Energy spectrum measuring system based on software multichannel pulse-height analyzer

An amplitude analysis, multi-channel pulse technology, applied in the X-ray energy spectrum distribution measurement and other directions, can solve the problems of difficult upgrade, high cost, shorten the service life of the radiation energy spectrometer, etc., to achieve low cost, easy improvement or upgrade , good flexibility

CN105842729AActive Publication Date: 2016-08-10FUJIAN NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-08-10

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Abstract

The invention discloses an energy spectrum measuring system based on a software multichannel pulse-height analyzer. The energy spectrum measuring system comprises a radiation probe, a high-speed acquisition card and a computer, wherein the radiation probe is connected with the computer through the high-speed acquisition card, the radiation probe outputs radiation analog pulse signals to the high-speed acquisition card, the high-speed acquisition card converts the radiation analog pulse signals into radiation digital pulse signals and sends the radiation digital pulse signals to the computer, an energy spectrum acquisition control module, the software multichannel pulse-height analyzer and an energy spectrum display and analyzing module, which are realized based on software, are built in the computer, and the energy spectrum acquisition control module is connected with the high-speed acquisition card and conducts acquisition control and communication management for the high-speed acquisition card. The software multichannel pulse-height analyzer conduct smooth processing for the radiation digital pulse signals based on the three-point smoothing algorithm, analyzes the amplitude of the radiation digital pulse signals by using the five-point peak searching algorithm, and outputs analysis result data to the energy spectrum display and analyzing module for displaying and storing, thereby realizing the purpose of measuring radiation spectrum.
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Description

technical field

[0001] The invention relates to the field of radiation measurement, in particular to an energy spectrum measurement system based on a software multi-channel pulse amplitude analyzer. Background technique

[0002] Radiation spectrometer is one of the main instruments for measuring natural or artificial radionuclides, and it is widely used in geological survey, environmental monitoring, particle physics and nuclear physics experiments and other fields.

[0003] In recent years, radiation spectrometers have developed towards multi-channel, computerized and multi-functional directions. The basic structure of typical energy spectrometers at home and abroad is: gamma energy spectrum detector + dedicated multi-channel pulse amplitude analyzer + computer system, Among them, the multi-channel pulse amplitude analyzer is mainly realized by hardware, and gradually develops in the direction of specialization and digitization; the acquisition control, display and processi...

Examples

Embodiment Construction

[0054] Such as Figure 1-5As shown in one, the present invention includes a radiation probe, a high-speed acquisition card and a computer, the radiation probe detects the measured object, and outputs a radiation analog pulse signal to the high-speed acquisition card, and the high-speed acquisition card converts the radiation analog pulse signal into The radiation digital pulse signal is sent to the computer, and the computer is equipped with a software-based energy spectrum acquisition control module, a software multi-channel pulse amplitude analyzer, and an energy spectrum display and analysis module.

[0055] The radiation probe is an NaI crystal detector and related circuits.

[0056] The high-speed acquisition card is a high-speed general-purpose data acquisition card with a PCI interface.

[0057] The energy spectrum acquisition control is based on the communication and control software of the high-speed acquisition card written in .net.

[0058] The software multi-chan...