X-ray tube spot position calibration device and X-ray tube spot position calibration method

Abstract

The present invention discloses an X-ray tube spot position calibration device and an X-ray tube spot position calibration method, wherein the X-ray tube spot position calibration device comprises: an X-ray tube, a first setting member and a second setting member, a detector and a theodolite. The ray emission direction of the X-ray tube is a first direction, the first setting member and the second setting member are arranged along the first direction with the X-ray tube, the first setting member is located between the X-ray tube and the second setting member, the first setting member has a first slit extending along the second direction, the second setting member has a second slit extending along the second direction, the detector is used to detect the signal intensity passing through the first slit and the second slit, and the theodolite is used to construct a plane according to the positions of the first slit and the second slit. According to the X-ray tube cursor position calibration device of the present invention, the spot position of the X-ray tube can be marked more conveniently, thereby facilitating the application of X-rays in an absorption spectrometer.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray tube spot position calibration, and in particular to an X-ray tube spot position calibration device and an X-ray tube spot position calibration method. Background Art

[0002] Absorption spectrometers include a light source, a spectroscopic system, and a detection and analysis system. The position of the light source needs to be confirmed and positioned at a fixed position. However, the position of the X-ray tube spot is uncertain during operation, which is not conducive to the use of absorption spectrometers. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an X-ray tube spot position calibration device, which can conveniently mark the spot position of the X-ray tube.

[0004] The present invention further provides an X-ray tube spot position calibration method, which adopts the above-mentioned X-ray tube spot position calibration device.

[0005] According to an embodiment of the present invention, an X-ray tube spot position calibration device includes an X-ray tube, a first setting member, a second setting member, a detector, and a theodolite. The X-ray tube emits rays in a first direction, the first setting member and the second setting member are arranged along the first direction with the X-ray tube, the first setting member is located between the X-ray tube and the second setting member, the first setting member has a first slit extending along a second direction, the second setting member has a second slit extending along the second direction, the first setting member and the second setting member are adjustable in the second and third directions, the first direction, the second direction, and the third direction are perpendicular to each other, the detector is used to detect the signal strength passing through the first slit and the second slit, the theodolite is located on a side of the second setting member away from the first setting member, and the theodolite is used to construct a plane based on the positions of the first slit and the second slit.

[0006] According to an embodiment of the present invention, an X-ray tube spot position calibration device is provided with a first setting member and a second setting member whose positions are adjustable in the second direction and the third direction, and a detector is used to detect the signal strength passing through the first slit and the second slit. A plane is constructed according to the positions of the first slit and the second slit by a theodolite, so that the first slit on the first setting member is fixed at the position where the signal passing through the first slit is the strongest, and the second slit of the second setting member is fixed at the position where the signal passing through the second slit is the strongest. A plane is constructed according to the positions of the first slit and the second slit at this time, and a first straight line is formed on the surface of the X-ray tube. The X-ray tube is then rotated 180 degrees about a rotating axis extending along the second direction, so that the light outlet on the other side of the first direction is located at a position facing the first slit and the second slit. By adjusting the first slit and the second slit, the first slit and the second slit can be fixed at the position where the signal is the strongest, and a plane is constructed according to the positions of the first slit and the second slit at this time, and a second straight line is formed on the surface of the X-ray tube. At this time, the intersection of the first straight line, the second straight line and the third straight line extending along the third direction and passing through the center of the light outlet is obtained. This is the spot position of the X-ray tube. The spot position of the X-ray tube can be marked more conveniently, thereby facilitating the application of X-rays in the absorption spectrometer.

[0007] In some embodiments of the present invention, the X-ray tube spot position calibration device further includes a first lifting device and a first translation stage. The first translation stage is disposed on the first lifting device, the first lifting device being configured to drive the first translation stage to move along the second direction, and the first setting member is movably disposed on the first translation stage along the third direction.

[0008] In some embodiments of the present invention, the first translation stage has a first guide rail extending along the third direction, and the first setting member is movably disposed on the first guide rail.

[0009] In some embodiments of the present invention, the X-ray tube spot position calibration device further includes a second lifting device and a second translation stage. The second translation stage is disposed on the second lifting device, the second lifting device being configured to drive the second translation stage to move along the second direction, and the second setting member is movably disposed on the second translation stage along the third direction.

