Detection device for scanning detection of a subject

Abstract

A detection device for scanning and detecting a subject 2, comprising: a detection channel 1 through which the subject 2 enters and leaves the detection device; an imaging system 6 for scanning and detecting the subject 2; and a posture adjustment structure 4 provided in a detection area 63 for adjusting the posture of the subject 2 located in the detection area 63, wherein the imaging system 6 includes: a radiation source 6S arranged on one side of the detection channel 1 for generating radiation that forms at least a main beam plane 61 suitable for scanning and detecting the subject 2; and a detector 6T arranged on the other side of the detection channel 1 for receiving radiation that has passed through the subject 2, forming a detection area 63 between the radiation source 6S and the detector 6T, wherein the subject 2 has a detection plane 21, and the posture adjustment structure 4 is capable of adjusting the posture of the subject 2 so that the detection plane 21 and the main beam plane 61 are in the same plane.

Description

[Technical Field]

[0001] The present disclosure relates to the field of radiation detection technology, and more particularly to a detection device for scanning and detecting a subject. [Background technology]

[0002] Radiation detection technology is a technology that uses radiation to detect the inside of a subject. This technology can obtain information about the internal structure and density of a subject without destroying it, and is currently widely used in chest X-ray imaging in hospitals and security checks at train stations and airports.

[0003] In current detection devices, CT scanning technology can be used to detect objects. For example, objects contain thin-layer structures, especially "sandwich" type thin-layer structures. Thin layers have thin thicknesses and their adjacent layers have imaging interference, so in traditional spiral scanning, adjacent layers interfere with the central layer (thin layer), that is, when radiation passes through the central layer, it also passes through the adjacent layers, affecting the resolution and recognition of the image. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above, the present disclosure provides a detection device for scanning and detecting an object. [Means for solving the problem]

[0005] In one aspect, there is provided a detection apparatus for scanning and detecting a subject, comprising: a detection channel through which the analyte enters and leaves the detection device; an imaging system for scanning the subject; a posture adjustment structure provided in the detection area for adjusting the posture of the subject positioned in the detection area, The imaging system includes: a radiation source disposed on one side of the detection channel for generating radiation forming a main beam plane suitable for scanning detection of at least the object; a detector disposed on the other side of the detection channel, forming a detection area between the radiation source and the detector, the detector configured to receive radiation that has passed through the subject; the specimen has a detection surface; The attitude adjustment structure provides a detection device that can adjust the attitude of the subject so that the detection plane and the main beam plane are in the same plane.

[0006] According to some exemplary embodiments, it is possible to change the relative position of the subject with respect to the imaging system so that the imaging system can scan and detect the subject at multiple angles in the plane in which the main beam plane is located.

[0007] According to some exemplary embodiments, the imaging system is allowed to rotate relative to the object in a plane in which the main beam plane lies.

[0008] According to some exemplary embodiments, the imaging system includes a plurality of detectors disposed opposite the radiation source, and having a plurality of coplanar main beam planes formed between the plurality of detectors and the radiation source; The attitude adjustment structure can adjust the attitude of the subject so that the detection surface and the plurality of main beam planes are in the same plane.

[0009] According to some exemplary embodiments, the attitude adjustment structure can move the subject in a first direction parallel to a transport direction of the subject so that the subject has a plurality of detection surfaces.

[0010] According to some exemplary embodiments, for each detection plane, the attitude adjustment structure can position the subject so that the detection plane and the main beam plane are in the same plane.

[0011] According to some exemplary embodiments, the object includes a detection portion having the detection surface, and the detection portion has a ratio of an area value of a projection along a first direction to a size value in the first direction of 10 or more, and the first direction is parallel to a transport direction of the object.

[0012] According to some exemplary embodiments, a ratio between the size of the detector in the first direction and the size of the detection portion in the first direction is in the range of 1-8.

[0013] According to some exemplary embodiments, the radiation source has a focus size of 1 mm or less.

[0014] According to some exemplary embodiments, the attitude adjustment structure comprises: a substrate disposed to extend along the first direction and having a mounting surface suitable for mounting the subject; a first adjustment member disposed on the base, for driving the object to deflect around a second direction on the mounting surface and for driving the object to move in the first direction; at least one second adjustment member provided on the substrate for driving the subject to rotate about a third direction; Here, any two of the first direction, the second direction, and the third direction intersect with each other.

[0015] According to some exemplary embodiments, the first adjustment member comprises: a frame slidable in the first direction relative to the base; a rotating member rotatably mounted on the frame with an axis parallel to the second direction as a rotation axis, the rotating member driving the subject on the mounting surface to shift around the second direction by an external force, and driving the subject to move in the first direction by the frame.

[0016] According to some exemplary embodiments, the detection area includes an entrance and an exit; The detection device further includes a first transmission mechanism disposed on one side of an entrance to the detection area for transporting the analyte to the detection area.

[0017] According to some exemplary embodiments, the first transmission mechanism comprises: A drive unit; a lead screw connected to the drive device and capable of being driven by the drive device; a first slide rail whose extending direction is parallel to the extending direction of the feed screw; and a slide mechanism connected to the lead screw, the slide mechanism being driven by the lead screw so that the slide mechanism pushes the subject to slide on the first slide rail.

[0018] According to some exemplary embodiments, the imaging system includes a plurality of radiation sources and a plurality of detectors; the plurality of radiation sources are disposed opposite the plurality of detectors, respectively, thereby forming a plurality of radiation source-detector sets; a main beam plane is formed between each of the radiation source detector sets; The main beam planes of the plurality of radiation source detector sets are located on the same plane; The attitude adjustment structure can adjust the attitude of the subject so that the detection surface and a main beam plane of the plurality of radiation source detector sets are in the same plane.

[0019] The above and other objects, features and advantages of the present disclosure will become apparent from the following description of the embodiments of the present disclosure, taken in conjunction with the drawings. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram showing the overall configuration of a detection device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic top view of a first transmission mechanism according to an embodiment of the present disclosure. [Figure 3] FIG. 3 is a schematic cross-sectional view taken along the plane AA of FIG. [Figure 4] FIG. 4 is a schematic diagram illustrating a method for adjusting the second adjustment member according to an embodiment of the present disclosure. [Figure 5] FIG. 5 is a schematic diagram illustrating a method for adjusting the first adjustment member according to an embodiment of the present disclosure. [Figure 6] FIG. 6 schematically illustrates a front view of a first adjustment member according to an embodiment of the present disclosure. [Figure 7] FIG. 7 schematically illustrates a top view of a first adjustment member according to an embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic cross-sectional view taken along line AA in FIG. [Figure 9] FIG. 9 is a schematic cross-sectional view taken along line BB in FIG. [Figure 10] FIG. 10 is a schematic diagram illustrating the structure of a dial head according to an embodiment of the present disclosure. [Figure 11] FIG. 11 is a schematic cross-sectional view taken along line CC in FIG. [Figure 12] FIG. 12 schematically illustrates a side view of the first transmission mechanism according to an embodiment of the present disclosure. [Figure 13] FIG. 13 is a schematic diagram illustrating the principle of radiation imaging according to an embodiment of the present disclosure. [Figure 14] FIG. 14 schematically illustrates a top view of a second adjustment member according to an embodiment of the present disclosure. [Figure 15] FIG. 15 schematically illustrates a front view of a second adjustment member according to an embodiment of the present disclosure. [Figure 16] FIG. 16 is a schematic cross-sectional view taken along line DD of FIG. [Figure 17] FIG. 17 schematically illustrates a top view of another example of a second adjustment member according to an embodiment of the present disclosure. [Figure 18] FIG. 18 schematically illustrates a front view of an attitude adjustment structure according to an embodiment of the present disclosure. [Figure 19]FIG. 19 schematically illustrates a top view of an attitude adjustment structure according to an embodiment of the present disclosure. [Figure 20] FIG. 20 schematically illustrates a perspective view of a subject, according to some exemplary embodiments of the present disclosure. [Figure 21] FIG. 21 is a schematic diagram of a detection device according to an embodiment of the present disclosure. [Figure 22] FIG. 22 is a diagram illustrating a schematic diagram of a radiographic image generated by a detection device according to some exemplary embodiments of the present disclosure. [Figure 23] FIG. 23 is a flowchart of a method for acquiring characteristic information of a subject according to an embodiment of the present invention. [Figure 24] FIG. 24 is a schematic structural block diagram of an apparatus for acquiring characteristic information of a subject according to an embodiment of the present invention. [Figure 25] FIG. 25 shows a schematic block diagram of electronic equipment suitable for implementing a method for obtaining characteristic information of a subject according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings, where the description is for illustrative purposes only and should not be construed as limiting the scope of the present disclosure. In the following detailed description, for the sake of convenience, specific details are described to provide a thorough understanding of the embodiments of the present disclosure. However, one or more embodiments can be practiced without these details. In addition, in the following description, known configurations and known techniques are omitted to avoid unnecessary misunderstanding of the concept of the present disclosure.

