Digital current multichannel parallel quick current pre-discharging system

A digital current, fast technology, used in radiation measurement, measurement devices, instruments, etc., can solve problems such as difficulty in retaining time information and pulse amplitude information at the same time

Active Publication Date: 2018-11-02
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for traditional preamplifier circuits to retain complete time information and pulse amplitude information during signal amplification.

Method used

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  • Digital current multichannel parallel quick current pre-discharging system
  • Digital current multichannel parallel quick current pre-discharging system
  • Digital current multichannel parallel quick current pre-discharging system

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Embodiment Construction

[0021] The specific technical solutions of the present invention are described in conjunction with the accompanying drawings.

[0022] (1) Overall system design

[0023] figure 1 Shown is the general design diagram of parallel fast preamplifier with multiple channels of digital current. The system is mainly composed of the power part circuit outside the dotted line frame and the current pulse signal amplifying circuit part inside the dotted line frame. The power supply part includes two columns of symmetrical parts, and the two columns of symmetrical parts are positive power input and negative power input respectively; the positive power input and negative power input are respectively connected to the π-type LC filter circuit, and then respectively connected to the electronic filter circuit , and finally connect the positive power supply chip and the negative power supply chip respectively, the positive power supply chip and the negative power supply chip are respectively co...

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Abstract

The invention belongs to the technical field of a multi-channel pulse amplitude analyzer, and particularly relates to a digital current multichannel parallel quick current pre-discharging system. Thesystem is mainly composed of a power supply part circuit and a current pulse signal amplifying circuit part. The power supply part comprises two symmetric parts, wherein the two symmetric parts are composed of a positive power supply input and a negative power supply input. The positive power supply input and the negative power supply input are connected with a pi-type LC filter circuit, and are connected with an electronic filter circuit. The positive power supply input and the negative power supply input are respectively connected with a positive power supply chip and a negative power supplychip. The positive power supply chip and the negative power supply chip are connected with operation amplifier power supply decoupling circuits. The two operation amplifier power supply decoupling circuits are connected with the current pulse signal amplifying circuit part. The system supplies lossless readout and amplification of an original fast current signal of a photoelectric converter in the system. On the condition of an ultrahigh-speed current signal, signal amplification is realized, and furthermore the time characteristic and the amplitude characteristic of the original time are wholly kept, thereby laying a basic for time spectrum measurement for digital current multiple channels.

Description

technical field [0001] The invention belongs to the technical field of multi-channel pulse amplitude analyzers, in particular to a parallel fast current pre-amplification system with multiple digital current channels. Background technique [0002] Multi-channel pulse amplitude analyzer is the most commonly used instrument in nuclear spectrum measurement and nuclear radiation field measurement. In recent years, thanks to the rapid development of large-scale integrated circuits and hardware-programmable digital devices, multi-channel pulse amplitude analyzers have also developed from traditional analog pulse amplitude analyzers to digital multi-channel pulse amplitude analyzers with stronger performance and richer functions. [0003] Compared with the traditional analog multi-channel pulse amplitude analyzer, the digital multi-channel pulse amplitude analyzer has the characteristics of strong filter shaping ability, and it can synthesize the best filter according to the charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/00G01T1/36G01T7/00
Inventor 曾国强顾民杨小峰胡传皓卿松龚迪琛葛良全
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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