Ionizing radiation dose determination method and system based on pulse signal

Abstract

The invention relates to the technical field of radiation measurement, in particular to an ionizing radiation dose measurement method and system based on pulse signals. The method comprises the following steps: acquiring a pulse signal precision expression parameter of an ionizing radiation dose measurement parameter; acquiring a parameter control influence degree of the ionizing radiation dose measurement parameter according to the pulse signal precision performance parameter; according to the parameter control influence degree, obtaining the metering accuracy of the radiation dose measurement result; and according to the measurement accuracy, performing different processing on the radiation dose measurement result. According to the embodiment of the invention, the measurement accuracy of the radiation dose measurement result is obtained by analyzing the pulse signal precision performance parameter of the ionizing radiation dose measurement parameter and the parameter control influence degree of the radiation dose measurement parameter, and then the radiation dose measurement result is processed differently according to the measurement accuracy, so that the measurement accuracy of the radiation dose measurement result is improved. Therefore, the accuracy of the ionizing radiation measurement result based on the pulse signal is improved.

Description

Technical Field

[0001] The present application belongs to the field of radiation measurement technology, and specifically relates to a method and system for measuring ionizing radiation dose based on pulse signals. Background Art

[0002] Ionizing radiation dose measurement based on pulse signals involves converting radiation events into countable electrical signals via a detector, thereby measuring radiation dose. The system primarily consists of a detector, a signal processing unit, a data acquisition and processing module, and a display and output unit. When radiation passes through a detector (such as a Geiger-Mueller counter, a gas flow counter, or a scintillation counter), ionization events occur, generating pulse signals. These signals are amplified and shaped by a pulse amplifier and then fed into a counter for counting. The number of pulses per unit time (count rate) is calculated and converted to a dose rate using a formula. The data acquisition system records and analyzes radiation dose information in real time, generating detailed experimental reports. This method, characterized by high sensitivity, real-time monitoring, and ease of data analysis, has been widely used in the nuclear industry, medicine, and environmental monitoring to ensure radiation safety.

[0003] Currently, instruments commonly used to measure neutron radiation dose in neutron-generating radiation fields use counting electronic systems, which convert recorded signal counts into neutron reaction counts. However, with the advent of high-energy accelerators, neutron radiation fields with narrow pulses and high instantaneous dose rates have emerged within the radiation field. This has led to significant undercounting in these instruments, resulting in inaccurate pulse signal detection results based on the nuclear reaction charge. Summary of the Invention

[0004] In order to solve the above problems, the embodiments of the present application provide a method and system for measuring ionizing radiation dose based on pulse signals.

[0005] According to a first aspect of an embodiment of the present application, a method for measuring ionizing radiation dose based on a pulse signal is provided, the method comprising:

[0006] Obtain pulse signal accuracy performance parameters for ionizing radiation dose measurement parameters;

[0007] obtaining a parameter control influence degree of the ionizing radiation dose measurement parameter according to the pulse signal accuracy performance parameter;

[0008] Controlling the influence of the parameters to obtain the metrological accuracy of the radiation dose measurement result;

[0009] The radiation dose measurement results are processed differently according to the measurement accuracy.

[0010] In one embodiment, the pulse signal accuracy performance parameter for obtaining the ionizing radiation dose measurement parameter includes:

[0011] Constructing a pulse matrix according to a sampling period of the pulse signal;

[0012] According to the pulse matrix, a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is obtained.

[0013] In one embodiment, constructing a pulse matrix according to the sampling period of the pulse signal includes:

[0014] Represent multiple pulse signals existing in a single sampling period as row vectors in time sequence;

[0015] Arrange the pulse signals of different sampling periods into column vectors according to the time sequence;

[0016] The pulse matrix is ​​constructed with the normalized signal-to-noise ratio of the pulse signal as a matrix element.

[0017] In one embodiment, obtaining a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter according to the pulse matrix includes:

[0018] Obtaining the cosine similarity of any two row vectors of the impulse matrix;

[0019] Obtaining the mean of the cosine similarity between any two row vectors of the impulse matrix;

[0020] Obtaining the number of vector pairs consisting of cosine similarities of any two row vectors of the pulse matrix;

[0021] A pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is obtained according to the cosine similarity, the mean of the cosine similarity, the number of the vector pairs, and the matrix elements of the pulse matrix.

