JP6588148B1 - Inspection system - Google Patents

Abstract

An object of the present invention is to provide an inspection system for baggage with improved throughput while ensuring safety. An inspection system 100 inspects a load BA conveyed by a continuously operating conveyor 20 by an inspection unit 10, and includes a second conveyor unit 22 passing through the inspection unit 10, and an inspection unit 10. And a first conveyor section 21 that operates independently of the second conveyor section 22 and transports the luggage BA before inspection. [Selection] Figure 1

Description

  The present invention relates to an inspection system that inspects a package using X-rays or the like while conveying the package.

  As an inspection system for baggage used at an airport or the like, there is an X-ray inspection apparatus that synthesizes a plurality of X-ray images taken while conveying an object (Patent Document 1). At the airport, a plurality of staff members are arranged in association with the X-ray inspection apparatus, and strict inspections are performed over time while slowly transporting baggage.

  On the other hand, security checks such as baggage are not carried out in domestic railways. This is because there are circumstances such as a large number of passengers per vehicle and a large number of operations, and there is a circumstance where importance is attached to the convenience that pre-boarding procedures are unnecessary. From such a background, the current X-ray inspection apparatus is not practical and difficult to implement realistically when it is assumed that the inspection takes time and the throughput is low and it is assumed to be installed at the ticket gate. It is considered to be.

  However, incidents involving actual arson and killing have occurred in railway vehicles, and there is an increasing need for security checks that prevent the introduction of dangerous goods into the railway vehicles. Even if it is not airport-level security, it is required to improve security and realize highly convenient security while suppressing a decrease in throughput at a ticket gate.

JP 2010-230532 A

  The present invention has been made in view of the above points, and can be applied to railways and other mass transit facilities, event venues, and the like, and provides an inspection system for luggage that has improved throughput while ensuring safety. For the purpose.

An inspection system for achieving the above object is an inspection system for inspecting a package conveyed by a continuously operating conveyor by an inspection unit, and is linked to the second conveyor unit passing through the inspection unit and the inspection unit. The first conveyor unit operates independently of the second conveyor unit and conveys the baggage before inspection.

  The inspection system has a first conveyor unit that operates in conjunction with the inspection unit and operates independently of the second conveyor unit and conveys the baggage before the inspection. Therefore, the second conveyor unit moves the baggage at the inspection unit. While ensuring, the 1st conveyor part operate | moves independently of a 2nd conveyor part, the parallel process which receives and conveys the package | bag before a test | inspection is attained, and the throughput of a package inspection can be improved.

  In a specific aspect of the present invention, the first conveyor unit is temporarily stopped after the previous load is conveyed to the inspection unit. In this case, it becomes easy to place the luggage before inspection on the first conveyor unit.

  In another aspect of the present invention, the transport speed by the second conveyor unit and the transport speed by the first conveyor unit are different. The second conveyor section needs to move the load at a speed adapted to the inspection, and the first conveyor section has a role of passing the load to the second conveyor section at an appropriate timing, and both conveyor sections are transported differently. Set to speed. In the second conveyor unit, if there is no luggage, the conveyance of the luggage may be stopped, or the conveyance of the luggage may be stopped at a timing necessary for the inspection.

  In still another aspect of the present invention, the conveyance speed by the first conveyor unit is slower than the conveyance speed by the second conveyor unit. In this case, it is possible to prevent the baggage from staying in front of the second conveyor unit, or to avoid a state in which the processing in the inspection unit is hindered by the transfer of the baggage from the first conveyor unit to the second conveyor unit. be able to.

  In still another aspect of the present invention, it has a third conveyor portion that is arranged on the downstream side of the second conveyor portion and extends to the luggage receiving area. In this case, it is possible to prevent the operation of the second conveyor unit from being suppressed and the inspection delay in the inspection unit due to the accumulation of the baggage in the baggage receiving area.

  In still another aspect of the present invention, the transport speed by the third conveyor unit is slower than the transport speed by the second conveyor unit. In this case, it is possible to prevent the load from staying in the third conveyor portion without receiving the load at the third conveyor portion.

