CN107024491A - A kind of X-ray nondestructive detection system and its detection method - Google Patents

Abstract

The invention discloses an X-ray nondestructive testing system and a testing method thereof, comprising: a testing terminal, an X-ray machine, an X-ray locomotive, a digital imaging board and an imaging board car, and the testing terminal includes a central controller, a position adjustment device, and a display device and the communication device; the position adjustment device is connected with the central controller and the communication device in turn; the central controller is also connected with the display device; the detection terminal is respectively connected with the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging device through the communication device Board car communication connection; the central controller includes an image acquisition module and an image analysis module, the image acquisition module is used to obtain the X-ray image of the equipment under test; the image analysis module is used to analyze the X-ray image, calculate and determine the defects or defects of the equipment under test Fault. This system does not require staff to analyze and calculate, and automatically analyzes the internal defects or faults of the equipment under test, with high accuracy.

Description

An X-ray non-destructive testing system and its testing method

technical field

The invention relates to the technical field of X-ray non-destructive testing of power equipment, in particular to an X-ray non-destructive testing system and a testing method thereof.

Background technique

In the power industry, X-ray nondestructive testing is a detection method that uses the strong penetrating ability of X-rays to detect internal defects or faults in power equipment. According to the changes in the intensity of X-rays penetrating the equipment under test, it can detect internal defects or failures such as air gaps, foreign matter, slag inclusions, cracks, and improper assembly in the equipment. Due to the fast and accurate X-ray non-destructive testing, it has been more and more widely used in the power industry.

At present, the X-ray non-destructive testing system includes an X-ray machine, a digital imaging board, a computer and an integrated control platform. It can move with the X-ray locomotive; the digital imaging panel is fixedly connected with the second elevator arranged on the imaging cart, and can move with the imaging cart while being lifted up and down with the second elevator. During X-ray non-destructive testing, the integrated control platform controls the X-ray machine and the digital imaging board to move to both sides of the device under test respectively, and controls the X-ray machine to emit X-rays to irradiate the device under test; X-rays penetrate the device under test, A two-dimensional projected X-ray image is directly formed on the digital imaging board, and finally the staff opens the image acquisition software in the computer to obtain the projected X-ray image. According to the obtained X-ray images, the staff can determine the internal defects or faults of the equipment under test.

However, in the above-mentioned system, the acquired X-ray images need to be measured, calculated and analyzed by the staff to determine whether there are internal defects or faults such as air gaps, foreign matter and slag inclusions, cracks, and improper assembly of the equipment to be tested; however, For some electrical equipment, when judging defects or faults, workers usually need to collect X-ray images of multiple suspicious parts. Through the analysis of multiple X-ray images by staff, internal defects or faults of the equipment under test can be obtained, and the accuracy is low.

Contents of the invention

The invention provides an X-ray non-destructive testing system and a testing method thereof to solve the problem in the prior art that workers are required to analyze X-ray images to judge internal defects or failures of equipment to be tested with low accuracy.

In the first aspect, the present invention provides an X-ray non-destructive testing system, the system includes: a testing terminal, an X-ray machine, an X-ray locomotive, a digital imaging board and an imaging board car, wherein,

The detection terminal includes a central controller, a position adjustment device, a display device and a communication device;

The position adjustment device is sequentially connected to the central controller and the communication device, and the position adjustment device is used to adjust the positions of the X-ray machine and the digital imaging panel, and send an adjustment signal to the central controller ; The central controller is also connected in communication with the display device;

The detection terminal is respectively connected to the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car through the communication device, and the communication device is used to communicate with the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car. The imaging board car sends the control information of the central controller, and receives the information fed back by the X-ray machine, X-ray locomotive, digital imaging board and imaging board car;

The central controller includes an image acquisition module and an image analysis module connected in sequence, and the image acquisition module is used to acquire the two-dimensional projection acquired by the digital imaging board and perform image acquisition to obtain an X-ray image of the device under test; The image analysis module is used to analyze the X-ray image collected by the image collection module, and calculate and determine the defect or failure of the device under test.

Preferably, it also includes a first laser distance measuring device and a second laser distance measuring device, wherein,

The first laser distance measuring device is arranged on the X-ray machine for measuring the distance between the X-ray machine and the equipment under test; the second laser distance measuring device is arranged on the digital imaging board, It is used to measure the distance between the digital imaging board and the equipment under test; the first laser distance measuring device and the second laser distance measuring device are respectively connected with the communication device.

