作者：陈晓娟, 周新志
作者单位：四川大学电子信息学院, 四川成都 610064
关键词：超声波; 距离测量; 数据处理; 温度补偿; 误差
摘要：
针对液体、固体物体表面过于光滑,不易测量的状况,采用ATMEL公司生产的单片机AT89S52最小系统设计并实现了一种结构简单检测迅速的超声波测距仪。根据超声波在空气中的传播特性,重点讨论了超声波测距的数据处理方法、装置的硬件实现以及为提高测量精度采用的温度补偿方法。系统由单片机最小系统、温度测量电路、数码管显示电路、超声波发射接收电路、LED显示电路、报警电路组成。通过实验,表明系统测量工作可靠,有良好的测量精度和灵敏度。
Design and realization of ultrasonic range finder
CHEN Xiao-Juan, ZHOU Xin-Zhi
College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
Abstract: For liquid and solid surface was too smooth to measure, ATMEL company's SCM AT89S52 minimum system was designed and implemented as a simple structure and rapid detection of ultrasonic range finder. According to characteristic of ultrasonic spreading in the air, the data disposal method of ultrasonic range finder, the hardware realization of the equipment and the method of temperature compensation used in order to improve the measuring precision had been discussed. The system was made of SCM system, temperature measurement circuit, the digital display circuit, ultrasonic launch reception circuit, LED display circuit, and alarm circuit. Through the measuring of the experiments, it indicates that the system work reliably, and has good measuring precision and sensitivity.
Keywords: Ultrasonic; Distance measure; Data disposal; Temperature compensation; Error
2008, 34(6): 120-122 收稿日期: 2008-6-9;收到修改稿日期: 2008-8-2
基金项目:
作者简介: 陈晓娟(1978-),女,甘肃兰州市人,硕士研究生,专业方向为模式识别与智能控制。
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