외부 환경 변화에 의한 비 접촉 체온계의 오차 범위 측정 (Investigation of standard error range of non-contact thermometer by environment)

서지정보

· 발행기관 : 대한통합의학회
· 수록지 정보 : 대한통합의학회지 / 8권 / 4호 / 307 ~ 321페이지
· 저자명 : 김정은, 박상웅, 최혜경

초록

Purpose : When we infected by corona virus, there has several symptoms, such as fever, lower respiratory tract pain, and pneumonia. Measuring body temperature is a simple method to select patients, and non-contact thermometers are widely used during body temperature measurement. Infected patients are selected based on the temperature below 37.5 ℃, which is the normal temperature range. However, changes in the surrounding environment cause errors in infrared measurement. In order to control the this error, the non-contact thermometer sets a correction value, but it is difficult to correct it for all environments. Therefore, we investigate device error values ​​according to changes in the surrounding environment (temperature and humidity) and propose guidelines for stable patient selection.
Methods : For this study, the temperature was measured using three types of non-contact thermometers. For accurate temperature measurement, we used a constant temperature water bath. When temperature measuring, we checked whether the temperature and humidity were maintained using a thermo-hygrometer. The surrounding environment was changed by an air conditioner, humidifier, warmer and dehumidifier.
Results : we measured temperature to various distance. According to the guidelines, the non-contact thermometers use 2 to 3 cm distance. We measured a mercury thermometer, and then non-contact thermometers measured at 3 cm, 5 cm, 7 cm, and 10 cm. At a normal surrounding temperature of 24 ℃, there was no difference at 3 cm, but at a distance greater than that, the temperature lower. Next, we measured another surrounding temperature (above 0 or 40 ℃), the temperature was significantly different from 3 cm. In addition, in the humidity change, the higher the humidity, the less the effect on temperature, and it was found that more temperature errors occur in a dry environment with low humidity.
Conclusion : In conclusion, it seems that more temperature error occurs in dry weather in winter, if it check the body temperature above 35.5 ℃ in winter, it will be necessary to confirm in the circulatory screening process.

영어초록

Purpose : When we infected by corona virus, there has several symptoms, such as fever, lower respiratory tract pain, and pneumonia. Measuring body temperature is a simple method to select patients, and non-contact thermometers are widely used during body temperature measurement. Infected patients are selected based on the temperature below 37.5 ℃, which is the normal temperature range. However, changes in the surrounding environment cause errors in infrared measurement. In order to control the this error, the non-contact thermometer sets a correction value, but it is difficult to correct it for all environments. Therefore, we investigate device error values ​​according to changes in the surrounding environment (temperature and humidity) and propose guidelines for stable patient selection.
Methods : For this study, the temperature was measured using three types of non-contact thermometers. For accurate temperature measurement, we used a constant temperature water bath. When temperature measuring, we checked whether the temperature and humidity were maintained using a thermo-hygrometer. The surrounding environment was changed by an air conditioner, humidifier, warmer and dehumidifier.
Results : we measured temperature to various distance. According to the guidelines, the non-contact thermometers use 2 to 3 cm distance. We measured a mercury thermometer, and then non-contact thermometers measured at 3 cm, 5 cm, 7 cm, and 10 cm. At a normal surrounding temperature of 24 ℃, there was no difference at 3 cm, but at a distance greater than that, the temperature lower. Next, we measured another surrounding temperature (above 0 or 40 ℃), the temperature was significantly different from 3 cm. In addition, in the humidity change, the higher the humidity, the less the effect on temperature, and it was found that more temperature errors occur in a dry environment with low humidity.
Conclusion : In conclusion, it seems that more temperature error occurs in dry weather in winter, if it check the body temperature above 35.5 ℃ in winter, it will be necessary to confirm in the circulatory screening process.

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