CT equipment

Abstract

The CT equipment comprises an objective table, a radiation source, a detector and a driving assembly. The objective table is used for bearing a detected object; the radiation source is arranged on one side of the objective table, the radiation source comprises an emitting end, the emitting end is used for emitting rays to a detected object, the rays emitted by the emitting end are arranged around a first axis, and an emitting source, emitting the rays, of the emitting end is located on the first axis; the detector is arranged on the other side of the objective table and comprises a receiving end, and the receiving end is used for receiving rays penetrating through the detected object; the driving assembly is connected to the objective table and used for driving the objective table to rotate around the second axis and / or move along the third axis. Wherein the second axis is arranged on the objective table in a penetrating manner; the first axis intersects with the second axis, and the first axis is not perpendicular to the second axis; the third axis intersects with the center line of the objective table. According to the CT equipment, the imaging effect of the detected object can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of CT equipment, in particular to CT equipment. BACKGROUND

[0002] CT (Computed Tomography), i.e. computer tomography, is widely used in non-destructive testing field due to its ability to detect internal details of an object.

[0003] In the related art, a CT device is used to scan and detect an object. Specifically, the CT device includes a radiation source, a carrier table, a detector, and a driver. The object is arranged on the carrier table. The radiation source is configured to emit radiation to the object. The detector is configured to receive the radiation transmitted through the object, and further convert the received radiation into an image of the actual structure of the object. The driver is configured to control the movement of the carrier table, and further control the relative position of the object with respect to the radiation source.

[0004] However, when scanning a plate-shaped or shell-shaped object, the imaging field of view of the object cannot meet the requirements, resulting in poor imaging effect of the object. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide a CT device to solve the problem of poor imaging effect of the object when scanning a plate-shaped or shell-shaped object.

[0006] A CT device includes:

[0007] a carrier table configured to carry an object to be detected;

[0008] a radiation source arranged on one side of the carrier table, the radiation source including an emission end configured to emit radiation to the object to be detected, the radiation emitted by the emission end being arranged around a first axis, and the emission source of the radiation emitted by the emission end being located on the first axis;

[0009] a detector arranged on the other side of the carrier table, the detector including a receiving end configured to receive the radiation transmitted through the object to be detected;

[0010] a driving assembly connected to the carrier table and configured to drive the carrier table to rotate around a second axis and / or move along a third axis;

[0011] wherein the second axis passes through the carrier table, the first axis intersects the second axis, and the first axis is not perpendicular to the second axis; and the third axis intersects a center line of the carrier table.

[0012] In some embodiments, the third axis is parallel to the first axis.

[0013] In some embodiments, the included angle between the first axis and the second axis is 30-60°.

[0014] In some embodiments, the second axis is parallel to the center line of the object table.

[0015] In some embodiments, the driving assembly comprises:

[0016] a first driving member connected to the object table;

[0017] a second driving member connected to the object table.

[0018] In some embodiments, the first driving member comprises a driving motor, and a power output shaft of the driving motor is connected to the object table.

[0019] In some embodiments, the object table comprises a fixed part and a rotating part, the rotating part is rotatably connected to the fixed part, and the power output shaft of the driving motor is connected to the rotating part.

[0020] In some embodiments, the second driving member comprises an electric push rod and a connecting member, the connecting member is connected to a moving end of the electric push rod and the fixed part.

[0021] In some embodiments, the fixed part and the connecting member are integrally formed.

[0022] In some embodiments, the second driving member comprises an electric push rod and a connecting member, the connecting member is connected to a moving end of the electric push rod and the object table.

[0023] The CT device comprises an object table, a ray source, a detector, and a driving assembly. The object table is used for carrying a detected object; the ray source is arranged on one side of the object table, and comprises an emitting end used for emitting rays to the detected object. The rays emitted by the emitting end are arranged around a first axis, and the emitting source of the rays emitted by the emitting end is located on the first axis. The detector is arranged on the other side of the object table, and comprises a receiving end used for receiving rays transmitted through the detected object. The driving assembly is connected to the object table, and is used for driving the object table to rotate around a second axis and / or move along a third axis. The second axis penetrates the object table; the first axis intersects the second axis, and the first axis is not perpendicular to the second axis; and the third axis intersects a center line of the object table.

