Method and device for deducting cosmic rays in real time in environmental radiation monitoring

Abstract

The invention relates to a method and a device for deducting cosmic rays in real time in environmental radiation monitoring. The method comprises the following steps: constructing a first linear equation of a background dose equivalent rate about an environmental dose equivalent rate and a cosmic ray dose equivalent rate; acquiring a plurality of radiation dose rates in the environment measured by the plurality of detectors at the current moment; constructing a plurality of second linear equations of radiation dose rates with respect to cosmic ray dose equivalent rates; determining a background dose equivalent rate based on simultaneous equation and equation set; simultaneous operation is carried out on the second linear equation set, and the cosmic ray dose equivalent rate is determined; and deducting the cosmic ray dose equivalent rate at the current moment based on the first linear equation and the background dose equivalent rate, and determining the environmental dose equivalent rate. According to the invention, the dose equivalent rate generated by the cosmic rays in real time is calculated, and the dose equivalent rate of the cosmic rays is deducted in real time, so that the technical effects of improving an original constant value into the dose equivalent rate of the cosmic rays generated in real time and reducing the deviation of the environmental dose rate equivalent are achieved.

Description

Technical Field

[0001] This invention relates to the field of environmental radiation monitoring technology, and in particular to a method and apparatus for real-time subtraction of cosmic rays in environmental radiation monitoring. Background Technology

[0002] With the increasingly widespread application of nuclear energy, regulatory agencies have placed higher demands on radiation environment monitoring and supervision capabilities. Gamma radiation dose rate monitoring is a crucial component of radiation environment monitoring, widely used in scenarios such as nuclear power plant early warning monitoring and radiation environment status surveys. According to the "Technical Specification for Measurement of Environmental Gamma Radiation Dose Rate" (HJ 1157-2021), the instrument's response to cosmic rays should be subtracted when measuring environmental gamma radiation dose rate.

[0003] Traditional measurement methods, following the "Technical Specifications for Measurement of Ambient Gamma Radiation Dose Rate," select freshwater lakes with a depth greater than 3 meters and a distance from the shore greater than 1 km as measurement points. Small boats are used to carry commonly used radiation monitoring instruments, such as high-pressure ionization chambers and plastic scintillator detectors. The response of the instruments to cosmic rays at the water surface is measured. The dose equivalent rate of the instruments at the land measurement point to cosmic rays is calculated using empirical formulas from the UNSCEAR 2000 report. This dose equivalent rate (a constant) is then used as the dose equivalent rate of cosmic rays subtracted in subsequent measurements. The ambient gamma radiation dose rate is obtained by subtracting the dose equivalent rate of cosmic rays from the measured value. However, because cosmic rays are significantly affected by latitude, longitude, altitude, air pressure, and temperature, and different measuring instruments vary in detectors, electronic processing methods, and response times, their dose equivalent rates to cosmic rays differ in different radiation fields. Using a constant value as the dose equivalent rate of cosmic rays in the measurement process results in significant deviations in the ambient gamma radiation dose rates obtained from multiple experiments.

[0004] In related technologies, a pre-prepared dose equivalent rate of cosmic rays is used as the response value required for multiple measurements, resulting in a large error in the final environmental gamma radiation dose rate.

[0005] The above problems urgently need to be addressed. Summary of the Invention

[0006] This invention discloses a method and apparatus for real-time subtraction of cosmic rays in environmental radiation monitoring, aiming to solve the technical problems existing in the prior art.

[0007] The present invention adopts the following technical solution: On one hand, the present invention provides a method for real-time subtraction of cosmic rays in environmental radiation monitoring, comprising: constructing a first linear equation of the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; obtaining multiple radiation dose rates measured by multiple detectors in the current environment at the current moment, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates; constructing a second set of linear equations of the multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of multiple radiation dose rates; determining the background dose equivalent rate in the current environment by simultaneously solving the first linear equation and the second set of linear equations; solving the second set of linear equations to determine the cosmic ray dose equivalent rate in the current environment; and subtracting the cosmic ray dose equivalent rate at the current moment from the first linear equation and the background dose equivalent rate to determine the environmental dose equivalent rate in the current environment.

[0008] Optionally, a first linear equation is constructed for the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate. The first linear equation is as follows: in, The background dose equivalent rate, Environmental dose equivalent rate, This represents the cosmic ray dose equivalent rate.

