A multifunctional detection method and device for the imaging quality of an X-ray tube component

Abstract

The present invention discloses a multifunctional detection method and device for the imaging quality of an X-ray tube assembly, including: determining that there are impurity points in the outgoing line window of the X-ray tube assembly, determining that the energy distribution of X-rays in the window area is seriously uneven, and determining whether the window of X-ray imaging is distorted. The present invention has the characteristics of convenient detection and wide application range.

Description

Technical Field

[0001] The present invention relates to a detection means for an X-ray tube assembly, in particular to a multi-functional detection method and device for the imaging quality of an X-ray tube assembly. Background Art

[0002] X-ray detection technology is widely used in various industries. As one of the methods for generating X-rays, the quality of the X-ray tube assembly determines the imaging quality of X-rays. At present, the main problems encountered by X-ray tube assemblies in the field of X-ray imaging are as follows: there are impurity points in the outgoing line window of the X-ray tube assembly, resulting in artifacts in the image during imaging, which may cause misjudgment in algorithm recognition during customer use; the energy distribution of X-rays in the window area is seriously uneven, making it difficult to calculate during algorithm operation or resulting in low recognition rate; the window sizes of X-ray imaging vary greatly, causing differences in image magnification or distortion and other adverse phenomena, ultimately leading to inaccurate size calculation or positioning.

[0003] However, currently, when it comes to the quality of X-ray tube assemblies, it mainly focuses on aspects such as withstand voltage, focal point, and power, and the imaging quality is not taken as the main parameter. In actual production activities, complaints caused by poor imaging quality are often encountered. Therefore, it is necessary to develop a method and device for multi-functional detection of the imaging quality of X-ray tube assemblies. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and device for the quality detection of X-ray tube assemblies. The present invention has the characteristics of convenient detection and wide application range.

[0005] The technical solution of the present invention: A multi-functional detection method for the imaging quality of an X-ray tube assembly includes the following steps:

[0006] S1 Analyze and determine whether there are impurity points in the outgoing line window of the X-ray tube assembly:

[0007] S11, Place the X-ray tube assembly to be tested into the detection device, ensure that the outgoing line window of the X-ray tube assembly is placed horizontally, and establish a connection between the X-ray tube and the high-voltage power supply through high- and low-voltage cables;

[0008] S12, Open the high-voltage power supply control program and the image recognition device (image receiver) control program with the display control center; Set the high-voltage power supply parameters, including the kilovolt value of the tube voltage and the milliampere value of the tube current, etc.; Set the parameters of the image recognition device (image receiver), including the image acquisition time, etc.; Set the parameters of each drive motor to meet the centering requirements and height requirements;

[0009] S13, Start the drive motor to load to the set parameters; Start the high-voltage power supply control program to make the high-voltage power supply load the preset parameters; Start the image recognition device (image receiver) control program to start image acquisition;

[0010] S14. After the image is taken, save the image and turn off the high-voltage power supply;

[0011] S15. Analyze the image information with gray value analysis software, that is, capture impurity points and give an alarm prompt according to the set near-neighbor gray value difference.

[0012] S2. Analyze and determine that the energy distribution of X-rays in the window area is seriously uneven:

[0013] S21. Repeat the steps of S12 to set different parameters, that is, adjust the height of the image recognition device (image receiver) and the position of the X-ray tube assembly to be measured to make the image position meet the test requirements; adjust the parameters of the high-voltage power supply and the image recognition device, and restart the steps of S13 - S14 to make the clarity, gray level, contrast, etc. of the original image meet the test requirements;

[0014] S22. Analyze the image information with gray value analysis software, that is, read the maximum and minimum values of the gray level respectively for the set area and linearity, calculate the central value and the deviation; compare with the preset deviation value and give an alarm prompt if the deviation is too large.

