Centering debugging method for X-ray device, ray source and detector

Abstract

The invention relates to the technical field of X-ray devices, in particular to an X-ray device and a centering debugging method of a radiation source and a detector, the X-ray device comprises a lead room, a conveying belt, a first moving assembly, the radiation source, a second moving assembly, a flat panel detector and a centering imaging die body, and the centering imaging die body is provided with a center hole; during debugging, the centering imaging die body is placed on the conveying belt, the position of the radiation source is adjusted through the first moving assembly until the projection of the centering imaging die body and the projection of the center hole are concentric circles on the flat panel detector, and it is indicated that the focus of the radiation source is aligned with the center of the centering imaging die body; moving the flat panel detector to enable the center of the flat panel detector to coincide with the projection center of the central hole to complete detector centering; visual centering is achieved through centering imaging projection, the centering problems that the internal space of the lead room is narrow and small, and the radiation source and the detector cannot be directly observed are effectively solved, and the method has the advantages of being easy and convenient to operate and high in centering precision.

Description

Technical Field

[0001] This invention relates to the field of X-ray device technology, and in particular to an X-ray device and a method for centering and adjusting the X-ray source and detector. Background Technology

[0002] In X-ray source inspection equipment using belt conveyor, the X-ray source and flat panel detector are respectively arranged on the upper and lower moving structures of the belt conveyor. The workpiece is transported to the designated position by the belt, and the X-ray source and flat panel detector need to simultaneously move up and down to inspect the workpiece.

[0003] Typically, the focal point of the X-ray source needs to coincide with the center of the flat panel detector to ensure the effective use of the flat panel imaging surface and improve detection efficiency.

[0004] However, the focal point of the radiation source and the center of the plate cannot be observed with the naked eye, and they are separated by a belt and cannot be aligned by other means (in order to reduce the size of the lead room, the lead room is usually empty of radiation sources and plates of extra size). Summary of the Invention

[0005] The purpose of this invention is to provide an X-ray device and a method for aligning and adjusting the X-ray source and detector, which solves the problem that the focal point of the X-ray source and the center of the flat plate are not easily aligned.

[0006] To achieve the above objectives, the present invention provides an X-ray device and a method for aligning and adjusting the X-ray source and detector, comprising a lead room, a conveyor belt, a first moving component, a X-ray source, a second moving component, a flat panel detector, and an alignment imaging phantom. The conveyor belt is disposed inside the lead room, the first moving component is disposed inside the lead room, the X-ray source is connected to the lead room via the first moving component, the second moving component is disposed inside the lead room, the flat panel detector moves with the lead room via the second moving component, and the alignment imaging phantom is disposed on the conveyor belt. The first moving component and the second moving component are respectively used to drive the X-ray source and the flat panel detector to perform two-dimensional motion on a plane. The alignment imaging phantom has a central hole, which is disposed at the center of the alignment imaging phantom and extends through the alignment imaging phantom.

[0007] The conveyor belt includes a drive roller, a support roller, and a belt. The drive roller is rotatably connected to the lead room and is located inside the lead room. The support roller is rotatably connected to the lead room and is located inside the lead room. The belt is rotatably connected to the drive roller and the support roller, and is fitted over both sides of the drive roller and the support roller.

[0008] The first movable component includes a first threaded rod, a threaded seat, a base, and a guide member. The first threaded rod is rotatably connected to the lead room and is located inside the lead room. The threaded seat is threadedly connected to the first threaded rod and is sleeved on the first threaded rod. The base is fixedly connected to the threaded seat and to the flat panel detector, and is located on one side of the threaded seat. The guide member is disposed inside the lead room.

[0009] The first movable component further includes a second threaded rod and a mounting base. The second threaded rod is rotatably connected to the base and is disposed on the base. The mounting base is threadedly connected to the second threaded rod, slidably connected to the base, and fixedly connected to the radiation source.