[0024] The CT device of the present application, since the rays emitted by the emitting end are arranged around the first axis, the second axis is arranged through the object table; the first axis intersects with the second axis, and the first axis is not perpendicular to the second axis, that is, the rays emitted by the ray source all intersect with the second axis and are not perpendicular, that is, the connecting line between the ray source and the detector is always inclined to the center line of the object table, and then the connecting line between the ray source and the detector is always inclined to the detected object, so that the imaging effect of the detected object can be improved. At the same time, since the driving assembly is used to drive the object table to move along the third axis, and the third axis intersects with the center line of the object table, so that the position between the object table and the ray source can be adjusted through the movement of the object table along the third axis, so that the imaging effect of the detected object can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the CT device in an embodiment of the present application.

[0026] Figure 2 It is a schematic view of the ray source emitting rays to the detector in an embodiment of the present application.

[0027] Figure 3 It is a structural schematic view of the CT device from another perspective in an embodiment of the present application.

[0028] Figure 4 It is another structural schematic view of the CT device in an embodiment of the present application.

[0029] REFERENCE SIGNS:

[0030] 1, CT device;

[0031] 11, object table; 12, ray source; 13, detector; 14, driving assembly; 15, shell; 16, button; 17, power supply;

[0032] 111, fixed part; 112, rotating part;

[0033] 121, emitting end;

[0034] 131, receiving end;

[0035] 141, first driving member; 142, second driving member;

[0036] 1421, electric push rod; 1422, connecting member. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of the terms "include", "comprise" or "contain" herein should not be understood as limiting the present application to the features or steps described herein, but rather the use of these terms is intended to cover the presence of the features or steps described herein as well as the presence of other features or steps not described herein.

[0038] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0040] In the present application, unless otherwise specifically defined and limited, if the terms "mount", "connect", "connect", "fix" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0043] It should be noted that the computed laminography (CL) is for the detection of TSV (through silicon via), BGA (Ball Grid Array), PCB (Printed Circuit Board), IGBT (Insulated Gate Bipolar Transistor), electronic chips, biological fossils and other plate-shaped components. Its technical feature is to use a flat CT (Computed Tomography) device for scanning. The CT device is a computer tomography device. When the CL technology is used, the object can be clearly and accurately reproduced in high resolution and three-dimensional structure. The principle is to obtain original data through a micro-focus X-ray source, a high-resolution flat panel detector and a precision electromechanical integrated physical platform, and to reconstruct the image algorithm supported by a new imaging theory to form high-precision three-dimensional structure information. Since the CT device can detect the internal details of the plate-shaped object, it is widely used in the field of non-destructive testing.

[0044] Traditional CT equipment has high environmental requirements, needing to consider factors such as space, load-bearing capacity, and installation. For the inspection of small, plate-like structural components, there is an urgent need for a compact industrial CT that can simultaneously meet the requirements for high-resolution inspection of plate-like structural components. Therefore, through the design and development of a desktop CT non-destructive testing control system and precision mechanical systems, a new type of industrial CT equipment that is small in size, lightweight, and easy to install has been developed to meet the testing needs of laboratories in major universities, research institutions, large state-owned enterprises, and listed companies in China.

[0045] Meanwhile, during the scanning and detection of the object under test using CT equipment, rotating the object allows for scanning from various angles, thereby identifying the object's specific structure. In traditional CT equipment, the object only rotates relative to the X-ray source, while the relative distance between the stage and the X-ray source remains constant. Furthermore, due to variations in object size, different magnifications need to be considered, requiring adjustment of the stage's distance from the X-ray source.

[0046] To address the aforementioned issues, related technologies employ a driver within the CT scanner. This driver controls the relative movement of the object under test, thereby adjusting the distance and position of the object relative to the CT scanner and enabling switching between different magnifications.

[0047] See Figure 1 and Figure 2 As shown. An embodiment of this application provides a CT device 1 including a stage 11, a radiation source 12, a detector 13, and a drive assembly 14. The stage 11 is used to carry the object to be tested; the radiation source 12 is disposed on one side of the stage 11, and the radiation source 12 includes an emitting end 121 for emitting radiation towards the object to be tested. The radiation emitted by the emitting end 121 is arranged around a first axis, and the emission source of the radiation emitted by the emitting end 121 is located on the first axis; the detector 13 is disposed on the other side of the stage 11, and the detector 13 includes a receiving end 131 for receiving radiation transmitted through the object to be tested; the drive assembly 14 is connected to the stage 11 and is used to drive the stage 11 to rotate around a second axis and / or move along a third axis. The second axis passes through the stage 11; the first axis intersects the second axis, but the first axis is not perpendicular to the second axis; the third axis intersects the centerline of the stage 11.