[0015] S3. Analyze and determine whether the window of the X-ray image is distorted, and analyze and determine whether there is a large difference in the size of the window of the X-ray image, resulting in a difference in the image magnification:

[0016] S31. Repeat the steps of S12 to set different parameters, that is, adjust the height of the image recognition device (image receiver) and the position of the X-ray tube assembly to be measured to make the image position meet the test requirements; adjust the parameters of the high-voltage power supply and the image recognition device, and restart the steps of S13 - S14 to make the clarity, gray level, contrast, etc. of the original image meet the test requirements;

[0017] S32. Analyze the image information with gray value analysis software. By reading multiple groups of distances passing through the center point of the image, calculate the deviation through the maximum and minimum values, compare with the preset deviation value, and give an alarm prompt if the deviation is too large, and determine that distortion occurs (for example: oval, etc.).

[0018] S33. For the image without distortion, obtain the data of the actual diameter size (average value of the distances passing through the center point) of the window image, and compare with the set diameter size for difference comparison; at the same time, an alarm can be set for the data with large differences.

[0019] A multifunctional detection device for the imaging quality of an X-ray tube assembly for implementing the foregoing method, comprising a chassis. A partition board is provided inside the chassis, and the partition board divides the chassis into a storage box on the upper side and an analysis box on the lower side. A flat panel detector tooling is provided in the analysis box, and a flat panel detector is installed on the flat panel detector tooling, and the flat panel detector is kept horizontally placed. An X-ray tube assembly fixing tooling is provided in the storage box, and a tooling window is provided on the X-ray tube assembly fixing tooling. The tooling window coincides with the central axis of the wire outlet window of the X-ray tube assembly, and the center of the wire outlet window of the X-ray tube assembly is perpendicular to the flat panel detector. A display control center is provided outside the chassis.

[0020] In the foregoing multifunctional detection device for the imaging quality of an X-ray tube assembly, a first guide rail slide is horizontally provided on the upper side of the storage box. A second guide rail slide is connected to the lower side of the first guide rail slide, and the X-ray tube assembly fixing tooling is connected to the lower side of the second guide rail slide. The sliding directions of the first guide rail slide and the second guide rail slide are perpendicular. A first servo motor is fixedly installed on one side of the first guide rail slide to control the first guide rail slide to move along the Y axis. A second servo motor is fixedly installed at the upper end of the second guide rail slide to control the second guide rail slide to move along the X axis.

[0021] In the foregoing multifunctional detection device for the imaging quality of an X-ray tube assembly, a third guide rail slide is longitudinally provided in the analysis box, and the flat panel detector tooling is connected to the third guide rail slide. A third servo motor is fixedly installed at the upper end of the third guide rail slide to control the third guide rail slide to move along the Z axis.

[0022] In the foregoing multifunctional detection device for the imaging quality of an X-ray tube assembly, a high-voltage power supply is provided in the storage box. The high-voltage power supply is connected to both the display control center and the flat panel detector, and an X-ray tube assembly connection port is provided outside the high-voltage power supply.

[0023] In the foregoing multifunctional detection device for the imaging quality of an X-ray tube assembly, a shielding X-ray outer shell is provided outside the chassis. A storage box door and an analysis box door are provided on the shielding X-ray outer shell, and the analysis box door is normally closed, which is safe and reliable.

[0024] In the foregoing multifunctional detection device for the imaging quality of an X-ray tube assembly, the outer shape of the X-ray tube assembly fixing tooling is an open-ended box at both ends. A U-shaped groove is provided at the bottom of the box, and the tooling window is provided in the middle of the U-shaped groove. A stepped card slot is provided on the tooling window.

[0025] Compared with the prior art, the present invention provides a multifunctional detection method and device for the imaging quality of an X-ray tube assembly. Through different parameter settings, it can realize the detection of impurity points on the window of the X-ray assembly, the detection of the uniformity of the energy distribution of X-rays in the window area, the detection of whether there is distortion in the window of X-ray imaging, and the detection of the size difference of the window of X-ray imaging. It is very convenient. The X-ray tube assembly to be tested only needs to be clamped once, and the imaging quality in three aspects can be detected. If the detection is unqualified, an alarm will be given to inform;

[0026] Further, the position of the X-ray tube assembly and the flat panel detector is adjusted by a servo motor-controlled guide rail sliding table, which is convenient to adjust, has a large adjustable distance, and a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flowchart of the method of the present invention,

[0028] Figure 2 is a schematic structural diagram of the present invention,

[0029] Figure 3 A perspective view of the internal structure of the present invention,

[0030] Figure 4 is a schematic external view of the present invention,

[0031] Figure 5 is a schematic structural diagram of the fixing tooling for the X-ray tube assembly of the present invention.