[0009] Optionally, constructing a second set of linear equations for the plurality of radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate includes: determining a plurality of cosmic ray responses based on the plurality of detectors being located in a cosmic ray laboratory; determining a plurality of environmental radiation responses based on the plurality of detectors being located in a cosmic ray laboratory; determining the inherent background corresponding to each of the plurality of detectors; and constructing a second set of linear equations with respect to the cosmic ray dose equivalent rate based on the plurality of radiation dose rates, the plurality of cosmic ray responses, the plurality of environmental radiation responses, and the plurality of inherent backgrounds.

[0010] Optionally, determining multiple cosmic ray responses based on the multiple detectors being in a cosmic ray laboratory includes: constructing a standard cosmic ray simulation field; placing the multiple detectors within the standard cosmic ray simulation field; determining first readings corresponding to each of the multiple detectors; obtaining a first conventional truth value corresponding to the standard cosmic ray simulation field; and determining the multiple cosmic ray responses based on the ratios of the multiple first readings to the first conventional truth value.

[0011] Optionally, based on multiple radiation dose rates, multiple cosmic ray responses, multiple environmental radiation responses, and multiple intrinsic backgrounds, a second set of linear equations concerning the cosmic ray dose equivalent rate is constructed, as follows: Among them, R A TR R is the ambient radiation response measured by detector A. B TR R represents the ambient radiation response measured by detector B. A SCR The cosmic ray response determined by detector A; R B SCR The cosmic ray response is based on detector B; This represents the inherent background of detector A; This represents the inherent background of detector B; The radiation dose rate measured by detector A; This represents the radiation dose rate measured by detector B.

[0012] Optionally, based on the simultaneous equations of the first and second linear equations, the background dose equivalent rate in the current environment is determined, and the background dose equivalent rate is calculated as follows: in, The background dose equivalent rate, Environmental dose equivalent rate, R is the cosmic ray dose equivalent rate. A TR R is the ambient radiation response measured by detector A. B TR R is the ambient radiation response measured by detector B. A SCR R represents the cosmic ray response measured by detector A. B SCR The cosmic ray response measured by detector B. This represents the inherent background of detector B; The radiation dose rate measured by detector A; The radiation dose rate measured by detector B.

[0013] Optionally, the second system of linear equations can be solved simultaneously to determine the cosmic ray dose equivalent rate under the current environmental conditions. The cosmic ray dose equivalent rate is calculated as follows: in, R is the cosmic ray dose equivalent rate.A TR R is the ambient radiation response measured by detector A. B TR R is the ambient radiation response measured by detector B. A SCR R represents the cosmic ray response measured by detector A. B SCR The cosmic ray response measured by detector B. This represents the inherent background of detector A; This represents the inherent background of detector B; The radiation dose rate measured by detector A; The radiation dose rate measured by detector B.

[0014] According to another aspect of the present invention, an apparatus for real-time subtraction of cosmic rays in environmental radiation monitoring is also provided, comprising: an equation construction module for constructing a first linear equation of background dose equivalent rate with respect to environmental dose equivalent rate and cosmic ray dose equivalent rate; a radiation dose rate acquisition module for acquiring multiple radiation dose rates measured by multiple detectors in the current environment at the current moment, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates; an equation set construction module for constructing a second linear equation set of the multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second linear equation set is the same as the number of multiple radiation dose rates; a simultaneous equation module for determining the background dose equivalent rate in the current environment based on the simultaneous equation of the first linear equation and the second linear equation set; a solution module for solving the simultaneous equation set of the second linear equation to determine the cosmic ray dose equivalent rate in the current environment; and a real-time subtraction module for subtracting the cosmic ray dose equivalent rate in the current environment based on the first linear equation and the background dose equivalent rate to determine the environmental dose equivalent rate in the current environment.

[0015] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium storing a plurality of instructions adapted for loading by a processor and executing any one of the methods for real-time subtraction of cosmic rays in environmental radiation monitoring.

[0016] According to another aspect of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps of a method for real-time subtraction of cosmic rays in environmental radiation monitoring as described in any one of the present invention.

