基于回波波形积分的气体超声流量计信号处理方法

陈洁, 杨浩男, 李斌

计量学报 ›› 2025, Vol. 46 ›› Issue (11) : 1598-1605.

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计量学报 ›› 2025, Vol. 46 ›› Issue (11) : 1598-1605. DOI: 10.3969/j.issn.1000-1158.2025.11.07
流量计量

基于回波波形积分的气体超声流量计信号处理方法

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Signal Processing Method for Gas Ultrasonic Flowmeter Based on Echo Waveform Integration

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摘要

针对气体超声波流量计信号处理中难以找到稳定的测量特征点的问题,通过模型推导和实流验证,研究构建了一种基于回波波形积分的信号处理方法。该方法利用回波波形上半周期的各采样点求取回波波形能量,通过求取采样点累积能量找到最接近阈值的2个采样点,得到特征点,从而计算超声波渡越时间及气体流量。在基于STM32的双核心系统上实时完成该信号处理方法,并在国家认可的检测机构浙江迪元仪表有限公司进行标定实验,结果表明:基于回波波形积分的信号处理方法的超声波流量计达到1.0级准确度。

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

引用本文

导出引用
陈洁, 杨浩男, 李斌. 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 https://doi.org/10.3969/j.issn.1000-1158.2025.11.07
CHEN Jie, YANG Haonan, LI Bin. Signal Processing Method for Gas Ultrasonic Flowmeter Based on Echo Waveform Integration[J]. Acta Metrologica Sinica. 2025, 46(11): 1598-1605 https://doi.org/10.3969/j.issn.1000-1158.2025.11.07
中图分类号: TB937   

参考文献

[1]
常宏岗, 段继芹. 中国天然气计量技术及展望[J]. 天然气工业202040(1):110-118.
CHANG H G DUAN J Q. China's natural gas metering technology and prospects [J]. Natural Gas Industry202040 (1): 110-118.
[2]
常季成. 国内外天然气计量技术现状及发展趋势[J]. 仪器仪表标准化与计量2019(2):36-38.
CHANG J C. The current situation and development trend of natural gas metering technology at home and abroad [J]. Instrument Standardization & Metrology2019 (2): 36-38.
[3]
FAN S J ZHUO Y. A multi-frequency ultrasonic flowmeter applicable to liquid with gas bubbles[C]// IEEE International Instrumentation and Measurement Technology Conference. Hangzhou, China, 2011:1-4.
[4]
HU L QIN L MAO K, et al. Optimization of Neural Network by Genetic Algorithm for Flowrate Determination in Multipath Ultrasonic Gas Flowmeter[J]. IEEE Sensors Journal201616(5):1158-1167.
[5]
赵伟国, 卜勤超, 姚海滨, 等. 基于双声道的低压超声气体流量计数据融合方法[J]. 计量学报202142(7):873-878.
ZHAO W G BU Q C YAO H B, et al. Data fusion method for low-pressure ultrasonic gas flow meters based on dual channel [J]. Acta Metrologica Sinica202142 (7): 873-878.
[6]
季涛. 时差法多声道气体超声波流量计的研究[D]. 杭州: 浙江大学,2017.
[7]
SABATINI A M. A digital-signal-processing technique for ultrasonic signal modeling and classification[J]. IEEE Transactions on Instrumentation & Measurement200150(1):15-21.
[8]
HAUPTMANN P HOPPE N PUTTMER A. Application of ultrasonic sensors in the process industry[J]. Measurement Science & Technology2002(8):13.
[9]
CHEN Q LI W WU J.Realization of a multipath ultrasonic gas flowmeter based on transit-time technique[J]. Ultrasonics201454(1):285-290.
[10]
LI B GOU Y CHEN J, et al. Peak ratio characteristic value sequence based signal processing method for transit-time ultrasonic gas flowmeter[J]. Energies2021, 14.
[11]
江圳, 徐科军, 马杰, 等. 基于动态可变阈值的低功耗单声道气体超声波流量计[J]. 计量学报202243(03):360-369.
JIANG Z XU K J MA J, et al. Low power consumption single channel gas ultrasonic flowmeter based on dynamic variable threshold [J]. Acta Metrologica Sinica202243 (03): 360-369.
[12]
戈文祺,张坤,刘财智, 等. 基于小波阈值算法的气体超声波流量计信号预处理[J]. 计量学报202445(10):1502-1511.
GE W Q ZHANG K LIU C Z, et al. Signal Preprocessing of Gas Ultrasonic Flowmeter based on Wavelet Threshold Algorithm [J]. Acta Metrologica Sinica202445(10):1502-1511.
[13]
PARRILLA M ANAYA J J FRITSCH C. Digital signal processing techniques for high accuracy ultrasonic range measurements [J]. Instrumentation & Measurement IEEE Transactions on199140(4):759-763.
[14]
林东方, 朱建军, 付海强, 等. 均方误差意义下的正则化参数二次优化方法[J]. 测绘学报202049(4):443-451.
LIN D F ZHU J J FU H Q, et al. A quadratic optimization method for regularization parameters under mean square error [J]. Acta Geodaetica et Cartographica Sinica202049 (4): 443-451.
[15]
CHEN H ZUO M J WANG X, et al. An adaptive Morlet wavelet filter for time-of-flight estimation in ultrasonic damage assessment[J]. Measurement201043(4):570-585.
[16]
RICCI M SENNI L BURRASCANO P.Exploiting Pseudorandom Sequences to Enhance Noise Immunity for Air-Coupled Ultrasonic Nondestructive Testing[J]. IEEE Transactions on Instrumentation & Measurement201261(11):2905-2915.
[17]
黄雅, 徐科军, 刘陈慈. 科氏质量流量计振幅对零点影响[J]. 计量学报202344(2):211-218.
HUANG Y XU K J LIU C C. Effect of amplitude on zero point of Coriolis mass flowmeter [J]. Acta Metrologica Sinica202344 (02): 211-218
[18]
穆立彬, 徐科军, 刘博, 等. 基于可变阈值和过零检测的四声道气体超声波流量变送器[J]. 计量学报201940(2):266-271.
MU L B XU K J LIU B, et al. A four channel gas ultrasonic flow transmitter based on variable threshold and zero crossing detection [J]. Acta Metrologica Sinica201940 (2): 266-271.

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