[0010] The centering imaging phantom is made of copper and is cylindrical in shape, with the central hole located at the center of the phantom.

[0011] On the other hand, the present invention also includes a method for aligning and adjusting a radiation source and a detector, comprising the following steps: Place the centering imaging phantom on the belt; The movement of the X-ray source and the flat panel detector is controlled so that the centering imaging phantom is projected onto the flat panel detector. Adjust the position of the ray source until the projection of the central hole and the outer diameter of the centering imaging phantom are concentric circles; Adjust the position of the flat panel detector so that its center coincides with the projection center of the central hole; Record the alignment position between the X-ray source and the flat panel detector.

[0012] In the step of adjusting the position of the radiation source: The focus of the X-ray source is determined by manually observing whether the projected image is a concentric circle to determine whether it passes perpendicularly through the central aperture of the centering imaging phantom; if the projection is not concentric, the position of the X-ray source is further fine-tuned until it reaches a concentric state.

[0013] This invention discloses an X-ray device and a method for aligning and debugging the X-ray source and detector. During debugging, the alignment imaging phantom is first placed on the conveyor belt. The position of the X-ray source is adjusted by the first moving component until the projections of the alignment imaging phantom and the central hole on the flat panel detector form concentric circles, indicating that the focal point of the X-ray source is aligned with the center of the alignment imaging phantom. Then, the flat panel detector is moved so that its center coincides with the center of the projection of the central hole, completing the detector alignment. Finally, the positions of both are recorded as a linkage reference. This invention utilizes the alignment imaging projection to achieve visual alignment, effectively solving the alignment problem of limited space inside a lead room where the X-ray source and detector cannot be directly observed. It has the advantages of simple operation and high alignment accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the X-ray device according to the first embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the installation structure of the X-ray source and flat panel detector according to the first embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the central hole in the first embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the first moving component according to the second embodiment of the present invention.

[0019] Figure 5 This is a flowchart of the alignment and debugging method of the X-ray device, radiation source, and detector of the present invention.

[0020] In the diagram: 101-Lead room, 102-Conveyor belt, 103-First moving component, 104-X-ray source, 105-Second moving component, 106-Flat panel detector, 107-Centering imaging phantom, 108-Center hole, 109-Active roller, 110-Support roller, 111-Belt, 112-Display, 201-First threaded rod, 202-Threaded seat, 203-Base, 204-Guide component, 205-Guide rod, 206-Guide seat, 207-Second threaded rod, 208-Mounting base, 209-First servo motor, 210-Second servo motor. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] First embodiment: Please see Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the overall structure of an X-ray device. Figure 2 This is a schematic diagram of the installation structure of the X-ray source and the flat panel detector. Figure 3 This is a schematic diagram of the central hole.

[0023] This invention provides an X-ray device and a method for aligning and adjusting the X-ray source and detector. The device includes a lead chamber 101, a conveyor belt 102, a first moving component 103, a X-ray source 104, a second moving component 105, a flat panel detector 106, and an alignment imaging phantom 107. The conveyor belt 102 includes a drive roller 109, a support roller 110, and a belt 111. By moving the X-ray source 104, when the projection of the central hole 108 onto the outer diameter of the alignment imaging phantom 107 is circular and concentric, it indicates that the focal point of the X-ray source 104 coincides with the center of the phantom. Then, by moving the flat panel detector 106, when the center of the flat panel detector 106 coincides with the projection center of the central hole 108, it indicates that the center of the flat panel detector 106 coincides with the center of the alignment imaging phantom 107, thus achieving alignment with the X-ray source 104. It is understood that the aforementioned method can be used to facilitate the alignment of the X-ray source 104 and the flat panel detector 106.

