CN114186661B - Method and device for determining target dose rate and computer readable storage medium - Google Patents
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Abstract
The application provides a method and a device for determining a target dose rate and a readable storage medium, and belongs to the technical field of data detection. The method comprises the following steps: obtaining a target counting rate; determining a target counting rate range corresponding to the target counting rate in a piecewise function, wherein the piecewise function is used for indicating the dose rates corresponding to different counting rates, the dose rates are the doses of radiation received by the nuclear radiation monitoring equipment in unit time, and the target counting rate range comprises a minimum counting rate and a maximum counting rate at an end point; determining a target correction coefficient of a target counting rate range in the piecewise function, wherein the target correction coefficient is obtained through a maximum dose rate corresponding to the maximum counting rate, a minimum dose rate corresponding to the minimum counting rate and the target counting rate range; and determining a target dosage rate corresponding to the target counting rate according to the target correction coefficient, the minimum counting rate, the minimum dosage rate and the target counting rate. The application improves the accuracy of the target dose rate.
Description
Technical Field
The present application relates to the field of nuclear radiation monitoring technology, and in particular, to a method and apparatus for determining a target dose rate, and a computer readable storage medium.
Background
The nuclear radiation detector is also called as radiation detector, its core component is a sensor, and is mainly used for converting various physical and chemical variable information to be detected into measurable electric signal, then transferring it into chip to make calculation so as to obtain radiation dose value. The nuclear radiation detector dosimeter uses a geiger-mueller counter tube to measure radiation, and each time a ray passes through the GM tube and causes ionization, the GM tube produces a detection current pulse, each pulse is detected by the valve circuit and recorded as a count, and the display value of the dosimeter is the count value in the mode you selected. Because of the random nature of radioactivity, the count value detected by the dosimeter varies from minute to minute, with the readings being more accurate when taken over an average period of time, and more accurate when the time interval taken is longer.
Because the nuclear radiation detector adopts the chip to obtain the dosage value of the count value, the chip can be influenced by other factors such as current, voltage and the like, so that the accuracy of the dosage value is caused, and the dosage value is inaccurate.
Disclosure of Invention
An embodiment of the application aims to provide a method and a device for determining a target dose rate and a readable storage medium, so as to solve the problem of inaccurate dose value. The specific technical scheme is as follows:
in a first aspect, there is provided a method of determining a target dose rate, the method comprising:
obtaining a target counting rate, wherein the target counting rate is an average counting rate of points to be detected by nuclear radiation monitoring equipment;
determining a target counting rate range corresponding to the target counting rate in a piecewise function, wherein the piecewise function is used for indicating the dose rates corresponding to different counting rates, the dose rates are the doses of radiation received by the nuclear radiation monitoring equipment in unit time, and the target counting rate range comprises a minimum counting rate and a maximum counting rate at end points;
determining a target correction coefficient of the target counting rate range in the piecewise function, wherein the target correction coefficient is obtained through a maximum dose rate corresponding to the maximum counting rate, a minimum dose rate corresponding to the minimum counting rate and the target counting rate range;
and determining a target dose rate corresponding to the target counting rate according to the target correction coefficient, the minimum counting rate, the minimum dose rate and the target counting rate.
Optionally, the determining, according to the target correction coefficient, the minimum count rate, the minimum dose rate, and the target count rate, a target dose rate corresponding to the target count rate includes:
determining a count rate difference between the target count rate and the minimum count rate;
taking the product of the target correction coefficient and the counting rate difference value as a dose rate height corresponding to the counting rate difference value, wherein the dose rate height is used for indicating an ordinate height difference value corresponding to the counting rate difference value in the piecewise function;
and taking the sum value of the dose rate height and the minimum dose rate as a target dose rate corresponding to the target counting rate.
Optionally, the calculation formula of the target dose rate is:
F(X)＝(F(X2)-F(X1))/(X2-X1)*(X-X1)+F(X1)，
wherein F (X) is a target dose rate, X1 is a minimum count rate, F (X1) is a minimum dose rate, X2 is a maximum count rate, F (X2) is a maximum dose rate, X is a target count rate, (F (X2) -F (X1))/(X2-X1) is a target correction coefficient.