[0048] It should be noted that the detected object in the present application is exemplarily a plate-shaped, shell-shaped structure as described above, but the detected object in the present application can also be other types of structures. It should be noted that the detected object is exemplarily limited to a plate-shaped, shell-shaped structure in the present application because the CT device 1 of the present application can improve the imaging effect of the plate-shaped, shell-shaped structure during scanning detection of the plate-shaped, shell-shaped structure compared with the related CT device 1, but it can be understood that the CT device 1 of the present application can also scan and detect other types of structures. Here, the related content will not be described again.

[0049] In addition, it should be noted that the first axis is the a-axis in the Figure 1 , the second axis is the b-axis in the Figure 1 , and the third axis is the c-axis in the Figure 1 .

[0050] Specifically, during scanning detection of the detected object by the CT device 1, the detected object is placed on the object table 11, the relative position of the detected object relative to the ray source 12 is adjusted by the driving assembly 14, so that the rays emitted by the ray source 12 penetrate the detected object, and then the rays transmitted through the detected object are received by the detector 13, and the three-dimensional image reconstruction of the detected object is realized by cooperating with the electronic device.

[0051] During adjustment of the position of the detected object relative to the ray source 12, the object table 11 can be driven to rotate around the second axis by the driving assembly 14, so that scanning detection of each angle of the detected object can be realized. At the same time, the object table 11 can be driven to move along the third axis by the driving assembly 14, so that the distance between the detected object and the ray source 12 can be adjusted, and scanning detection of the detected object under different magnification can be realized.

[0052] It can be understood that since scanning detection of each angle of the detected object can be realized, and scanning detection of the detected object under different magnification can be realized, the imaging effect of the detected object can be improved.

[0053] Further, the first axis intersects the second axis, and the first axis and the second axis are not perpendicular; the third axis intersects the center line of the object table 11, that is, the rays emitted by the ray source 12 are always inclined to the detected object, and the moving direction of the detected object is always inclined to the center line of the object table 11, so that in the process of the ray source 12 emitting rays to the detected object, the ray range can better cover the external shape of the detected object by being inclined to the direction of the detected object, thereby improving the imaging effect of the detected object. In addition, even if the ray range of the ray source 12 cannot completely cover the external shape of the detected object, the magnification of the detected object can be changed by moving the detected object in the inclined direction, so that the ray range of the ray source 12 completely covers the external shape of the detected object, thereby further improving the imaging effect of the detected object.

[0054] It should be noted that when the detected object moves towards the direction close to the ray source 12, the imaging of the detected object by the rays received by the detector 13 is magnified. Conversely, when the detected object moves away from the ray source 12, the imaging of the detected object by the rays received by the detector 13 is reduced.

[0055] In addition, the present application only needs to drive the object table 11 to move along the third axis by the driving assembly 14, that is, the change of the imaging magnification can be realized, the efficient switching of the imaging magnification can be facilitated, thereby facilitating the adjustment of the imaging magnification of the detected object, thereby improving the imaging effect of the detected object while improving the scanning and detecting efficiency of the detected object.

[0056] In addition, the present application only needs to cooperate between the ray source 12, the detector 13 and the driving assembly 14, that is, the scanning and detecting of the detected object can be realized, the overall structure is simple, the starting time is short, the scanning speed is fast, the detection task can be completed quickly, the work efficiency can be improved, and it is suitable for daily high-frequency detection needs.

[0057] In some embodiments, the third axis is parallel to the first axis.

[0058] In this way, in the process of the ray source 12 emitting rays to the detected object, when the relative position of the detected object needs to be adjusted, since the third axis is parallel to the first axis, only the movement of the detected object along the third axis needs to be controlled, that is, the detected object can be ensured to be always in the direction of the ray emission of the ray source 12, that is, when the detected object is away from the position of the ray source 12, the area covered by the detected object by the rays of the ray source 12 is necessarily larger than the area covered by the detected object by the rays of the ray source 12 when the detected object is close to the position of the ray source 12. On the one hand, the imaging effect of the detected object can be improved; on the other hand, the adjustment operation of the operator can be facilitated, and the operation of the operator can be simplified.

