传感技术学报2025，Vol.38Issue(3)：451-457,7.DOI:10.3969/j.issn.1004-1699.2025.03.011
基于回波峰值的气体超声流量计频率跟踪方法
Frequency Tracking Method of Ultrasonic Gas Flowmeter Based on Echo Peak Value
徐铖 1赵伟国 1章圣意 2潘旭东1
作者信息
- 1. 中国计量大学计量测试工程学院,浙江 杭州 310018||浙江省流量计量技术研究重点实验室,浙江 杭州 310018
- 2. 浙江苍南仪表集团股份有限公司,浙江 苍南 325800
- 折叠
摘要
Abstract
The complex working environment makes the ultrasonic transducer unable to work in the best state,resulting in weak echo signal and serious attenuation,and the performance of gas ultrasonic flowmeter will be affected.In order to solve this problem,the char-acteristics of impedance and resonance point of ultrasonic transducer are analyzed.A frequency tracking method of ultrasonic transducer based on echo peak value is proposed.According to the relationship between echo peak value and frequency,a mathematical model is established by using frequency characteristic points and the optimal initial frequency is calculated.Then the frequency is tracked by tak-ing the inverse tangent function of the model as the step change factor,and the optimal excitation frequency is finally obtained.The ex-perimental results show that the tracking of the optimal frequency is accurate and fast with the proposed gas ultrasonic flowmeter,and the performance of ultrasonic gas flowmet under complex working conditions is improved.关键词
超声换能器/气体超声流量计/回波峰值/起始频率/变步长Key words
ultrasonic transducer/gas ultrasonic flowmeter/echo peak value/initial frequency/variable step size分类
机械工程引用本文复制引用
徐铖,赵伟国,章圣意,潘旭东..基于回波峰值的气体超声流量计频率跟踪方法[J].传感技术学报,2025,38(3):451-457,7.