[0024] In this specific embodiment, the conveyor belt 102 is disposed inside the lead room 101, the first moving component 103 is disposed inside the lead room 101, the radiation source 104 is connected to the lead room 101 through the first moving component 103, the second moving component 105 is disposed inside the lead room 101, the flat panel detector 106 moves with the lead room 101 through the second moving component 105, and the centering imaging phantom 107 is disposed on the conveyor belt 102. The first moving component 103 and the second moving component 105 are respectively used to drive the radiation source 104 and the flat panel detector 106 to perform two-dimensional motion on a plane. The centering imaging phantom 107 has a central hole 108, which is located at the center of the centering imaging phantom 107 and penetrates through it. The lead room 101 has an inlet and an outlet on its left and right sides, respectively. To allow the workpiece to be tested to enter and exit the lead chamber 101, the conveyor belt 102 is used to transport the workpiece to be tested to the X-ray source 104 for detection. The X-ray source 104 and the flat panel detector 106 are arranged facing each other inside the lead chamber 101, located on the upper and lower sides of the conveyor belt 102, respectively. The first moving component 103 and the second moving component 105 can drive the X-ray source 104 and the flat panel detector 106 to move. The X-ray source 104 is used to generate X-rays. The X-ray beam emitted by it passes vertically through the conveyor belt 102 and the centering imaging phantom 107 or the workpiece to be tested located on it. Finally, it is received by the flat panel detector 106 and converted into a digital image. A display 112 is provided outside the lead chamber 101. The flat panel detector 106 is connected to the display 112 through a data cable, and can transmit the received and converted digital image to the display 112 for display in real time.

[0025] During the alignment operation, the alignment imaging phantom 107 is placed on the conveyor belt 102 and transported to the X-ray source 104 via the conveyor belt 102. After the X-ray source 104 is activated, the operator observes the real-time projection image transmitted by the flat panel detector 106 through the display 112 outside the lead room 101. First, the X-ray source 104 is moved in a two-dimensional plane by controlling the first moving component 103. When the outer contour projection of the alignment imaging phantom 107 and the projection of the central hole 108 are observed to form concentric circles on the display 112, it indicates that the focal point of the X-ray source 104 is perpendicularly aligned with the central hole 108. At this time, the position coordinates of the first moving component 103 are recorded. Then, keeping the position of the X-ray source 104 unchanged, the second moving component 105 is controlled to move the X-ray source 104 to the center hole 104. When the flat panel detector 106 moves, and the central cross mark in the imaging area of ​​the flat panel detector 106 completely coincides with the center of the projection of the central hole 108, it indicates that the geometric center of the flat panel detector 106 has been precisely aligned with the central hole 108. At this time, the position coordinates of the second moving component 105 are recorded. After the alignment is completed, the system automatically saves the alignment position parameters of the X-ray source 104 and the flat panel detector 106. After the alignment imaging phantom 107 is removed, the X-ray source 104 and the flat panel detector 106 can perform synchronous linkage detection based on this alignment position in subsequent workpiece inspection. This alignment and debugging method achieves precise alignment of the invisible X-ray focus in a confined space through visual operation outside the lead room 101, which ensures both operational safety and alignment accuracy, and effectively solves the alignment problem caused by space limitations and visual obstruction.

[0026] The centering imaging phantom 107 is made of copper. Copper has a high density and strong attenuation ability for X-rays, which can form a significant contrast between light and dark in the projected image, thereby ensuring a high contrast between the outer contour of the phantom and the projection of the central hole 108, resulting in clear and sharp imaging.

[0027] Secondly, the conveyor belt 102 includes a drive roller 109, a support roller 110, and a belt 111. The drive roller 109 is rotatably connected to the lead chamber 101 and is located inside the lead chamber 101. The support roller 110 is rotatably connected to the lead chamber 101 and is located inside the lead chamber 101. The belt 111 is rotatably connected to the drive roller 109 and the support roller 110, and is sleeved on both sides of the drive roller 109 and the support roller 110. The drive roller 109 is powered by a drive motor (not shown in the figure) to drive the belt 111 to rotate cyclically in a predetermined direction, thereby conveying the centering imaging phantom 107 or the workpiece to be tested placed on it.

