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Temperature drift self-correction method of sea radioactivity measurement sensor, and sensor

A radioactivity measurement and sensor technology, applied in the X-ray energy spectrum distribution measurement, etc., can solve the problems of reference source reference peak position drift, affecting the sensor spectrum stability results, etc., and achieve the effect of reliable monitoring results

Active Publication Date: 2016-05-11
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology

However, these reference sources themselves are also affected by temperature, causing the reference peak position of the reference source to drift, which in turn affects the spectrum stabilization results of the sensor

Method used

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  • Temperature drift self-correction method of sea radioactivity measurement sensor, and sensor
  • Temperature drift self-correction method of sea radioactivity measurement sensor, and sensor
  • Temperature drift self-correction method of sea radioactivity measurement sensor, and sensor

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Embodiment Construction

[0026] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] In order to solve the problem of drifting of the peak position of the gamma spectrum data generated by the sensor due to its own temperature change, the marine radioactivity measurement sensor of this embodiment proposes a method of adjusting the amplification gain of the sensor according to the temperature change of the sensor. , So that the amplitude of the generated pulse voltage can be automatically adjusted according to the temperature change of the sensor. By adjusting the amplitude of the pulse voltage generated by the sensor to the amplitude of the corresponding pulse voltage when the sensor measures the same radionuclide at the reference temperature, when the pulse voltage generated by the sensor is used for energy calibration, It can correspond to the correct track address, realize the correction of the gamma spectrum peak drif...

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Abstract

The invention discloses a temperature drift self-correction method of a sea radioactivity measurement sensor, and a sensor. A temperature-sensitive element is additionally arranged on the sensor, the temperature of the sensor is detected through the temperature-sensitive element, the amplification gain of the sensor is automatically adjusted according to temperature change of the sensor, and amplitude of pulse voltages generated by the sensor is adjusted to the amplitude of pulse voltages generated when the sensor measures the same radionuclide at a reference temperature, such that peak drift of gamma energy spectrum data generated by the sensor can be automatically corrected and a more accurate detection result can be obtained. By using the sensor provided by the invention, the activity of such radionuclide as seawater, seabed sediment, marine organisms and the like in a sea environment can be automatically and continuously monitored for long time and a stable reliable monitoring result can also be obtained; and the method and the sensor can also be suitable for various sea automatic monitoring platforms and can be promoted and applied to the radioactivity monitoring work process of other water body environments.

Description

Technical field [0001] The invention belongs to the technical field of marine radioactivity measurement, and specifically relates to a measuring device used for on-site detection of marine radioactivity. Background technique [0002] my country's marine radioactivity monitoring still remains in the traditional way of on-site sampling and bringing it back to the laboratory for testing. The procedures are cumbersome and time-consuming. More importantly, this intermittent detection mode cannot effectively monitor the radioactivity in the ocean, and it is even more difficult to provide timely warning of pollution. [0003] The gamma spectrometer based on NaI(Tl) scintillator design has the advantages of high detection efficiency, wide applicable temperature range, stable performance, low cost and low power consumption. It is used in environmental radioactivity measurement, industrial online nuclear measurement and control, mining and nuclear protection safety, etc. The field has a wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36
CPCG01T1/36
Inventor 张颖颖张颖刘东彦吴丙伟胡云川孔祥峰赵阳程岩王昭玉王茜郭翠莲刘岩吴宁张述伟张丽
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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