An active automatic energy scaling method, apparatus, device, medium and product

Abstract

The application provides an active automatic energy calibration method, which can be applied to the technical field of nuclear radiation detection and gamma spectrum analysis. The method comprises the following steps: obtaining gamma spectrum data of a single-nuclide standard source; determining a suspected peak channel address list based on the gamma spectrum data and a preset screening rule; determining an effective channel address pair in the suspected peak channel address list based on strong peak standard parameters corresponding to the single-nuclide standard source in a nuclide library; in response to the number of the effective channel address pair being greater than or equal to 1, calculating an energy calibration coefficient of a calibration model based on the calibration model, the effective channel address pair and effective channel standard parameters corresponding to the effective channel address pair in the nuclide library; verifying the accuracy of the energy calibration coefficient based on weak peak standard parameters corresponding to the single-nuclide standard source in the nuclide library; and determining that the energy calibration coefficient is valid in response to a verification result of the energy calibration coefficient being accurate. The application also provides an active automatic energy calibration device, equipment, medium and product.

Description

Technical Field

[0001] This invention relates to the field of nuclear radiation detection and gamma spectrum analysis technology, and more specifically to an active automatic energy calibration method, apparatus, equipment, medium and product. Background Technology

[0002] Active energy calibration technology automatically identifies characteristic peaks in the energy spectrum using a radioactive standard source with known energy values ​​and establishes a mathematical mapping relationship between channel addresses and energies. This enables the spectrometer to convert any subsequently acquired channel address signal into an accurate energy value. Existing active energy calibration technologies have the following drawbacks: 1. Existing technologies are prone to misjudging noise peaks in low signal-to-noise ratio scenarios, and the lack of dynamic feedback easily leads to accumulated errors, affecting the accuracy of the energy calibration coefficients; 2. Existing technologies rely on multi-nucleoside library standard sources, which are difficult to prepare, computationally intensive, and cannot meet the needs of emergency scenarios. Summary of the Invention

[0003] In view of the above problems, according to a first aspect of the present invention, an active automatic energy calibration method is provided, the method comprising: acquiring gamma spectral data of a single nuclide standard source; determining a list of suspected peak addresses based on the gamma spectral data and a preset screening rule; determining valid address pairs in the list of suspected peak addresses based on strong peak standard parameters corresponding to the single nuclide standard source in a nuclide library; in response to the number of valid address pairs being greater than or equal to 1, calculating an energy calibration coefficient of the calibration model based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library; verifying the accuracy of the energy calibration coefficient based on weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library; and determining the energy calibration coefficient to be valid in response to the verification result of the energy calibration coefficient being accurate.

[0004] According to an embodiment of the present invention, determining valid address pairs in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library includes: determining the measured address ratio of each address pair based on the address pairs in the list of suspected peak addresses; and determining valid address pairs by comparing the measured address ratio with the strong peak energy ratio in the strong peak standard parameters.

[0005] According to an embodiment of the present invention, the step of determining a valid address pair by comparing the measured address ratio with the peak energy ratio in the peak energy standard parameters includes: determining the address pair corresponding to the measured address ratio as a valid address pair in response to the deviation between the measured address ratio and the peak energy ratio being within a first threshold range; and determining the address pair corresponding to the measured address ratio as an invalid address pair in response to the deviation between the measured address ratio and the peak energy ratio being within a second threshold range.

[0006] According to an embodiment of the present invention, after determining a valid address pair in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, the active automatic energy calibration method further includes: in response to the absence of the valid address pair, extending the acquisition time of the gamma spectrum data and reacquiring the gamma spectrum data of the single nuclide standard source; re-determining the list of suspected peak addresses based on the re-acquired gamma spectrum data and preset screening rules; and re-determining a valid address pair in the re-determined list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library.

[0007] According to an embodiment of the present invention, verifying the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library includes: extracting the weak peak address from the gamma spectrum data based on the weak peak standard parameters; determining the theoretical energy of the weak peak by substituting the energy calibration coefficient and the weak peak address into the calibration model; and determining the accuracy of the energy calibration coefficient in response to the deviation between the theoretical energy of the weak peak and the weak peak standard energy in the weak peak standard parameters being within a third threshold range.

[0008] According to an embodiment of the present invention, after determining the theoretical energy of the weak peak by substituting it into the calibration model based on the energy calibration coefficient and the weak peak address, the step of verifying the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library further includes: adjusting the preset screening rules and re-determining the list of suspected peak addresses and valid address pairs in response to the deviation between the theoretical energy of the weak peak and the standard energy of the weak peak being within a fourth threshold range; recalculating and determining the energy calibration coefficient based on the re-determined valid address pairs and the standard parameters of the valid addresses, and in combination with the weak peak address and the standard parameters of the weak peak; and re-verifying the accuracy of the re-determined energy calibration coefficient until the deviation between the re-determined theoretical energy of the weak peak and the standard energy of the weak peak is within the third threshold range.

[0009] A second aspect of the present invention provides an active automatic energy calibration device, the device comprising: an energy spectrum acquisition module for acquiring gamma energy spectrum data of a single nuclide standard source; a suspected peak address determination module for determining a list of suspected peak addresses based on the gamma energy spectrum data and preset screening rules; a valid address determination module for determining valid address pairs in the list of suspected peak addresses based on strong peak standard parameters corresponding to the single nuclide standard source in a nuclide library; a coefficient calculation module for calculating an energy calibration coefficient of the calibration model based on the calibration model, the valid address pairs, and valid address standard parameters corresponding to the valid address pairs in the nuclide library, in response to the number of valid address pairs being greater than or equal to 1; a coefficient verification module for verifying the accuracy of the energy calibration coefficient based on weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library; and a coefficient determination module for determining the energy calibration coefficient to be valid in response to the verification result of the energy calibration coefficient being accurate.