[0017] The technical solution adopted in this invention can achieve at least one of the following beneficial effects: In this embodiment of the invention, a first linear equation is constructed regarding the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; multiple radiation dose rates measured by multiple detectors in the current environment are obtained, wherein the number of detectors is the same as the number of radiation dose rates; a second set of linear equations is constructed regarding the multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of radiation dose rates; the background dose equivalent rate in the current environment is determined by simultaneously solving the first linear equation and the second set of linear equations; and the current environment is determined by simultaneously solving the second set of linear equations. The cosmic ray dose equivalent rate in the environment; based on the first linear equation and the background dose equivalent rate, the cosmic ray dose equivalent rate at the current moment is subtracted to determine the environmental dose equivalent rate in the current environment. This achieves the purpose of calculating the real-time dose equivalent rate generated by cosmic rays at the current moment and subtracting the cosmic ray dose equivalent rate in real time. This realizes the technical effect of converting the originally fixed cosmic ray dose equivalent rate into the real-time generated cosmic ray dose equivalent rate, reducing the deviation of the environmental dose equivalent rate obtained in multiple experiments. In turn, it solves the technical problem that in related technologies, the use of a pre-prepared dose equivalent rate generated by cosmic rays as the response value required for multiple measurements leads to a large error in the final environmental gamma radiation dose rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of the present invention. The illustrative embodiments of the present invention and their descriptions explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a flowchart of a method for real-time subtraction of cosmic rays in environmental radiation monitoring according to Embodiment 1 of the present invention; Figure 2 This is a flowchart of an optional method for real-time subtraction of cosmic rays in environmental radiation monitoring according to Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the device for real-time subtraction of cosmic rays in environmental radiation monitoring in Embodiment 3 of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly indicated.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0021] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] First, to facilitate understanding of the embodiments of the present invention, some terms or nouns involved in the present invention will be explained below: Cosmic rays are high-energy streams of charged particles originating from outer space, primarily composed of protons (approximately 89%), helium nuclei (alpha particles, approximately 10%), and small amounts of heavy ions, electrons, and gamma rays. They travel through the universe at near the speed of light, with energies ranging from millions of electron volts (MeV) to over 10⁻⁶. 20 Electron volt (eV) is one of the highest energy particles in nature.

[0023] To address the problems existing in related technologies, this application provides a method and apparatus for real-time subtraction of cosmic rays in environmental radiation monitoring.

[0024] Example 1 This embodiment provides a method for real-time subtraction of cosmic rays in environmental radiation monitoring, such as... Figure 1 As shown, Figure 1 This is a flowchart of a method for real-time subtraction of cosmic rays in environmental radiation monitoring according to Embodiment 1 of the present invention. The method includes: Step S102: Construct the first linear equation of the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; Optional, background dose equivalent rate in the natural environment ( This mainly includes environmental dose equivalent rate ( ) and the cosmic ray dose equivalent rate generated by cosmic rays ( Environmental dose equivalent rate is mainly generated by natural radionuclides contained in soil, plants and building materials, and is also a key focus of radiation environment monitoring; cosmic ray dose equivalent rate is mainly emitted by charged particles generated by the decay of primary cosmic rays.

[0025] In some preferred embodiments, a first linear equation is constructed for the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate. The first linear equation is as follows: in, The background dose equivalent rate, Environmental dose equivalent rate, This represents the cosmic ray dose equivalent rate.

[0026] Step S104: Obtain multiple radiation dose rates in the current environment as measured by multiple detectors, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates. Optionally, to subtract the cosmic ray dose equivalent rate in real time, it is necessary to first obtain the radiation dose rate at the current moment. Based on the radiation dose rate, the background dose equivalent rate is determined, and the current cosmic ray dose equivalent rate can be subtracted, enabling effective real-time subtraction. All the above data are calculated from data measured at the current moment, effectively obtaining the real-time cosmic ray dose equivalent rate. This makes the cosmic ray dose equivalent rate a value that varies over time, rather than a fixed value, effectively reducing the error in the subtracted cosmic ray dose equivalent rate.

[0027] Step S106: Construct a second set of linear equations for multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of multiple radiation dose rates. Optionally, when using a detector to measure the background, the detector readings It is the sum of environmental radiation dose, cosmic ray dose, and detector background, where R is the sum of these three factors. TR R represents the detector's response to ambient radiation. SCR The detector's response to cosmic rays, This is the inherent background of the detector.

[0028] In some preferred embodiments, a second set of linear equations relating multiple radiation dose rates to the environmental dose equivalent rate and the cosmic ray dose equivalent rate is constructed, including: determining multiple cosmic ray responses based on multiple detectors being located in a cosmic ray laboratory; determining multiple environmental radiation responses based on multiple detectors being located in a cosmic ray laboratory; determining the inherent background corresponding to each of the multiple detectors; and constructing a second set of linear equations relating to the cosmic ray dose equivalent rate based on the multiple radiation dose rates, multiple cosmic ray responses, multiple environmental radiation responses, and multiple inherent backgrounds.

