Pollution measuring instrument source search and positioning method, pollution measuring instrument, and device

Abstract

The present application discloses a method for source seeking and positioning of a pollution measuring instrument, which includes that a data acquisition and analysis system obtains the count data of each radiation detector in the pollution measuring instrument through the equipped communication module, and after obtaining each count data, matches each count data with the coordinates of each radiation detector to obtain a coordinate array. Among them, the pollution measuring instrument includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array. The data acquisition and analysis system performs Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface, locates the radiation source according to the Gaussian surface, and stores the positioning information of the radiation source after obtaining it. So that the source seeking and positioning method of the pollution measuring instrument disclosed in the present disclosure can give the radiation distribution on the premise of ensuring the original performance, and facilitate the user to quickly locate the position of the radiation source.

Description

Technical Field

[0001] The present disclosure relates to the field of radiation detection technology, and in particular, to a method for source searching and positioning of a contamination meter, a contamination meter, and a device. Background Art

[0002] Existing contamination meters all use an integral probe to give an overall estimate of the radiation level within the detection sensitive area, and cannot quickly locate the radiation source. In actual use, the user needs to continuously adjust the position of the instrument, and judge the position of the radiation source through the difference in the counting rate of the instrument at different positions. The actual positioning is very inconvenient; and due to the principle defect of the instrument design, within the sensitive area of the instrument, the detection efficiency of the same radioactive source at different positions varies greatly. The actual positioning also utilizes this point. The existing detection method gives an overall estimate of the radiation level within the detection sensitive area and cannot quickly search for and locate the source. Summary of the Invention

[0003] In view of this, the present disclosure proposes a method for source searching and positioning of a contamination meter, including:

[0004] The data acquisition and analysis system obtains the counting data of each radiation detector in the contamination meter through the equipped communication module; and after obtaining each of the counting data, matches each of the counting data with the coordinates of each radiation detector to obtain a coordinate array;

[0005] Wherein, the contamination meter includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array;

[0006] The data acquisition and analysis system performs Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface; locates the radiation source according to the Gaussian surface, and stores the positioning information of the radiation source after obtaining it;

[0007] Wherein, the data acquisition and analysis system also receives position data information through the equipped near-field communication module, and matches and stores the position data information with the current counting data.

[0008] In a possible implementation manner, matching the counting data with the coordinates of each radiation detector to obtain a coordinate array includes:

[0009] Obtain the coordinates of each radiation detector; wherein, the coordinates of the array detector are two-dimensional coordinates;

[0010] Add each of the counting data to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates;

[0011] Form a coordinate array with each of the three-dimensional coordinates.

[0012] In a possible implementation, when positioning the radiation source according to the Gaussian surface, the positioning is based on the number of vertices of the Gaussian surface; wherein, when positioning the radiation source according to the vertices of the Gaussian surface, it includes:

[0013] Obtain the number of vertices of the Gaussian surface, and determine the radiation detectors for positioning the radiation source according to the number of vertices.

[0014] In a possible implementation, determining the radiation detectors for positioning the radiation source according to the number of vertices includes:

[0015] If there is one vertex and the vertex corresponds to any one of the radiation detectors, determine the radiation detector for positioning the radiation source as the radiation detector corresponding to the vertex; wherein, the position of the radiation source is positioned below the radiation detector corresponding to the vertex.

[0016] In a possible implementation, determining the radiation detectors for positioning the radiation source according to the number of vertices includes:

[0017] If there are more than two vertices, determine the continuity of the more than two vertices, and determine the radiation detectors for positioning the radiation source based on the continuity of the more than two vertices.

[0018] In a possible implementation, determining the radiation detectors for positioning the radiation source based on the continuity of the more than two vertices includes:

[0019] If the more than two vertices are continuous, determine the radiation detectors for positioning the radiation source as the radiation detectors corresponding to each vertex; wherein, the position of the radiation source is positioned below the connection of the radiation detectors corresponding to each vertex;

[0020] If the more than two vertices are discontinuous, determine the radiation detectors for positioning the radiation source as the radiation detectors corresponding to each vertex; wherein, the position of the radiation source is positioned below the radiation detectors corresponding to each vertex respectively.

