Curved surface detector

Abstract

The utility model discloses a curved surface detector, and relates to the technical field of ray detection. The curved surface detector comprises a structural frame, a curvature adjusting assembly, a circuit board assembly and a flexible sensor assembly, wherein one side of the structural frame is open; the curvature adjusting assembly is composed of a plurality of sections of hinge units and connected to the open side of the structural frame. The circuit board assembly is fixedly arranged in the structural frame; the flexible sensor assembly is attached to the surface of the curvature adjusting assembly, and the flexible sensor assembly is electrically connected with the circuit board assembly. Wherein the curvature adjusting assembly changes the curvature through relative rotation between the hinge units, so that the flexible sensor assembly forms a curved surface configuration adaptive to a detection object. When a user uses the device, the curvature of the curvature adjusting assembly is adjusted according to the diameter of a detected object, and the detection requirements of different detected objects can be met. And the curvature adjusting assembly is simple in structure and convenient to assemble, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ray detection, especially relates to a curved surface detector. BACKGROUND

[0002] The curved surface detector can be applied to X-ray detection in the fields of pipeline nondestructive testing, three-dimensional security check machines, industrial online CT, medical head CT and orthopedic CT. Compared with a flat panel detector, the curved surface detector can improve the highlighted distortion linearity, make the image more uniform and more clear and accurate.

[0003] At present, the curved surface detector is provided with a flexible sensor, the flexible sensor is fixed on a curved surface support plate, although the design of the curved surface structure can be realized, the curvature of the curved surface structure is fixed, and the curved surface detector can only be applied to three-dimensional imaging, such as head CT, orthopedic CT and industrial online CT with fixed curvature, and cannot meet the requirement of fitting different diameter pipeline detection in pipeline nondestructive testing. The structure of the existing curved surface detector capable of adjusting the curvature is complex, the production and assembly are difficult, and the cost is high. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a curved surface detector to realize wide applicability of the curved surface detector, simple structure, easy production and assembly and cost reduction.

[0005] To achieve the purpose, the utility model adopts the following technical scheme:

[0006] The curved surface detector comprises:

[0007] A structure frame is provided with an open side;

[0008] A curvature adjusting assembly is composed of multiple hinged units and connected to the open side of the structure frame;

[0009] A circuit board assembly is fixedly arranged in the structure frame;

[0010] A flexible sensor assembly is attached to the surface of the curvature adjusting assembly, and the flexible sensor assembly is electrically connected to the circuit board assembly;

[0011] The curvature adjusting assembly changes the curvature by relative rotation between the hinged units, so that the flexible sensor assembly forms a curved surface configuration suitable for the detection object.

[0012] As an optional scheme of the curved surface detector, the hinged unit comprises a support cross bar and a damping rotating shaft, the support cross bar extends in a direction parallel to the open side, and the damping rotating shaft is fixed with a connecting plate on both sides;

[0013] The adjacent hinge units are detachably connected through the connecting plates, so that the support cross bars can rotate relative to each other through the damping pivots.

[0014] As an optional solution of the curved detector, through grooves are oppositely arranged on two sides of the support cross bar, and the damping pivots are arranged in the through grooves. The connecting plates on two sides of the damping pivots are staggered along the axial direction of the connecting plates.

[0015] The connecting plates on the side where the two damping pivots are close to each other are connected with the bottom groove of the support cross bar.

[0016] As an optional solution of the curved detector, a connecting groove is arranged on the open side, and the connecting plate of the hinge unit close to the structural frame is fixed in the connecting groove.

[0017] As an optional solution of the curved detector, the hinge unit further comprises a U-shaped positioning member arranged at two ends of the support cross bar. The U-shaped positioning member comprises a first side wall connected with the bottom of the support cross bar and a second side wall arranged in parallel and spaced apart from the top surface of the support cross bar, so that two open opposite limiting grooves are formed on the curvature adjusting assembly, and the opposite sides of the flexible sensor assembly are embedded in the limiting grooves.

[0018] As an optional solution of the curved detector, the curvature adjusting assembly further comprises a side protection sleeve connected to the outside of the U-shaped positioning member.