[0010] A third aspect of the present invention provides an electronic device comprising: one or more processors; and a memory for storing one or more computer programs, wherein the one or more processors execute the one or more computer programs to implement the steps of the method.

[0011] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program or instructions stored thereon, which, when executed by a processor, implement the steps of the method.

[0012] A fifth aspect of the present invention provides a computer program product comprising a computer program or instructions which, when executed by a processor, implement the steps of the method.

[0013] The above one or more embodiments have the following advantages or beneficial effects: The active automatic energy calibration method provided by the embodiments of the present invention acquires gamma spectrum data of a single nuclide standard source, and determines a list of suspected peak addresses based on the gamma spectrum data and preset screening rules. Then, based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, valid address pairs are determined from the list of suspected peak addresses. When the number of valid address pairs is greater than or equal to 1, the energy calibration coefficient of the calibration model is calculated based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library, thus realizing the first closed-loop mechanism. Based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library, the accuracy of the energy calibration coefficient is verified. When the verification result of the energy calibration coefficient is accurate, the energy calibration coefficient is determined to be valid, thus realizing the second closed-loop mechanism. Compared to traditional techniques that require constructing a nuclide library using multiple nuclides to determine energy calibration coefficients, this invention uses a single, multi-characteristic peak standard source to determine energy calibration coefficients. The single-nuclide standard source reduces preparation difficulty, extends storage time, and avoids ratio imbalances caused by nuclide decay. Calculating energy calibration coefficients using at least one set of valid address pairs eliminates the need to traverse all energy ratios or peak combinations, significantly reducing the computational load. Furthermore, the single-nuclide standard source requires less nuclide library storage, shortening data retrieval time and consequently reducing calibration time for complex energy spectra. This makes it more suitable for small and medium-sized laboratories and emergency field applications, improving monitoring efficiency. It also eliminates the need for operators to possess multi-nuclide identification skills, lowering the barrier to entry. A first closed-loop mechanism ensures that at least one set of valid address pairs can be identified from the list of suspected peak addresses. Energy calibration coefficients are calculated based on these valid address pairs, and a second closed-loop mechanism ensures the accuracy of the coefficient calculation. The first closed loop provides the foundation for the second closed loop, and the interdependence between the two significantly reduces the overall error in the energy calibration coefficient calculation.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0015] The above-described features, other objects, and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0016] Figure 1 The illustration schematically depicts an application scenario of an active automatic energy calibration method, apparatus, device, medium, and product according to embodiments of the present invention.

[0017] Figure 2 A flowchart illustrating an active automatic energy calibration method according to an embodiment of the present invention is shown schematically.

[0018] Figure 3 A logic diagram of an active automatic energy calibration method according to an embodiment of the present invention is illustrated schematically;

[0019] Figure 4 A schematic diagram illustrating the structure of an active automatic energy calibration device according to an embodiment of the present invention is shown.

[0020] Figure 5 A block diagram of an electronic device suitable for implementing an active automatic energy calibration method according to an embodiment of the present invention is shown schematically. Detailed Implementation

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0023] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0024] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0025] First, the technical terms involved in this invention will be explained and described as follows.

[0026] The gamma spectrum, or gamma-ray spectrum, is a statistical graph of the energy distribution of gamma photons.

[0027] The channel address is the address of the pulse signal output by the detector, which is allocated to a specific storage unit according to its corresponding energy.

[0028] A characteristic peak is a peak in the gamma spectrum where the count rate of gamma rays of a specific energy is significantly higher than that of the surrounding peaks.

[0029] Energy calibration is the process of establishing an accurate mathematical correspondence between the channel address of the gamma energy spectrum and the gamma ray energy.

[0030] A standard source is a radioactive reference material whose activity and energy value are known and which has been certified by the relevant institution.

[0031] A nuclide library is a collection of data that stores the characteristic parameters of various radioactive nuclides.

[0032] The energy ratio refers to the ratio between the energies of two different characteristic gamma rays emitted by the same radionuclide. For a specific radionuclide, the energy ratio between its different characteristic peaks is a fixed physical constant.

[0033] A radionuclide standard source is a radionuclide whose properties and activity are known within a certain time period and can be used as a reference standard.

[0034] Existing active energy calibration techniques have the following drawbacks: they are prone to misjudging noise peaks in low signal-to-noise ratio scenarios, and the lack of dynamic feedback can lead to cumulative errors, affecting the accuracy of energy calibration coefficients; existing techniques rely on multi-nucleoside library standard sources, which are difficult to prepare, computationally intensive, and cannot meet the needs of emergency scenarios.

[0035] Based on this, embodiments of the present invention provide an active automatic energy calibration method, the method comprising: acquiring gamma spectral data of a single nuclide standard source; determining a list of suspected peak addresses based on the gamma spectral data and preset screening rules; determining valid address pairs in the list of suspected peak addresses based on strong peak standard parameters corresponding to the single nuclide standard source in a nuclide library; in response to the number of valid address pairs being greater than or equal to 1, calculating the energy calibration coefficient of the calibration model based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library; verifying the accuracy of the energy calibration coefficient based on weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library; and determining the energy calibration coefficient to be valid in response to the verification result of the energy calibration coefficient being accurate.