[0021] According to another aspect of the present disclosure, there is also provided a pollution measuring instrument, which is characterized by including: radiation detectors, fixing members and a data acquisition and analysis system, and can implement any one of the methods described above;

[0022] The number of the radiation detectors is multiple, and the multiple radiation detectors are arranged in the same plane and together form a detector group;

[0023] The fixing member fixedly holds the detector group as a whole;

[0024] Each of the radiation detectors is communicatively connected to the data acquisition and analysis system;

[0025] The data acquisition and analysis system is adapted to obtain the count data of each radiation detector and perform positioning of the radiation source based on the count data.

[0026] In a possible implementation manner, the radiation detector includes a scintillation crystal, a light guide device, and a photoelectric conversion device;

[0027] The light guide device has a cubic structure, the scintillation crystal is attached to the light guide device, and the photoelectric conversion device is fixedly arranged on the surface of the light guide device.

[0028] In a possible implementation manner, the fixing member includes an upper structural member and a lower structural member;

[0029] The upper structural member and the lower structural member are respectively arranged on opposite sides of the detector group, and on the opposite sides of the upper structural member and the lower structural member, there are blocking frames with the same structure. The blocking frames extend towards the opposite sides respectively, and the blocking frames surround the outside of the detector group.

[0030] According to another aspect of the present disclosure, there is also provided a pollution measuring instrument source seeking and positioning device, which is characterized by including:

[0031] A processor;

[0032] A memory for storing instructions executable by the processor;

[0033] Wherein, when the processor is configured to execute the executable instructions, it implements the method described in any one of the foregoing.

[0034] By obtaining the count data of each radiation detector in the pollution measuring instrument; wherein, the pollution measuring instrument includes a plurality of radiation detectors arranged in an array, matching each count data with the coordinates of each radiation detector to obtain a coordinate array, performing Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface, and positioning the radiation source according to the Gaussian surface. So that the pollution measuring instrument source seeking and positioning method of the present disclosure can give the radiation distribution on the premise of ensuring the original performance, facilitating the user to quickly locate the position of the radiation source.

[0035] According to the following detailed description of the exemplary embodiments with reference to the accompanying drawings, other features and aspects of the present disclosure will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings that are included in and form a part of the specification illustrate exemplary embodiments, features, and aspects of the present disclosure and are used to explain the principles of the present disclosure together with the specification.

[0037] Figure 1 Flowchart of the method for source location of a pollution measuring instrument showing an embodiment of the present disclosure;

[0038] Figure 2 First Gaussian schematic diagram of the method for source location of a pollution measuring instrument showing an embodiment of the present disclosure;

[0039] Figure 3 Second Gaussian schematic diagram of the method for source location of a pollution measuring instrument showing an embodiment of the present disclosure;

[0040] Figure 4 Third Gaussian schematic diagram of the method for source location of a pollution measuring instrument showing an embodiment of the present disclosure;

[0041] Figure 5 Block diagram of the pollution measuring instrument source location device showing an embodiment of the present disclosure;

[0042] Figure 6 Structural schematic diagram of the pollution measuring instrument showing an embodiment of the present disclosure. Detailed Description of the Invention

[0043] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0044] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0046] As used herein, the term "exemplary" means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" herein need not be construed as superior to or better than other embodiments.

[0047] In addition, for a better illustration of the present application, numerous specific details are given in the following detailed description. Those skilled in the art should understand that the present application can be implemented without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0048] Figure 1 The flowchart showing the method for source localization of a pollution meter according to an embodiment of the present disclosure is as follows. Figure 1 As shown, the method for source localization of the pollution meter includes:

[0049] Step S100, the data acquisition and analysis system obtains the count data of each radiation detector in the pollution meter through the equipped near-field communication module, step S200, and after obtaining each count data, matches each count data with the coordinates of each radiation detector to obtain a coordinate array, wherein the pollution meter includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array, step S300, the data acquisition and analysis system performs Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface, step S400, locates the radiation source according to the Gaussian surface, and stores the location information of the radiation source after obtaining it, step S500, wherein the data acquisition and analysis system also receives data information through the equipped near-field communication module, and matches and stores the data information with the current count data.