[0019] And / or, the curvature adjusting assembly further comprises an end protection sleeve, and the connecting plate of the hinge unit away from the structural frame is connected with the end protection sleeve.

[0020] As an optional solution of the curved detector, the circuit board assembly comprises a signal processing circuit board and a curvature acquisition circuit board. A flexible curvature sensor is arranged on the curvature adjusting assembly, the flexible curvature sensor is electrically connected with the curvature acquisition circuit board, and the curvature acquisition circuit board is configured to convert the deformation signal of the flexible curvature sensor into digital code and transmit to the signal processing circuit board.

[0021] As an optional solution of the curved detector, the flexible sensor assembly comprises a flexible radiographic imaging sensor, an upper surface film, a lower surface film and an edge gasket. The flexible radiographic imaging sensor is arranged between the upper surface film and the lower surface film, and the edge gasket is circumferentially arranged around the upper surface film and the lower surface film.

[0022] As an optional solution of the curved detector, the edge gasket is a double-sided foam tape or a silica gel pad.

[0023] As an optional solution of the curved detector, the flexible sensor assembly further comprises an anti-back scattering film, which is pasted below the lower surface film, for preventing ray scattering.

[0024] The curved detector has the advantages that:

[0025] The curved detector comprises a structure frame and a curvature adjusting assembly, one side of the structure frame is provided as an opening, the curvature adjusting assembly is connected to the opening side of the structure frame, a circuit board assembly is fixedly arranged in the interior of the structure frame, a flexible sensor assembly is attached to the surface of the curvature adjusting assembly and electrically connected with the circuit board assembly. The curvature adjusting assembly is composed of multiple hinged units, the hinged units are relatively rotated to change the curvature, and the flexible sensor assembly can form a curved configuration suitable for the detection object. When used, the curvature adjusting assembly can be adjusted according to the diameter of the detection object, so that the detection requirement of different detection objects can be met. The curvature adjusting assembly has a simple structure, is convenient to assemble and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the curved detector provided by the utility model embodiment;

[0027] Figure 2 is an exploded view of the curved detector provided by the utility model embodiment;

[0028] Figure 3 is an exploded schematic view of the hinged unit provided by the utility model embodiment;

[0029] Figure 4 is a structure schematic view of the hinged unit provided by the utility model embodiment;

[0030] Figure 5 is a structure schematic view of the curvature adjusting assembly provided by the utility model embodiment;

[0031] Figure 6 is a structure schematic view of the structure frame provided by the utility model embodiment;

[0032] Figure 7 is a structure schematic view of the structure frame and the curvature adjusting assembly provided by the utility model embodiment;

[0033] Figure 8 is a back surface schematic view of the structure frame and the curvature adjusting assembly provided by the utility model embodiment after assembly;

[0034] Figure 9 is a front surface schematic view of the structure frame and the curvature adjusting assembly provided by the utility model embodiment after assembly;

[0035] Figure 10 is a disassembled schematic view of the circuit board assembly provided by the embodiment of the present application;

[0036] Figure 11 is a structural schematic view of the circuit board assembly provided by the embodiment of the present application;

[0037] Figure 12 is a disassembled schematic view of the aluminum alloy middle plate and the flexible sensor assembly provided by the embodiment of the present application;

[0038] Figure 13 is an assembled schematic view of the aluminum alloy middle plate and the flexible sensor assembly provided by the embodiment of the present application;

[0039] Figure 14 is a structural schematic view of the flexible sensor assembly and the curvature adjusting assembly before assembly provided by the embodiment of the present application;

[0040] Figure 15 is a structural schematic view of the flexible sensor assembly and the curvature adjusting assembly after assembly provided by the embodiment of the present application;

[0041] Figure 16 is a docking schematic view of the back of the curved surface detector and the lower bottom plate provided by the embodiment of the present application;

[0042] Figure 17 is a docking schematic view of the front of the curved surface detector and the upper cover plate provided by the embodiment of the present application.