[0059] In some embodiments, the angle between the first axis and the second axis is 30-60°.

[0060] Therefore, since the angle between the first axis and the second axis is 30-60°, the range of the rays emitted by the ray source 12 can cover the direction with smaller size of the detected object, so that the range of the rays can cover the external shape of the detected object in this angle range, and the imaging effect of the detected object can be improved.

[0061] For example, the angle between the first axis and the second axis is any angle within the range of 30-60°, such as 30°, 40°, 55°, 60°, etc. It can be understood that when the angle between the first axis and the second axis is 45°, the range of the rays emitted by the ray source 12 can optimally cover the external shape of the detected object at this angle, so that the imaging effect of the detected object can be best.

[0062] In some embodiments, the second axis is parallel to the center line of the object table 11.

[0063] Therefore, it can be ensured that the object table 11 always rotates around the center line of the object table 11 during rotation, so that the stability of the object table 11 during rotation can be improved, and the stability of the detected object during rotation on the object table 11 can be improved, and the reliability during detection of the detected object can be improved.

[0064] In some embodiments, the driving assembly 14 includes a first driving member 141 and a second driving member 142. The first driving member 141 is rotationally connected to the object table 11, and the second driving member 142 is connected to the object table 11.

[0065] Therefore, the rotation and movement of the object table 11 can be controlled by the first driving member 141 and the second driving member 142 respectively, so that the interference phenomenon of the object table 11 during rotation and movement can be avoided, and only rotation or movement operation of the detected object can be performed. For example, when the detected object needs to adjust the corresponding angle, only the rotation of the detected object needs to be controlled by the first driving member 141, and when the detected object needs to adjust the distance from the ray source 12, only the movement of the detected object needs to be controlled by the second driving member 142, so that the operation of the operator can be facilitated.

[0066] In some embodiments, the first driving member 141 includes a driving motor, and a power output shaft of the driving motor is connected to the object table 11.

[0067] Therefore, the object table 11 can be directly driven to rotate under the driving of the driving motor, so that the rotation operation of the object table 11 can be realized, and the operation convenience of the operator can be improved.

[0068] In some embodiments, referring to Figure 3 As shown, the object table 11 comprises a fixed part 111 and a rotating part 112, the rotating part 112 is rotationally connected to the fixed part 111, and the power output shaft of the driving motor is connected to the rotating part 112.

[0069] In this way, the object table 11 can be supported by the fixed part 111 to rotate the rotating part 112 relative to the fixed part 111 through the power output shaft of the driving motor, so as to realize the rotating operation of the object table 11.

[0070] It should be noted that the rotating part 112 is a gear. Of course, the rotating part 112 can also be other transmission structures to realize the connection with the power output shaft of the driving motor. Here, the structure type of the rotating part 112 is not limited.

[0071] In some embodiments, the second driving member 142 comprises an electric push rod 1421 and a connecting member 1422, and the connecting member 1422 is connected to the moving end of the electric push rod 1421 and the fixed part 111.

[0072] In this way, when the moving operation of the object table 11 is needed, only the movement of the electric push rod 1421 needs to be controlled, that is, the fixed part 111 of the object table 11 can be moved by the moving end of the electric push rod 1421, and then the object table 11 can be moved, which can facilitate the operation process of the operator.

[0073] In some embodiments, the fixed part 111 and the connecting member 1422 are integrally formed.

[0074] In this way, the connection stability of the fixed part 111 and the connecting member 1422 can be ensured, on the one hand, the second driving member 142 can stably drive the object table 11 to move; on the other hand, since the fixed part 111 and the connecting member 1422 are integrally formed, the vibration generated when the object table 11 moves can be reduced during the process that the second driving member 142 drives the object table 11 to move, so as to improve the reliability of the object table 11 during the moving process.

[0075] In some embodiments, the second driving member 142 comprises an electric push rod 1421 and a connecting member 1422, and the connecting member 1422 is connected to the moving end of the electric push rod 1421 and the object table 11.

[0076] In this way, when the moving operation of the object table 11 is needed, only the movement of the electric push rod 1421 needs to be controlled, that is, the fixed part 111 of the object table 11 can be moved by the moving end of the electric push rod 1421, and then the object table 11 can be moved, which can facilitate the operation process of the operator.