[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the terms "including," "comprising," and the like indicate the presence of stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, and / or components.

[0023] When phrases like "at least one of A, B, or C, etc." are used, they should generally be interpreted according to the meaning ordinarily understood by one of ordinary skill in the art. (For example, "a system comprising at least one of A, B, or C, etc." includes, but is not limited to, systems having A only, B only, C only, A and B, A and C, B and C, and / or A, B, or C.) The terms "first" and "second" are used for descriptive purposes only and are not to be understood as designating or suggesting relative importance or as implicitly designating the number of described technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features.

[0024] In the embodiments of the present invention, unless otherwise specified, the X direction, Y direction, and Z direction are used to describe relative positional relationships, and it should be understood that these directions do not limit the embodiments of the present disclosure. Generally, the X direction is also called the first direction, the Y direction is also called the second direction, and the Z direction is also called the third direction.

[0025] In related technologies, the entire object is typically scanned, resulting in a relatively long scanning range. Multi-row detectors are commonly used, and the number of sampling angles is often less than 1,000. Current detectors have too large pixel sizes, with most pixel sizes at the millimeter level, unable to meet micron-level detection requirements, meaning higher resolutions cannot be achieved. Furthermore, the insufficient detection angle results in insufficient circumferential sampling rates, making it difficult to reconstruct clear edge images. Other drawbacks include high costs and the selection of optical equipment and detectors that are not suitable for the high-resolution CT examination requirements.

[0026] One embodiment of the present disclosure provides a detection device for scanning and detecting an object, the detection device including: a detection channel through which the object enters and exits the detection device; an imaging system for scanning and detecting the object; and an attitude adjustment structure disposed in the detection area for adjusting the attitude of the object located in the detection area. The imaging system includes: a radiation source disposed on one side of the detection channel for generating radiation that forms at least a main beam plane suitable for scanning and detecting the object; and a detector disposed on the other side of the detection channel for receiving radiation that has passed through the object, forming a detection area between the radiation source and the detector, wherein the object has a detection plane, and the attitude adjustment structure is capable of adjusting the attitude of the object so that the detection plane and the main beam plane are coplanar. In an embodiment of the present disclosure, the attitude adjustment structure can be disposed so that the detection plane and the main beam plane are coplanar, thereby achieving high-resolution inspection of a slice of interest while also ensuring detection efficiency. Furthermore, components of the imaging system can be adaptively adjusted according to specific conditions of the object, providing greater flexibility and options. That is, in the embodiments of the present disclosure, detection of an object can be achieved by coordinating and optimizing multiple aspects, such as detector selection and scanning method, etc. Regarding the detection range, the goal of detecting the entire package is abandoned, and positioning, scanning, and system reconstruction are performed only on a specific cross section of the object, thereby ensuring detection efficiency while realizing high-resolution inspection of the slice of interest.

[0027] FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present disclosure. FIG. 21 is a schematic diagram of a detection device according to an embodiment of the present disclosure. Referring to FIGS. 1, 13, and 21, the detection device is used to scan and detect a specimen 2. The detection device provided in the embodiment of the present disclosure includes a detection channel 1, a first transmission mechanism 3, an attitude adjustment structure 4, and an imaging system 6. For example, the specimen enters and exits the detection device via the detection channel 1. The first transmission mechanism 3 is disposed on the entrance side of the detection area 63 and is used to transport the specimen to the detection area. The attitude adjustment structure 4 is disposed in the detection area and is used to adjust the attitude of the specimen 2 located in the detection area. The imaging system 6 is for scanning and detecting the subject, and includes a radiation source 6S, which is arranged on one side of the detection channel 1, and generates radiation that forms a main beam plane 61 suitable for scanning and detecting the subject, and a detector 6T, which is arranged on the other side of the detection channel 1, and receives the radiation that has passed through the subject, and a detection area 63, which includes an entrance and an exit, is formed between the radiation source and the detector. The subject has a detection plane 21, and the attitude adjustment structure 4 can adjust the attitude of the subject 2 so that the detection plane 21 and the main beam plane 61 are flush with each other.

[0028] Specifically, the imaging system 6 is used to scan and detect the subject, the first transmission mechanism 3 is provided on the entrance side of the imaging system and is used to transport the subject to the imaging system, the support structure 43 passes through a scanning area 62 of the imaging system 6 and is arranged extending along the X direction, the support structure 43 has a mounting surface 411 that is suitable for placing the subject 2 on, and the subject 2 can be slid along the X direction to pass through the imaging system 6 by driving the first transmission mechanism 3. However, the first transmission mechanism 3 includes a transmission frame, a drive unit 31 fixed to the transmission frame, a feed screw connected to the drive unit and drivable by the drive unit, a first slide rail 33 fixed to the transmission frame and whose extending direction is parallel to that of the feed screw, and a slide mechanism connected to the feed screw 32, and the feed screw can be cooperated with the movement of the slide mechanism so that the slide mechanism pushes the subject 2 to slide it on the first slide rail 33 and the support structure 43. According to the above configuration design, by using the feed screw for transmission, the object can be accurately positioned within the scanning area 62 of the imaging system of the detection device, which effectively solves the problem of insufficient positioning accuracy of the transmission system of the detection device and meets the quality requirements of image detection for some products.

[0029] In an embodiment of the present disclosure, an object is transported to a specified location via a first transmission mechanism and a support structure, and then scanned and detected by an imaging system. Specifically, the first transmission mechanism includes a drive unit, a feed screw, a slide mechanism, and a first slide rail. The drive unit rotates the feed screw, which moves the slide mechanism through its rotation. The object is placed on the first slide rail. When the slide mechanism is driven by the feed screw, the slide mechanism pushes the object along the first slide rail. An end of the slide rail is connected to the support structure, one end of the support structure cooperates with the end of the slide rail, and the other end of the support structure passes through a scanning area of ​​the imaging system. When driven by the drive unit, the slide mechanism extends from the first slide rail, thereby pushing the object and sliding it along the support structure, accurately positioning the object within the scanning area of ​​the imaging system and improving the positioning accuracy of the transmission system of the detection device.

[0030] The above-mentioned "specific location" means that the part of the subject to be detected is located exactly within the scanning area of ​​the imaging system (i.e., the radiation main beam plane of the imaging system), which facilitates scanning and inspection. The meaning of the "specific location" in this specification can be understood according to the contents herein, so it will not be explained again.

[0031] It should also be noted that in the embodiment of the present disclosure, the first transmission mechanism and the support structure are arranged in order along the transport direction of the test object. In this case, a gap of a certain width may exist between the first transmission mechanism and the support structure. Note that the gap may exist as long as the test object can pass through smoothly when being transported from the first transmission mechanism to the support structure.