Preferably, the image analysis module includes:

An image preprocessing sub-module, configured to denoise the obtained X-ray image, grayscale the denoised X-ray image, and obtain grayscale values of all pixels of the X-ray image;

The image area division sub-module is used to generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the X-ray image according to the correlation Divided into several areas, wherein the correlation of the gray level co-occurrence matrix of all pixels in each said area is the same;

The image outline extraction submodule is used to extract the image outline of each region;

The size calculation sub-module is used to calculate the size of the device under test corresponding to each area according to the image outline of each area;

The defect or fault determination sub-module is used to compare the size of the device under test corresponding to each area with the actual size of the corresponding area in the preset X-ray image feature database, and determine the defect or fault.

Preferably, the display device includes:

The detection status display sub-module is used to display the X-ray non-destructive testing status, and the X-ray non-destructive testing status includes X-ray image acquisition, completion of X-ray image acquisition or completion of X-ray image analysis.

Preferably, the detection terminal further includes a key input module, the key input module includes a preheating key, a one-key acquisition key and a one-key stop key, and the preheating key, one-key acquisition key and one-key stop key are respectively connected to The central controller is electrically connected.

Preferably, the detection terminal further includes a voice prompt module, the voice prompt module is electrically connected to the central controller, and is used to prompt the status of the X-ray non-destructive testing.

Preferably, the detection terminal further includes an X-ray radiation amount setting module, which is electrically connected to the central controller and used to set the X-ray radiation amount emitted by the X-ray machine.

Preferably, the detection terminal includes a mobile phone or a Pad.

In a second aspect, the present invention provides an X-ray nondestructive testing method, the method comprising:

The detection terminal controls the X-ray machine and the digital imaging board to move to both sides of the device under test, and the X-ray machine, the digital imaging board, and the device under test are on the same straight line;

controlling the X-ray machine to emit X-rays, and the digital imaging board sends the obtained two-dimensional projection to the detection terminal;

The detection terminal performs X-ray image acquisition;

The detection terminal performs X-ray image analysis to determine the defect or fault of the device under test.

Preferably, the detection terminal performs X-ray image analysis to determine the defect or failure of the device under test, including:

Denoising the obtained X-ray image, graying the denoised X-ray image to obtain gray values of all pixels of the X-ray image;

Generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the X-ray image into several regions according to the correlation, wherein each The correlation of the gray level co-occurrence matrix of all pixels in the region is the same;

Extract the image contour of each region;

According to the image outline of each area, calculate the size of the device under test corresponding to each area;

The size of the device under test corresponding to each area is compared with the actual size of the corresponding area in the preset X-ray image feature database to determine the defect or failure.

The technical solution provided by the invention may include the following beneficial effects:

An embodiment of the present invention provides an X-ray nondestructive testing system and testing method, including: a testing terminal, an X-ray machine, an X-ray locomotive, a digital imaging board, and an imaging board cart, wherein the testing terminal includes a central controller, a position adjustment device, a display device and a communication device; the position adjustment device is sequentially connected with the central controller and the communication device, and the position adjustment device is used to adjust the position of the X-ray machine and the digital imaging board, and will adjust The signal is sent to the central controller; the central controller is also communicatively connected with the display device; the detection terminal communicates with the X-ray machine, X-ray locomotive, digital imaging board and imaging board car respectively through the communication device connection, the communication device is used to send the control information of the central controller to the X-ray machine, X-ray locomotive, digital imaging board and imaging board car, and receive the X-ray machine, X-ray locomotive, digital imaging board and the information fed back by the imaging board; the central controller includes an image acquisition module and an image analysis module connected in sequence, and the image acquisition module is used to obtain the two-dimensional projection obtained by the digital imaging board and perform image acquisition to obtain The X-ray image of the device under test; the image analysis module is used to analyze the X-ray image collected by the image acquisition module, and calculate and determine the defect or failure of the device under test. The X-ray non-destructive testing system provided by the embodiment of the present invention can adjust the positions of the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car through the position adjustment device arranged on the detection terminal, so that the X-ray machine, the equipment to be tested In a straight line with the imaging board; the image acquisition module set on the detection terminal can collect the X-ray images of the equipment under test, and the image analysis module can analyze and calculate the X-ray images collected by the image acquisition module, so as to determine the equipment under test defects and malfunctions. This system does not require staff to analyze and calculate, and automatically analyzes the internal defects or faults of the equipment under test, with high accuracy.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, on the premise of not paying creative labor, Additional drawings can also be derived from these drawings.

