Detection device
By arranging the ray emitter and receiver to form a non-orthogonal beam plane with the conveying direction, the detection device achieves clearer 3D scanning, effectively reducing missed detections of dangerous goods without increasing size or cost.
Patent Information
- Application Number
- CN202420465784.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-11
AI Technical Summary
Existing X-ray security inspection devices often miss detecting dangerous goods due to orthographic projection images, which are not detailed enough, and using dual-viewing angle detection systems increases cost and size without significantly improving reliability.
The detection device arranges the ray emitter and receiver to form a beam plane that is non-orthogonal to the conveying direction, allowing for a 3D scanning effect by forming angles with multiple directions, enhancing the clarity and accuracy of the scanned image.
The solution provides a clearer 3D scanning image, reducing the likelihood of missed detections of dangerous goods while maintaining a compact device size and cost-effectiveness.
Smart Images
Figure CN222299528U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of safety detection technology, and in particular, relates to a detection device. Background Art
[0002] Most of the existing baggage and parcel security inspection technologies use X-ray transmission security inspection devices to inspect items. Security inspectors manually identify prohibited and dangerous items in the image. X-ray security inspection devices usually include: an X-ray source for generating X-ray beams; a detector for receiving X-rays after passing through an object and generating a digital level; and a mechanical transmission device for pushing the object to be inspected in a direction perpendicular to the X-ray emission and reception plane to achieve overall imaging of the object.
[0003] In existing X-ray security inspection devices, the beam plane formed by the X-ray source and the detector is at a 90-degree angle to the scanning direction, that is, it is arranged vertically. For the case where the object to be inspected, such as hand luggage, is placed parallel to the channel, the scanned image is an orthographic projection. If the largest surface of the object in the hand luggage is perpendicular to the direction in which the object is pushed, the orthographic projection image cannot show the details of the object, which can easily cause the phenomenon of dangerous goods being missed. If two sets of X-ray security inspection devices are used for dual-viewing angle detection, although this defect can be compensated, the cost is high, the security inspection system is large in size, and the reliability is not as good as that of a single-viewing angle. Utility Model Content
[0004] The embodiment of the present application provides a detection device to make the scanned image of the inspected object present a clearer 3D effect, thereby effectively avoiding the problem of missed detection of dangerous goods.
[0005] An embodiment of the present application provides a detection device, which includes: a conveying device, capable of conveying an inspected object along a first direction; and a ray transmitter and a ray receiver, the ray transmitter and the ray receiver are arranged opposite to each other, and capable of transmitting rays to the ray receiver to form a light beam plane suitable for scanning and detecting the inspected object between the ray transmitter and the ray receiver; the ray transmitter and the ray receiver are arranged so that the light beam plane forms an angle with the first direction, the second direction and the third direction, and the light beam plane is non-orthogonal to the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.
[0006] Optionally, the ray emitter and the ray receiver are arranged at intervals along a third direction; the projection of the ray emitter in the first reference plane and the projection of the ray receiver in the first reference plane are at least partially staggered along the first direction, and the first reference plane is perpendicular to the third direction.
[0007] Optionally, the radiation receiver includes at least one detector group, each detector group includes a plurality of detectors, and an arrangement direction of the plurality of detectors is inclined relative to at least two of the first direction, the second direction and the third direction.
[0008] Optionally, the detection equipment also includes: a box body, a detection channel is defined inside the box body, and the conveying device passes through the detection channel along a first direction; the first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; multiple detectors are arranged at the top or bottom of the box body, and the multiple detectors are arranged in a direction inclined relative to the first direction and the second direction.
[0009] Optionally, the detection equipment also includes: a box body, a detection channel is defined inside the box body, and the conveying device passes through the detection channel along a first direction; the first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; multiple detectors are arranged on one side of the box body along the second direction, and the multiple detectors are arranged in a direction inclined relative to the first direction and the third direction.
