JP7369593B2 - inspection system - Google Patents

Description

The present invention relates to a technique for inspecting an object to be inspected.

As a technology for inspecting objects to be inspected, Patent Document 1 discloses an efficient baggage inspection by moving a baggage floor plate moving in a baggage lane and a person floor plate moving in a people lane at approximately the same speed. A technique for performing this is disclosed.

Japanese Patent Application Publication No. 2019-11981

BACKGROUND ART Baggage inspection devices conventionally used at airports and the like are staffed by a plurality of staff members who transport baggage at low speeds to carry out time-consuming inspections. On the other hand, the targets of terrorist attacks are diversifying to include event venues, transportation facilities, office buildings, hotels, etc., and even if it is not airport-level security, it is necessary to maintain throughput close to the current level, improve safety, and improve convenience. The need for high security is increasing.

In baggage inspection devices for event venues, the installation space is limited, and it is often difficult to deploy multiple staff members, such as at airports. Therefore, in order to perform high-throughput baggage inspection, an inspection device that can be handled by a small number of inspectors is required. However, conventional baggage inspection devices require a person to operate the device, a person to look at the screen, a person to receive the user's baggage and put it into the inspection device, and a person to receive the inspected baggage and hand it to the user. There was a problem that a small number of inspectors could not handle the situation.

On the other hand, if a display means on which test results and the like are displayed and viewed by an inspector is viewed by someone other than the inspector, there is a risk that the contents of the package will be revealed to others.
SUMMARY OF THE INVENTION In view of the above background, an object of the present invention is to make an image of an object to be inspected more visible to an inspector and less visible to anyone other than the inspector.

In order to solve the above-mentioned problems, the present invention provides two or more conveyance paths in which the objects to be inspected are respectively conveyed, which are arranged in parallel to each other, and the respective owners of the objects to be inspected pass on both sides of the conveyance paths. In the inspection apparatus in which an inspector is placed on the discharge side of the inspection object, a display device for displaying an image taken of the inspection object is provided in the conveyance direction of the conveyance path or toward the inspector side. An inspection system according to the present invention is provided as a first aspect.

According to the inspection system of the first aspect, it is possible to make the image of the inspection object more visible to the inspector and less visible to people other than the inspector.

In the inspection system of the first aspect described above, a configuration may be adopted as a second aspect in which the display device is provided with a cover that blocks the line of sight from the owner.

According to the inspection system of the second aspect, it is possible to make the image of the inspection object even more difficult for people other than the inspector to see.

Diagram showing the appearance of the baggage inspection system according to the example Diagram showing the appearance of the baggage inspection unit Diagram showing an example of a displayed transparent image and external image Diagram showing display orientation Diagram showing an example of a display cover Diagram showing a modified display Diagram showing the appearance of a modified baggage inspection unit

[1] Example FIG. 1 shows the appearance of a baggage inspection system 1 according to an example. The luggage inspection system 1 is a system that uses an inspection device to inspect the luggage of attendees at an event venue, for example, to see if they contain items that are prohibited to be brought in (prohibited items), such as knives. The baggage inspection system 1 is an example of the "inspection system" of the present invention.

The luggage inspection system 1 is used by the owners 4a, 4b of the luggage 3a, 3b, and the inspectors 5a, 5b who perform inspection-related work. The baggage inspection system 1 includes a plurality of (that is, two or more) baggage inspection units 2a and 2b. Each of the plurality of baggage inspection units 2 has a transport path B1a, B1b, and inspects the baggage 3a, 3b that is transported along the transport path B1 in the transport direction A1. The luggage 3a, 3b is an example of the "inspection object" of the present invention.

In the baggage inspection system 1, two or more conveyance paths B1a and B1b along which the baggage 3a and 3b are conveyed, respectively, are arranged so as to be parallel to each other. In the baggage inspection units 2a, 2b, inspectors 5a, 5b are placed on either the left or right of the transport paths B1a, B1b, respectively, and the owner 4a of the baggage 3a, 3b is placed on the opposite side from the inspectors 5a, 5b. , 4b are provided respectively. The left and right here means the left side and the right side when the conveyance paths B1a and B1b are faced in the conveyance direction A1.

In this embodiment, inspection lanes B2a and B2b are provided on the left side of transport paths B1a and B1b, respectively, and inspectors 5a and 5b are placed on the right side, respectively. In each baggage inspection unit 2a, 2b, a so-called one operation is carried out, in which only one inspector 5a, 5b is respectively assigned. In addition, since the inspection lane B2b is also provided behind the inspector 5a, the respective owners 4a and 4b of the packages 3a and 3b pass on both sides of the conveyance path B1a.

