Radioactive source positioning information acquisition device

Abstract

The utility model relates to the technical field of nuclear radiation detection, and particularly discloses a radioactive source positioning information acquisition device, which comprises a radioactive ray isolation base, a detector, a laser range finder, a numerical control angle adjustment base, a preamplifier, a main amplifier, a multichannel analyzer, a microcontroller module and a wireless communication module, the radioactive ray isolation base is a regular polyhedron, a regular prism or a sphere, the detectors are located in the center of the peripheral face of the base, all-directional radiation measurement of the located area can be achieved, the direction angle of a radioactive source relative to the detectors is obtained according to counting of the detectors, angle data are transmitted to the micro-control module, and the numerical control angle adjusting base is adjusted. The distance between the radioactive source and the detector is measured through the laser range finder, and acquisition of related three-dimensional positioning information of the radioactive source is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear radiation detection, in particular to a device for collecting radioactive source positioning information. Background Art

[0002] With the continuous development of nuclear technology, various radioactive sources and radioactive substances are increasingly widely used in the fields of scientific research, industry, agriculture, medicine, etc. However, the loss of radioactive sources due to improper management occurs from time to time, and due to limited people's understanding, it is easy to cause social panic. After the loss of a radioactive source or radioactive substance, in order to quickly and accurately locate the radioactive substance, a large amount of manpower and material resources need to be mobilized. Therefore, an information collection device developed to minimize the irradiation dose of emergency personnel and achieve long-distance radioactive substance positioning is particularly important.

[0003] There are mainly three types of existing devices for collecting radioactive source positioning information. The first method is an information collection device based on the counting and position relationship of detectors. Usually, multiple detectors are used to collect counting and position information, providing data support for reconstructing the radiation field and locating the radioactive source. However, to improve the detection efficiency, a large number of measurement points are required, which takes a long time. Moreover, the closer to the radioactive source, the higher the data value, but the greater the irradiation dose to the measurement personnel. The second method is an information collection device based on a gamma camera. By focusing the gamma camera and the optical camera, the collection of information related to radioactive source positioning is realized. However, the information collection field of view is small, the efficiency is low, and in order to improve the collection efficiency, focusing needs to be performed every time the scene is changed, which is not convenient to operate. The third method is a radioactive source positioning information collection device based on a directional detector, which can collect the positioning information of the radioactive source at a certain distance, reducing the exposure time of the source search personnel. It is a safe and efficient source search method, such as a collimator, a three-crystal coupled detector, a four-unit NaI crystal directional detector, etc. Specifically, it is through multiple collections of multiple directional detectors, and the operation is relatively cumbersome, with large systematic errors and human errors, bringing great trouble to subsequent data processing. Therefore, it is necessary to propose a collection device that can collect the information required for radioactive source positioning through one measurement. Content of the Utility Model

[0004] The device for collecting radioactive source positioning information of the utility model adopts a multi-detector symmetric structure, the included angle between each pair of adjacent detectors is equal, and a laser rangefinder is arranged at the center position of the symmetry axis. According to the count of each detector, the direction angle of the radioactive source relative to the detector can be obtained, and the laser rangefinder is controlled to deflect at the corresponding angle to obtain the distance between the radioactive source and the radiation detector, thereby realizing the collection of the information required for radioactive source positioning.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A radioactive source positioning information acquisition device, comprising: a radioactive ray isolation base, a detector, a laser rangefinder, a numerically controlled angle adjustment base, a preamplifier, a main amplifier, a multi-channel analyzer, a microcontroller module, a wireless communication module, characterized in that:

[0006] The number of the detectors is n, and n≥4. The detectors are arranged on the radioactive ray isolation base, and the installation angles between each pair of adjacent detectors are equal and separated by the radioactive ray isolation base;

[0007] The laser rangefinder is arranged on the numerically controlled angle adjustment base and then arranged on the radioactive ray isolation base and at the center position of the symmetry axis between each pair of detectors;

[0008] The preamplifier, the main amplifier, the multi-channel analyzer, the microcontroller module, and the wireless communication module are arranged in the cavity of the radioactive ray isolation base;

[0009] The detector is electrically connected to the microcontroller module through the preamplifier, the main amplifier, and the multi-channel analyzer;

[0010] The laser rangefinder, the numerically controlled angle adjustment base, and the wireless communication module are electrically connected to the microcontroller module.

[0011] Preferably, the radioactive ray isolation base is a regular polyhedron, a regular prism, or a sphere.

[0012] Preferably, the numerically controlled angle adjustment base includes a base, a rotating shaft, a drive system, and an angle sensor.

[0013] Preferably, the detector is a gamma spectrometer and / or a neutron detector.

[0014] Preferably, the gamma spectrometer is a high-purity germanium detector (HPGe) or a sodium iodide scintillation detector (NaI).

[0015] Preferably, the neutron detector is a helium-3 (He-3) detector or a boron-10 (B-10) detector.

[0016] Preferably, the multi-channel analyzer is a semiconductor detector multi-channel analyzer or a scintillation detector multi-channel analyzer.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. Through the three-dimensional arrangement of multiple detectors and the assistance of the laser rangefinder, the acquisition of the information required for radioactive source positioning is completed in one measurement.

[0019] 2. The use of the radioactive ray isolation base effectively isolates the radiation interference between different detectors, ensuring the independence and measurement accuracy of each detector. The isolation base can shield unnecessary external radiation and provide a cleaner measurement environment.