[0010] In some embodiments of the present invention, the second translation stage has a second guide rail extending along the third direction, and the second setting member is movably disposed on the second guide rail.

[0011] In some embodiments of the present invention, the first setting member includes a first placing table and a first slit member, the first placing table is movably provided on the first displacement table, the first slit member is provided on the first placing table, and the first slit is provided on the first slit member, the second setting member includes a second placing table and a second slit member, the second placing table is movably provided on the second displacement table, the second slit member is provided on the second placing table, and the second slit is provided on the second slit member, and the detector is selectively provided on the first placing table and the second placing table and is located on the side of the first slit or the second slit away from the X-ray tube.

[0012] In some embodiments of the present invention, the X-ray tube spot position calibration device further includes a support frame, and the X-ray tube is arranged on the support frame.

[0013] In some embodiments of the present invention, the X-ray tube is rotatably mounted on the support frame, and a rotation axis of the X-ray tube extends along the second direction.

[0014] The X-ray tube spot position calibration method according to an embodiment of the present invention adopts the above-mentioned X-ray tube spot position calibration device. The X-ray tube spot position calibration method includes: adjusting the heights of the first slit and the second slit along the second direction to be the same as the height of the X-ray tube light outlet; starting the X-ray tube; detecting the signal intensity by the detector and moving the first slit and the second slit along the third direction to the position where the signal is strongest; forming a first straight line on the surface of the X-ray tube after the laser emitted by the theodolite passes through the first slit and the second slit; rotating the X-ray tube 180 degrees about a rotation axis extending along the second direction; detecting the signal intensity by the detector and moving the first slit and the second slit along the third direction to the position where the signal is strongest; forming a second straight line on the surface of the X-ray tube after the laser emitted by the theodolite passes through the first slit and the second slit; and determining the intersection position of the first straight line, the second straight line, and the third straight line by using the first straight line, the second straight line, and a third straight line extending along the third direction and passing through the center of the light outlet, and using the intersection position of the first straight line, the second straight line, and the third straight line as the spot position of the X-ray tube.

[0015] According to an embodiment of the present invention, a method for calibrating an X-ray tube spot position is provided, by setting a first setting member and a second setting member whose positions are adjustable in the second direction and the third direction, and using a detector to detect the signal strength passing through the first slit and the second slit, a plane is constructed according to the positions of the first slit and the second slit by a theodolite, so that the first slit on the first setting member is fixed at the position where the signal passing through the first slit is strongest, and the second slit of the second setting member is fixed at the position where the signal passing through the second slit is strongest, and a plane is constructed according to the positions of the first slit and the second slit at this time, forming a first straight line on the surface of the X-ray tube, and then rotating the X-ray tube 180 degrees about a rotating axis extending along the second direction, so that the light outlet located on the other side of the first direction is located at a position facing the first slit and the second slit, and by adjusting the first slit and the second slit, the first slit and the second slit can be fixed at the position where the signal is strongest, and a plane is constructed according to the positions of the first slit and the second slit at this time, forming a second straight line on the surface of the X-ray tube. The intersection of the first and second lines, along with a third line extending in the third direction and passing through the center of the light outlet, is the X-ray tube spot position. This makes it easy to mark the X-ray tube spot position, facilitating the application of X-rays in absorption spectrometers. The marking method is simple and highly accurate.

[0016] In some embodiments of the present invention, detecting the signal strength by the detector and moving the first slit and the second slit to the position where the signal is strongest includes: first detecting the signal strength by the detector and moving the second slit to the position where the signal is strongest; then detecting the signal strength by the detector and moving the first slit to the position where the signal is strongest.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 is a perspective view of an X-ray tube spot position calibration device according to an embodiment of the present invention;

[0020] Figure 2 3D is a perspective view of an X-ray tube of an X-ray tube spot position calibration device according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 100. X-ray tube spot position calibration device;

[0023] 1. X-ray tube; 11. Light outlet;

[0024] 2. First setting member; 21. First placement platform; 22. First slit member; 221. First slit;

[0025] 3. Second setting member; 31. Second placement platform; 32. Second slit member; 321. Second slit;

[0026] 4. Detector; 5. Theodolite; 6. First lifting device;

[0027] 7. First translation stage; 71. First guide rail;

[0028] 8. Second lifting device;

[0029] 9. Second translation stage; 91. Second guide rail;

[0030] 10. Support frame. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] Reference below Figure 1 and Figure 2 An X-ray tube spot position calibration device 100 according to an embodiment of the present invention is described.

