红外技术, 2013, 35 (9): 587, 网络出版: 2013-10-23
距离对红外热像仪测温精度影响及提高精度的实验研究
Experimental Study of Infrared Thermal Imagers about Influence of Distance for Temperature Measurement Accuracy and Method of Improving Accuracy
红外热像仪 红外测温 环境因素 提高精度 infrared thermal imager infrared temperature measurement environmental factors accuracy improvement
摘要
基于在固定环境下对手掌各部分温度测量的应用需求, 实验研究了距离对目前最常用红外热像仪测温精度影响及提高精度的方法。首先在环境温度和湿度一定的条件下, 实验研究了在一种测温距离下标定, 不同测温距离测量时的测温精度。实验结果表示, 66 cm测温距离标定下在其距离的测量精度是±0.08℃, 但在 40 cm~112 cm距离的平均测温精度是 0.43℃; 其次实验研究了不同测温距离下重新标定的测温精度, 测量平均绝对误差可以达到 0.07℃, 为在固定环境下利用红外热像仪比较精确的测量物体温度的应用提供了实验数据。
Abstract
Based on the application demand of measuring human palm’s temperature distribution in fixed environment, this paper studied experimentally on influence by the measurement distance on temperature measurement accuracy with a common infrared thermal imager, and tried to improve temperature measurement accuracy. Firstly, on the certain environmental temperature and humidity conditions, the experiments were conducted for temperature measurement accuracy of different measurement distance. The experimental results show that the temperature measurement accuracy is ±0.08℃ at the calibration distance of 66 cm, but the average measurement accuracy is ±0.43℃ at distance from 40cm to 112 cm. Secondly, the further experimental results show that the temperature measurement accuracy can reach ± 0.07℃ if calibrated afresh at different measurement distance. This paper provides experimental data to measure temperature of object more precisely in the fixed environment using an infrared thermal imager.
苏佳伟, 石俊生, 汪炜穑. 距离对红外热像仪测温精度影响及提高精度的实验研究[J]. 红外技术, 2013, 35(9): 587. SU Jia-wei, SHI Jun-sheng, WANG Wei-se. Experimental Study of Infrared Thermal Imagers about Influence of Distance for Temperature Measurement Accuracy and Method of Improving Accuracy[J]. Infrared Technology, 2013, 35(9): 587.