用红外热谱测量体温的最佳实践:影响准确度的外部因素.
Siavash Mazdeyasna1, Pejman Ghassemi1, Quanzeng Wang1
1Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD 20993, USA.
Sensors (Basel, Switzerland)
|September 28, 2023
概括
使用外部温度参考源 (ETRS) 的选温度计 (ST) 显著提高红外温度计 (IRT) 检测体温升高 (EBT) 的精度. STs在各种环境条件下最大限度地减少了测量误差,提高了流行病查的可靠性.
科学领域:
- 热谱和温度测量仪
- 医疗器械性能评价 医疗器械性能评价
- 环境传感器环境传感器
背景情况:
- 红外温度计 (IRT) 对于高体温 (EBT) 的流行病查至关重要.
- 对影响IRT准确性的外部因素的研究有限.
- 外部温度参考源 (ETRS) 可以弥补IRT的限制.
研究的目的:
- 调查影响IRT和选温度计 (ST) 精度的外部因素.
- 量化STs对独立IRT的性能改进.
- 通过使用温度学来确定精确的EBT检测的最佳参数.
主要方法:
- 用两个IRT进行了台式测量和计算机模拟,使用和不使用ETRS.
- 评估的变量包括视角 (θ),ETRS设置温度 (TETRS),环境温度 (Tatm),相对湿度 (RH) 和工作距离 (d).
- 在各种条件下,计算了IRT和ST的绝对测量误差.
主要成果:
- 查温度计 (ST) 的准确性明显高于单独的IRT,误差<0.12°C与<0.97°C.
- 对EBT检测的最佳TETRS被确定为36-37°C.
- 在广泛的环境范围内,模拟显示了ST的最小温度差异 (高达0.04°C) 与IRT (高达0.28°C) 相比.
结论:
- 在选温度计 (ST) 中使用ETRS可大大提高温度测量精度.
- 精确的校准和环境控制对于可靠的温度计读数至关重要.
- 结果支持开发EBT查的改进标准和最佳实践.
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