传感技术学报2026，Vol.39Issue(1)：1-9,9.DOI:10.3969/j.issn.1004-1699.2026.01.001
基于TDC-GP22的高精度声速仪设计与实现
Design and Implementation of a High-Precision Sound Velocity Meter Based on TDC-GP22
摘要
Abstract
In marine resource exploration and environmental monitoring activities,accurate measurement of underwater sound velocity in-formation is often required.A low-cost miniaturized sound velocity instrument is designed by using TDC-GP22.In response to the prob-lems of ultrasonic attenuation of the time of flight(TOF)method for measuring sound velocity,a variable threshold algorithm based on the first wave pulse width is proposed,which dynamically adjusts the detection threshold based on the first wave pulse width value of the echo signal,improving the stability of the measurement results.At the same time,by analyzing the common sources of errors in the sound velocity measurement process,a temperature compensation algorithm based on RBF neural network is designed in the dynamic calibration process of the system,which calibrates the frequency offset of the transducer and the acoustic electric delay caused by tem-perature.The sound velocity measurement results under different temperature and salt conditions indicate that the system can obtain high-precision underwater sound velocity information at a lower cost.关键词
声速仪/声速测量/TDC-GP22/超声波/首波检测/RBF神经网络Key words
sound velocity meter/sound velocity measurement/TDC-GP22/ultrasound/first wave detection/RBF neural network分类
信息技术与安全科学引用本文复制引用
赵冬冬,王磊,陈朋,李亦然,吕成财..基于TDC-GP22的高精度声速仪设计与实现[J].传感技术学报,2026,39(1):1-9,9.基金项目
国家自然科学基金项目(62576316,62371421,62001418) （62576316,62371421,62001418）
浙江省自然科学基金项目(LQ21F010011) （LQ21F010011）