[0043] In the figure:

[0044] 1, structural frame; 11, structural frame; 111, connecting groove; 12, upper cover plate; 13, lower bottom plate; 14, waterproof silica gel sheet;

[0045] 2, curvature adjusting assembly; 21, hinged unit; 211, supporting horizontal rod; 2111, through groove; 212, damping rotating shaft; 2121, connecting plate; 213, U-shaped positioning piece; 2131, first side wall; 2132, second side wall; 22, side protection sleeve; 23, end protection sleeve; 24, limiting groove; 25, mounting groove;

[0046] 3, circuit board assembly; 31, signal processing circuit board; 32, curvature acquisition circuit board; 33, analog circuit board; 34, LED lamp plate; 35, aluminum alloy middle plate;

[0047] 4, flexible curvature sensor;

[0048] 5, flexible sensor assembly; 51, flexible radiographic imaging sensor; 52, upper surface film; 53, lower surface film; 54, edge gasket; 55, back scattering prevention film; 56, upper protective film; 57, lower protective film; 58, fixing gasket. DETAILED DESCRIPTION

[0049] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0050] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0051] Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; 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 of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] Unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] The technical solutions of the present application are further illustrated below by combining the drawings and through specific embodiments.

[0054] As Figures 1-10As shown, the embodiment provides a curved surface detector, which comprises a structural frame 1, a curvature adjusting assembly 2, a circuit board assembly 3 and a flexible sensor assembly 5. One side of the structural frame 1 is open, and the curvature adjusting assembly 2 is composed of multiple articulated units 21 and connected to the open side of the structural frame 1. The circuit board assembly 3 is fixedly arranged inside the structural frame 1; the flexible sensor assembly 5 is attached to the surface of the curvature adjusting assembly 2, and the flexible sensor assembly 5 is electrically connected with the circuit board assembly 3. The curvature adjusting assembly 2 changes the curvature by relative rotation between the articulated units 21, so that the flexible sensor assembly 5 forms a curved surface configuration suitable for detecting an object. When a user uses it, the curvature adjusting assembly 2 is adjusted according to the diameter of the detected object, so that the detection requirements of different detected objects can be met. Moreover, the structure of the curvature adjusting assembly 2 is simple, which is convenient for assembly and reduces the cost.

[0055] Specifically, the structural frame 1 comprises a structural frame 11 with three side walls, an upper cover plate 12 and a lower bottom plate 13. The circuit board assembly 3 is installed in the structural frame 11. The upper cover plate 12 is arranged on the top of the structural frame 11, and the lower bottom plate 13 is connected to the bottom of the structural frame 11, so as to install the circuit board assembly 3 in a closed space and protect the circuit board assembly 3. The structural frame 11, the upper cover plate 12 and the lower bottom plate 13 are all made of aluminum alloy and have a certain structural strength, which protects the circuit board assembly 3 inside. The three-side-wall structural frame 11, the upper cover plate 12 and the lower bottom plate 13 form a high-strength closed space, which effectively resists external impact and electromagnetic interference in combination with the rigidity of aluminum alloy. The closed assembly design not only ensures that the internal circuit board assembly 3 is not eroded by dust and moisture, but also accelerates the heat dissipation of the elements, prolonging the service life. The overall structure takes into account the light weight and durability.

[0056] Further, a waterproof silica gel sheet 14 is arranged between the upper cover plate 12 and the flexible sensor assembly 5. Through the composite function design of the waterproof silica gel sheet 14, double protection is formed in the dynamic bending working condition and water scene of the flexible sensor assembly 5. When the flexible sensor assembly 5 is repeatedly bent, the waterproof silica gel sheet 14 absorbs mechanical stress through elastic deformation, reduces the risk of weld fracture of the circuit board assembly 3 caused by deformation, and at the same time, its hydrophobic property forms a physical isolation barrier when encountering water, effectively preventing liquid from penetrating into the precision electronic elements. This structure not only maintains the high sensitivity response of the flexible sensor assembly 5 to external deformation, but also significantly improves the structural stability and service life of the curved surface detector in humid environment or water scene through the synergistic effect of the material mechanics characteristics and waterproof performance.