Optionally, before determining that the target count rate is within the corresponding target count rate range in the piecewise function, the method further includes:
obtaining sample scale points, wherein the sample scale points comprise a sample counting rate and a sample dosage rate corresponding to the sample counting rate;
inserting the sample scale points into a sample function according to a preset sequence, wherein the sample function comprises at least one existing scale point, the existing scale point comprises an existing counting rate and an existing dosage rate, and the preset sequence is the sequence in which the sample counting rate and the existing counting rate are arranged according to the size;
determining a contiguous count rate of the sample count rates, wherein the contiguous count rate is at least one count rate at which the sample count rates are adjacent in the sample function;
updating the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate;
and under the condition that the number of the sample counting rates reaches a preset number threshold, determining the piecewise function according to the updated existing scale points.
Optionally, said updating existing scale points in said sample function according to said sample count rate and said adjacency count rate comprises:
determining a sample scale factor of the sample counting rate and an adjacent scale factor of an adjacent counting rate, wherein the scale factor is obtained according to a quotient of the dose rate and the corresponding counting rate, the adjacent counting rate corresponds to the adjacent dose rate, and the adjacent counting rate and the adjacent dose rate form an adjacent scale point;
determining whether the sample scale points meet a preset condition according to the magnitude relation between the sample count rate and the adjacent count rate and the magnitude relation between the sample scale coefficients and the adjacent scale coefficients, wherein the preset condition is that the larger the count rate is, the larger the scale coefficients are;
and under the condition that the sample scale points meet the preset condition, updating the existing scale points in the sample function according to whether the sample scale coefficients and the adjacent scale coefficients meet the counting deviation condition.
Optionally, the updating the existing scale points in the sample function according to whether the sample scale coefficient and the adjacent scale coefficient meet a count deviation condition includes:
determining a scale factor difference between a sample scale factor and the adjacent scale factor;
taking the quotient of the difference value of the scale factors and the adjacent scale factors as a counting deviation rate;
under the condition that the counting deviation rate is in an abnormal range, reserving the sample scale points and deleting the adjacent scale points;
and when the counting deviation rate is out of an abnormal range, reserving the sample scale point and the adjacent scale point.
Optionally, after determining whether the sample scale point meets a preset condition, the method further includes:
and under the condition that the sample scale points do not meet the preset condition, reserving the sample scale points and deleting the adjacent scale points.
Optionally, the first adjacency count rate includes a first adjacency count rate and a second adjacency count rate, where the first adjacency count rate is smaller than the second adjacency count rate, and deleting the adjacency scale point if the sample scale point does not meet the preset condition includes:
deleting the first adjacent count rate and a first sub-adjacent dose rate corresponding to the first adjacent count rate under the condition that the scale coefficient corresponding to the first adjacent count rate is larger than the sample scale coefficient;
and deleting the second adjacent count rate and a second sub-adjacent dose rate corresponding to the second adjacent count rate under the condition that the scale coefficient corresponding to the second adjacent count rate is smaller than the sample scale coefficient.
In a second aspect, there is provided a device for determining a target dose rate, the device comprising:
the acquisition module is used for acquiring a target counting rate, wherein the target counting rate is an average counting rate of points to be detected by the nuclear radiation monitoring equipment;
a determining module, configured to determine a target count rate range corresponding to the target count rate in a piecewise function, where the piecewise function is used to indicate dose rates corresponding to different count rates, the dose rates being doses of radiation received by the nuclear radiation monitoring device in a unit duration, and the target count rate range includes a minimum count rate and a maximum count rate at an endpoint;
the determining module is used for determining a target correction coefficient of the target counting rate range in the piecewise function, wherein the target correction coefficient is obtained through a maximum dose rate corresponding to the maximum counting rate, a minimum dose rate corresponding to the minimum counting rate and the target counting rate range;
and the third determining module is used for determining a target dosage rate corresponding to the target counting rate according to the target correction coefficient, the minimum counting rate, the minimum dosage rate and the target counting rate.
In a third aspect, an electronic device is provided, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and the processor is used for realizing any of the steps of the target dose rate determination method when executing the program stored in the memory.
