Imaging system, control method thereof and flat panel detector

Abstract

The invention discloses an imaging system, a control method thereof and a flat panel detector, and relates to the technical field of detection. The imaging system comprises an emitting part, a first detection part, a second detection part and a driving part, the emitting part, the first detection part and the second detection part can all face a detected object, the emitting part is used for emitting rays, the detection area of the first detection part is larger than that of the second detection part, and the driving part is used for driving the emitting part to emit rays. And the driving piece is connected with the second detection piece, and the driving piece can drive the second detection piece to move to a target position. According to the scheme, the problem that an existing imaging system cannot consider low cost, a large one-time shooting area and a good imaging effect at the same time can be solved.

Description

Technical Field

[0001] The present application belongs to the field of detection technology, and specifically relates to an imaging system and a control method thereof, and a flat panel detector. Background Art

[0002] Radiographic imaging (electromagnetic radiation such as X, γ and other particles) is a comprehensive high-tech technology that uses a beam of radiation to pass through the object being measured (such as workpieces of different shapes, human organs, etc.) and project it onto the detector array. Through electronic readout and computer data acquisition and analysis systems, the image of the internal structure of the object being measured is reproduced on the computer screen. It is currently widely used in the fields of medical testing and industrial testing.

[0003] In radiographic imaging technology, the radiographic sensor is the core component of the imaging system. Under low-cost conditions, the radiographic sensor is divided into large-sized radiographic sensors and small-sized radiographic sensors. The large-sized radiographic sensor has the characteristic of a large imaging area in a single shot, but the image quality is poor and the details are not clear enough; while the small-sized radiographic sensor has the characteristic of good imaging effect, but the shooting area is small and the image of the entire object cannot be obtained. In practical applications, the cost of the camera sensor with good imaging effect and large shooting area is relatively high. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an imaging system and a control method thereof, and a flat-panel detector, which can solve the problem that the current imaging system cannot take into account low cost, a large shooting area and good imaging effect at the same time.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] An embodiment of the present application provides an imaging system, including a transmitting element, a first detecting element, a second detecting element and a driving element. The transmitting element, the first detecting element and the second detecting element can all be directed toward an object to be detected. The transmitting element is used to emit rays. The detection area of ​​the first detecting element is larger than the detection area of ​​the second detecting element. The driving element is connected to the second detecting element, and the driving element can drive the second detecting element to move to a target position.

[0007] In a second aspect, an embodiment of the present application further provides a flat panel detector, comprising a device body and the above-mentioned imaging system, wherein the imaging system is disposed on the device body.

[0008] In a third aspect, an embodiment of the present application further provides a control method of an imaging system, which is applied to the above-mentioned imaging system, comprising:

[0009] Controlling the emitting element to emit rays toward the detected object;

[0010] Detecting a first ray passing through the detected object by the first detecting element to form a first image;

[0011] Determining whether secondary imaging is required according to the first image;

[0012] When secondary imaging is required, the second detecting member is driven to move to a target position, and the second ray passing through the detected object is detected by the second detecting member to form a second image.

[0013] In the embodiment of the present application, the imaging system includes a transmitting member, a first detection member, a second detection member and a driving member. The transmitting member, the first detection member and the second detection member can all be directed toward the object to be detected. The transmitting member is used to emit rays. The detection area of ​​the second detection member is smaller than the detection area of ​​the first detection member. When the imaging quality requirement is low, only the first detection member can be used for shooting and detection; when the imaging quality requirement is high, after the first detection member is finished shooting, the driving member drives the second detection member to move to the target position, and the second detection member shoots and detects the part of the object to be detected, thereby forming a clear image with a large size and good imaging effect. It can be seen from this that the present application sets the first detection member and the second detection member with different detection areas at the same time, so as to make flexible selections according to actual detection needs, and on the basis of satisfying the large shooting area and good imaging effect at one time, it is conducive to reducing the cost of the imaging system. Therefore, the implementation of the present application can solve the problem that the current imaging system cannot take into account low cost, large shooting area and good imaging effect at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an imaging system disclosed in an embodiment of the present application;

[0015] Figure 2 This is a flow chart of a control method of an imaging system disclosed in an embodiment of the present application.