[0036] The active automatic energy calibration method provided in this invention acquires gamma-ray spectrum data of a single nuclide standard source. Based on the gamma-ray spectrum data and preset screening rules, a list of suspected peak addresses is determined. Then, based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, valid address pairs are determined from the list of suspected peak addresses. When the number of valid address pairs is greater than or equal to 1, the energy calibration coefficient of the calibration model is calculated based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library, thus realizing the first closed-loop mechanism. Based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library, the accuracy of the energy calibration coefficient is verified. When the verification result of the energy calibration coefficient is accurate, the energy calibration coefficient is determined to be valid, thus realizing the second closed-loop mechanism. Compared with the traditional technology that requires multiple nuclides to construct a nuclide library to determine the energy calibration coefficient, this invention achieves the determination of the energy calibration coefficient through a single or multiple characteristic peak standard source. The single nuclide standard source scheme reduces the preparation difficulty, extends the storage period, and avoids the imbalance caused by nuclide decay. Calculating energy calibration coefficients using at least one set of valid address pairs eliminates the need to traverse all energy ratios or peak combinations, significantly reducing the computational load. Furthermore, the reduced storage size of a single nuclide standard source leads to shorter data retrieval times, thereby shortening the calibration time for complex energy spectra. This makes it more suitable for small and medium-sized laboratories and emergency field applications, improving monitoring efficiency. Simultaneously, it eliminates the need for operators to possess multi-nuclide identification skills, lowering the barrier to entry. The first closed-loop mechanism ensures that at least one set of valid address pairs can be identified from the list of suspected peak addresses. Energy calibration coefficients are calculated based on these valid address pairs, and the second closed-loop mechanism ensures the accuracy of the coefficient calculations. The first closed loop provides the foundation for the second, and the interdependence between the two significantly reduces the overall error in the energy calibration coefficient calculation results.

[0037] It should be noted that the active automatic energy calibration method, apparatus, equipment, medium, and product provided in the embodiments of the present invention can be used in the field of nuclear radiation detection technology, as well as in the field of gamma spectral analysis technology, and can also be used in a variety of fields other than nuclear radiation detection and gamma spectral analysis technology. The application fields of the active automatic energy calibration method, apparatus, equipment, medium, and product provided in the embodiments of the present invention are not limited.

[0038] Figure 1 The illustration schematically depicts an application scenario of an active automatic energy calibration method, apparatus, device, medium, and product according to embodiments of the present invention.

[0039] like Figure 1As shown, application scenario 100 according to this embodiment may include a first terminal device 101, a second terminal device 102, a third terminal device 103, a network 104, and a server 105. The network 104 serves as a medium for providing a communication link between the first terminal device 101, the second terminal device 102, the third terminal device 103, and the server 105. The network 104 may include various connection types, such as wired or wireless communication links, or fiber optic cables, etc.

[0040] Users can use the first terminal device 101, the second terminal device 102, and the third terminal device 103 to interact with the server 105 via the network 104 to receive or send messages, etc. Various communication client applications can be installed on the first terminal device 101, the second terminal device 102, and the third terminal device 103, such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social media platform software, etc. (for example only).

[0041] The first terminal device 101, the second terminal device 102, and the third terminal device 103 can be various electronic devices with displays and support web browsing, including but not limited to smartphones, tablets, laptops, and desktop computers.

[0042] Server 105 can be a server that provides various services, such as a backend management server that supports websites browsed by users using the first terminal device 101, the second terminal device 102, and the third terminal device 103 (this is just an example). The backend management server can analyze and process data such as received user requests, and feed back the processing results (such as web pages, information, or data obtained or generated according to user requests) to the terminal devices.

[0043] It should be noted that the active automatic energy calibration method provided in this embodiment of the invention can generally be executed by server 105. Correspondingly, the active automatic energy calibration device provided in this embodiment of the invention can generally be located in server 105. The active automatic energy calibration method provided in this embodiment of the invention can also be executed by a server or server cluster that is different from server 105 and capable of communicating with the first terminal device 101, the second terminal device 102, the third terminal device 103, and / or server 105. Correspondingly, the active automatic energy calibration device provided in this embodiment of the invention can also be located in a server or server cluster that is different from server 105 and capable of communicating with the first terminal device 101, the second terminal device 102, the third terminal device 103, and / or server 105.

[0044] It should be understood that Figure 1The number of terminal devices, networks, and servers shown is merely illustrative. Depending on implementation needs, any number of terminal devices, networks, and servers can be included.

[0045] Figure 2 A flowchart illustrating an active automatic energy calibration method according to an embodiment of the present invention is shown.

[0046] like Figure 2 As shown, the active automatic energy calibration method 200 specifically includes operations S210 to S260.

[0047] During operation of S210, gamma spectrum data of a single nuclide standard source are acquired.

[0048] In this embodiment of the invention, a single nuclide standard source is placed in the detector, and the data acquisition system is activated to acquire raw address-count form gamma spectrum data.

[0049] In operation S220, a list of suspected peak addresses is determined based on the gamma spectrum data and preset screening rules.

