Ray detector imaging test device

Abstract

The utility model provides an imaging testing device for a ray detector, and belongs to the technical field of ray detectors. Comprising a support base, the support base is provided with a two-dimensional scanning moving table through a supporting structure, the middle of the two-dimensional scanning moving table is hollowed out, and an object needing to be imaged is placed in the hollowed-out position; a two-dimensional detector moving table is further installed on the support base, a probe table is installed on the two-dimensional detector moving table, and the probe table is used for placing a detector. By adopting the technical scheme, the position of the detector can be adjusted in the three-dimensional direction, including the distance between the detector and a ray, the vertical alignment between the detector and the ray, the distance between the detector and an object to be imaged and the like, so that the detector can be ensured to be accurately aligned with a ray source in the imaging process; the phenomena of imaging smear, deformation and the like caused by position deviation are avoided, and finally the imaging effect of the ray detector is improved.

Description

Technical Field

[0001] This utility model belongs to the field of X-ray detector technology, and specifically relates to an X-ray detector imaging test device. Background Technology

[0002] X-ray imaging equipment is widely used in medical diagnosis, national defense security inspection, environmental monitoring, industrial non-destructive testing and space exploration. Among them, the X-ray detector is the core of the X-ray imaging equipment and determines the quality of X-ray imaging. Accurately evaluating and analyzing the detection and imaging performance of the X-ray detector is the core content of developing high-performance X-ray detectors.

[0003] In the process of X-ray detection imaging testing, the detector test stand is a core component. Currently, there are no complete professional products, either domestically or internationally, for evaluating the performance of X-ray detectors. Most are simple test stands modified from conventional detectors by research institutes, scientific research institutions, and companies. These test stands lack detector-ray alignment capabilities, multi-dimensional position adjustment capabilities, and the ability to perform high-resolution X-ray imaging tests, making it impossible to accurately evaluate the detection performance and imaging capabilities of X-ray detectors. Therefore, there is an urgent need for a X-ray detector imaging test stand that can achieve the above functions to solve these problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a radiation detector imaging test device. This device solves the problems of existing radiation detector test brackets lacking detector-ray alignment functions, multi-dimensional position adjustment functions, and the ability to perform high-resolution radiation imaging tests. As a result, the detection sensitivity and imaging capabilities of radiation detectors cannot be accurately analyzed, which in turn affects the equipment application of radiation detectors. In addition, existing detector test brackets rely entirely on manual alignment based on the operator's experience, which lacks standardization and repeatability, resulting in huge differences in the performance evaluation results of the same type of radiation detector by different institutions.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An imaging test device for X-ray detectors includes a support base, a two-dimensional scanning stage connected to the support base via a support structure, the two-dimensional scanning stage being used to place the object to be detected, and a hollow space being provided on the two-dimensional scanning stage.

[0007] A lifting mechanism is provided on the support base, and a two-dimensional detector moving stage is connected to the upper end of the lifting mechanism. A probe station is provided on the two-dimensional detector moving stage, and the probe station is used to install the detector.

[0008] The two-dimensional scanning stage is located above the probe station.

[0009] The further improvement of this utility model is as follows:

[0010] Preferably, the support structure includes several peripheral liftable brackets, the upper ends of which are connected to the two-dimensional scanning mobile stage.

[0011] Preferably, the two-dimensional scanning moving stage includes a scanning support stage, on which an XY direction scanning moving stage is slidably connected; the XY direction scanning moving stage includes an X direction scanning moving stage and a Y direction scanning moving stage that are stacked and slidably connected; and each of the scanning support stage, the X direction scanning moving stage, and the Y direction scanning moving stage is provided with a hollow space.

[0012] Preferably, the X-direction scanning moving stage or the Y-direction scanning moving stage is provided with a transparent stage for placing the detector.

[0013] Preferably, the lifting mechanism is a lifting bracket, which is a crossbar structure, and the height of the crossbar structure is adjusted by a height adjustment knob.