[0032] In another embodiment of the present disclosure, the first transmission mechanism and the support structure may be an integral structure. That is, the first transmission mechanism and the support structure may belong to different sections of the same transmission device. For example, if the "same transmission device" is a transmission belt, the first transmission mechanism may include the front half of the transmission belt, and the support structure may include the rear half of the transmission belt. In this case, the subject may be accurately positioned within the scanning area of ​​the imaging system. It should be understood that the "transmission belt" in the embodiments of the present disclosure is used merely as an example to facilitate understanding of the present invention, and does not limit the transmission form of the first transmission mechanism and the support structure.

[0033] For example, in an embodiment of the present disclosure, the imaging system 6 may include at least one of a CT imaging system and a DR imaging system for scanning and detecting the subject 2. For example, a CT imaging system includes a radiation source, a detector, and other components. In CT imaging, an X-ray beam scans a layer having a certain thickness on the subject. The X-rays passing through the layer are received by a detector and converted into visible light. These are then converted into electrical signals by a photoelectric converter and into digital signals by an analog-to-digital converter, and a CT image is obtained through computer processing. CT imaging has high resolution and excellent spatial resolution, resulting in clear three-dimensional images. For example, a DR imaging system may include components such as an electronic cassette, a scan controller, and an image monitor. In DR imaging, X-ray photons are directly converted into a digital image via an electronic cassette to obtain the DR image. DR imaging is fast, requires low radiation dose, has high spatial resolution, and has a low noise rate.

[0034] To ensure completeness and accuracy of imaging, it is necessary to ensure that the detection plane and the main beam plane are on the same plane. The axis parallel to the main beam plane is defined as the Z axis, and the axis parallel to the direction of advancement of the subject is defined as the X axis. The Y axis is defined as being perpendicular to both the X and Z axes. The scanning area formed by the radiation emitted from the radiation source is approximately cone-shaped.

[0035] In the embodiment of the present invention, the attitude adjustment structure is used to adjust the subject 2 to a preset detection position.

[0036] Within the plane in which the main beam plane lies, the position of the object relative to the imaging system can be varied so that the imaging system can scan and detect the object at multiple angles.

[0037] For example, the radiation source and detector of the imaging system may be fixed and the subject may rotate around the X-axis, or the radiation source and detector of the imaging system may rotate around the axis of the detection channel and the subject may be stationary, or the radiation source and detector of the imaging system may rotate around the axis of the detection channel and the subject may rotate around the X-axis.

[0038] Of course, the imaging system may include multiple radiation sources and multiple detectors, where the multiple radiation sources are respectively positioned opposite multiple detectors, and the radiation sources and detectors form radiation source-detector sets, one main beam plane is formed between each radiation source-detector set, and the main beam planes of the multiple radiation source-detector sets are located in the same plane.

[0039] It should be noted that a radiation source-detector set includes at least one radiation source and one detector, that is, a radiation source-detector set may be composed of one radiation source and one detector, or may be composed of one radiation source and multiple detectors.

[0040] This attitude adjustment structure can adjust the attitude of the subject so that the detection planes of the multiple radiation source detector sets and the main beam plane are on the same plane.

[0041] In some exemplary embodiments of the present disclosure, the relative position of the subject with respect to the imaging system can be changed so that the imaging system can scan and detect the subject at multiple angles in the plane in which the main beam plane is located.

[0042] In some exemplary embodiments of the present disclosure, the imaging system is capable of rotating relative to the object in the plane in which the main beam surface lies.

[0043] In some exemplary embodiments of the present disclosure, the imaging system includes a plurality of radiation sources and a plurality of detectors, and the plurality of radiation sources are respectively arranged opposite the plurality of detectors to form a plurality of radiation source detector sets, a main beam plane is formed between each radiation source detection component, the main beam planes of the plurality of radiation source detector sets are located on the same plane, and the attitude adjustment structure can adjust the attitude of the subject so that the detection plane and the main beam planes of the plurality of radiation source detector sets are in the same plane.

[0044] In some exemplary embodiments of the present disclosure, the attitude adjustment structure can move the subject in a first direction so that the subject has multiple detection surfaces, the first direction being parallel to the subject's transport direction.

[0045] In some exemplary embodiments of the present disclosure, the attitude adjustment structure can position the subject for each detection plane so that the detection plane and the main beam plane are in the same plane.

[0046] In some embodiments of the present disclosure, the subject includes a detection portion, the detection portion has a detection surface, and a ratio between an area value of a projection of the detection portion along a first direction and a size value of the detection portion in the first direction is 10 or greater.

[0047] In some embodiments of the present disclosure, the ratio of the size of the detector in the first direction to the size of the detection portion in the first direction is within the range of 1 to 8. That is, the detector only needs to cover the detection portion of the specimen. In this manner, embodiments of the present disclosure allow for the selection of a detector with a narrow width and high resolution. For example, the width (i.e., size in the first direction) of the detector may be less than 100 mm, and the pixel size of the detector may be less than 500 μm. Embodiments of the present disclosure allow for the selection of a detector with a narrow width and high resolution, which is advantageous for cost reduction.

[0048] In some exemplary embodiments of the present disclosure, the focus size of the radiation source is 1 mm or less, in other words, a radiation source with a smaller focus size can be selected to ensure spatial resolution.

[0049] In the field of radiation detection, it has been found that radiation imaging technology can image internal damage within a test object, facilitating inspection by inspectors. In test objects, the detection area has a small detection size. For example, in an embodiment of the present disclosure, the test object includes a lithium battery. The lithium battery detection process requires testing the film or adhesive layer of the lithium battery, but the film or adhesive layer of the lithium battery is thin. Referring to FIGS. 20 and 21 , a test object 2, such as a lithium battery, can include a first portion 2A, a detection portion 2B, and a second portion 2C. For example, the detection portion 2B can be a film or adhesive layer having a thin layer structure. That is, the test object 2 has a "sandwich" thin layer structure in which the detection portion 2B is located in the center, and the first portion 2A and the second portion 2C are slightly located in the layers before and after it.

[0050] In an embodiment of the present disclosure, a thin-layer structure can be understood as one in which the thickness of the structure and the cross-sectional area of ​​the structure are not comparable, for example, the ratio of the area value of the projection of the thin-layer structure along the thickness direction to the dimension value of the thin-layer structure in the thickness direction is 10 or more.

[0051] An embodiment of the present disclosure is an attitude adjustment structure including a base body extending along a first direction and having a mounting surface suitable for placing a test object thereon, and a first adjustment member installed below the base body, wherein the first adjustment member comprises a frame that is slidable in the first direction relative to the base body, a lever that is rotatable on the frame with the Y-axis as a rotation axis, and a dial head that is arranged on the lever and is driven by the lever to abut against the test object, thereby shifting the test object around the second direction on the mounting surface and / or moving the test object in the first direction on the mounting surface.

[0052] The attitude adjustment structure described in the embodiments of the present disclosure can be used to adjust the moving attitude of an object being transported on a production line, and can also be used to adjust an object to a preset detection position in the field of radiation detection. When applied to the field of radiation detection, there are at least the following scenarios that require the use of the attitude adjustment structure of the present disclosure:

[0053] In the field of radiation detection, radiation imaging technology can visualize internal damage within a test object, facilitating inspection by inspectors. In some cases, the inspection area of ​​a test object is narrow. For example, in the inspection process for lithium batteries, the film and adhesive layer of the lithium battery must be inspected, but the thickness of the film and adhesive layer is relatively small. As shown in Figures 4, 5, 20, and 21, the area indicated by 2B in the figures is the film or adhesive layer. The axis parallel to the main beam plane 61 is defined as the Z axis, and the axis parallel to the forward direction of the test object 2 is defined as the X axis. The Y axis is defined as perpendicular to both the X and Z axes. The scanning area 62 formed by the radiation emitted by the radiation source 6S is approximately conical. During actual detection, the inventors discovered that if the measured layer of the film or adhesive layer (the detection plane parallel to the main beam plane) shifts in the third or second direction, the measured layer may fall outside the scanning range due to the influence of the shape of the scanning area. If the measured layer falls outside the scanning range, part of the measured layer cannot be detected, resulting in a problem of reduced detection accuracy.

