摘要
本文设计了一套适用于不同温度、压力及不同介质条件下的超声波声速测量系统,该系统的声速测量采用游标卡尺鉴相法,该方法的测量精度较高,可以达到0.000589rad。通过对零相位情况下的电路的测试结果分析,该测量方法方便可行,能达到设计要求。该超声波声速测量系统进行超声波声速特性的研究,能够得到不同介质、温度和压力下的超声波声速的补偿方法,并为超声波技术在流量计量测试领域的进一步发展提供借鉴。
One kind of measuring system for ultrasonic velocity is presented. This system can study the ultrasonic velocity characteristics under different temperatures, pressures and mediums. The measurement of velocity in the system use the method of vernier caliper phase meter, and the measuring accuracy of phase is relatively high and can reach to 0.000589 rad, In our system, the maximum length of the testing pipe is 1.04 m. After the system was tested under the basic circumstance, we conclude that this method is convenient and feasible and the system can meet the prospective requirements. We can obtain the ultrasonic velocity compensation method under different mediums, temperatures and pressures by perform on experiments in our system. It is valuable for the development of the ultrasonic measuring field.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2014年第S2期163-166,共4页
Chinese Journal of Scientific Instrument
基金
重庆市重点项目(csts2013yykf C00001)资助
关键词
超声波
声速测量系统
游标卡尺鉴相法
ultrasonic velocity characteristics
velocity measurement system
vernier caliper phase meter.