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Baseline correcting method and system for digital flash pulses

A scintillation pulse and baseline correction technology, which is applied in the direction of radiation measurement, measurement devices, instruments, etc., can solve the problems of baseline drift in front-end electronics, and achieve the effect of improving the signal-to-noise ratio

Active Publication Date: 2014-08-06
RAYCAN TECH CO LTD SU ZHOU
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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a baseline correction method and system for digital scintillation pulses, which are used to solve the problem of high-energy physical particle detection and front-end electronics baseline drift in medical imaging equipment

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  • Baseline correcting method and system for digital flash pulses
  • Baseline correcting method and system for digital flash pulses

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Embodiment Construction

[0039] The invention discloses a baseline correction method and system for digitized scintillation pulses, which are used to solve the baseline drift problem of front-end electronic systems in the field of high-energy physics particle detection and medical imaging equipment. This method samples scintillation pulses with multiple threshold voltages, utilizes prior knowledge of scintillation pulses, and uses innovative digital signal processing algorithms to effectively and accurately detect baseline drift caused by detector leakage current, pulse tailing, and noise interference. and fast adaptive correction, while improving the signal-to-noise ratio of scintillation pulse data measurement results and the stability of the data acquisition system.

[0040] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiment...

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Abstract

A baseline correcting method and system for digital flash pulses includes: using a multi-threshold voltage sampling method to perform time shaft sampling on flash pulse signals so as to obtain the time-threshold sampling points of flash pulse waveforms; selecting the time-threshold sampling points, using the shape features of the flash pulses to rebuild pulse waveforms and distinguish model parameters, and estimating the baseline drift mean value of the flash pulses accordingly; performing baseline correction on the flash pulse waveforms according to the base line drift mean value. The invention further discloses a baseline correcting system for the digital flash pulses. The system comprises a digital sampling module, a baseline drift calculation module and a baseline correcting module. By the method and the system the baseline drift of the flash pulses can be discriminated effectively and accurately, fast real-time self-adaptation baseline correction is achieved, and the signal to noise ratio of flash pulse data measuring results and stability of a data acquiring system are increased.

Description

technical field [0001] The invention belongs to the field of high-energy physical detectors and signal processing, and in particular relates to a baseline correction method and system for digital scintillation pulses, which can be applied to high-energy particle detection and medical imaging equipment. Background technique [0002] In most fields of high-energy particle detection and medical imaging equipment, the scintillation pulses collected and processed by the data acquisition system are usually converted by scintillation crystals to high-energy particles (such as: x-rays, γ-rays, etc.) Converted into an electrical pulse signal that can be measured, the typical scintillation pulse waveform in the prior art is as figure 1 shown. In the information extraction of scintillation pulses, due to the influence of detector leakage current, scintillation pulse tailing, noise interference and other factors, scintillation pulses are often superimposed on an unstable baseline. Thi...

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Application Information

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IPC IPC(8): G01T1/208
CPCG01T1/208
Inventor 谢庆国陈源宝朱俊吴中毅
Owner RAYCAN TECH CO LTD SU ZHOU
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