  In still another aspect of the present invention, an access detection unit that detects the proximity of the subject and a control device that controls operations of the conveyor and the inspection unit are further provided. In this case, the owner of the luggage can be confirmed based on the detection result of the access detection unit, and processing for associating or associating the owner with the luggage is also possible.

  In yet another aspect of the present invention, the access detection unit includes an authentication information acquisition unit that detects authentication information for the authentication medium, and the control device associates the authentication medium with the package using the authentication information acquisition unit. When the authentication is completed, the transfer of the load from the first conveyor unit to the second conveyor unit is started. In this case, the package having the authentication information can be inspected, and the package can be managed more strictly.

  In still another aspect of the present invention, the apparatus further includes a load detection unit that detects a load placed on the conveyor, and a control device that controls operations of the conveyor and the inspection unit. Based on this, the operation start or operation stop of the conveyor is controlled. In this case, the conveyor can be operated in conjunction with the load, and timing loss can be reduced.

(A) is a side cross section conceptually showing the inspection system according to the first embodiment, and (B) is a plan view of the inspection system of (A). It is a conceptual block diagram explaining the part relevant to control of an inspection system. It is a conceptual chart explaining progress of an inspection. It is a flowchart explaining operation | movement of a test | inspection system. It is a top view explaining the inspection system concerning a 2nd embodiment. It is a top view explaining the inspection system concerning a 3rd embodiment.

[First Embodiment]
The details of the inspection system according to the first embodiment of the present invention will be described below with reference to the drawings.

  An inspection system 100 shown in FIGS. 1A and 1B is installed at, for example, a ticket gate of a station, an entrance of an event hall, etc., and includes an inspection unit 10, a conveyor 20, a gate unit 30, and the like. And a control device 40. In the inspection system 100, the conveyor 20 receives the baggage BA, which is a baggage possessed by the subject PA, who is a passer-by, and transports the baggage BA so that it travels straight. Inspect with. When the subject PA passes through the gate unit 30, the subject PA is placed on the conveyor 20 with the luggage BA as an object to be inspected. The inspection system 100 determines the eligibility of the subject PA passing through the passage PW by the gate unit 30 or specifies the ID of the subject PA, etc., and in parallel with this, the inspection unit 10 performs the luggage BA of the subject PA. We will collect and inspect information about the presence or absence of dangerous goods through the inside.

  The inspection unit 10 is specifically an X-ray inspection apparatus, and an X-ray source 11 that irradiates an X-ray RL that is radiation to the luggage BA that is an inspection target, and an X-ray RL from the X-ray source 11. The X-ray sensor unit 12 that receives components that have passed through the luggage BA, and the rectangular parallelepiped shielding box 15 that houses the X-ray source 11 and the X-ray sensor unit 12 therein. In the inspection unit 10, the conveyor 20 extends in the X direction from the inlet EN provided in the shielding box 15 toward the outlet EX, and passes between the X-ray source 11 and the X-ray sensor unit 12. As a result, the inspection can be performed while passing the load BA between the X-ray source 11 and the X-ray sensor unit 12 in the shielding box 15 by the conveyor 20.

  The X-ray source 11 is a radiation source that emits an X-ray RL. The X-ray source 11 is disposed on the lower side near the center of the shielding box 15, and irradiates the X-ray RL that is radiation toward the X-ray sensor unit 12. The X-ray sensor unit 12 is a radiation sensor unit that receives an X-ray RL. The X-ray sensor unit 12 is disposed on the upper side near the center of the shielding box 15 so as to face the X-ray source 11 across the conveyance path of the conveyor 20. For example, the X-ray sensor unit 12 arranges the light receiving elements in a line so as to extend in the Y direction perpendicular to the transport direction D1, thereby enabling line-type scanning in synchronization with the transport by the conveyor 20. Yes. That is, when the baggage BA passes near the center of the interior space of the shielding box 15, the baggage BA is irradiated with X-rays RL, and based on the result received by the X-ray sensor unit 12, the inside of the baggage BA is placed on the XY plane. A two-dimensional inspection is performed. The shielding box 15 is a rectangular parallelepiped housing having a rectangular opening that forms the inlet EN and the outlet EX, and has a rectangular opening that forms the inlet EN and the outlet EX. In addition, each wall part which comprises the shielding box 15 is formed with X-ray absorption members, such as lead, in order to suppress the X-ray leakage to the exterior. The entrance EN and the exit EX of the shielding box 15 are provided with shielding curtains (not shown) that cover the entrance EN and the exit EX and the periphery thereof and prevent leakage of X-rays outside the shielding box 15.