[0016] Description of reference numerals:

[0017] 100-launching parts;

[0018] 200-first test piece;

[0019] 300-second detection piece;

[0020] 400 - driving member, 410 - first driving member, 420 - second driving member, 430 - third driving member;

[0021] 500-detected object;

[0022] 600-control device;

[0023] 700-Stage. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0026] The imaging system and control method thereof, and the flat panel detector provided in the embodiments of the present application are described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0027] refer to Figure 1The embodiment of the present application discloses an imaging system, including a transmitting member 100, a first detecting member 200, a second detecting member 300 and a driving member 400. Optionally, the first detecting member 200 and the second detecting member 300 can be imaging panels, and of course can be other structural forms, which are not specifically limited here. The driving member 400 can be a cylinder, a hydraulic cylinder, or a shape memory alloy member, etc., which are not specifically limited in the embodiment of the present application. The transmitting member 100, the first detecting member 200 and the second detecting member 300 can all face the detected object 500. When the detected object 500 is located on the stage 700, the transmitting member 100 can move to the top or side of the detected object 500 through the first driving mechanism. The transmitting member 100 is used to emit rays. Of course, the transmitting member 100 can also be fixedly arranged. The driving member 400 is connected to the second detecting member 300, and the driving member 400 can drive the second detecting member 300 to move to the target position. The detection area of ​​the second detecting member 300 is smaller than the detection area of ​​the first detecting member 200. The first detection member 200 can be moved to the bottom or side of the detected object 500 by the second driving mechanism, so as to detect the rays passing through the detected object 500 and form a first image. Of course, the first detection member 200 can also be fixedly arranged; when the local area of ​​the first image needs to be imaged again due to insufficient clarity of the detected object 500, or the inspection result of a specific position area on the detected object 500 cannot be determined based on the first image, and the detected object 500 needs to be imaged again, the driving member 400 drives the second detection member 300 to move to the target position to detect the rays passing through the local area of ​​the detected object 500, thereby improving the image quality and the imaging detection result; when the second detection member 300 completes the detection, the driving member 400 can drive the second detection member 300 to reset to return to the initial position to avoid being damaged by long-term exposure to the rays. It should be noted that when secondary imaging is required, the area of ​​the object to be detected 500 that needs to be photographed and detected again can be obtained based on the first image, and the aforementioned target position is determined based on the local position on the object to be detected 500 that needs to be detected again, that is, the position of the second detection component 300 when the image of the local area is obtained again is the target position described here.

[0028] It should be noted that when there are multiple local areas in the first image that need to be imaged again, the driving member 400 will drive the second detection member 300 to move to multiple target positions for detection accordingly.

[0029] In the embodiment of the present application, when the detection image based on the first detection member 200 can already meet the detection requirements of the detected object 500, such as but not limited to the situation that the detection imaging quality requirements are low, only the first detection member 200 can be used for shooting and detection; when the detection image based on the first detection member 200 cannot meet the detection requirements of the detected object 500, such as but not limited to the situation that the detection imaging quality requirements are high, after the first detection member 200 is shot, the driving member 400 drives the second detection member 300 to move to the target position, and the second detection member 300 performs shooting and detection on the part of the detected object 500, thereby forming a clear image with a large size and good imaging effect, and further confirming the detection result. It can be seen from this that the present application simultaneously sets the first detection member 200 and the second detection member 300 with different detection areas, so as to make flexible selections according to actual detection needs, and on the basis of satisfying the large shooting area and good imaging effect at one time, the cost of the imaging system is reduced, and the accuracy of the detection result can be guaranteed. Therefore, the implementation of the present application can solve the problem that the current imaging system cannot take into account low cost, large shooting area and good imaging effect at one time.