[0077] It can be understood that the connecting piece 1422 only needs to be connected to the electric push rod 1421 and the object table 11, and the manner in which the connecting piece 1422 connects the electric push rod 1421 and the object table 11 is not limited.

[0078] Optionally, the connecting piece 1422 comprises a first connecting unit and a second connecting unit, and the first connecting unit and the second connecting unit are arranged in an inclined manner, so that the space utilization of the connecting piece 1422 connecting the electric push rod 1421 and the object table 11 can be improved. Here, the first connecting unit and the second connecting unit are connected to form a shape similar to "L", and the specific shape of the connecting piece 1422 is also not limited in the present application.

[0079] In some embodiments, referring to Figure 4 As shown in the figure, the CT device 1 further comprises a shell 15. The object table 11, the ray source 12, the detector 13 and the driving assembly 14 are all arranged in the shell 15.

[0080] In this way, on the one hand, the object table 11, the ray source 12, the detector 13 and the driving assembly 14 can be supported and accommodated by the shell 15; on the other hand, during the process of the ray source 12 emitting rays, the operator can be prevented from being harmed by the rays, and the safety of the operation process of the operator can be improved.

[0081] In some embodiments, referring to Figure 4 As shown in the figure, the CT device 1 further comprises a plurality of buttons 16 and a power supply 17. The plurality of buttons 16 are arranged on the shell 15 and electrically connected to the ray source 12, the detector 13 or the driving assembly 14; the power supply 17 is arranged on the shell 15 and electrically connected to the plurality of buttons 16.

[0082] In this way, the operator can directly control the start or stop of the buttons 16 to realize the work or stop of the ray source 12, the detector 13 or the driving assembly 14, which can facilitate the operation process of the operator, and at the same time, the safety of the operation process of the operator can be improved through the operation of pressing the buttons 16.

[0083] In some embodiments, the CT device 1 further comprises an electronic device. The electronic device is electrically connected to the detector 13 and is used to convert the rays received by the detector 13 into a three-dimensional image.

[0084] It should be noted that the ray source 12 emits high-energy X-rays, and when these rays pass through the detected object, different degrees of absorption and attenuation will be generated according to the density and thickness of different materials inside the detected object.

[0085] Thus, after the rays transmitted through the object to be detected are received by the detector 13, the received rays can be converted into a two-dimensional projection image in advance, a series of two-dimensional projection images are collected by performing multiple scans on the object to be detected from different angles, and the three-dimensional image structure of the object to be detected is finally reconstructed through algorithm processing of the electronic device, so that further analysis and detection of the object to be detected are facilitated.

[0086] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0087] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A CT apparatus characterized by comprising: include: The stage is used to hold the object being tested. A radiation source is disposed on one side of the stage. The radiation source includes an emitting end, which is used to emit radiation toward the object being tested. The radiation emitted by the emitting end is arranged around a first axis, and the emission source of the radiation emitted by the emitting end is located on the first axis. A detector is located on the other side of the stage, and the detector includes a receiving end for receiving rays transmitted through the object being tested. A drive assembly, connected to the stage, is used to drive the stage to rotate about a second axis and / or move along a third axis; The second axis passes through the platform; the first axis intersects the second axis, and the first axis is not perpendicular to the second axis; the third axis intersects the center line of the platform.

2. The CT apparatus according to claim 1, characterized by, The third axis is parallel to the first axis.

3. The CT apparatus according to claim 1, characterized by, The angle between the first axis and the second axis is 30°-60°.

4. The CT apparatus according to claim 1, characterized by, The second axis is parallel to the center line of the stage.

5. The CT apparatus according to claim 1, characterized by, The driving component includes: The first driving component is connected to the platform; The second drive unit is connected to the stage.

6. The CT apparatus according to claim 5, characterized by The first driving component includes a drive motor, and the power output shaft of the drive motor is connected to the platform.

7. The CT apparatus of claim 6, wherein The platform includes a fixed part and a rotating part, the rotating part being rotatably connected to the fixed part, and the power output shaft of the drive motor being connected to the rotating part.

8. The CT apparatus according to Claim 7, characterized by The second driving component includes an electric push rod and a connector, wherein the connector is connected to the moving end of the electric push rod and the fixed part.

9. The CT apparatus of claim 8, wherein The fixing part and the connecting part are integrally formed structures.

10. The CT apparatus of claim 5, wherein The second driving component includes an electric push rod and a connector, the connector being connected to the moving end of the electric push rod and the platform.

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