用于激光软钎焊温度测量的高精度红外辐射测温装置  

High-precision IR Radiation Temperature Measurement Device for Laser Soldering Temperature Measurement

作　　者：李明超 闫宽 张聪 胡记伟 欧锴[3] 陈绪兵[1] LI Mingchao;YAN Kuan;ZHANG Cong;HU Jiwei;OU Kai;CHEN Xubing(School of Mechanical Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China;Wuhan Fiberhome Technical Services Co.,Ltd,Wuhan 430065,China;Fiberhome Communication Technology Co.,Ltd,Wuhan 430076,China)

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430205 [2]武汉烽火技术服务有限公司,湖北武汉430065 [3]武汉烽火通信科技股份有限公司,湖北武汉430076

出　　处：《红外技术》2025年第1期108-114,共7页Infrared Technology

基　　金：武汉市发展和改革委员会省级服务业发展引导资金项目(2205-420118-89-04-487510);姑苏领军人才计划(ZXL2022518)。

摘　　要：在激光软钎焊加工过程中,实时精准测量焊点温度并调节半导体激光器的输出功率对于保证焊接质量至关重要。为避免因温度测量误差过大或测量速度过慢导致的焊点焦灼、虚焊和假焊等故障,本文设计了用于激光软钎焊的高精度红外辐射测温装置。首先描述了红外辐射测温装置的原理,并阐述了红外辐射信号转换电路设计方法,其次介绍了本文中所用的无限脉冲响应Butterworth型滤波器信号处理方法——无限脉冲响应滤波器Butterworth型;最后,通过实验分析并验证了本装置的性能。实验表明,本装置适用于激光软钎焊焊点温度的非接触测量,在标准黑体炉70~260℃范围内测试区间,误差基本处于±2℃之内,最大误差为2%,在激光软钎焊加工过程中,整体平均误差小于0.8%,可广泛应用于激光软钎焊领域。In the laser soldering process,real-time measurement of the solder joint temperature and adjustment of the output power of the semiconductor laser are crucial for ensuring welding quality.To avoid faults such as solder scorching,virtual soldering,and false soldering caused by excessive temperature measurement errors or slow measurement speeds,a high-precision IR radiation temperature measurement device is designed.First,the principles of IR radiation temperature measurement are introduced,and the design method of the IR radiation signal conversion circuit is explained.Second,the primary signal processing method used in this study,which is a Butterworth-type infinite impulse response filter,is introduced.Finally,the performance of the device is validated through experimental analysis.The experiments demonstrate that the IR radiation temperature measurement device designed in this study is suitable for non-contact measurement of solder joint temperature in laser soldering,with a maximum error of 2℃within the test range of 70-260℃in a standard blackbody furnace.During the laser soldering process,the highest temperature error is less than 0.6%,making it widely applicable to the field of laser soldering.

关 键 词：激光软钎焊 红外辐射 高精度测温 无限脉冲响应滤波器 

分 类 号：TN219[电子电信—物理电子学]