[0054] In an embodiment of the present disclosure, for an object having a thin layer structure, the thin layer of the object is accurately positioned so that the thin layer of the object is located within the main beam plane, and a specific thin layer can be subjected to scanning detection, for example, by circular rail scanning, and in the imaging process, it can be ensured that radiation passes only through the central layer (i.e., thin layer structure 2B) or minimizes passage through the front and back layers, thereby improving the accuracy of the image.

[0055] 6 to 19, the posture adjustment structure 4 includes a first adjustment member 42 provided on the first transmission mechanism 3. Of these, the first adjustment member 42 includes a lever 4221 provided on a frame 421 to be rotatable about the Y axis as a rotation axis, and a dial head 4222 provided on the lever 4221, driven by the dial head 4222, and abutting against the subject 2 so as to displace the subject 2 around the Y direction on the mounting surface 411 and / or move the subject 2 along the X direction on the mounting surface 411.

[0056] In the embodiment of the present disclosure, the support structure 41 is disposed extending along the X direction, and multiple specimens 2 can be placed at intervals on the mounting surface 411 of the support structure 41. The support structure 41 can be a general production conveyance line such as a production workbench or a logistics line.

[0057] The support structure 41 is designed as a streamlined support frame including two frame bodies arranged opposite each other, with the first adjustment member disposed between the two frame bodies. The two frames have an L-shaped cross section, with a horizontal support arm and a vertical support arm. A support rail is installed on the horizontal support arm, with the upper surface of the support rail serving as the mounting surface. The subject 2 is supported by the mounting surface 411 of the support rail across the two support rails, thereby achieving the function of placing the subject 2.

[0058] The subject 2 in the embodiment of the present disclosure may be a lithium battery, but when placing the lithium battery on the mounting surface 411, it is necessary to ensure that the surface on which the adhesive layer and the film layer are located faces the radiation source of the imaging system 6.

[0059] In the embodiment of the present disclosure, the first adjustment member 42 further includes a rotation member 422. The rotation member 422 is rotatably disposed on the frame 421 around the Y axis as a rotation axis, and is driven by an external force to shift the subject 2 around the Y direction on the mounting surface, or the rotation member 422 can move the subject 2 along the X direction by driving the frame 421.

[0060] It will be appreciated that the rotating member 422 may take on a variety of structural forms, but in the embodiment of the present disclosure, the rotating member 422 takes the form of a combination of a lever 4221 and a dial head 4222 .

[0061] Specifically, a lever 4221 is mounted on the frame 421. The lever 4221 is rotatably disposed on the frame 421 around the Y axis. A rotation shaft 4223 is provided on the frame 421 along the Y direction, and the rotation shaft 4223 is fixed to the frame 421. The frame 421 also has a frame extending laterally between the frame bodies, and the rotation shaft 4223 is disposed at the center of the upper end surface of the frame. By setting the rotation shaft 4223 at the center, the length of the rotation arm of the lever 4221 disposed on the rotation shaft 4223 can be kept consistent, making it easy to adjust the deviation angle thereafter.

[0062] In order to enable the levers 4221 to be rotatably attached to the rotation shaft 4223, it can be understood that in an embodiment of the present disclosure, the levers 4221 are provided on an adapter block 4224, and two levers 4221 are arranged opposite each other. A mounting hole is machined in the center of the adapter block 4224, and a bearing 4225 and a retaining ring 4226 that prevents the bearing 4225 from slipping out of the mounting hole are embedded in this mounting hole. The rotation shaft 4223 is attached in cooperation with the bearing 4225, thereby realizing rotation of the adapter block 4224 about the rotation shaft 4223, and the lever 4221 is driven to rotate about the Y direction.

[0063] Furthermore, the first adjustment member 42 in the embodiment of the present disclosure includes a dial 4222 provided on a lever 4221, and by driving the lever 4221, the dial 4222 is brought into contact with the subject 2, thereby deflecting the subject 2 around the Y direction on the mounting surface 411 or moving the subject 2 along the X direction on the mounting surface 411.

[0064] In an embodiment of the present disclosure, a dial head 4222 is installed at each end of the two levers 4221, and the dial head 4222 protrudes from the mounting surface 411 so that it can abut against an end surface that is away from the movement direction of the subject 2 when the frame 421 moves and retracts, and the abutment position of the dial head 4222 is shifted from the center position of the end surface to achieve deflection of the subject 2.

[0065] In the process of driving the dial head 4222 to displace the subject 2 around the Y direction on the mounting surface 411, the frame 421 is driven by an external force to move to the subject 2, and when the subject 2 displaces in the Y direction, the adapter block 4224 rotates, which in turn rotates the lever 4221, causing the dial head 4222 on the lever 4221 to act on the subject 2, which then pushes and rotates the subject 2, thereby correcting the displacement of the subject 2. Of these, the method of detecting whether the subject 2 displaces in the Y direction may be to detect the current spatial position coordinates of the subject 2 using a position sensor and determine whether or not there has been a displacement, or may be determined based on the detection result of the subject 2 from the previous time. If a displacement occurs, it is necessary to adjust the current displacement of the subject 2.

[0066] After the deviation correction of the object 2 is completed, if the frame 421 continues to move in the X direction, the dial head 4222 will push the object 2 to move in the X direction, and it will be understood that the next detection step can be started.

[0067] It can be understood that in some embodiments, the dial head 4222 driven by the lever 4221 can only abut against the subject 2 and drive the subject 2 to move around the Y direction on the support surface 411. The movement of the subject 2 in the X direction can be driven by other structures.

[0068] It may be understood that in some embodiments, the rotating member 422 may be a combination of a turntable and an elevator mechanism. Specifically, the turntable is disposed on an elevator mechanism, and can be raised and lowered in the Y direction by driving the elevator mechanism, and can receive the subject 2 on the support structure 41 when raised. At the same time, the turntable is rotatably mounted on the elevator mechanism, and can be driven by an external force to receive the subject 2 while rotating about the Y direction. In addition, the elevator mechanism is fixed to the frame 421, and can move the turntable in the X direction by driving the frame 421, so that deviation of the subject 2 in the Y direction can be adjusted.

[0069] 6 to 12 , in an embodiment of the present disclosure, the first adjustment member 42 also includes a first driving unit 4227 for promoting the rotation of the adapter block 4224. Specifically, the first driving unit 4227 has a push rod 42271 that is movable toward or away from the adapter block 4224, and a first motor 42272. One end of the push rod 42271 is movably connected to the adapter block 4224, and the other end is connected to the first motor 42272. In order for the push rod 42271 to be able to push the adapter block 4224 to rotate around the rotation axis 4223, the push rod 42271 needs to be connected to an end of the adapter block 4224 that is remote from the rotation axis 4223, and generates a rotational moment when pushing.

[0070] The first motor 42272 is disposed on the frame 421, and rotation of the first motor 42272 rotates the push rod 42271. A nut sleeve 42241 is attached to the end face of the adapter block 4224 on the push rod 42271 side, and the push rod 42271 is provided with a feed screw portion that screws into the nut sleeve 42241. When the push rod 42271 rotates, the threaded portion rotates inside the nut sleeve 42241, driving the rotation of the push rod 42271.

