Safety inspection device

Abstract

The safety inspection device at least comprises a first inspection channel and a second inspection channel which are adjacently arranged, and the first inspection channel comprises a first radiation source and a second radiation source which have different scanning visual angles, and a corresponding first detector and a corresponding second detector. The first ray source has a first scanning surface, and the second ray source has a second scanning surface. The second inspection channel comprises a third ray source and a fourth ray source which have different scanning visual angles, and a third detector and a fourth detector which correspond to the third ray source and the fourth ray source. The third ray source has a third scanning surface, and the fourth ray source has a fourth scanning surface. The first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are not coplanar in the extension direction of the inspection channel, so that the problem of ray crosstalk among the first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface can be solved, and the imaging quality is improved.

Description

Technical Field

[0001] The present application relates to the field of security inspection technology, and in particular to a security inspection device. Background Art

[0002] Currently, security requirements for public spaces are increasing, both domestically and internationally. X-ray security inspection equipment is widely deployed in key locations such as rail transit, airports, and customs. These devices enable rapid, contactless security checks on packages, identify suspicious objects, and maintain public safety. Due to space constraints, public venues like airports require compact dual-channel security inspection systems that can operate independently. To address the impact of object shape and placement on security inspections, dual-viewing angle security inspection systems are now widely used. These dual-channel systems actually consist of two channels, each with two imaging devices operating from different viewing angles.

[0003] Because the two channels in a dual-channel security inspection machine are closely spaced, crosstalk occurs between the different channels and viewing angles, which reduces the quality of the radiation image and affects the accurate detection of suspicious objects. Therefore, it is necessary to optimize the structure of the existing dual-channel security inspection equipment to ensure the accuracy of security inspections. Summary of the Invention

[0004] The present application provides a safety inspection device to solve at least some of the problems in the related art.

[0005] The security inspection device provided in this application includes at least a first inspection channel and a second inspection channel arranged adjacent to each other, wherein:

[0006] The first inspection channel includes a first ray source and a second ray source with different scanning angles, and corresponding first and second detectors; the first ray source has a first scanning surface, and the second ray source has a second scanning surface;

[0007] The second inspection channel includes a third ray source and a fourth ray source with different scanning angles, and corresponding third and fourth detectors; the third ray source has a third scanning surface, and the fourth ray source has a fourth scanning surface;

[0008] The first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are not coplanar in the extension direction of the inspection channel.

[0009] Optionally, the second scanning surface and the fourth scanning surface are scanning surfaces having the same scanning angle, and the first scanning surface and the third scanning surface are scanning surfaces having the same scanning angle; or

[0010] The second scanning surface and the fourth scanning surface are scanning surfaces with the same scanning angle, and the first scanning surface and the third scanning surface are scanning surfaces with different scanning angles.

[0011] Optionally, the first scanning surface and the third scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and are both located on the same side of the second scanning surface and the fourth scanning surface that is closer.

[0012] Optionally, the first scanning surface and the second scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and the second scanning surface is located between the first scanning surface and the third scanning surface, the fourth scanning surface is located on the side of the third scanning surface away from the second scanning surface, or the fourth scanning surface is located on the side of the first scanning surface away from the second scanning surface.

[0013] Optionally, the second scanning surface and the fourth scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and are both located between the first scanning surface and the third scanning surface.

[0014] Optionally, the first scanning surface and the third scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and the first scanning surface and the third scanning surface are both located between the second scanning surface and the fourth scanning surface.

[0015] Optionally, the first scanning surface and the second scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and the first scanning surface is located between the second scanning surface and the fourth scanning surface, the third scanning surface is located on the side of the fourth scanning surface away from the first scanning surface, or the third scanning surface is located on the side of the second scanning surface away from the first scanning surface.

[0016] Optionally, the first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are all perpendicular to the extension direction of the inspection channel; or

[0017] At least one of the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface forms a preset angle with the extension direction of the inspection channel.

[0018] Optionally, for the first inspection channel, if the second ray source is a side-view ray source, the first ray source is a top-view ray source or a bottom-view ray source;

[0019] For the second inspection channel, if the fourth ray source is a side-view ray source, the third ray source is a top-view ray source or a bottom-view ray source.

[0020] Optionally, the intervals between adjacent scanning surfaces among the first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are equal.