[0030] In the embodiment of the present application, the driving member 400 is used to drive the second detection member 300 to move to the target position, and any structure that can meet the driving function can be flexibly selected. In addition, based on the moving direction involved in the process of the second detection member 300 moving to the target position, the driving member 400 may include a driving component that can drive the second detection member 300 to move in different directions.

[0031] Optionally, the number of the driving member 400 can be one, and the driving member 400 can drive the second detection member 300 to move to the target position along a certain direction. In this case, the movement position of the second detection member 300 is relatively limited, resulting in a smaller detection range of the second detection member 300. Therefore, in an optional embodiment, the number of the driving member 400 is at least two, and the driving member 400 includes a first driving member 410 and a second driving member 420, and the first driving member 410 and the second driving member 420 are both connected to the second detection member 300, specifically: the output shaft of the first driving member 410 is connected to the second detection member 300, and the second driving member 420 is connected to the second detection member 300 through the first driving member 410, or the output shaft of the second driving member 420 is directly connected to the second detection member 300, and the first driving member 410 is connected to the second detection member 300 through the second driving member 420. The first driving member 410 can drive the second detecting member 300 to move along the first direction, and the second driving member 420 can drive the second detecting member 300 to move along the second direction, so that the second detecting member 300 moves to the target position, wherein the first direction is perpendicular to the second direction. When the output shaft of the first driving member 410 is connected to the second detecting member 300, the second driving member 420 drives the first driving member 410 and the second detecting member 300 to move along the second direction together, and then the first driving member 410 drives the second detecting member 300 to move along the first direction, so that the second detecting member 300 reaches the target position; when the output shaft of the second driving member 420 is directly connected to the second detecting member 300, the first driving member 410 can drive the second driving member 420 and the second detecting member 300 to move along the first direction together, and then the second driving member 420 drives the second detecting member 300 to move along the second direction, so that the second detecting member 300 reaches the target position. In this solution, the second detection member 300 is driven to move in different directions by the first driving member 410 and the second driving member 420 respectively, so that the second detection member 300 can move within a certain plane, which is beneficial to improving the movement flexibility of the second detection member 300, thereby expanding the detection range of the second detection member 300; in addition, since the second detection member 300 can move within a certain plane, when the second detection member 300 is located outside the stage after being reset, the second detection member 300 can be located on any side of the stage, which is beneficial to avoid other structures.

[0032] In further optional embodiments, the driver 400 also includes a third driver 430, the third driver 430 is connected with the second detection member 300, and the third driver 430 can drive the second detection member 300 to move along the third direction, so that the second detection member 300 moves to the target position, wherein the third direction is perpendicular to the first direction and the second direction respectively. The third driver 430 can be connected with the second detection member 300 by the second driver 420 and the first driver 410, and the third driver 430 can drive the second driver 420, the first driver 410 and the second detection member 300 to move along the third direction together, and then the second driver 420 drives the first driver 410 and the second detection member 300 to move along the second direction together, and finally the first driver 410 drives the second detection member 300 to move along the first direction, so that the second detection member 300 arrives at the target position. Of course, the order in which the second detection member 300 moves along the first direction, the second direction and the third direction can be flexibly selected, and the present application embodiment does not limit this. In this scheme, the first driving member 410, the second driving member 420 and the third driving member 430 are used to drive the second detection member 300 to move in different directions respectively, so that the second detection member 300 can move in three-dimensional space, so as to be close to the detected object 500 or away from the detected object 500, which is conducive to improving the detection accuracy of the second detection member 300; and the second detection member 300 can be flexibly moved to multiple areas such as the side or bottom of the stage when it is located outside the stage after resetting, so as to avoid interference with other structures; in addition, since the second detection member 300 can move in three-dimensional space, the second detection member 300 can also move to different sides of the detected object 500, thereby further expanding the detection range of the second detection member 300. Further, the driving member 400 can also include a rotating driving member (not shown in the figure) for controlling the rotation of the second detection member 300, such as by rotating the driving member 400, the relative angle between the driving member 400 and the detected object 500 can be changed, or the detection surface on the detected object 500 opposite to the second detection member 300 can be changed. The connection relationship between the rotating driving member and other driving members for driving the second detecting member 300 to move in different directions is not specifically limited in the embodiment of the present application, and an available connection method can be reasonably adopted according to the motion drive requirements of the second detecting member 300.