[0032] The reference numerals in the drawings are: 1 - chassis, 11 - storage box, 111 - first guide rail sliding table, 1111 - first servo motor, 112 - second guide rail sliding table, 1121 - second servo motor, 113 - storage box door, 12 - analysis box, 121 - third guide rail sliding table, 1211 - third servo motor, 122 - analysis box door, 13 - X-ray shielding housing, 2 - partition board, 3 - flat panel detector tooling, 4 - X-ray tube assembly fixing tooling, 41 - tooling window, 42 - box, 43 - U-shaped groove, 44 - stepped card slot, 5 - flat panel detector, 6 - display control center, 7 - high-voltage power supply, 71 - X-ray tube assembly connection port, 72 - high-voltage cable, 73 - low-voltage cable, 8 - 24V DC power supply, D - X-ray tube assembly to be tested. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present invention in conjunction with the drawings and embodiments, but it is not used as a basis for limiting the present invention.

[0034] Embodiment 1. A multifunctional detection device for the imaging quality of an X-ray tube assembly, the composition is as Figures 1-3As shown in the figure, it includes a chassis 1. Inside the chassis 1, there is a partition board 2. The partition board 2 divides the chassis 1 into a storage box 11 on the upper side and an analysis box 12 on the lower side. Inside the analysis box 12, there is a flat panel detector tooling 3. A flat panel detector 5 is installed on the flat panel detector tooling 3, and the flat panel detector 5 is kept horizontally placed. Inside the storage box 11, there is an X-ray tube assembly fixing tooling 4. On the X-ray tube assembly fixing tooling 4, there is a tooling window 41, and the tooling window 41 coincides with the central axis of the wire outlet window of the X-ray tube assembly D to be tested. The center of the wire outlet window of the X-ray tube assembly D to be tested is perpendicular to the flat panel detector 5. Outside the chassis 1, there is a display control center 6.

[0035] On the upper side of the storage box 11, there is a first guide rail slide 111 horizontally. The lower side of the first guide rail slide 111 is connected to a second guide rail slide 112. The lower side of the second guide rail slide 112 is connected to the X-ray tube assembly fixing tooling 4 mentioned above. The sliding directions of the first guide rail slide 111 and the second guide rail slide 112 are perpendicular. A first servo motor 1111 is fixedly installed on one side of the first guide rail slide 111 to control the first guide rail slide 111 to move along the Y-axis. A second servo motor 1121 is fixedly installed at the upper end of the second guide rail slide 112 to control the second guide rail slide 112 to move along the X-axis.

[0036] Inside the analysis box 12, there is a third guide rail slide 121 longitudinally. The third guide rail slide 121 is connected to the flat panel detector tooling 3 mentioned above. A third servo motor 1211 is fixedly installed at the upper end of the third guide rail slide 121 to control the third guide rail slide 121 to move along the Z-axis.

[0037] Outside the chassis 1, there is a shielded X-ray outer shell 13. On the shielded X-ray outer shell 13, there are a storage box door 113 and an analysis box door 122, and the analysis box door 122 is normally closed.

[0038] The outer shape of the X-ray tube assembly fixing tooling 4 is an open box 42 at both ends. At the bottom of the box 42, there is a U-shaped groove 43. In the middle of the U-shaped groove 43, there is the tooling window 41 mentioned above. On the tooling window 41, there is a stepped card slot 44.