[0029] Alternatively, since the response of any detector to ambient radiation and cosmic rays is different, the solution cannot be obtained from the two formulas mentioned above alone. That is, based solely on the measurement readings from a single detector. It cannot be concluded .

[0030] Optionally, the response of detectors A and B to ambient radiation (Ri) A TR R B TR ) and cosmic ray response (R A SCR R B SCR ), the inherent background of the detector ( , This can be obtained from environmental dose standard laboratory tests, based on the readings of two detectors. and Calculate .

[0031] In some preferred embodiments, determining multiple cosmic ray responses based on multiple detectors in a cosmic ray laboratory includes: constructing a standard cosmic ray simulation field; placing multiple detectors within the standard cosmic ray simulation field; determining first readings corresponding to each of the multiple detectors; obtaining a first conventional truth value corresponding to the standard cosmic ray simulation field; and determining multiple cosmic ray responses based on the ratios of the multiple first readings to the first conventional truth value.

[0032] Optionally, the detector's response to ambient radiation R TR The detector's inherent background radiation (R0) needs to be measured in an underground laboratory. Because the laboratory is located at a sufficient depth underground, the intensity of cosmic rays is greatly reduced. A quasi-continuous (broad) photon spectrum from a sealed 226Ra source is used to simulate a typical natural environment to test the detector's response to ambient background radiation (R0). TR In this environment of extremely low background radiation, the detector's inherent background can be directly measured. .

[0033] Optionally, the detector's response to cosmic rays R SCR Measurements must be taken in an environment where the detector is almost exclusively exposed to radiation from cosmic rays. In accordance with the requirements of the "Technical Specification for Measurement of Environmental Gamma Radiation Dose Rate", a freshwater lake surface with a water depth greater than 3m and a distance from the shore greater than 1km is selected as the measurement point (the standard cosmic ray simulation field), which can effectively shield radiation from the lake bottom and the ground.

[0034] In some preferred embodiments, a second set of linear equations concerning the cosmic ray dose equivalent rate is constructed based on multiple radiation dose rates, multiple cosmic ray responses, multiple environmental radiation responses, and multiple intrinsic backgrounds. The second set of linear equations is as follows: Among them, R A TR R is the ambient radiation response measured by detector A. B TR R represents the ambient radiation response measured by detector B. A SCR The cosmic ray response determined by detector A; R B SCR The cosmic ray response is based on detector B; This represents the inherent background of detector A; This represents the inherent background of detector B; The radiation dose rate measured by detector A; The radiation dose rate measured by detector B.

[0035] Optionally, when using two complementary and isotropic detectors (denoted as detector A and detector B) to simultaneously measure ambient radiation and cosmic rays, the measurement results from multiple detectors can be combined to roughly determine the ambient dose equivalent rate and the cosmic ray dose equivalent rate. Since the background dose equivalent rate mainly includes the ambient dose equivalent rate and the cosmic ray dose equivalent rate, and other dose equivalent rates may also exist, in the process of combining multiple sets of equations (three or more), if the second linear equation set is solved directly using the detector readings, contradictions may occur. Therefore, only the cosmic ray dose equivalent rate is solved. The ambient dose equivalent rate is obtained by combining it with the first linear equation and calculating the difference between the background dose equivalent rate and the cosmic ray dose equivalent rate.

[0036] Step S108: Based on the simultaneous equations of the first and second linear equations, determine the background dose equivalent rate in the current environment. In some preferred embodiments, the background dose equivalent rate in the current environment is determined by simultaneously solving the first linear equation and the second linear equation system. The background dose equivalent rate is calculated as follows: in, The background dose equivalent rate, Environmental dose equivalent rate, R is the cosmic ray dose equivalent rate. A TR R is the ambient radiation response measured by detector A. B TR R is the ambient radiation response measured by detector B. A SCR R represents the cosmic ray response measured by detector A. B SCR The cosmic ray response measured by detector B. This represents the inherent background of detector A; This represents the inherent background of detector B; The radiation dose rate measured by detector A; The radiation dose rate measured by detector B.

