Page 221 - 《应用声学》2024年第6期

第 43 卷 第 6 期 Vol. 43, No. 6
2024 年 11 月 Journal of Applied Acoustics November, 2024

⋄ 研究报告 ⋄

基于回声感知技术的介质温度监测 ∗

余思琦 张世平 † 沈国清

(华北电力大学能源动力与机械工程学院 北京 102206)

摘要：声学温度感知技术具有测温范围广、精度高、速度快等特点，在空冷系统和仓储室测温领域应用前景广
阔。针对空冷系统和仓储室现有测温技术的问题，该文研究了回声法测温的可行性及稳定性，利用改进后的互
相关法测得时延估计，进一步计算得到介质温度。分别用扫频脉冲信号和高斯脉冲信号作为激励声源信号进
行仿真，得到高斯脉冲信号测温效果更好。在常温下进行大空间回声测温实验，并在管道内进行不同温度下的
回声测温实验。结果表明，上述工况均能得到准确稳定的待测温度，最大绝对误差为 ±0.85 C，有望应用在空
◦
冷系统测温和粮温测量中。
关键词：回声感知技术；声学测温；空冷系统；仓储室
中图法分类号: TK31 文献标识码: A 文章编号: 1000-310X(2024)06-1397-09
DOI: 10.11684/j.issn.1000-310X.2024.06.024

The medium temperature monitoring based on echo sensing technology

YU Siqi ZHANG Shiping SHEN Guoqing

(School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China)

Abstract: Acoustic temperature sensing technology has a wide range of temperature measurement, high
precision, speed and other characteristics. It has a very broad application prospect in the air cooling system and
storage room temperature measurement field. Aiming at the problems of the existing temperature measurement
technology in air-cooling system and storage room, this paper investigates the feasibility and stability of the echo
method for temperature measurement. The time delay estimation is measured by using the improved mutual
shut-off method in order to calculate the medium temperatue. The swept pulse signal and the Gaussian pulse
signal are used as incentive signals in the simulation, and the Gaussian pulse signal was obtained to be more
effective in temperature measurement. The large space echo temperature measurement experiment at normal
temperature and the echo temperature measurement experiment at different temperatures in the pipeline all
prove that they can measure accurate and stable temperature, and the maximum absolute error of ±0.85 C.
◦
So, the above results are expected to be applied in air cooling system temperature measurement and grain
temperature measurement.
Keywords: Echo-sensing technique measurement; Acoustic temperature measurement; Air cooling system;
Storage room

2023-07-27 收稿; 2023-11-10 定稿
国家自然科学基金项目 (12274122)
∗
作者简介: 余思琦 (1998– ), 女, 浙江杭州人, 硕士研究生, 研究方向: 声学测温。
† 通信作者 E-mail: zhangshipingf718@126.com