[0022] In one embodiment, obtaining the parameter control influence of the ionizing radiation dose measurement parameter based on the pulse signal accuracy performance parameter includes:

[0023] Obtaining a degree of fluctuation of the radiation dose measurement result;

[0024] Obtaining the number of samples of the pulse signal;

[0025] The parameter control influence of the radiation dose measurement parameter is obtained according to the pulse signal accuracy performance parameter, the fluctuation degree, and the sample quantity.

[0026] In one embodiment, obtaining the degree of fluctuation of the radiation dose measurement result includes:

[0027] Obtaining a ratio of a pulse signal accuracy performance parameter of any pulse signal before the jth pulse signal in the i-th pulse signal sampling period to a column parameter corresponding to the any pulse signal, where the column parameter is a sequence number of the any pulse signal in the i-th pulse signal sampling period, and i and j are both natural numbers;

[0028] obtaining a mean of the ratios;

[0029] The mean of the ratios is taken as the degree of fluctuation of the radiation dose measurement result.

[0030] In one embodiment, controlling the influence of the parameters to obtain the metrological accuracy of the radiation dose measurement result includes:

[0031] Obtaining the number of sampling periods of the pulse signal;

[0032] Obtain the difference in parameter control influence between any two pulse signals in any sampling period;

[0033] The metrological accuracy of the radiation dose measurement result is obtained according to the number of sampling periods of the pulse signal and the difference.

[0034] In one embodiment, performing different processing on the radiation dose measurement result according to the measurement accuracy includes:

[0035] When the measurement accuracy is greater than or equal to an empirical threshold, the radiation dose measurement result is determined to be accurate;

[0036] When the measurement accuracy is less than the empirical threshold, it is determined that the radiation dose measurement result is inaccurate.

[0037] In one embodiment, performing different processing on the radiation dose measurement results according to the measurement accuracy further includes:

[0038] If the radiation dose measurement result is determined to be inaccurate, the ionizing radiation dose measurement is repeated multiple times, and the average of the results of the multiple measurements is used as the final measurement result.

[0039] According to a second aspect of an embodiment of the present application, there is provided an ionizing radiation dose measurement system based on a pulse signal, the system comprising a measurement platform, the measurement platform comprising:

[0040] a memory having a computer program stored thereon;

[0041] A processor is used to execute the computer program in the memory to implement the steps of any one of the methods in the first aspect.

[0042] In summary, the embodiments of the present application provide a method and system for measuring ionizing radiation dose based on pulse signals, the method comprising: obtaining pulse signal accuracy performance parameters of ionizing radiation dose measurement parameters; obtaining parameter control influence of the radiation dose measurement parameters based on the pulse signal accuracy performance parameters; obtaining the metrological accuracy of the radiation dose measurement results based on the parameter control influence; and performing different processing on the radiation dose measurement results based on the metrological accuracy. The embodiments of the present application obtain the metrological accuracy of the radiation dose measurement results by analyzing the pulse signal accuracy performance parameters of the ionizing radiation dose measurement parameters and the parameter control influence of the radiation dose measurement parameters, and then perform different processing on the radiation dose measurement results based on the metrological accuracy (for example, re-measuring the measurement result data that does not meet the metrological accuracy threshold), thereby improving the accuracy of the ionizing radiation measurement results based on pulse signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the implementation scheme of the present application, the following is a brief introduction to the drawings required for use in the implementation scheme. It should be understood that the drawings only show certain implementation schemes of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on the drawings without paying any creative work.

[0044] Figure 1 is a schematic diagram showing a pulse signal waveform for ionizing radiation dose measurement according to an exemplary embodiment;

[0045] Figure 2 is a flow chart showing a method for measuring ionizing radiation dose based on a pulse signal according to an exemplary embodiment;

[0046] Figure 3 is a flow chart illustrating a method for obtaining a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter according to an exemplary embodiment;

[0047] Figure 4 is a flow chart showing a method for constructing a pulse matrix according to a sampling period of a pulse signal according to an exemplary embodiment;

[0048] Figure 5 is a flow chart illustrating a method for obtaining a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter based on a pulse matrix according to an exemplary embodiment;

[0049] Figure 6 is a flow chart illustrating a method for obtaining parameter control influence of radiation dose measurement parameters based on pulse signal accuracy performance parameters according to an exemplary embodiment;

[0050] Figure 7 is a flow chart showing a method for obtaining a degree of fluctuation of a radiation dose measurement result according to an exemplary embodiment;

[0051] Figure 8 This is a flow chart illustrating a method for obtaining metrological accuracy of radiation dose measurement results based on parameter control influence according to an exemplary embodiment;

