20kHz大距离超声测距仪硬件设计  

Design of system hardware in ultrasonic distance measurement of large distance with 20kHz ultrasonic

作　　者：管彦滨[1] 贺西平[1] 樊安仓[1] 贺龙[1] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2009年第3期47-50,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10874107);陕西省自然科学基金资助项目(2007A07)

摘　　要：应用理论分析和实验测试的方法,研究了以增大超声测量距离为目的的超声测距系统.选用20 kHz的超声换能器,并在提高发射功率、优化匹配电路、提高信号接受灵敏度和滤波性能几个方面进行理论研究和电路设计.结果表明,硬件电路的性能完全满足超声测距系统的需要.The ultrasonic distance measurement system which applied to extend the measure distance is studied with the theory analysis and experiment test.This article adopts an ultrasonic transducer of 20 kHz,studies the theory and designs circuit which enhance transmission power,optimize circuit matching,improve sensitivity of receiving signal.The experiment result shows that the performance of hardware circuit is content with the ultrasonic distance measurement system

关 键 词：超声换能器 功率放大电路 运算放大器 

分 类 号：TB524[理学—物理]