Fig. 1 is a schematic structural diagram of an X-ray nondestructive testing system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a detection terminal provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an image analysis module provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of an image analysis method provided by an embodiment of the present invention;

The symbols in Figure 1-Figure 4 indicate 1-detection terminal, 11-central controller, 111-image acquisition module, 112-image analysis module, 12-position adjustment device, 13-display device, 14-communication device, 2-X X-ray machine, 3-X-ray locomotive, 31-first elevator, 4-digital imaging board, 5-imaging board car, 51-second elevator, 6-first laser distance measuring device, 7-second laser distance measuring device , 8-device under test.

detailed description

An embodiment of the present invention provides an X-ray nondestructive testing system, as shown in FIG. 1 , which includes: a testing terminal 1 , an X-ray machine 2 , an X-ray locomotive 3 , a digital imaging panel 4 and an imaging panel cart 5 .

In the specific implementation process, the X-ray locomotive 3 is provided with a first controller, a first communication module and a first drive module, and the X-ray locomotive 3 is provided with a first elevator 31, and the X-ray machine 2 is arranged on the first elevator 31. Up, can move up and down with the first elevator 31. The first communication module can communicate externally, receive control information externally, or feed back information externally; the first controller is used to issue control instructions to the first drive module and the first elevator 31 according to the control information received by the first communication module; A driving module is used to receive the control command issued by the first controller, and adjust the position of the X-ray locomotive according to the control command, and the first elevator 31 is used to receive the command issued by the first controller, and adjust the first elevator 31 according to the control command height, thereby adjusting the height of the X-ray machine 2.

The inside of the imaging cart 5 is provided with a second controller, a second communication module and a second drive module, the imaging cart 5 is provided with a second elevator 51, and the digital imaging panel 4 is arranged on the second elevator 51, and can be moved along with the second elevator. The elevator 51 moves up and down. The second communication module can communicate externally, receive control information externally, or feed back information externally; the second controller is used to issue control instructions to the second drive module and the second elevator 51 according to the control information received by the second communication module; The second driving module is used to receive the control instruction issued by the second controller, and adjust the position of the imaging cart according to the control instruction, and the second elevator 51 is used to receive the instruction issued by the second controller, and adjust the second elevator 51 according to the control instruction height, thereby adjusting the height of the digital imaging board 4.

In a specific implementation process, both the first driving module and the second driving module include a driving motor.

The X-ray machine 2 is internally provided with a third controller, a third communication module and an X-ray emitting module. The third communication module can communicate externally, receive control information externally or feed back information externally. The third controller is configured to issue control instructions to the X-ray emission module according to the control information received by the third communication module, and the control instructions include turning on/off X-ray emission, adjusting the amount of X-ray radiation, and the like. The X-ray emission module is used to turn on/off the X-ray emission, adjust the X-ray radiation amount, etc. according to the control instruction of the third controller.

A fourth controller, a fourth communication module and a projection module are arranged inside the digital imaging board 4 . The fourth communication module can communicate externally, receive control information externally or feed back information externally. The fourth controller is configured to issue a control instruction to the projection module according to the control information received by the fourth communication module, and the control instruction includes turning on/off the two-dimensional projection. The projection module is used to turn on/off the two-dimensional projection function according to the control instruction of the fourth controller.

In a specific implementation process, the first communication module, the second communication module, the third communication module and the fourth communication module all include a WIFI module or a Bluetooth module.

The detection terminal 1 includes a central controller 11 , a position adjustment device 12 , a display device 13 and a communication device 14 . As shown in FIG. 2 , the position adjustment device 12 communicates with the central controller 11 and the communication device 14 in sequence.

The position adjustment device 12 is used to adjust the position of the X-ray machine and the digital imaging panel, and sends the adjustment signal to the central controller 11, and the central controller 11 receives the adjustment signal, and sends the X-ray machine 2, X The ray locomotive 3, the digital imaging board 4 and the imaging board car 5 send control information.

