| 基于AT89C2051的超声波测距系统 |
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| 引用本文： | 高川,谈振藩.基于AT89C2051的超声波测距系统[J].应用科技,2006,33(11):11-14. |
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| 作者姓名： | 高川 谈振藩 |
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| 作者单位： | 哈尔滨工程大学,自动化学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 介绍了利用超声波传感器实现的非接触式距离检测系统．该系统可以用于汽车倒车时的报警、液位和物位的非接触式测量，介绍了超声波传感器原理及系统各单元的设计．系统中采用了AT89C2051型单片机作为主控制器．把一种直流电机PWM调速芯片应用到此系统中，使得控制方法简便，应用范围增强，同时可以利用单片机设定距离值和输出控制信号．最终距离用串行方法在数码管上显示出来，可以直观地查看距离值，以实现测距、显示、输出控制信号的功能．
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| 关 键 词： | 单片机 超声波 测距 |
| 文章编号： | 1009-671X（2006）11-0011-04 |
| 收稿时间： | 2006-06-26 |
| 修稿时间： | 2006年6月26日 |
An ultrasonic distance measurement system based on AT89C2051 microcomputer |
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| GAO Chuan,TAN Zhen-fan.An ultrasonic distance measurement system based on AT89C2051 microcomputer[J].Applied Science and Technology,2006,33(11):11-14. |
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| Authors: | GAO Chuan TAN Zhen-fan |
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| Abstract: | A distance measurement device using ultrasonic sensors is presented which can be used as astern alarm or non-contact measuring device for liquid level and object position. The design of each unit of the system and the principle of ultrasonic sensors has been described in detail. The system utilizes AT89C2051 microcomputer as major controller. ADC motor PWM velocity regulation chip is used in this system, making the control method simpler and application range wider. The distance and output control signal can be set up by MCU. The measured distance can be displayed on LED. Hence, the functions of distance measurement, display, and control signal output have been achieved. |
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| Keywords: | L293 |
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