[0057] In an embodiment, as shown in Figures 3-5As shown, the hinged unit 21 comprises a support crossbar 211 extending in a direction parallel to the open side and a damping pivot 212, and the two sides of the damping pivot 212 are fixed with connecting plates 2121. Adjacent hinged units 21 are detachably connected through the connecting plates 2121, so that the support crossbars 211 can relatively rotate through the damping pivot 212. Through the modular design of the detachable hinged unit 21, the stable and flexible rotation adjustment function between the support crossbars 211 is realized. The damping pivot 212 effectively buffers the rotation impact through the damping effect, reduces the wear of the parts, and can also maintain the stability during rotation. The detachable connection mode of the hinged unit 21 not only facilitates on-site rapid assembly and later maintenance and replacement, but also expands the combination applicability of the hinged unit 21; at the same time, the directional extension layout of the support crossbar 211 ensures the convenient connection of the flexible sensor assembly 5 on the curvature adjustment assembly 2 and the circuit board assembly 3 in the structural frame 1.

[0058] Specifically, the support crossbar 211 and the damping pivot 212 are both aluminum alloy parts, which have a certain support strength. The length of the support crossbar 211 is adapted to the length of the open side of the structural frame 11, so that the width of the formed curvature adjustment assembly 2 is adapted to the width of the structural frame 11.

[0059] Of course, in other embodiments, the hinged unit 21 can also be a support crossbar 211 connected through a hinge.

[0060] In an embodiment, the two sides of the support crossbar 211 are oppositely provided with through grooves 2111, the damping pivot 212 is arranged in the through grooves 2111, and the connecting plates 2121 on the two sides of the damping pivot 212 are staggered along the axial direction. The connecting plates 2121 on the side of the two damping pivots 212 located close to each other on the opposite sides of the support crossbar 211 are connected with the bottom groove of the support crossbar 211. Through the coupling design of the through grooves 2111 and the staggered connecting plates 2121, high-precision dynamic support is realized in a limited space. The through grooves 2111 symmetrically arranged on the two sides of the support crossbar 211 are precisely matched with the diameter of the damping pivot 212, which not only eliminates the assembly gap between adjacent support crossbars 211 to improve the overall structure, but also enhances the rotation stability through the radial constraint of the groove wall on the damping pivot 212; the staggered connecting plates 2121 are embedded in the bottom groove of the support crossbar 211 in an axial offset manner, forming an asymmetric mechanical transmission path, which balances the multidirectional load while reducing the width of the support crossbar 211, so that the compact structure still has the torsion resistance; the symmetric arrangement of the two damping pivots 212 and the staggered engagement of the connecting plates 2121 form a bidirectional self-locking effect, which can inhibit the axial deviation in high-frequency rotation, and also realizes rapid disassembly and maintenance through the modular assembly interface.

[0061] To ensure the stability of the rotation of the support cross bar 211 when adjusting the curvature of the flexible sensor assembly 5, the number of damping rotation shafts 212 is set to at least three according to the length of the support cross bar 211, one at each end of the support cross bar 211 and one in the middle. Further, two connecting plates 2121 are arranged on each side of the damping rotation shaft 212, and the four connecting plates 2121 are staggered along the length direction of the damping rotation shaft 212. Three damping rotation shafts 212 are arranged on each side of each support cross bar 211. Through the composite layout design of multiple damping rotation shafts 212 and staggered connecting plates 2121, high-precision dynamic balance of the curvature adjustment of the flexible sensor assembly 5 is achieved. The at least three damping rotation shafts 212 distributed at both ends and in the middle along the length direction of the support cross bar 211 form a segmented torque distribution structure, which not only avoids rotation jamming caused by local stress concentration, but also improves the overall action stability through multi-point synchronous damping; the two groups of connecting plates 2121 staggered on each side of each damping rotation shaft 212 form a four-way constraint grid, which not only enhances the lateral rigidity but also disperses the longitudinal load and reduces the bending deformation of the support cross bar 211; in combination with the redundant support system formed by the symmetric arrangement of the three damping rotation shafts 212 on each side, the multi-directional force balance is further strengthened, and the trajectory consistency of the flexible sensor assembly 5 is ensured during repeated curvature adjustment.

[0062] Specifically, the connecting plates 2121 are fixedly connected with the support cross bar 211 by fastening screws.