[0052] Figure 9 is a flow chart illustrating a method for performing different processing on radiation dose measurement results according to measurement accuracy according to an exemplary embodiment;

[0053] Figure 10 is a flow chart illustrating another method for performing different processing on radiation dose measurement results according to measurement accuracy according to an exemplary embodiment;

[0054] Figure 11 is a block diagram of an ionizing radiation dose measurement system based on a pulse signal according to an exemplary embodiment;

[0055] Figure 12 It is a block diagram of a measurement platform according to an exemplary embodiment. DETAILED DESCRIPTION

[0056] In order to clearly illustrate the technical features of this solution, this application is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0057] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are for illustrative purposes only and are not intended to limit the scope of protection of the present application.

[0058] It should be understood that the various steps described in the method embodiments of the present application can be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0059] As used herein, the term "including" and its variations are open-ended, i.e., "including but not limited to." The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," the term "another embodiment" means "at least one additional embodiment," and the term "some embodiments" means "at least some embodiments." Other terms are defined in the following description.

[0060] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0061] It should be noted that the modifications of "one" and "multiple" mentioned in this application are illustrative and not restrictive. Those skilled in the art should understand that, unless otherwise clearly indicated in the context, they should be understood as "one or more". In the description of this application, unless otherwise specified, "multiple" refers to two or more than two, and other quantifiers are similar; "at least one item (individual)", "one (individual) or multiple items (individuals)" or similar expressions refer to any combination of these items (individuals), including any combination of single items (individuals) or plural items (individuals). For example, at least one item (individual) a can represent any number of a; for another example, one (individual) or multiple items (individuals) among a, b and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple; "and / or" is a kind of association relationship that describes associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0062] Although operations or steps are described in a specific order in the drawings in the embodiments of the present application, this should not be understood as requiring that these operations or steps be performed in the specific order shown or in a serial order, or that all of the operations or steps shown be performed to obtain the desired result. In the embodiments of the present application, these operations or steps may be performed in serial; these operations or steps may be performed in parallel; or some of these operations or steps may be performed.

[0063] At the same time, it is understandable that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) must comply with the requirements of relevant laws, regulations and relevant provisions.

[0064] First, the application scenario of this application is described. The detailed process of ionizing radiation dose measurement in a neutron radiation field is introduced as follows:

[0065] a) Select a suitable detector (such as BF3 detector, 3He detector, plastic scintillation detector).

[0066] b) Ensure that the laboratory has adequate radiation shielding and safe operating facilities.

[0067] c) Install the detector to the appropriate location, ensuring that its relative position to the neutron source meets the requirements.

[0068] d) Configure high voltage power supply, pulse amplifier and signal processing system.

[0069] e) Neutrons interact with the detector material, causing ionization reactions.

[0070] f) The alpha particles, protons or other secondary particles produced in the reaction ionize the detector gas to form ion pairs.

[0071] g) Ions move in the electric field, forming current pulses and outputting voltage pulses as signals.

[0072] h) Use a pulse amplifier to amplify weak current pulses.

[0073] i) Use a shaping circuit to convert the pulse signal into standardized electrical pulses for easy counting.

[0074] j) Connect a digital counter to count the number of pulses per unit time (count rate).

[0075] k) Record the counting data through a computer or data recorder to monitor the neutron radiation intensity in real time.

[0076] l) Convert the count rate to dose rate based on the detector characteristics.

[0077] m) Calculate the cumulative dose and record the total dose within a certain period of time.

[0078] n) Analyze the recorded data and draw a curve showing the change of dose over time.

[0079] o) Generate experimental reports including radiation dosimetry, experimental conditions, measurement results and dose assessment.

[0080] Since the narrow pulse high instantaneous dose rate neutron radiation field has the characteristics of high instantaneous dose rate and small pulse width, its high instantaneous dose rate often lasts for a very short time, which may be only a few microseconds to a few milliseconds. The response time of the counting type neutron dosimeter circuit is usually 15 to 20μs. Only one neutron signal can be recorded within one circuit response time, so there may be a problem of neutron dose rate counting errors. Figure 1 FIG. 1 is a schematic diagram showing a pulse signal waveform for measuring ionizing radiation dose according to an exemplary embodiment. Figure 1 As shown, the dotted waveform represents the neutron pulse of ionizing radiation, and the solid waveform represents the circuit response pulse signal of the neutron dosimeter. It can be seen that two consecutive ionizing radiation neutron pulses only stimulate the circuit response pulse signal of one neutron dosimeter, which means that there is a problem of neutron dose rate counting error.