[0010] Optionally, the detection equipment also includes: a box body, a detection channel is defined inside the box body, and the conveying device passes through the detection channel along a first direction; the first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; a part of the multiple detectors are arranged at the top or bottom of the box body, and are arranged at intervals along a direction inclined relative to the first direction and the third direction; another part of the multiple detectors are arranged on one side of the box body along the second direction, and the multiple detectors are arranged along a direction inclined relative to the first direction and the third direction.
[0011] Optionally, the radiation emitter includes a shell and a radiation source, the shell is movably arranged along a first direction, the radiation source is rotatably arranged on the shell around a preset rotation axis, and can maintain a state relative to the radiation receiver when the shell moves to any position along the first direction.
[0012] Optionally, the detection device further includes:
[0013] The supporting mechanism and the adjusting mechanism are provided with a supporting surface which is perpendicular to the beam surface, and the ray emitter is supported on the supporting surface; the adjusting mechanism is connected to the supporting mechanism, and can cause the supporting mechanism to move along a first direction and fix the supporting mechanism at any position along the first direction.
[0014] Optionally, the angle between the light beam plane and the first direction is 45° to 75°.
[0015] Optionally, the first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; and an angle between the light beam plane and the second direction is 10° to 30°.
[0016] Optionally, there are multiple beam planes formed between the ray transmitter and the ray receiver, and the multiple beam planes do not overlap.
[0017] The detection device provided by the embodiment of the present application includes a transmission device for transmitting the inspected object along a first direction, and a ray transmitter and a ray receiver arranged relatively, and a beam plane is formed between the ray transmitter and the ray receiver, which can scan and detect the inspected object. In particular, the ray transmitter and the ray receiver are arranged so that the beam plane forms an angle with the first direction, the second direction and the third direction, and the beam plane is non-orthogonal to the first direction, wherein the first direction, the second direction and the third direction are mutually perpendicular in three-dimensional space. In other words, the beam plane forms an angle of non-90° with the first direction, and the beam plane is not parallel to the second direction, nor is it parallel to the third direction. The scanning image obtained by the detection device can clearly display the shape, size and other detailed information of the inspected object in the three dimensional directions of the first direction, the second direction and the third direction, presenting an easy-to-observe 3D effect, which is clearer and can more accurately reflect the detailed features of the inspected object, effectively reducing or even avoiding the possibility of missed inspection of dangerous goods. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a detection device provided by an embodiment of the present application in one orientation.
[0020] Figure 2 yes Figure 1 The three-dimensional structural schematic diagram of the detection device shown in another orientation.
[0021] Figure 3 yes Figure 1 Schematic diagram of the top view of the detection equipment shown.
[0022] Figure 4 yes Figure 1 The main structural diagram of the detection equipment shown.
[0023] Figure 5 yes Figure 1 A schematic diagram of the cross-sectional structure of the detection device shown along one direction.
[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of a detection device provided in another embodiment of the present application.
[0025] Figure 7 It is a schematic diagram of the top view of the structure of a detection device provided in yet another embodiment of the present application. DETAILED DESCRIPTION
[0026] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.
[0028] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0030] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, m and / or n can represent: m exists alone, m and n exist at the same time, and n exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0031] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).
[0032] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.
[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0034] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.
[0035] In the embodiment of the present application, the detection device may be a device that uses rays to detect the object to be detected. For example, the detection device may be a CT imaging device, an X-ray machine, and the like.
[0036] In order to make the imaging clearer, the radiation source and the detector can be arranged at an angle so that the beam plane formed between the two forms an angle other than 90° with the moving direction of the inspected object. In this way, the scanned orthographic projection image can display the two dimensions of the object. Although this can alleviate the problem of missed detection of dangerous goods to a certain extent, the imaging of the object is still not clear enough and still cannot effectively solve the problem of missed detection of dangerous goods.