FIG. 2 shows the external appearance of the baggage inspection unit 2. FIG. 2(a) shows the baggage inspection unit 2 seen from vertically above, and FIG. 2(b) shows the baggage inspection unit 2 seen from the horizontal direction. The baggage inspection unit 2 includes a first conveyance device 10, a second conveyance device 20, an inspection device 30, a hood 40, a camera 50, a control device 60, and a display 70. The first conveyance device 10 and the second conveyance device 20 are both conveyance devices that convey the baggage 3 in the conveyance direction A1, and are belt conveyors in this embodiment.

Note that both conveyance devices are not limited to belt conveyors as long as they can convey the cargo 3, and may be roller conveyors, chain conveyors, mesh conveyors, etc., for example. The first conveyance device 10 and the second conveyance device 20 are arranged side by side in the conveyance direction A1 and form a conveyance path B1. The first conveyance device 10 is arranged upstream of the second conveyance device 20, and is provided with a place B3 where the owner 4 places the luggage 3.

A hood 40 and an inspection device 30 are installed at the end of the conveyance path B1 along which the luggage placed at the storage location B3 is conveyed. The inspection device 30 is a device that takes a transmitted image of the transported inspection object for inspection. For example, the inspection device 30 irradiates electromagnetic waves to the baggage 3 passing through a photographing area B4 in which a transparent image is taken within the device, and draws an image of the baggage 3 with shading according to the intensity of the electromagnetic waves that have passed through the baggage 3. Generate as a transparent image.

The electromagnetic waves irradiated onto the baggage 3 by the inspection device 30 are electromagnetic waves in a frequency band that transmits through the baggage 3 but have different transmittance depending on the substance of the contents of the baggage 3, such as X-rays. If it is determined in the first inspection based on the transparent image taken by the inspection device 30 that an item that may be prohibited to be brought into the bag is shown, the inspector 5 opens the baggage 3 and confirms what is actually inside. Perform a secondary inspection. The control device 60 determines whether or not this secondary inspection is necessary based on the photographed transparent image. The detailed determination method will be explained later.

A hood 40 is provided on the entrance side of the inspection device 30. The hood 40 is a member that covers the conveyance path of the luggage 3, and is provided to prevent the owner 4's hands from entering the photographing area B4 where electromagnetic waves are flying around. The hood 40 has an upper surface portion 41, a side surface portion 42, and a side surface portion 43, and has a U-shaped cross section. The top surface portion 41, the side surface portion 42, and the side surface portion 43 each have a rectangular plate shape.

The side surface portion 42 is connected to the top surface portion 41 at an angle of 90 degrees, and the top surface portion 41 is connected to the side surface portion 43 at an angle of 90 degrees. The internal space B5 of the hood 40 has a size that allows the luggage 3 to pass through. A camera 50 is provided vertically above the upper surface portion 41 on the upstream side of the inspection device 30 in the transport direction A1. The camera 50 photographs an external image showing the external appearance of the luggage 3 being transported by the first transporting device 10 through the hood 40 . The external image taken by the camera 50 and the transparent image taken by the inspection device 30 are displayed on the display 70 under the control of the control device 60.

FIG. 3 shows an example of a displayed transparent image and external appearance image. In the example of FIG. 3, the control device 60 causes the display surface 71 of the display 70 to display a transparent image G1 of the luggage 3, an external image G2 of the luggage 3, and a determination result C1. The determination result C1 is an image showing the character string "Prohibited items have been detected." In the example shown in FIG. 3, the knife-shaped contents in baggage 3 are determined to be prohibited items.

The control device 60 analyzes the image taken by the camera 50 and recognizes objects passing on the conveyance path B1. Then, the control device 60 controls the camera at a time (hereinafter referred to as "exterior photographing time") before and closest to the time when the transparent image G1 was photographed (hereinafter referred to as "transparent photographing time"). The object on the conveyance path B1 photographed by 50 is determined to be the baggage for which the transparent image G1 was photographed, and the exterior image G2 of the baggage is displayed simultaneously with the transparent image G1.

As described above, under the control of the control device 60, the baggage inspection unit 2 transports the baggage 3, photographs the transparent image G1 and the exterior image G2 of the baggage 3 being transported, and captures the photographed transparent image G1 and the exterior image G2. The images are simultaneously displayed on a display 70 serving as a display means. The display 70 is a display device that displays images (transparent images and exterior images) taken of the luggage 3, and is provided at a position where the inspector can view the photographed luggage 3 from the place where he/she receives it.

In this embodiment, the display 70 is provided on the inspection device 30 as shown in FIG. The orientation of the display 70 will be explained with reference to FIG. 4.
FIG. 4 depicts the orientation of display 70. The display 70 has a planar display surface 71, and the display surface 71 is provided along the vertical direction. Therefore, the normal direction A11 of the display surface 71 is along the horizontal direction.