[0063] In an embodiment, as shown in Figure 6 and Figure 7 , the open side of the structural frame 1 is provided with a connecting groove 111, and the connecting plate 2121 close to the hinge unit 21 of the structural frame 1 is fixed in the connecting groove 111. The curvature adjustment assembly 2 is connected with the structural frame 1 through the connecting plate 2121 of the damping rotation shaft 212 on one side of the curvature adjustment assembly 2, realizing the relative rotation between the curvature adjustment assembly 2 and the structural frame 1. In the case of ensuring the structural stability of the circuit board assembly 3, the curvature adjustment of the flexible sensor assembly 5 is realized, achieving the dynamic balance of rigid support and flexible deformation.

[0064] In an embodiment, continuing to refer to Figure 3 and Figure 5The hinged unit 21 further comprises a U-shaped positioning member 213 arranged at both ends of the support cross bar 211. The U-shaped positioning member 213 comprises a first side wall 2131 connected to the bottom of the support cross bar 211 and a second side wall 2132 arranged in parallel and spaced apart from the top surface of the support cross bar 211, so that two open and opposite limiting grooves 24 are formed on the curvature adjusting assembly 2, and the opposite sides of the flexible sensor assembly 5 are embedded in the limiting grooves 24. The U-shaped positioning member 213 in the multi-section hinged unit 21 forms the open and opposite limiting grooves 24 on the opposite sides of the curvature adjusting assembly 2, and one end of the flexible sensor assembly 5 close to the structural frame 1 is connected with the circuit board assembly 3, and the other end is inserted into the opposite limiting grooves 24 of the curvature adjusting assembly 2. In the process of adjusting the curvature of the curvature adjusting assembly 2, the flexible sensor assembly 5 is limited by the limiting grooves 24 on both sides and is always attached to the surface of the curvature adjusting assembly 2, so as to ensure that the flexible sensor assembly 5 forms a curved surface configuration suitable for detecting the object.

[0065] In an embodiment, as shown in Figure 2 and Figure 8 The curvature adjusting assembly 2 further comprises a side protective sleeve 22 connected to the outer side of the U-shaped positioning member 213, and / or the curvature adjusting assembly 2 further comprises an end protective sleeve 23 connected to the connecting plate 2121 of the hinged unit 21 away from the structural frame 1. The side protective sleeve 22 and the end protective sleeve 23 are both made of rubber and are used for protecting the curvature adjusting assembly 2.

[0066] In an embodiment, as shown in Figures 9-11 The circuit board assembly 3 comprises a signal processing circuit board 31 and a curvature acquisition circuit board 32. The curvature adjusting assembly 2 is provided with a flexible curvature sensor 4, the flexible curvature sensor 4 is electrically connected with the curvature acquisition circuit board 32, and the curvature acquisition circuit board 32 is configured to convert the deformation signal of the flexible curvature sensor 4 into digital code and transmit to the signal processing circuit board 31. By arranging the flexible curvature sensor 4 on the curvature adjusting assembly 2, the curvature of the flexible sensor assembly 5 changes with the curvature of the curvature adjusting assembly 2. The deformation of the curvature adjusting assembly 2 detected by the flexible curvature sensor 4 is the deformation of the flexible sensor assembly 5. The curvature acquisition circuit board 32 receives the deformation signal of the flexible curvature sensor 4 and converts it into digital code, which is then transmitted to the signal processing circuit board 31. The signal processing circuit board 31 obtains the curvature of the flexible sensor assembly 5 and transmits it to the terminal (computer or mobile phone) through a high-speed interface. The transmission mode can be wired network, wireless network, USB or other high-speed interface. The user obtains the bending curvature from the terminal, which is convenient for the user to debug and adjust the algorithm for subsequent image post-processing.

[0067] Specifically, the middle of the bottom of the curvature adjustment assembly 2 is provided with a mounting groove 25, the flexible curvature sensor 4 is pasted at the middle position of the mounting groove 25, and the curvature acquisition circuit board 32 is provided as a strip-shaped plate matched with the mounting groove 25, the strip-shaped plate is arranged in the mounting groove 25 and extends to be connected with the flexible curvature sensor 4.

