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出 处:《华北工学院学报》2001年第2期87-89,共3页Journal of North China Institute of Technology
摘 要:目的 利用超声波进行近距离测试的研究 .方法 根据压电晶体的正逆压电效应 ,发射和接收超声波 ,介绍了换能器的设计结构及收发电路 .结果与结论 超声换能器配以适当的收发电路 ,可以使超声能量的定向传输 ,并按预期目的接收反射波 ,实现超声遥控、测距。Aim: To study the measurement of near distance with ultrasonic technology. Methods: Not only the structural design of ultrasonic transducer that can emit and receive ultrasonic wave by its piezoelectric and innverse-piezoelectric effects, but also the driving circuit of the transducer are ontroduced. Results and conclusion: The transducer, together with the driving circuit, can emit ultrasonic energy directionally and receive the echo as expected, and can be put into use of various testing applications, such as remote control, measurement of distance and safeguarding.
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