In a fourth aspect, a computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, realizes any of the method steps of determining a target dose rate.
The embodiment of the application has the beneficial effects that:
in the application, the nuclear radiation monitoring equipment inputs the target counting rate into the piecewise function, determines the target counting rate range of the target counting rate, then determines the target correction coefficient of the target counting rate range in the piecewise function, and obtains the dose rate height corresponding to the counting rate difference value according to the counting rate difference value between the target counting rate and the minimum counting rate through the target correction coefficient, wherein the sum of the dose rate height and the minimum dose rate is the target dose rate corresponding to the target counting rate. According to the application, the target dosage rate is determined through the piecewise function, so that other factors are prevented from influencing the target dosage rate, and the accuracy of the target dosage rate is improved.
Of course, not all of the above advantages need be achieved simultaneously in the practice of any one product or method of the present application.
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In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a hardware environment of a method for determining a target dose rate according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for determining a target dose rate according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a device for determining a target dose rate according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.
In order to solve the problems mentioned in the background art, according to an aspect of the embodiments of the present application, an embodiment of a method of determining a target dose rate is provided.
Alternatively, in the embodiment of the present application, the above-described method for determining the target dose rate may be applied to a hardware environment formed by the nuclear radiation monitoring apparatus 101 and the server 103 as shown in fig. 1. As shown in fig. 1, the server 103 is connected to the nuclear radiation monitoring apparatus 101 through a network, which may be used to provide services to a terminal or a client installed on the terminal, and a database 105 may be provided on the server or independent of the server, for providing data storage services to the server 103, where the network includes, but is not limited to: a wide area network, a metropolitan area network, or a local area network.
A method for determining a target dose rate in an embodiment of the present application may be performed by the nuclear radiation monitoring apparatus 101, for improving accuracy of the target dose rate corresponding to the target count rate.
The method for determining the target dose rate according to the embodiment of the present application will be described in detail with reference to the following specific embodiments, as shown in fig. 2, and the specific steps are as follows:
step 201: and obtaining a target counting rate.
The target counting rate is an average counting rate at a point to be detected by the nuclear radiation monitoring equipment.
In the embodiment of the application, the to-be-measured point continuously emits radioactive particles, and the nuclear radiation monitoring equipment is used for detecting the average counting rate at the to-be-measured point, namely the target counting rate. The server obtains a target count rate for the nuclear radiation monitoring device. Wherein the count rate is in cps. The nuclear radiation detection device may be a nuclear radiation detector.
Step 202: and determining a corresponding target counting rate range of the target counting rate in the piecewise function.
The piecewise function is used for indicating the corresponding dose rates of different counting rates, wherein the dose rates are the doses of the received radiation of the nuclear radiation monitoring equipment in unit time, and the target counting rate range comprises a minimum counting rate and a maximum counting rate at the end points.
In the embodiment of the application, the piecewise function comprises a multi-section linear function, each two scale points in the piecewise function form a section linear function, each scale point comprises a counting rate on an x axis and a dose rate on a y axis, and the dose rate is the dose of radiation received by the nuclear radiation monitoring equipment in unit time.
After the server acquires the target counting rate, determining a corresponding target counting rate range of the target counting rate in the piecewise function, wherein the target counting rate range comprises two endpoints which are respectively the minimum counting rate and the maximum counting rate of the target counting rate range. Wherein the unit of dose rate is usv/h.
Step 203: and determining a target correction coefficient of the target counting rate range in the piecewise function.
The target correction coefficient is obtained through a maximum dose rate corresponding to the maximum counting rate, a minimum dose rate corresponding to the minimum counting rate and a target counting rate range.
In the piecewise function, the maximum count rate corresponds to the maximum dose rate, the minimum count rate corresponds to the minimum dose rate, the server determines a dose rate difference between the maximum dose rate and the minimum dose rate, then determines a count rate difference between the maximum count rate and the minimum count rate, takes a quotient of the dose rate difference and the count rate difference as a target correction coefficient, and the target correction coefficient is substantially a slope corresponding to a target count rate range in the piecewise function.
Step 204: and determining a target dosage rate corresponding to the target counting rate according to the target correction coefficient, the minimum counting rate, the minimum dosage rate and the target counting rate.