  The conveyor 20 includes a central second conveyor portion 22 that passes through the inspection portion 10, a first conveyor portion 21 that is disposed on the upstream side of the second conveyor portion 22 and conveys the load BA before inspection, and a second conveyor portion 22. And a third conveyor unit 23 which is arranged on the downstream side and conveys the baggage BA after inspection. The 1st-3rd conveyor parts 21-23 operate | move continuously, and are connected in the state which is not largely isolate | separated as a series. The first to third conveyor units 21 to 23 operate independently, but move the cargo BA from the right end (−Y end) of the conveyor 20 to the left end (+ Y end) of the conveyor 20 by operating in cooperation. Can do. The first conveyor part 21 is a part extending from the luggage storage site BP to the front of the inspection part 10, and the second conveyor part 22 is a part passing through the inspection part 10 adjacent to the gate part 30, and the third conveyor part 23 Is a portion extending from the back of the inspection unit 10 to the baggage receiving place BR. The conveyor units 21, 22, and 23 and their components are supported by a common frame 28.

  The upstream first conveyor unit 21 includes a belt unit 5a on which the load BA (B1) is placed on the upper surface, and a pair of roller units that are rotatably fixed to both ends of the belt unit 5a and over which the belt unit 5a is stretched. 5b, the belt portion 5a and the belt support 5c that supports the load B1 placed on the belt portion 5a, and the roller portion 5b are driven to rotate the belt portion 5a and the load BA on the belt portion 5a in the Y direction. And a drive mechanism 51d that moves at a desired speed. Since the belt part 5a which comprises the 1st conveyor part 21 is arrange | positioned upstream of the test | inspection part 10, and is not used for a X-ray test | inspection, it does not need to have the permeability | transmittance with respect to a X-ray. The first conveyor unit 21 is provided with a baggage detection unit 21 s that detects the distance and movement to the baggage BA, and the baggage detection unit 21 s has the baggage BA on the belt unit 5 a of the first conveyor unit 21. In addition, it is also possible to detect the position and movement state of the load BA on the belt portion 5a. The control device 40 controls the start or stop of the operation of the first conveyor unit 21 based on, for example, the output of the baggage detection unit 21s, the conveyance status, and the like. By using the output of the load detection unit 22s, it is possible to reduce timing loss in the transport operation of the first conveyor unit 21.

  The second conveyor section 22 in the center has the same structure as the first conveyor section 21, and a belt section 5a on which the load BA (B2) is placed on the upper surface and a pair of roller sections on which the belt section 5a is stretched. 5b, a belt support 5c that supports the belt portion 5a and the like, and a drive mechanism 52d that moves the load BA on the belt portion 5a in the Y direction at a desired speed by rotationally driving the roller portion 5b. The belt part 5a which comprises the 2nd conveyor part 22 passes the test | inspection part 10, and has the permeability | transmittance with respect to an X-ray. The second conveyor unit 22 is provided with baggage detection units 22s and 22p that detect the distance and movement to the baggage BA at a position corresponding to the entrance EN of the shielding box 15 and a position corresponding to the exit EX. The baggage detection units 22s and 22p detect whether or not the baggage BA exists at the entrance and the exit of the belt unit 5a provided in the second conveyor unit 22. The control device 40 controls the start or stop of the operation of the second conveyor unit 22 based on, for example, the output of the baggage detection units 22s and 22p, the conveyance status, and the like. By using the outputs of the parcel detection units 22s and 22p, the timing loss in the transport operation of the second conveyor unit 22 can be reduced.

  The downstream third conveyor part 23 has the same structure as the first conveyor part 21 or the second conveyor part 22, and includes a belt part 5a, a pair of roller parts 5b, a belt support 5c, a drive mechanism 53d, Have Since the belt part 5a which comprises the 3rd conveyor part 23 is not used for a X-ray test | inspection, it does not need to have the permeability | transmittance with respect to a X-ray. The third conveyor unit 23 is provided with a baggage detection unit 23s that detects the distance and movement to the baggage BA in the upstream near the second conveyor unit 22, and the baggage detection unit 23s is provided with the third conveyor unit 23s. It is detected whether or not there is a baggage BA at the entrance of the belt portion 5a provided in the. The control device 40 controls the start or stop of the operation of the third conveyor unit 23 based on, for example, the output of the package detection unit 23s, the conveyance status, and the like.