[0037] In view of this, an embodiment of the present application provides a detection device, which cleverly arranges the relative arrangement of the ray emitter and the ray receiver so that the beam plane formed between the ray emitter and the ray receiver forms an angle with the first direction, the second direction and the third direction, and the beam plane is non-orthogonal to the first direction, wherein the first direction, the second direction and the third direction are perpendicular to each other in three-dimensional space. In other words, the beam plane forms an angle of non-90° with the first direction, and the beam plane is not parallel to the second direction or the third direction. The scanned image obtained by the detection device can clearly display the shape, size and other detailed information of the inspected object in the three dimensional directions of the first direction, the second direction and the third direction, presenting an easy-to-observe 3D effect, which is clearer and can more accurately reflect the detailed features of the inspected object, effectively reducing or even avoiding the possibility of missed inspection of dangerous goods.
[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.
[0039] Figure 1 is a schematic diagram of the three-dimensional structure of a detection device provided by an embodiment of the present application in one orientation, Figure 2 yes Figure 1 The three-dimensional structural diagram of the detection device shown in another orientation, Figure 3 yes Figure 1 The schematic diagram of the top view of the detection equipment shown, Figure 4 yes Figure 1 The main structural diagram of the detection equipment shown is as follows, Figure 5 yes Figure 1 The schematic diagram of the cross-sectional structure of the detection device along one direction is shown. Figures 1 to 5 The detection device 1 includes a conveying device 10, a ray transmitter 21 and a ray receiver 22. The conveying device 10 can convey the inspected object along a first direction X. The ray transmitter 21 is arranged opposite to the ray receiver 22, and can transmit rays to the ray receiver 22 to form a beam plane 23 suitable for scanning and detecting the inspected object between the ray transmitter 21 and the ray receiver 22. The ray transmitter 21 and the ray receiver 22 are arranged so that the beam plane 23 forms an angle with the first direction X, the second direction Y and the third direction Z, and the beam plane 23 is non-orthogonal to the first direction X, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.
[0040] The ray emitter 21 may include at least one ray source 211, and the ray receiver 22 may include at least one set of detectors. The at least one ray source 211 is used to emit rays to at least one set of detectors, thereby forming a beam plane between the ray emitter 21 and the ray receiver 22. Optionally, the ray source 211 may be an X-ray source capable of emitting X-rays.
[0041] The rays emitted by the ray source 211 are collimated by the collimating structure to form a beam plane 23, which is roughly a fan-shaped plane. A set of detectors may include multiple detectors 221, which are distributed in the plane where the beam plane 23 is located, so that the rays in the beam plane 23 are irradiated vertically to each detector 221.
[0042] The detection device 1 further includes a box 30, and a detection channel 31 is defined inside the box 30. The ray emitter 21 and the ray receiver 22 are both arranged inside the box 30, and the beam surface formed between the ray emitter 21 and the ray receiver 22 passes through the detection channel 31, so as to scan and detect the inspected object passing through the detection channel 31.
[0043] The conveying device 10 may pass through the detection channel 31 along the first direction X, so that the inspected object passes through the detection channel 31 and is scanned and inspected by the light beam surface 23 .
[0044] The conveying device 10 may include a conveyor belt, which is used to drive the inspected objects placed thereon to move along the first direction X.
[0045] The beam plane 23 is not parallel to any of the first direction X, the second direction Y and the third direction Z. The first preset angle formed by the beam plane 23 and the first direction X is a non-90° angle, and the beam plane 23 is not perpendicular to the first direction X. The beam plane 23 forms angles with both the second direction Y and the third direction Z.
[0046] The detection device 1 provided in the embodiment of the present application includes a conveying device 10 for conveying the inspected object along the first direction X, and a ray emitter 21 and a ray receiver 22 arranged relatively, and a beam plane 23 is formed between the ray emitter 21 and the ray receiver 22, which can scan and detect the inspected object. In particular, the ray emitter 21 and the ray receiver 22 are arranged so that the beam plane 23 forms an angle with the first direction X, the second direction Y and the third direction Z, and the beam plane 23 is non-orthogonal to the first direction X, wherein the first direction X, the second direction Y and the third direction Z are mutually perpendicular in three-dimensional space. In other words, the beam plane 23 forms an angle of non-90° with the first direction X, and the beam plane 23 is not parallel to the second direction Y, nor is it parallel to the third direction Z. The scanning result obtained by the detection device 1 can clearly display the shape, size and other detailed information of the inspected object in the three dimensional directions of the first direction X, the second direction Y and the third direction Z, presenting an easy-to-observe 3D effect, which is clearer and can more accurately reflect the detailed features of the inspected object, effectively reducing or even avoiding the possibility of missed inspection of dangerous goods.