[0039] The method of the foregoing multifunctional detection equipment for the imaging quality of an X-ray tube assembly includes the following steps:

[0040] S1 Analyze and determine that there are impurity points in the wire outlet window of the X-ray tube assembly:

[0041] S11, Place the X-ray tube assembly to be tested into the detection equipment, ensure that the wire outlet window of the X-ray tube assembly is horizontally placed, and establish a connection between the X-ray tube and the high-voltage power supply through high- and low-voltage cables;

[0042] S12. Use the display control center to open the high-voltage power supply control program and the image recognition device (image receiver) control program; set the high-voltage power supply parameters, including the kilovolt value of the tube voltage and the milliampere value of the tube current, etc.; set the image recognition device (image receiver) parameters, including the image acquisition time, etc.; set the parameters of each drive motor to meet the centering requirements and height requirements.

[0043] S13. Start the drive motor to load it to the set parameters; start the high-voltage power supply control program to make the high-voltage power supply load the preset parameters; start the image recognition device (image receiver) control program to start image acquisition.

[0044] S14. After the image acquisition is completed, save the image and turn off the high-voltage power supply.

[0045] S15. Use the gray value analysis software to analyze the image information, that is, capture impurity points and give an alarm prompt according to the set near-neighbor gray value difference.

[0046] S2 Analyze and determine that the energy distribution of the X-ray in the window area is seriously uneven:

[0047] S21. Repeat the steps of S12 to set different parameters, that is, adjust the height of the image recognition device (image receiver) and the position of the X-ray tube assembly to be measured to make the image position meet the test requirements; adjust the high-voltage power supply parameters and the image recognition device parameters, and restart the steps of S13 - S14 to make the clarity, gray level, contrast, etc. of the original image meet the test requirements.

[0048] S22. Use the gray value analysis software to analyze the image information, that is, read the maximum and minimum values of the gray level respectively according to the set area and linearity, calculate the central value and the deviation; compare with the preset deviation value, and give an alarm prompt if the deviation is too large.

[0049] S3 Analyze and determine whether the window of the X-ray image is distorted, and analyze and determine whether there is a large difference in the size of the window of the X-ray image, resulting in a difference in the image magnification:

[0050] S31. Repeat the steps of S12 to set different parameters, that is, adjust the height of the image recognition device (image receiver) and the position of the X-ray tube assembly to be measured to make the image position meet the test requirements; adjust the high-voltage power supply parameters and the image recognition device parameters, and restart the steps of S13 - S14 to make the clarity, gray level, contrast, etc. of the original image meet the test requirements.

[0051] S32. Use the gray value analysis software to analyze the image information. By reading multiple groups of distances passing through the center point of the image, calculate the deviation through the maximum value and the minimum value. Compare with the preset deviation value, and give an alarm prompt if the deviation is too large, and determine that distortion occurs (for example: oval, etc.).

[0052] In S33, for the image without distortion, the actual diameter size (average value of the distances passing through the center point) data of the window image picture is compared with the set diameter size for difference comparison; at the same time, it is possible to set an alarm for data with large differences.

[0053] In the step S12, the height of the flat panel detector 5 is adjusted by controlling the movement of the third guide rail slider 121 in the Z-axis direction.

[0054] In the step S12, the position of the X-ray tube assembly to be measured is adjusted by controlling the movement of the sliders of the first guide rail slider 111 and the second guide rail slider 112 in the X and Y-axis directions.

[0055] In the above steps, when detecting impurity points, it is required that all X-ray irradiation areas are entirely within the display area of the flat panel detector 5, and the edges are close to the edges of the flat panel detector 5, so that the gray value of the original image is low and the contrast is high.

[0056] Judgment method: Analyze the gray value of the upper area of the image through gray value analysis software. If the difference between adjacent pixel points is greater than the specified value, it is qualitatively determined as an impurity point.

[0057] The corresponding parameter characteristics are: calculation of the height of the flat panel detector, the center of the D window of the X-ray tube assembly to be measured coincides and aligns with the center of the flat panel detector, the tube voltage of the high-voltage power supply is relatively low, and the image acquisition time is relatively long.