[0071] It can be seen that the embodiment of the present disclosure has two sets of first drive units 4227, which are arranged symmetrically with respect to the rotation axis 4223. When the two sets of first drive units 4227 drive the lever 4221 to rotate, the push rod 42271 of one of the first drive units 4227 moves toward the lever 4221, and the push rod 42271 of the other first drive unit 4227 moves away from the lever 4221.

[0072] In other embodiments, it goes without saying that the number of first drive units 4227 may be one set. When there is one set of first drive units 4227, the push rod 42271 and the adapter block 4224 are adjusted in the form of a universal joint and an extendable rod being fitted together, thereby enabling the lever 4221 to swing back and forth around the Y direction.

[0073] It may be appreciated that in some embodiments, there may be more than one dial head 4222 attached to the lever 4221 to suitably adjust the dial position.

[0074] As described above, in the embodiment of the present disclosure, when the frame 421 moves, it has a push function that moves the test objects 2 in the X direction via the dial head 4222. The test objects 2 are placed on the support structure 41 at intervals. When the frame 421 drives the previous test object 2 to move to the next process, the frame 421 retracts and the dial head 4222 is brought back into contact with an end face away from the direction of movement of the test object 2, thereby pushing and moving the test object 2 in the X direction. In order for the first adjustment member 42 to achieve continuous transport of the test objects 2 on the support structure 41, in the embodiment of the present disclosure, the dial head 4222 must be rotatably mounted on the lever 4221 and be rotatable around the axial direction of the lever 4221. Moreover, the dial head 4222 is configured as an eccentric structure, and has a first position in which it extends outside the mounting surface 411 under the action of an eccentric force and a second position in which it is inverted below the mounting surface 411 under the action of an external force. When the dial head 4222 moves in the X direction, it is used to push the subject 2 to move in the X direction when the subject 2 is at the first position.

[0075] The dial head 4222 has a pressing surface 42222 suitable for contacting the subject 2, and a guide surface 42223 disposed obliquely relative to the pressing surface 42222 and suitable for receiving an external force. The dial head 4222 in this embodiment has a right-angled triangular shape, with the surface on which the right-angled side is located corresponding to the pressing surface 42222, and the surface on which the oblique side is located corresponding to the guide surface 42223. The limiting structure 42224 limits the rotation of the dial head 4222 when it moves to the first position, and drives the dial head 4222 so that when the frame 421 moves in the negative direction of the X-axis, the guide surface 42223 collides with the subject 2 and moves to the second position. The limiting structure 42224 is a limiting block provided on the guide surface 42223 and protruding from the guide surface 42223.

[0076] A counterweight block 42221 is provided on the dial head 4222 so that the center of the dial head 4222 does not overlap with the center of rotation, and the eccentricity of the dial head 4222 is adjusted so that the pressing surface 42222 is arranged parallel to the YZ plane at the first position. By arranging the pressing surface 42222 parallel to the YZ plane, the pressing surface 42222 can fit against the subject 2 when pressing the subject 2, and further, smooth movement of the subject 2 on the mounting surface 411 is ensured.

[0077] In an embodiment of the present disclosure, the method for carrying in the subject 2 involves transporting one subject 2 from a carry-in point on the support structure 41 at regular intervals. However, because the distance between the carry-in point of the subject 2 and the scanning area is relatively large, the distance between the carry-in point of the frame 421 and the scanning area is long, resulting in an increase in the transport time of the subject 2. To solve this problem, in an embodiment of the present disclosure, a dial head 4222 is rotatably mounted on the end of the frame 421 away from the first adjustment member 42. The dial head 4222 is installed at a regular interval from the first adjustment member 42 in the X direction, which can be half the distance between the carry-in point and the scanning area. When the frame 421 retreats and then advances at a regular interval, two subjects 2 can be advanced simultaneously, improving the transport efficiency of the subject 2.

[0078] It can be understood that when a plurality of subjects 2 are supplied at once, the efficiency of transporting the subjects 2 can be improved by adaptively providing a plurality of dial heads 4222 in the X direction.

[0079] As described above, the film or adhesive layer to be measured has a detection plane 21 parallel to the main beam plane 61. If a deviation occurs in the Z direction, the shape of the scanning area may affect the measurement layer, which may cause the measurement layer to move away from the scanning area. Therefore, based on this, the embodiment of the present disclosure also includes a second adjustment member 43. After correcting the deviation in the Y direction on the first adjustment member 42, the specimen 2 enters the second adjustment member 43 by driving the dial head 4222.

[0080] In an embodiment of the present disclosure, the detection device further includes a second slide rail 35 fixed to the frame 421 and supporting the slide mechanism 34. The slide mechanism 34 is provided with a slide groove 36 that cooperates with the second slide rail 35, and the slide mechanism 34 can slide on the second slide rail 35 via the slide groove 36. At the same time, the slide groove 36 cooperates with the second slide rail 35 to support the slide mechanism 34, improving stability during movement of the slide mechanism 34. Furthermore, the extension direction of the second slide rail 35 is parallel to the extension direction of the feed screw 32. When the feed screw 32 drives and moves the slide mechanism 34, the second slide rail 35 cooperates with the feed screw 32 to guide the movement direction of the slide mechanism 34, thereby ensuring that the direction in which the slide mechanism 34 moves the subject 2 is not deviated. For example, the second slide rail 35 may be a linear guide rail parallel to the extension direction of the feed screw 32.

[0081] As shown in FIG. 3, the rack 421 has a rectangular frame structure, with slide grooves 36 installed on two opposing frame edges, and a second slide rail 35 installed on the inner surface of the vertical wall of the support structure 41. The slide groove 36 is slidably mounted on the second slide rail 35 and is driven by an external force to move the frame 421 in the X direction relative to the support structure 41.

[0082] It will be appreciated that the external force may be in the form of a human-powered, electrically-powered, hydraulically-powered, or pneumatically-powered.

[0083] 2 and 3, in the embodiment of the present disclosure, two first slide rails 33 and two second slide rails 35 are provided, each on either side of the slide mechanism 34. Multi-point support can increase the stability of the movements of the slide mechanism 34 and the subject 2. However, the number of first slide rails 33 and second slide rails 35 in the embodiment of the present disclosure is not limited to this, and it goes without saying that the present disclosure also includes cases where a plurality of first slide rails 33 and / or second slide rails 35 are provided.

[0084] In some exemplary embodiments, the drive device 31 includes a servo motor. The servo motor converts a voltage signal into torque and speed to drive a controlled object. The rotor speed of the servo motor is controlled by an input signal, allowing for fast response. In an automatic control system, the received electrical signal can be converted into an angular displacement or angular velocity signal on the motor shaft and output, allowing for highly accurate control position. One end of the feed screw 32 is connected to the output end of the servo motor, and the other end of the feed screw 32 is connected to the frame 421. The center axis of the feed screw 32 is rotatable relative to the frame 421 around the rotation axis 4223.

[0085] The forward and reverse rotation of the servo motor drives the feed screw 32 to reciprocate the slide mechanism 34 along the second slide rail 35, thereby achieving batch transport of the test specimens.

[0086] In the embodiment of the present disclosure, the slide mechanism 34 is provided with at least one first adjustment member 42. When the slide mechanism 34 moves along the extension direction of the feed screw 32, the first adjustment member 42 moves together with the slide mechanism 34 and can simultaneously push and move the subject 2 on the first slide rail 33.

[0087] Furthermore, the distance from the connection point between the slide mechanism 34 and the feed screw 32 to the first adjustment member 42 should be equal to or greater than the length of the support structure 41, so that after the subject 2 is transferred from the first slide rail 33, one end of the pressing member provided on the slide mechanism 34 extends from the second slide rail 35 to continue pushing the subject 2, allowing it to slide on the support structure 41. As shown in Figure 13, the subject 2 passes through the scanning area 62 of the imaging system 6, and is then finally transferred from the exit side of the imaging system 6.