[0047] Optionally, the arrangement relationship between the ray receiver 22 and the ray emitter 21 can be formed in the following manner: on the basis that the light beam plane formed between the traditional ray receiver 22 and the ray emitter 21 is perpendicular to the first direction X, the ray receiver 22 is rotated around a first rotation axis parallel to the second direction Y by an angle less than 90°, and then the ray receiver 22 is rotated around a second rotation axis parallel to the third direction Z by an angle less than 90°, so that the light beam plane 23 formed between the ray receiver 22 and the ray emitter 21 is not perpendicular to the first direction X, and is not parallel to the second direction Y and the third direction Z.
[0048] In some embodiments, the ray emitter 21 and the ray receiver 22 are arranged at intervals along the third direction Z. The projection of the ray emitter 21 in the first reference plane and the projection of the ray receiver 22 in the first reference plane are at least partially staggered along the first direction X, and the first reference plane is perpendicular to the third direction Z.
[0049] The projection of the ray emitter 21 in the first reference plane and the projection of the ray receiver 22 in the first reference plane may partially overlap, partially stagger, or completely stagger along the first direction X. When the projection of the ray emitter 21 in the first reference plane and the projection of the ray receiver 22 in the first reference plane may partially overlap or partially stagger along the first direction X, the inclination angle of the beam plane 23 relative to the second reference plane is small, and the second reference plane is perpendicular to the first direction X. When the projection of the ray emitter 21 in the first reference plane and the projection of the ray receiver 22 in the first reference plane are completely staggered along the first direction X, the inclination angle of the beam plane 23 relative to the second reference plane is large.
[0050] The projection of the ray emitter 21 in the first reference plane and the projection of the ray receiver 22 in the first reference plane are at least partially offset from each other along the first direction X, so that the beam plane 23 formed between the ray emitter 21 and the ray receiver 22 is not perpendicular to the first direction X. When the inspected object passes through the beam plane 23, even if the size of the inspected object along the first direction X is small, the size of its projection in the plane perpendicular to the beam plane 23 is large, so the inspected object can be clearly imaged in the first direction X.
[0051] In some embodiments, the radiation receiver 22 includes at least one detector group, each detector group includes a plurality of detectors 221, and the arrangement direction of the plurality of detectors 221 is inclined relative to at least two of the first direction X, the second direction Y, and the third direction Z.
[0052] The multiple detectors 221 may be arranged roughly in one or two straight lines so as to be in the same plane with the ray source 211 of the ray emitter 21 , thereby forming a beam plane 23 between the ray source 211 and the multiple detectors 221 .
[0053] The arrangement direction of the multiple detectors 221 is tilted relative to the first direction X, which means that the multiple detectors 221 are not arranged along the first direction X, and the arrangement direction of the multiple detectors 221 is not parallel to the first direction X, but forms an angle with the first direction X. Similarly, the arrangement direction of the multiple detectors 221 is tilted relative to the second direction Y, which means that the multiple detectors 221 are not arranged along the second direction Y, and the arrangement direction of the multiple detectors 221 is not parallel to the second direction Y, but forms an angle with the second direction Y. Similarly, the arrangement direction of the multiple detectors 221 is tilted relative to the third direction Z, which means that the multiple detectors 221 are not arranged along the third direction Z, and the arrangement direction of the multiple detectors 221 is not parallel to the third direction Z, but forms an angle with the third direction Z.
[0054] The multiple detectors 221 are neither arranged along the first direction X, nor along the second direction Y, nor along the third direction Z. The arrangement directions of the multiple detectors 221 may form angles with at least two of the first direction X, the second direction Y and the third direction Z, respectively.
