基于多光谱辐射测温法的换能元桥区温度检测技术
基金项目:
瞬态化学效应与控制全国重点实验室开放课题资助项目（No.WDYX23614260206）。
Temperature Measurement of Transducer Bridge by Multispectral Radiation Thermometry
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摘要:火工品换能元起爆过程中桥区温度的全程化精确测量对于研究换能元的电热转换效率、表征火工品点火性能至关重要。本研究通过建立包含6个波长通道的多光谱辐射测温系统，实现了对换能元桥区辐射光谱信号的实时采集，并通过PS800-25一体化标准黑体进行系统标定。针对桥区材料在起爆过程中经历的固态、液态到气态的相变，建立了最优化函数温度解算模型，避免了对光谱发射率模型的依赖，并通过罚函数法进行真温的优化求解。试验结果表明，该方法的测温精度在3%以内，可应用于碳基桥箔点火过程中桥区温度的检测。
Abstract:The precise measurement of the temperature in the bridge area is very important to study the electric thermal conversion efficiency and characterize the ignition performance of the initiating explosive device. In this study, a multispectral radiation thermometry system with 6 wavelength channels was established to realize real-time acquisition of radiation spectral signals from the transducer bridge area, and calibrated through the PS800-25 integrated standard in black body. In view of the phase transition from solid , liquid to gas in the bridge area in the initiation process, an optimization function temperature calculation model was established, which avoids the dependence on the spectral emissivity model, and optimizes the true temperature by the penalty function method. The test results show that the temperature measurement errors of this method is smaller than 3% , the method can be applied to the detection of the bridge area temperature during the ignition of the carbon-based bridge foil.
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