Before performing X-ray non-destructive testing on the device 8 to be tested, the positions of the X-ray machine and the digital imaging panel are adjusted by operating the position adjusting device 12 . In a specific implementation process, by operating the position adjustment device 12 , the X-ray locomotive 3 and the first elevator 31 are adjusted, thereby adjusting the positions of the X-ray machine 2 and the digital imaging panel 4 . The X-ray machine 2 and the digital imaging board 4 are respectively arranged on both sides of the device under test 8, and the X-ray machine 2, the device under test 8 and the digital imaging board 4 are in a straight line to ensure that the X-rays emitted by the X-ray machine When irradiated on the device under test, the digital imaging board can acquire X-rays that penetrate the device under test and can form a two-dimensional projection.

In a specific implementation process, the position adjustment device 12 includes a touch adjustment key or an adjustment key or the like.

The detection terminal 1 communicates with the X-ray machine 2 , the X-ray locomotive 3 , the digital imaging board 4 and the imaging board cart 5 through the communication device 14 . In the embodiment of the present invention, the communication device 14 is respectively connected to the first communication module, the second communication module, the third communication module and the fourth communication module, so as to realize the connection between the detection terminal 1 and the X-ray machine 2, the X-ray locomotive 3, The communication connection of the digital imaging board 4 and the imaging board car 5 . The communication device 14 is used to send the control information of the central controller 11 to the X-ray machine 2, the X-ray locomotive 3, the digital imaging board 4 and the imaging board car 5, and receive the X-ray machine 2, X-ray Information fed back by locomotive 3, digital imaging board 4 and imaging board car 5. In a specific implementation process, the communication device 14 includes a WIFI module or a Bluetooth module matched with the first communication module, the second communication module, the third communication module and the fourth communication module.

The digital imaging board 4 can send the obtained two-dimensional projection to the central controller 11 through the fourth communication module. The central controller 11 includes an image acquisition module 111 and an image analysis module 112 connected in sequence, and the image acquisition module 111 is used to obtain the two-dimensional projection obtained by the digital imaging board and perform image acquisition to obtain the X of the device under test 8. radiographic image. In a specific implementation process, the X-ray images collected by the image acquisition module are X-ray digital images.

The image analysis module 112 is used for analyzing the X-ray images collected by the image collection module 111 to calculate and determine the defects or faults of the device under test 8 .

In a possible embodiment, as shown in FIG. 3 , the image analysis module 112 includes: an image preprocessing submodule 1121, an image area division submodule 1122, an image contour extraction submodule 1123, a size calculation submodule 1124 and Defect or fault determination sub-module 1125 .

The image preprocessing sub-module 1121 is configured to denoise the obtained X-ray image, grayscale the denoised X-ray image, and obtain grayscale values of all pixels of the X-ray image .

The image area division sub-module 1122 is used to generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the The X-ray image is divided into several regions, wherein the correlation of the gray level co-occurrence matrix of all pixels in each region is the same.

The image contour extraction sub-module 1123 is used to extract the image contour of each region.

The size calculation sub-module 1124 is configured to calculate the size of the device under test corresponding to each area according to the image profile of each area.

The defect or fault determination sub-module 1125 is used to compare the size of the device under test corresponding to each area with the actual size of the corresponding area in the preset X-ray image feature database, and determine the defect or fault.

The central controller 11 is also communicatively connected with the display device 13 . The display device 13 is used to display the X-ray image of the device under test collected by the image collection module to the user.

In a possible embodiment, the display device 13 includes a detection state display submodule.

The detection status display sub-module is used to display the X-ray non-destructive testing status, and the X-ray non-destructive testing status includes X-ray image acquisition, completion of X-ray image acquisition or completion of X-ray image analysis.

In the specific implementation process, the detection status display sub-module includes indicator lights of red, yellow, and green colors. The red indicator light indicates that X-ray image acquisition is in progress, the yellow indicator light indicates that X-ray image acquisition is completed, and the green indicator light indicates that X-ray image acquisition is completed. X-ray analysis complete. Users can determine the status of X-ray non-destructive testing according to three indicator lights.

In a possible embodiment, the detection terminal 1 further includes a voice prompt module, the voice prompt module is electrically connected to the central controller 11, and is used to prompt the status of the X-ray nondestructive testing. For example, the detection terminal may prompt through the voice prompt module that the current X-ray non-destructive testing status is X-ray image acquisition in progress, X-ray image acquisition completed, or X-ray image analysis completed.

