Radioactive source positioning method and system

Abstract

The invention discloses a radioactive source positioning method and system. The method includes the steps: setting initialization; performing nuclear radiation detection for radiation sources at a plurality of detection points by the aid of a plurality of mobile communication terminals; acquiring nuclear radiation dose information, position information and time information of the detection points; judging whether to give an alarm or not and whether the radiation sources move or not according to the nuclear radiation dose information; respectively positioning the fixed radiation sources and the movable radiation sources. Portable functions such as radioactivity detection and analysis are integrated into the mobile communication terminals which are separated from traditional professional devices based on electronic tags, robots and the like, the radiation sources are positioned in a cost-effective manner through a man-machine fusion method in a group environment, and the radioactive source positioning method is low in cost, wide in detection range and convenient to popularize.

Description

technical field [0001] The invention relates to the technical field of radioactive material detection, in particular to a radioactive source positioning method and system. Background technique [0002] With the rapid development of nuclear energy development and comprehensive utilization of nuclear technology, there are more and more nuclear-related facilities, nuclear-related industries and people, and nuclear emergency, nuclear decommissioning, nuclear safety and nuclear protection are becoming more and more important; by the end of 2014, more than 500 nuclear Among the reactors, 123 have been operating for more than 30 years, and 12 have been operating for more than 40 years. At the same time, there are about 70,000 to 80,000 radioactive sources of various types used in radioisotopes and radiation technology in my country, of which about 25,000 are waste sources. There are more than 2,000 "lost orphan sources". Due to economic constraints and the popularization of nuclear k...

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Problems solved by technology

[0002] With the rapid development of nuclear energy development and comprehensive utilization of nuclear technology, there are more and more nuclear-related facilities, nuclear-related industries and people, and nuclear emergency, nuclear decommissioning, nuclear safety and nuclear protection are becoming more and more important; by the end of 2014, more than 500 nuclear Among the reactors, 123 have been operating for more than 30 years, and 12 have been operating for more than 40 years. At the same time, there are about 70,000 to 80,000 radioactive sources of various types used in radioisotopes and radiation technology in my country, of which about 25,000 are waste sources. There are more than 2,000 "lost orphan sources". Due to economic constraints and the popularization of nuclear knowledge, it is impossible for every citizen to be equipped with expensive professional nuclear radiation detectors, and the transitional ionizing radiation will be fatal to human beings. Therefore, when the radioactive nucleus leaks or the radioactive source is lost, and the potential harm continues to expand, the public tends to be extremely panicked

For example, in 2014, after a certain radioactive source was lost in a certain place in China, it was picked up by citizens, causing the body to be damaged by radiation. The society was extremely panicked, and the work of relevant professional units also lacked timely and effective guarantee facilities; The existence of dose rate, as well as understanding the cumulative dose of radiation exposure from the perspective of health protection, and improving the level of radiation protection under group defense and group control are urgent problems to be solved

[0003] At present, radioactive source detection and positioning devices in the domestic and foreign markets can be roughly divided into two types: monitoring, positioning, and tracking devices for known radioactive sources and detection and positioning devices for unknown sources; This type of device needs to install a positioning terminal that solidifies active archive information on the radioactive source, such as RFID electronic tags, GSM cards, etc., read the source information through the front-end reader, and then perform positioning through wireless communication, GPS positioning and other technologies; obviously, This type of device is not suitable for locating unknown sources and wastes resources to a certain extent; for example, the patent application number 200810156538.6 relates to a device for detecting and locating unknown sources based on mobile machines. Front-end detection equipment such as advanced detectors and gamma cameras conduct nuclear radiation detection, and then use wired and wireless communication technologies to locate radioactive sources; this type of device is suitable for conditions such as harsh operating environments, and has a large volume for the general public. Huge, expensive and other factors are not easy to popularize, and the detection range is limited; the patent application number 20130602906.6 provides a method to locate the radioactive source based on the relationship between the crystal count ratio and the radioactive source angle in the crystal array of the detector obtained from analog data; The equipment requires highly professional technicians as operators to operate the detection system, and the method of radioactive source positioning has large errors, and the equipment is expensive, which is inconvenient for popularization and application

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