CN116930223A - Inspection method, device and system for flaw detector - Google Patents
Inspection method, device and system for flaw detector Download PDFInfo
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- CN116930223A CN116930223A CN202310913649.1A CN202310913649A CN116930223A CN 116930223 A CN116930223 A CN 116930223A CN 202310913649 A CN202310913649 A CN 202310913649A CN 116930223 A CN116930223 A CN 116930223A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007689 inspection Methods 0.000 title claims abstract description 23
- 230000005855 radiation Effects 0.000 claims abstract description 242
- 238000005259 measurement Methods 0.000 claims abstract description 122
- 238000005070 sampling Methods 0.000 claims description 24
- 238000012795 verification Methods 0.000 claims description 19
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 9
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- 238000003556 assay Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The application provides a method, a device and a system for calibrating a flaw detector, wherein the method for calibrating the flaw detector comprises the steps of determining a working plane, and determining at least two equidistant measuring tracks on the working plane; controlling the calibrator to move along the measurement track and acquire a radiation value of a corresponding position, and acquiring a peak radiation position on the measurement track; calculating a boundary radiation value according to the radiation peak value of the peak radiation position; according to the boundary radiation values, two boundary radiation positions on the measuring track, which are respectively positioned at the peak radiation positions along one side of the measuring track, are obtained; according to the boundary radiation positions on at least two measuring tracks, calculating two boundary lines positioned on two sides of the peak radiation position; and calculating the included angle of the two boundary lines to obtain the radiation angle of the flaw detector. The inspection method of the flaw detector in the embodiment of the application is beneficial to reducing the workload in the operation process, has low operation processing on related computing equipment, is beneficial to improving the operation speed and improves the working efficiency.
Description
Technical Field
The embodiment of the application relates to the technical field of flaw detection, in particular to a flaw detector verification method, device and system.
Background
The flaw detector is a high-energy ray generating device for nondestructive detection of industrial product parts. The device is used for judging whether the detected part has structural defects or not by transmitting high-energy rays to penetrate the detected part and obtaining the internal structural image of the part on a film or other imaging devices. Flaw detectors have been widely used in various industrial fields.
After the flaw detector is produced and used for a period of time, the radiation range of the high-energy rays emitted by the flaw detector needs to be determined so as to ensure that the technical performance of the flaw detector meets the use requirement and the safety requirement.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, apparatus and system for inspection of a flaw detector for determining the radiation range of the flaw detector.
In order to achieve the above object, the technical solution of the embodiment of the present application is as follows:
the embodiment of the application provides a flaw detector verification method, which comprises the following steps:
determining a working plane, and determining at least two equally spaced measuring tracks on the working plane;
controlling the calibrator to move along the measurement track and acquire a radiation value of a corresponding position, and acquiring a peak radiation position on the measurement track;
calculating a boundary radiation value according to the radiation peak value of the peak radiation position;
according to the boundary radiation values, two boundary radiation positions, which are respectively positioned at the peak radiation positions along one side of the measurement track, on the measurement track are obtained;
according to the boundary radiation positions on at least two measuring tracks, calculating two boundary lines positioned on two sides of the peak radiation position;
and calculating the included angle of the two boundary lines to obtain the radiation angle of the flaw detector.
In some embodiments, the controlling the calibrator to move along the measurement track specifically includes:
and controlling the calibrator to move unidirectionally along the measurement track.
In some embodiments, the distance between the two ends of the measurement track and the flaw detector is greater than the distance between the nearest end of the measurement track and the flaw detector.
In some embodiments, the controlling the calibrator to move along the measurement track and obtain the radiation value of the corresponding position, and obtaining the peak radiation position on the measurement track specifically includes:
driving the calibrator to move to an initial position at one end of the measurement track, and starting the calibrator;
driving the calibrator to move along the measurement track, and acquiring a radiation intensity value sensed by each preset sampling distance of the calibrator until the calibrator moves to a final position of the measurement track;
and comparing the radiation intensity values, screening out the radiation peak value, and obtaining the position of the radiation peak value as the peak radiation position.
In some embodiments, the ratio of the boundary radiation value to the radiation peak value is the same between the measurement tracks.