[0014] Preferably, the two-dimensional detection mobile stage includes an X-direction detector mobile stage and a Y-direction detector mobile stage stacked together.

[0015] Preferably, the two-dimensional detector moving stage is connected to the probe station via a probe station fixing platform.

[0016] Preferably, a detector placement cavity is provided in the middle of the probe station, and a plurality of probes are provided around the detector placement cavity; the probes are used to connect to the detector for electrical signals.

[0017] Preferably, the periphery of the detector placement cavity is provided with several latches.

[0018] Preferably, a sealing cover is fixedly connected above the probe station, a lens is disposed in the sealing cover, and a vacuum tube is connected in the space formed by the probe station and the sealing cover.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention proposes an imaging testing device for a radiation detector, comprising a support base. A two-dimensional scanning stage is mounted on the support base via a supporting structure. The two-dimensional scanning stage has a hollow center, where the object to be imaged is placed. A two-dimensional detector stage is also mounted on the support base, and a probe station is mounted on the two-dimensional detector stage for placing the detector. Both the two-dimensional scanning stage and the two-dimensional moving stage are mounted on the same support base plate, but they are independently controlled and moved without interference. By adopting the above technical solution, the position of the detector can be adjusted in three dimensions, including the distance between the detector and the radiation source, the perpendicular alignment of the detector and the radiation source, and the distance between the detector and the object to be imaged. This ensures that the detector is accurately aligned with the radiation source during imaging, thereby avoiding image trailing and distortion caused by positional offset, ultimately improving the imaging effect of the radiation detector. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the X-ray detector imaging test bracket described in this utility model;

[0022] Figure 2 This is a schematic diagram of the base plate of the X-ray detector imaging test bracket described in this utility model;

[0023] (a) is a top view; (b) is a side view.

[0024] Figure 3 This is a schematic diagram of the liftable support rod of the X-ray detector imaging test bracket described in this utility model;

[0025] Figure 4 This is a schematic diagram of the probe station fixing platform of the X-ray detector imaging test bracket described in this utility model;

[0026] Figure 5 This is a schematic diagram of a two-dimensional scanning moving stage for an imaging test bracket for a radiation detector as described in this utility model;

[0027] Figure 6 This is a schematic diagram of the two-dimensional scanning moving stage of the X-ray detector imaging test bracket described in this utility model after being covered;

[0028] The components include: 1. External adjustable support; 2. Support base; 3. Adjustable support; 4. Two-dimensional detector moving stage; 5. Probe platform adjusting support; 6. Probe station fixed platform; 7. Probe station; 8. Two-dimensional scanning moving stage.

[0029] 201. Threaded hole; 101. Fixed part; 102. Moving part; 103. Lock; 301. Cross rod; 302. Height adjustment knob; 401. X-direction detector moving stage; 402. Y-direction detector moving stage; 403. Horizontal adjustment knob; 404. Screw; 405. Support rod; 406. Slider; 407. Base; 701. Detector placement cavity; 702. Probe; 703. Buckle; 704. Sealing cover; 705. Through lens; 706. Vacuum tube; 801. Scanning support stage; 802. X-direction scanning moving stage; 803. Y-direction scanning moving stage; 804. Hollowed-out space. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings:

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] See Figure 1 This utility model discloses an imaging test bracket for an X-ray detector, including an outer lifting bracket 1, a bracket base 2, a lifting bracket 3, a two-dimensional detector moving stage 4, a probe platform lifting bracket 5, a probe station fixed platform 6, a probe station 7, and a two-dimensional scanning moving stage 8.