[0035] like Figure 1 As shown, an X-ray tube spot position calibration device 100 according to an embodiment of the present invention includes: an X-ray tube 1, a first setting member 2, a second setting member 3, a detector 4, and a theodolite 5. The X-ray tube 1 emits rays in a first direction, the axis of a light outlet 11 of the X-ray tube 1 extends along the first direction, and the X-ray tube 1 is provided with a light outlet 11 on both sides of the first direction.

[0036] The first setting member 2 and the second setting member 3 are arranged along the first direction with the X-ray tube 1, and the first setting member 2 is located between the X-ray tube 1 and the second setting member 3. The first setting member 2 has a first slit 221 extending along the second direction, and the second setting member 3 has a second slit 321 extending along the second direction. The first setting member 2 and the second setting member 3 are positionally adjustable in the second direction and the third direction. The first direction, the second direction and the third direction are perpendicular to each other. By moving the first setting member 2 and the second setting member 3 in the second direction and the third direction, the positional relationship between the first slit 221 and the second slit 321 and the light outlet 11 of the X-ray tube 1 can be adjusted.

[0037] Detector 4 is used to detect the signal strength passing through first slit 221 and second slit 321. When first setting member 2 and second setting member 3 move in the second and third directions, detector 4 can detect the signal strength of X-rays passing through first slit 221 and second slit 321 and position first slit 221 and second slit 321 at the position where the detected signal is strongest. Theodolite 5 is located on the side of second setting member 3 away from first setting member 2. Theodolite 5 is used to construct a plane based on the positions of first slit 221 and second slit 321, allowing the first slit 221 and second slit 321 to be arranged in the same plane.

[0038] When calibrating the spot position of the X-ray tube 1, the first setting member 2 and the second setting member 3 are adjusted along the second direction to bring the heights of the first slit 221 and the second slit 321 to the same level as the light outlet 11 of the X-ray tube 1. The X-ray tube 1 is then activated to emit radiation along the first direction. The first setting member 2 and the second setting member 3 are then adjusted along the third direction. The signal strength is detected by the detector 4, and the first slit 221 and the second slit 321 are moved to the point where the signal is strongest. Laser light emitted by the theodolite 5 passes through the first slit 221 and the second slit 321, forming a first straight line on the surface of the X-ray tube 1 and marking the line. The X-ray tube 1 is flipped over so that the light outlet 11 on the other side of the first direction is facing the first slit 221 and the second slit 321. The first setting member 2 and the second setting member 3 are then adjusted along the third direction. The signal strength is detected by the detector 4, and the first slit 221 and the second slit 321 are moved to the point where the signal is strongest. The laser emitted by the theodolite 5 passes through the first slit 221 and the second slit 321 to form a second straight line on the surface of the X-ray tube 1 and is engraved on the surface of the X-ray tube 1 .

[0039] The intersection position of the first straight line, the second straight line, and the third straight line extending along the third direction and passing through the center of the light outlet 11 is obtained, and the intersection position of the first straight line, the second straight line, and the third straight line is used as the spot position of the X-ray tube 1. The spot position of the X-ray tube 1 can be marked more conveniently, thereby facilitating the application of X-rays in the absorption spectrometer.

[0040] According to the X-ray tube spot position calibration device 100 of the embodiment of the present invention, a first setting member 2 and a second setting member 3 are provided with positions adjustable in the second direction and the third direction, and a detector is used to detect the signal strength passing through the first slit 221 and the second slit 321. A plane is constructed according to the positions of the first slit 221 and the second slit 321 by a theodolite 5, so that the first slit 221 on the first setting member 2 is fixed at the position where the signal passing through the first slit 221 is the strongest, and the second slit 321 on the second setting member 3 is fixed at the position where the signal passing through the second slit 321 is the strongest, and the first slit 221 on the first setting member 2 is fixed at the position where the signal passing through the first slit 221 is the strongest. A plane is constructed at the locations of the slits 221 and the second slit 321, forming a first straight line on the surface of the X-ray tube 1. The X-ray tube 1 is then rotated 180 degrees about an axis extending in the second direction, so that the light outlet 11 on the other side of the first direction is positioned toward the first slit 221 and the second slit 321. By adjusting the first slit 221 and the second slit 321, the first slit 221 and the second slit 321 can be fixed at the location of the strongest signal. A plane is then constructed based on the current positions of the first slit 221 and the second slit 321, forming a second straight line on the surface of the X-ray tube 1. The intersection of the first straight line, the second straight line, and a third straight line extending in the third direction and passing through the center of the light outlet 11 is the intersection of the first straight line, the second straight line, and the third straight line. This intersection is the spot position of the X-ray tube 1, making it convenient to mark the spot position of the X-ray tube 1, thereby facilitating the application of X-rays in absorption spectrometers.