[0037] Optionally, the above formula holds true under the following conditions: and To ensure this condition is met, the ideal combination is a gas detector (detector A) and a scintillation spectrometer (detector B). The gas detector (detector A) should be designed with 4π symmetry to be isotropic for both ambient radiation and cosmic rays. When the sensitive region of the scintillation detector (scintillation spectrometer, detector B) is designed in a cylindrical shape, its height and diameter should be the same, thus approximating a spherical detector. When using these detectors for radiation environment monitoring, the sensitivity of the two detectors to ambient radiation (R0) should first be determined. A TR R B TR ) and the response to cosmic rays (R A SCR R B SCR ) and the detector's inherent background ( , Then, based on the readings of the two detectors... and Then, the background dose equivalent rate of the measurement point can be obtained by substituting it into the above formula.

[0038] Step S110: Solve the second set of linear equations simultaneously to determine the cosmic ray dose equivalent rate in the current environment. In some preferred embodiments, the second system of linear equations is solved simultaneously to determine the cosmic ray dose equivalent rate in the current environment. The cosmic ray dose equivalent rate is calculated as follows: in, R is the cosmic ray dose equivalent rate. A TR R is the ambient radiation response measured by detector A. B TR R is the ambient radiation response measured by detector B. A SCR R represents the cosmic ray response measured by detector A. B SCR The cosmic ray response measured by detector B. This represents the inherent background of detector A; This represents the inherent background of detector B; The radiation dose rate measured by detector A; The radiation dose rate measured by detector B.

[0039] Optionally, in the case of a simultaneous system of second linear equations, one can... Cosmic ray dose equivalent rate can be determined by two detectors on ambient radiation (R0). A TR R B TR ) and the response to cosmic rays (R A SCR R B SCR ), and the detector's inherent background ( , ), and readings from two other detectors. and This means that, assuming all of the above information is known, the cosmic ray dose equivalent rate at the current moment can be obtained. This rate can then be subtracted in real time from the background dose equivalent rate of environmental monitoring, ensuring the accuracy, scientific validity, and comparability of the environmental dose equivalent rate in radiation environmental monitoring data.

[0040] Step S112: Based on the first linear equation and the background dose equivalent rate, subtract the cosmic ray dose equivalent rate at the current moment to determine the environmental dose equivalent rate in the current environment.

[0041] Through the above steps S102 to S112, the purpose of calculating the real-time dose equivalent rate of cosmic rays generated at the current moment and subtracting the cosmic ray dose equivalent rate in real time is achieved. This realizes the technical effect of converting the originally fixed cosmic ray dose equivalent rate into the real-time generated cosmic ray dose equivalent rate, reducing the deviation of the environmental dose rate equivalent obtained in multiple experiments, and thus solving the technical problem that the environmental gamma radiation dose rate obtained is greatly erroneous due to the use of a pre-prepared dose equivalent rate of cosmic rays generated as the response value required for multiple measurements in related technologies.

[0042] Example 2 Based on the above embodiments and optional embodiments, the present invention also proposes an optional implementation method. Figure 2 This is a flowchart of an optional method for real-time subtraction of cosmic rays in environmental radiation monitoring according to Embodiment 2 of the present invention, as shown below. Figure 2 As shown, the method includes: Step S1, Detection system setup: A detection system is constructed using a gas detector (detector A) and a scintillation spectrometer (detector B). The gas detector (detector A) should be designed with 4π symmetry and be isotropic for both ambient radiation and cosmic rays. When the sensitive region of the scintillation detector (scintillation spectrometer, detector B) is designed in a cylindrical shape, its height and diameter should be the same, thus approximating a spherical detector. When using these detectors for radiation environment monitoring, the sensitivity of the two detectors to ambient radiation (R0) should first be determined. A TR R B TR ) and the response to cosmic rays (R A SCR R B SCR ) and the detector's inherent background ( , Then, based on the readings of the two detectors... and The background dose equivalent rate and cosmic ray dose equivalent rate of the measurement point are obtained.

[0043] Step S2, Response Coefficient Determination: The response of detectors A and B to ambient radiation (R A TR R B TR ) and cosmic ray response (R A SCR R B SCR ), the inherent background of the detector ( , This can be obtained from environmental dose standard laboratory tests, based on the readings of two detectors. and Calculate .

[0044] The detector's response to ambient radiation R TR The detector's inherent background radiation (R0) needs to be measured in an underground laboratory. Because the laboratory is located at a sufficient depth underground, the intensity of cosmic rays is greatly reduced. A quasi-continuous (broad) photon spectrum from a sealed 226Ra source is used to simulate a typical natural environment to test the detector's response to ambient background radiation (R0). TR In this environment of extremely low background radiation, the detector's inherent background can be directly measured. .