[0028] Second embodiment: Based on the first embodiment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of the first moving component. In this embodiment, the first moving component 103 includes a first threaded rod 201, a threaded seat 202, a base 203, a guide member 204, a second threaded rod 207, and a mounting base 208. The guide member 204 includes a guide rod 205 and a guide seat 206.

[0029] In this specific embodiment, the first threaded rod 201 is rotatably connected to the lead room 101 and located inside the lead room 101; the threaded seat 202 is threadedly connected to the first threaded rod 201 and sleeved on the first threaded rod 201; the base 203 is fixedly connected to the threaded seat 202 and fixedly connected to the flat panel detector 106, and located on one side of the threaded seat 202; the guide member 204 is disposed inside the lead room 101; a first servo motor 209 is disposed on the lead room 101, the output end of the first servo motor 209 is connected to the first threaded rod 201, the first servo motor 209 drives the first threaded rod 201 to rotate, thereby driving the threaded seat 202 to move, and the threaded seat 202 drives the base 203 to move along the axial direction of the first threaded rod 201.

[0030] The guide rod 205 is fixedly connected to the lead room 101 and located inside the lead room 101; the guide seat 206 is slidably connected to the guide rod 205 and fixedly connected to the base 203, and is sleeved on the guide rod 205; the guide rod 205 guides the movement of the guide seat 206, thereby guiding the movement of the base 203 and improving the stability of the base 203 when it moves.

[0031] Secondly, the second threaded rod 207 is rotatably connected to the base 203 and is disposed on the base 203; the mounting base 208 is threadedly connected to the second threaded rod 207 and slidably connected to the base 203, and fixedly connected to the radiation source 104; a second servo motor 210 is mounted on the base 203, and the output end of the second servo motor 210 is connected to the second threaded rod 207. The second servo motor 210 drives the second threaded rod 207 to rotate, causing the second threaded rod 207 to drive the mounting base 208 to move, thereby driving the radiation source 104 to move, so that the radiation source 104 moves along the axial direction of the first threaded rod 201 and the second threaded rod 207, enabling the radiation source 104 to perform two-dimensional motion in the plane; the structure of the second moving component 105 is the same as that of the first moving component 103, and will not be described in detail here.

[0032] On the other hand, please see Figure 5 , Figure 5 This is a flowchart of the alignment and debugging method of the X-ray device, radiation source, and detector of the present invention.

[0033] This invention also includes a method for aligning and adjusting a radiation source and a detector, comprising the following steps: S1: Place the centering imaging phantom 107 on the belt 111; S2: Control the movement of the X-ray source 104 and the flat panel detector 106 so that the centering imaging phantom 107 is projected onto the flat panel detector 106; S3: Adjust the position of the X-ray source 104 until the projection of the central hole 108 and the outer diameter of the centering imaging phantom 107 are concentric circles; S4: Adjust the position of the flat panel detector 106 so that its center coincides with the projection center of the central hole 108; S5: Record the alignment position of the X-ray source 104 and the flat panel detector 106.

[0034] Specifically, in the step of adjusting the position of the radiation source 104: The focus of the X-ray source 104 is determined by manually observing whether the projected image is a concentric circle to determine whether it passes perpendicularly through the central hole of the centering imaging phantom 107; if the projection is not concentric, the position of the X-ray source 104 is further fine-tuned until it reaches a concentric state.