  Note that the structures of the first to third conveyor portions 21 to 23 shown in FIG. 1 and the like are merely examples, and various mechanisms that can transport the load BA can be incorporated.

  As will be described later, when the user sensor 33 of the gate unit 30 detects the proximity of the subject person PA, the first to third conveyor parts 21 to 23 receive a command from the control device 40 and start a conveying operation. To do. In this case, the first to third conveyor units 21 to 23 start the conveying operation at the same time in the specific operation example, but the second conveyor unit 22 which is the second stage starts the first stage. The operation start of the conveyor unit 21 can be delayed, and the operation start of the third conveyor unit 23 at the third stage can be delayed from the operation start of the second conveyor unit 22 at the second stage. The operation of the first conveyor unit 21 or the drive mechanism 51d is controlled by the control device 40. For example, the first conveyor unit 21 is based on the output of the luggage detection unit 22s provided in the second conveyor unit 22 or the like. When it is determined that the transfer of the load BA to the second conveyor unit 22 is completed, the transport operation is temporarily stopped. That is, after the previous luggage BA is transported to the inspection unit 10, the first conveyor unit 21 is temporarily stopped. Thereby, it becomes easy for the subject PA to place the baggage B1 before the inspection on the first conveyor unit 21. The operation of the second conveyor unit 22 or the drive mechanism 52d is controlled by the control device 40. For example, the second conveyor unit 22 is based on the output of the parcel detection unit 23s provided in the third conveyor unit 23. When it is determined that the transfer of the load BA to the third conveyor unit 23 is completed, the transfer operation is stopped. Thereby, it is possible to prevent the subsequent load B2 on the second conveyor portion 22 from interfering with the previous load B3 in the third conveyor portion 23. The conveyance speed of the load B1 by the first conveyor unit 21 and the transfer speed of the load B2 by the second conveyor unit 22 are different. More specifically, in the standard operation, the conveyance speed of the load B1 by the first conveyor unit 21 is slower than the transfer speed of the load B2 by the second conveyor unit 22. In this case, the baggage BA can be prevented from staying in front of the second conveyor unit 22, or the inspection routine in the inspection unit 10 is hindered by the transfer of the baggage BA from the first conveyor unit 21 to the second conveyor unit 22. Such a situation can be avoided. In the 2nd conveyor part 22, you may stop the conveyance of the load B2 temporarily at the timing required for an inspection. The conveyance speed of the load B3 by the third conveyor unit 23 is slower than the transfer speed of the load B2 by the second conveyor unit 22. In this case, it is possible to prevent the luggage from staying in the third conveyor unit 23 without receiving the package at the third conveyor unit 23.

  The gate unit 30 has a plurality of body monitoring devices 31 that monitor the body of the subject PA who is the owner of the baggage BA and pass through the passage PW in a non-contact manner along the passage PW with respect to the body monitoring device 31. The authentication information acquisition part 32 arrange | positioned in the front | former stage and the user sensor 33 which detects the object person PA which passes along the channel | path PW accompanying the authentication information acquisition part 32 are included. Among these, the authentication information acquisition unit 32 and the user sensor 33 function as an access detection unit 39 that detects the proximity of the subject person PA. The body monitoring device 31 of the gate unit 30 is, for example, a metal detector using electromagnetic induction, and detects a blade or other metal possessed by the owner of the luggage BA. The body monitoring apparatus 31 may be an internal observation apparatus that irradiates a target with millimeter waves or terahertz waves and measures a reflected image inside the target (inside the clothes). In this case, based on the output of the body monitoring device 31, the control device 40 can visualize the blade and other dangerous materials possessed by the owner of the luggage BA, and can also determine whether there is a dangerous material. The authentication information acquisition unit 32 detects authentication information for the authentication medium PM presented by the subject PA passing through the passage PW. The authentication medium PM is an information recording medium such as an IC card, QR code (registered trademark) or other two-dimensional code, or a magnetic card, and holds authentication information electromagnetically and optically. The authentication information acquisition unit 32 can detect the authentication information recorded on the authentication medium PM without contact or by contact, and output the detection result to the control device 40. The authentication information recorded on the authentication medium PM includes various incidental information according to the usage in addition to the ID information. The authentication medium PM is not limited to the one that assumes ID authentication, and may be one that does not involve ID authentication. For example, the authentication medium PM is a record in which information related to permission to pass through the gate unit 30 is recorded, specifically, an admission ticket that only records information related to permission to enter the event venue, etc. It may be a ticket that records information. The user sensor 33 is, for example, a motion sensor using infrared rays, and detects that an object of a predetermined size or more, specifically, a target person PA is approaching a predetermined distance by moving through the passage PW and approaching the body monitoring device 31. . The detection signal of the user sensor 33 is output to the control device 40 and used as a trigger for starting the operation of the conveyor 20 or the body monitoring device 31.

