抑制气体超声波流量计零点漂移的互易性电路设计  

Design of reciprocity circuit restraining zero drift of gas ultrasonic flowmeter

作　　者：郑丹丹[1] 付星熠 杨志斌 

机构地区：[1]天津大学电气与自动化工程学院天津市过程检测与控制重点实验室,天津300072

出　　处：《传感器与微系统》2017年第12期112-113,117,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61671317;61101227);天津市应用基础与前沿技术研究计划资助项目(13JCQNJC03300)

摘　　要：针对气体超声波流量计信号衰减严重、干扰较大的问题,设计了一种适用于气体超声波流量计的互易性收发电路,以消除零点漂移现象提高流量计的测量准确度。换能器配对实验和温度实验表明:互易性测量系统显著改善了流量计的零点漂移问题,并具有良好的测量稳定性。The ultrasonic signal decays severely and can be easily affected by noise during the propagation in gas.Considering these factors,reciprocal electronic circuits for gas ultrasonic flow meter are designed. Two experiments are carried out to test the reciprocal circuits,including transducers paired experiment and temperature test. It is verified that the reciprocal circuits can improve the measurement accuracy and stability for gas ultrasonic flow meter.

关 键 词：气体超声波流量计 互易电路 零点漂移 电路设计 

分 类 号：TH814[机械工程—仪器科学与技术]