[0088] 14, 18 and 19, a second adjustment member 43 is provided on the support structure 41. The second adjustment member 43 includes a support plate 431 suitable for receiving the subject 2, which is rotatably arranged on the support structure 41 around the Z axis as a rotation axis. In the embodiment of the present disclosure, the support plate 431 is a support beam structure, and in order to achieve stable support of the subject 2, there are two support plates 431, which are each hingedly arranged on the support structure 41, and the horizontal support arms of the two frames of the support structure 41 are each provided with a corresponding hinge seat 433 to realize connection with the support plate 431.

[0089] One end of the support plate 431 close to the first adjustment member 42 is hingedly connected to the support structure 41. To ensure that the subject 2 moves smoothly from the first adjustment unit 42 to the second adjustment unit 43, the height of the mounting surface 411 in the Y direction can be controlled to be higher than the upper surface of the support plate 431.

[0090] In order to drive the rotation of the support plate 431, the second adjustment member 43 is provided on the support structure 41 and is positioned below and away from the hinge end of the support plate 431, and also includes a second drive unit 432 for driving the support plate 431 to rotate.

[0091] 15 and 16, the second drive unit 432 includes a second motor 4321 disposed on the support structure 41, and a lifting rod 4322 disposed on the motor shaft of the second motor 4321 and connected at one end to the support plate 431. The second motor 4321 drives and rotates the lifting rod 4322 via a coupling, and one end of the lifting rod 4322 is connected to a joint 434 provided on the lower end surface of the support plate 431. The lifting rod 4322 can be screwed to the joint 434. The forward and reverse rotation of the second motor 4321 can realize the forward and reverse rotation of the lifting rod 4322, thereby driving the support plate 431 to rotate clockwise or counterclockwise around the hinge axis.

[0092] The second driving unit 432 can be driven by a general motor driving a push rod 42271 or by extending and retracting a cylinder, but various other driving methods are possible depending on the embodiment.

[0093] The subject 2 placed on the mounting surface 411 is driven by the dial head 4222 by the action of the lever 4221 of the first adjustment member 42 to complete the adjustment of the deviation in the Y direction, and then driven by the frame 421, the dial head 4222 is pushed to complete the movement in the X direction, and enters the second adjustment member 43. The adjustment of the deviation in the Z direction is completed by driving the support plate 431 of the second adjustment member 43, and as a result, the posture adjustment of the subject 2 is completed, and the process moves to the next radiation imaging process.

[0094] It should be noted here that since radiation in radiographic imaging is easily attenuated when passing through a metal object, it is preferable that the support plate 431 and other structures of the second adjustment member 43 in this embodiment be made of carbon fiber material.

[0095] In addition, the inventors' actual manufacturing found that the stiffness of the carbon fiber support is average, and that the support plate 431 is prone to bending and deformation after repeated use. When different specimens 2 are mounted on the support plate 431, the support plate 431 is affected by changes in the weight of the specimens 2, and the degree of bending deformation varies. This requires adjusting the rotation angle of the support plate 431 each time, which increases the operation process. Based on this, the present disclosure provides another embodiment of the second adjustment member 43.

[0096] The second adjustment members 43 are arranged in two sets spaced apart in the X direction, and are arranged so that the scanning area 62 for radiation imaging is entirely within the spaced apart area during radiation imaging. Such an arrangement ensures that the support plate 431 uses a metal with better rigidity, while not attenuating radiation.

[0097] In an embodiment of the present disclosure, the transport system for the detection device may include a second transmission mechanism 5. The second transmission mechanism 5 is disposed on the exit side of the imaging system 6, is cooperatively connected to the support structure 41, and is used to transport the subject 2 from the support structure 41. After the subject 2 has been detected by the imaging system 6, it is transported to a waiting area via the second transmission mechanism 5 to await the next processing. At the same time, by providing the second transmission mechanism 5, the subject 2 can be transported to a position away from the imaging system 6, and the influence of radiation when the subject 2 is removed can be avoided.

[0098] The connection relationship between the support structure 41 and the second transmission mechanism 5 is the same as the connection relationship between the first transmission mechanism 3 and the support structure 41. The connection relationship between the first transmission mechanism 3 and the support structure 41 has already been described in detail, so it will not be repeated here.

[0099] Preferably, in the embodiment of the present disclosure, the transport mode of the second transmission mechanism 5 includes unpowered transport. That is, after the subject 2 is transported to the second transmission mechanism 5 by the support structure 41, the subject 2 can slide along the second transmission mechanism 5 by the action of its own gravity, thereby realizing the transport of the subject 2. This unpowered transport method has low transport costs and enables the subject 2 to be transported normally.

[0100] For example, the second transmission mechanism 5 may be an unpowered roller conveyor table having a plurality of inclined and freely rotatable rollers. After the specimen 2 is transferred from the support structure 41 to the roller conveyor table, the specimen 2 slides to the bottom end of the roller conveyor table using the rollers on the roller conveyor table, thereby completing the transport process of the specimen 2.

[0101] In the embodiment of the present disclosure, the transmission mode of the second transmission mechanism 5 may include a power conveying mode, if necessary. The power conveying mode increases the conveying distance, makes the conveying process more stable, and improves conveying efficiency. For example, the conveying mode of the second transmission mechanism 5 can be various modes, such as belt conveying, power roller conveying, synchronous belt conveying, and feed screw 32 conveying.

[0102] In the embodiment of the present disclosure, protective covers 11 are provided on both the entrance side and exit side of the imaging system 6, and the protective covers 11 are used to shield the radiation of the imaging system 6. Furthermore, the protective covers 11 are provided on the outside of the first transmission mechanism 3, the support structure 41, and the second transmission mechanism 5, which can greatly isolate the radiation emitted by scanning and detection, and have a better radiation protection effect.

[0103] Furthermore, in the embodiment of the present invention, the protective cover 11 is made of a folded metal plate, and the outer surface of the protective cover 11 is provided with a lead skin layer that can enhance the radiation shielding effect.

[0104] The operating principle of the transport system for the detection device in the embodiment of the present disclosure is that the first transmission mechanism 3, the support structure 41, and the second transmission mechanism 5 are all arranged inside the protective cover 11, thereby reducing the radiation dose of the imaging system 6. In the first transmission mechanism 3, the servo motor drives the lead screw 32, which moves the slide mechanism 34 along the second slide rail 35. The first adjustment member 42 attached to the slide mechanism 34 pushes the subject 2, which moves the slide rail 33 to the support structure 41, and slides along the support structure 41 to the scanning area 62 of the imaging system 6, where it is detected by the imaging system 6. After detection of the subject 2 is completed, the subject 2 is transported out of the protective cover 11 along the second transmission mechanism 5.

[0105] The conveying system for the detection device according to the embodiment of the present disclosure is suitable for use in the field of security inspection, and is particularly suited to detecting specific products that require high image detection quality. For example, it can accurately position ultrathin layers such as adhesive layers and films on batteries to obtain high-quality inspection images. However, the detection targets of the conveying system according to the embodiment of the present disclosure are not limited to the battery field.

[0106] In an embodiment of the present disclosure, the object 2 is controlled to be positioned within the scanning area. After a slice area of ​​interest reaches the scanning area, the imaging system is controlled to collect data on the slice of interest. Regarding the data collection method, the object can be kept stationary to collect complete circular orbit data, or the object can be moved slowly to collect complete spiral orbit data. After the acquisition of the slice of interest is completed, data reconstruction is performed. The attitude adjustment structure can quickly adjust the object 2 to the next slice of interest. After the next slice area of ​​interest reaches the scanning area, the imaging system is controlled to collect data for the next slice of interest. In this way, the entire scanning process of all slices of interest in the object 2 is completed. Therefore, in an embodiment of the present disclosure, high-resolution inspection of the slice of interest can be achieved while ensuring detection efficiency. Furthermore, the components of the imaging system can be adaptively adjusted according to the specific condition of the object, providing more options due to flexibility.