[0033] Several peripheral liftable supports 1 are provided and mounted on the support base 2. The upper ends of the peripheral liftable supports 1 collectively support the two-dimensional scanning moving stage 8. The space within the peripheral liftable supports 1 houses the detector's related devices. Specifically, a lifting support 3 is mounted on the support base 2, and a two-dimensional detector moving stage 4 is fixedly mounted on the lifting support 3. Several probe platform lifting supports 5 are mounted on the two-dimensional detector moving stage 4. The upper ends of all the probe platform lifting supports 5 are fixedly connected to a probe station fixing platform 6, and a probe station 7 is fixedly mounted on the probe station fixing platform 6. The probe station 7 is located below the two-dimensional scanning moving stage 8. The probe station 7 is used to place the detector, and the two-dimensional scanning moving stage 8 is used to place the material to be detected. During the detection process, X-rays are emitted from above the two-dimensional scanning moving stage 8, pass through the material to be detected, and are detected by the detector.

[0034] Some embodiments of this utility model are described in [reference]. Figure 2 Figure (a) shows a schematic diagram of the structure of the support base 2. The support base 1 is provided with threaded holes 210, the size of which is adjustable and the spacing is adjustable. The threaded holes 210 are fixed to the threaded holes 10, so that the threaded holes 210 can move in the position of the support base 1, thereby adapting to the two-dimensional scanning moving stage 8 of different sizes.

[0035] Preferred, see Figure 2 In Figure (b), the support base 1 is provided with several insulating pads 9, the height and diameter of which are adjustable.

[0036] See Figure 3 In some embodiments of this utility model, the support base 1 is provided with four peripheral liftable support rods 2, which are located at the four corners of the two-dimensional scanning moving stage 8. When sufficient support force is provided to the two-dimensional scanning moving stage 8, a sufficiently large space can be formed to accommodate other structures. The peripheral liftable support rod 2 includes a fixed part 101 and a movable part 102 that are slidably connected and coaxially arranged, with the fixed part 101 fitted onto the outside of the movable part 102. The peripheral liftable support rod 2 includes a locking buckle 103 for fixing the relative position between the movable part 101 and the fixed part 102.

[0037] Preferably, the liftable support rod 2 has a lower threaded hole 11 and an upper threaded hole 12 at its upper and lower ends, respectively. The lower threaded hole 11 is used to fix the liftable support rod 2 on the support base 1, and the upper threaded hole 12 is used to connect with the two-dimensional scanning moving stage 8.

[0038] For some embodiments of this utility model, see [link / reference]. Figure 4This is a schematic diagram of the lifting bracket 3 and the two-dimensional detector moving stage 4. The lifting bracket 3 is mounted on a base, which is detachably connected to the bracket base 2, allowing the entire lifting structure to move relative to the bracket base 2. The lifting bracket 3 has a crossbar structure, including two hinged crossbars 301. A height adjustment knob 302 is provided on the side, and the height adjustment knob 302 is connected to the end of a screw. The upper ends of the two crossbars 301 are threadedly connected to the screw. By adjusting the screw through the height adjustment knob 302, the movement of the two crossbars 301 relative to the screw can be adjusted. The two-dimensional detector moving stage 4 is located on the upper end of the lifting bracket 3. The two-dimensional detector moving stage 4 includes an X-direction detector moving stage 401 and a Y-direction detector moving stage 402. The X-direction detector moving stage 401 and the Y-direction detector moving stage 402 are stacked on the upper end of the lifting bracket 3, and the stacking order of the X-direction detector moving stage 401 and the Y-direction detector moving stage 402 can be adjusted. Figure 4 As can be seen, the two detector moving stages have the same structure, each including a base 407, a screw 404, a support rod 405, a slider 406, and a horizontal adjustment knob 406. The screw 404 is positioned between the two support rods 405, with all three parallel and balanced. The slider 406 passes through both the screw 404 and the support rods 405. The screw 404 and the two support rods 405 are fixedly mounted on the base at both ends by a fixing structure. The horizontal adjustment knob 406 is connected to one end of the screw 404. The horizontal adjustment knob 406 drives the screw 404 to rotate, thereby causing the slider 406 to move relative to the screw 404 and the two support rods 405. For example, the X-direction detector moving stage 401 is positioned at the upper end of the lifting bracket 3, and the Y-direction detector moving stage 402 is positioned at the upper end of the slider 406 in the X-direction detector moving stage 401.