[0050] In this embodiment of the invention, based on the gamma spectrum data obtained in the aforementioned operation S210, peak screening is performed to determine a list of suspected peak addresses. Preset screening rules can be set with certain conditions and thresholds as needed. In one embodiment, the preset screening rules include: removing weak peaks with counts less than or equal to a count threshold, and removing neighboring peaks of the corresponding address whose peak spacing is less than a peak spacing threshold. The remaining peak positions form the list of suspected peak addresses.

[0051] In operation S230, based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, a valid address pair is determined in the list of suspected peak addresses.

[0052] In this embodiment of the invention, the nuclide library stores characteristic parameters of the same single nuclide standard source (i.e., the single nuclide standard source mentioned in operation S210), which may specifically include parameters such as nuclide name, characteristic energy, and energy ratio. Based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, such as the strong peak energy ratio, valid address pairs are determined from the list of suspected peak addresses determined in operation S220.

[0053] For example, operation S230 includes: determining the measured address ratio of each address pair based on the address pairs in the suspected peak address list; and determining the valid address pairs by comparing the measured address ratio with the strong peak energy ratio in the strong peak standard parameters.

[0054] In this embodiment of the invention, all addresses in the suspected peak address list can be sorted in order of size, thereby forming multiple address pairs through permutation and combination. The measured address ratio is then calculated based on the address pairs (it is understood that the measured address ratio of the address pair should be greater than 1). The strong peak energy ratio from the strong peak standard parameters of a single nuclide standard source is retrieved from the nuclide library, and the measured address ratio is compared with the strong peak energy ratio. Based on the comparison result, valid address pairs are determined.

[0055] In this way, the ratio of strong peak energies of a single nuclide standard source is compared with the measured address ratio to screen and determine valid address pairs and exclude invalid address pairs.

[0056] Further, the step of comparing the measured address ratio with the peak energy ratio in the peak energy standard parameters to determine a valid address pair includes: determining the address pair corresponding to the measured address ratio as a valid address pair in response to the deviation between the measured address ratio and the peak energy ratio being within a first threshold range; and determining the address pair corresponding to the measured address ratio as an invalid address pair in response to the deviation between the measured address ratio and the peak energy ratio being within a second threshold range.

[0057] In this embodiment of the invention, the specific process of comparing the peak energy ratio with the measured address ratio is as follows: when the deviation between the measured address ratio and the peak energy ratio of the address pair is within a first threshold range (the threshold can be designed as needed, for example, the deviation is less than or equal to 1%), the address pair is determined to be a valid address pair; when the deviation between the measured address ratio and the peak energy ratio of the address pair is within a second threshold range (the threshold can be designed as needed, for example, the deviation is greater than 1%), the address pair is determined to be an invalid address pair, and the invalid address pair is removed.

[0058] This allows for more accurate identification of valid characteristic peak addresses (i.e., valid address pairs) and the elimination of invalid address pairs and noise peaks, which is beneficial to the accuracy of subsequent calculations.

[0059] It is understood that after operation S230, the following may also be included: in response to the number of valid address pairs being 0, extending the energy spectrum acquisition time and reacquiring gamma energy spectrum data; in response to the number of times gamma energy spectrum data is reacquiring being greater than or equal to a number threshold, an abnormal warning prompt may be output through, for example, a display device or an alarm device.

[0060] In operation S240, exemplarily, combined with Figure 3 The logic diagram of the active automatic energy calibration method according to an embodiment of the present invention is as follows: in response to the number of valid address pairs being greater than or equal to 1, the energy calibration coefficient of the calibration model is calculated based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library.

[0061] In this embodiment of the invention, operation S240 is executed based on the determination result of the valid address pairs in operation S230. That is, when the number of valid address pairs is greater than or equal to 1, the energy calibration coefficient in the calibration model is calculated based on the calibration model, combined with the valid address pairs determined in operation S230 and the valid address standard parameters corresponding to the valid address pairs in the nuclide library.

[0062] Specifically, the scale model is set as follows: .in, For gamma ray energy, It is the address (a discrete integer without a unit). The slope (one of the energy scale coefficients, which is the core coefficient) This is the intercept (one of the energy scaling factors, used to correct detector zero drift). The standard parameters for effective addresses in the nuclide library include the energy of the first strong peak corresponding to each effective address pair. Second strongest peak energy and peak energy ratio The following equation can be derived.

[0063]

[0064]

[0065]

[0066] The energy calibration coefficients can be solved based on the above equations, when the detector has no zero drift (i.e., ...). (In this case, the calculation results are more applicable to short-term calibration scenarios), then or The deviation between the two calculation results is less than or equal to 0.5%; when the detector needs to correct for zero drift, the above equation can be used to obtain... as well as .

[0067] Furthermore, after operation S230, the method further includes: in response to the absence of the effective address pair, extending the acquisition time of the gamma spectrum data and reacquiring the gamma spectrum data of the single nuclide standard source; based on the reacquired gamma spectrum data and preset screening rules, re-determining the list of suspected peak addresses; and based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, re-determining the effective address pair in the re-determined list of suspected peak addresses.

[0068] In this embodiment of the invention, combined with Figure 3As shown, based on the results of determining valid address pairs in operation S230, when no valid address pairs exist (i.e., the number of valid address pairs is 0), considering that the gamma spectrum data acquisition time may be insufficient, the gamma spectrum data acquisition time is extended to reacquire gamma spectrum data, re-determine the list of suspected peak addresses, and re-determine valid address pairs. It is understood that the specific value of extending the acquisition time can be designed according to needs and is not specifically limited here.