The server determines a counting rate difference value between a target counting rate and a minimum counting rate, then takes the product of a target correction coefficient and the counting rate difference value as a corresponding dosage rate height of the counting rate difference value, wherein the dosage rate height is used for indicating a corresponding ordinate height difference value of the counting rate difference value in the piecewise function, and finally takes the sum value of the dosage rate height and the minimum dosage rate as a target dosage rate corresponding to the target counting rate.
The calculation formula of the target dose rate is as follows:
F(X)＝(F(X2)-F(X1))/(X2-X1)*(X-X1)+F(X1)，
wherein F (X) is a target dose rate, X1 is a minimum count rate, F (X1) is a minimum dose rate, X2 is a maximum count rate, F (X2) is a maximum dose rate, X is a target count rate, (F (X2) -F (X1))/(X2-X1) is a target correction coefficient.
In the application, the nuclear radiation monitoring equipment inputs the target counting rate into the piecewise function, determines the target counting rate range of the target counting rate, then determines the target correction coefficient of the target counting rate range in the piecewise function, and obtains the dose rate height corresponding to the counting rate difference value according to the counting rate difference value between the target counting rate and the minimum counting rate through the target correction coefficient, wherein the sum of the dose rate height and the minimum dose rate is the target dose rate corresponding to the target counting rate. According to the application, the target dosage rate is determined through the piecewise function, so that other factors are prevented from influencing the target dosage rate, and the accuracy of the target dosage rate is improved.
As an alternative embodiment, before determining that the target count rate is within the corresponding target count rate range in the piecewise function, the piecewise function is obtained by: obtaining sample scale points, wherein the sample scale points comprise sample counting rates and sample dose rates corresponding to the sample counting rates; inserting sample scale points into a sample function according to a preset sequence, wherein the sample function comprises at least one existing scale point, the existing scale point comprises an existing counting rate and an existing dosage rate, and the preset sequence is the sequence in which the sample counting rate and the existing counting rate are arranged according to the size; determining a contiguous count rate of the sample count rates, wherein the contiguous count rate is at least one count rate of the sample count rates that are contiguous in the sample function; updating the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate; and under the condition that the number of the sample counting rates reaches a preset number threshold, determining a piecewise function according to the updated existing scale points.
In the embodiment of the application, a two-dimensional sample function exists in the nuclear radiation monitoring equipment, the sample function comprises at least one existing scale point, the existing scale point comprises an existing counting rate and an existing dose rate, if the number of the existing scale points is one, the existing scale point is an origin (0, 0) of the sample function, and if the number of the existing scale points is a plurality, the existing scale point also comprises other scale points except the origin.
The nuclear radiation monitoring device acquires sample scale points, wherein the sample scale points comprise a sample count rate and a sample dose rate corresponding to the sample count rate. The nuclear radiation monitoring device inserts the sample scale points into the sample function according to the sequence of the sample counting rate and the existing counting rate, so as to obtain the adjacent counting rate of the sample counting rate, wherein the number of the adjacent counting rates is at least one, and the adjacent counting rate can be one adjacent counting rate smaller than the sample counting rate, can be one adjacent counting rate larger than the sample counting rate, and can be two adjacent counting rates on two sides of the sample counting rate. The nuclear radiation monitoring equipment updates the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate, so that an updated sample function is obtained, and when the number of the acquired sample counting rates reaches a preset number threshold, the nuclear radiation monitoring equipment determines a piecewise function according to the updated existing scale points. Illustratively, the preset number threshold is 10, and the preset number threshold is not particularly limited by the present application.
In the application, the nuclear radiation monitoring equipment updates the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate, thereby obtaining an updated sample function, namely a piecewise function, so as to ensure that the scale points in the piecewise function are correct, and the accuracy of the target dose rate can be improved by adopting the piecewise function.