In some embodiments, the acquiring two boundary radiation positions on each of the measurement tracks, where the two boundary radiation positions are located on one side of the measurement track, specifically includes:
calculating to obtain the boundary radiation value according to the radiation peak value of the peak radiation position and the preset boundary proportion;
acquiring an alternative position at which the measured radiation intensity value on the measurement trajectory is equal to the boundary radiation value;
and determining two alternative positions which are respectively positioned at two sides of the peak radiation position and farthest from the peak radiation position along the measuring track as the boundary radiation positions.
In some embodiments, the calculating two boundary lines located at two sides of the peak radiation position according to the boundary radiation positions on at least two measurement tracks specifically includes:
fitting a reference line according to the peak radiation positions on each of the measurement tracks;
fitting the boundary radiation positions on the measurement tracks on the same side of the fitting reference line to obtain the boundary line on the side.
In some embodiments, the measurement trajectory is a straight line, and an extension of the measurement trajectory is offset from a radiation emission origin of the flaw detector.
The embodiment of the application also provides a flaw detector verification device, which comprises:
the determining module is used for determining a working plane and a measuring track on the working plane;
the control module is used for controlling the calibrator to move along the measurement track;
the acquisition module is used for acquiring a peak radiation position on the measurement track and two boundary radiation positions on the measurement track, which are respectively positioned at one side of the peak radiation position along the measurement track;
and the calculation module is used for calculating two boundary lines positioned at two sides of the peak radiation position and an included angle of the two boundary lines.
The embodiment of the application also provides a flaw detector verification system, which is used for verifying a flaw detector and comprises the following components:
the inspection apparatus of the foregoing embodiment;
the detector is used for sensing high-energy rays emitted by the flaw detector;
the driving assembly is arranged on the calibrator so as to drive the calibrator to move;
the inspection device is electrically connected with the detector and the driving assembly respectively.
According to the inspection method of the flaw detector, boundary lines of radiation angles are obtained through boundary radiation positions on different measuring tracks, the included angles between the boundary lines can intuitively reflect the numerical value of the radiation angles of the flaw detector, the method is simple in steps, low in operation processing of related computing equipment, beneficial to improvement of operation speed, convenient to obtain the radiation range of the flaw detector more quickly, and high in working efficiency.
Drawings
FIG. 1 is a flow chart of a method for calibrating a flaw detector according to an embodiment of the application;
FIG. 2 is a schematic diagram showing the relative positions of the measurement trajectory, the peak radiation position, the boundary radiation position, and the radiation angle on a working plane according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a flaw detector calibration apparatus according to an embodiment of the present application.
Description of the reference numerals
Measuring the trajectory 10; peak radiation position 11; boundary radiation position 12; a boundary line 13; a radiation angle 14; radiation cutangle 141; a reference line 15; a radiation emission origin 16; a flaw detector verification device 20; a determination module 21; a control module 22; an acquisition module 23; calculation Module 24
Detailed Description
It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.
The embodiment of the application provides a verification method of a flaw detector, which is used for verifying the flaw detector through a verifier so as to obtain the size of the radiation range emitted by the flaw detector.
Referring to fig. 1 and 2, the inspection method of the flaw detector specifically comprises the following steps.
S10: a work plane is determined and at least two equally spaced measuring tracks 10 are determined on the work plane.
The working plane refers to a two-dimensional plane of a previously defined movable range of the certifier, on which the detecting end of the certifier moves.
The detector is used for sensing high-energy rays emitted by the flaw detector.
The high-energy rays emitted by the flaw detector can trigger the detector, so that the radiation value of the high-energy rays at the position of the detector is obtained.
The particular type of assay is not limited, e.g., ionization chamber, etc.
It will be appreciated that the positions of the respective measurement tracks 10 relative to the flaw detector are arranged from the near to the far.
Equidistant intervals are arranged among the measurement tracks 10, so that on one hand, the data confusion of subsequent measurement caused by the existence of an intersection point between two adjacent measurement tracks 10 is avoided; on the other hand, the positions on two adjacent measurement tracks 10 are equidistant, so that the attenuation degree of the radiation between the positions is approximately the same, which is beneficial to simplifying the calculation of the subsequent steps.
It should be noted that, the specific algorithm and control device required for planning the motion track of the object on the two-dimensional plane are already applied in the related art, and are not described herein.
S20: the prover is controlled to move along the measurement trajectory 10 and obtain the radiation value of the corresponding position, and the peak radiation position 11 on the measurement trajectory 10 is obtained.