[0055] The arrangement direction of the multiple detectors 221 is inclined relative to at least two of the first direction X, the second direction Y and the third direction Z, so that the beam plane formed by the multiple detectors 221 and the ray emitter 21 is neither parallel to the second direction Y, nor parallel to the third direction Z, nor perpendicular to the first direction X.
[0056] In some embodiments, the detection device 1 further includes a box 30 , the interior of the box 30 defines a detection channel 31 , and the conveying device 10 passes through the detection channel 31 along the first direction X so that the inspected object conveyed by the conveying device 10 passes through the detection channel 31 .
[0057] Optionally, the ray emitter 21 and the ray receiver 22 are both disposed inside the box 30 , and a light beam surface 23 formed between the ray emitter 21 and the ray receiver 22 passes through the detection channel 31 , thereby scanning and detecting the inspected object passing through the detection channel 31 .
[0058] Further, the first direction X and the second direction Y are parallel to the horizontal direction, and the third direction Z is parallel to the vertical direction. A portion of the multiple detectors 221 is disposed at the top or bottom of the box 30, and is arranged at intervals along a direction that is inclined relative to both the first direction X and the third direction Z; another portion of the multiple detectors 221 is disposed on one side of the box 30 along the second direction Y, and the multiple detectors 221 are arranged along a direction that is inclined relative to both the first direction X and the third direction Z.
[0059] Optionally, the ray source 211 of the ray emitter 21 may be disposed at the bottom of the box 30 to be disposed opposite to the multiple detectors 221 located at the side of the box 30. Optionally, the ray source 211 may also be disposed at the top of the box 30 to be disposed opposite to the multiple detectors 221 located at the side of the box 30.
[0060] A portion of the multiple detectors 221 is arranged in a straight line at the top or bottom of the box 30, and the straight line is inclined relative to both the first direction X and the second direction Y, and forms a first angle α1 and a second angle α2 with the first direction X and the second direction Y, respectively, and the sum of the first angle α1 and the second angle α2 is 90°. Another portion of the multiple detectors 221 can be arranged in a straight line on one side of the box 30 along the second direction Y, and the straight line is inclined relative to both the first direction X and the third direction Z, and forms a third angle α3 and a fourth angle α4 with the first direction X and the third direction Z, respectively, and the sum of the third angle α3 and the fourth angle α4 can be 90°.
[0061] In the embodiment of the present application, multiple detectors 221 are dispersedly arranged at the bottom or top of the box 30 and the side of the box 30, so that a larger beam surface 23 can be formed between the multiple detectors 221 and the ray source 211, avoiding the occurrence of undetectable dead angle positions. In addition, in the embodiment of the present application, the beam surface 23 between the ray emitter 21 and the ray receiver 22 is not perpendicular to the first direction X and intersects with the second direction Y and the third direction Z by simply adjusting the arrangement of the multiple detectors 221, thereby simplifying the structure of the detection device 1 and reducing the difficulty of structural design.
[0062] Figure 6is a schematic diagram of the three-dimensional structure of a detection device provided in another embodiment of the present application. Figure 6 , a plurality of detectors 221 may be disposed at the top or the bottom of the housing 30 , and the plurality of detectors 221 are arranged along a direction inclined relative to both the first direction X and the second direction Y.
[0063] Optionally, the plurality of detectors 221 may be disposed on the top of the box 30, and in this case, the radiation source 211 of the radiation emitter 21 may be disposed on the bottom of the box 30 to be arranged opposite to the plurality of detectors 221 located on the top of the box 30. Preferably, the plurality of detectors 221 are disposed above the conveyor 10, and the radiation source 211 may be disposed below the conveyor 10, so that the beam surface 23 formed between the radiation source 211 and the plurality of detectors 221 passes through the inspected object on the conveyor 10.
[0064] Optionally, the plurality of detectors 221 may also be disposed at the bottom of the box 30, in which case the radiation source 211 of the radiation emitter 21 may be disposed at the top of the box 30 to be arranged opposite to the plurality of detectors 221 located at the bottom of the box 30. Preferably, the radiation source 211 may be disposed above the conveyor 10, and the plurality of detectors 221 may be disposed below the conveyor 10, so that the beam plane 23 formed between the radiation source 211 and the plurality of detectors 221 passes through the inspected object on the conveyor 10.