[0069] In this way, through the first closed-loop feedback and the adaptive optimization adjustment of the effective address pairs, it is ensured that at least one effective address pair exists, which is beneficial to the subsequent execution of the second closed loop and the calculation of the energy scale coefficient.

[0070] In operation S250, the accuracy of the energy calibration coefficient is verified based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library.

[0071] In this embodiment of the invention, weak peak standard parameters, such as weak peak address and weak peak standard energy, of a single nuclide standard source are extracted from the nuclide library. The accuracy of the energy calibration coefficient is verified based on the weak peak standard parameters to ensure the accuracy of the energy calibration coefficient solution, which is beneficial to the error control of the energy calibration coefficient.

[0072] In operation S260, in response to the verification result of the energy calibration coefficient being accurate, the energy calibration coefficient is determined to be valid.

[0073] In this embodiment of the invention, combined with Figure 3 As shown, based on the accuracy verification result of the energy scale coefficient of operation S250, the validity of the energy scale coefficient is determined. When the verification result of the energy scale coefficient is accurate, the energy scale coefficient is determined to be valid. The valid energy scale coefficient is stored and used to realize the channel address-energy conversion function.

[0074] Further, verifying the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library includes: extracting the weak peak address from the gamma spectrum data based on the weak peak standard parameters; determining the theoretical energy of the weak peak by substituting the energy calibration coefficient and the weak peak address into the calibration model; and determining the accuracy of the energy calibration coefficient in response to the deviation between the theoretical energy of the weak peak and the weak peak standard energy in the weak peak standard parameters being within a third threshold range.

[0075] In this embodiment of the invention, the specific process for verifying the accuracy of the energy calibration coefficient is as follows: The nuclide library stores the weak peak standard parameters of a single nuclide standard source. Based on these weak peak standard parameters, the weak peak address corresponding to the weak peak can be determined in the gamma energy spectrum data. Substituting the weak peak address and the calculated energy calibration coefficient into the calibration model, the theoretical energy of the weak peak can be calculated. The weak peak theory energy and weak peak standard energy A comparison is performed, and if the deviation between the two is within the third threshold range (the threshold can be designed as needed, for example, the deviation is less than or equal to 0.5%), the accuracy of the energy calibration coefficient calculated in this case is determined.

[0076] In this way, the weak peak address is determined by the weak peak standard parameters and gamma spectrum data of a single nuclide standard source. The weak peak address is then substituted into the calibration model to determine the theoretical energy of the weak peak. The theoretical energy of the weak peak is compared with the standard energy of the weak peak in the weak peak standard parameters to determine whether the calculated energy calibration coefficient is accurate. This provides feedback and helps to correct errors in the calculation process of the energy calibration coefficient.

[0077] Furthermore, after determining the theoretical energy of the weak peak by substituting it into the calibration model based on the energy calibration coefficient and the weak peak address, the step of verifying the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library further includes: adjusting the preset screening rules and re-determining the list of suspected peak addresses and valid address pairs in response to the deviation between the theoretical energy of the weak peak and the standard energy of the weak peak being within a fourth threshold range; recalculating and determining the energy calibration coefficient based on the re-determined valid address pairs and the standard parameters of the valid addresses, and in combination with the weak peak address and the standard parameters of the weak peak; and re-verifying the accuracy of the re-determined energy calibration coefficient until the deviation between the re-determined theoretical energy of the weak peak and the standard energy of the weak peak is within the third threshold range.

[0078] In this embodiment of the invention, combined with Figure 3 As shown, the weak peak theoretical energy and weak peak standard energy A comparison is performed. If the deviation between the two values ​​falls within the fourth threshold range (the threshold can be designed as needed, for example, a deviation greater than 0.5%), it is determined that the calculated energy calibration coefficient is inaccurate. Therefore, the preset screening rules need to be adjusted, such as adjusting the counting threshold and / or peak spacing threshold in the preset screening rules. The specific adjustment process is designed according to actual needs. Based on the gamma spectrum data and the adjusted preset screening rules, a list of suspected peak addresses is re-determined. Based on the standard parameters of strong peaks in the nuclide library and the re-determined list of suspected peak addresses (specifically, by comparing the measured address ratio and strong peak energy ratio mentioned above), valid address pairs are re-determined. Based on the calibration model, the re-determined valid address pairs and the corresponding valid address standard parameters, combined with the weak peak address and weak peak standard parameters, the energy calibration coefficient is recalculated. The accuracy is then re-verified based on the re-determined energy calibration coefficient until the re-determined theoretical energy of the weak peak meets the requirements of the third threshold range.

[0079] Specifically, the weak peak address and the weak peak standard energy (i.e., the weak peak standard energy in the weak peak standard parameters) are... - ) and the effective address standard energy in the redefined effective address pairs and effective address standard parameters (i.e. - , - The energy calibration coefficients are recalculated and determined by least squares fitting, and the accuracy of the recalculated energy calibration coefficients is re-verified until the deviation between the weak peak theoretical energy (which is determined by substituting the recalculated energy calibration coefficients into the calibration model) and the weak peak standard energy is within the third threshold range.