The prover continuously acquires coordinate data of the current position of the prover and the radiation intensity value of the current position during movement along the measurement trajectory 10. After the detector finishes moving on the measuring track 10, the radiation peak value and the position corresponding to the radiation peak value are screened out from all the acquired radiation values. Thus, the above operation is repeated on each measurement trace 10, resulting in the peak radiation position 11 on each measurement trace 10.
Radiation peak refers to the location with the greatest radiation intensity value among all the locations on the measurement trajectory 10 where measurements are made.
S30: the boundary radiation value is calculated from the radiation peak value of the peak radiation position 11.
It will be appreciated that the boundary radiation value is less than the radiation peak.
If the radiation intensity value of the other position is smaller than the boundary radiation value on the measurement track 10, the radiation intensity value of the position does not meet the flaw detection requirement or meets the flaw detector radiation leakage standard.
S40: two boundary radiation positions 12 on the measurement trajectory 10 are acquired, which are located on one side of the measurement trajectory 10 along with the peak radiation position 11, respectively, based on the boundary radiation values.
That is, one of the two boundary radiation positions 12 is located on one side of the peak radiation position 11 in the extending direction of the measurement trajectory 10, and the other is located on the other side.
S50: from the boundary radiation positions 12 on at least two measurement tracks 10, two boundary lines 13 are calculated which are located on both sides of the peak radiation position 11.
That is, one of the two boundary lines 13 is located on one side of the peak radiation position 11 in the extending direction of the measurement locus 10, and the other is located on the other side.
It will be appreciated that the boundary line 13 is a straight line.
It should be noted that, the number of the obtained boundary radiation positions 12 is at least four, and the method of determining two straight lines on the plane according to four or more positions is already applied in the related art, and will not be described herein.
S60: and calculating the included angle of the two boundary lines 13 to obtain the radiation angle 14 of the flaw detector.
It should be noted that, the related art of calculating the included angle between two straight lines on the same plane has been applied, and will not be described herein.
It will be appreciated that the radiation angle 14 obtained refers to the radiation angle 14 of the radiation emitted by the flaw detector on the working plane.
According to the inspection method of the flaw detector, the boundary lines 13 of the radiation angles 14 are obtained through the boundary radiation positions 12 on different measurement tracks 10, the numerical value of the radiation angles 14 of the flaw detector can be visually reflected by the included angles between the boundary lines 13, the steps of the method are simple, the workload in the operation process is reduced, the operation processing on related computing equipment is low, the operation speed is improved, the radiation range of the flaw detector is conveniently and rapidly obtained, and the working efficiency is improved.
It will be appreciated that, before the work plane is determined, a plurality of work planes intersecting each other in three-dimensional space are set in advance, and the radiation angles 14 of the flaw detector on each work plane are sequentially obtained, thereby obtaining the radiation range of the flaw detector in three-dimensional space.
The intersection of the work planes may be collinear.
It will be appreciated that the measurement trace 10 itself does not intersect to reduce the chance of repeated radiation intensity values affecting the detection result.
The specific type of measurement trajectory 10 is not limited.
In some embodiments, referring to FIG. 1, the measurement trajectory 10 is a straight line; in other embodiments, the measurement trajectory 10 is a circular arc with the convex side of the circular arc facing the flaw detector. Thus, the probability of influencing the detection result due to the occurrence of repeated radiation intensity values is reduced.
In some embodiments, the controlling the movement of the prover along the measurement trajectory 10 specifically includes:
the prover is controlled to move unidirectionally along the measurement trajectory 10.
That is, the calibrator does not generate reverse movement in the middle of moving from one end to the other end of the measurement track 10, so as to improve the working efficiency, and meanwhile, the problem that the obtained radiation peak value and the boundary complex radiation value generate larger deviation due to different radiation intensity values at the same position due to the influence of instrument errors, air temperature and humidity changes and the like is avoided, and the accuracy of the final detection result is improved.
In some embodiments, referring to FIG. 1, the distance between the ends of the measurement track 10 and the flaw detector is greater than the distance between the nearest end of the measurement track 10 and the flaw detector.
In this way, the peak radiation position 11 on the measurement track 10 is not located on both end points of the measurement track 10, so that the boundary radiation positions 12 located on both sides of the peak radiation position 11 are easily obtained for the subsequent steps to be performed.