The display 70 is provided in such a direction that the normal direction A11 of the display surface 71 is inclined toward the inspector 5 by an angle θ1 with respect to the transport direction A1. Note that the angle θ1 is not limited to the angle shown in FIG. 4, and may be any angle that is greater than or equal to 0 degrees and less than 90 degrees with respect to the transport direction A1. That is, the display 70 may be provided facing the transport direction A1 of the transport path B1, or may be provided facing the inspector 5 side.

When the display 70 is installed facing the inspector 5 side, compared to when the display 70 is installed facing the inspection lane B2 side, the image (transparent image and external image) of the object to be inspected is not shown to the inspector 5. It is possible to make it easy to see and difficult for people other than the inspector 5 (for example, the owner 4 of the baggage 3) to see. Further, even if the display 70 is provided facing the conveyance direction A1, the owner 4 of the package 3 usually faces the conveyance direction A1 except when receiving the package 3, so it is difficult to look at the display surface 71. When I think about it, I have to go out of my way to look back.

On the other hand, the inspector 5 only needs to face the display surface 71 because he/she determines whether or not a secondary inspection is to be performed by looking at the image of the object to be inspected. Therefore, even when the display 70 is provided facing the transport direction A1, the image of the object to be inspected is easier for the inspector 5 to see than when the display 70 is provided facing the inspection lane B2. It can be made difficult for anyone other than the inspector 5 to see.

Since the angle θ1 is less than 90 degrees, it does not include the case where the display 70 is installed facing the perpendicular direction A2 shown in FIG. ). To prevent the contents of a baggage 3a belonging to another owner (owner 4a in the example shown in FIG. 1) from being seen by the owner 4b who is passing through the inspection lane B2b next to the inspection lane B2b in the right angle direction A2. I can do it.

Further, the display 70 is provided with a cover for blocking the line of sight to the display surface 71.
FIG. 5 shows an example of a cover for the display 70. As shown in FIG. In the example of FIG. 5, a cover 80 is attached to the display 70. The cover 80 is a member that mainly blocks the owner's 4 line of sight toward the display surface 71 and makes it difficult to see the image displayed on the display surface 71. The cover 80 includes a cover member 81 on the inspector 5 side and a cover member 82 on the inspection lane B2 side.

The dimensions from the display surface 71 are L1 for the cover member 81 and L2 for the cover member 82 (L1<L2). In this way, the size of the portion of the cover 80 that blocks the line of sight is different on the left and right sides. Thereby, the image of the inspection object can be made more visible to the inspector 5 and more difficult to see to anyone other than the inspector 5, compared to a case where the sizes are the same. Note that the cover 80 may include a cover member that covers the vertically upper side of the display surface 71 in order to prevent viewing not only from the horizontal direction but also from vertically above. Moreover, when the display surface 71 faces the conveyance direction A1, it is good also as L1=L2.

As described above, when an inspector is at a place where he/she receives baggage that should be subjected to secondary inspection, he/she can simply look at the display 70 and, if a prohibited item is shown in the transparent image G1, the inspector can check the baggage that should be subjected to secondary inspection. The external appearance can be known from the external image. In this way, according to the present embodiment, it is possible to more easily find the object to be inspected for secondary inspection than when the transparent image and the exterior image are not displayed simultaneously on the same display means.

The conveyance path B1 is arranged at a position approximately at the waist height of a person so that the owner of the luggage can easily place and receive the luggage. Therefore, the inspector also looks down on the baggage from above. In this embodiment, the camera 50 photographs the exterior image of the luggage from the vertically upward side, making it easier for inspectors to identify the actual luggage shown in the exterior image, compared to, for example, photographing the luggage from the horizontal direction. It can be done.

[2] Modifications The embodiments described above are merely examples of implementing the present invention, and may be modified as follows. Moreover, each embodiment and each modification may be combined as necessary.

[2-1] Viewing Angle In the embodiment, the cover 80 was provided to block the line of sight to the display surface 71 of the display 70, but the method for preventing viewing of the display surface 71 is not limited to this.
FIG. 6 shows a display 70c of this modification. FIG. 6 shows the display 70c viewed from vertically above.

In the display surface 71c of the display 70c, the viewing angle θ11 on the inspector's side is larger than the viewing angle θ12 on the owner's side. As a result, as in the embodiment, the image of the object to be inspected can be more easily seen by the inspector 5 and harder to see by anyone other than the inspector 5, compared to the case where the viewing angles are the same on the left and right sides.