[0033] Based on the above content, it can be known that the first driving member 410, the second driving member 420 and the third driving member 430 can all realize linear drive; in other embodiments, the driving member 400 can also include a rotational driving member. For example, the rotational driving member can be connected to any one of the first driving member 410, the second driving member 420 and the third driving member 430 or between any two of them to drive the second detection member 300 to rotate, thereby further improving the movement flexibility of the second detection member 300.

[0034] Optionally, the number of the first detection member 200 can be one. When the first detection member 200 is fixedly arranged, the first detection member 200 can only detect the rays passing through a certain side of the detected object 500; when the first detection member 200 is movably arranged, but the detected object 500 needs to detect different sides, the first detection member 200 needs to detect in sequence, which will result in a long detection time. Based on this, in another optional embodiment, the number of the first detection member 200 is at least two, and each first detection member 200 can be located on a different side of the detected object 500, that is, each first detection member 200 faces a different detected side of the detected object 500, and detects from different directions of the detected object 500. At this time, each first detection member 200 can simultaneously detect the rays passing through different sides of the detected object 500, thereby obtaining images of the detected object 500 at different viewing angles, so as to expand the detection range, and then more comprehensively detect the detected object 500, and can shorten the detection time. Of course, different first detection members 200 can also work in different time periods.

[0035] Optionally, the number of the second detection member 300 can be one. In this case, when the number of local areas that need secondary imaging is large, the second detection members 300 need to be detected in sequence, which will result in a long detection time. Based on this, in another optional embodiment, the number of the second detection members 300 is at least two, and the driving member 400 and the second detection member 300 are arranged in a one-to-one correspondence. Each second detection member 300 can be located on a different side of the object 500 to be detected, that is, each second detection member 300 can be respectively facing a different detected surface of the object 500 to be detected. At this time, each second detection member 300 can be detected at the same time, which is conducive to shortening the detection time. In other embodiments, each second detection member 300 is located on the same side of the detected object 500, and each second detection member 300 is arranged at intervals. When the detected object 500 only needs to detect a certain side, each second detection member 300 is located on the same side of the detected object 500, and detection is performed simultaneously, which is conducive to shortening the detection time; when the detected object 500 needs to detect at least two sides, at least two second detection members 300 can be set simultaneously on different sides of the detected object 500 to further shorten the detection time. In addition, the driving member 400 is arranged in a one-to-one correspondence with the second detection member 300 to facilitate the individual control of each second detection member 300. Of course, different second detection members 300 can also work in different time periods.

[0036] Optionally, the emitting element 100 can be used to emit gamma rays; or, the emitting element 100 is used to emit X-rays. X-rays have strong penetrability and can make fluorescent materials emit light, photosensitive emulsions sensitive to light, and gases ionize. X-rays are mainly used for medical diagnosis and can also be used for industrial flaw detection. Optionally, when the emitting element 100 emits X-rays, the first detection element 200 and the second detection element 300 are both detection elements for detecting X-rays, thereby improving the accuracy of detection.

[0037] Optionally, the transmitter 100 may be a ray tube; or, the transmitter 100 may be a high voltage generator, which has the characteristics of large output power and small size, and has reliable overvoltage, overcurrent and zero-position closing protection functions.

