Analog digital mixed pulse amplitude analyzer and analysis technology thereof

Abstract

The invention discloses an analog digital mixed pulse amplitude analyzer and an analysis technology thereof. The analog digital mixed pulse amplitude analyzer comprises a detector, a fast channel circuit, a slow channel circuit and an FPGA (Field Programmable Gate Array), wherein the fast channel circuit is connected with the output end of the detector through a differentiating circuit, and is used for carrying out amplitude comparison on an exponential signal output by the differentiating circuit, and generating rectangular pulse signals; the slow channel circuit is connected with the output end of the detector through an integrating circuit, and is used for splitting a Gaussian signal output by the integrating circuit, and acquiring baseline values of nuclear pulse signals; the FPGA is connected with the fast channel circuit and the slow channel circuit, and is used for controlling working timing of the fast channel circuit and the slow channel circuit, measuring a time interval of two rectangular pulse signals, determining an optimal baseline value and judging whether signal accumulation occurs or not according to the time interval, and eliminating the counting rate loss brought by the signal accumulation through counting rate correction if the signal accumulation occurs. The analog digital mixed pulse amplitude analyzer has the advantages of fast processing speed, less dead time, low power consumption, high counting rate and the like.

Description

Technical field [0001] The invention specifically relates to an analog-digital hybrid pulse amplitude analyzer and its analysis technology. Background technique [0002] At present, due to the vigorous development of the application of nuclear energy and nuclear technology in our country, coupled with the urgent need to update a large number of old nuclear instruments, our country's demand for high-performance nuclear instruments is increasing; although commercial channels can be used Importing some advanced equipment at a high price, but developing nuclear instruments with independent intellectual property rights is of great significance to my country’s progress in nuclear science and technology. [0003] Multichannel is one of the basic instruments in the research and application of nuclear technology. Since the birth of multichannel technology in the 1950s, multichannel has played a very important role in many fields such as industry, biomedicine, geological prospecting, and elec...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitations of slow processing speed, low energy resolution, and large dead time, the traditional analog multi-channel has been increasingly unable to meet the current applications in various industries, coupled with the emergence of high-performance analog-to-digital converters and the development of digital circuits. The transformation of multi-channel from analog to digital; digital multi-channel has superior performance and multiple functions, and has become a development trend. However, digital multi-channel has defects such as high cost, high power consumption, and poor spectral line noise. subject to certain restrictions; therefore, it is necessary to design and implement a practical hybrid multi-channel that integrates the respective advantages of analog multi-channel and digital multi-channel

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