[0068] The circuit board assembly 3 further comprises an analog circuit board 33, which is electrically connected with the flexible sensor assembly 5 and used to acquire the digital signal output by the flexible sensor assembly 5. After acquiring the data of the analog circuit board 33, the signal processing circuit board 31 transmits the data to a terminal (computer or mobile phone) through a high-speed interface, and the transmission mode can be wired network, wireless network, USB or other high-speed interfaces.

[0069] Specifically, the circuit board assembly 3 further comprises an LED light plate 34 and an aluminum alloy middle plate 35, the signal processing circuit board 31, the analog circuit board 33 and the curvature acquisition circuit board 32 are all mounted on the aluminum alloy middle plate 35, and the LED light plate 34 is electrically connected with the signal processing circuit board 31 and used to indicate the working state of the curved surface detector.

[0070] Further, the analog circuit board 33 and the signal processing circuit board 31 are respectively mounted on the opposite edges of the upper and lower sides of the aluminum alloy middle plate 35, so that the space is saved. The aluminum alloy middle plate 35 is provided with a mounting hole for connecting with the flexible sensor assembly 5.

[0071] In an embodiment, as shown in Figure 12 and Figure 13 The flexible sensor assembly 5 comprises a flexible radiographic imaging sensor 51, an upper surface film 52, a lower surface film 53 and an edge gasket 54, the flexible radiographic imaging sensor 51 is arranged between the upper surface film 52 and the lower surface film 53, and the edge gasket 54 is arranged around the periphery of the upper surface film 52 and the lower surface film 53. The flexible radiographic imaging sensor 51 is a flexible TFT (Thin Film Transistor) sensor, which is used to convert X-rays into digital signals and can be bent. The upper surface film 52 and the lower surface film 53 are tightly attached to and protect the upper and lower surfaces of the flexible radiographic imaging sensor 51, and are bendable. The edge gasket 54 is used to support the upper surface film 52 and the lower surface film 53, leave a gap for arranging the flexible radiographic imaging sensor 51, and has a good waterproof effect.

[0072] Specifically, the upper surface film 52 and the lower surface film 53 can be made of Pet (Polyethylene terephthalate) material, resin material, polymer material or other bendable materials.

[0073] In an embodiment, the edge gasket 54 is a foam double-sided tape or a silicon gasket. The edge gasket 54 can be a foam double-sided tape, a silicon gasket, a silicon-based glue, or other soft fillers.

[0074] The edge gasket 54 is attached to the edge of the lower surface film 53, and the edge gasket 54 is attached with a thin double-sided tape inside, which attaches the flexible radiographic sensor 51 to the lower surface film 53. If the edge gasket 54 is a double-sided tape, the upper surface film 52 is directly attached to the lower surface film 53 through the double-sided tape; if the edge gasket 54 is a soft filler, the upper surface film 52 and the lower surface film 53 can be sewn together using a sewing thread, or filled and fixed using a silicon-based glue.

[0075] In an embodiment, the flexible sensor assembly 5 further comprises a backscatter prevention film 55 attached below the lower surface film 53 for preventing X-ray scattering. The backscatter prevention film 55 can be a lead sheet, a lead rubber, or a heavy metal alloy rubber film for preventing X-ray scattering.

[0076] Further, the flexible sensor assembly 5 further comprises an upper protective film 56 and a lower protective film 57. The upper protective film 56 is arranged above the upper surface film 52 by means of adhesion or the like, for protecting the front surface of the flexible radiographic sensor 51; the lower protective film 57 is arranged below the backscatter prevention film 55 by means of adhesion or the like, for protecting the back surface of the flexible radiographic sensor 51.

[0077] Specifically, the upper protective film 56 and the lower protective film 57 can be made of materials such as Pet, resin, polymer, carbon cloth, and the like, which are bendable and have a low X-ray absorption rate.

[0078] Further, the edges of the upper surface film 52, the lower surface film 53, the upper protective film 56, and the lower protective film 57 are provided with positioning and mounting hole positions, which, with the assistance of a special assembly jig, ensure high installation precision and simple, efficient installation.

[0079] The flexible sensor assembly 5 is mounted and fixed with the circuit board assembly 3 through the fixing gasket 58.