[0038] In another optional embodiment, the first detection member 200 may be located on the side of the detected object 500 away from the emitting member 100, that is, the first detection member 200 and the emitting member 100 are respectively located on opposite sides of the detected object 500, and both the first detection member 200 and the emitting member 100 face the detected object 500. When the rays emitted by the emitting member 100 pass through the detected object 500, the detection efficiency of the first detection member 200 is relatively high. Of course, the first detection member 200 and the emitting member 100 may also be located on adjacent sides of the detected object 500. In this case, the first detection member 200 can only detect part of the rays that pass through the detected object 500. Therefore, the detection efficiency of the first detection member 200 in this arrangement is not as high as the detection efficiency when the first detection member 200 is located on the side of the detected object 500 away from the emitting member 100.

[0039] Optionally, the second detection member 300 may be located between the detected object 500 and the first detection member 200. In this case, there is no other structure blocking the second detection member 300 and the detected object 500, and the second detection member 300 is close to the surface of the detected object 500, which is conducive to improving the detection efficiency of the second detection member 300, thereby improving the quality of secondary imaging. In other embodiments, the second detection member 300 may be located on the side of the first detection member 200 away from the detected object 500. In this case, the second detection member 300 has a larger movement space, which facilitates the second detection member 300 to quickly move to the target position.

[0040] In an optional embodiment, the imaging system further includes a control device 600, which is electrically connected to the emitting element 100, the first detecting element 200, the second detecting element 300 and the driving element 400, respectively. That is, the operating states of the emitting element 100, the first detecting element 200, the second detecting element 300 and the driving element 400 can be centrally controlled by the control device 600, which is conducive to centralized control by the operator and convenient for operation. Of course, at least one of the emitting element 100, the first detecting element 200, the second detecting element 300 and the driving element 400 can be controlled separately to facilitate the arrangement of the connection lines.

[0041] Based on the imaging system disclosed in the embodiment of the present application, the embodiment of the present application further provides a flat panel detector, comprising a device body and the imaging system described in any of the above embodiments, wherein the imaging system is arranged on the device body.

[0042] Optionally, the number of flat panel detectors may be at least two, including a first flat panel detector and a second flat panel detector, the first flat panel detector may only include the first detection element 200 in the imaging system, and the second flat panel detector may include the second detection element 300 in the imaging system, that is, the first detection element 200 and the second detection element 300 in the imaging system may be arranged in different flat panel detectors to facilitate the control of the first detection element 200 and the second detection element 300. Of course, a solution in which each flat panel detector includes the first detection element and the second detection element may also be adopted.

[0043] refer to Figure 2 Based on the imaging system disclosed in the embodiment of the present application, the embodiment of the present application further provides a control method of the imaging system, which is applied to the imaging system described in any of the above embodiments, and the control method includes:

[0044] S100 , controlling the emitting element 100 to emit rays toward the detected object 500 .

[0045] Optionally, before the detected object 500 is placed on the stage 700, the orthographic projection of the transmitter 100 may be located outside the orthographic projection of the stage 700, so as to facilitate the placement of the detected object 500; when the detected object 500 is placed on the stage 700, the transmitter 100 may be moved to the top of the detected object 500 by the first driving mechanism, at which time the orthographic projection of the transmitter 100 may be located within the orthographic projection of the detected object 500, and the rays emitted by the transmitter 100 may cover the detected object 500. Of course, the first driving mechanism may also drive the transmitter 100 to move to the side of the detected object 500.

[0046] S200 , detecting a first ray passing through the detected object 500 by the first detecting element 200 to form a first image.

[0047] Optionally, before the object 500 to be detected is placed on the stage 700, the orthographic projection of the first detection member 200 may be located outside the orthographic projection of the stage 700; when the object 500 to be detected is placed on the stage 700, the first detection member 200 may be moved to the bottom or side of the stage 700 by the second driving mechanism according to the detection requirements. It should be noted that the rays emitted by the emitting member 100 can not only pass through the object 500 to be detected, but also pass through the stage 700. Therefore, when the first detection member 200 is located below the stage 700, the stage 700 does not affect the detection effect of the first detection member 200.

[0048] S300: Determine whether secondary imaging is required according to the first image.

[0049] The secondary imaging here specifically refers to the situation where the inspection result of the local area on the inspected object 500 cannot be determined based on the first image, for example, including but not limited to the situation where one or several local areas of the first image are not clear, and the inspected object 500 needs to be photographed and inspected again.