[0050] By the data acquisition and analysis system obtaining the count data of each radiation detector in the pollution meter through the equipped near-field communication module, and after obtaining each count data, matching each count data with the coordinates of each radiation detector to obtain a coordinate array, wherein the pollution meter includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array, step the data acquisition and analysis system performs Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface, locates the radiation source according to the Gaussian surface, and stores the location information of the radiation source after obtaining it. So that the method for source localization of the pollution meter of the present disclosure can give the radiation distribution on the premise of ensuring the original performance, facilitating the user to quickly locate the position of the radiation source.

[0051] Specifically, referring to Figure 1 , first execute step S100 to obtain the count data of each radiation detector.

[0052] In a possible implementation, multiple radiation detectors with similar performance are spliced together. Each radiation detector works independently. The multiple radiation detectors are arranged together and fixed. The output ports of the radiation detectors are connected to the corresponding interfaces of the data acquisition and analysis system. At the same time, the radiation detectors are positioned and encoded. When the detection is completed within the set time, the detection data of each radiation detector is obtained, including count data, which is the number of received radioactive particles. For example, the number of radiation detectors is nine, and the arrangement is 3×3. When the detection is completed, the count data of these nine radiation detectors is obtained, and the count data is converted from an analog signal to a digital signal, and the position information of each radiation detector is determined, that is, the coordinate information of each radiation detector is set, where the coordinate information is two-dimensional coordinates in the form of (X, Y).

[0053] It should be noted that the embodiments of the present disclosure do not limit the number of radiation detectors. The number and arrangement of radiation detectors can be set according to actual needs.

[0054] Further, execute Figure 1 , execute step S200, and match each count data with the coordinates of each radiation detector to obtain a coordinate array.

[0055] In a possible implementation, each radiation detector includes a two-dimensional coordinate. The obtained count data is matched with the coordinates of each radiation detector to obtain a coordinate array. Specifically, first, the coordinates of each radiation detector are obtained. Among them, the coordinates of the array detector are two-dimensional coordinates. Each count data is added to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates, and the three-dimensional coordinates form a coordinate array. The form of the coordinate array is the same as the connection form of the radiation detector. Exemplarily, if the radiation detectors are arranged in a 3×3 pattern, then the coordinate array is also a 3×3 array. In addition, adding each count data to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates further includes: adding the value of each count data as the Z-axis coordinate value to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates. For example, the number of radiation detectors is nine, and the arrangement is 3×3. The coordinates of these nine radiation detectors are successively: (X 1 , Y 1 ), (X 2 , Y 2 ), (X 3 , Y 3 ), (X 4 , Y 4 ), (X 5 , Y 5 ), (X 6 , Y 6 ), (X 7 , Y7 ), (X 8 , Y 8 ), (X 9 , Y 9 ), upon completion of the detection, obtain the count data of these nine radiation detectors, where the count data of these nine radiation detectors are sequentially and respectively: Z 1 , Z 2 , Z 3 , Z 4 , Z 5 , Z, Z, Z 8 , Z 9 , add these nine technical data to the coordinates of the corresponding radiation detectors, that is, add the values of each count data as the Z-axis coordinate value to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates. The obtained three-dimensional coordinates are respectively (X 1 , Y 1 , Z 1 ), (X 2 , Y 2 , Z 2 ), (X 3 , Y 3 , Z 3 ), (X 4 , Y 4 , Z 4 ), (X 5 , Y 5 , Z 5 ), (X 6 , Y 6 , Z 6 ), (X 7 , Y 7 , Z 7 ), (X 8 , Y 8 , Z 8 ), (X 9 , Y 9 , Z 9 ), arrange these nine three-dimensional coordinates in the positions of the corresponding radiation detectors, and thus the matching is completed to obtain a coordinate array.

[0056] Furthermore, execute Figure 1 , execute step S300, and perform Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface.

[0057] In a possible implementation manner, a software interface can be used to perform Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface, where the software interface includes one of python and Matlab. Exemplarily, if the coordinate array includes (X 1 , Y 1 , Z 1), (X 2 , Y 2 , Z 2 ), (X 3 , Y 3 , Z 3 ), (X 4 , Y 4 , Z 4 ), (X 5 , Y 5 , Z 5 ), (X 6 , Y 6 , Z 6 ), (X 7 , Y 7 , Z 7 ), (X 8 , Y 8 , Z 8 ), (X 9 , Y 9 , Z 9 ) These nine coordinates, taking the coordinate values of these nine coordinates as a data set, use Matlab for Gaussian fitting to obtain a Gaussian surface.