[0020] 3. The laser rangefinder is installed on the numerically controlled angle adjustment base, enabling accurate angle adjustment and precise measurement of the distance between the detector and the target. The numerically controlled angle adjustment base ensures the stability and accuracy of the detector during the measurement process, facilitating the accurate positioning and tracking of the radiation source.

[0021] 4. The combination of signal processing modules such as the preamplifier, main amplifier, and multi-channel analyzer ensures that the radiation signals received from the detector are amplified and processed to obtain accurate energy spectrum data. These signal processing modules are placed in the cavity of the radioactive ray isolation base, reducing external interference and improving the efficiency and accuracy of signal processing. Brief Description of the Drawings

[0022] Figure 1 It is the front view structural schematic diagram of the embodiment of the present utility model.

[0023] Figure 2 It is the top view structural schematic diagram of the embodiment of the present utility model.

[0024] In the figure: 1. Radioactive ray isolation base, 2. Detector, 3. Laser rangefinder, 4. Numerically controlled angle adjustment base, 5. Preamplifier, 6. Main amplifier, 7. Multi-channel analyzer, 8. Microcontroller module, 9. Wireless communication module. Detailed Embodiment

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment

[0027] As shown in the attached Figure 1 、 2 figure: A radiation source positioning information acquisition device includes: a radioactive ray isolation base 1, a detector 2, a laser rangefinder 3, a numerically controlled angle adjustment base 4, a preamplifier 5, a main amplifier 6, a multi-channel analyzer 7, a microcontroller module 8, and a wireless communication module 9, and is characterized in that:

[0028] The number of the detectors 2 is n, and n = 6. The detectors 2 are arranged on the radioactive ray isolation base 1, and the arrangement angles between each pair of detectors 2 are equal and separated by the radioactive ray isolation base 1;

[0029] The described laser rangefinder 3 is arranged on the numerically controlled angle adjustment base 4, and then arranged on the radioactive ray isolation base 1 and at the center position of the symmetry axis between each pair of detectors 2;

[0030] The described preamplifier 5, main amplifier 6, multi-channel analyzer 7, microcontroller module 8, and wireless communication module 9 are arranged in the cavity of the radioactive ray isolation base 1;

[0031] The detector 2 is electrically connected to the microcontroller module 8 through the preamplifier 5, main amplifier 6, and multi-channel analyzer 7;

[0032] The described laser rangefinder 3, numerically controlled angle adjustment base 4, and wireless communication module 9 are electrically connected to the microcontroller module 8.

[0033] This embodiment is the most basic implementation manner. In this embodiment, after the power is turned on, 4 detectors 2 work simultaneously. The detectors 2 convert photons or electrons generated by the rays into electrical signals and transmit them to the preamplifier 5. The preamplifier 5 amplifies the weak primary signal to ensure that the signal is not interfered during transmission, and then transmits it to the main amplifier 6. The main amplifier 6 further amplifies and shapes the signal to ensure that the signal has an amplitude and shape suitable for analysis. The main amplifier 6 transmits the signal to the multi-channel analyzer 7 again. The multi-channel analyzer 7 classifies and counts the signals according to energy, and transmits the energy spectrum data generated by each detector 2 to the microcontroller module 8. The microcontroller module 8 transmits the obtained angle information to control the laser rangefinder 3 according to the relationship between the counts of each detector and the direction angle, and controls it to deflect at the corresponding angle for ranging. The microcontroller module 8 then transmits the count information, energy spectrum information, ranging data, and angle data of each detector to an external device through the wireless communication module 9 for accurate positioning of the radiation source and nuclide identification.

[0034] The above embodiments are provided only for the purpose of describing the present invention, and do not limit the scope of the present invention. All equivalent substitutions and modifications made without departing from the spirit and principle of the present invention shall be covered within the scope of the present invention.

Claims

1. A radioactive source positioning information acquisition device, comprising: Radioactive ray isolation base, detector, laser rangefinder, numerically controlled angle adjustment base, preamplifier, main amplifier, multichannel analyzer, microcontroller module, wireless communication module, characterized in that: The number of the detectors is n, and n≥4. The detectors are arranged at the center of the circumferential surface of the radioactive ray isolation base. The installation angle between each pair of adjacent detectors is equal and is separated by the radioactive ray isolation base; The laser rangefinder is installed on the numerically controlled angle adjustment base and then installed on the radioactive ray isolation base and at the center position of the symmetry axis between each pair of detectors; The preamplifier, main amplifier, multichannel analyzer, microcontroller module, and wireless communication module are installed in the cavity of the radioactive ray isolation base; The detectors are electrically connected to the microcontroller module through the preamplifier, main amplifier, and multichannel analyzer; The laser rangefinder, numerically controlled angle adjustment base, and wireless communication module are electrically connected to the microcontroller module.

2. The radioactive source positioning information acquisition device according to claim 1, characterized in that: The radioactive ray isolation base is a regular polyhedron, regular prism, or sphere.

3. The radioactive source positioning information acquisition device according to claim 1, wherein: The numerically controlled angle adjustment base includes a base, a rotating shaft, a drive system, and an angle sensor.

4. The radioactive source positioning information acquisition device according to claim 1, wherein: The detector is a gamma spectrometer and / or a neutron detector.

5. The radioactive source positioning information acquisition device according to claim 1, characterized in that: The multichannel analyzer is a semiconductor detector multichannel analyzer or a scintillation detector multichannel analyzer.

6. The radioactive source positioning information acquisition device according to claim 4, wherein: The gamma spectrometer is a high-purity germanium detector or a sodium iodide scintillation detector.

7. The radioactive source location information acquisition device according to claim 4, characterized in that: The neutron detector is a helium-3 detector or a boron-10 detector.

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