[0050] S400 , when secondary imaging is required, the second detecting member 300 is driven to move to a target position, and the second detecting member 300 detects a second ray passing through the detected object 500 to form a second image.

[0051] It should be noted that when secondary imaging is required, the area of ​​the detected object 500 that needs to be photographed and inspected again can be obtained based on the first image, and the position of the second detection member 300 when obtaining the image of the area is the target position described herein. Optionally, when secondary imaging is not required, the first image can be directly output, and the detected object 500 can be moved out of the stage 700.

[0052] In the embodiment of the present application, when the detection image based on the first detection member 200 can already meet the detection requirements of the detected object 500, such as but not limited to the situation that the detection imaging quality requirements are low, only the first detection member 200 can be used for shooting and detection; when the detection image based on the first detection member 200 cannot meet the detection requirements of the detected object 500, such as but not limited to the situation that the detection imaging quality requirements are high, after the first detection member 200 is shot, the driving member 400 drives the second detection member 300 to move to the target position, and the second detection member 300 performs shooting and detection on the part of the detected object 500, thereby forming a clear image with a large size and good imaging effect, and further confirming the detection result. It can be seen from this that the present application simultaneously sets the first detection member 200 and the second detection member 300 with different detection areas, so as to make flexible selections according to actual detection needs, and on the basis of satisfying the large shooting area and good imaging effect at one time, the cost of the imaging system is reduced, and the accuracy of the detection result can be guaranteed. Therefore, the implementation of the present application can solve the problem that the current imaging system cannot take into account low cost, large shooting area and good imaging effect at one time.

[0053] In an optional embodiment, driving the second detection member 300 to move to the target position in step S400 specifically includes:

[0054] S410: Obtain the image position of the area requiring secondary imaging in the first image.

[0055] The image position here may be a local area in the first image where the detection result cannot be determined at one time, for example, the position in the first image of a local area where the clarity does not meet the requirements. Of course, the factors that make it impossible to determine the detection result of the local area in the first image may include other factors in addition to image quality factors such as imaging clarity not meeting the requirements.

[0056] S420 , determining the actual position of the area of ​​the detected object 500 that requires secondary imaging according to the position in the image, so as to determine the target position.

[0057] Among them, the actual position of the area requiring secondary imaging on the detected object 500 can be deduced and determined based on the image position in the first image through calculation principles such as coordinate transformation or position mapping, and then the target position at which the second detection component 300 can be located when performing image acquisition on the actual position can be further determined based on the actual position, as well as image acquisition parameters of the second detection component 300 (such as acquisition viewing angle, etc.) and position requirements during image acquisition.

[0058] S430 , driving the second detecting member 300 to move from the initial position to the target position.

[0059] In this solution, after the position in the first image that requires secondary imaging is determined, the processor of the imaging system calculates and proportionally corresponds the position in the image to the actual position of the object to be detected 500, thereby determining the target position that the second detection member 300 needs to reach, and then the driving member 400 drives the second detection member 300 to move from the initial position to the target position according to the target position.

[0060] Further optionally, the image captured by the second detection member 300 can be compared with the first image to determine whether the second detection member 300 has accurately moved to the target position. Specifically, the control method further includes:

[0061] S500: Compare the second image with the first image at the corresponding position in the image to determine whether the second detection element moves to the target position.

[0062] That is, whether the second detection member 300 moves accurately to the target position can be determined by determining whether the corresponding parts in the second image and the first image are images of the same area of ​​the detected object 500 .

[0063] In an optional embodiment, before step S100, the control method further includes:

[0064] S600 , controlling the second detection member 300 to move outside the orthographic projection of the stage 700 , so that the second detection member 300 is located at an initial position.