[0058] Further, refer to Figure 1 , perform step S400 to obtain the position of the radiation source according to the Gaussian surface.

[0059] In a possible implementation manner, when positioning the radiation source according to the Gaussian surface, it is positioned based on the number of vertices of the Gaussian surface. Among them, when positioning the radiation source according to the vertices of the Gaussian surface, it includes: obtaining the number of vertices of the Gaussian surface, and determining the radiation detector used for positioning the radiation source according to the number of vertices. Among them, determining the radiation detector used for positioning the radiation source according to the number of vertices needs to be analyzed according to the actual situation, including three cases, namely, the Gaussian surface has one vertex and drops rapidly at other positions, and the Gaussian surface includes more than two vertices and drops rapidly at other positions. Specifically, determining the radiation detector used for positioning the radiation source according to the number of vertices includes: when the vertex is one and the vertex is at the position corresponding to any of the radiation detectors, determining the radiation detector used for positioning the radiation source as the radiation detector corresponding to the vertex. Among them, the position of the radiation source is positioned below the radiation detector corresponding to the vertex.

[0060] Further, the radiation detectors for positioning the radiation source according to the number of vertices further include: when there are more than two vertices and the vertices are the positions corresponding to any radiation detectors, multiple corresponding radiation detectors are obtained based on the vertices, the positions of the multiple radiation detectors are acquired, and the radiation detectors for positioning the radiation source are determined based on the positions of the multiple radiation detectors. Further, when determining the radiation detectors for positioning the radiation source based on the positions of the multiple radiation detectors, two cases need to be discriminated, including: if the positions of more than two radiation detectors are continuous (the vertices are continuous), it is determined that the radiation source is a large-area radiation source or the radiation source is in the middle of the two radiation detectors, and the position of the radiation source is located below the multiple radiation detectors; if the positions of the multiple radiation detectors are not continuous, it is determined that there are multiple radiation sources, and the positions of the radiation sources are located below each radiation detector. For example, there are nine radiation detectors arranged and connected in a 3×3 form. After obtaining the Gaussian surface by performing Gaussian fitting on the coordinate array, the vertices of the Gaussian surface are obtained. If the Gaussian surface includes one vertex, and the radiation detectors decrease rapidly in the Gaussian surface in the order of the distance from the radiation source from near to far, and the vertex corresponds to the radiation detector at the position of (2, 3), it is determined that the position of the radiation source is below this radiation detector. If the obtained Gaussian surface includes two vertices, and the radiation detectors decrease rapidly in the Gaussian surface in the order of the distance from the radiation source from near to far, and these two vertices correspond to the radiation detectors at the positions of (2, 3) and (2, 1), and the positions of these two radiation detectors are adjacent, it is determined that the position of the radiation source is between the radiation detector at the position of (2, 3) and the radiation detector at the position of (2, 1), that is, below the connection of these two radiation detectors. If the obtained Gaussian surface includes more than two vertices, then it is further determined whether the positions of the radiation detectors corresponding to the more than two vertices are continuous. Exemplarily, if three vertices are obtained, and the radiation detectors decrease rapidly in the Gaussian surface in the order of the distance from the radiation source from near to far, and the positions of the radiation detectors corresponding to these three vertices are respectively: (1, 1), (1, 2), (1, 3), and these three radiation detectors are in the same row and adjacent, then these three radiation detectors are continuous. At this time, it can be determined that the radiation source is a large-area radiation source, and the position of the radiation source is below these three radiation detectors. In another case, the positions of the radiation detectors corresponding to these three vertices are respectively: (1, 1), (1, 3), (3, 3), and the radiation detectors decrease rapidly in the Gaussian surface in the order of the distance from the radiation source from near to far, and there are other radiation detectors between these three radiation detectors, then these three radiation detectors are not continuous. At this time, it can be determined that there are multiple radiation sources, and correspondingly, the positions of the radiation sources are respectively below these three radiation detectors. Through the above steps, the positions of multiple radiation sources or a single large-area radiation source can be quickly positioned.