In order to facilitate users to operate the X-ray nondestructive testing system quickly and obtain a better experience, the detection terminal 1 also includes a key input module, and the key input module includes a preheating key, a one-key acquisition key and a one-key stop key, The preheating key, one-key acquisition key and one-key stop key are respectively electrically connected to the central controller 11 . Press the preheating button to preheat the X-ray non-destructive testing system; press the one-key collection button, the X-ray non-destructive testing system can automatically collect the X-ray images of the equipment under test; press the opinion stop button, the X-ray non-destructive testing system can Automatically stops an ongoing action.

In a possible embodiment, the system further includes a first laser distance measuring device 6 and a second laser distance measuring device 7, wherein the first laser distance measuring device 6 is arranged on the X-ray machine 2 , used to measure the distance between the X-ray machine 2 and the equipment to be tested 8; Measure the distance between devices 8. The first laser distance measuring device 6 and the second laser distance measuring device 7 are respectively connected to the communication device 14 by communication.

In the specific implementation process, the first laser distance measuring device 6 and the second laser distance measuring device 7 are respectively provided with a fifth communication module and a sixth communication module, and the fifth communication module and the sixth communication module are respectively connected with the communication device 14 communication connection. When performing X-ray non-destructive testing on the device under test 8, the fifth communication module is used to send the distance between the X-ray machine 2 measured by the first laser distance measuring device 6 and the device under test 8 to the detection terminal 1; the sixth communication The module is used to send the distance between the digital imaging board 4 and the device under test 8 to the detection terminal 1 .

Further, in order to facilitate users to view the information of the X-ray non-destructive testing site, the system further includes a site camera, which is set on the X-ray machine, and is connected to the communication device 14 by communication. The on-site camera is used to take pictures of the X-ray non-destructive testing site and send them to the testing terminal 1 through the communication device 14 . The user can view the picture of the X-ray non-destructive testing site through the display device.

Further, in order to facilitate users to set the X-ray radiation dose, the detection terminal 1 further includes an X-ray radiation dose setting module. The X-ray radiation dose setting module is electrically connected to the central controller 11 and is used for setting the radiation dose of X-rays emitted by the X-ray machine. During the specific implementation process, the radiation dose of X-rays emitted by the X-ray machine can be displayed through the display device, and the user can check the current radiation dose of X-rays in a timely manner.

In the embodiment of the present invention, the detection terminal 1 includes a mobile phone or a Pad.

An embodiment of the present invention provides an X-ray nondestructive testing system, including: a testing terminal, an X-ray machine, an X-ray locomotive, a digital imaging board, and an imaging board car, wherein the testing terminal includes a central controller, a position adjustment device, a display device and communication device; the position adjustment device is sequentially connected with the central controller and the communication device, and the position adjustment device is used to adjust the position of the X-ray machine and the digital imaging board, and send the adjustment signal to The central controller; the central controller is also communicatively connected with the display device; the detection terminal is respectively connected with the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car through the communication device. The communication device is used to send the control information of the central controller to the X-ray machine, X-ray locomotive, digital imaging board and imaging board car, and receive the X-ray machine, X-ray locomotive, digital imaging board and imaging board The information fed back by the car; the central controller includes an image acquisition module and an image analysis module connected in sequence, and the image acquisition module is used to obtain the two-dimensional projection obtained by the digital imaging board and perform image acquisition to obtain the device under test The X-ray image; the image analysis module is used to analyze the X-ray image collected by the image acquisition module, and calculate and determine the defect or failure of the device under test. The X-ray non-destructive testing system provided by the embodiment of the present invention can adjust the positions of the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car through the position adjustment device arranged on the detection terminal, so that the X-ray machine, the equipment to be tested In a straight line with the imaging board; the image acquisition module set on the detection terminal can collect the X-ray images of the equipment under test, and the image analysis module can analyze and calculate the X-ray images collected by the image acquisition module, so as to determine the equipment under test defects and malfunctions. This system does not require staff to analyze and calculate, and automatically analyzes the internal defects or faults of the equipment under test, with high accuracy.

Based on the same technical concept, the embodiment of the present invention also provides an X-ray non-destructive testing method, using the X-ray non-destructive testing system provided in the above embodiment, the method includes:

Step S100: The detection terminal controls the X-ray machine and the digital imaging board to move to both sides of the device under test, and the X-ray machine, the digital imaging board, and the device under test are on the same straight line.