[0065] This solution is mainly aimed at the situation that the second detection member 300 moves due to human factors before the imaging system works. Therefore, through this step, the second detection member 300 is controlled to move outside the orthographic projection of the stage 700, so as to reset the second detection member 300 so that the second detection member 300 is located at the initial position, so that the processor can accurately calculate the distance from the second detection member 300 to the target position, thereby improving the movement accuracy of the second detection member 300. In addition, when the first detection member 200 is detecting, the second detection member 300 is located outside the orthographic projection of the stage 700, which can prevent the second detection member 300 from affecting the detection effect of the first detection member 200, thereby improving the detection quality of the first detection member 200.

[0066] Optionally, before step S600, the control method further includes:

[0067] S700: Perform self-test on the imaging system.

[0068] The self-test here specifically includes self-testing the performance of structures such as the emitting element 100, the first detecting element 200 and the second detecting element 300 to ensure that they can work normally, thereby improving the working efficiency of the imaging system.

[0069] Optionally, after step S400, the control method further includes:

[0070] S800 , controlling the second detection element 300 to reset.

[0071] After the second detection member 300 completes the detection, the solution controls the second detection member 300 to reset so that the second detection member 300 is located at the initial position. At this time, the second detection member 300 moves out of the positive projection of the stage 700, which can prevent the second detection member 300 from facing the transmitting member 100 for a long time, causing the second detection member 300 to be damaged.

[0072] It should be noted that the imaging system disclosed in the present application can have various product forms. In practical applications, the initial position of the second detection member 300 can be determined according to different product forms. As long as the second detection member 300 is located outside the orthographic projection of the stage 700 at the initial position, the embodiment of the present application does not impose any specific restrictions on the initial position of the second detection member 300.

[0073] In another optional embodiment, step S400 specifically includes:

[0074] S440, when secondary imaging is required, detecting the number of local areas in the first image that require secondary imaging;

[0075] S450, driving the second detection member 300 to move to a target position, and detecting the second ray passing through the detected object 500 through the second detection member 300 to form a second image;

[0076] S460. Mark the target position in step S420 to ensure that step S420 is not repeated at the same target position.

[0077] In this solution, when there are multiple local areas in the first image that need to be imaged for the second time, each time a local area is detected, the target position where the second detection element 300 is located during detection can be marked, thereby avoiding repeated detection and improving the detection efficiency of the second detection element 300.

[0078] Further, the number of target positions may be at least two, including a first target position and a second target position, the second ray may include a first local ray and a second local ray, the number of second images may be at least two, including a first sub-image and a second sub-image, and step S400 specifically includes:

[0079] S470, driving the second detection member 300 to move to the first target position, and detecting the first local ray passing through the detected object 500 through the second detection member 300 to form a first sub-image;

[0080] S480 , driving the second detection member 300 to move to a second target position, and detecting a second partial ray passing through the detected object 500 through the second detection member 300 to form a second sub-image.

[0081] The first target position and the second target position are located in different areas of the detected object 500, the first local ray and the second local ray are emitted from different areas of the detected object 500, and the first sub-image and the second sub-image are images at different areas of the detected object 500.

[0082] In another optional embodiment, driving the second detection member 300 to move to the target position in step S400 specifically includes:

[0083] S490, driving the second detecting member 300 to move along at least one of the first direction, the second direction and the third direction, so that the second detecting member 300 moves to the target position, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0084] In this solution, the second detection member 300 can move only along one of the first direction, the second direction and the third direction. In this case, the detection area of ​​the second detection member 300 is smaller; the second detection member 300 can also move along two of the first direction, the second direction and the third direction. In this case, the second detection member 300 can move in a certain plane, and the detection range of the second detection member 300 is larger; the second detection member 300 can also move along the first direction, the second direction and the third direction respectively, so that the second detection member 300 can move in three-dimensional space. In this case, the detection range of the second detection member 300 can be larger.