[0021] The security inspection device provided in the present application comprises a first inspection channel including a first radiation source and a second radiation source with different scanning angles, wherein the first radiation source has a first scanning surface and the second radiation source has a second scanning surface, and the second inspection channel includes a third radiation source and a fourth radiation source with different scanning angles, wherein the third radiation source has a third scanning surface and the fourth radiation source has a fourth scanning surface. Furthermore, the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface are all non-coplanar in the direction in which the inspection channel extends. This avoids radiation crosstalk between the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface, thereby improving imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 This is a schematic structural diagram of a safety inspection device according to an embodiment of the present application;

[0024] Figure 2 This is a schematic structural diagram of a safety inspection device according to another embodiment of the present application;

[0025] Figure 3 This is a structural diagram of a safety inspection device shown in yet another embodiment of the present application;

[0026] Figure 4 This is a structural diagram of a safety inspection device shown in another embodiment of the present application;

[0027] Figure 5 This is a schematic structural diagram of a safety inspection device shown in another embodiment of the present application.

[0028] Figure numerals: security inspection device 10, first inspection channel 20, second inspection channel 30, first ray source 23, second ray source 25, first detector 24, second detector 26, first scanning surface 21, second scanning surface 22, third ray source 33, fourth ray source 35, third detector 34, fourth detector 36, third scanning surface 31, fourth scanning surface 32. DETAILED DESCRIPTION

[0029] The present application provides a safety inspection device. The safety inspection device of the present application is described in detail below with reference to the accompanying drawings. The features of the following embodiments and implementations may be combined with each other unless they conflict.

[0030] An embodiment of the present application provides a security inspection device, comprising at least a first inspection channel and a second inspection channel arranged adjacent to each other, wherein the first inspection channel comprises a first ray source and a second ray source having different scanning angles, and corresponding first and second detectors, i.e., the first detector is used to receive rays emitted by the first ray source, and the second detector is used to receive rays emitted by the second ray source. The first ray source has a first scanning surface, and the second ray source has a second scanning surface. The second inspection channel comprises a third ray source and a fourth ray source having different scanning angles, and corresponding third and fourth detectors, i.e., the third detector is used to receive rays emitted by the third ray source, and the fourth detector is used to receive rays emitted by the fourth ray source. The third ray source has a third scanning surface, and the fourth ray source has a fourth scanning surface. The first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface are not coplanar in the extension direction of the inspection channel, thereby avoiding mutual interference between the rays.

[0031] The security inspection device provided by the present application comprises a first inspection channel including a first radiation source and a second radiation source with different scanning angles, the first radiation source having a first scanning surface, the second radiation source having a second scanning surface, and the second inspection channel including a third radiation source and a fourth radiation source with different scanning angles, the third radiation source having a third scanning surface, and the fourth radiation source having a fourth scanning surface, wherein the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface are all non-coplanar in the extension direction of the inspection channel. The first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface are all non-coplanar in the extension direction of the inspection channel, thereby resolving the radiation crosstalk problem between the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface, thereby improving imaging quality.

[0032] Moreover, the first scanning surface and the second scanning surface corresponding to the first inspection channel, and the third scanning surface and the fourth scanning surface corresponding to the second inspection channel are not coplanar. Even if no additional shielding device is added between the two channels, the problem of mutual interference of rays between adjacent inspection channels and resulting in poor imaging effects can be avoided.

[0033] Please refer to Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of a safety inspection device 10 according to an embodiment of the present application. Figure 1 As shown, the safety inspection device 10 includes at least a first inspection channel 20 and a second inspection channel 30 that are adjacently arranged.

[0034] exist Figure 1In the illustrated embodiment, the security inspection device 10 includes a first inspection channel 20 and a second inspection channel 30, which are adjacently arranged. The first inspection channel 20 and the second inspection channel 30 are arranged in parallel. In other embodiments, the security inspection device 10 may also include three or more inspection channels. In the embodiment of the present application, an inspection channel refers to a channel that can perform security inspections on items such as parcels and luggage to determine whether they contain dangerous goods or prohibited items.

[0035] The first inspection channel 20 includes a first radiation source 23 and a second radiation source 25 with different scanning angles, as well as corresponding first and second detectors 24 and 26. By including the first and second radiation sources 23 and 25 with different scanning angles, objects passing through the first inspection channel 20 can be scanned from two different angles, mitigating the effects of object shape and placement on safety detection and improving the accuracy of detection results. The first radiation source 23 has a first scanning surface 21, and the second radiation source 25 has a second scanning surface 22.