[0081] In view of this, the embodiments of the present application provide a method and system for measuring ionizing radiation dose based on pulse signals, aiming to solve the above-mentioned problems and improve the accuracy of ionizing radiation measurement results based on pulse signals. The present application is described below with reference to specific embodiments.

[0082] Figure 2 FIG. 1 is a flow chart showing a method for measuring ionizing radiation dose based on a pulse signal according to an exemplary embodiment. Figure 2 As shown, the embodiment of the present application provides a method for measuring ionizing radiation dose based on a pulse signal, which may include the following steps:

[0083] In step S10 , a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is acquired.

[0084] In this step, the pulse signal accuracy performance parameter of the ionizing radiation dose measurement parameter is obtained. For example, a pulse matrix can be constructed according to the sampling period of the pulse signal, and then the pulse signal accuracy performance parameter of the ionizing radiation dose measurement parameter can be obtained based on the pulse matrix.

[0085] In step S20, the parameter control influence of the ionizing radiation dose measurement parameter is obtained according to the pulse signal accuracy performance parameter.

[0086] In this step, the parameter control influence of the ionizing radiation dose measurement parameter is obtained based on the pulse signal accuracy performance parameter. For example, the degree of fluctuation of the radiation dose measurement result can be first obtained, and then the number of pulse signal samples can be obtained. Finally, the parameter control influence of the radiation dose measurement parameter can be obtained based on the pulse signal accuracy performance parameter, the degree of fluctuation, and the number of samples.

[0087] In step S30, the measurement accuracy of the radiation dose measurement result is obtained according to the parameter control influence.

[0088] In this step, the metrological accuracy of the radiation dose measurement result is obtained based on the parameter control influence. For example, the number of sampling periods of the pulse signal can be first obtained, and then the difference between the parameter control influences of any two pulse signals in any sampling period can be obtained. Finally, the metrological accuracy of the radiation dose measurement result can be obtained based on the number of sampling periods of the pulse signal and the difference.

[0089] In step S40, the radiation dose measurement result is processed differently according to the measurement accuracy.

[0090] In this step, the radiation dose measurement results are processed differently based on the measurement accuracy. For example, when the measurement accuracy is greater than or equal to an empirical threshold, the radiation dose measurement result is determined to be accurate, and when the measurement accuracy is less than the empirical threshold, the radiation dose measurement result is determined to be inaccurate. If the radiation dose measurement result is determined to be inaccurate, multiple ionizing radiation dose measurements are repeated, and the average of the multiple measurement results is used as the final measurement result.

[0091] In summary, the embodiments of the present application provide a method for measuring ionizing radiation dose based on a pulse signal, the method comprising: obtaining a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter; obtaining a parameter control influence of the radiation dose measurement parameter based on the pulse signal accuracy performance parameter; obtaining a metrological accuracy of the radiation dose measurement result based on the parameter control influence; and performing different processing on the radiation dose measurement result based on the metrological accuracy. The embodiments of the present application obtain the metrological accuracy of the radiation dose measurement result by analyzing the pulse signal accuracy performance parameter of the ionizing radiation dose measurement parameter and the parameter control influence of the radiation dose measurement parameter, and then performing different processing on the radiation dose measurement result based on the metrological accuracy, thereby improving the accuracy of the ionizing radiation measurement result based on the pulse signal.

[0092] Figure 3 FIG. 1 is a flow chart showing a method for obtaining a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter according to an exemplary embodiment. Figure 3 As shown, the acquisition of the pulse signal accuracy performance parameter of the ionizing radiation dose measurement parameter may include the following steps:

[0093] In step S101 , a pulse matrix is ​​constructed according to the sampling period of the pulse signal.

[0094] In this step, a pulse matrix is ​​constructed according to the sampling period of the pulse signal. For example, multiple pulse signals existing in a single sampling period can be represented as row vectors in time sequence, and then the pulse signals of different sampling periods can be arranged into column vectors in time sequence. Finally, the pulse matrix is ​​constructed using the normalized signal-to-noise ratio of the pulse signal as the matrix element.

[0095] In step S102 , pulse signal accuracy performance parameters of ionizing radiation dose measurement parameters are obtained according to the pulse matrix.