[0061] To further illustrate the above algorithm, the following will take a 3×3 surface contamination meter as an example.

[0062] 1. There is a radiation source under only one radiation detector.

[0063] Assume that the radiation source is under radiation detector 5, and the coordinates of the radiation detector are (2, 2). A typical detection result is shown in Table 1.

[0064] Table 1

[0065]

[0066] After Gaussian fitting, its three-dimensional image is as Figure 3 shown. It can be clearly seen that there is only one vertex and it is located at the coordinates (2, 2), that is, under radiation detector 5, and the counts of the other radiation detectors drop rapidly.

[0067] 2. There is a radiation source under two adjacent detectors

[0068] Assume that the radiation source is under radiation detectors 5 and 6, and the coordinates of the radiation detectors are (2, 2) and (2, 3). A typical detection result is shown in Table 2.

[0069] Table 2

[0070]

[0071] After Gaussian fitting, its three-dimensional image is as Figure 4 shown. It can be clearly seen that there are two vertices and the straight line connecting the two vertices spans the coordinates (2, 2) and (2, 3), that is, the junction of radiation detectors 5 and 6, and the counts of the other detectors drop rapidly.

[0072] 3. There is a radiation source under two spaced detectors

[0073] Assume that the radiation source is under radiation detectors 1 and 6, and the coordinates of the radiation detectors are (1, 1) and (2, 3). A typical detection result is shown in Table 3.

[0074] Table 3

[0075]

[0076] After Gaussian fitting, its three-dimensional image is as Figure 4 shown. It can be clearly seen that there are two vertices and they are located at the coordinates (1, 1) and (2, 3), that is, under radiation detectors 1 and 6, and the counts of the other detectors drop rapidly.

[0077] 4. Multiple situations occur simultaneously

[0078] If there are multiple radiation sources that appear independently under a single radiation detector and at the connection point of multiple radiation detectors, the situation is a superposition of 1, 2, and 3, and the processing method is the same as 1, 2, and 3.

[0079] Furthermore, in step S500, the data collection and analysis system also receives position data information through the equipped near field communication module, and matches and stores the position data information with the current counting data.

[0080] In a possible implementation, the data acquisition and analysis system is connected to the near field communication module in communication. When the pollution measuring instrument detects, if the near field communication module receives data information, the received data information is matched and associated with the positioning information of the corresponding position, and stored in the storage medium. For example, when the pollution measuring instrument measures human clothing, if near field communication modules are configured at various positions of the clothing, for example, near field communication modules are provided on the left sleeve, right sleeve and back of the clothing, when the pollution measuring instrument performs surrounding measurement on the clothing, if it approaches the left sleeve, the near field communication module of the data acquisition and analysis system receives the data information in the near field communication module on the left sleeve, matches the data information with the counting data measured by the pollution measuring instrument at this time and stores it.

[0081] It should be noted that although the above steps are used as examples to introduce the pollution measurement instrument source location method disclosed above, those skilled in the art will understand that the present disclosure should not be limited thereto. In fact, the user can flexibly set the pollution measurement instrument source location method according to personal preferences and / or actual application scenarios, as long as the required function is achieved.

[0082] In this way, the data acquisition and analysis system obtains the count data of each radiation detector in the contamination measurement instrument through the equipped communication module, and after obtaining each count data, each count data is matched with the coordinates of each radiation detector to obtain a coordinate array, wherein the contamination measurement instrument includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array, and the step data acquisition and analysis system performs Gaussian fitting on the coordinate values ​​in the coordinate array to obtain a Gaussian surface, locates the radiation source according to the Gaussian surface, and stores the location information of the radiation source after obtaining it. In this way, the contamination measurement instrument source finding and positioning method disclosed in the present invention can give the radiation distribution while ensuring the original performance, so as to facilitate the user to quickly locate the position of the radiation source.

[0083] Furthermore, according to another aspect of the present disclosure, a pollution measuring instrument source locating device 200 is also provided. Figure 5, the source localization device 200 of the pollution measuring instrument according to the embodiments of the present disclosure includes a processor 210 and a memory 220 for storing executable instructions of the processor 210. Among them, the processor 210 is configured to implement the pollution measuring instrument source localization method described in any one of the foregoing when executing the executable instructions.