[0041] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the X-ray tube spot position calibration device 100 also includes a first lifting device 6 and a first translation stage 7. The first translation stage 7 is disposed on the first lifting device 6, and the first lifting device 6 is used to drive the first translation stage 7 to move in the second direction. The first setting member 2 is movably disposed on the first translation stage 7 in the third direction. By providing the first lifting device 6, the first setting member 2 on the first translation stage 7 can be driven to move in the second direction, so that the first slit 221 on the first setting member 2 is at the same position as the light outlet 11 in the second direction. The first translation stage 7 then enables the first slit 221 on the first setting member 2 to be movable in the third direction. The detector 4 detects the signal strength and moves the first slit 221 to the point where the signal is strongest in the third direction, thereby determining the position where the signal passing through the first slit 221 is strongest.

[0042] Further, if Figure 1 As shown, the first translation stage 7 has a first guide rail 71 extending along the third direction, and the first setting member 2 is movably disposed on the first guide rail 71 , so that the movement accuracy of the first setting member 2 in the third direction can be higher.

[0043] In some embodiments of the present invention, Figure 1 As shown, the X-ray tube spot position calibration device 100 also includes a second lifting device 8 and a second translation stage 9. The second translation stage 9 is disposed on the second lifting device 8 and is used to drive the second translation stage 9 to move in the second direction. The second setting member 3 is movably disposed on the second translation stage 9 in the third direction. By providing the second lifting device 8, the second setting member 3 on the second translation stage 9 can be driven to move in the second direction, so that the second slit 321 on the second setting member 3 is at the same position as the light outlet 11 in the second direction. The second translation stage 9 then enables the second slit 321 on the second setting member 3 to be movable in the third direction. The detector 4 detects the signal strength and moves the second slit 321 to the point where the signal is strongest in the third direction, thereby determining the position where the signal passing through the second slit 321 is strongest.

[0044] Further, if Figure 1 As shown, the second translation stage 9 has a second guide rail 91 extending along the third direction, and the second setting member 3 is movably disposed on the second guide rail 91 , so that the movement accuracy of the second setting member 3 in the third direction can be higher.

[0045] In some embodiments of the present invention, Figure 1 As shown, the first setting member 2 includes a first placement platform 21 and a first slit member 22, the first placement platform 21 is movably arranged on the first displacement platform 7, the first slit member 22 is arranged on the first placement platform 21, and the first slit 221 is arranged on the first slit member 22; the second setting member 3 includes a second placement platform 31 and a second slit member 32, the second placement platform 31 is movably arranged on the second displacement platform 9, the second slit member 32 is arranged on the second placement platform 31, and the second slit 321 is arranged on the second slit member 32; the theodolite 4 can be selectively arranged on the first placement platform 21 and the second placement platform 31 and located at the first slit 2 21 or the side of the second slit 321 away from the X-ray tube 1, at this time, the detector 4 and the first slit member 22 are placed together on the first placement table 21, or the detector 4 and the second slit member 32 are placed together on the second placement table 31. When the first setting member 2 or the second setting member 3 is moved, the detector 4 moves together with the first slit member 22 or the second slit member 32. The detector 4 does not need to reconfirm the position after each movement of the first setting member 2 or the second setting member 3. The detector 4 can measure the strength of the signal passing through the first slit 221 or the second slit 321, and has more installation space and higher reliability.

[0046] In some embodiments of the present invention, Figure 1As shown, the X-ray tube spot position calibration device 100 also includes a support frame 10, and the X-ray tube 1 is arranged on the support frame 10, so that the position of the X-ray tube 1 can be fixed on the support frame 10. The X-ray tube 1 has a certain height in the second direction, which is convenient for installing the first setting member 2, the second setting member 3, the detector 4 and theodolite 5 and adjusting the movement in the second direction.