[0080] In this way, the solution of the present invention can make adaptive adjustments to the effective address selection when the energy calibration coefficient is not accurate enough (e.g., detector drift, channel address peak offset). It utilizes the second closed-loop feedback mechanism and takes advantage of the characteristic energy ratio of the same nuclide being a physical constant that is not affected by environmental noise, detector drift, or other factors. At the same time, it also introduces the weak peak channel address and weak peak standard parameter (i.e., weak peak standard energy) of a single nuclide standard source to correct the energy calibration coefficient, thereby achieving better error control and adapting to changes in equipment status (e.g., adapting to detector drift) without manual intervention.

[0081] It should be understood that the single nuclide standard source in the nuclide library is a nuclide with at least two strong characteristic peaks and at least one weak characteristic peak, in order to facilitate the implementation of some of the related steps mentioned above.

[0082] Optionally, the calibration model can be a linear model or a quadratic function model. When the detector exhibits significant nonlinear response (e.g., energies greater than 2000 keV in the high-energy range), the calibration model can be upgraded from a linear model to a quadratic function model. .in, For gamma ray energy, It is the address (a discrete integer without a unit). It is the coefficient of the quadratic term (one of the energy scale coefficients). It is the coefficient of the first term (one of the energy scale coefficients). This is a constant term (one of the energy scaling coefficients). Utilizing the effective address to the effective address standard parameter ( - , - ), weak peak channel address - weak peak standard parameters ( - Solving for the energy scale coefficients involves forming three equations. , , This improves calibration accuracy over a wide energy range (50-3000keV). It also allows for adaptation to different energy ranges, resulting in greater versatility.

[0083] Optionally, the single nuclide standard source can be Co-60, Eu-152, or Y-88. All of these nuclides must have at least two strong peaks and at least one weak peak. Eu-152 (containing a strong peak at 121.78 keV, a strong peak at 244.70 keV, and a weak peak at 411.12 keV) is suitable for low-energy (50-500 keV) calibration scenarios, while Y-88 is suitable for high-energy (800-2000 keV) calibration scenarios.

[0084] The active automatic energy calibration method provided in this invention acquires gamma spectrum data of a single nuclide standard source. Based on the gamma spectrum data and preset screening rules, a list of suspected peak addresses is determined. Then, based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, valid address pairs are determined from the list of suspected peak addresses. When the number of valid address pairs is greater than or equal to 1, the energy calibration coefficient of the calibration model is automatically calculated based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library, thus realizing the first closed-loop mechanism. Based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library, the accuracy of the energy calibration coefficient is automatically verified. When the verification result of the energy calibration coefficient is accurate, the energy calibration coefficient is determined to be valid, thus realizing the second closed-loop mechanism. Compared to traditional techniques that require constructing a nuclide library using multiple nuclides to determine energy calibration coefficients, this invention achieves automatic calculation and determination of energy calibration coefficients using a single, multi-characteristic peak standard source. The single-nuclide standard source approach reduces preparation difficulty, extends storage time, and avoids ratio imbalances caused by nuclide decay. Calculating energy calibration coefficients using at least one set of valid address pairs eliminates the need to traverse all energy ratios or peak combinations, significantly reducing the computational load. Furthermore, the single-nuclide standard source requires less nuclide library storage, shortening data retrieval time and consequently reducing the calibration time for complex energy spectra. This makes it more suitable for small and medium-sized laboratories and emergency field applications, improving monitoring efficiency. Simultaneously, it eliminates the need for operators to possess multi-nuclide identification skills, lowering the barrier to entry. A first closed-loop mechanism ensures that at least one set of valid address pairs can be identified from the list of suspected peak address pairs. Energy calibration coefficients are calculated based on these valid address pairs, and a second closed-loop mechanism ensures the accuracy of the coefficient calculation. The first closed loop provides the foundation for the second closed loop, and the interdependence between the two significantly reduces the overall error in the energy calibration coefficient calculation results.

[0085] Specifically, the active automatic energy calibration method provided by this invention brings the following beneficial effects.

[0086] 1. By comparing the strong peak energy ratio of a single nuclide standard source with the measured address ratio, valid address pairs are selected and invalid address pairs are eliminated. This allows for more accurate identification of valid characteristic peak addresses (i.e., valid address pairs) and the removal of noise peaks from invalid address pairs, which is beneficial to the accuracy of subsequent calculations. Through the first closed-loop feedback and adaptive optimization adjustment of valid address pairs, at least one valid address pair is ensured, which is beneficial to the execution of the subsequent second closed-loop and coefficient calculation results.

[0087] 2. After calculating and determining the energy calibration coefficients, a second closed loop is used to verify the accuracy of the coefficient calculation results, namely, by using the weak peak standard parameters of a single nuclide standard source. This ensures the precision of the energy calibration coefficient solution and facilitates error control. The weak peak address is determined using the weak peak standard parameters and gamma spectrum data from a single nuclide standard source. The weak peak address is then substituted into the calibration model to determine the theoretical energy of the weak peak. The theoretical energy of the weak peak is compared with the standard energy of the weak peak in the weak peak standard parameters to determine the accuracy of the calculated energy calibration coefficients. This feedback mechanism helps correct errors in the energy calibration coefficient calculation process.