As an alternative embodiment, updating the existing scale points in the sample function based on the sample count rate and the adjacency count rate comprises: determining a sample scale factor of a sample counting rate and an adjacent scale factor of an adjacent counting rate, wherein the scale factor is obtained according to a quotient of the dose rate and the corresponding counting rate, the adjacent counting rate corresponds to the adjacent dose rate, and the adjacent counting rate and the adjacent dose rate form an adjacent scale point; determining whether a sample scale point meets a preset condition according to the size relation between the sample count rate and the adjacent count rate and the size relation between the sample scale coefficient and the adjacent scale coefficient, wherein the preset condition is that the larger the count rate is, the larger the scale coefficient is; under the condition that the sample scale points meet the preset conditions, the existing scale points in the sample function are updated according to whether the sample scale coefficients and the adjacent scale coefficients meet the counting deviation conditions.
In the embodiment of the application, after the sample counting rate and the existing counting rate are arranged according to the order of magnitude, the adjacent counting rate of the sample counting rate is the adjacent counting rate, the adjacent counting rate corresponds to the adjacent dose rate, the adjacent counting rate and the adjacent dose rate form the adjacent scale point, and the number of the adjacent counting rates is one or two.
The quotient of the dose rate and the corresponding counting rate is the corresponding scale factor of the dose rate, and then the sample scale factor of the sample counting rate is obtained by the following formula: sample scale factor = sample dose rate/sample count rate, the derived formula for the adjacent scale factor for the adjacent count rate is: adjacency scale factor = adjacency dose rate/adjacency count rate.
The nuclear radiation monitoring equipment judges whether the sample scale points meet preset conditions, and the larger the counting rate is, the larger the scale coefficient is. That is, if the number of adjacent count rates is one and the adjacent count rate is smaller than the sample count rate, then the adjacent scale factor should also be smaller than the sample scale factor; if the number of adjacent count rates is two, then the adjacent scale factor for an adjacent count rate that is less than the sample count rate should also be less than the sample scale factor, and the adjacent scale factor for an adjacent count rate that is greater than the sample count rate should also be greater than the sample scale factor.
The nuclear radiation monitoring equipment firstly determines the size relation between the sample counting rate and the adjacent counting rate, then determines whether the sample scale coefficient and the adjacent scale coefficient also meet the size relation, and if not, considers that the sample scale points do not meet the preset condition; if yes, the sample scale points are considered to meet the preset conditions.
If the sample scale points do not meet the preset conditions, the sample scale points are reserved, and the adjacent scale points are deleted. Specifically, if the sample scale point does not meet the preset condition, it is considered that the newly incorporated sample scale point is correct and the previously existing adjacent scale point is wrong, so the nuclear radiation monitoring device retains the sample scale point and deletes the adjacent scale point.
If the sample scale points meet the preset conditions, continuing to determine whether the sample scale coefficients and the adjacent scale coefficients meet the counting deviation conditions. If the counting deviation condition is not met, reserving sample scale points, and deleting adjacent scale points; and if the counting deviation condition is met, reserving the sample scale points and the adjacent scale points.
As an alternative embodiment, determining that the sample scale factor and the adjacent scale factor do not satisfy the count deviation condition, deleting the adjacent scale point includes: determining a scale factor difference between the sample scale factor and the adjacent scale factor; taking the quotient of the difference value of the scale factors and the adjacent scale factors as the counting deviation rate; under the condition that the counting deviation rate is in an abnormal range, reserving sample scale points and deleting adjacent scale points; in the case that the count deviation rate is out of the abnormal range, the sample scale point and the adjacent scale point are reserved.
The nuclear radiation monitoring equipment determines a counting deviation rate, and a calculation formula of the counting deviation rate is as follows:
(sample scale factor-adjacent scale factor)/adjacent scale factor.
If the nuclear radiation monitoring equipment determines that the counting deviation rate is in the abnormal range, reserving sample scale points and deleting adjacent scale points; and if the counting deviation rate exceeds the abnormal range, reserving a sample scale point and an adjacent scale point.
Illustratively, the anomaly range n is-1% to 1%, if-1% ≤ n ≤ 1, reserving sample scale points and deleting adjacent scale points; if n is more than 1% or n is less than 1%, the sample scale points and the adjacent scale points are reserved.
In the application, whether the sample scale points meet the preset condition is judged by the size relation between the sample scale coefficients and the adjacent scale coefficients, and whether the adjacent scale points are deleted is also determined by the counting deviation rate.