  As shown in FIG. 2, the control device 40 includes an arithmetic processing unit 41, a storage unit 42, an input / output unit 43, and an interface unit 44, and controls the operations of the inspection unit 10 and the conveyor 20. Specifically, the control device 40 includes a computer loaded with an admission management program, and the admission management program incorporates a function for operating the inspection unit 10, the conveyor 20, and the gate unit 30 in cooperation with each other. It is.

The arithmetic processing unit 41 can perform data communication with each unit such as the inspection unit 10 and the conveyor 20 configuring the inspection system 100 via the interface unit 44. The arithmetic processing unit 41 operates based on programs and data stored in the storage unit 42, data received via the interface unit 44, etc., and performs processing based on information obtained from the input / output unit 43 and the interface unit 44. The processing progress and result are stored in the storage unit 42 and presented to the input / output unit 43. Specifically, when the arithmetic processing unit 41 detects the target person PA close to the gate unit 30 to a predetermined distance or less by the user sensor 33 provided as the access detection unit 39 in the gate unit 30, the arithmetic processing unit 41 of the previous passer-by It is confirmed that the interval time for ensuring that the acceptance process has been completed has passed, and that the baggage BA is placed on the first conveyor unit 21 at the first stage using the baggage detection unit 21s. On the condition that it confirms, the 1st-3rd conveyor parts 21-23 will start conveyance operation | movement, and the conveyance of the load BA on the 1st conveyor part 21 will be started. At this time, the arithmetic processing unit 41 can also link the target person PA and the baggage BA using the user sensor 33, the baggage detection unit 21s, and the like. It can be managed so as not to deviate from the reception timing. In parallel with the receipt of the shipment of the parcel BA or the start of the conveyance, the arithmetic processing unit 41 accepts the subject person PA into the gate unit 30 and starts the authentication process of the authentication medium PM possessed by the subject person PA by the authentication information acquisition unit 32. . The arithmetic processing unit 41 associates the authentication medium PM with the package BA using the authentication information acquisition unit 32 during the authentication process of the authentication medium PM. When the authentication processing of the authentication medium PM has been completed, the arithmetic processing unit 41 permits the start of the transfer of the load BA from the first conveyor unit 21 to the second conveyor unit 22, thereby allowing the second conveyor from the first conveyor unit 21. The transfer of the load BA to the unit 22 is started. The arithmetic processing unit 41 inspects the baggage BA passing through the inspection unit 10 through the second conveyor unit 22 through the inside thereof. The inspection result is displayed on an attendant display (not shown) of the input / output unit 43. In parallel with this, when the authentication process is completed by the authentication information acquisition unit 32, the subject person PA follows the announcement from the speaker and the user display (not shown) constituting the input / output unit 43. The processing unit 41 advances to 31 and inspects the body of the subject PA in a non-contact manner via the body monitoring device 31. The inspection result is displayed on an attendant display that constitutes a part of the input / output unit 43. When the inspection unit 10 detects a dangerous substance in the baggage BA, the arithmetic processing unit 41 displays an alarm on the clerk display of the input / output unit 43 and causes an abnormality to occur in the remote computer system via the interface unit 44. report. In addition, when an abnormality such as possession of dangerous materials is detected by the body monitoring device 31, the arithmetic processing unit 41 displays an alarm on the clerk display of the input / output unit 43 and communicates with a remote computer system via the interface unit 44. Report the occurrence of an abnormality. An opening / closing flap (not shown) that can be opened and closed can be provided at the rear stage of the body monitoring device 31. By providing this kind of opening / closing flap, the arithmetic processing unit 41 closes the opening / closing flap and holds a dangerous substance when there is an alarm based on an inspection by the inspection unit 10 or an alarm based on an inspection by the body monitoring device 31. Alternatively, it is possible to prevent the subject PA, who has hidden dangerous goods in the luggage BA, from passing. When there is no abnormality in the inspection unit 10 or the body monitoring device 31, the baggage BA is transferred from the second conveyor unit 22 to the third conveyor unit 23 under the control of the arithmetic processing unit 41, and is sent to the baggage receiving place BR. The moved subject PA can receive his / her parcel BA from the third conveyor section 23.