[0096] In this step, pulse signal accuracy performance parameters for ionizing radiation dose measurement parameters are obtained based on the pulse matrix. For example, the cosine similarity between any two row vectors of the pulse matrix can be first obtained, followed by the mean of the cosine similarities between any two row vectors of the pulse matrix. The number of vector pairs formed by the cosine similarities between any two row vectors of the pulse matrix can then be obtained. Finally, the pulse signal accuracy performance parameters for ionizing radiation dose measurement parameters can be obtained based on the cosine similarity, the mean of the cosine similarity, the number of vector pairs, and the matrix elements of the pulse matrix.

[0097] Figure 4 FIG. 1 is a flow chart showing a method for constructing a pulse matrix according to a sampling period of a pulse signal according to an exemplary embodiment. Figure 4 As shown, constructing a pulse matrix according to the sampling period of the pulse signal may include the following steps:

[0098] In step S1011 , multiple pulse signals existing in a single sampling period are represented as row vectors in time sequence.

[0099] In this step, the multiple pulse signals existing in a single sampling period are represented as row vectors in a time sequence. For example, in the process of measuring radiation dose, α particles, protons or other secondary particles are generated when neutrons collide with the nuclear material in the detector. These particles move at high speed in the detector material, collide with the surrounding atoms and ionize, forming ion pairs of positively charged ions and negatively charged electrons. Under the action of the applied electric field, the ions and electrons move toward the positive and negative electrodes respectively, generating current. With the collective movement of the ion pairs, this current forms an instantaneous voltage pulse between the detector electrodes. The generated voltage pulse is amplified by the amplifier, and the digital circuit collects the voltage signal in real time to realize waveform digitization. The multiple pulse signals existing in a single sampling period can be represented as row vectors in a time sequence of the sampling time points of the pulse signals.

[0100] In step S1012 , pulse signals of different sampling periods are arranged into column vectors in a time sequence.

[0101] In this step, the pulse signals of different sampling periods are arranged into column vectors in a time sequence. For example, the pulse signal of the first sampling period can be used as the first row vector of the matrix, the pulse signal of the second sampling period can be used as the second row vector of the matrix, and so on. The pulse signals of different sampling periods can be arranged into column vectors in a time sequence of the sampling time points of the sampling periods.

[0102] In step S1013, the pulse matrix is ​​constructed using the normalized signal-to-noise ratio of the pulse signal as a matrix element.

[0103] In this step, the pulse matrix is ​​constructed with the normalized signal-to-noise ratio of the pulse signal as the matrix element. For example, any matrix element of the pulse matrix can be expressed as the normalized signal-to-noise ratio δ of any pulse signal i,j , where δ i,j =max_min(SNR i,j ), where SNR i,j is the signal-to-noise ratio of the j-th pulse signal of the i-th row vector, and max_min() is the normalized maximum and minimum values ​​within the range of the row vector elements.

[0104] Figure 5 FIG. 1 is a flow chart showing a method for obtaining pulse signal accuracy performance parameters of ionizing radiation dose measurement parameters according to a pulse matrix according to an exemplary embodiment. Figure 5 As shown, obtaining the pulse signal accuracy performance parameter of the ionizing radiation dose measurement parameter according to the pulse matrix may include the following steps:

[0105] In step S1021 , the cosine similarity between any two row vectors of the impulse matrix is ​​obtained.

[0106] In this step, get any two row vectors P of the impulse matrix s and P t The cosine similarity C s,t For example, any two row vectors P of the impulse matrix s and P t The cosine similarity C s,t It can be obtained by the following formula:

[0107] C s,t =cos(P s ,P t ) Formula 1

[0108] Among them, cos() is the cosine similarity function.

[0109] The cosine similarity of any two row vectors of the pulse matrix can represent the similarity of the test results under different sampling periods. When the pulse signal changes more towards instantaneous high pulse performance and the superposition peak is more obvious, the row vector similarity is lower; accordingly, if the two row vectors are more similar, the influence of the detection pulse parameters on the detection results is smaller, and the corresponding detection accuracy control requirements are smaller.

[0110] In step S1022 , the mean value of the cosine similarity between any two row vectors of the impulse matrix is ​​obtained.

[0111] In this step, get any two row vectors P of the impulse matrix s and P t The cosine similarity Cs,t The mean That is, all cosine similarities are averaged, and the cosine similarity mean is recorded as

[0112] In step S1023 , the number of vector pairs consisting of cosine similarities between any two row vectors of the impulse matrix is ​​obtained.

