A kind of temperature testing method based on RGB three primary colors

Abstract

The invention provides a temperature testing method based on the three primary colors of RGB. According to the relationship between the imaging gray value of the photosensitive target surface of the high-speed camera and the wavelength, the gray value of the R, G, and B primary colors output by the color high-speed camera is used to measure the temperature. The invention adopts the theory of thermal radiation and establishes a non-contact measurement method, which is suitable for testing the fireball temperature of an explosion field composed of complex materials with high pressure and high-speed airflow under complex and harsh working conditions; the dynamic response is fast, and it is suitable for high temperature of the fireball, extremely fast change, continuous The characteristics of short time; it is suitable for the actual test of the fireball temperature of the warhead, ammunition, thermobaric bombs and other explosive fields in the field test environment.

Description

technical field [0001] The invention belongs to the technical field of testing, and mainly relates to fireball temperature testing in explosion fields. A temperature testing method based on black body radiation is established to meet the testing requirements for fireball temperature during explosions of warheads, ammunition, thermobaric bombs, etc. in the test. Background technique [0002] Ammunition explosion fireball temperature is an important index to measure the thermal damage power and thermal damage effectiveness of ammunition, including parameters such as temperature peak value and duration, which provide support for the evaluation of thermal burn effect. During the detonation process of the ammunition, the temperature changes extremely quickly, and after reaching the maximum value, it drops rapidly in a very short time, accompanied by the destructive effect of the detonation, which makes it very difficult to test the temperature of the detonation fireball. During t...

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Problems solved by technology

[0004] Chinese patent CN104535211A discloses a thermocouple protection device suitable for the fireball response temperature test in the explosion field. By connecting the thermocouple and the protection shell through the installation hole, and placing the thermocouple wire in the concave structure of the protection shell, etc., the protection device can be improved. The environmental adaptability of the thermocouple, this method can complete the single point test, but the response time is limited by the response time of the thermocouple wire, it is not suitable for the temperature test of the explosion field with high fireball temperature, extremely fast change and short duration

Chinese patent CN106679814A discloses a microsecond infrared real-time temperature measurement system, which consists of a high-speed impact system, an optical enhancement system, a detector system, and an acquisition system, and is mainly used to realize infrared temperature signals of materials and structural surfaces under high-speed impact loads The collection and analysis of the damage evolution process of materials and structures. This method is suitable for testing solid materials and cannot be used for fireball temperature testing in explosion sites.

Chinese patent CN103439003A discloses a method for improving the accuracy of infrared temperature measurement. The mercury thermometer is used to measure the surface temperature of the measured object and the ambient temperature, and the infrared temperature measurement result is corrected. This method is only suitable for testing solid objects and lower temperatures. , can not be used for fireball temperature test in range explosion field

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