It will be appreciated that the radiation emission origin 16 is part of the flaw detector.
In some embodiments, the controlling the calibrator to move along the measurement track 10 and obtain the radiation value of the corresponding position, and obtain the peak radiation position 11 on the measurement track 10 specifically includes:
s21: the prover is driven to move to an initial position at one end of the measurement track 10 and opened.
The initial position of the prover is the end point of one end of the measurement trajectory 10.
After the calibrator is controlled to move to the initial position, the calibrator is started to obtain the radiation intensity value of the initial position of the measurement track 10, so that the risk of adverse effect on the measured radiation intensity value of the initial position due to radiation received in the process of moving the calibrator to the initial position is avoided, and the detection precision is improved.
S22: the prover is driven to move along the measurement trajectory 10, and the radiation intensity value sensed by each movement of the prover by a preset sampling distance is acquired until the prover moves to the final position of the measurement trajectory 10.
That is, the radiation intensity values of the respective sampling positions on the measurement trajectory 10 at each preset sampling distance are obtained, so as to reduce the data amount, reduce the calculation amount of data storage and subsequent calculation, and increase the calculation speed.
The preset sampling distance refers to a preset interval between sampling positions, and the specific size of the preset sampling distance is determined according to the precision requirement on the size of the final radiation angle 14, the total length of the measurement track 10 and other factors.
Specific values of the preset sampling distance are not limited, for example, 5mm (millimeter), 10mm, 15mm, 20mm, and the like.
The end position is the end point of the other end of the measurement trajectory 10.
It will be appreciated that both the initial and final positions are sampling positions.
S23: and comparing the radiation intensity values, screening out a radiation peak value, and obtaining the position of the radiation peak value as a peak radiation position 11.
And comparing the radiation intensity values of all the sampling positions to obtain the maximum value which is the radiation peak value, wherein the sampling position for obtaining the radiation peak value is the peak radiation position 11.
The number of times the radiation intensity value is acquired at each sampling position is not limited, and may be one time or may be multiple times.
The specific number of times of the multiple sampling is not limited, for example, 2 times, 3 times, 5 times, etc.
Illustratively, after the prover reaches each sampling position along the measurement track 10, the prover may stop for a period of time, so as to sample the radiation intensity values multiple times during the stopped period of time, and then average the radiation intensity values multiple times to obtain a final radiation intensity value at the sampling position, so that errors caused by radiation fluctuation emitted by the flaw detector can be reduced, thereby improving sampling accuracy.
It will be appreciated that the time intervals between the plurality of radiation intensity values acquired at the same sampling location are equal, and that the specific time interval is not limited, e.g. 0.1s (second), 0.2s, 0.5s, etc.
In some embodiments, the ratio of boundary radiation values to radiation peaks is the same between the measurement tracks 10.
Taking the embodiment with two measurement tracks 10 as an example, in one measurement track 10, the ratio of the boundary radiation value to the radiation peak value is a first ratio, and in the other measurement track 10, the ratio of the boundary radiation value to the radiation peak value is a second ratio, and the first ratio is equal to the second ratio.
It will be appreciated that the high energy rays attenuate during travel due to interaction with air. The attenuation amplitude of the different high-energy rays passing through each measurement track 10 is approximately the same due to the equidistant spacing between the measurement tracks 10. Therefore, the ratio of the boundary radiation value to the radiation peak value in each measurement track 10 is unified, so that the boundary radiation positions 12 passing through the same side as the peak radiation position 11 are the same radiation ray, thereby reducing the detection error.
The specific ratio of the boundary radiation value to the radiation peak value is not limited, e.g., 50%, 60%, 70%, etc.
For example, the ratio of the boundary radiation value to the radiation peak value is 50%, that is, the magnitude of the boundary radiation value is half the radiation peak value.
It will be appreciated that in each sampling location, there may be instances where the radiation intensity values of adjacent two sampling locations are the same and are both radiation peaks. In this case, the intermediate position between the two adjacent sampling positions along the measurement trajectory 10 is the peak radiation position 11.
In some embodiments, the acquiring two boundary radiation positions 12 on each measurement track 10 along one side of the measurement track 10 at the peak radiation position 11 specifically includes:
s31: and calculating to obtain a boundary radiation value according to the radiation peak value of the peak radiation position 11 and the preset boundary proportion.