[0047] Further, if Figure 1 As shown, the X-ray tube 1 is rotatably disposed on the support frame 10 , and the rotation axis of the X-ray tube 1 extends along the second direction, so that the X-ray tube 1 can emit rays at different angles.

[0048] When calibrating the spot position of the X-ray tube 1, the first setting member 2 and the second setting member 3 are adjusted along the second direction to bring the heights of the first slit 221 and the second slit 321 to the same height as the light outlet 11 of the X-ray tube 1. The X-ray tube 1 is then activated to emit radiation along the first direction. The first setting member 2 and the second setting member 3 are then adjusted along the third direction, and the signal strength is detected by the detector 4. The first slit 221 and the second slit 321 are moved to the point where the signal is strongest. Laser light emitted by the theodolite 5 passes through the first slit 221 and the second slit 321, forming a first straight line on the surface of the X-ray tube 1 and marking the surface of the X-ray tube 1. The X-ray tube 1 is rotated 180 degrees about an axis extending along the second direction. The support frame 10 now serves as the fixed point for the X-ray tube 1's rotation, allowing the light outlet 11 on the other side of the first direction to be positioned toward the first slit 221 and the second slit 321. The first and second setting members 2 and 3 are then adjusted along the third direction, and the signal strength is detected by the detector 4. The first and second slits 221 and 321 are moved to the point where the signal is strongest. The laser light emitted by the theodolite 5 passes through the first and second slits 221 and 321, forming a second straight line on the surface of the X-ray tube 1 and being engraved on the surface of the X-ray tube 1.

[0049] The intersection position of the first straight line, the second straight line, and the third straight line extending along the third direction and passing through the center of the light outlet 11 is obtained, and the intersection position of the first straight line, the second straight line, and the third straight line is used as the spot position of the X-ray tube 1. The spot position of the X-ray tube 1 can be marked more conveniently, thereby facilitating the application of X-rays in the absorption spectrometer.

[0050] The following describes an X-ray tube spot position calibration device 100 according to a specific embodiment of the present invention with reference to the accompanying drawings. It should be understood that the following description is merely exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0051] Specifically, if Figure 1As shown, the X-ray tube spot position calibration device 100 includes: an X-ray tube 1, a first setting component 2 and a second setting component 3, a detector 4, a theodolite 5, a first lifting device 6, a first translation platform 7, a second lifting device 8, a second translation platform 9 and a support frame 10.

[0052] like Figure 2 As shown, the ray emission direction of the X-ray tube 1 is a first direction, the axis of the light outlet 11 of the X-ray tube 1 extends along the first direction, and the X-ray tube 1 is provided with light outlets 11 on both sides of the first direction.

[0053] like Figure 1 As shown, the first setting member 2 and the second setting member 3 are arranged along the first direction with the X-ray tube 1, the first setting member 2 is located between the X-ray tube 1 and the second setting member 3, the first setting member 2 has a first slit 221 extending along the second direction, the second setting member 3 has a second slit 321 extending along the second direction, the first setting member 2 and the second setting member 3 are positionally adjustable in the second direction and the third direction, the first direction, the second direction and the third direction are perpendicular to each other, and the positional relationship between the first slit 221 and the second slit 321 and the light outlet 11 of the X-ray tube 1 can be adjusted by moving the first setting member 2 and the second setting member 3 in the second direction and the third direction.

[0054] Detector 4 is used to detect the signal strength passing through first slit 221 and second slit 321. When first setting member 2 and second setting member 3 move in the second and third directions, detector 4 can detect the signal strength of X-rays passing through first slit 221 and second slit 321 and position first slit 221 and second slit 321 at the position where the detected signal is strongest. Theodolite 5 is located on the side of second setting member 3 away from first setting member 2. Theodolite 5 is used to construct a plane based on the positions of first slit 221 and second slit 321, allowing the first slit 221 and second slit 321 to be arranged in the same plane.

