Evaluation of Performance and Uncertainty of Infrared Tympanic Thermometers
Evaluation of Performance and Uncertainty of Infrared Tympanic Thermometers
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DOI：
10.3390/s100403073
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发表时间：
2010-04-01
期刊：
影响因子：
3.9
通讯作者：
Chen, Chiachung
中科院分区：
文献类型：
--
作者：
Chung, Wenbin;Chen, Chiachung
红外鼓膜温度计 (ITT) 易于使用且响应速度快。它们广泛用于人体温度测量。测量的准确性和不确定度是这些仪表的重要性能指标。本研究评估了两种红外鼓膜温度计 Braun THT-3020 和 OMRON MC-510 的性能。温度校准器的电池被修改为黑体的标准温度。通过校准方程减少了两个仪表的测量误差。预测值可以满足ASTM标准的要求。不确定度的来源包括固定温度下重复的标准偏差或校准方程的预测值、参考标准值和分辨率。不确定度分析表明，校准方程的不确定度是组合不确定度的主要来源。环境温度对测量的性能没有显着影响。校准方程可以提高 ITT 的准确性。然而，这些方程并没有改善 ITT 的不确定性。
Infrared tympanic thermometers (ITTs) are easy to use and have a quick response time. They are widely used for temperature measurement of the human body. The accuracy and uncertainty of measurement is the importance performance indicator for these meters. The performance of two infrared tympanic thermometers, Braun THT-3020 and OMRON MC-510, were evaluated in this study. The cell of a temperature calibrator was modified to serve as the standard temperature of the blackbody. The errors of measurement for the two meters were reduced by the calibration equation. The predictive values could meet the requirements of the ASTM standard. The sources of uncertainty include the standard deviations of replication at fixed temperature or the predicted values of calibration equation, reference standard values and resolution. The uncertainty analysis shows that the uncertainty of calibration equation is the main source for combined uncertainty. Ambient temperature did not have the significant effects on the measured performance. The calibration equations could improve the accuracy of ITTs. However, these equations did not improve the uncertainty of ITTs.