Step S200: Control the X-ray machine to emit X-rays, and the digital imaging panel sends the obtained two-dimensional projection to the detection terminal.

Step S300: The detection terminal collects X-ray images.

In a specific implementation process, X-ray image acquisition is performed on the two-dimensional projection sent by the digital imaging board to obtain an X-ray image of the device under test.

Step S400: The detection terminal analyzes the X-ray image to determine the defect or failure of the device under test.

In a possible implementation manner, the specific implementation manner of step S400, referring to FIG. 4 , includes:

Step S410: denoising the obtained X-ray image, grayscale the denoised X-ray image, and obtain grayscale values of all pixels of the X-ray image.

In a specific implementation process, the X-ray image of the device under test obtained in step S300 is subjected to denoising processing. There are various methods of denoising processing, such as median filtering and linear filtering. The denoising processed X-ray image is grayscaled to obtain the grayscale values of all pixels in the above image.

Step S420: Generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the X-ray image into several regions according to the correlation, Wherein, the correlation of the gray level co-occurrence matrix of all pixels in each region is the same.

In a specific implementation process, the intensity values of all pixels in the X-ray image are generated into a gray level co-occurrence matrix in four directions, and the four directions include: 0°, 45°, 90° and 135°. In order to describe the texture of the image more intuitively, the correlation of each pixel is derived according to the gray level co-occurrence matrix. Correlation can measure the similarity of elements in the spatial gray level co-occurrence matrix in rows or columns. The X-ray image is divided into several regions according to the correlation, wherein all pixels in each region have the same correlation.

Step S430: Extract the image contour of each region.

In the specific implementation process, there are many methods for extracting the image contour of the region, such as the first-order differential method and the second-order differential method.

Step S440: Calculate the size of the DUT corresponding to each area according to the image profile of each area.

In the specific implementation process, before calculating the size of each area, it is necessary to measure the distance between the X-ray machine and the device under test, the distance between the digital imaging board and the device under test, and calculate the size of each area, according to The following formula:

Calculate the size of the device under test corresponding to each area, where H0 is the size of each area of the X-ray image, H is the calculated size of the device under test corresponding to each area, and _{L0 is} the X-ray machine and the size of the device to be tested The distance between devices, L is the distance between the digital imaging board and the device under test, and the value of _H0 can be measured by the image analysis module.

In a possible implementation, the distance between the X-ray machine and the device to be tested, and the distance between the digital imaging board and the device to be tested can be measured by the first laser ranging on the X-ray machine and the imaging board. The first device and the second laser distance measuring device perform measurement, and while the X-ray image acquisition is performed, the first laser distance measuring device and the second laser distance measuring device send the measurement results to the central controller. When performing image analysis, the size of the X-ray image is measured, and the two data are obtained at the same time, and the size of the device under test corresponding to each area of the X-ray image is calculated according to the above formula.

Step S450: Compare the size of the DUT corresponding to each area with the actual size of the corresponding area in the preset X-ray image feature database, and determine the defect or failure.

Wherein, the preset X-ray image feature data map includes the normal X-ray image of the device under test and the actual size of the region corresponding to the normal X-ray image.

In a possible implementation manner, the specific implementation manner of step S450 includes:

The size of the device under test corresponding to each area is compared with the actual size of the corresponding area in the preset X-ray image feature database one by one, and the difference percentage of each area is calculated.

Determine whether the difference percentage of each area is greater than 5%.

If the percent difference is greater than or equal to 5%, the area is a defect or failure.

If the difference percentage is less than 5%, the area is a normal area.

In a possible implementation manner, in order to judge defects or faults more accurately, X-ray images may be taken repeatedly for regions judged to be defects or faults, and analyzed and judged according to the above steps.

For the same and similar parts among the various embodiments in this specification, refer to each other. In particular, for the detection system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the related parts, please refer to the description in the method embodiment.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosure herein. This application is intended to cover any modification, use or adaptation of the present invention, these modifications, uses or adaptations follow the general principles of the present invention and include common knowledge or conventional technical means in the technical field not disclosed in the present invention . The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

The embodiments of the present invention described above are not intended to limit the protection scope of the present invention.

