High-precision wide-area intelligent infrared body temperature screening method and system

Abstract

A high-precision wide-area intelligent infrared body temperature screening method and system thereof, wherein the method includes: step 1: identifying and extracting visible light features of the target to be measured, and obtaining the space-time position information of the visible light field of view of the target to be measured; step 2: according to the time-space The position mapping algorithm converts the space-time position information of the visible light field of view into the space-time position information of the infrared light field of view; step 3: according to the space-time position information of the infrared light field of view, collect the directional infrared radiation characteristics of the target to be measured, and convert the infrared radiation characteristic information into corresponding gray value; step 4: use the adaptive temperature mapping calibration algorithm to obtain the absolute value of the temperature of the target to be measured according to the gray value information; step 5: use the intelligent temperature self-calibration compensation algorithm to calculate the temperature of the target to be measured The absolute value of the temperature is subjected to temperature compensation to obtain the final temperature value of the target to be measured. The invention can realize high-precision body temperature detection of infrared body temperature screening in outdoor complex environment, and the accuracy can reach ±0.1°C.

Description

technical field [0001] The invention relates to the technical field of infrared sensing and screening, in particular to a high-precision wide-area intelligent infrared body temperature screening method and system thereof. Background technique [0002] Due to its fast and non-contact advantages, the body temperature screening technology based on infrared radiation perception has been widely used in crowded public places such as airports, railway stations, subways, shopping malls, and schools. However, since the working process of infrared temperature measurement is to collect the infrared radiation of the measured object at a certain distance, the emissivity of the measured object itself, the measurement distance, the atmospheric transmittance, the radiation of the infrared temperature measurement equipment itself, etc. will all be affected, so for a long time It is difficult to improve the temperature measurement accuracy, especially in the cold outdoor environment in the no...

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Problems solved by technology

However, since the working process of infrared temperature measurement is to collect the infrared radiation of the measured object at a certain distance, the emissivity of the measured object itself, the measurement distance, the atmospheric transmittance, the radiation of the infrared temperature measurement equipment itself, etc. will all be affected, so for a long time It is difficult to improve the temperature measurement accuracy, especially in the cold outdoor environment in the northern winter, there are large errors in long-distance temperature measurement

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