[0036] Second inspection channel 30 includes a third radiation source 33 and a fourth radiation source 35 with different scanning angles, as well as corresponding third and fourth detectors 34 and 36. By including third and fourth radiation sources 33 and 35 with different scanning angles, objects passing through second inspection channel 30 can be scanned from two different angles, improving the accuracy of detection results. Third radiation source 33 has a third scanning surface 31, and fourth radiation source 35 has a fourth scanning surface 32.

[0037] The first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32 are not coplanar in the direction of extension of the inspection channel. This avoids radiation crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32, thereby improving imaging quality.

[0038] The first inspection channel 20 includes a first radiation source 23 and a second radiation source 25 with different scanning angles. The second inspection channel 30 includes a third radiation source 33 and a fourth radiation source 35 with different scanning angles. For the first inspection channel 20, if the second radiation source 25 is a side-view radiation source, the first radiation source 23 can be a top-view radiation source or a bottom-view radiation source. Alternatively, if the first radiation source 23 is a side-view radiation source, the second radiation source 25 can be a top-view radiation source or a bottom-view radiation source. This achieves scanning from two angles, improving the accuracy of the inspection results.

[0039] For the second inspection channel 30, if the fourth radiation source 35 is a side-view radiation source, the third radiation source 33 can be a top-view radiation source or a bottom-view radiation source. Alternatively, if the third radiation source 33 is a side-view radiation source, the fourth radiation source 35 can be a top-view radiation source or a bottom-view radiation source. This achieves scanning from two viewing angles, improving the accuracy of the inspection results.

[0040] In the embodiments of this application, a side-view radiation source refers to a radiation source deployed at the side of an inspection channel and emitting radiation to scan an object; a top-view radiation source refers to a radiation source deployed at the top of an inspection channel and emitting radiation to scan an object; and a bottom-view radiation source refers to a radiation source deployed at the bottom of an inspection channel and emitting radiation to scan an object. The terms "side," "top," and "bottom" of an inspection channel refer to different relative positions within the inspection channel.

[0041] exist Figure 1 In the illustrated embodiment, the first radiation source 23 within the first inspection channel 20 is a top-view radiation source, and the second radiation source 25 is a side-view radiation source. The third radiation source 33 within the second inspection channel 30 is a top-view radiation source, and the fourth radiation source 35 is a side-view radiation source. This achieves scanning from two perspectives, improving the accuracy of the detection results.

[0042] In some embodiments, the second scanning surface 22 and the fourth scanning surface 32 are scanning surfaces having the same scanning angle, and the first scanning surface 21 and the third scanning surface 31 are scanning surfaces having the same scanning angle. Alternatively, the second scanning surface 22 and the fourth scanning surface 32 may both be side-view scanning surfaces, while the first scanning surface 21 and the third scanning surface 31 may both be top-view scanning surfaces. Alternatively, the second scanning surface 22 and the fourth scanning surface 32 may both be side-view scanning surfaces, while the first scanning surface 21 and the third scanning surface 31 may both be bottom-view scanning surfaces.

[0043] exist Figure 1 In the illustrated embodiment, the second scanning surface 22 and the fourth scanning surface 32 are both side-view scanning surfaces, and the first scanning surface 21 and the third scanning surface 31 are both top-view scanning surfaces.

[0044] The radiation source corresponding to the side-view scanning plane is located on one side of the inspection channel in the width direction y relative to the detector. The radiation source corresponding to the top-view scanning plane is located at the top of the inspection channel in the height direction z relative to the detector. The radiation source corresponding to the bottom-view scanning plane is located at the bottom of the inspection channel in the height direction z relative to the detector.

[0045] In some other embodiments, the second scanning surface 22 and the fourth scanning surface 32 have the same scanning angle, while the first scanning surface 21 and the third scanning surface 31 have different scanning angles. For example, the second scanning surface 22 and the fourth scanning surface 32 may both be side-view scanning surfaces, while one of the first scanning surface 21 and the third scanning surface 31 may be a top-view scanning surface and the other a bottom-view scanning surface. This application is not limited to this.

[0046] In some embodiments, the first scanning surface 21, the second scanning surface 22, the third scanning surface 31 and the fourth scanning surface 32 are all perpendicular to the extension direction of the inspection channel. In other embodiments, at least one of the first scanning surface 21, the second scanning surface 22, the third scanning surface 31 and the fourth scanning surface 32 forms a preset angle with the extension direction of the inspection channel, and the value of the preset angle can be determined according to different inspection requirements or imaging requirements. This application does not impose any restrictions on this. It is only limited that the first scanning surface 21, the second scanning surface 22, the third scanning surface 31 and the fourth scanning surface 32 are not coplanar in the extension direction of the inspection channel to avoid ray crosstalk between the four scanning surfaces and improve detection accuracy. The scanning surface forms a preset angle with the extension direction of the inspection channel, which can form a detection image with a three-dimensional display effect.