[0088] 3. When the energy calibration coefficient is not accurate enough (e.g., detector drift, channel address peak offset), the second closed-loop feedback mechanism can be used to utilize the characteristic that the characteristic energy ratio of the same nuclide is a physical constant and is not affected by environmental noise, detector drift, etc., to achieve adaptive adjustment of effective channel address selection. At the same time, the weak peak channel address and weak peak standard parameter (i.e. weak peak standard energy) of a single nuclide standard source are introduced to correct the energy calibration coefficient, so as to achieve better error control and adapt to changes in equipment status without manual intervention (e.g., adapting to detector drift).

[0089] Based on the above-described active automatic energy calibration method, the present invention also provides an active automatic energy calibration device. The following will be combined with... Figure 4 The device is described in detail.

[0090] Figure 4 A schematic block diagram of an active automatic energy calibration device according to an embodiment of the present invention is shown.

[0091] like Figure 4 As shown, the active automatic energy calibration device 300 of this embodiment includes an energy spectrum acquisition module 310, a suspected peak address determination module 320, an effective address determination module 330, a coefficient calculation module 340, a coefficient verification module 350, and a coefficient determination module 360.

[0092] The energy spectrum acquisition module 310 is used to acquire gamma energy spectrum data of a single nuclide standard source. In one embodiment, the energy spectrum acquisition module 310 can be used to perform the operation S210 described above, which will not be repeated here.

[0093] The suspected peak address determination module 320 is used to determine a list of suspected peak addresses based on the gamma spectrum data and preset screening rules. In one embodiment, the suspected peak address determination module 320 can be used to perform the operation S220 described above, which will not be repeated here.

[0094] The valid address determination module 330 is used to determine valid address pairs in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library. In one embodiment, the valid address determination module 330 can be used to perform the operation S230 described above, which will not be repeated here.

[0095] The coefficient calculation module 340 is used to calculate the energy calibration coefficient of the calibration model in response to the number of valid address pairs being greater than or equal to 1, based on the calibration model, the valid address pairs, and the valid address standard parameters corresponding to the valid address pairs in the nuclide library. In one embodiment, the coefficient calculation module 340 can be used to perform the operation S240 described above, which will not be repeated here.

[0096] The coefficient verification module 350 is used to verify the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library. In one embodiment, the coefficient verification module 350 can be used to perform the operation S250 described above, which will not be repeated here.

[0097] The coefficient determination module 360 ​​is used to determine that the energy scale coefficient is valid in response to the verification result being accurate. In one embodiment, the coefficient determination module 360 ​​can be used to perform the operation S260 described above, which will not be repeated here.

[0098] According to embodiments of the present invention, any plurality of modules among the energy spectrum acquisition module 310, the suspected peak address determination module 320, the effective address determination module 330, the coefficient calculation module 340, the coefficient verification module 350, and the coefficient determination module 360 ​​can be combined into one module, or any one of these modules can be split into multiple modules. Alternatively, at least part of the functionality of one or more of these modules can be combined with at least part of the functionality of other modules and implemented in one module. According to embodiments of the present invention, at least one of the energy spectrum acquisition module 310, the suspected peak address determination module 320, the effective address determination module 330, the coefficient calculation module 340, the coefficient verification module 350, and the coefficient determination module 360 ​​can be at least partially implemented as hardware circuits, such as field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), systems-on-a-chip, systems-on-a-substrate, systems-on-package, application-specific integrated circuits (ASICs), or any other reasonable means of integrating or packaging circuits, or implemented in hardware or firmware, or in any one of software, hardware, and firmware implementations or in a suitable combination of any of these. Alternatively, at least one of the energy spectrum acquisition module 310, the suspected peak address determination module 320, the effective address determination module 330, the coefficient calculation module 340, the coefficient verification module 350, and the coefficient determination module 360 ​​can be at least partially implemented as a computer program module, which can perform corresponding functions when the computer program module is run.

[0099] Figure 5 A block diagram of an electronic device suitable for implementing an active automatic energy calibration method according to an embodiment of the present invention is shown schematically.

[0100] like Figure 5 As shown, an electronic device 400 according to an embodiment of the present invention includes a processor 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage portion 408 into a random access memory (RAM) 403. The processor 401 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 401 may also include onboard memory for caching purposes. The processor 401 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present invention.

[0101] RAM 403 stores various programs and data required for the operation of electronic device 400. Processor 401, ROM 402, and RAM 403 are interconnected via bus 404. Processor 401 executes various operations of the method flow according to embodiments of the present invention by executing programs in ROM 402 and / or RAM 403. It should be noted that the programs may also be stored in one or more memories other than ROM 402 and RAM 403. Processor 401 may also execute various operations of the method flow according to embodiments of the present invention by executing programs stored in said one or more memories.

[0102] According to an embodiment of the present invention, the electronic device 400 may further include an input / output (I / O) interface 405, which is also connected to a bus 404. The electronic device 400 may also include one or more of the following components connected to the input / output (I / O) interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the input / output (I / O) interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 410 as needed so that computer programs read from it can be installed into the storage section 408 as needed.

[0103] The present invention also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs, which, when executed, implement the method according to the embodiments of the present invention.

[0104] According to embodiments of the present invention, a computer-readable storage medium may be a non-volatile computer-readable storage medium, such as including, but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. For example, according to embodiments of the present invention, a computer-readable storage medium may include ROM 402 and / or RAM 403 and / or one or more memories other than ROM 402 and RAM 403 described above.

[0105] Embodiments of the present invention also include a computer program product comprising a computer program containing program code for performing the methods shown in the flowchart. When the computer program product is run on a computer system, the program code is used to enable the computer system to implement the active automatic energy calibration method provided in the embodiments of the present invention.