[0085] Optionally, when the second detection member 300 moves along at least two of the first direction, the second direction and the third direction, the number of driving members 400 driving the second detection member 300 to move can be at least two, so that different driving members 400 control the second detection member 300 to move in different directions.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An imaging system, characterized in that: The invention comprises a transmitting element (100), a first detecting element (200), a second detecting element (300) and a driving element (400); the transmitting element (100), the first detecting element (200) and the second detecting element (300) can all face the detected object (500); the transmitting element (100) is used for emitting rays; the driving element (400) is connected to the second detecting element (300); the driving element (400) can drive the second detecting element (300) to move to a target position; and the detection area of ​​the second detecting element (300) is smaller than the detection area of ​​the first detecting element (200).

2. The imaging system according to claim 1, characterized in that The number of the driving members (400) is at least two, and the driving members (400) include a first driving member (410) and a second driving member (420). The first driving member (410) and the second driving member (420) are both connected to the second detecting member (300). The first driving member (410) can drive the second detecting member (300) to move along a first direction, and the second driving member (420) can drive the second detecting member (300) to move along a second direction, so that the second detecting member (300) moves to the target position. wherein the first direction is perpendicular to the second direction; and / or The driving member (400) comprises a rotating driving member, and the rotating driving member is used to drive the second detecting member (300) to rotate relative to the detected object (500).

3. The imaging system according to claim 2, characterized in that The driving member (400) further comprises a third driving member (430), wherein the third driving member (430) is connected to the second detecting member (300), and the third driving member (430) can drive the second detecting member (300) to move along a third direction so that the second detecting member (300) moves to the target position. Wherein, the third direction is perpendicular to the first direction and the second direction respectively.

4. The imaging system according to claim 1, characterized in that The number of the first detection members (200) is at least two, and each of the first detection members (200) can be located on a different side of the detected object (500).

5. The imaging system according to claim 1, characterized in that The number of the second detection members (300) is at least two, the driving members (400) are arranged in one-to-one correspondence with the second detection members (300), and each of the second detection members (300) can be located on a different side of the detected object (500); or, Each of the second detection components (300) is located on the same side of the detected object (500), and each of the second detection components (300) is arranged at intervals.

6. The imaging system according to claim 1, characterized in that: The emitting element (100) is used to emit X-rays; The transmitting element (100) is a high voltage generator.

7. The imaging system according to claim 1, characterized in that: The first detecting member (200) may be located on a side of the detected object (500) facing away from the emitting member (100), the second detecting member (300) may be located between the detected object (500) and the first detecting member (200), or the second detecting member (300) may be located on a side of the first detecting member (200) facing away from the detected object (500).

8. The imaging system according to claim 1, characterized in that: The imaging system further comprises a control device (600), wherein the control device (600) is electrically connected to the emitting element (100), the first detecting element (200), the second detecting element (300) and the driving element (400) respectively.

9. A flat panel detector, characterized in that: The invention comprises an apparatus body and the imaging system according to any one of claims 1 to 8, wherein the imaging system is arranged in the apparatus body.

10. A control method for an imaging system, applied to the imaging system according to any one of claims 1 to 8, characterized in that: include: Controlling the emitting element to emit rays toward the detected object; Detecting a first ray passing through the detected object by the first detecting element to form a first image; Determining whether secondary imaging is required according to the first image; When secondary imaging is required, the second detecting member is driven to move to a target position, and the second ray passing through the detected object is detected by the second detecting member to form a second image.

11. The control method according to claim 10, characterized in that: The driving the second detection member to move to the target position specifically includes: Acquire the image position of the area requiring secondary imaging in the first image; Determine the actual position of the area of ​​the detected object that requires secondary imaging according to the position in the image, so as to determine the target position; The second detecting member is driven to move from an initial position to the target position.

12. The control method according to claim 11, characterized in that: The control method further comprises: The second image is compared with the first image at a portion corresponding to the position in the image to determine whether the second detection member has moved to the target position.

13. The control method according to claim 10, characterized in that: Before controlling the emitting element to emit rays toward the detected object, the control method further includes: The second detection member is controlled to move outside the orthographic projection of the stage so that the second detection member is located at an initial position.

Images