[0065] The plurality of detectors 221 may be arranged in a straight line at the top or bottom of the housing 30, and the straight line is inclined relative to both the first direction X and the second direction Y. The arrangement directions of the plurality of detectors 221 respectively form a fifth angle and a sixth angle with the first direction X and the second direction Y. Since the first direction X and the second direction Y are perpendicular, the sum of the fifth angle and the sixth angle may be 90°.
[0066] The plurality of detectors 221 may be disposed at intervals along the arrangement direction thereof.
[0067] In the embodiment of the present application, the arrangement direction of the multiple detectors 221 is set to be inclined with respect to the first direction X and the second direction Y. By simply adjusting the arrangement of the multiple detectors 221, the beam plane 23 between the ray emitter 21 and the ray receiver 22 can be made not perpendicular to the first direction X, and intersect with the second direction Y and the third direction Z, thereby simplifying the structure of the detection device 1 and reducing the difficulty of structural design.
[0068] Figure 7 is a schematic diagram of a top view of a detection device provided by another embodiment of the present application. Figure 7 , a plurality of detectors 221 are disposed on one side of the box body 30 along the second direction Y, and the plurality of detectors 221 are arranged along a direction inclined relative to both the first direction X and the third direction Z.
[0069] Optionally, the ray source 211 of the ray emitter 21 may be disposed at the bottom of the box 30 to be disposed opposite to the multiple detectors 221 located at the side of the box 30. Optionally, the ray source 211 may also be disposed at the top of the box 30 to be disposed opposite to the multiple detectors 221 located at the side of the box 30.
[0070] The plurality of detectors 221 may be arranged in a straight line on one side of the box body 30 along the second direction Y, and the straight line is inclined relative to both the first direction X and the third direction Z. The arrangement directions of the plurality of detectors 221 respectively form a seventh angle and an eighth angle with the first direction X and the third direction Z. Since the first direction X and the third direction Z are perpendicular to each other, the sum of the seventh angle and the eighth angle may be 90°.
[0071] The plurality of detectors 221 may be disposed at intervals along the arrangement direction thereof.
[0072] In the embodiment of the present application, the arrangement direction of the multiple detectors 221 is set to be inclined with respect to the first direction X and the third direction Z. By simply adjusting the arrangement of the multiple detectors 221, the beam plane 23 between the ray emitter 21 and the ray receiver 22 can be made not perpendicular to the first direction X and intersect with the second direction Y and the third direction Z, thereby simplifying the structure of the detection device 1 and reducing the difficulty of structural design.
[0073] In some embodiments, the radiation emitter 21 includes a housing 212 and a radiation source 211. The housing 212 is movably disposed along a first direction X, and the radiation source 211 is rotatably disposed on the housing 212 around a preset rotation axis, and can remain in a state relative to the radiation receiver 22 when the housing 212 moves to any position along the first direction X.
[0074] Optionally, the preset rotation axis of the ray source 211 may extend along the second direction Y.
[0075] The state of the radiation source 211 can be maintained by a retaining member or a fixing member, which may be, for example, a screw, a positioning pin, a nitrogen spring, or the like.
[0076] The housing 212 is movably arranged along the first direction X, and the relative positions of the radiation source 211 and the radiation receiver 22 in the first direction X can be changed. After the position of the housing 212 along the first direction X is changed, the radiation source 211 is rotated to a state opposite to the radiation receiver 22, and the radiation source 211 can be maintained in this state to ensure that a beam plane 23 can be formed between the radiation source 211 and the radiation receiver 22. After the housing 212 moves along the first direction X, the angle between the beam plane 23 and the first direction X changes, achieving the purpose of adjusting the angle between the beam plane 23 and the first direction X, so that the detection device 1 can be flexibly used for the detection of objects of various types and shapes, and the possibility of missed detection is low.