And multiplying the radiation peak value by a preset boundary proportion to obtain a value which is the boundary radiation value.
It will be appreciated that the high energy radiation is emitted in a scattered manner, so that radiation values above a certain radiation intensity value can be considered to be within the radiation range of the flaw detector, and can even meet the flaw detection requirements
For example, a predetermined boundary proportion of 50%, that is, a boundary radiation value of 50% of the radiation peak, radiation below 50% of the radiation peak may be considered to be outside the radiation range of the flaw detector.
S32: alternative positions are acquired at which the measured radiation intensity values on the measurement trajectory 10 are equal to the boundary radiation values.
It will be appreciated that there may be one or more sampling locations with boundary radiation values on one side of the peak radiation location 11, which are alternative locations, due to the shape of the measurement trajectory 10, measurement errors of the prover itself, etc.
S33: two alternative positions, which are located on both sides of the peak radiation position 11, respectively, and which are furthest from the peak radiation position 11 along the measurement trajectory 10, are determined as boundary radiation positions 12.
That is, among the plurality of sampling positions having the boundary radiation value, the sampling position farthest from the peak radiation position 11 is taken as the boundary radiation position 12 to improve the accuracy of the measurement result.
In some embodiments, referring to fig. 2, the calculating two boundary lines 13 located at two sides of the peak radiation position 11 according to the boundary radiation positions 12 on at least two measurement tracks 10 specifically includes:
s41: a reference line 15 is fitted from the peak radiation position 11 on each measurement trace 10.
S42: the boundary radiation positions 12 on the respective measurement trajectories 10 on the same side as the fitting reference line 15 are fitted to obtain boundary lines 13 on that side.
In this way, the positions of the boundary radiation positions 12 relative to the peak radiation position 11 are more intuitively represented.
The reference line 15 may represent the path of the ray having the greatest radiation value in the plane, and two radiation sub-angles 141 may be obtained by the angles between the reference line 15 and the two boundary lines 13, respectively, and the sum of the angles of the two radiation sub-angles 141 is equal to the radiation angle 14. By comparing the two radiation sub-angles 141, it can be determined whether the radiation range of the flaw detector has symmetry, and further whether the flaw detector has potential faults.
The specific method of fitting the reference line 15 is not limited, and for example, a line connecting adjacent two peak radiation positions 11 is the reference line 15.
In embodiments where the measurement trajectory 10 is straight, the extension of the measurement trajectory 10 is offset from the radiation emission origin 16 of the flaw detector to avoid the end of the measurement trajectory 10 near the radiation emission origin 16 being the peak radiation position 11.
In general, the continuous working time of the flaw detector has a time limit, if the verification process of the flaw detector is larger than the time limit, the flaw detector needs to be suspended in the middle, and after restarting the flaw detector is completed, the last unfinished step is continued until the flaw detector is finally completed.
The embodiment of the application also provides a flaw detector verification device 20, referring to fig. 3, the flaw detector verification device 20 comprises a determining module 21, a control module 22, an obtaining module 23 and a calculating module 24.
The determination module 21 is used to determine the working plane and the measurement trajectory 10 on the working plane.
The control module 22 is used to control the movement of the certification along the measurement track 10.
The acquisition module 23 is configured to acquire the peak radiation position 11 on the measurement track 10 and two boundary radiation positions 12 on the measurement track 10, which are located on one side of the measurement track 10 along the peak radiation position 11, respectively.
The calculation module 24 is configured to calculate the two borderlines 13 located on both sides of the peak radiation position 11 and the included angle between the two borderlines 13.
The embodiment of the application also provides a flaw detector verification system, which comprises a verification device, a driving assembly and a flaw detector verification device 20 in the previous embodiment, wherein the verification device is used for sensing high-energy rays emitted by a flaw detector, the verification device is arranged on the driving assembly to drive the verification device to move, and the flaw detector verification device 20 is respectively electrically connected with the verification device and the driving assembly.
The inspection apparatus 20 controls the driving means to drive the checker to move onto the measuring track 10 on the working plane and controls the turn-on timing of the checker to obtain the radiation angle 14 of the inspection machine according to the inspection method of the inspection machine in the foregoing embodiment.
