现代电子技术2016，Vol.39Issue(11)：141-143,148,4.DOI:10.16652/j.issn.1004-373x.2016.11.034
一种测量不同温度下液体声速的实验装置
An experimental device for measuring liquid sound velocity at different temperatures
摘要
Abstract
Since the current experimental device for measuring the liquid sound velocity generally uses the slideway move⁃ment device of precision screw rod shaken by the handle to change the distance between the ultrasonic transducers,it has te⁃dious operational process and is prone to generate idle stroke error. The oscilloscope is used to observe the signal,which has complex wired line and troublesome operation,and is easy to make mistakes. The current experimental device only can measure the liquid sound velocity at room temperature. In order to overcome the above disadvantages,an improved experimental device is put forward,which can measure the liquid sound velocity at different temperatures. The linear motor used to change the dis⁃tance between the transducers can avoid the idle stroke error,and has simple operational process. The device can directly mea⁃sure and display the acoustic signal received by the ultrasonic receiving transducer,and then convert the acoustic signal into voltage signal. The device is intuitive and convenient.关键词
声速/超声波换能器/实验装置/直线电机Key words
sound velocity/ultrasonic transducer/experimental device/linear motor分类
信息技术与安全科学引用本文复制引用
田凯,王宁,王照平..一种测量不同温度下液体声速的实验装置[J].现代电子技术,2016,39(11):141-143,148,4.基金项目
郑州市重点实验室建设项目（电子信息技术实验室） （）