[0084] Here, it should be noted that the number of processors 210 can be one or more. At the same time, in the pollution measuring instrument source localization device 200 of the embodiments of the present disclosure, an input device 230 and an output device 240 may also be included. Among them, the processor 210, the memory 220, the input device 230, and the output device 240 can be connected through a bus or in other ways, and specific limitations are not made here.

[0085] As a computer-readable storage medium, the memory 220 can be used to store software programs, computer-executable programs, and various modules, such as: programs or modules corresponding to the pollution measuring instrument source localization method of the embodiments of the present disclosure. The processor 210 executes various functional applications and data processing of the pollution measuring instrument source localization device 200 by running the software programs or modules stored in the memory 220.

[0086] The input device 230 can be used to receive input numbers or signals. Among them, the signal can be a key signal related to the user settings and function control of the device / terminal / server. The output device 240 may include a display device such as a display screen.

[0087] Furthermore, according to another aspect of the present disclosure, a pollution measuring instrument 300 is also provided. Figure 6 The structural schematic diagram of the pollution measuring instrument 300 according to an embodiment of the present application is shown. As Figure 6 shown, the pollution measuring instrument 300 includes: a radiation detector 310, a fixing member, and a data acquisition and analysis system, which can implement the pollution measuring instrument source localization method of the present disclosure. Among them, the number of radiation detectors 310 is multiple, and the multiple radiation detectors 310 are arranged in the same plane, and there is a preset interval between adjacent radiation detectors 310, which together form a detector group. The fixing member fixedly fixes the detector group as a whole. A data line is connected between the radiation detector 310 and the data acquisition and analysis system. The data acquisition and analysis system acquires the count data of each radiation detector 310 and locates the radiation source according to the count data.

[0088] In this embodiment, multiple radiation detectors 310 are modularly integrated and spliced ​​into a detector group, which increases the detection area of ​​the device and is more conducive to expansion. The specific structure of the fixing member is not specifically limited here. It is only necessary to ensure that the fixing member can firmly place the detector group in the same plane, so that multiple radiation detectors 310 can obtain more accurate data, and reduce the unnecessary impact of height difference on the positioning of the radiation source. Each radiation detector 310 works independently. During actual measurement, the data is independently transmitted to the data acquisition and analysis system through the data line. The data acquisition and analysis system combines each detector to give the count and total count in the sensitive area of ​​each detection unit, that is, completes the detection of radiation distribution and the overall level of radiation. The test personnel in this field can quickly obtain the location of the radiation source and the approximate intensity of the radiation, and quickly locate the radiation source while ensuring the existing performance. The data line is not only used to transmit data to the information acquisition system, but also to power the radiation detector 310.

[0089] It should also be pointed out here that the data acquisition and analysis system can use a Gaussian fitting method to process the data transmitted by multiple radiation detectors 310. The radiation detector 310 with the largest count rate is located near the top of the Gaussian surface, and the calculations of the remaining radiation detectors 310 decrease rapidly on the Gaussian surface in order from near to far according to the distance to the radiation source, that is, a single radiation source can be quickly and accurately located.

[0090] In one specific embodiment, the radiation detector 310 includes a scintillation crystal, a photoconductive device and a photoelectric conversion device; the photoconductive device is a cubic structure, the scintillation crystal is attached to the lower part of the photoconductive device, and the photoelectric conversion device is fixedly arranged on the surface of the photoconductive device.

[0091] In this embodiment, the photoconductive device of the radiation detector 310 is configured as a cube structure. The cube structure radiation detector 310 is more conducive to modular assembly, and the cube structure is more convenient for mass production than other regular shapes, without increasing costs unnecessarily.

[0092] Furthermore, the radiation detector 310 is a prior art, and only a brief description is given herein. The α and β rays enter or pass through the double scintillation crystal, and deposit energy in the double scintillation crystal to make the crystal emit light. The light emitted by the double scintillation crystal passes through the photoconductive device and is transmitted to the silicon photomultiplier tube. The silicon photomultiplier tube converts the collected optical signal into an electrical signal, which is then processed by the subsequent circuit. Subsequently, the signal circuit transmits the converted electrical signal to the information collection system, and the information collection system then performs data integration and processing.