[0045] Step S3, coincides with the measurement of the detection system: Based on the above preparation conditions, the conditions that need to be guaranteed are: and .

[0046] Step S4: Real-time subtraction of cosmic ray dose equivalent rate from environmental radiation data: After obtaining In this case, the above-mentioned cosmic ray dose equivalent rate is subtracted in real time to obtain the environmental dose equivalent rate.

[0047] Different measuring instruments, due to variations in detectors, electronic processing methods, and response times, exhibit different responses to cosmic rays in different radiation fields, resulting in significant differences in cosmic ray response measurement results. Therefore, it is necessary to subtract the instrument's response to cosmic rays when measuring gamma radiation dose rate to minimize measurement errors and ensure the accuracy, scientific validity, and comparability of radiation environment monitoring data. Through steps S1 to S4 described above, the cosmic ray dose rate can be directly measured in real time, reducing measurement errors and ensuring the accuracy of radiation environment monitoring data.

[0048] Example 3 This embodiment also provides a device for real-time subtraction of cosmic rays in environmental radiation monitoring. This device is used to implement the above embodiments and preferred embodiments, and will not be repeated as already described. As used below, the terms "module" and "device" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0049] According to an embodiment of the present invention, an apparatus embodiment for implementing the above-described method for real-time subtraction of cosmic rays in environmental radiation monitoring is also provided. Figure 3This is a schematic diagram of the device for real-time subtraction of cosmic rays in environmental radiation monitoring in Embodiment 3 of the present invention, as shown below. Figure 3 As shown, the above-mentioned device includes: an equation construction module 301, a radiation dose rate acquisition module 302, an equation system construction module 303, a simultaneous equation module 304, a solution module 305, and a real-time subtraction module 306, wherein: Equation construction module 301 constructs the first linear equation of the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; The radiation dose rate acquisition module 302 is connected to the equation construction module 301 to acquire multiple radiation dose rates in the current environment measured by multiple detectors, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates. The equation system construction module 303 is connected to the radiation dose rate acquisition module 302 to construct a second linear equation system of multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate. The number of equations in the second linear equation system is the same as the number of multiple radiation dose rates. The simultaneous equation module 304, connected to the equation system construction module 303, determines the background dose equivalent rate in the current environment based on the simultaneous equation of the first linear equation and the second linear equation system. The solver module 305, connected to the simultaneous equations module 304, solves the second linear equation system simultaneously to determine the cosmic ray dose equivalent rate in the current environment. The real-time subtraction module 306, connected to the solution module 305, subtracts the cosmic ray dose equivalent rate at the current moment based on the first linear equation and the background dose equivalent rate, and determines the environmental dose equivalent rate in the current environment.

[0050] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0051] It should be noted that the equation construction module 301, radiation dose rate acquisition module 302, equation system construction module 303, simultaneous equation module 304, solution module 305, and real-time subtraction module 306 correspond to steps S102 to S112 in the embodiments. The instances and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should be noted that the above modules, as part of the device, can run on a computer terminal.

[0052] It should be noted that the optional or preferred implementation methods of this embodiment can be found in the relevant descriptions in the embodiments, and will not be repeated here.

[0053] The aforementioned device for real-time subtraction of cosmic rays in environmental radiation monitoring may also include a processor and a memory. The aforementioned equation construction module 301, radiation dose rate acquisition module 302, equation system construction module 303, simultaneous equation module 304, solution module 305, and real-time subtraction module 306 are all stored in the memory as program modules. The processor executes the aforementioned program modules stored in the memory to realize the corresponding functions.

[0054] The processor contains a core that retrieves the corresponding program modules from memory. One or more cores may be configured. Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory includes at least one memory chip.

[0055] According to an embodiment of this application, an embodiment of a non-volatile storage medium is also provided. Optionally, in this embodiment, the non-volatile storage medium includes a stored program, wherein, when the program is running, it controls the device containing the non-volatile storage medium to execute any of the aforementioned methods for real-time subtraction of cosmic rays in environmental radiation monitoring.

[0056] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals, and the non-volatile storage medium includes stored programs.