[0077] In some embodiments, the detection device 1 further includes a supporting mechanism 40 and an adjusting mechanism 50, wherein the supporting mechanism 40 has a supporting surface 41, the supporting surface 41 is perpendicular to the beam surface 23, and the ray emitter 21 is supported on the supporting surface 41. The adjusting mechanism 50 is connected to the supporting mechanism 40, and can cause the supporting mechanism 40 to move along the first direction X and fix the supporting mechanism 40 at any position along the first direction X.
[0078] The ray emitter 21 may be fixedly supported on the support surface 41 , or may be movably supported on the support surface 41 relative to the support surface 41 .
[0079] Optionally, the adjustment mechanism 50 may be a mechanical adjustment mechanism or an electrically controlled adjustment mechanism, as long as it can drive the support mechanism 40 to move along the first direction X.
[0080] The supporting mechanism 40 may be a supporting block.
[0081] Optionally, the adjustment mechanism 50 may include a rotatable adjustment member, the rotation axis of which is parallel to the first direction X. The adjustment member may include a threaded rod and a head arranged along the first direction X, and the support mechanism 40 is threadedly connected to the threaded rod. When the threaded rod is rotated to rotate the head, the support mechanism 40 may move along the first direction X.
[0082] In some embodiments, the angle between the light beam surface 23 and the first direction X is 45° to 75°.
[0083] Optionally, the angle between the beam surface 23 and the first direction X can be 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 55°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74° or 75°, etc.
[0084] When the angle between the beam surface 23 and the first direction X is between 45° and 75°, a clearer scanning result can be obtained and the length of the detection device along the first direction X can be controlled within a suitable range, thus achieving a balance between the scanning result and structural rationality.
[0085] If the angle between the beam surface 23 and the first direction X is too small, for example, less than 45°, the interval between the ray emitter 21 and the ray receiver 22 along the first direction X is large, resulting in the detection device 1 being too long along the first direction X, occupying more space, which is not conducive to use and transportation.
[0086] If the angle between the beam plane 23 and the first direction X is too large, for example, greater than 75°, the beam plane 23 is nearly perpendicular to the first direction X, the three-dimensional effect of the scanned image is not obvious, and it is not easy to observe, and there is still a large risk of missed detection.
[0087] In some embodiments, the first direction X and the second direction Y are parallel to the horizontal direction, and the third direction Z is parallel to the vertical direction. The angle between the beam surface 23 and the second direction Y is 10° to 30°.
[0088] Optionally, the angle between the beam surface 23 and the second direction Y can be 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29° or 30°.
[0089] The angle between the beam surface 23 and the second direction Y is greater than 10° and less than 30°, which can make the beam surface 23 not parallel to the second direction Y and set the degree of deflection of the beam surface 23 relative to the second direction Y within a suitable range.
[0090] If the angle between the beam surface 23 and the second direction Y is too large, for example greater than 30°, it will also cause the interval between the ray emitter 21 and the ray receiver 22 along the first direction X to be larger, thereby causing the length of the detection device 1 along the first direction X to be too large, occupying more space, which is not conducive to use and transportation.
[0091] If the angle between the beam plane 23 and the second direction Y is too small, for example, less than 10°, the deflection angle of the beam plane 23 is not obvious, the three-dimensional effect of the scanned image is not obvious, and it is not easy to observe, and there is still a great risk of missed detection.
[0092] The first direction X is parallel to the horizontal direction. The conveying device 10 conveys the inspected objects along the horizontal direction. The inspected objects can be directly placed on the conveying device 10 , which is beneficial to simplifying the structure of the conveying device 10 and supporting and transporting the inspected objects.
[0093] In some embodiments, there are multiple beam planes 23 formed between the ray emitter 21 and the ray receiver 22, and the beam planes 23 do not overlap.
[0094] Optionally, the plurality of beam planes 23 may be parallel to each other.
[0095] Optionally, a plurality of beam surfaces 23 may be arranged along the first direction X at intervals.
[0096] The ray receiver 22 includes a plurality of detector groups, and a beam surface 23 is formed between the ray emitter 21 and each detector group.