[0113] In this step, the number J of vector pairs consisting of the cosine similarities of any two row vectors of the impulse matrix is ​​obtained.

[0114] In step S1024 , a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is obtained according to the cosine similarity, the mean of the cosine similarity, the number of the vector pairs, and the matrix elements of the pulse matrix.

[0115] In this step, according to the cosine similarity C u , the mean of cosine similarity The number of vector pairs J, and the matrix elements δ of the impulse matrix i,j , obtain the pulse signal accuracy performance parameter MJ of the ionizing radiation dose measurement parameter i,j For example, the pulse signal accuracy performance parameter MJ of the ionizing radiation dose measurement parameter i,j It can be obtained by the following formula:

[0116]

[0117] in, Not zero, u represents the logarithmic sequence of every two row vectors, C u represents the cosine similarity of the u-th pair of row vectors, and || represents the absolute value function.

[0118] It indicates the significant condition of the pulse signal performance in any sampling period. The larger the value, the worse the ability to capture the transient signal performance of the radiation pulse under the current measurement method, and the more abnormal the accuracy of the matrix pulse signal.

[0119] Figure 6 FIG. 1 is a flow chart showing a method for obtaining the parameter control influence of radiation dose measurement parameters according to a pulse signal accuracy performance parameter according to an exemplary embodiment. Figure 6 As shown, obtaining the parameter control influence of the radiation dose measurement parameter according to the pulse signal accuracy performance parameter may include the following steps:

[0120] In step S201 , the degree of fluctuation of the radiation dose measurement result is obtained.

[0121] In this step, the degree of fluctuation of the radiation dose measurement result is obtained. For example, the ratio of the pulse signal accuracy performance parameter of any pulse signal before the jth pulse signal in the i-th pulse signal sampling period to the column parameter corresponding to the any pulse signal can be obtained, where the column parameter is the sequence number of the any pulse signal in the i-th pulse signal sampling period, and i and j are both natural numbers. The mean of the ratios is then obtained, and then the mean of the ratios is used as the degree of fluctuation of the radiation dose measurement result in the i-th pulse signal sampling period.

[0122] In step S202, the number of samples of the pulse signal is obtained.

[0123] In this step, the number R of samples of the pulse signal in any sampling period is obtained.

[0124] In step S203 , the parameter control influence of the radiation dose measurement parameter is obtained according to the pulse signal accuracy performance parameter, the fluctuation degree, and the sample quantity.

[0125] In this step, the parameter MJ is expressed according to the pulse signal accuracy. i,j , fluctuation degree BD, and sample number R, to obtain the parameter control influence CK of the radiation dose measurement parameters in the i-th sampling period i For example, the parameter control influence CK of the radiation dose measurement parameter of the i-th sampling period is i It can be obtained by the following formula:

[0126]

[0127] Wherein, j represents any pulse signal in a sampling period, BD represents the fluctuation degree of radiation dose measurement results in a pulse signal sampling period, MJ i,j Not zero, exp represents the exponential function with the natural constant e as the base. The larger the value of , the greater the parameter control influence CK of the radiation dose measurement parameter of the i-th sampling period. i The smaller; The smaller the value of , the greater the parameter control influence CK of the radiation dose measurement parameter of the i-th sampling period. i The bigger.

[0128] Figure 7 FIG. 1 is a flow chart showing a method for obtaining the degree of fluctuation of radiation dose measurement results according to an exemplary embodiment. Figure 7 As shown, obtaining the fluctuation degree of the radiation dose measurement result may include the following steps:

[0129] In step S2011, obtain the ratio of the pulse signal accuracy performance parameter of any pulse signal before the jth pulse signal in the i-th pulse signal sampling period to the column parameter corresponding to the any pulse signal, where the column parameter is the sorting number of the any pulse signal in the i-th pulse signal sampling period, and i and j are both natural numbers.

[0130] In this step, the pulse signal accuracy performance parameter MJ of the lth pulse signal before (including) the jth pulse signal in the i-th pulse signal sampling period is obtained. i,l The ratio MJ of the column parameter l corresponding to any pulse signal i,l / l, where i and j are both natural numbers and l is not zero.

[0131] In step S2012, the mean of the ratios is obtained.

[0132] In this step, the ratio MJ is obtained i,l The mean value of / l

[0133] In step S2013, the mean of the ratios is used as the degree of fluctuation of the radiation dose measurement result.