Those of ordinary skill in the art will appreciate that: all or part of the steps of implementing the above-described method embodiments may be implemented by hardware associated with program instructions, and a program including the above-described method may be stored in a computer-readable storage medium, which when executed, performs the steps including the above-described method embodiments; and a storage medium storing the program includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present application may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or part of what contributes to the related art may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of the embodiments of the present application.
The various embodiments/implementations provided by the application may be combined with one another without contradiction.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of calibrating a flaw detector, comprising:
determining a working plane, and determining at least two equally spaced measuring tracks on the working plane;
controlling the calibrator to move along the measurement track and acquire a radiation value of a corresponding position, and acquiring a peak radiation position on the measurement track;
calculating a boundary radiation value according to the radiation peak value of the peak radiation position;
according to the boundary radiation values, two boundary radiation positions, which are respectively positioned at the peak radiation positions along one side of the measurement track, on the measurement track are obtained;
according to the boundary radiation positions on at least two measuring tracks, calculating two boundary lines positioned on two sides of the peak radiation position;
and calculating the included angle of the two boundary lines to obtain the radiation angle of the flaw detector.
2. The method of claim 1, wherein said controlling the tester to move along said measurement trajectory comprises:
and controlling the calibrator to move unidirectionally along the measurement track.
3. The inspection method of claim 1, wherein the distance between the two ends of the measurement trace and the inspection machine is greater than the distance between the nearest end of the measurement trace and the inspection machine.
4. The inspection method of claim 1, wherein the controlling the inspection device to move along the measurement track and obtain the radiation value of the corresponding position, and the obtaining the peak radiation position on the measurement track specifically comprises:
driving the calibrator to move to an initial position at one end of the measurement track, and starting the calibrator;
driving the calibrator to move along the measurement track, and acquiring a radiation intensity value sensed by each preset sampling distance of the calibrator until the calibrator moves to a final position of the measurement track;
and comparing the radiation intensity values, screening out the radiation peak value, and obtaining the position of the radiation peak value as the peak radiation position.
5. The method of claim 1, wherein the ratio of the boundary radiation value to the radiation peak value is the same between each of the measurement tracks.
6. The method of claim 1, wherein said obtaining two boundary radiation positions on each of said measurement tracks, said two boundary radiation positions being located on respective sides of said measurement track along said peak radiation position, comprises:
calculating to obtain the boundary radiation value according to the radiation peak value of the peak radiation position and the preset boundary proportion;
acquiring an alternative position at which the measured radiation intensity value on the measurement trajectory is equal to the boundary radiation value;
and determining two alternative positions which are respectively positioned at two sides of the peak radiation position and farthest from the peak radiation position along the measuring track as the boundary radiation positions.
7. The inspection method according to claim 1, wherein calculating two boundary lines on both sides of the peak radiation position based on the boundary radiation positions on at least two of the measurement tracks comprises:
fitting a reference line according to the peak radiation positions on each of the measurement tracks;
fitting the boundary radiation positions on the measurement tracks on the same side of the fitting reference line to obtain the boundary line on the side.
8. The inspection method of claim 1, wherein the measurement trajectory is a straight line and an extension of the measurement trajectory is offset from a radiation emission origin of the inspection machine.
9. A flaw detector verification device, comprising:
the determining module is used for determining a working plane and a measuring track on the working plane;
the control module is used for controlling the calibrator to move along the measurement track;
the acquisition module is used for acquiring a peak radiation position on the measurement track and two boundary radiation positions on the measurement track, which are respectively positioned at one side of the peak radiation position along the measurement track;
and the calculation module is used for calculating two boundary lines positioned at two sides of the peak radiation position and an included angle of the two boundary lines.
10. A flaw detector verification system for verifying a flaw detector, comprising:
the inspection machine calibration device of claim 9;
the detector is used for sensing high-energy rays emitted by the flaw detector;
the driving assembly is arranged on the calibrator so as to drive the calibrator to move;
the inspection device is electrically connected with the detector and the driving assembly respectively.
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| CN202310913649.1A CN116930223A (en) | 2023-07-24 | 2023-07-24 | Inspection method, device and system for flaw detector |
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| CN202310913649.1A CN116930223A (en) | 2023-07-24 | 2023-07-24 | Inspection method, device and system for flaw detector |
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