光学精密工程2026，Vol.34Issue(2)：201-217,17.DOI:10.37188/OPE.20263402.0201
热电制冷主动温控对双通道非制冷红外SF6检漏系统性能的提升
Performance enhancement of a dual-channel uncooled infrared SF6 leak detection system via thermoelectric active temperature control
摘要
Abstract
To address performance degradation caused by detector temperature fluctuations in a dual-chan-nel infrared imaging system for sulfur hexafluoride(SF6)gas leak detection,this study developed an active temperature control module based on a Thermoelectric Cooler(TEC)to enhance its stability.The opti-mal spatial layout of the TEC was determined by combining experimental measurements with thermal field simulations,and a closed-loop control system governed by a PID algorithm was implemented.Compara-tive experiments demonstrated that the integrated control module significantly enhances the system perfor-mance.Regarding imaging quality,the steady-state standard deviation of the grayscale value is reduced by 40.87%,the linearity error is decreased from 7.253 4%to 0.660 4%,and the Noise Equivalent Temper-ature Difference(NETD)is improved by 19.35%,from 14.379 mK to 11.597 mK.In the SF6 gas detec-tion application,the average relative contrast,signal-to-noise ratio,and gas pixel ratio are increased by 123%,56%,and 77%,respectively.This enhancement method effectively suppresses the adverse ef-fects of temperature fluctuations,substantially improving SF6 gas detection capability while enhancing the fundamental imaging quality,and validating a feasible technical pathway for developing high-performance,low-cost portable gas leak detection instruments.关键词
红外成像/六氟化硫/非制冷探测器/温度控制/热电制冷/双通道系统Key words
infrared imaging/Sulfur hexafluoride(SF6)/uncooled detector/temperature control/ther-moelectric cooling/dual-channel system分类
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司文荣,赵莹莹,傅晨钊,李杨,厉奔,虞益挺..热电制冷主动温控对双通道非制冷红外SF6检漏系统性能的提升[J].光学精密工程,2026,34(2):201-217,17.基金项目
国网上海市电力公司科技项目资助(No.B3094024000D) （No.B3094024000D）