[0107] In an embodiment of the present disclosure, the posture of the subject is first acquired, and then the posture of the subject is automatically adjusted to realize an automatic positioning and scanning process of a thin layer. Specifically, the imaging system 6 is used to scan the subject 2 to acquire a first image of the subject 2, and the posture of the subject 2 can be acquired by analyzing the first image. Based on the acquired image of the subject 2, the posture adjustment structure can be controlled to adjust the posture of the subject 2 so that the detection plane of the subject 2 and the main beam plane of the imaging system 6 are located on the same plane. Thereafter, the imaging system 6 is controlled to irradiate and scan the subject 2 with radiation, and a second image of the subject 2 is acquired (e.g., the second image is a slice image of the subject 2).

[0108] In some embodiments, an additional imaging system may be used to scan the subject 2 and obtain a first image of the subject 2. For example, the additional imaging system may be a CT imaging system, a DR imaging system, or a visible light imaging system.

[0109] According to another aspect, an embodiment of the present disclosure provides a method for acquiring characteristic information of a subject, as shown in FIG. 23, including the following steps:

[0110] In step S201, the subject is controlled to pass through a detection device, which is used to scan and detect the subject, and the detection device includes a detection channel through which the subject passes and which enters and exits the detection device along a first direction, and an imaging system for scanning and detecting the subject.

[0111] In step S202, the imaging system is controlled to perform a radial scan on the object.

[0112] In step S203, a radial scan image of the subject is acquired.

[0113] In step S204, characteristic information of the subject is obtained from the radial scanning image.

[0114] For example, the subject 2 includes a first portion 2A, a detection portion 2B, and a second portion 2C, and to control the imaging system to perform a radial scan on the subject 2, the detection portion is located between the first portion and the second portion in the first direction.

[0115] For example, referring to FIG. 22, acquiring characteristic information of the subject from the radial scanning image includes acquiring, from the radial scanning image, a first division line 2L between the detection portion and the first portion and a second division line 2R between the detection portion and the second portion, and calculating the size along the first direction between the first division line 2L and the second division line 2R to acquire the size of the detection portion along the first direction.

[0116] According to some exemplary embodiments, the method further comprises obtaining a volume of the detection portion.

[0117] Obtaining characteristic information of the subject using the radial scanning image further includes obtaining an area of ​​a projection of the detection portion in the first direction based on the volume of the detection portion and the size of the detection portion along the first direction.

[0118] According to some exemplary embodiments, the method further comprises obtaining shape feature information of a projection of the detection portion in the first direction.

[0119] Obtaining characteristic information of the subject using the radial scanning image further includes obtaining characteristic information of a cross section of the detection portion perpendicular to the first direction based on the area of ​​the projection of the detection portion in the first direction and shape characteristic information of the projection of the detection portion in the first direction.

[0120] According to some exemplary embodiments, the attenuation characteristics of each of the first and second portions with respect to radiation emitted by an imaging system are different from the attenuation characteristics of the detection portion with respect to radiation emitted by an imaging system.

[0121] According to some exemplary embodiments, in the radial scanning image, the gray levels of each of the first portion and the second portion are different from the gray level of the detection portion, and obtaining a first division line between the detection portion and the first portion and a second division line between the detection portion and the second portion using the radial scanning image specifically includes identifying the first division line based on a difference in gray scale shown in the radial scanning image of the detection portion and the first portion, and identifying the second division line based on a difference in gray scale shown in the radial scanning image of the detection portion and the second portion.

[0122] For example, the shape of the projection of the detection portion in the first direction is circular, and acquiring characteristic information of a cross section of the detection portion perpendicular to the first direction based on the area of ​​the projection of the detection portion in the first direction and the shape characteristic information of the projection of the detection portion in the first direction specifically includes acquiring the radius of the cross section of the detection portion perpendicular to the first direction using a circular area calculation formula in accordance with the area of ​​the projection of the detection portion in the first direction.

[0123] For example, the shape of the projection of the detection portion in the first direction is a square, and acquiring characteristic information of a cross section of the detection portion perpendicular to the first direction based on the area of ​​the projection of the detection portion in the first direction and the shape characteristic information of the projection of the detection portion in the first direction specifically includes acquiring the side length of the cross section of the detection portion perpendicular to the first direction using a square area calculation formula in accordance with the area of ​​the projection of the detection portion in the first direction.

[0124] According to some exemplary embodiments, the detection device further comprises an attitude adjustment structure provided in the detection channel for adjusting the attitude of the subject positioned in the detection channel.

[0125] Controlling the imaging system to perform a radiation scan on the subject includes controlling the subject to move along the first direction within the detection channel by driving the attitude adjustment structure, and controlling the imaging system to continue emitting beams while the subject is moving, thereby performing continuous radiation scans on the subject.

[0126] According to some exemplary embodiments, the imaging system comprises a radiation source arranged on one side of the detection channel for generating radiation forming a main beam plane suitable for scanning and detecting at least the subject.

[0127] Controlling the imaging system to perform a radial scan on the subject further includes adjusting the orientation of the subject during the radial scan so that a detected surface of the subject and the main beam plane are in the same plane.

[0128] For example, the ratio of the area value of the projection of the detection portion in the first direction to the size value of the detection portion in the first direction is 10 or more.

[0129] For example, the ratio of the size of the detector in the first direction to the size of the detection portion in the first direction is within a range of 1-8.

[0130] 24 is a schematic structural block diagram of an apparatus 800 for acquiring feature information of a subject according to an embodiment of the present disclosure. The apparatus 800 includes an operation control module 810, a radiation scanning control module 820, an image acquisition module 830, and a feature information acquisition module 840.

[0131] The operation control module 810 is used to control the passage of the subject through a detection device, which is used to scan and detect the subject, and which includes a detection channel through which the subject passes and which enters and exits the detection device along a first direction, and an imaging system for scanning and detecting the subject.

[0132] A radial scan control module 820 is used to control the imaging system to perform a radial scan on the subject.

[0133] The image acquisition module 830 is used to acquire a radial scan image of the subject.

[0134] The feature information acquisition module 840 is used to acquire feature information of the subject by a radial scanning image, the subject including a first portion, a detection portion, and a second portion, and controlling the imaging system to perform a radial scan on the subject includes acquiring a first division line 2L between the detection portion and the first portion and a second division line 2R between the detection portion and the second portion by the radial scanning image, and calculating a size along the first direction between the first division line 2L and the second division line 2R, and acquiring the size along the first direction of the detection portion.

[0135] According to embodiments of the present disclosure, any two or more of the motion control module 810, the radiation scanning control module 820, the image acquisition module 830, and the feature information acquisition module 840 may be implemented together as a single module, or any one of the modules may be divided into multiple modules. Alternatively, at least a portion of the functionality of one or more of these modules may be combined with at least a portion of the functionality of the other modules and implemented in a single module. According to embodiments of the present disclosure, at least one of the motion control module 810, the radiation scanning control module 820, the image acquisition module 830, and the feature information acquisition module 840 may be implemented at least in part as a hardware circuit such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system-on-chip, a system-on-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or by any other reasonable means such as circuit integration or packaging, by hardware or firmware, or by any one or more suitable combinations of the three implementation methods of software, hardware, and firmware. Alternatively, at least one of the operation control module 810, the radiation scanning control module 820, the image acquisition module 830, and the feature information acquisition module 840 may be at least partially implemented as a computer program module, which can perform the corresponding function when executed.

[0136] FIG. 25 shows a schematic block diagram of electronic equipment suitable for implementing a method for obtaining characteristic information of a subject according to an embodiment of the present disclosure.