As an optional implementation manner, the number of adjacent count rates is two, and the number of adjacent count rates respectively includes a first adjacent count rate and a second adjacent count rate, where the first adjacent count rate is smaller than the second adjacent count rate, and deleting the adjacent scale point if the sample scale point does not meet the preset condition includes: if the scale factor corresponding to the first adjacent count rate is larger than the sample scale factor, deleting the first adjacent count rate and the first adjacent dose rate corresponding to the first adjacent count rate; and deleting the second adjacent count rate and the second adjacent dose rate corresponding to the second adjacent count rate if the scale factor corresponding to the second adjacent count rate is smaller than the sample scale factor.
Optionally, the embodiment of the application further provides a process flow chart of a method for determining the target dose rate, which comprises the following specific steps.
Step 1: acquiring sample scale points, wherein the sample scale points comprise a sample count rate cps Sample And a sample dose rate, a sample scale factor k for determining a sample count rate Sample 。
Step 2: sample scale points are inserted into the sample function in order of cps from small to large.
Step 3: determining a contiguous count rate cps for a sample count rate Adjacent to And an adjacency scale factor k of adjacency count rate Adjacent to 。
Step 4: according to cps Adjacent to With cps Sample The size relationship between, and k Adjacent to And k is equal to Sample And (3) determining whether the sample scale points meet the preset conditions or not according to the size relation, if so, executing the step (5), and if not, executing the step (8).
Step 5: if cps Adjacent to <cps Sample And k is Adjacent to <k Sample And cps Adjacent to >cps Sample And k is Adjacent to >k Sample The sample graduation points and the adjoining graduation points are preserved.
Step 6: count deviation rate n= (k) for determining sample count rate Sample -k Adjacent to )/k Adjacent to 。
Step 7: if n is more than or equal to-1% and less than or equal to 1%, reserving sample scale points and deleting adjacent scale points; if n is more than 1% or n is less than 1%, the sample scale points and the adjacent scale points are reserved.
Step 8: if cps Adjacent to <cps Sample And k is Adjacent to >k Sample Or cps of Adjacent to >cps Sample And k is Adjacent to <k Sample And reserving sample scale points and deleting adjacent scale points.
Based on the same technical concept, the embodiment of the application further provides a device for determining the target dose rate, as shown in fig. 3, where the device includes:
the acquisition module 301 is configured to acquire a target count rate, where the target count rate is an average count rate at a point to be detected by the nuclear radiation monitoring device;
a determining module 302, configured to determine a target count rate range corresponding to a target count rate in a piecewise function, where the piecewise function is used to indicate dose rates corresponding to different count rates, the dose rates being doses of radiation received by the nuclear radiation monitoring device in a unit duration, and the target count rate range includes a minimum count rate and a maximum count rate at an endpoint;
a determining module 303, configured to determine a target correction coefficient of the target count rate range in the piecewise function, where the target correction coefficient is obtained by a maximum dose rate corresponding to the maximum count rate, a minimum dose rate corresponding to the minimum count rate, and a target count rate range;
the third determining module 304 is configured to determine a target dose rate corresponding to the target count rate according to the target correction coefficient, the minimum count rate, the minimum dose rate, and the target count rate.
Optionally, the third determining module 304 is configured to:
determining a count rate difference between the target count rate and the minimum count rate;
taking the product of the target correction coefficient and the counting rate difference value as a dose rate height corresponding to the counting rate difference value, wherein the dose rate height is used for indicating a ordinate height difference value corresponding to the counting rate difference value in the piecewise function;
and taking the sum of the dose rate height and the minimum dose rate as a target dose rate corresponding to the target counting rate.
Optionally, the calculation formula of the target dose rate is:
F(X)＝(F(X2)-F(X1))/(X2-X1)*(X-X1)+F(X1)，
wherein F (X) is a target dose rate, X1 is a minimum count rate, F (X1) is a minimum dose rate, X2 is a maximum count rate, F (X2) is a maximum dose rate, X is a target count rate, (F (X2) -F (X1))/(X2-X1) is a target correction coefficient.
