Digital pulse amplitude analyzer adopting spire forming algorithm

A digital pulse and amplitude analysis technology, applied in the field of signal processing, can solve problems such as the inability of energy spectrum to achieve excellent results, unfavorable real-time implementation of algorithms, etc., to improve stability and flexibility, reduce temperature effects, and reduce the impact of circuit noise. Effect

Active Publication Date: 2017-05-31
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0012] Requires a large number of multiplication operations and data storage units, which is not conducive to the real-time implementation of the algorithm
[0013] The above three situations make the energy spectrum obtained by the existing pulse amplitude analyzer unable to achieve excellent results, so it is necessary to design a digital pulse amplitude analyzer with higher energy resolution and better stability

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  • Digital pulse amplitude analyzer adopting spire forming algorithm
  • Digital pulse amplitude analyzer adopting spire forming algorithm
  • Digital pulse amplitude analyzer adopting spire forming algorithm

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Embodiment Construction

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0039] Such as figure 1 As shown, a digital pulse amplitude analyzer using the peak shaping algorithm, including detectors, preamplifiers, ADCs, FPGA digital shapers and microprocessors connected in sequence; the detector outputs nuclear pulse signals to the preamplifier; The amplifier amplifies and adjusts the nuclear pulse signal output by the detector, and outputs the amplified and adjusted signal to the ADC; the ADC performs high-speed sampling on the amplified signal, and outputs the digital pulse sequence signal to the FPGA digital shaper; the FPGA digital shaper The peak shaping algorithm is used to process the digital pulse sequence signal in parallel, and the filtered and shaped signal is output to the micr...

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Abstract

The invention relates to a digital pulse amplitude analyzer adopting a spire forming algorithm. The digital pulse amplitude analyzer comprises a detector, a preamplifier, an ADC (analog-to-digital converter), a FPGA (field programmable gate array) digital former and a processor. The FPGA digital former is adopted, so that operating speed and energy spectrum resolution of a nuclear pulse amplitude analyzer are improved, hardware cost is lowered, and stability and flexibility of a system are improved; the ADC is adopted to convert analog quantity into digital quantity, a digitized energy spectrum measuring method is adopted, and filtering and forming portions of the method are fully realized by a mathematical algorithm, so that influence of circuit noise is lowered due to the digitized processing mode; compared with conventional simulation forming, the digital pulse amplitude analyzer has the advantages of high resolution, high forming linearity, little temperature influence and convenience in parameter adjustment.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a digital pulse amplitude analyzer using a peak shaping algorithm. Background technique [0002] Filter shaping is an important method of nuclear signal processing in the nuclear energy spectrum measurement system. Appropriate filtering and shaping of nuclear signals can reduce the impact of electronic noise, pulse accumulation and ballistic loss on energy resolution. [0003] Spire synthesis is an important method for filter shaping of nuclear pulse signals. The theory of optimal filter shaping of nuclear pulse signals shows that the ideal peak pulse with infinite width has the best signal-to-noise ratio, but it needs to operate on signals with infinite time width, so it cannot be realized by hardware. In view of this situation, the finite-width digital peak shaping can obtain a nearly ideal shaping filtering effect, and can be realized by hardware. Compared with the digital tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36
CPCG01T1/36
Inventor 曾国强葛良全杨剑喻明福刘军王骞
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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