基于热释电型红外气体探测器的原始信号探究

Exploration of Original Signals of Infrared Gas Detectors Based on Pyroelectric Effect

作为采用非色散分光红外吸收光谱(Non-dispersed Infrared,NDIR)原理的红外光谱气体分析仪的一个核心器件,热释电型红外气体探测器输出信号的特征与后级信号处理息息相关。基于PYS3228TC_G1G20热释电红外气体探测器在不同调制频率下对激励源和输出的原始信号的同步跟踪,深入分析了激励源与探测器输出信号之间的关系。通过这些实验,总结并得出了热释电型红外探测器的初始信号特征,为热释电型红外气体分析仪的信号处理提供了重要的理论参考。

As a core device in an infrared spectral gas analyzer based on Non-Dispersed Infrared（NDIR）principle,the pyroelectric infrared gas detector has its output signal characteristics closely related to the subsequent signal processing.On the basis of the synchronous tracking of excitation source and the output signals from a PYS3228TC-G1G20 pyroelectric infrared gas detector at different frequencies,the relationship between the excitation source and the output signals from the gas detector is analyzed deeply.Through these experiments,the initial signal characteristics of the pyroelectric infrared gas detector are summarized.The results provide an important theoretical reference for the signal processing of pyroelectric infrared gas analyzers.