依据聚合物中热发光与热激电流同时测量的数字化测量方法，分析了被测信号的频谱与采样频率，设计了一种零位相滤波器。实测结果表明，使被测信号得以平滑并消除了位相失真。 According to the digital measurement method of simultaneous measurement of thermoluminescence and heat shock current in polymer, the spectrum and sampling frequency of the signal under test were analyzed, and a zero phase filter was designed. The measured results show that the measured signal is smoothed and the phase distortion is eliminated.