[0134] In this step, the ratio MJ i,l The mean value of / l As the fluctuation degree BD of the radiation dose measurement result of the i-th pulse signal sampling period.

[0135] The larger the value of , the greater the influence of the pulse signal performance in the i-th pulse signal sampling period on the test result, and the corresponding control parameter (such as the amplitude of the pulse signal) should have a greater weight in the measurement process.

[0136] Figure 8 FIG. 1 is a flow chart showing a method for obtaining the metrological accuracy of radiation dose measurement results based on parameter control influence according to an exemplary embodiment. Figure 8 As shown, the controlling influence degree according to the parameter to obtain the metrological accuracy of the radiation dose measurement result may include the following steps:

[0137] In step S301 , the number of sampling periods of the pulse signal is obtained.

[0138] In this step, the number r of sampling periods of the pulse signal is acquired.

[0139] In step S302, the difference between the parameter control influences of any two pulse signals in any sampling period is obtained.

[0140] In this step, the difference ΔCK of the parameter control influence of any two randomly selected pulse signals in any sampling period i is obtained. i .

[0141] In step S303 , the measurement accuracy of the radiation dose measurement result is obtained according to the number of sampling periods of the pulse signal and the difference.

[0142] In this step, according to the number r of sampling cycles of the pulse signal and the difference ΔCK i , obtain the metrological accuracy JJ of the radiation dose measurement result. Exemplarily, the metrological accuracy JJ of the radiation dose measurement result can be obtained by the following formula:

[0143]

[0144] Among them, max(ΔCK i ) represents the difference ΔCK between the parameter control influence of any two pulse signals in any sampling period i i The maximum value of , max_min() represents the normalization processing of the maximum and minimum values.

[0145] It can represent the overall cumulative difference in ionizing radiation detection results of all sampling periods.

[0146] Figure 9 FIG. 1 is a flow chart showing a method for performing different processing on radiation dose measurement results according to measurement accuracy according to an exemplary embodiment. Figure 9 As shown, performing different processing on the radiation dose measurement results according to the measurement accuracy may include the following steps:

[0147] In step S401, when the measurement accuracy is greater than or equal to an empirical threshold, it is determined that the radiation dose measurement result is accurate.

[0148] In this step, when the measurement accuracy JJ is greater than or equal to an empirical threshold (eg, 0.95), the radiation dose measurement result is determined to be accurate.

[0149] In step S402, when the measurement accuracy is less than the empirical threshold, it is determined that the radiation dose measurement result is inaccurate.

[0150] In this step, when the measurement accuracy JJ is less than an empirical threshold (eg, 0.95), the radiation dose measurement result is determined to be inaccurate.

[0151] Figure 10 FIG. 1 is a flow chart showing another method for processing radiation dose measurement results in different ways according to measurement accuracy according to an exemplary embodiment. Figure 10 As shown, performing different processing on the radiation dose measurement results according to the measurement accuracy may further include the following steps:

[0152] In step S403, when it is determined that the radiation dose measurement result is inaccurate, the ionizing radiation dose measurement is repeated multiple times, and the average of the results of the multiple measurements is used as the final measurement result.

[0153] In this step, if the radiation dose measurement result is determined to be inaccurate, the ionizing radiation dose measurement is repeated multiple times, and the average of the results of the multiple measurements is used as the final measurement result.

[0154] The present application also provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the steps of the pulse signal-based ionizing radiation dose measurement method provided in the present application are implemented.

[0155] Figure 11 FIG. 1 is a block diagram of a pulse signal-based ionizing radiation dose measurement system according to an exemplary embodiment. Figure 11 As shown, an embodiment of the present application provides an ionizing radiation dose measurement system 1100 based on a pulse signal, including a measurement platform 1200 .

[0156] Figure 12 1 is a block diagram of a measurement platform according to an exemplary embodiment. For example, the measurement platform 1200 can be provided as a server. Figure 12 The measurement platform 1200 includes a processor 1222, which further includes one or more processors and a memory resource represented by a memory 1232 for storing instructions executable by the processor 1222, such as an application. The application stored in the memory 1232 may include one or more modules, each corresponding to a set of instructions. In addition, the processor 1222 is configured to execute the instructions to perform the above-mentioned pulse signal-based ionizing radiation dose measurement method.

[0157] The measurement platform 1200 may further include a power supply component 1226 configured to perform power management of the measurement platform 1200, a communication component 1250 configured to connect the measurement platform 1200 to a network, and an input / output interface 1258. The measurement platform 1200 may operate based on an operating system stored in the memory 1232.