[0039] It should be understood that the above-mentioned lifting support 3 and two-dimensional detection moving platform 4 are just one example. Any structure that can realize the above-mentioned movement mechanism in the X, Y and Z directions can replace the above-mentioned structure.

[0040] The uppermost slider of the two-dimensional detector moving stage 4 is connected to the probe station fixed platform 6. The probe station 7 is fixedly installed on the probe station fixed platform 6 by several probe station lifting brackets 5. The position of the probe station 7 in the Z direction can be adjusted by the lifting brackets 3, and the displacement of the probe station 7 in the X and Y directions can be adjusted by the two-dimensional detector moving stage 4.

[0041] For some embodiments of this utility model, see [link / reference]. Figure 5The probe station 7 has a detector placement cavity 701 in the middle. The detector placement cavity 701 has several buckles 703 on its side for fixing the four corners of the detector. The probe station 7 has several probes 702. When the detector is installed in the detector placement cavity 701, the probes 702 are connected to the detector. The probes 702 are also connected to an electrical signal for transmitting the detector image to an external device.

[0042] Further, see Figure 6 A sealing cover 704 is fixedly connected above the probe station 7. A penetrating lens 705 is provided in the sealing cover 704. The position of the penetrating lens 705 corresponds to the detector, so that the detector can pass through the penetrating lens 705 for detection. The probe station 7 and the sealing cover 704 are fixedly connected, and the detector can be placed inside. A vacuum tube 704 is connected to the probe station 7 or the sealing cover 704. During the detection process, a vacuum device is connected through the vacuum tube 704, so that the detector can be detected in a vacuum environment to avoid the influence of other interference. By placing the detector in a vacuum environment, the sealing device of the probe station and the sealing cover 704 can also prevent the detector from being affected by other electromagnetic waves.

[0043] In some embodiments of this utility model, referring to the figures, the two-dimensional scanning moving stage 8 includes a scanning support stage 801, an X-direction scanning moving stage 802, and a Y-direction scanning moving stage 803 arranged sequentially from bottom to top. Each of the scanning support stage 801, the X-direction scanning moving stage 802, and the Y-direction scanning moving stage 803 has a hollow space 804. A transparent support plate, such as a glass plate or other transparent material that allows X-ray transmission, is provided on the hollow space 804 to support the object being inspected. The X-direction scanning moving stage 802 and the scanning support stage 801 are slidably connected, and the X-direction scanning moving stage 802 and the Y-direction scanning moving stage 803 are slidably connected. This structure allows the object being inspected, placed in the hollow space 804 within the Y-direction scanning moving stage 803, to be moved in both the X and Y directions.

[0044] It should be noted that the above structure can also be configured with the X-direction scanning stage 802 below and the Y-direction scanning stage 803 above, depending on the actual situation.

[0045] This utility model belongs to the field of performance testing and evaluation of X-ray detectors, specifically an imaging test bracket for X-ray detectors. It includes a bracket base 2 with a threaded hole 201. A peripheral liftable bracket 1 is fixed to the threaded hole 201. A latch 103 is provided on the peripheral liftable bracket 1. A two-dimensional scanning stage 8 is mounted on the peripheral liftable bracket. The two-dimensional scanning stage 8 has a hollow center, where the object to be imaged is placed. A two-dimensional detector stage 4 is mounted on the bracket base 2. A probe station 7 fixing platform lifting bracket 5 is connected to the two-dimensional detector stage 4. A probe station fixing platform 6 is mounted on the probe station fixing platform lifting bracket 5, and a probe station 7 is mounted on the probe station fixing platform 6. The probe station 7 is used to hold the detector under test.

