| Abstrakt: |
According to the recent studies, diseases caused by influenza and similar viruses increase the human body temperature (HBT). Therefore, measurement of HBT, continuous fever screening in social areas with human flow, detection of these diseases and then isolation of these people play an important role in reducing the spread of epidemic diseases. The concept of social distance, which has been mandated during the COVID-19 pandemic, highlighted the importance of remote and non-contact HBT measurements. For this purpose, HBT measurements, the use of forehead thermometers due to their ability to perform rapid and non-contact measurements in fever scans and thermal cameras has become widespread. On the other hand, it is critical to have traceable calibrations of these devices for accurate measurement. In this study, a comparative analysis for the performance of two different reference sources, which can be calibrated for forehead thermometers with high precision, has been completed. First of all, surface scanning of these reference has been done by using a high precision and resolution thermal camera, and a transfer standard reference radiation thermometer. Then, the obtained results have been compared. Moreover, the temperature distributions of the active radiant areas of the reference sources have been extracted from the obtained results. Subsequently, both sources have been set to the same temperature values at certain intervals and their stability has been checked. Besides, ten forehead thermometers from different manufacturers have been calibrated by using two different reference sources. According to these measurements, it has been concluded that both reference sources can be used in the calibration of forehead thermometers with high accuracy. [ABSTRACT FROM AUTHOR] |
