摘要关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。
存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。
由于单片机具有体积 ...<P><BR>摘要<BR>关于转速表的设计已经有很多可供参考,但大部分都是由机械式或模拟数字电路来实现的。
存在着体积大、精度低、不直观、功耗大、功能少，而且采样时间长，难以测得瞬时转速。
由于具有体积小、控制功能强等特点,故它在控制方面得到了广泛的应用。
我们所要设计的多功能转速控制系统就是以为核心来实现智能化仪表。
它具有功能多,功耗小、直观准确,可显示时间、限速报警系统、打印、瞬间转速等优点。
文中阐述了该类转速表的光电传感器工作原理、结构及转速转换电路的设计。
本设计采用的译码器是MC，它是MOTOROLA公司的高集成度LED显示驱动器，采用动态扫描方式显示驱动4个LED数码管。
它集锁存、译码、驱动、扫描、时钟于一体。
<p class='Qbk630'></p></P><P>关键词：转速表，单片机，驱动器MC </P><P><BR>Abstract<BR>On the rotational speed table design has many available, but mostly by mechanical or simulated digital circuits to achieve. There are large in size, precision low, not visual, electronics large, less functional and sampling time, it is difficult to detect instantaneous rotational speed. As the Micro Controller Unit with both small and control functions such strong characteristics, so it widely in control applications. We want multifunctional rotational speed control system is designed to the Micro Controller Unit as the core to achieve intelligent meters. It is more functional, small electronics, and visual accuracy, showing time, speed warning systems, printing, such as instant rotational speed advantage. The article explained the photoelectric sensors such rotational speed table operating principles, structure and rotational speed switching circuit design. The design is a decoder MC, which is integrated high degree LED Motorola companies that drive, a dynamic scanning driven four LED digital display control. It sets Suocun, decoding, driving, scanning, the clock on integration. 。