[0046] After the detector is placed on the probe stage, the position of the probe stage 7 is first adjusted in the X and Y directions using the 2D detector moving stage 4 to align the detector with the upper X-ray source. The height of the probe stage 7 is then adjusted using the lifting bracket 3 on the 2D detector moving stage 4, making the vertical distance between the detector and the upper X-ray source adjustable. During testing, the 2D probe stage can be fixed, and the 2D scanning moving stage can be controlled to scan in two dimensions to achieve object imaging. Both the 2D scanning moving stage and the 2D moving stage are mounted on the same support base plate, but they are independently controlled and moved without interference. This imaging test bracket enables X-ray imaging of both single-pixel detectors and linear array detectors, facilitating the alignment between the detector and the X-ray source and improving the spatial resolution of the imaging.

[0047] By adopting the above technical solution, the two-dimensional moving stage installed on the support base, combined with the lifting support rod design, can adjust the position of the detector in three dimensions, including the distance between the detector and the ray, the vertical alignment of the detector and the ray, and the distance between the detector and the object to be imaged. This ensures that the detector is accurately aligned with the ray source during the imaging process, thereby avoiding imaging ghosting, distortion, and other phenomena caused by positional offset, and ultimately improving the imaging effect of the ray detector.

[0048] The above-disclosed embodiments are only some examples and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An imaging testing device for a radiation detector, characterized in that, Includes a support base (2), which is connected to a two-dimensional scanning moving stage (8) via a support structure. The two-dimensional scanning moving stage (8) is used to place the object to be detected, and a hollow space (804) is provided on the two-dimensional scanning moving stage (8). A lifting mechanism is provided on the support base (2), and a two-dimensional detector moving stage (4) is connected to the upper end of the lifting mechanism. A probe station (7) is provided on the two-dimensional detector moving stage (4), and the probe station (7) is used to install the detector. The two-dimensional scanning stage (8) is above the probe station (7).

2. The X-ray detector imaging test device according to claim 1, characterized in that, The support structure includes several peripheral liftable brackets (1), the upper ends of which are connected to the two-dimensional scanning moving stage (8).

3. The X-ray detector imaging test device according to claim 1, characterized in that, The two-dimensional scanning moving stage (8) includes a scanning support stage (801), on which XY direction scanning moving stages are slidably connected; the XY direction scanning moving stages include stacked and slidably connected X direction scanning moving stages (802) and Y direction scanning moving stages (803); each of the scanning support stage (801), X direction scanning moving stages (802) and Y direction scanning moving stages (803) is provided with a hollow space (804).

4. The X-ray detector imaging test device according to claim 3, characterized in that, The X-direction scanning stage (802) or the Y-direction scanning stage (803) is provided with a transparent stage for placing the detector.

5. The X-ray detector imaging test device according to claim 1, characterized in that, The lifting mechanism is a lifting bracket (3), which is a crossbar structure. The height of the crossbar structure is adjusted by a height adjustment knob (302).

6. The X-ray detector imaging test device according to claim 1, characterized in that, The two-dimensional detector mobile stage (4) includes an X-direction detector mobile stage (401) and a Y-direction detector mobile stage (402) stacked together.

7. The X-ray detector imaging test device according to claim 1, characterized in that, The two-dimensional detector moving stage (4) is connected to the probe station fixing platform (6) and the probe station (7).

8. The X-ray detector imaging test device according to claim 1, characterized in that, The probe station (7) has a detector placement cavity (701) in the middle position, and a number of probes (702) are arranged around the detector placement cavity (701); the probes (702) are used to connect to the detector for electrical signals.

9. The X-ray detector imaging test device according to claim 8, characterized in that, The detector placement cavity (701) is surrounded by several latches (703).

10. The X-ray detector imaging test device according to claim 1, characterized in that, A sealing cover (704) is fixedly connected above the probe station (7), and a lens (705) is provided in the sealing cover (704). A vacuum tube (706) is connected in the space formed by the probe station (7) and the sealing cover (704).

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