[0137] As shown in FIG. 25, an electronic device 900 according to an embodiment of the present disclosure includes a processor 901 that can perform various appropriate operations and processes according to a program stored in a read-only memory (ROM) 902 or loaded from a storage unit 908 into a random access memory (RAM) 903. The processor 901 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or associated chipset, and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)). The processor 901 may also include on-board memory for caching purposes. The processor 901 may include a single processing unit or multiple processing units for performing different operations according to the method flows of the embodiments of the present disclosure.

[0138] The RAM 903 stores various programs and data necessary for the operation of the electronic device 900. The processor 901, the ROM 902, and the RAM 903 are connected to one another via a bus 904. The processor 901 executes the programs in the ROM 902 and / or the RAM 903 to perform various operations related to the method flows of the embodiments of the present disclosure. Note that the programs may be stored in one or more memories other than the ROM 902 and the RAM 903. The processor 901 can also execute the programs stored in one or more memories to perform various operations related to the method flows of the embodiments of the present disclosure.

[0139] According to an embodiment of the present disclosure, the electronic device 900 may further include an input / output (I / O) interface 905 that is also connected to the bus 904. The electronic device 900 may also include one or more of the following components connected to the I / O interface 905: an input unit 906 including a keyboard, a mouse, etc.; an output unit 907 including a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker, etc.; a storage unit 908 including a hard disk, etc.; and a communication unit 909 including a network interface card such as a LAN card or a modem. The communication unit 909 performs communication processing via a network such as the Internet. A driver 910 is also connected to the I / O interface 905 as needed. Removable media 911 such as a magnetic disk, optical disk, magneto-optical disk, or semiconductor memory may be attached to the drive 910 as needed, and a computer program read from the removable media 911 is installed in the storage unit 908 as needed.

[0140] The present disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments, or may exist independently without being incorporated into the device / apparatus / system. The computer-readable storage medium stores one or more programs, and the method according to the embodiment of the present disclosure is realized by executing the one or more programs.

[0141] According to embodiments of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium, including, but not limited to, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or a suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device. For example, according to embodiments of the present disclosure, the computer-readable storage medium may include the above-mentioned ROM 902 and / or RAM 903, and / or one or more memories other than ROM 902 and RAM 903.

[0142] Embodiments of the present disclosure also include a computer program product including a computer program including program code for performing the method illustrated in the flowchart. When the computer program product is executed on a computer system, the program code is used to cause the computer system to perform the item recommendation method provided by embodiments of the present disclosure.

[0143] When the computer program is executed by the processor 901, the above-mentioned functions limited to the system / apparatus according to the embodiment of the present disclosure are performed. According to the embodiment of the present disclosure, the above-mentioned systems, devices, modules, units, etc. may be realized by computer program modules.

[0144] In one embodiment, the computer program may rely on a tangible storage medium, such as an optical storage device, a magnetic storage device, etc. In another embodiment, the computer program may be transmitted or distributed in the form of a signal over a network medium, downloaded and installed via communication unit 909, and / or installed from removable media 911. The program code contained in the computer program may be transmitted using any suitable network medium, including, but not limited to, wireless, wired, etc., or any suitable combination of the above.

[0145] In such an embodiment, the computer program may be downloaded and installed from a network via the communication unit 909 and / or installed from removable media 911. When the computer program is executed by the processor 901, the above-described functions limited to the system of the embodiment of the present disclosure are performed. According to the embodiment of the present disclosure, the above-described systems, devices, apparatuses, modules, units, etc. may be realized by computer program modules.

[0146] The embodiments of the present disclosure have been described above. However, these embodiments are for the purpose of illustration only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described individually above, this does not mean that the means of various embodiments cannot be advantageously used in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Those skilled in the art may make various substitutions and modifications without departing from the scope of the present disclosure, and all of these substitutions and modifications are intended to be included within the scope of the present disclosure.

Claims

1. 1. A detection device for scanning and detecting a subject, comprising: a detection channel through which the analyte enters and leaves the detection device; an imaging system for scanning the subject; a posture adjustment structure provided in the detection area for adjusting the posture of the subject positioned in the detection area, The imaging system includes: a radiation source disposed on one side of the detection channel for generating radiation forming a main beam plane suitable for scanning detection of at least the object; a detector disposed on the other side of the detection channel for receiving radiation that has passed through the subject; forming the detection area between the radiation source and the detector; the specimen has a detection surface; the attitude adjustment structure is capable of adjusting the attitude of the subject so that the detection plane and the main beam plane are in the same plane; a relative position between the imaging system and the subject can be changed so that the imaging system can scan and detect the subject at a plurality of angles in a plane in which the main beam plane is located; 10. A detection apparatus, characterized in that the imaging system is rotatable relative to the object in a plane in which the main beam plane lies.

2. the imaging system includes a plurality of detectors disposed opposite the radiation source, and a plurality of coplanar main beam planes are formed between the detectors and the radiation source; 2. The detection device according to claim 1, wherein the attitude adjustment structure is capable of adjusting the attitude of the subject so that the detection surface and the plurality of main beam planes are in the same plane.

3. 2. The detection device according to claim 1, wherein the posture adjustment structure is capable of moving the object in a first direction parallel to a transport direction of the object so that the object has a plurality of detection surfaces.

4. 4. The detection device according to claim 3, wherein the attitude adjustment structure is capable of positioning the subject for each detection plane so that the detection plane and the main beam plane are in the same plane.

5. the specimen includes a detection portion having the detection surface; 5. The detection device according to claim 1, wherein a ratio of an area value of a projection of the detection portion in the first direction to a size value of the detection portion in the first direction is 10 or more, and the first direction is parallel to a transport direction of the subject.

6. 6. The detection device according to claim 5, wherein a ratio of the size of the detector in the first direction to the size of the detection portion in the first direction is in the range of 1 to 8.

7. 5. The detection device according to claim 1, wherein the focus size of the radiation source is 1 mm or less.

8. The attitude adjustment structure includes: a substrate disposed to extend along the first direction and having a mounting surface suitable for mounting the subject; a first adjustment member disposed on the base, for driving the object to deflect around a second direction on the mounting surface and for driving the object to move in the first direction; at least one second adjustment member provided on the substrate for driving the subject to rotate about a third direction; 4. The detection device according to claim 3, wherein any two of the first direction, the second direction, and the third direction intersect with each other.

9. The first adjustment member is a frame slidable in the first direction relative to the base; a rotating member rotatably provided on the frame with an axis parallel to the second direction as a rotation axis, the rotating member driving the subject on the mounting surface to shift around the second direction by an external force, and driving the subject to move in the first direction by the frame; 9. The detection device of claim 8, comprising:

10. the detection area includes an entrance and an exit; The detection device includes:

9. The detection device according to claim 3, further comprising a first transmission mechanism disposed on one side of an entrance to the detection area for transporting the specimen to the detection area.

11. The first transmission mechanism includes: A drive unit; a lead screw connected to the drive device and capable of being driven by the drive device; a first slide rail whose extending direction is parallel to the extending direction of the feed screw; 11. The detection device according to claim 10, further comprising: a slide mechanism connected to the lead screw, the slide mechanism being driven by the lead screw so as to push the subject to slide on the first slide rail.

12. the imaging system includes a plurality of radiation sources and a plurality of detectors; the plurality of radiation sources are disposed opposite the plurality of detectors, respectively, thereby forming a plurality of radiation source-detector sets; a main beam plane is formed between each of the radiation source detector sets; The main beam planes of the plurality of radiation source detector sets are located on the same plane; 2. The detection device according to claim 1, wherein the attitude adjustment structure is capable of adjusting the attitude of the subject so that the detection surface and a main beam plane of the plurality of radiation source detector sets are in the same plane.

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