[0080] The curved detector provided in the embodiment can realize both variable curvature and fixed curvature, to adapt to X-ray detection in different fields, i.e., it can be both a curved detector with fixed curvature to meet the needs of head CT, orthopedic CT, industrial online CT, and the like, and a curved detector with variable curvature to meet the needs of pipe nondestructive testing when adhering to pipes with different diameters.

[0081] The curved detector with fixed curvature uses the structural framework 1, the flexible sensor assembly 5, and the circuit board assembly 3 provided in the embodiment, and customizes a curved structure with fixed curvature according to user needs. The assembly steps for the curved detector with fixed curvature are as follows:

[0082] (1) Flexible sensor assembly 5 assembly: Paste the backscatter protection film 55 under the lower surface film 53, paste the edge gasket 54 at the edge of the lower surface film 53, and paste the thin double-sided adhesive between the edge gasket 54 and the flexible radiographic sensor 51. If the edge gasket 54 is a foam double-sided adhesive, the upper surface film 52 is directly pasted on the lower surface film 53 through the foam double-sided adhesive. If the edge gasket 54 is a soft filler, the upper surface film 52 and the lower surface film 53 can be sewn together using sewing thread or the like, or fixed and filled with silicone-based glue.

[0083] (2) Circuit board assembly 3 assembly: Install the analog circuit board 33, the signal processing circuit board 31, and the LED light board 34 on the corresponding positions of the aluminum alloy middle plate 35, respectively.

[0084] (3) Install the assembled flexible sensor assembly 5 on the fixed curvature surface structure by pasting or positioning and installing the hole position.

[0085] (4) Finally, paste the upper protective film 56 on the upper surface film 52 through the thin double-sided adhesive.

[0086] As shown in Figures 10-17 , the assembly steps of the variable curvature surface detector are as follows:

[0087] (1) Flexible sensor assembly 5 assembly: Paste the backscatter protection film 55 under the lower surface film 53, paste the edge gasket 54 at the edge of the lower surface film 53, and paste the thin double-sided adhesive between the edge gasket 54 and the flexible radiographic sensor 51. If the edge gasket 54 is a foam double-sided adhesive, the upper surface film 52 is directly pasted on the lower surface film 53 through the foam double-sided adhesive. If the edge gasket 54 is a soft filler, the upper surface film 52 and the lower surface film 53 can be sewn together using sewing thread or the like, or fixed and filled with silicone-based glue.

[0088] (2) Circuit board assembly 3 assembly: Install the analog circuit board 33, the signal processing circuit board 31, and the LED light board 34 on the corresponding positions of the aluminum alloy middle plate 35, respectively.

[0089] (3) Install the assembled flexible sensor assembly 5 on the corresponding position of the aluminum alloy middle plate 35, and fix and connect the screw sleeve with the aluminum alloy middle plate 35 through the fixing washer 58, so as to assemble the flexible sensor assembly 5 and the circuit board assembly 3 into one.

[0090] (4) The upper protective film 56 is pasted to the upper surface film 52 by thin double-sided adhesive, or is fixed on the aluminum alloy middle plate 35 through the positioning installation hole of the edge of the upper protective film 56. The back scattering prevention film 55 is pasted to the lower surface film 53 by thin double-sided adhesive, and then the lower protective film 57 is pasted to the lower surface film 53 by thin double-sided adhesive, or is fixed on the aluminum alloy middle plate 35 through the positioning installation hole of the edge of the lower protective film 57.

[0091] (5) Assembling the curvature adjustment assembly 2: the damping rotating shaft 212 is installed on both sides of the supporting horizontal rod 211, the U-shaped positioning member 213 is installed on both ends of the supporting horizontal rod 211, and then the multi-section hinged unit 21 is assembled in sequence, and the multi-section hinged unit 21 is connected to form the curvature adjustment assembly 2.

[0092] (6) The flexible curvature sensor 4 is pasted on the middle position of the installation groove 25 on the curvature adjustment assembly 2 by elastic double-sided adhesive, and then the strip-shaped curvature acquisition circuit board 32 is arranged in the installation groove 25 and connected with the flexible curvature sensor 4.