[0097] The ray emitter 21 may include a ray source 211. The light emitted by the ray source 211 is collimated by multiple collimation mechanisms to form multiple beam planes 23 that are respectively irradiated to multiple detector groups, thereby simplifying the structure and reducing the cost.
[0098] The ray emitter 21 may also include a plurality of ray sources 211 , each ray source 211 corresponding to one detector group or a plurality of detector groups emits light, thereby forming one or more beam surfaces 23 .
[0099] The embodiment of the present application forms a plurality of non-overlapping beam surfaces 23, which can perform multi-faceted or multi-directional detection on the object to be inspected, further improving the detection accuracy and reducing the possibility of missed detection. In addition, the plurality of beam surfaces 23 do not overlap with each other, and the scanning detection between the beam surfaces 23 does not affect each other.
[0100] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A detection device, characterized in that: include: A conveying device capable of conveying the inspected object along a first direction; as well as A ray transmitter and a ray receiver, wherein the ray transmitter is arranged opposite to the ray receiver and can transmit rays to the ray receiver so as to form a beam surface suitable for scanning and detecting the inspected object between the ray transmitter and the ray receiver; The ray transmitter and the ray receiver are arranged so that the beam plane forms an angle with the first direction, the second direction and the third direction, and the beam plane is non-orthogonal to the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.
2. The detection device according to claim 1, characterized in that: The ray transmitters and the ray receivers are arranged at intervals along the third direction; A projection of the radiation transmitter in a first reference plane and a projection of the radiation receiver in the first reference plane are at least partially offset from each other along the first direction, and the first reference plane is perpendicular to the third direction.
3. The detection device according to claim 1, characterized in that: The radiation receiver includes at least one detector group, each of the detector groups includes a plurality of detectors, and an arrangement direction of the plurality of detectors is inclined relative to at least two of the first direction, the second direction, and the third direction.
4. The detection device according to claim 3, characterized in that: Also includes: A box body, wherein a detection channel is defined inside the box body, and the conveying device passes through the detection channel along the first direction; The first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; the multiple detectors are arranged at the top or bottom of the box, and the multiple detectors are arranged in a direction inclined relative to the first direction and the second direction.
5. The detection device according to claim 3, characterized in that: Also includes: A box body, wherein a detection channel is defined inside the box body, and the conveying device passes through the detection channel along the first direction; The first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; the multiple detectors are arranged on one side of the box along the second direction, and the multiple detectors are arranged along a direction inclined relative to the first direction and the third direction.
6. The detection device according to claim 3, characterized in that: Also includes: A box body, wherein a detection channel is defined inside the box body, and the conveying device passes through the detection channel along the first direction; The first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; a part of the multiple detectors are arranged at the top or bottom of the box, and are arranged at intervals along a direction inclined relative to the first direction and the third direction; another part of the multiple detectors are arranged on one side of the box along the second direction, and the multiple detectors are arranged along a direction inclined relative to the first direction and the third direction.
7. The detection device according to claim 1, characterized in that: The radiation emitter includes a shell and a radiation source. The shell is movably arranged along the first direction. The radiation source is rotatably arranged on the shell around a preset rotation axis and can maintain a relative state with the radiation receiver when the shell moves to any position along the first direction.
8. The detection device according to claim 7, characterized in that: Also includes: A supporting mechanism and an adjusting mechanism, wherein the supporting mechanism has a supporting surface, the supporting surface is perpendicular to the beam surface, and the ray emitter is supported on the supporting surface; The adjustment mechanism is connected to the support mechanism, and can cause the support mechanism to move along the first direction and fix the support mechanism at any position along the first direction.
9. The detection device according to claim 1, characterized in that: The angle between the light beam plane and the first direction is 45° to 75°.
10. The detection device according to claim 1, characterized in that: The first direction and the second direction are both parallel to the horizontal direction, and the third direction is parallel to the vertical direction; and The angle between the light beam plane and the second direction is 10° to 30°.
11. The detection device according to claim 1, characterized in that: There are multiple beam planes formed between the ray emitter and the ray receiver, and the multiple beam planes do not overlap.