A Novel Temperature Drift Compensation Algorithm for Liquid-Level Measurement Systems.

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL Micromachines Pub Date : 2024-12-27 DOI:10.3390/mi16010024

Shanglong Li, Wanjia Gao, Wenyi Liu

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Abstract

Aiming at the problem that ultrasonic detection is greatly affected by temperature drift, this paper investigates a novel temperature compensation algorithm. Ultrasonic impedance-based liquid-level measurement is a crucial non-contact, non-destructive technique. However, temperature drift can severely affect the accuracy of experimental measurements based on this technology. Theoretical analysis and experimental research on temperature drift phenomena are conducted in this study, accompanied by the proposal of a new compensation algorithm. Leveraging an external fixed-point liquid-level detection system experimental platform, the impact of temperature drift on ultrasonic echo energy and actual liquid-level height is examined. Experimental results demonstrate that temperature drift affects the speed and attenuation of ultrasonic waves, leading to decreased accuracy in measuring liquid levels. The proposed temperature compensation method yields an average relative error of 3.427%. The error range spans from 0.03 cm to 0.336 cm. The average relative error reduces by 21.535% compared with before compensation, showcasing its applicability across multiple temperature conditions and its significance in enhancing the accuracy of ultrasonic-based measurements.

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一种新的液位测量系统温度漂移补偿算法。

针对超声检测受温度漂移影响较大的问题，研究了一种新的温度补偿算法。基于超声阻抗的液位测量是一种重要的非接触、非破坏性技术。然而，温度漂移会严重影响基于该技术的实验测量的准确性。本文对温度漂移现象进行了理论分析和实验研究，并提出了一种新的补偿算法。利用外部定点液位检测系统实验平台，研究了温度漂移对超声回波能量和实际液位高度的影响。实验结果表明，温度漂移会影响超声波的速度和衰减，导致液位测量精度下降。该温度补偿方法的平均相对误差为3.427%。误差范围为0.03 cm ~ 0.336 cm。与补偿前相比，平均相对误差减小了21.535%，显示了该方法在多种温度条件下的适用性，对提高超声测量精度具有重要意义。

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来源期刊

Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION

CiteScore

5.20

自引率

14.70%

发文量

1862

审稿时长

16.31 days

期刊介绍： Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.