[0093] like Figure 6 As shown, in one specific embodiment, the number of radiation detectors 310 arranged in the horizontal and vertical directions is M×N.

[0094] In this embodiment, the M×N arrangement is the number of dual-flash detectors 1 arranged horizontally and vertically. After the production and assembly of the fixing member, the number of radiation detectors 310 that can be fixed inside it is determined. Without replacing or selecting other fixing members, M×N is the maximum capacity of radiation detectors 310 of this fixing member, with the largest detection area, making the surface contamination measuring instrument of this embodiment of the present application more beautiful and the structural design more reasonable.

[0095] As Figure 6 shown, in one specific embodiment, the fixing member includes an upper structural member 320 and a lower structural member 330; the upper structural member 320 and the lower structural member 330 are respectively arranged on opposite sides of the detector group, and the opposite sides of the upper structural member 320 and the lower structural member 330 are provided with blocking frames with the same structure, and the blocking frames extend towards the opposite sides respectively, and the blocking frames surround the outside of the detector group.

[0096] In this embodiment, the fixing member selects the detachable upper structural member 320 and lower structural member 330, and no specific limitation is made on the specific disassembly method, as long as it is ensured that the personnel in this field can easily disassemble and assemble the contamination measuring instrument 300. The blocking frames of the upper structural member 320 and the lower structural member 330 can be reasonably sleeved outside the detector group, and no specific limitation is made on the specific height of the blocking frame, as long as it is ensured that it can firmly fix the detector group and the detector group does not shake as a whole.

[0097] In one specific embodiment, a plurality of square holes of the same size are respectively opened at the corresponding positions of the upper structural member 320 and the lower structural member 330, and the top and bottom of each radiation detector 310 respectively correspond to a square hole.

[0098] In this embodiment, a plurality of square holes are opened on the upper structural member 320 and the lower structural member 330. The arrangement of the square holes on the upper structural member 320 is used to leave enough space for the data line to be connected to the radiation detector 310, avoiding problems such as difficult wiring of the equipment. Not only that, opening the square holes can also save materials and further reduce costs. Since an incident window is opened at the bottom of the radiation detector 310, the square holes of the lower structural member 330 do not block the incident window.

[0099] In one specific embodiment, a plurality of convex ribs are arranged inside the blocking frame of the lower structural member 330, and the convex ribs are arranged at the intervals of the square holes, and the convex ribs are arranged vertically and horizontally in a grid shape, and each grid matches the structure of the radiation detector 310.

[0100] In this embodiment, a plurality of vertically and horizontally cross-shaped convex ribs are arranged inside the blocking frame of the lower structural member 330, presenting a grid shape as a whole, and the convex ribs are arranged at the intervals of a plurality of square holes. The arrangement of the convex ribs is used to limit each radiation detector 310 to ensure that each radiation detector 310 only matches a corresponding set of grids up and down.

[0101] As Figure 6 shown, in one specific embodiment, extension ears are provided on both sides of the upper structural member 320 and the lower structural member 330, and mounting holes are equidistantly arranged on the extension ears.

[0102] In one specific embodiment, a through hole is provided on one side of the optical guide device adjacent to the upper structural member 320. One end of the data line is connected to the output port of the detector main body, and the other end of the data line passes through the through hole and is connected to the corresponding interface of the data acquisition and analysis system.

[0103] In one specific embodiment, the preset interval is less than 3 millimeters.

[0104] In this embodiment, to further reduce the influence of the preset interval on the rapid positioning of the radiation source when the radiation source is located between two adjacent radiation detectors 310, the preset interval between two adjacent radiation detectors 310 is limited to be less than 3 millimeters.

[0105] In one specific embodiment, the upper structural member 320 and the lower structural member 330 are bolt-connected.