  In the above description, the arithmetic processing unit 41 displays an alarm on the clerk display of the input / output unit 43 when the inspection unit 10 detects a dangerous item in the baggage BA. Judgment is not limited to the inspection unit 10 or the arithmetic processing unit 41, and an clerk can make a judgment on site based on a fluoroscopic image of the luggage BA. Similarly, when abnormality such as possession of dangerous goods is detected for the subject person PA by the body monitoring device 31, the arithmetic processing unit 41 displays an alarm on the attendant display of the input / output unit 43, but the subject person PA The determination as to whether or not a dangerous object is possessed is not limited to the body monitoring device 31 or the arithmetic processing unit 41, and an attendant can determine on the site based on a perspective observation image of the subject PA.

  FIG. 3 is a diagram for explaining a specific example of the flow of admission check using the inspection system 100. The horizontal axis is time. A horizontally elongated belt-like region denoted by reference numeral DP1 describes the behavior and handling of the subject PA and its luggage BA that have previously arrived in the passage PW of the inspection system 100, and the operation of the inspection system 100, and is denoted by reference numeral DP2. The horizontally elongated belt-like area describes the behavior and handling of the subject PA and the baggage BA that subsequently arrived at the passage PW of the inspection system 100, and the operation of the inspection system 100. Below the areas DP1 and DP2, an operation pattern TS1 of the upstream first conveyor section 21, an operation pattern TS2 of the second intermediate conveyor section 22, and an operation pattern TS3 of the downstream third conveyor section 23 are shown. ing.

  In the area DP1 related to the previous subject PA, the previous subject PA moves to the luggage storage BP (see FIG. 1B) in the first stage SA1, and in the second stage SA2, the subject PA The BA is placed on the first conveyor unit 21, and the subject PA approaches the authentication information acquisition unit 32 in the third stage SA3. In the fourth stage SA4, the conveyor 20 transfers the load BA from the first conveyor part 21 to the second conveyor part 22 (the previous stage SA4a of the fourth stage), and the inspection part 10 in the second conveyor part 22 is an arithmetic processing part. Under the control of 41, the inside of the baggage BA is inspected transparently (the fourth stage SA4b). In a fifth stage SA5 performed in parallel with the fourth stage SA4, the authentication information acquisition unit 32 performs an authentication process on the authentication medium PM possessed by the previous subject PA under the control of the arithmetic processing unit 41, and also performs body monitoring. The device 31 inspects the body of the subject PA in a non-contact manner under the control of the arithmetic processing unit 41. In the final sixth stage SA6, the previous subject person PA moves to the luggage storage area BP (see FIG. 1B) and receives his / her luggage BA from the third conveyor section 23. Events included in the region DP2 related to the next subject PA, that is, the first to sixth stages SA1 to SA6 are the same as the events included in the region DP1 related to the previous subject PA. However, the area DP2 related to the next target person PA etc. is after the third stage SA3 of the area DP1 related to the previous target person PA etc. has been completed. That is, the time required for the first to third stages SA1 to SA3 is the interval time IT. In this way, when the first conveyor unit 21 is stopped and the package is received, and the first conveyor unit 21 is operated to send the package to the second conveyor unit 22, the first conveyor unit 21 is set to receive the package BA. The repetition period that is a set of the stop time and the operation time set for the first conveyor unit 21 to send the load BA to the next stage is a limiting factor (that is, a bottleneck) that determines the overall processing speed. It can be considered that the throughput is determined. In addition, although the operation | movement of the 2nd conveyor part 22 is stopped temporarily in the time t3-t4 of operation pattern TS2, the operation | movement of the 2nd conveyor part 22 can also be continued. Similarly, the operation of the second conveyor unit 22 is stopped during the time t6 to t7 of the operation pattern TS2, but the operation of the second conveyor unit 22 can be continued.

