System and method for correcting external temperature reference source of infrared thermometer

Abstract

The invention relates to a system and a method for correcting an external temperature reference source of an infrared thermometer. The system comprises a displacement device and a metal separation blade, wherein a temperature sensor is arranged in the metal separation blade; the displacement device is used for driving the metal separation blade to move to the front of a lens of the infrared thermometer to shield the lens, and driving the metal separation blade to move forwards from the lens after staying in front of the lens for a preset time; the metal separation blade is used as an externaltemperature measurement reference source, and the internal temperature of the metal separation blade is measured through the built-in temperature sensor; the infrared thermometer is used for obtainingthe internal temperature output by the temperature sensor and calibrating the reference temperature again according to the internal temperature. According to the invention, temperature correction canbe carried out on the infrared thermometer periodically; meanwhile, the infrared thermometer can still correct the temperature of a temperature drift phenomenon while external blackbody equipment isnot used, the large cost of purchasing a blackbody and the high requirement of arranging the blackbody for the use space are avoided, and the work energy consumption of the whole temperature measurement system can be saved.

Description

technical field [0001] The invention relates to the field of infrared temperature measurement, in particular to a correction system and method for an external temperature reference source of an infrared thermometer. Background technique [0002] For malignant infectious diseases such as SARS and new coronary pneumonia, timely identification and proper treatment of infected persons are important means to prevent the continuous spread of the epidemic. Since people infected with this type of disease are often accompanied by symptoms of fever and high fever, screening people with abnormal body temperature in the crowd has become one of the main methods to identify infected people. The infrared thermometer can measure the body temperature of a large number of people without contact without affecting the efficiency of pedestrian traffic. This device is suitable for places with large crowd density and traffic such as airports, railway stations, and subway stations. Due to environm...

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Problems solved by technology

However, this prior art solution requires black body equipment to be placed at a fixed position within the field of view of the infrared thermometer, and the black body equipment must be placed within the optimum temperature measurement range, which has strict requirements on the use space and environment. The space is inconvenient to use this solution; in addition, because the black body equipment used needs to be purchased additionally, the cost of the overall temperature measurement system will increase

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