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A fast peak-finding method for the detection of radioactive substances in seawater

A radioactive material, seawater technology, applied in radiation measurement, X/γ/cosmic radiation measurement, measurement devices, etc., can solve the problems of voltage signal amplitude variation, many interference factors, complex and changeable marine on-site detection environment, etc. The effect of increasing credibility

Active Publication Date: 2019-06-25
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

[0003]However, the actual marine field detection environment is complex and changeable, with many interference factors
During the actual operation, it was found that changes in the marine environment interfered with the measurement of marine substances. The phenomenon was that the amplitude of the detected voltage signal would change irregularly, and it was difficult to quickly and accurately determine the peak corresponding to the radioactive substances in the seawater. Location
In the prior art, the radioactivity measurement method for seawater is carried out on a laboratory platform, therefore, a method must be found for on-site measurement to quickly and accurately determine the location of radioactive substances
[0004] Based on the above reasons, the existing methods for detecting radioactive substances in seawater do not have real-time detection results

Method used

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  • A fast peak-finding method for the detection of radioactive substances in seawater
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  • A fast peak-finding method for the detection of radioactive substances in seawater

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specific Embodiment

[0024] S101. Receive data accumulated for 3 hours from all channels of the radioactive sensor.

[0025] In this embodiment, in order to improve the resolution of the signal and to ensure that the radionuclide accumulates to a certain extent to ensure that the detection limit can be exceeded, this embodiment needs to enrich the radionuclide data for three hours.

[0026] Since various parameter settings are based on three hours of data, in order to avoid errors during the use of the algorithm, it is recommended to enrich the data of three hours from the sensor and apply this algorithm.

[0027] S102. Divide each data value by 10800 to obtain the average data per second of each channel, and then multiply by 10800 to filter out the interference data.

[0028] In this embodiment, since the data of the sensor per second is a positive integer and accumulates data for three hours, it is divided by 10800 to get the average number of each channel in three hours, and then multiplied by ...

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Abstract

The invention discloses a rapid peak searching method for radioactive material detection in the seawater. The method comprises the steps of collecting the data of all channels of a radioactive sensorwithin three hours; processing each data value, and filtering out interference data; ranking all data points in an interval according to the interval corresponding to all the data points in the rangeof the peak possible existence range of a preset nuclide, and selecting a data point with the largest numerical value as a preset peak value; searching valley points closest to numerical values at theleft side and the right side of the preset peak value and calculating to obtain boundary positions; respectively judging the monotonicity of data points on the left side and the right side, and judging the correctness of the peak searching; if peaks on the left side and the right side of the peak value are true peaks, ending the peak searching; if anyone of the peaks on the left side and the right side of the peak value is a false peak, judging that no peak of the radionuclide is found out and ending the peak searching. According to the peak searching method disclosed in the invention, the interval range of nuclide distribution can be rapidly and accurately found out. The accuracy and the real-time performance of the measurement result of radioactive materials in the seawater are improved.

Description

technical field [0001] The invention relates to the technical field of seawater detection, in particular to a fast peak-finding method for detecting radioactive substances in seawater. Background technique [0002] During the comprehensive measurement of marine radioactive substances, if there are corresponding radioactive substances, corresponding peaks will appear in the corresponding energy range. Due to the irregular drift of the peak of the detected radionuclide signal, a fast peak-finding method for seawater radioactivity detection can improve the efficiency of marine radioactivity measurement, which will become the core of the current development of domestic marine radioactivity measurement. The existing seawater radioactive environmental monitoring method is usually carried out on the laboratory platform, on the premise that the detection signal corresponding to the radioactive substance to be measured in seawater is stable or unchanged, and then, using the detected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/167
CPCG01T1/167
Inventor 刘东彦程岩吴丙伟袁达张云燕张颖张颖颖侯广利曹璐王昭玉王茜
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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