Optionally, the device is further configured to:
obtaining sample scale points, wherein the sample scale points comprise sample counting rates and sample dose rates corresponding to the sample counting rates;
inserting sample scale points into a sample function according to a preset sequence, wherein the sample function comprises at least one existing scale point, the existing scale point comprises an existing counting rate and an existing dosage rate, and the preset sequence is the sequence in which the sample counting rate and the existing counting rate are arranged according to the size;
determining a contiguous count rate of the sample count rates, wherein the contiguous count rate is at least one count rate of the sample count rates that are contiguous in the sample function;
updating the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate;
and under the condition that the number of the sample counting rates reaches a preset number threshold, determining a piecewise function according to the updated existing scale points.
Optionally, the device is further configured to:
updating the existing scale points in the sample function based on the sample count rate and the adjacency count rate includes:
determining a sample scale factor of a sample counting rate and an adjacent scale factor of an adjacent counting rate, wherein the scale factor is obtained according to a quotient of the dose rate and the corresponding counting rate, the adjacent counting rate corresponds to the adjacent dose rate, and the adjacent counting rate and the adjacent dose rate form an adjacent scale point;
determining whether a sample scale point meets a preset condition according to the size relation between the sample count rate and the adjacent count rate and the size relation between the sample scale coefficient and the adjacent scale coefficient, wherein the preset condition is that the larger the count rate is, the larger the scale coefficient is;
under the condition that the sample scale points meet the preset conditions, the existing scale points in the sample function are updated according to whether the sample scale coefficients and the adjacent scale coefficients meet the counting deviation conditions.
Optionally, the device is further configured to:
updating the existing scale points in the sample function according to whether the sample scale coefficient and the adjacent scale coefficient meet the counting deviation condition comprises:
determining a scale factor difference between the sample scale factor and the adjacent scale factor;
taking the quotient of the difference value of the scale factors and the adjacent scale factors as the counting deviation rate;
under the condition that the counting deviation rate is in an abnormal range, reserving sample scale points and deleting adjacent scale points;
in the case that the count deviation rate is out of the abnormal range, the sample scale point and the adjacent scale point are reserved.
Optionally, the device is further configured to:
and under the condition that the sample scale points do not meet the preset conditions, reserving the sample scale points and deleting the adjacent scale points.
Optionally, the device is further configured to:
the first adjacency count rate includes a first adjacency count rate and a second adjacency count rate, wherein the first adjacency count rate is smaller than the second adjacency count rate, and deleting the adjacency scale points includes:
deleting the first adjacent count rate and a first sub-adjacent dose rate corresponding to the first adjacent count rate under the condition that the scale coefficient corresponding to the first adjacent count rate is larger than the sample scale coefficient;
and deleting the second adjacent count rate and the second sub-adjacent dose rate corresponding to the second adjacent count rate when the scale factor corresponding to the second adjacent count rate is smaller than the sample scale factor.
There is also provided in accordance with yet another aspect of an embodiment of the present application a computer readable storage medium having non-volatile program code executable by a processor.