[0058] In the above steps, when detecting the energy distribution uniformity of the window area, it is required to read the gray values of each point within the specified range on the flat panel detector 6 and compare them.

[0059] Judgment method: Analyze the gray value of the image through two ways, area and linearity, using gray value analysis software. Obtain the central value through the measured maximum and minimum values, and determine whether the energy distribution of the window area is uniform based on the magnitude of the extreme value deviation.

[0060] The corresponding parameter characteristics are: fixing the height of the flat panel detector 6, the specified area range of the flat panel detector, and the center of the window of the X-ray tube assembly coincides and aligns with the center of the flat panel detector.

[0061] In the above steps, when detecting imaging distortion, etc., it is required that all X-ray irradiation areas are entirely within the display area of the flat panel detector 6.

[0062] Judgment method: Read the shape (such as circle, ellipse, etc.) and size of the image through gray value analysis software, that is, measure multiple distances passing through the center point. Determine whether there are differences in the image magnification or distortion by the measured distances. (Note: If the deviation between the maximum value and the minimum value of multiple distances passing through the center point of the same product is less than the specified value, it is determined that there is no distortion; for different products of the same model, the average value of each product is calculated first, and then the total average value is obtained. If the deviation between the average value of each product and the total average value is less than the specified value, it is determined that the image magnification is qualified). At the same time, the actual radiation angle of the product can be calculated by using the trigonometric function method based on the distance from the flat panel detector 6 to the X-ray tube assembly D to be measured and the image size.

[0063] The corresponding parameter characteristics are: fix the height of the flat panel detector 6, and align the center of the X-ray tube assembly window with the center of the flat panel detector.

[0064] In the above steps, to obtain the required optimal gray scale and contrast: the kilovolt value of the tube voltage and the milliampere value of the tube current of the high-voltage power supply can be adjusted, as well as the image acquisition time of the flat panel detector.

Claims

1. A multi-functional detection method for the imaging quality of an X-ray tube component, characterized in that , including: Determine whether there are impurity points in the outgoing line window of the X-ray tube assembly, determine whether the energy distribution of the X-ray in the window area is seriously uneven, and determine whether the window of the X-ray imaging is distorted; Determining whether there are impurity points in the outgoing line window of the X-ray tube assembly includes the following steps: S11 When the X-ray component to be detected is placed in the detection device, ensure that the outgoing line window of the X-ray tube assembly is placed horizontally, and establish a connection between the X-ray tube and the high-voltage power supply through high-voltage cables and low-voltage cables; S12 Use the display control center to open the high-voltage power supply control program and the image recognition device control program, set the high-voltage power supply parameters, set the image recognition device parameters, and set the parameters of each drive motor; S13 Start the drive motor to load it to the set parameters, start the high-voltage power supply control program, make the high-voltage power supply load the preset parameters, start the image recognition device control program, and start taking pictures; S14 Save the image after the picture taking is completed, and turn off the high-voltage power supply; S15 Use the gray value analysis software to analyze the image information, that is, capture the impurity points and give an alarm prompt by setting the near-neighbor gray value difference; Determining whether the energy distribution of the X-ray in the window area is seriously uneven includes the following steps: S21 When the X-ray component to be detected is placed in the detection device, ensure that the outgoing line window of the X-ray tube assembly is placed horizontally, and establish a connection between the X-ray tube and the high-voltage power supply through high-voltage cables and low-voltage cables; S22 Use the display control center to open the high-voltage power supply control program and the image recognition device control program, set the high-voltage power supply parameters, set the image recognition device parameters, and set the parameters of each drive motor; S23 Start the drive motor to load it to the set parameters, start the high-voltage power supply control program, make the high-voltage power supply load the preset parameters, start the image recognition device control program, and start taking pictures; S24 Save the image after the picture taking is completed, and turn off the high-voltage power supply; S25 Use the gray value analysis software to analyze the image information, that is, read the maximum and minimum values of the gray scale respectively by setting the area and linearity, calculate the center value and the deviation; compare with the preset deviation value, and give an alarm prompt if the deviation is too large; Determining whether the window of the X-ray imaging is distorted includes the following steps: S31 When the X-ray component to be detected is placed in the detection device, ensure that the outgoing line window of the X-ray tube assembly is placed horizontally, and establish a connection between the X-ray tube and the high-voltage power supply through high-voltage cables and low-voltage cables; S32 Use the display control center to open the high-voltage power supply control program and the image recognition device control program, set the high-voltage power supply parameters, set the image recognition device parameters, and set the parameters of each drive motor; S33 Start the drive motor to load it to the set parameters, start the high-voltage power supply control program, make the high-voltage power supply load the preset parameters, start the image recognition device control program, and start taking pictures; S34 Save the image after the picture taking is completed, and turn off the high-voltage power supply; S35 Use the gray value analysis software to analyze the image information, read the distances of multiple groups of lines passing through the center point of the image, calculate the deviation through the maximum value and the minimum value, compare with the preset deviation value, and give an alarm prompt if the deviation is too large, and determine that it is distorted; For the image without distortion in S36, compare the actual diameter size data of the window image picture with the set diameter size data; it is possible to set an alarm for data with large differences.