[0158] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program that can be executed by a programmable electronic device, and the computer program has a code portion for executing the above-mentioned pulse signal-based ionizing radiation dose measurement method when executed by the programmable electronic device.

[0159] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. A method for measuring ionizing radiation dose based on a pulse signal, characterized in that: The method comprises: Obtain pulse signal accuracy performance parameters for ionizing radiation dose measurement parameters; obtaining a parameter control influence degree of the ionizing radiation dose measurement parameter according to the pulse signal accuracy performance parameter; Controlling the influence of the parameters to obtain the metrological accuracy of the radiation dose measurement result; The radiation dose measurement results are processed differently according to the measurement accuracy.

2. The method for measuring ionizing radiation dose based on pulse signals according to claim 1, wherein: The pulse signal accuracy performance parameters for obtaining ionizing radiation dose measurement parameters include: Constructing a pulse matrix according to a sampling period of the pulse signal; According to the pulse matrix, a pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is obtained.

3. The method for measuring ionizing radiation dose based on pulse signals according to claim 2, wherein: The constructing of a pulse matrix according to the sampling period of the pulse signal includes: Represent multiple pulse signals existing in a single sampling period as row vectors in time sequence; Arrange the pulse signals of different sampling periods into column vectors according to the time sequence; The pulse matrix is ​​constructed with the normalized signal-to-noise ratio of the pulse signal as a matrix element.

4. The method for measuring ionizing radiation dose based on pulse signals according to claim 2, wherein: The step of obtaining pulse signal accuracy performance parameters of ionizing radiation dose measurement parameters according to the pulse matrix includes: Obtaining the cosine similarity of any two row vectors of the impulse matrix; Obtaining the mean of the cosine similarity between any two row vectors of the impulse matrix; Obtaining the number of vector pairs consisting of cosine similarities of any two row vectors of the pulse matrix; A pulse signal accuracy performance parameter of an ionizing radiation dose measurement parameter is obtained according to the cosine similarity, the mean of the cosine similarity, the number of the vector pairs, and the matrix elements of the pulse matrix.

5. The method for measuring ionizing radiation dose based on pulse signals according to claim 1, wherein: The obtaining, based on the pulse signal accuracy performance parameter, the parameter control influence of the ionizing radiation dose measurement parameter includes: Obtaining a degree of fluctuation of the radiation dose measurement result; Obtaining the number of samples of the pulse signal; The parameter control influence of the radiation dose measurement parameter is obtained according to the pulse signal accuracy performance parameter, the fluctuation degree, and the sample quantity.

6. The method for measuring ionizing radiation dose based on pulse signals according to claim 5, wherein: The obtaining of the fluctuation degree of the radiation dose measurement result includes: Obtaining a ratio of a pulse signal accuracy performance parameter of any pulse signal before the jth pulse signal in the i-th pulse signal sampling period to a column parameter corresponding to the any pulse signal, where the column parameter is a sequence number of the any pulse signal in the i-th pulse signal sampling period, and i and j are both natural numbers; obtaining a mean of the ratios; The mean of the ratios is taken as the degree of fluctuation of the radiation dose measurement result.

7. The method for measuring ionizing radiation dose based on pulse signals according to claim 1, wherein: The controlling the influence degree according to the parameter to obtain the measurement accuracy of the radiation dose measurement result includes: Obtaining the number of sampling periods of the pulse signal; Obtain the difference in parameter control influence between any two pulse signals in any sampling period; The metrological accuracy of the radiation dose measurement result is obtained according to the number of sampling periods of the pulse signal and the difference.

8. The method for measuring ionizing radiation dose based on pulse signals according to claim 1, wherein: The step of performing different processing on the radiation dose measurement result according to the measurement accuracy includes: When the measurement accuracy is greater than or equal to an empirical threshold, the radiation dose measurement result is determined to be accurate; When the measurement accuracy is less than the empirical threshold, it is determined that the radiation dose measurement result is inaccurate.

9. The method for measuring ionizing radiation dose based on pulse signals according to claim 8, wherein: The performing different processing on the radiation dose measurement result according to the measurement accuracy further includes: If the radiation dose measurement result is determined to be inaccurate, the ionizing radiation dose measurement is repeated multiple times, and the average of the results of the multiple measurements is used as the final measurement result.

10. An ionizing radiation dose measurement system based on a pulse signal, characterized in that: The system includes a measurement platform, which includes: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 9.

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