Claims (10)

1. An X-ray nondestructive testing system, characterized in that the system includes: a detection terminal, an X-ray machine, an X-ray locomotive, a digital imaging board and an imaging board car, wherein, The detection terminal includes a central controller, a position adjustment device, a display device and a communication device; The position adjustment device is sequentially connected to the central controller and the communication device, and the position adjustment device is used to adjust the positions of the X-ray machine and the digital imaging panel, and send an adjustment signal to the central controller ; The central controller is also connected in communication with the display device; The detection terminal is respectively connected to the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car through the communication device, and the communication device is used to communicate with the X-ray machine, the X-ray locomotive, the digital imaging board and the imaging board car. The imaging board car sends the control information of the central controller, and receives the information fed back by the X-ray machine, X-ray locomotive, digital imaging board and imaging board car; The central controller includes an image acquisition module and an image analysis module connected in sequence, and the image acquisition module is used to acquire the two-dimensional projection acquired by the digital imaging board and perform image acquisition to obtain an X-ray image of the device under test; The image analysis module is used to analyze the X-ray image collected by the image collection module, and calculate and determine the defect or failure of the device under test. 2. The system according to claim 1, further comprising a first laser distance measuring device and a second laser distance measuring device, wherein, The first laser distance measuring device is arranged on the X-ray machine for measuring the distance between the X-ray machine and the equipment under test; the second laser distance measuring device is arranged on the digital imaging board, It is used to measure the distance between the digital imaging board and the equipment under test; the first laser distance measuring device and the second laser distance measuring device are respectively connected with the communication device. 3. system as claimed in claim 1, is characterized in that, described image analysis module comprises: An image preprocessing sub-module, configured to denoise the obtained X-ray image, grayscale the denoised X-ray image, and obtain grayscale values of all pixels of the X-ray image; The image area division sub-module is used to generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the X-ray image according to the correlation Divided into several areas, wherein the correlation of the gray level co-occurrence matrix of all pixels in each said area is the same; The image outline extraction submodule is used to extract the image outline of each region; The size calculation sub-module is used to calculate the size of the device under test corresponding to each area according to the image outline of each area; The defect or fault determination sub-module is used to compare the size of the device under test corresponding to each area with the actual size of the corresponding area in the preset X-ray image feature database, and determine the defect or fault. 4. The system according to claim 1, wherein the display device comprises: The detection status display sub-module is used to display the X-ray non-destructive testing status, and the X-ray non-destructive testing status includes X-ray image acquisition, completion of X-ray image acquisition or completion of X-ray image analysis. 5. The system according to claim 1, wherein the detection terminal also includes a key input module, and the key input module includes a preheating key, a one-key acquisition key and a one-key stop key, and the preheating key , a one-key acquisition button and a one-key stop button are respectively electrically connected to the central controller. 6. The system according to claim 1, wherein the detection terminal further comprises a voice prompt module, the voice prompt module is electrically connected to the central controller, and is used to prompt the state of the X-ray non-destructive testing. 7. The system according to claim 1, wherein the detection terminal also includes an X-ray radiation setting module, and the X-ray radiation setting module is electrically connected to the central controller for setting Determine the amount of X-ray radiation emitted by the X-ray machine. 8. The system according to claim 1, wherein the detection terminal comprises a mobile phone or a Pad. 9. An X-ray nondestructive testing method, characterized in that the method comprises: The detection terminal controls the X-ray machine and the digital imaging board to move to both sides of the device under test, and the X-ray machine, the digital imaging board, and the device under test are on the same straight line; controlling the X-ray machine to emit X-rays, and the digital imaging board sends the obtained two-dimensional projection to the detection terminal; The detection terminal performs X-ray image acquisition; The detection terminal performs X-ray image analysis to determine the defect or failure of the device under test. 10. The method according to claim 9, wherein the detection terminal performs X-ray image analysis to determine the defect or failure of the device under test, including: Denoising the obtained X-ray image, graying the denoised X-ray image to obtain gray values of all pixels of the X-ray image; Generate a gray-scale co-occurrence matrix in four directions from the gray values of all pixels in the X-ray image, deduce the correlation of each pixel, and divide the X-ray image into several regions according to the correlation, wherein each The correlation of the gray level co-occurrence matrix of all pixels in the region is the same; Extract the image contour of each region; According to the image outline of each area, calculate the size of the device under test corresponding to each area; The size of the device under test corresponding to each area is compared with the actual size of the corresponding area in the preset X-ray image feature database to determine the defect or failure.