2. A multifunctional detection device for the imaging quality of an X-ray tube assembly implementing the method according to claim 1, characterized in that: It includes a chassis (1). Inside the chassis (1), there is a partition board (2). The partition board (2) divides the chassis (1) into a storage box (11) on the upper side and an analysis box (12) on the lower side. Inside the analysis box (12), there is a flat panel detector tooling (3). A flat panel detector (5) is installed on the flat panel detector tooling (3), and the flat panel detector (5) is kept horizontally placed. Inside the storage box (11), there is an X-ray tube assembly fixing tooling (4). The X-ray tube assembly fixing tooling (4) is provided with a tooling window (41). The central axis of the tooling window (41) coincides with the central axis of the wire outlet window of the X-ray tube assembly. The center of the wire outlet window of the X-ray tube assembly is perpendicular to the flat panel detector (5). Outside the chassis (1), there is a display control center (6).

3. The multi-functional detection device for the imaging quality of the X-ray tube assembly according to claim 2, characterized in that: Horizontally on the upper side of the storage box (11), there is a first guide rail slider (111). The lower side of the first guide rail slider (111) is connected to a second guide rail slider (112). The lower side of the second guide rail slider (112) is connected to the X-ray tube assembly fixing tooling (4) mentioned above. The sliding directions of the first guide rail slider (111) and the second guide rail slider (112) are perpendicular. A first servo motor (1111) is fixedly installed on one side of the first guide rail slider (111) to control the first guide rail slider (111) to move along the Y-axis. A second servo motor (1121) is fixedly installed at the upper end of the second guide rail slider (112) to control the second guide rail slider (112) to move along the X-axis.

4. The multi-functional detection device for the imaging quality of the X-ray tube assembly according to claim 2, wherein: Vertically inside the analysis box (12), there is a third guide rail slider (121). The third guide rail slider (121) is connected to the flat panel detector tooling (3) mentioned above. A third servo motor (1211) is fixedly installed at the upper end of the third guide rail slider (121) to control the third guide rail slider (121) to move along the Z-axis.

5. The multi-functional detection device for the imaging quality of the X-ray tube assembly according to claim 2, characterized in that: Outside the chassis (1), there is a shielded X-ray outer shell (13). The shielded X-ray outer shell (13) is provided with a storage box door (113) and an analysis box door (122). The analysis box door (122) is normally closed.

6. The multi-functional detection device for the imaging quality of the X-ray tube assembly according to claim 2, wherein: The outer shape of the X-ray tube assembly fixing tooling (4) is an open-ended box (42) at both ends. The bottom of the box (42) is provided with a U-shaped groove (43). In the middle of the U-shaped groove (43), there is the tooling window (41) mentioned above. The tooling window (41) is provided with a stepped card slot (44).

Images