[0035] In this embodiment, the operator places the centering imaging phantom 107 on the belt 111, and transports the centering imaging phantom 107 directly below the X-ray source 104 via the belt 111. The X-ray source 104 is then activated, and simultaneously the first moving component 103 and the second moving component 105 are controlled to initially position the X-ray source 104 and the flat panel detector 106, ensuring that the projection of the centering imaging phantom 107 appears completely within the imaging area of ​​the flat panel detector 106. The real-time image is then displayed on the monitor 112 outside the lead room 101. The operator adjusts the first moving component 103 through the control system, specifically by controlling the operation of the first servo motor 209 and the second servo motor 210, driving the first threaded rod 201 and the second threaded rod 207 to move the X-ray source 104. 04. Moving within a two-dimensional plane, during this process, the operator observes the projected image on the display 112. When the projection of the outer contour of the imaging module and the projection of the central hole 108 form a concentric circle, the adjustment is stopped. This indicates that the focal point of the X-ray source 104 has accurately passed perpendicularly through the central hole 108. Then, keeping the position of the X-ray source 104 unchanged, the second moving component 105 is adjusted to move the flat panel detector 106, so that the central cross mark of the flat panel detector 106 completely coincides with the projection center of the central hole 108. At this point, the precise centering of the flat panel detector 106 is completed. Finally, the control system records and stores the position parameters of the X-ray source 104 and the flat panel detector 106 at this time, which can be directly called in subsequent workpiece inspection to ensure that the X-ray source 104 and the detector can achieve precise vertical linkage detection.

[0036] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An X-ray device, characterized in that, The device includes a lead room, a conveyor belt, a first moving component, a radiation source, a second moving component, a flat panel detector, and a centering imaging phantom. The conveyor belt is disposed inside the lead room, the first moving component is disposed inside the lead room, the radiation source is connected to the lead room through the first moving component, the second moving component is disposed inside the lead room, the flat panel detector moves with the lead room through the second moving component, and the centering imaging phantom is disposed on the conveyor belt. The first moving component and the second moving component are respectively used to drive the radiation source and the flat panel detector to perform two-dimensional motion on a plane. The centering imaging phantom has a central hole, which is located at the center of the centering imaging phantom and extends through the centering imaging phantom.

2. The X-ray apparatus as described in claim 1, characterized in that, The conveyor belt includes a drive roller, a support roller, and a belt. The drive roller is rotatably connected to the lead room and is located inside the lead room. The support roller is rotatably connected to the lead room and is located inside the lead room. The belt is rotatably connected to the drive roller and the support roller, and is fitted over both sides of the drive roller and the support roller.

3. The X-ray apparatus as described in claim 1, characterized in that, The first movable component includes a first threaded rod, a threaded seat, a base, and a guide member. The first threaded rod is rotatably connected to the lead room and is located inside the lead room. The threaded seat is threadedly connected to the first threaded rod and is sleeved on the first threaded rod. The base is fixedly connected to the threaded seat and to the flat panel detector, and is located on one side of the threaded seat. The guide member is disposed inside the lead room.

4. The X-ray apparatus as described in claim 3, characterized in that, The first moving component further includes a second threaded rod and a mounting base. The second threaded rod is rotatably connected to the base and disposed on the base. The mounting base is threadedly connected to the second threaded rod, slidably connected to the base, and fixedly connected to the radiation source.

5. The X-ray apparatus as described in claim 1, characterized in that, The centering imaging phantom is made of copper and is cylindrical in shape, with the central hole located at the center of the phantom.

6. A method for aligning and adjusting a radiation source and detector, using an X-ray device as described in any one of claims 1-5, characterized in that, Includes the following steps: Place the centering imaging phantom on the belt; The movement of the X-ray source and the flat panel detector is controlled so that the centering imaging phantom is projected onto the flat panel detector. Adjust the position of the ray source until the projection of the central hole and the outer diameter of the centering imaging phantom are concentric circles; Adjust the position of the flat panel detector so that its center coincides with the projection center of the central hole; Record the alignment position between the X-ray source and the flat panel detector.

7. The alignment and debugging method for the radiation source and detector as described in claim 6, characterized in that, In the step of adjusting the position of the radiation source: The focus of the X-ray source is determined by manually observing whether the projected image is a concentric circle to determine whether it passes perpendicularly through the central aperture of the centering imaging phantom; if the projection is not concentric, the position of the X-ray source is further fine-tuned until it reaches a concentric state.

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