, and low cost advantages, simple wiring, the electric vehicle industry to use more.

Key words: Single chip microcomputer；Speed measurement；Digital display ；

A/D conversion

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