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System and method for realizing gamma-gamma digital coincidence measurement by using virtual instrument technology

A virtual instrument and technology technology, applied in the field of γ-γ digital coincidence measurement system, can solve the problems of expensive electronic instruments, difficult system repair and update, user instrument adjustment and optimization, etc., and achieve compact structure, short development cycle, and complex Strong usability

Active Publication Date: 2020-07-14
NANHUA UNIV
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Problems solved by technology

However, in the general γ-γ digital coincidence measurement system, the problem of increasingly difficult system repair and update is very obvious, and it is difficult for users to make corresponding adjustments and optimizations to the functions of the instrument according to their own needs, and electronic instruments with independent functions expensive

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  • System and method for realizing gamma-gamma digital coincidence measurement by using virtual instrument technology

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Embodiment Construction

[0035] The technical principle of the present invention is: according to the gamma-gamma coincidence measurement principle, a gamma cascade ray measurement device is built. The device retains the front-end electronic module, amplifies and shapes the analog signal, and ensures the relative time Under the condition that the information is not lost, reduce the demand for the performance of the back-end high-speed data acquisition card 4; at the same time, use the virtual instrument technology, use the LabVIEW graphical language to program the virtual instrument processing software, and integrate the virtual instrument processing software, high-speed data acquisition card 4 and γ Cascaded ray devices are combined to form a gamma-gamma digital coincidence measurement system.

[0036] Such as figure 1 As shown, the present invention utilizes virtual instrument technology to realize the system of γ-γ digital coincidence measurement comprising a first probe 11, a first amplifier 21, a...

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Abstract

The invention discloses a system and method for realizing gamma-gamma digital coincidence measurement by using a virtual instrument technology, and the system comprises a first probe, a first amplifier, a second probe and a second amplifier; the first probe is connected with the input end of the first amplifier, and the second probe is connected with the input end of the second amplifier; the system further comprises a high-speed data acquisition card and a virtual instrument, the virtual instrument comprises a data acquisition VI module, an energy spectrum measurement VI module, a relative time delay analysis VI module and a coincidence time discrimination VI module, the output ends of the first amplifier and the second amplifier are electrically connected with the high-speed data acquisition card, and the high-speed data acquisition card is connected with the data acquisition card. According to the gamma-gamma digital coincidence measurement system and the gamma-gamma digital coincidence measurement method, a virtual instrument technology is utilized, universal computer hardware and an operating system are used as supports, platform programming software is developed through an integrated tool, and the gamma-gamma digital coincidence measurement system and the gamma-gamma digital coincidence measurement method which are compact in structure, strong in expansion function, low in investment cost, short in development period and strong in reusability and have various measurement and analysis functions are provided.

Description

technical field [0001] The invention belongs to the technical field of radioactivity measurement, and in particular relates to a system and method for realizing gamma-gamma digital coincidence measurement by using virtual instrument technology. Background technique [0002] The coincidence method is one of the most accurate methods for radioactivity measurement, and has a wide range of applications in radioactivity measurement, neutron physics, nuclear reaction research and other fields. With the emergence and development of high-performance ADCs and large-scale programmable digital devices, high-speed A / D conversion devices can be used to convert analog signals into digital signals, and digital processing can be performed in many different ways. Compared with the traditional analog coincidence, the digital coincidence can realize data return visit, as well as arbitrarily set the number, size and position of the threshold window, and can also adjust the delay time and the si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/178
CPCG01T1/178
Inventor 赵修良贺三军秦慧超赵健为周超刘丽艳
Owner NANHUA UNIV
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