计量学报2025，Vol.46Issue(11)：1598-1605,8.DOI:10.3969/j.issn.1000-1158.2025.11.07
基于回波波形积分的气体超声流量计信号处理方法
Signal Processing Method for Gas Ultrasonic Flowmeter Based on Echo Waveform Integration
CHEN Jie 1YANG Haonan 1LI Bin1
作者信息
- 1. School of Mechanical and Electrical Engineering and Automation,Shanghai University,Shanghai 200444,China
- 折叠
摘要
Abstract
To address the challenge of identifying stable measurement feature points in the signal processing of gas ultrasonic flow meters,a signal processing method based on echo waveform integration was developed and validated through model derivation and real flow verification.This method utilized each sampling point in the upper half-cycle of the echo waveform to determine the energy of the echo waveform.By calculating the cumulative energy of the sampling points,the two sampling points closest to the threshold were identified,and the characteristic points were determined.This allowed for the calculation of the ultrasonic transit time and the gas flow rate.The signal processing method was implemented in real-time on a dual-core system based on STM32,and calibration experiments were conducted at nationally recognized testing institutions.The results demonstrated that the ultrasonic flowmeter based on the echo waveform integration method achieved a measurement accuracy of 1.0 level.关键词
流量计量/气体超声波流量计/信号处理/回波波形积分/数学模型/测量特征点Key words
flow mesurement/gas ultrasonic flowmeter/signal processing/echo waveform integration/mathematical model/measurement feature points分类
通用工业技术引用本文复制引用
CHEN Jie,YANG Haonan,LI Bin..基于回波波形积分的气体超声流量计信号处理方法[J].计量学报,2025,46(11):1598-1605,8.
