A Multi-channel Digital Spectrometer with Spectrum Stabilization Function
A multi-channel, spectrometer technology, applied in the field of nuclear radiation detection, can solve the problems of difficult to deal with high count rate nuclear pulse signals, difficult to implement filters, slow response, etc., and achieve the advantages of simple structure, wide application range, and improved processing speed Effect
Active Publication Date: 2016-08-31
武汉海王核能装备工程有限公司
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Problems solved by technology
Due to the slow response, it is difficult for this type of spectrometer to handle nuclear pulse signals with high count rates, and it is also difficult to implement various complex filters in it due to the limitation of analog circuits
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] like figure 1 As shown, the present invention is mainly made up of front-end analog circuit, high-speed high-precision ADC circuit, FPGA circuit and communication module four parts, is connected in serial mode between four parts, nuclear pulse signal enters spectrometer by front-end analog circuit, after signal conditioning Then it enters the ADC, and the ADC completes the digitization of the analog signal, and then the digital signal enters the high-performance FPGA for digital signal processing, and the processing result is transmitted to the computer through the communication module. During the working process, FPGA provides gain control signals to the front-end analog circuit according to the calculation results, and accepts the comparison results of the high-speed comparator.
[0017] like figure 2 As shown, the front-end analog circuit is mainly compose...
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The invention relates to the technical field of nuclear radiation detection, and provides a multi-channel digital spectrometer with a function of stabilizing the spectrum, including a front-end analog circuit, a high-speed high-precision ADC circuit, a high-speed FPGA circuit and a communication module, and the above-mentioned parts are connected in a serial manner Connection, the nuclear pulse signal enters the spectrometer from the front-end analog circuit, enters the ADC conversion circuit after signal conditioning, and the ADC conversion circuit completes the digital conversion of the analog signal, and then the signal enters the FPGA circuit for digital signal processing, and the processing result is transmitted to the In the computer; the FPGA circuit provides a gain control signal to the front-end analog circuit according to the calculation result, and accepts the comparison result of the high-speed comparator in the front-end analog circuit. The invention utilizes a brand-new front-end analog circuit design and a high-speed and high-precision ADC, which greatly improves the processing speed of the digital spectrometer, and can connect up to four energy spectrum detectors at the same time, so that the application range is wider.
Description
technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a digital spectrometer for nuclear pulse signals in the back-end electronics of a nuclear radiation detection device. Background technique [0002] In the field of nuclear radiation detection technology, energy spectrum measurement is a key measurement technology. Since ray energy spectrum contains rich nuclide information, users can use this information to distinguish nuclide types and determine the content of various nuclides. Spectroscopy is increasingly used in a variety of radiation monitoring applications. In actual use, energy spectrum measurement is realized by various types of energy spectrum instruments, and the functions and performance indicators of these instruments directly determine the quality of the measured energy spectrum. [0003] At present, the spectrometer devices used at home and abroad are still mostly analog multi-channel spectromete...
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IPC IPC(8): G01T1/36
Inventor 龚玉巍贾铭椿郭智荣陈祥磊代传波赵锡郭宁博
Owner 武汉海王核能装备工程有限公司