[0047] In some optional embodiments, the spacing between adjacent scanning surfaces among the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32 is equal. This can prevent the spacing between some adjacent scanning surfaces from being too large while the spacing between others is too small, thereby resolving the radiation crosstalk problem caused by the small spacing between adjacent scanning surfaces. Of course, adjacent scanning surfaces can also be arranged at unequal intervals.

[0048] In some embodiments, the first scanning surface 21 and the second scanning surface 22 are arranged adjacent to each other in the extension direction of the inspection channel, and the second scanning surface 22 is located between the first scanning surface 21 and the third scanning surface 31, the fourth scanning surface 32 is located on the side of the third scanning surface 31 away from the second scanning surface 22, or the fourth scanning surface 32 is located on the side of the first scanning surface 21 away from the second scanning surface 22.

[0049] Please refer again Figure 1 ,exist Figure 1 In the illustrated embodiment, from one end of the inspection channel to the other end, there are, in order, the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32. The first scanning surface 21 and the second scanning surface 22 are located in the first channel, while the third scanning surface 31 and the fourth scanning surface 32 are located in the second channel. This prevents crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32.

[0050] In some embodiments, the first scanning surface 21 and the third scanning surface 31 are arranged adjacent to each other in the extension direction of the inspection channel and are both located on the same side of the closer one of the second scanning surface 22 and the fourth scanning surface 32. In this way, crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32 can be avoided.

[0051] Please refer to Figure 2 , Figure 2 for Figure 2 This is a structural diagram of a safety inspection device 10 shown in another embodiment of the present application. Figure 2 In the illustrated embodiment, the first scanning surface 21, the third scanning surface 31, the second scanning surface 22, and the fourth scanning surface 32 are arranged in order from one end of the inspection channel to the other end. In other embodiments, the first scanning surface 21, the third scanning surface 31, the fourth scanning surface 32, and the second scanning surface 22 may be arranged in order from one end of the inspection channel to the other end. Alternatively, the third scanning surface 31, the first scanning surface 21, the fourth scanning surface 32, and the second scanning surface 22 may be arranged in order. Alternatively, the third scanning surface 31, the first scanning surface 21, the second scanning surface 22, and the fourth scanning surface 32 may be arranged in order.

[0052] In some embodiments, the second scanning surface 22 and the fourth scanning surface 32 are arranged adjacent to each other in the extension direction of the inspection channel and are both located between the first scanning surface 21 and the third scanning surface 31. By making the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32 non-coplanar, crosstalk of rays between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32 can be avoided.

[0053] Please refer to Figure 3 , Figure 3 FIG. 1 is a structural diagram of a safety inspection device 10 shown in another embodiment of the present application. Figure 3 In the illustrated embodiment, from one end of the inspection channel to the other end thereof, there are, in order, the first scanning surface 21, the second scanning surface 22, the fourth scanning surface 32, and the third scanning surface 31. In some other embodiments, from one end of the inspection channel to the other end thereof, there may be, in order, the third scanning surface 31, the second scanning surface 22, the fourth scanning surface 32, and the first scanning surface 21.

[0054] In some embodiments, the first scanning surface 21 and the third scanning surface 31 are arranged adjacent to each other in the extension direction of the inspection channel, and the first scanning surface 21 and the third scanning surface 31 are both located between the second scanning surface 22 and the fourth scanning surface 32. This can avoid radiation crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32, thereby improving detection accuracy.

[0055] Please refer to Figure 4 , Figure 4 FIG. 1 is a structural diagram of a safety inspection device 10 according to another embodiment of the present application. Figure 4 In the illustrated embodiment, from one end of the inspection channel to the other end thereof, the second scanning surface 22, the first scanning surface 21, the third scanning surface 31, and the fourth scanning surface 32 are arranged in order. Alternatively, the fourth scanning surface 32, the first scanning surface 21, the third scanning surface 31, and the second scanning surface 22 may be arranged in order.