[2-2] Switching between left and right sides In the embodiment, the cover member 81 on the left side facing the display surface 71 shown in FIG. 5 was placed on the inspector side, and the cover member 82 on the right side was placed on the owner side. Depending on the location where the inspection is performed, the left and right positions of the inspection lane B2 through which the owner 4 passes and the inspector 5 may be reversed.

Therefore, the cover 80 may be attachable to and detachable from the display 70, and may also be attachable even when the cover is turned upside down. In that case, when the cover 80 is attached as shown in FIG. 5, the cover member 81 on the left side when facing the display surface 71 is placed on the inspector's side, and the cover member 82 on the right side is placed on the owner's side. . On the other hand, when it is attached to the display 70 upside down, the cover member 81 on the left side when facing the display surface 71 is placed on the owner's side, and the cover member 82 on the right side is placed on the inspector side.

For example, if the display 70c shown in FIG. 6 is a display device that can be displayed even when upside down, the viewing angle of the display surface 71c on the inspector side in the baggage inspection unit 2 is larger than the viewing angle on the owner's side. Can be used in large size. In this manner, in this modification, the relationship between the left and right sizes of the cover or the relationship between the left and right viewing angles of the display surface can be changed. As a result, regardless of whether the inspection lane B2 and the inspector 5 are placed on the left or right side of the transport path B1, the image of the object to be inspected can be easily seen by the inspector 5 and further difficult to be seen by anyone other than the inspector 5. I can do it.

[2-3] Arrangement of inspectors In the embodiment, only one inspector 5 was arranged in each baggage inspection unit 2, but the arrangement of inspectors is not limited to this. Two or more inspectors may be placed in one baggage inspection unit 2, or one inspector may be placed in two baggage inspection units 2. Furthermore, an inspector may be placed in the cargo discharge direction of the inspection device 30.

FIG. 7 shows a baggage inspection unit 2d of this modification. In the baggage inspection unit 2d, the inspector 5 is placed in the baggage discharge direction of the inspection device 30 (same direction as the conveyance direction A1), and when performing a secondary inspection, the inspector 5 inspects the baggage transported by the second conveyance device 20. Receive 3. In this case, the display 70d is installed facing the transport direction A1, which is the direction in which the inspector 5 is, so that the inspector 5 can easily see the display 70d. That is, the display 70d is provided facing the transport direction A1 and facing the inspector 5 side.

In either case, the inspector 5 is placed on the discharge side of the inspection device 30 for secondary inspection. By providing a display facing the inspector 5 arranged in this way, the image of the object to be inspected can be easily seen by the inspector 5 and difficult to be seen by anyone other than the inspector 5.

Further, in the example of FIG. 7, a cover 80d is attached to the display 70d, and the cover member 81d and the cover member 82d have the same size (dimension L1=dimension L2 shown in FIG. 5). This is because the inspector 5 is in front of the display 70d, so there is no need to make the display surface 71 easily visible from the inspector 5 side by changing the size of the cover member.

[2-4] Baggage Inspection Location In the example, the case where baggage inspection is conducted at the event venue has been explained, but in addition to this, for example, at the entrance of vehicles such as airports, stations, ports, and bus terminals. It may be held at the entrance of a facility such as a concert venue, a sports stadium, a stadium, or an art museum. In short, as long as it is necessary to check the contents of a visitor's luggage for safety at the entrance, the luggage may be inspected at any location (the entrance).

[2-5] One conveyance device In the embodiment, there are two conveyance devices, but there may be one conveyance device. In that case, the transport speed may always be constant, or if the number of items to be inspected is small (for example, when only one item is inspected at a time), the transport speed may be increased when the item passes through the imaging area B4. , the conveyance speed may be slowed down after the baggage passes through the photographing area B4.

DESCRIPTION OF SYMBOLS 1... Baggage inspection system, 2, 2a, 2b... Baggage inspection unit, 10... First transport device, 20... Second transport device, 30... Inspection device, 40... Hood, 50... Camera, 60... Control device, 70... Display, 80...Cover, G1...Transparent image, G2...Exterior image.

Claims (2)

an inspection device that photographs and inspects a passing inspection object;
a conveyance device that conveys the inspection object along a conveyance path passing through the inspection device;
The owner of the object to be inspected passes along either the left or right side of the conveyance path in parallel with the conveyance path , and an inspector is placed on the other side and the side from which the object to be inspected is discharged from the inspection device . a display surface that is provided above the transport path and on the side of the inspector at an angle of 0 degrees or more and less than 90 degrees with respect to the transport path, and displays an image photographed by the inspection device ; a display device directed to the display device;
The display surface has a viewing angle on a side other than the owner side that is larger than a viewing angle on the owner side. The inspection system according to claim 1, wherein the display surface can switch the relationship between the left and right viewing angles.

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