[0055] The first displacement platform 7 is arranged on the first lifting device 6, and the first displacement platform 7 has a first guide rail 71 extending along the third direction. The first setting member 2 is movably arranged on the first guide rail 71, so that the movement accuracy of the first setting member 2 in the third direction is higher. The first lifting device 6 is used to drive the first displacement platform 7 to move along the second direction. The first setting member 2 is movably arranged on the first displacement platform 7 along the third direction. The first setting member 2 includes a first placement platform 21 and a first slit member 22. The first placement platform 21 is movably arranged on the first displacement platform 7, the first slit member 22 is arranged on the first placement platform 21, and the first slit 221 is arranged on the first slit member 22. By providing the first lifting device 6, the first setting member 2 on the first translation stage 7 can be driven to move in the second direction, so that the first slit 221 on the first setting member 2 is at the same position as the light outlet 11 in the second direction. Then, the first translation stage 7 is used to make the first slit 221 on the first setting member 2 movable in the third direction, and the detector 4 is used to detect the signal strength, and the first slit 221 is moved to the point where the signal is strongest in the third direction, thereby determining the position of the point where the signal passing through the first slit 221 is strongest.

[0056] The second translation stage 9 is provided on the second lifting device 8. The second translation stage 9 has a second guide rail 91 extending along the third direction. The second setting member 3 is movably provided on the second guide rail 91, so that the movement accuracy of the second setting member 3 in the third direction can be higher. The second lifting device 8 is used to drive the second translation stage 9 to move along the second direction. The second setting member 3 is movably provided on the second translation stage 9 along the third direction. The second setting member 3 includes a second placement table 31 and a second slit member 32. The second placement table 31 is movably provided on the second translation stage 9. The second slit member 32 is provided on the second placement table 31. The second slit 321 is provided on the second slit member 32. By providing a second lifting device 8, the second setting member 3 on the second translation stage 9 can be driven to move in the second direction, so that the second slit 321 on the second setting member 3 is at the same position as the light outlet 11 in the second direction. Then, the second translation stage 9 is used to make the second slit 321 on the second setting member 3 movable in the third direction, and the detector 4 detects the signal strength, and moves the second slit 321 to the point where the signal is strongest in the third direction, thereby determining the position of the point where the signal passing through the second slit 321 is strongest.

[0057] The detector 4 can be optionally arranged on the first placement table 21 and the second placement table 31 and located on the side of the first slit 221 or the second slit 321 away from the X-ray tube 1. At this time, the detector 4 and the first slit piece 22 are placed together on the first placement table 21, or the detector 4 and the second slit piece 32 are placed together on the second placement table 31. When the first setting piece 2 or the second setting piece 3 is moved, the detector 4 moves together with the first slit piece 22 or the second slit piece 32. The detector 4 does not need to reconfirm its position each time the first setting piece 2 or the second setting piece 3 moves. The detector 4 can measure the strength of the signal passing through the first slit 221 or the second slit 321, and has more installation space and higher reliability.

[0058] The X-ray tube 1 is rotatably mounted on the support frame 10 , and the rotation axis of the X-ray tube 1 extends along the second direction, so that the X-ray tube 1 can emit rays at different angles.

[0059] When calibrating the spot position of the X-ray tube 1, the first setting member 2 and the second setting member 3 are adjusted along the second direction to bring the heights of the first slit 221 and the second slit 321 to the same height as the light outlet 11 of the X-ray tube 1. The X-ray tube 1 is then activated to emit radiation along the first direction. The first setting member 2 and the second setting member 3 are then adjusted along the third direction, and the signal strength is detected by the detector 4. The first slit 221 and the second slit 321 are moved to the point where the signal is strongest. Laser light emitted by the theodolite 5 passes through the first slit 221 and the second slit 321, forming a first straight line on the surface of the X-ray tube 1 and marking the surface of the X-ray tube 1. The X-ray tube 1 is rotated 180 degrees about an axis extending along the second direction. The support frame 10 now serves as the fixed point for the X-ray tube 1's rotation, allowing the light outlet 11 on the other side of the first direction to be positioned toward the first slit 221 and the second slit 321. The first and second setting members 2 and 3 are then adjusted along the third direction, and the signal strength is detected by the detector 4. The first and second slits 221 and 321 are moved to the point where the signal is strongest. The laser light emitted by the theodolite 5 passes through the first and second slits 221 and 321, forming a second straight line on the surface of the X-ray tube 1 and being engraved on the surface of the X-ray tube 1.

