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Real-time detecting system and method for radioactive materials carried by personnel

A technology for real-time detection of radioactive substances, applied in the field of radiation detection, can solve the problems of high cost and poor real-time performance, and achieve the effect of low cost, good real-time performance, and accurate identification and alarm

Active Publication Date: 2015-04-29
BEIJING NOVEL MEDICAL EQUIP LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the above-mentioned technical problems of high cost or poor real-time performance. Therefore, the present invention proposes a real-time detection system and method for radioactive substances carried by personnel

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  • Real-time detecting system and method for radioactive materials carried by personnel
  • Real-time detecting system and method for radioactive materials carried by personnel
  • Real-time detecting system and method for radioactive materials carried by personnel

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0019] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the descrip...

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Abstract

The invention discloses a real-time detection system and method for radioactive materials carried by personnel. The real-time detection system has the advantages of low cost, good real-time performance and accurate recognition. The system comprises a gamma detector and a collimator, as well as a monocular visible light camera, an image fusion module, a distance identification module, an activity computation module, a historical equalization module and an alarm module, wherein the gamma detector is used for detecting incident gamma photon through the collimator, so as to obtain a two-dimensional radioactive source distribution diagram; the monocular visible light camera is used for obtaining two-dimensional optical images; the image fusion module is used for fusing the radioactive source distribution diagram and the two-dimensional optical images to be radioactive source optical fusion images; the distance identification module is used for deducting background information from the radioactive source optical fusion images, and recognizing a criminal suspect and then judging the distance r between a radioactive source carried by the criminal suspect and the gamma detector; the activity computation module is used for computing an activity value A; the historical equalization module is used for taking front and continuous N-frame images at a current moment so as to calculate out the median of N activity values, and take the calculated median as an activity value A of the radioactive source at the current moment; the alarm module is used for acousto-optic electricity Alarming when the A excesses a preset threshold value.

Description

technical field [0001] The invention relates to the technical field of radiation detection, in particular to a real-time detection system and method for radioactive substances carried by personnel. Background technique [0002] The radioactive source positioning system has a wide range of applications in the fields of nuclear industry, nuclear safety, environmental protection, industrial and medical radioactive source management, and public safety. Traditional detection methods for radioactive sources mainly include: dosimeters, gamma spectrometers and gamma detectors. Among them, the gamma detector realizes the two-dimensional planar distribution imaging and energy spectrum of the radioactive source by detecting the gamma photons collimated by the collimator. Usually the gamma detector is also integrated with the visible light camera, and the visible light image is fused with the two-dimensional distribution image reflecting the radioactive source to realize the visualized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/29
Inventor 陈思高丽蕾马天予刘亚强王石刘迈
Owner BEIJING NOVEL MEDICAL EQUIP LTD
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