Optionally, in an embodiment of the present application, a computer readable storage medium is configured to store program code for the processor to perform the above method;
the foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A method of determining a target dose rate, the method comprising:
obtaining a target counting rate, wherein the target counting rate is an average counting rate of points to be detected by nuclear radiation monitoring equipment;
determining a target counting rate range corresponding to the target counting rate in a piecewise function, wherein the piecewise function is used for indicating the dose rates corresponding to different counting rates, the dose rates are the doses of radiation received by the nuclear radiation monitoring equipment in unit time, and the target counting rate range comprises a minimum counting rate and a maximum counting rate at end points;
determining a target correction coefficient of the target counting rate range in the piecewise function, wherein the target correction coefficient is obtained through a maximum dose rate corresponding to the maximum counting rate, a minimum dose rate corresponding to the minimum counting rate and the target counting rate range;
determining a target dose rate corresponding to the target count rate according to the target correction coefficient, the minimum count rate, the minimum dose rate and the target count rate;
before determining that the target count rate is within the corresponding target count rate range in the piecewise function, the method further includes:
obtaining sample scale points, wherein the sample scale points comprise a sample counting rate and a sample dosage rate corresponding to the sample counting rate;
inserting the sample scale points into a sample function according to a preset sequence, wherein the sample function comprises at least one existing scale point, the existing scale point comprises an existing counting rate and an existing dosage rate, and the preset sequence is the sequence in which the sample counting rate and the existing counting rate are arranged according to the size;
determining a contiguous count rate of the sample count rates, wherein the contiguous count rate is at least one count rate at which the sample count rates are adjacent in the sample function;
updating the existing scale points in the sample function according to the sample counting rate and the adjacent counting rate;
under the condition that the number of the sample counting rates reaches a preset number threshold, determining the piecewise function according to updated existing scale points;
said updating existing scale points in said sample function based on said sample count rate and said adjacency count rate comprises:
determining a sample scale factor of the sample counting rate and an adjacent scale factor of an adjacent counting rate, wherein the scale factor is obtained according to a quotient of the dose rate and the corresponding counting rate, the adjacent counting rate corresponds to the adjacent dose rate, and the adjacent counting rate and the adjacent dose rate form an adjacent scale point;
determining whether the sample scale points meet a preset condition according to the magnitude relation between the sample count rate and the adjacent count rate and the magnitude relation between the sample scale coefficients and the adjacent scale coefficients, wherein the preset condition is that the larger the count rate is, the larger the scale coefficients are;
under the condition that the sample scale points meet the preset conditions, updating the existing scale points in the sample function according to whether the sample scale coefficients and the adjacent scale coefficients meet the counting deviation conditions or not;
the updating the existing scale points in the sample function according to whether the sample scale coefficient and the adjacent scale coefficient meet the counting deviation condition comprises the following steps:
determining a scale factor difference between a sample scale factor and the adjacent scale factor;
taking the quotient of the difference value of the scale factors and the adjacent scale factors as a counting deviation rate;
under the condition that the counting deviation rate is in an abnormal range, reserving the sample scale points and deleting the adjacent scale points;
and when the counting deviation rate is out of an abnormal range, reserving the sample scale point and the adjacent scale point.
2. The method of claim 1, wherein determining a target dose rate corresponding to the target count rate based on the target correction factor, the minimum count rate, the minimum dose rate, and the target count rate comprises:
determining a count rate difference between the target count rate and the minimum count rate;
taking the product of the target correction coefficient and the counting rate difference value as a dose rate height corresponding to the counting rate difference value, wherein the dose rate height is used for indicating an ordinate height difference value corresponding to the counting rate difference value in the piecewise function;
and taking the sum value of the dose rate height and the minimum dose rate as a target dose rate corresponding to the target counting rate.
3. The method of claim 2, wherein the target dose rate is calculated as:
F(X)＝(F(X2)-F(X1))/(X2-X1)*(X-X1)+F(X1)，
wherein F (X) is a target dose rate, X1 is a minimum count rate, F (X1) is a minimum dose rate, X2 is a maximum count rate, F (X2) is a maximum dose rate, X is a target count rate, (F (X2) -F (X1))/(X2-X1) is a target correction coefficient.
4. The method of claim 1, wherein after determining whether the sample scale point meets a preset condition, the method further comprises:
and under the condition that the sample scale points do not meet the preset condition, reserving the sample scale points and deleting the adjacent scale points.
5. The method of claim 4, wherein the adjacency count rate comprises a first adjacency count rate and a second adjacency count rate, wherein the first adjacency count rate is less than the second adjacency count rate, and wherein deleting the adjacency scale point if the sample scale point does not satisfy the preset condition comprises:
deleting the first adjacent count rate and a first sub-adjacent dose rate corresponding to the first adjacent count rate under the condition that the scale coefficient corresponding to the first adjacent count rate is larger than the sample scale coefficient;
and deleting the second adjacent count rate and a second sub-adjacent dose rate corresponding to the second adjacent count rate under the condition that the scale coefficient corresponding to the second adjacent count rate is smaller than the sample scale coefficient.
6. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored therein a computer program which, when executed by a processor, implements the method steps of any of claims 1-5.
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| US7456405B1 (en) * | 2004-03-08 | 2008-11-25 | Thermo Fisher Scientific Inc. | Portable radiation monitor methods and apparatus |
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