Temperature measurement method and system

Abstract

The invention discloses a temperature measurement method, which comprises the following steps: S101, obtaining a first temperature value of at least one to-be-measured target in a view field area; S102, obtaining a distance value corresponding to the to-be-measured target in the view field area; and S103, according to the distance value obtained in the step S102, calculating the temperature errorthrough a pre-calibrated function relationship between the distance and the temperature error, and correcting the first temperature value by using the temperature error to obtain a second temperaturevalue, wherein the second temperature value is the temperature of the to-be-measured target. According to the invention, a depth camera and an infrared detector are used for collecting the same view field area, and the position of a to-be-detected target in a far-infrared image is determined according to the pixel points of the to-be-detected target in a depth image, further the temperature valueobtained in the far infrared image is corrected according to the distance value obtained in the depth image to obtain the accurate temperature value of the to-be-detected target, and the temperature measurement accuracy is improved through the synergistic effect of the depth camera and the infrared detector.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a temperature measurement method and system. Background technique [0002] Non-contact body temperature detection is more and more widely used in homes and public places. Among them, the handheld thermometer needs to measure the corresponding parts of the subject when the subject is still, which has high accuracy but poor user experience and slow measurement speed. The infrared thermal imager based on infrared temperature measurement technology can quickly detect the temperature of objects. It has the advantages of wide measurement range, easy fast and dynamic measurement, and can determine the temperature of tiny targets. It can be used in airports, subway stations, hospitals, etc. Public places with high traffic. In theory, objects with a temperature higher than absolute zero will continuously emit infrared radiation energy to the surrounding space. Therefore,...

AI Technical Summary

Problems solved by technology

However, the infrared thermal imager is easily affected by the distance of the object to be measured during the temperature measurement process. The distance between the object to be measured and the thermal imager has different effects on the temperature of the object to be measured. With the increase of the measurement distance, the atmospheric penetration The rate is reduced, and it is easy to produce measurement errors when measuring

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