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1、基于单片机的电机转速测量仪设计摘要本文讨论了以 STC89C51 单片机为核心的电机转速测量的硬件设计和软件设计，硬件主要由光电传感器、信号整形、LED 数码管显示几部分组成。详细介绍了利用光电传感器技术在电机转速测量中的实现及应用，以及对电机转速进行测量，并由数码管显示转速。随着汽车及电子技术的发展，转速测量技术也在不断创新，各种转速测量仪在工业得到广泛应用，对电机的转速进行测量极大的提高了自动化程度。关键字： 单片机，光电传感器，信号整形，LED 显示基于单片机的电机转速测量仪设计IDesign of Motor Speed Measurement Instrument Based on
2、MCUAbstractThis article discussed take STC89C51 monolithic integrated circuit as the core electrical machinery tachometric survey hardware design and the software design, the hardware mainly by the photoelectric sensor, the signal shaping, the LED nixietube demonstrated that several parts compose. I
3、ntroduced in detail the use photoelectric sensor technology and applies in electrical machinery tachometric surveys realization, as well as carries on the survey to the electrical machinery rotational speed, and demonstrates the rotational speed by the nixietube. Along with the automobile and electr
4、onic technologys development, the tachometric survey technology unceasingly is also innovating, each kind of rotational speed measuring instrument obtains the widespread application in the industry, carried on the survey enormous enhancement automaticity to electrical machinerys rotational speed.Key
5、words: Monolithic integrated circuit,Photoelectric sensor,Signal shaping,LED demonstrated 基于单片机的电机转速测量仪设计II目录1 绪 论 .11.1 设计题目 .11.2 课题背景 .12 转速测量系统的设计 .22.1 转速测量方法及比较 .22.1.1 测频原理 .22.1.2测周原理 .32.1.3计数器原理 .32.2 测量方案设计 .42.2.1 转速测量原理 .42.2.2 系统原理 .53 硬件电路设计 .63.1 电源模块 .63.1.1 LM2596 开关电压调节器 .63.1.2 单片机和显示供电电路 .73.1.3 电机电源供电电路 .73.2 单片机模块 .83.2.1 复位电路 .83.2.2 晶振电路 .93.2.3 单片机系统 .103.3 显示模块 .133.4 红外模块 .144 软件设计 .164.1 软件设计概述 .164.2 软件设计方案 .164.3 系统主程序 .