[0106] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A method for source location of a pollution measuring instrument, characterized in that, it includes: The data acquisition and analysis system obtains the count data of each radiation detector in the pollution measuring instrument through the equipped communication module; And after obtaining each of the count data, match each of the count data with the coordinates of each of the radiation detectors to obtain a coordinate array; Wherein, the pollution measuring instrument includes a plurality of radiation detectors arranged in an array, and the plurality of radiation detectors are arranged in an array; The data acquisition and analysis system performs Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface; locate the radiation source according to the Gaussian surface, and store it after obtaining the location information of the radiation source; Wherein, the data acquisition and analysis system also receives position data information through the equipped near-field communication module, and matches and stores the position data information with the current count data; There are nine radiation detectors, arranged and connected in the form of 3×3. After performing Gaussian fitting on the coordinate array to obtain a Gaussian surface, obtain the vertex of the Gaussian surface; Perform Gaussian fitting on the coordinate values in the coordinate array to obtain a Gaussian surface. Among them, the software interface includes one of python and Matlab. When the coordinate array includes (X1, Y1, Z1), (X2, Y2, Z2), (X3, Y3, Z3), (X4, Y4, Z4), (X5, Y5, Z5), (X6, Y6, Z6), (X7, Y7, Z7), (X8, Y8, Z8), (X9, Y9, Z9) these nine coordinates, use these nine coordinate values as a data set, and use Matlab for Gaussian fitting to obtain a Gaussian surface; Obtain the number of vertices of the Gaussian surface, and determine the radiation detectors used for locating the radiation source according to the number of vertices.

2. The method according to claim 1, characterized in that, Matching the count data with the coordinates of each radiation detector to obtain a coordinate array includes: Obtain the coordinates of each radiation detector; wherein, the coordinates of the radiation detectors arranged in an array are two-dimensional coordinates; Add each of the count data to the coordinates of the corresponding radiation detector to obtain three-dimensional coordinates; Form a coordinate array with each of the three-dimensional coordinates.

3. The method according to claim 2, characterized in that, Determining the radiation detectors used for locating the radiation source according to the number of vertices includes: If the vertex is one and the vertex corresponds to any one of the radiation detectors, determine the radiation detector used for locating the radiation source as the radiation detector corresponding to the vertex; wherein, the position of the radiation source is located below the radiation detector corresponding to the vertex.

4. The method according to claim 3, characterized in that, Determining the radiation detectors used for locating the radiation source according to the number of vertices includes: If there are more than two vertices, determine the continuity of the more than two vertices, and determine the radiation detectors used for locating the radiation source based on the continuity of the more than two vertices.

5. The method according to claim 4, characterized in that, A radiation detector for positioning the radiation source is determined based on the continuity of two or more of the above-mentioned vertices, including: If two or more of the above-mentioned vertices are continuous, the radiation detector for positioning the radiation source is determined to be the radiation detectors corresponding to the respective vertices; wherein, the position of the radiation source is positioned below the connection of the radiation detectors corresponding to the respective vertices; If two or more of the above-mentioned vertices are discontinuous, the radiation detector for positioning the radiation source is determined to be the radiation detectors corresponding to the respective vertices; wherein, the position of the radiation source is positioned below the radiation detectors corresponding to the respective vertices respectively.

6. A contamination measuring instrument, Characterized in that, It includes: A radiation detector, a fixing member and a data acquisition and analysis system, capable of implementing the method according to any one of claims 1 to 5; The number of the radiation detectors is multiple, and the multiple radiation detectors are arranged in the same plane and together form a detector group; The fixing member integrally fixes the detector group; Each of the radiation detectors is communicatively connected to the data acquisition and analysis system; The data acquisition and analysis system is adapted to obtain the count data of each radiation detector and position the radiation source according to the count data.

7. The contamination measuring instrument according to claim 6, Characterized in that, The radiation detector includes a scintillation crystal, a light guide device and a photoelectric conversion device; The light guide device is of a cube structure, the scintillation crystal is attached to the light guide device, and the photoelectric conversion device is fixedly arranged on the surface of the light guide device.

8. The contamination measuring instrument according to claim 7, Characterized in that, The fixing member includes an upper structural member and a lower structural member; The upper structural member and the lower structural member are respectively arranged on opposite sides of the detector group, and blocking frames with the same structure are arranged on the opposite sides of the upper structural member and the lower structural member, and the blocking frames extend towards the opposite sides respectively, and the blocking frames surround the outside of the detector group.

9. A contamination measuring instrument source search and positioning device, Characterized in that, It includes: A processor; A memory for storing processor-executable instructions; Wherein, the processor is configured to implement the method according to any one of claims 1 to 5 when executing the executable instructions.

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