[0060] The intersection position of the first straight line, the second straight line, and the third straight line extending along the third direction and passing through the center of the light outlet 11 is obtained, and the intersection position of the first straight line, the second straight line, and the third straight line is used as the spot position of the X-ray tube 1. The spot position of the X-ray tube 1 can be marked more conveniently, thereby facilitating the application of X-rays in the absorption spectrometer.

[0061] The following describes a method for calibrating the spot position of an X-ray tube 1 according to an embodiment of the present invention.

[0062] The spot position calibration method according to an embodiment of the present invention adopts the above-mentioned X-ray tube spot position calibration device 100.

[0063] The spot position calibration method includes:

[0064] Along the second direction, the first setting member 2 and the second setting member 3 are adjusted so that the heights of the first slit 221 and the second slit 321 are the same as the height of the light outlet 11 of the X-ray tube 1 .

[0065] The X-ray tube 1 is started to emit rays from the X-ray tube 1 along a first direction.

[0066] The first setting member 2 and the second setting member 3 are adjusted along the third direction, and the intensity of the signal is detected by the detector 4, so that the first slit 221 and the second slit 321 are moved to the position where the signal is strongest.

[0067] The laser emitted by the theodolite 5 passes through the first slit 221 and the second slit 321 to form a first straight line on the surface of the X-ray tube 1 and is engraved on the surface of the X-ray tube 1 .

[0068] The X-ray tube 1 is rotated 180 degrees along the axis extending in the second direction. At this time, the support frame 10 is the fixed point for the rotation of the X-ray tube 1, so that the light outlet 11 on the other side of the first direction is located toward the first slit 221 and the second slit 321.

[0069] The first and second setting members 2 and 3 are adjusted along the third direction, and the signal strength is detected by the detector 4. The first and second slits 221 and 321 are moved to the position where the signal is strongest. The laser light emitted by theodolite 5 passes through the first and second slits 221 and 321, forming a second straight line on the surface of the X-ray tube 1 and being engraved on the surface of the X-ray tube 1.

[0070] The intersection position of the first straight line, the second straight line, and the third straight line extending along the third direction and passing through the center of the light outlet 11 is obtained, and the intersection position of the first straight line, the second straight line, and the third straight line is used as the spot position of the X-ray tube 1. The spot position of the X-ray tube 1 can be marked more conveniently, thereby facilitating the application of X-rays in the absorption spectrometer.

[0071] According to the method for calibrating the spot position of an X-ray tube 1 according to an embodiment of the present invention, a first setting member 2 and a second setting member 3 are provided with adjustable positions in the second direction and the third direction, and a detector is used to detect the signal strength passing through the first slit 221 and the second slit 321. A plane is constructed according to the positions of the first slit 221 and the second slit 321 by a theodolite 5, so that the first slit 221 on the first setting member 2 is fixed at the position where the signal passing through the first slit 221 is the strongest, and the second slit 321 on the second setting member 3 is fixed at the position where the signal passing through the second slit 321 is the strongest, and the first slit 221 on the first setting member 2 is fixed at the position where the signal passing through the first slit 221 is the strongest, and the second slit 321 on the second setting member 3 is fixed at the position where the signal passing through the second slit 321 is the strongest, and the first slit 221 on the first setting member 2 is fixed at the position where the signal passing through the second slit 321 is the strongest, and the first slit 221 on the second setting member 3 ... A plane is constructed at the locations of the first and second slits 221 and 321, forming a first straight line on the surface of the X-ray tube 1. The X-ray tube 1 is then rotated 180 degrees about an axis extending in the second direction, so that the light outlet 11 on the other side of the first direction is positioned toward the first and second slits 221 and 321. By adjusting the first and second slits 221 and 321, the first and second slits 221 and 321 can be fixed at the location where the signal is strongest. A plane is then constructed based on the current positions of the first and second slits 221 and 321, forming a second straight line on the surface of the X-ray tube 1. The intersection of the first and second straight lines, as well as a third line extending in the third direction and passing through the center of the light outlet 11, is the beam spot position of the X-ray tube 1. This allows for convenient marking of the beam spot position of the X-ray tube 1, facilitating the application of X-rays in absorption spectrometers. The marking method is relatively simple and highly accurate.

