Automatic digital pole-zero cancellation method

Abstract

The invention relates to the technical field of signal analysis, and particularly discloses an automatic digital pole-zero cancellation method. Setting a default threshold value for pulse signal acquisition on upper computer operation software, and setting a default starting pole zero parameter value; the upper computer operation software sends a command of collecting a pulse waveform after primary pole zero to the digital pulse amplitude analyzer; judging whether the pulse trailing of the received waveform is lower than a baseline value or not; if the pulse trailing is lower than the baseline value, the polar zero parameter value is adjusted; if the pulse trailing is not lower than the baseline value, judging whether the current adjustment is the minimum digit of the pole-zero parameter or not; if the current adjustment is not the minimum digit of the pole-zero parameter, changing the current adjustment digit, and then adjusting the numerical value of the pole-zero parameter; if the current adjustment is the minimum digit of the pole-zero parameter, obtaining an optimal pole-zero parameter value, and ending the automatic pole-zero process; compared with traditional manual operation judgment, the method has the advantages of being rapid, good in consistency, low in requirement for personnel and capable of achieving automatic linkage.

Description

technical field [0001] The invention relates to the technical field of signal analysis, in particular to an automatic digital pole-zero cancellation method. Background technique [0002] In the nuclear instrumentation industry, pole-zero cancellation processing is an important step in the processing of the exponentially decaying signal output by the detector. The original signal output from the detector may have two problems, one is that the output signal has an exponential tailing undershoot due to various reasons, and the other is that the time constant of some detector signals is large, that is, the pulse signal width is large. When the count rate is high, it is easy to generate pulse accumulation. In order to solve these problems, in the traditional analog multi-channel pulse amplitude analyzer, the input signal is processed using a pole-zero cancellation circuit. [0003] like figure 2 As shown, the pole-zero cancellation circuit is an improved differential circuit, ...

AI Technical Summary

Problems solved by technology

[0010] From the above process, it can be seen that debugging the extreme zero parameters is a cumbersome and complicated process, and requires manual participation, and the experience of the participants has a great influence on the speed of debugging. The so-called undercompensation and overcompensation are both morphological descriptions, and there is no one Accurate Judgment Method

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