[0093] (7) The flexible sensor assembly 5 is inserted into the two limiting grooves 24 on the curvature adjustment assembly 2, the aluminum alloy middle plate 35 of the circuit board assembly 3 is installed in the structural frame 11, and the curvature adjustment assembly 2 and the structural frame 11 are fixed together; then the upper cover plate 12 is arranged on the top of the structural frame 11, and the lower bottom plate 13 is installed on the bottom of the structural frame 11; finally, the side protective sleeve 22 is installed on both sides of the curvature adjustment assembly 2, and the end protective sleeve 23 is installed on the end of the curvature adjustment assembly 2 away from the structural frame 11, that is, the installation is completed.

[0094] The above is only the preferred embodiment of the present application, and for the ordinary skilled in the art, according to the idea of the present application, the specific implementation mode and application range can be changed, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A curved detector, characterized in that, The application relates to a structure frame (1) with an open side, a curvature adjusting assembly (2) composed of multiple hinged units (21) and connected to the open side of the structure frame (1), a circuit board assembly (3) fixedly arranged in the structure frame (1), and a flexible sensor assembly (5) attached to the surface of the curvature adjusting assembly (2) and electrically connected to the circuit board assembly (3). The hinged units (21) comprise support crossbars (211) extending along the direction parallel to the open side and damping rotating shafts (212) with connecting plates (2121) fixed to the two sides of the damping rotating shafts (212). The adjacent hinged units (21) are detachably connected through the connecting plates (2121) so that the support crossbars (211) can relatively rotate through the damping rotating shafts (212). The two damping rotating shafts (212) on the opposite sides of the support crossbar (211) are arranged in the through grooves (2111) and the connecting plates (2121) on the two sides of the damping rotating shafts (212) are staggered along the axial direction. The connecting plates (2121) on the side close to each other of the two damping rotating shafts (212) on the opposite sides of the support crossbar (211) are connected to the bottom groove of the support crossbar (211). The open side is provided with a connecting groove (111) and the connecting plates (2121) on the hinged units close to the structure frame (1) are fixed in the connecting groove (111).

2. The curved detector of claim 1, wherein, The hinged units (21) further comprise U-shaped positioning members (213) arranged at the two ends of the support crossbar (211), the U-shaped positioning members (213) comprise first side walls (2131) connected to the bottom of the support crossbar (211) and second side walls (2132) arranged in parallel and spaced apart from the top surface of the support crossbar (211) so that two open opposite limiting grooves (24) are formed on the curvature adjusting assembly (2) and the opposite sides of the flexible sensor assembly (5) are embedded in the limiting grooves (24). The curvature adjusting assembly (2) further comprises side protective sleeves (22) connected to the outer sides of the U-shaped positioning members (213).

3. The curved detector of claim 2, wherein, And / or, the curvature adjusting assembly (2) further comprises end protective sleeves (23) connected to the connecting plates (2121) of the hinged units (21) away from the structure frame (1). ​ 4. The curved detector of claim 2, wherein, ​ 5. The curved detector of claim 2, wherein, ​ 6. The curved detector of claim 5, wherein, ​ ​ 7. The curved detector of any of claims 1-6, wherein, The circuit board assembly (3) comprises a signal processing circuit board (31) and a curvature acquisition circuit board (32), the curvature adjustment assembly (2) is provided with a flexible curvature sensor (4), the flexible curvature sensor (4) is electrically connected with the curvature acquisition circuit board (32), and the curvature acquisition circuit board (32) is configured to convert a deformation signal of the flexible curvature sensor (4) into a digital code and transmit the digital code to the signal processing circuit board (31).

8. The curved detector of any of claims 1-6, wherein, The flexible sensor assembly (5) comprises a flexible radiographic imaging sensor (51), an upper surface film (52), a lower surface film (53) and an edge gasket (54), the flexible radiographic imaging sensor (51) is arranged between the upper surface film (52) and the lower surface film (53), and the edge gasket (54) is circumferentially arranged around the upper surface film (52) and the lower surface film (53).

9. The curved detector of claim 8, wherein, The edge gasket (54) is a foam double-sided adhesive tape or a silica gel gasket.

10. The curved detector of claim 8, wherein, The flexible sensor assembly (5) further comprises an anti-backscatter film (55) which is attached below the lower surface film (53) and is used for preventing ray scattering.

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