[0072] In some embodiments of the present invention, detecting the signal strength via the detector 4 and moving the first slit 221 and the second slit 321 to the location where the signal is strongest includes: first detecting the signal strength via the detector 4 and moving the second slit 321 to the location where the signal is strongest; and then detecting the signal strength via the detector 4 and moving the first slit 221 to the location where the signal is strongest. In this case, the position of the second slit 321, which is farther from the light exit port 11, is first determined, and then the position of the first slit 221, which is closer to the light exit port 11, is determined. This prevents the first slit 221 from affecting the position determination of the second slit 321, thereby improving the reliability of the determination of the beam spot position of the X-ray tube 1.

[0073] The X-ray tube spot position calibration device 100 and its operation according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0074] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0075] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for calibrating the position of an X-ray tube spot, characterized in that: An X-ray tube spot position calibration device is used, the X-ray tube spot position calibration device comprising an X-ray tube, a first setting member, a second setting member, a detector, and a theodolite. The X-ray tube emits rays in a first direction. The first setting member and the second setting member are arranged along the first direction with the X-ray tube. The first setting member is located between the X-ray tube and the second setting member. The first setting member has a first slit extending along a second direction. The second setting member has a second slit extending along the second direction. The first and second setting members are adjustable in the second and third directions. The first, second, and third directions are perpendicular to each other. The detector is used to detect the strength of signals passing through the first and second slits. The theodolite is located on a side of the second setting member away from the first setting member. The theodolite is used to construct a plane based on the positions of the first and second slits. The X-ray tube spot position calibration method includes: Along the second direction, adjusting the heights of the first slit and the second slit to be the same as the height of the light outlet of the X-ray tube; Starting the X-ray tube; Detecting the signal strength by the detector, and moving the first slit and the second slit along the third direction to a position where the signal is strongest; The laser emitted by the theodolite passes through the first slit and the second slit to form a first straight line on the surface of the X-ray tube; rotating the X-ray tube 180 degrees about an axis extending along the second direction; Detecting the signal strength by the detector, and moving the first slit and the second slit along the third direction to a position where the signal is strongest; The laser light emitted by the theodolite passes through the first slit and the second slit to form a second straight line on the surface of the X-ray tube; The intersection position of the first straight line, the second straight line and the third straight line extending along the third direction and passing through the center of the light outlet is obtained, and the intersection position of the first straight line, the second straight line and the third straight line is used as the spot position of the X-ray tube.

2. The X-ray tube spot position calibration method according to claim 1, characterized in that: Also includes: a first lifting device; The first translation stage is provided on the first lifting device, the first lifting device is used to drive the first translation stage to move along the second direction, and the first setting member is movably provided on the first translation stage along the third direction.

3. The X-ray tube spot position calibration method according to claim 2, characterized in that: The first displacement platform has a first guide rail extending along the third direction, and the first setting member is movably disposed on the first guide rail.

4. The X-ray tube spot position calibration method according to claim 2, characterized in that: Also includes: a second lifting device; The second translation stage is provided on the second lifting device, the second lifting device is used to drive the second translation stage to move along the second direction, and the second setting member is movably provided on the second translation stage along the third direction.

5. The X-ray tube spot position calibration method according to claim 4, characterized in that: The second displacement platform has a second guide rail extending along the third direction, and the second setting member is movably disposed on the second guide rail.

6. The X-ray tube spot position calibration method according to claim 4, characterized in that: The first setting member includes a first placing table and a first slit member, the first placing table is movably arranged on the first displacement table, the first slit member is arranged on the first placing table, and the first slit is arranged on the first slit member, the second setting member includes a second placing table and a second slit member, the second placing table is movably arranged on the second displacement table, the second slit member is arranged on the second placing table, and the second slit is arranged on the second slit member, the detector is detachably arranged on the first placing table and the second placing table and is located on the side of the first slit or the second slit away from the X-ray tube.

7. The X-ray tube spot position calibration method according to claim 1, characterized in that: Also includes: A support frame, on which the X-ray tube is arranged.

8. The X-ray tube spot position calibration method according to claim 7, characterized in that: The X-ray tube is rotatably mounted on the support frame, and a rotation axis of the X-ray tube extends along the second direction.

9. The X-ray tube spot position calibration method according to claim 1, characterized in that: Detecting the intensity of the signal by the detector and moving the first slit and the second slit to a position where the signal is strongest includes: First, the signal strength is detected by the detector, and the second slit is moved to the position where the signal is strongest; The intensity of the signal is then detected by the detector, and the first slit is moved to the position where the signal is strongest.

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