[0057] Optionally, during program execution, the device containing the non-volatile storage medium may be controlled to perform the following functions: construct a first linear equation relating the background dose equivalent rate to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; obtain multiple radiation dose rates measured by multiple detectors in the current environment at the current moment, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates; construct a second set of linear equations relating the multiple radiation dose rates to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of multiple radiation dose rates; determine the background dose equivalent rate in the current environment by simultaneously solving the first and second linear equations; solve the second set of linear equations to determine the cosmic ray dose equivalent rate in the current environment; and determine the environmental dose equivalent rate in the current environment by subtracting the cosmic ray dose equivalent rate from the first linear equation and the background dose equivalent rate.

[0058] According to an embodiment of this application, an embodiment of a processor is also provided. Optionally, in this embodiment, the processor is used to run a program, wherein the program executes any of the above-described methods for real-time subtraction of cosmic rays in environmental radiation monitoring.

[0059] According to an embodiment of this application, an embodiment of a computer program product is also provided. Optionally, in this embodiment, the computer program product includes a computer program that, when executed by a processor, implements the steps of the method for real-time subtraction of cosmic rays in any of the above-described environmental radiation monitoring methods.

[0060] Optionally, when the aforementioned computer program product is executed on a data processing device, it is suitable to execute an initialization program with the following method steps: constructing a first linear equation of the background dose equivalent rate with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; obtaining multiple radiation dose rates measured by multiple detectors in the current environment at the current moment, wherein the number of multiple detectors is the same as the number of multiple radiation dose rates; constructing a second set of linear equations of multiple radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of multiple radiation dose rates; determining the background dose equivalent rate in the current environment based on the simultaneous solution of the first linear equation and the second set of linear equations; solving the second set of linear equations to determine the cosmic ray dose equivalent rate in the current environment; and determining the environmental dose equivalent rate in the current environment by subtracting the cosmic ray dose equivalent rate from the first linear equation and the background dose equivalent rate.

[0061] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: constructing a first linear equation relating the background dose equivalent rate to the environmental dose equivalent rate and the cosmic ray dose equivalent rate; obtaining multiple radiation dose rates measured by multiple detectors in the current environment at the current moment, wherein the number of detectors is the same as the number of radiation dose rates; constructing a second set of linear equations relating the multiple radiation dose rates to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second set of linear equations is the same as the number of radiation dose rates; determining the background dose equivalent rate in the current environment by simultaneously solving the first and second linear equations; solving the second set of linear equations to determine the cosmic ray dose equivalent rate in the current environment; and determining the environmental dose equivalent rate in the current environment by subtracting the cosmic ray dose equivalent rate from the first linear equation and the background dose equivalent rate.

[0062] The order of the above embodiments of the present invention is merely for description and does not represent the superiority or inferiority of the embodiments.

[0063] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0064] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of modules described above can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules, and may be electrical or other forms.

[0065] The modules described above as separate components may or may not be physically separate. Similarly, the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0066] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0067] If the aforementioned integrated modules are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable non-volatile storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a non-volatile storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned non-volatile storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0068] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method of real-time subtraction of cosmic rays in environmental radiation monitoring, characterized by, The method comprises the following steps: constructing a first linear equation of background dose equivalent rate with respect to environmental dose equivalent rate and cosmic ray dose equivalent rate; acquiring a plurality of radiation dose rates measured by a plurality of detectors at the current time in the environment, wherein the number of the plurality of detectors is the same as the number of the plurality of radiation dose rates; constructing a second linear equation set of the plurality of radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second linear equation set is the same as the number of the plurality of radiation dose rates; determining the background dose equivalent rate in the environment at the current time based on the first linear equation and the second linear equation set; solving the second linear equation set to determine the cosmic ray dose equivalent rate in the environment at the current time; subtracting the cosmic ray dose equivalent rate at the current time from the first linear equation and the background dose equivalent rate to determine the environmental dose equivalent rate in the environment at the current time.

2. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 1, characterized in that, constructing a first linear equation of background dose equivalent rate with respect to environmental dose equivalent rate and cosmic ray dose equivalent rate, the first linear equation is as follows: wherein, is the background dose equivalent rate, is the environmental dose equivalent rate, is the cosmic ray dose equivalent rate.

3. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 2, characterized in that, constructing a second linear equation set of the plurality of radiation dose rates with respect to the environmental dose equivalent rate and the cosmic ray dose equivalent rate, comprising: determining a plurality of cosmic ray responses based on the plurality of detectors in the cosmic ray laboratory; determining a plurality of environmental radiation responses based on the plurality of detectors in the cosmic ray laboratory; determining the inherent background of the plurality of detectors respectively; constructing a second linear equation set of the cosmic ray dose equivalent rate according to the plurality of radiation dose rates, the plurality of cosmic ray responses, the plurality of environmental radiation responses and the plurality of inherent backgrounds.

4. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 3, characterized in that, The method comprises the following steps: constructing a cosmic ray standard simulation field; placing the plurality of detectors in the cosmic ray standard simulation field; determining the first reading of the plurality of detectors respectively; acquiring the first agreed true value corresponding to the cosmic ray standard simulation field; determining the plurality of cosmic ray responses based on the ratio of the plurality of first readings to the first agreed true value.

5. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 4, characterized in that, constructing a second linear equation set of the cosmic ray dose equivalent rate according to the plurality of radiation dose rates, the plurality of cosmic ray responses, the plurality of environmental radiation responses and the plurality of inherent backgrounds, the second linear equation set is as follows: where R A TR R is the environmental radiation response measured by detector A; R B TR R is the environmental radiation response measured by detector B; R A SCR R is the cosmic ray response determined based on detector A; B SCR R is the cosmic ray response determined based on detector B; R is the intrinsic background corresponding to detector A; R is the intrinsic background corresponding to detector B; R is the radiation dose rate measured by detector A; R is the radiation dose rate measured by detector B.

6. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 5, characterized in that, determining the background dose equivalent rate in the environment at the current time based on the first linear equation and the second linear equation set, the background dose equivalent rate is calculated as follows: wherein, Rbackgroundis the background dose equivalent rate, Rambientis the ambient dose equivalent rate, Rcosmicis the cosmic ray dose equivalent rate, R A TR RambientAis the ambient radiation response measured by detector A, R B TR RambientBis the ambient radiation response measured by detector B, R A SCR RcosmicAis the cosmic ray response measured by detector A, R B SCR RcosmicBis the cosmic ray response measured by detector B, R RbackgroundBis the intrinsic background of detector B; RdoserateAis the radiation dose rate measured by detector A; RdoserateBis the radiation dose rate measured by detector B.

7. The method for real-time subtraction of cosmic rays in environmental radiation monitoring according to claim 6, characterized in that, solving the second linear equation set to determine the cosmic ray dose equivalent rate in the environment at the current time, the cosmic ray dose equivalent rate is calculated as follows: wherein, R is the cosmic ray dose equivalent rate, A TR R is the environmental radiation response measured by detector A, B TR R is the environmental radiation response measured by detector B, A SCR R is the cosmic ray response measured by detector A, B SCR R is the cosmic ray response measured by detector B, R is the intrinsic background corresponding to detector A; R is the intrinsic background corresponding to detector B; R is the radiation dose rate measured by detector A; R is the radiation dose rate measured by detector B.

8. An apparatus for real-time subtraction of cosmic rays in environmental radiation monitoring, characterized by, The method comprises the following steps: an equation construction module for constructing a first linear equation of background dose equivalent rate with respect to environmental dose equivalent rate and cosmic ray dose equivalent rate; a radiation dose rate acquisition module for acquiring a plurality of radiation dose rates measured by a plurality of detectors at the current time in the environment, wherein the number of the plurality of detectors is the same as the number of the plurality of radiation dose rates; a system of equations constructing module, which constructs a second linear system of equations of the plurality of radiation dose rates with respect to the ambient dose equivalent rate and the cosmic ray dose equivalent rate, wherein the number of equations in the second linear system of equations is the same as the number of the plurality of radiation dose rates; a simultaneous equation module, which determines the background dose equivalent rate in the environment at the current time based on the simultaneous equations of the first linear equation and the second linear system of equations; a solving module, which determines the cosmic ray dose equivalent rate in the environment at the current time by solving the second linear system of equations; a real-time deduction module, which deducts the cosmic ray dose equivalent rate at the current time based on the first linear equation and the background dose equivalent rate to determine the ambient dose equivalent rate in the environment at the current time.

9. A non-volatile storage medium, characterized by The non-volatile storage medium stores a plurality of instructions, which are adapted to be loaded and executed by the processor to implement the method for real-time deduction of cosmic rays in environmental radiation monitoring according to any one of claims 1 to 7.

10. A computer program product comprising a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method for real-time deduction of cosmic rays in environmental radiation monitoring according to any one of claims 1 to 7.

Images