[0106] When the computer program is executed by the processor 401, it performs the functions defined in the system / apparatus of this embodiment of the invention. According to embodiments of the invention, the systems, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0107] In one embodiment, the computer program may rely on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may also be transmitted and distributed in the form of signals over a network medium, and downloaded and installed via communication section 409, and / or installed from removable medium 411. The program code contained in the computer program can be transmitted using any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination thereof.

[0108] In such an embodiment, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable medium 411. When the computer program is executed by processor 401, it performs the functions defined in the system of this embodiment of the invention. According to embodiments of the invention, the systems, devices, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0109] According to embodiments of the present invention, program code for executing the computer programs provided in the embodiments of the present invention can be written in any combination of one or more programming languages. Specifically, these computational programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can be executed entirely on the user's computing device, partially on the user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0110] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0111] Those skilled in the art will understand that the features described in the various embodiments of the present invention can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments of the present invention can be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. An active automatic energy calibration method, characterized in that, The method includes: Obtain gamma-ray spectrum data from a single nuclide standard source; Based on the gamma spectral data and preset screening rules, a list of suspected peak sites is determined; Based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, valid address pairs are determined in the list of suspected peak addresses; In response to the number of effective address pairs being greater than or equal to 1, the energy calibration coefficient of the calibration model is calculated based on the calibration model, the effective address pairs, and the effective address standard parameters corresponding to the effective address pairs in the nuclide library. The accuracy of the energy calibration coefficient is verified based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library. If the verification result of the energy calibration coefficient is accurate, the energy calibration coefficient is determined to be valid.

2. The active automatic energy calibration method according to claim 1, characterized in that, The determination of valid address pairs in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library includes: Based on the address pairs in the suspected peak address list, determine the measured address ratio of each address pair; The effective address pairs are determined by comparing the measured address ratio with the peak energy ratio in the peak standard parameters.

3. The active automatic energy calibration method according to claim 2, characterized in that, The process of determining valid address pairs by comparing the measured address ratio with the peak energy ratio in the peak standard parameters includes: In response to the deviation between the measured address ratio and the peak energy ratio being within a first threshold range, the address pair corresponding to the measured address ratio is determined to be a valid address pair; In response to the deviation between the measured address ratio and the strong peak energy ratio falling within a second threshold range, the address pair corresponding to the measured address ratio is determined to be an invalid address pair.

4. The active automatic energy calibration method according to claim 1, characterized in that, After determining the valid address pairs in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, the method further includes: In response to the absence of the effective address pair, the acquisition time of the gamma spectrum data is extended, and the gamma spectrum data of the single nuclide standard source is reacquired. Based on the newly acquired gamma spectrum data and the preset screening rules, the list of suspected peak sites was re-determined; Based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library, valid address pairs are re-determined from the re-determined list of suspected peak addresses.

5. The active automatic energy calibration method according to claim 1, characterized in that, The verification of the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library includes: Based on the weak peak standard parameters, weak peak addresses are extracted from the gamma energy spectrum data; Based on the energy calibration coefficient and the weak peak address, the theoretical energy of the weak peak is determined by substituting them into the calibration model. In response to the deviation between the theoretical energy of the weak peak and the standard energy of the weak peak in the standard parameters of the weak peak being within the third threshold range, it is determined that the energy calibration coefficient is accurate.

6. The active automatic energy calibration method according to claim 5, characterized in that, After determining the theoretical energy of the weak peak by substituting it into the calibration model based on the energy calibration coefficient and the weak peak address, the step of verifying the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library further includes: In response to the deviation between the theoretical energy of the weak peak and the standard energy of the weak peak being within the fourth threshold range, the preset screening rules are adjusted and the list of suspected peak addresses and the effective address pairs are re-determined; Based on the redefined effective address pairs and the effective address standard parameters, and in conjunction with the weak peak address and the weak peak standard parameters, the energy calibration coefficient is recalculated and determined. For the redefined energy calibration coefficient, the accuracy is re-verified until the deviation between the redefined weak peak theoretical energy and the weak peak standard energy is within the third threshold range.

7. An active automatic energy calibration device, characterized in that, The device includes: The energy spectrum acquisition module is used to acquire gamma energy spectrum data from a single nuclide standard source; The suspected peak address determination module is used to determine a list of suspected peak addresses based on the gamma spectrum data and preset screening rules. The effective address determination module is used to determine effective address pairs in the list of suspected peak addresses based on the strong peak standard parameters corresponding to the single nuclide standard source in the nuclide library. The coefficient calculation module is used to calculate the energy calibration coefficient of the calibration model based on the calibration model, the effective address pairs, and the effective address standard parameters in the nuclide library corresponding to the effective address pairs in response to the number of effective address pairs being greater than or equal to 1. The coefficient verification module is used to verify the accuracy of the energy calibration coefficient based on the weak peak standard parameters corresponding to the single nuclide standard source in the nuclide library. The coefficient determination module is used to determine that the energy scale coefficient is valid in response to the verification result of the energy scale coefficient being accurate.

8. An electronic device, comprising: One or more processors; Memory, used to store one or more computer programs. The characteristic feature is that the one or more processors execute the one or more computer programs to implement the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed by a processor, they implement the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by a processor, they implement the steps of the method according to any one of claims 1 to 6.

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