Forming time adaptive digital pulse filtering method and device and electronic equipment

A digital pulse and filtering device technology, applied in the field of nuclear radiation detection, can solve the problems of energy resolution deterioration, baseline drift, and exacerbated pulse accumulation, etc., and achieve the effects of compensating for ballistic loss effect, high pulse count rate, and high energy resolution

Pending Publication Date: 2022-06-24
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0008] The object of the present invention is to provide a digital pulse filtering method, device and electronic equipment with adaptive shaping time, which is used to solve the problem that if the selected shaping time is small, although the pulse counting rate is improved, it will cause energy resolution problems. Deterioration, if the selected shaping time is large, it wi

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  • Forming time adaptive digital pulse filtering method and device and electronic equipment
  • Forming time adaptive digital pulse filtering method and device and electronic equipment
  • Forming time adaptive digital pulse filtering method and device and electronic equipment

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[0042] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and their sequence is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0043] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "ex...

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Abstract

The invention discloses a digital pulse filtering method and device with self-adaptive forming time and electronic equipment, and relates to the technical field of nuclear radiation detection. The method comprises the following steps: acquiring rise time of an actual input signal; determining a time interval of adjacent incident pulses based on the rise time; on the basis of the time interval, the peak reaching time of the trapezoidal shaping filter which is randomly distributed according to the input pulse interval is independently determined for each detected X-ray signal, so that the higher pulse counting rate is realized; and based on the rise time, separately confirming the flat-top time of the trapezoidal shaping filter for each detected X-ray pulse signal, so as to compensate for the ballistic loss effect based on the flat-top time. The method is adaptive to the flattop time of the trapezoidal filter, and the flattop time of each detected X-ray is independently selected, so that higher energy resolution is realized.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a shaping time adaptive digital pulse filtering method, device and electronic equipment. Background technique [0002] Nuclear radiation is ray particles emitted by a radioactive source, and the ray is incident on the detector to generate a pulse current signal. The preamplifier converts the pulse current signal into a voltage signal, and then the digital pulse processing system obtains information such as energy, time, and position. The goal of the digital pulse processing system is to accurately extract the pulse signal amplitude caused by the incident ray particles to achieve the best signal-to-noise ratio and high energy resolution. The pulse processing system is mainly composed of sub-modules such as filter shaping, accumulation suppression, baseline elimination and amplitude extraction. Among them, filter shaping is the most critical module. Its functio...

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Application Information

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IPC IPC(8): G01T1/24H03H1/02
CPCG01T1/24G01T1/247H03H1/02
Inventor 张晶张立军王冠鹰叶青青杜文倩陈灵新
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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