True temperature multispectral measurement method for deflagration to detonation transition process

Abstract

The invention discloses a true temperature multispectral measurement method for a deflagration to detonation transition process, and solves the problem that the true temperature cannot be obtained byusing an existing method. According to the invention, optical signals generated during deflagration or detonation of explosives and charges are transmitted to a DMD spectrograph to form a plurality ofspectrum channels and corresponding radiance information by optical fibers through an optical detection unit before the optical fibers are damaged, and the true temperature and the spectral emissivity of a solid product in the deflagration to detonation transition process of the explosives are obtained through inversion. The method has the characteristics of wide temperature measurement range, high sampling frequency and high measurement precision. The method is suitable for real-time measurement of the true temperature and spectral emissivity of high-temperature solid products in the deflagration to detonation transition process based on a sample tube method, and is also suitable for measurement of the deflagration temperature or detonation temperature of other energetic materials with the temperature ranging from 1400 DEG C to 4000 DEG C.

Description

technical field [0001] The invention relates to a method for measuring true temperature and multi-spectrum in the combustion-to-detonation process, which is suitable for the real-time measurement of the true temperature and spectral emissivity of high-temperature solid products in the combustion-to-detonation process of explosives and charges based on the sample tube method, and is also applicable to Measurement of combustion temperature or detonation temperature of other energetic materials. Background technique [0002] Deflagration to Detonation Transition (DDT) is a complex physical and chemical reaction that occurs during the development of propellant charges from combustion to stable detonation. It widely exists in the combustion of rocket propellants and the launch of barrel weapons Combustion of explosives, detonation of blasting equipment, production, storage and use of explosives. Temperature is one of the important state parameters of matter, and non-contact ther...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring true temperature and multi-spectrum in the combustion-to-detonation process, so as to overcome the deficiency that the real temperature cannot be obtained due to factors such as the combustion of explosives and the influence of the spectral emissivity of explosion flames in existing radiation temperature measuring devices.

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