[0056] In some embodiments, the first scanning surface 21 and the second scanning surface 22 are arranged adjacent to each other in the extension direction of the inspection channel, and the first scanning surface 21 is located between the second scanning surface 22 and the fourth scanning surface 32, and the third scanning surface 31 is located on the side of the fourth scanning surface 32 away from the first scanning surface 21, or the third scanning surface 31 is located on the side of the second scanning surface 22 away from the first scanning surface 21. This can avoid radiation crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32, thereby improving detection accuracy.

[0057] Please refer to Figure 5 , Figure 5 This is a structural diagram of a security inspection device 10 shown in another embodiment of the present application. It can avoid the crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31 and the fourth scanning surface 32, thereby improving the detection accuracy. Figure 5 In the illustrated embodiment, from one end of the inspection channel to the other end thereof, there are, in order, the second scanning surface 22, the first scanning surface 21, the fourth scanning surface 32, and the third scanning surface 31. This can prevent radiation crosstalk between the first scanning surface 21, the second scanning surface 22, the third scanning surface 31, and the fourth scanning surface 32, thereby improving detection accuracy.

[0058] It should be understood that the above-mentioned illustrations are only used to illustrate the relative position relationship between different scanning surfaces in the embodiments of the present application, and are not to be understood as specific limitations on the embodiments of the present application. Any reasonable scanning surface deformation design is within the scope of the inventive concept of the present application.

[0059] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0060] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A safety inspection device, characterized in that: At least a first inspection channel and a second inspection channel are provided adjacent to each other, wherein: The first inspection channel includes a first ray source and a second ray source with different scanning angles, and corresponding first and second detectors; the first ray source has a first scanning surface, and the second ray source has a second scanning surface; The second inspection channel includes a third ray source and a fourth ray source with different scanning angles, and corresponding third and fourth detectors; the third ray source has a third scanning surface, and the fourth ray source has a fourth scanning surface; The first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are not coplanar in the extension direction of the inspection channel.

2. The safety inspection device according to claim 1, characterized in that: The second scanning surface and the fourth scanning surface are scanning surfaces having the same scanning angle, and the first scanning surface and the third scanning surface are scanning surfaces having the same scanning angle; or The second scanning surface and the fourth scanning surface are scanning surfaces with the same scanning angle, and the first scanning surface and the third scanning surface are scanning surfaces with different scanning angles.

3. The safety inspection device according to claim 2, characterized in that: The first scanning surface and the third scanning surface are adjacently arranged in the extending direction of the inspection channel, and are both located on the same side of the second scanning surface and the fourth scanning surface that is closer.

4. The safety inspection device according to claim 2, characterized in that: The first scanning surface and the second scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and the second scanning surface is located between the first scanning surface and the third scanning surface, the fourth scanning surface is located on the side of the third scanning surface away from the second scanning surface, or the fourth scanning surface is located on the side of the first scanning surface away from the second scanning surface.

5. The safety inspection device according to claim 2, characterized in that: The second scanning surface and the fourth scanning surface are adjacently arranged in the extension direction of the inspection channel, and are both located between the first scanning surface and the third scanning surface.

6. The safety inspection device according to claim 2, characterized in that: The first scanning surface and the third scanning surface are adjacently arranged in the extension direction of the inspection channel, and the first scanning surface and the third scanning surface are both located between the second scanning surface and the fourth scanning surface.

7. The safety inspection device according to claim 2, characterized in that: The first scanning surface and the second scanning surface are arranged adjacent to each other in the extension direction of the inspection channel, and the first scanning surface is located between the second scanning surface and the fourth scanning surface, the third scanning surface is located on the side of the fourth scanning surface away from the first scanning surface, or the third scanning surface is located on the side of the second scanning surface away from the first scanning surface.

8. The safety inspection device according to claim 1 or 2, characterized in that: The first scanning surface, the second scanning surface, the third scanning surface and the fourth scanning surface are all perpendicular to the extension direction of the inspection channel; or At least one of the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface forms a preset angle with the extension direction of the inspection channel.

9. The safety inspection device according to claim 1 or 2, characterized in that: For the first inspection channel, if the second ray source is a side-view ray source, the first ray source is a top-view ray source or a bottom-view ray source; For the second inspection channel, if the fourth ray source is a side-view ray source, the third ray source is a top-view ray source or a bottom-view ray source.

10. The safety inspection device according to claim 1, characterized in that: The intervals between adjacent scanning surfaces among the first scanning surface, the second scanning surface, the third scanning surface, and the fourth scanning surface are equal.

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