  FIG. 4 is a flowchart for explaining an outline of the operation of the inspection system 100. The arithmetic processing unit 41 uses the output of the user sensor 33 to determine whether or not the subject person PA moving along the passage PW is approaching the authentication information acquisition unit 32 within a predetermined distance (step S11). ). If the arithmetic processing unit 41 determines that the subject person PA is approaching the authentication information acquisition unit 32 (Yes in step S11), the arithmetic processing unit 41 accepts an authentication process for the subject person PA (step S12). At this time, the arithmetic processing unit 41 operates the conveyor 20 to start transferring the load BA from the first conveyor unit 21 to the second conveyor unit 22. In the authentication process, the authentication information acquisition unit 32 reads the authentication information for the authentication medium PM possessed by the subject person PA. When the authentication information acquisition unit 32 determines that the authentication process has been completed (Yes in step S13), the arithmetic processing unit 41 performs an inspection process (step S14). In the inspection process, the inspection unit 10 inspects whether or not dangerous goods are housed inside the baggage BA transferred to the second conveyor unit 22 and moving in the inspection unit 10. Further, in the inspection process, whether or not the body monitoring device 31 possesses a dangerous substance in the body of the subject PA with respect to the subject PA that has moved from the authentication information acquisition unit 32 to the body monitoring device 31 is determined. Inspect by contact. If no dangerous substance is detected by the inspection unit 10 (No in step S15) and no dangerous substance is detected by the body monitoring device 31 (No in step S16), the arithmetic processing unit 41 ensures authentication. If it is determined that there is no danger and the passage of the subject PA is permitted, and if it is not necessary to continue the operation of the inspection system 100 (No in step S17), the process ends. When it is necessary to continue the operation of the inspection system 100 (Yes in step S17), the arithmetic processing unit 41 returns to step S11 and determines whether or not the subject person PA is approaching the authentication information acquisition unit 32 below a predetermined distance. To do. Here, the case where the operation of the inspection system 100 needs to be continued means that the check is performed by the inspection system 100. For example, the case where the ticket gate operates within a predetermined business time corresponds to this. . When it is not necessary to continue the operation of the inspection system 100, for example, the case where the work of the ticket gate is completed or the case where the ticket gate is closed urgently corresponds. In addition, when it is No in step S11 and it is not determined that the subject person PA is approaching the authentication information acquisition unit 32, the arithmetic processing unit 41 confirms whether or not the operation of the inspection system 100 needs to be continued in step S17. To do. If No in step S13 and the authentication information acquisition unit 32 cannot perform the authentication process, the arithmetic processing unit 41 performs a passage non-permission process (step S18). In this passage non-permission processing, the arithmetic processing unit 41 cannot confirm the qualification that the subject person PA can pass the authentication information acquisition unit 32 by an announcement via the speaker constituting the input / output unit 43 or the display for the user. Notify that. If the answer is Yes in steps S15 and S16, and if a dangerous substance is detected in the baggage BA by the inspection unit 10 or an abnormality such as possession of a dangerous substance is detected in the subject PA by the body monitoring device 31, the arithmetic processing unit 41 As an alarm process, an alarm is displayed on the attendant display of the input / output unit 43, and the occurrence of an abnormality is reported to the remote computer system via the interface unit 44 (step S19).

  The inspection system 100 according to the embodiment described above includes the first conveyor unit 21 that is linked to the inspection unit 10 and operates independently of the second conveyor unit 22 and transports the baggage BA before the inspection. Parallel processing in which the first conveyor unit 21 operates independently of the second conveyor unit 22 to receive and transport the baggage BA before inspection while ensuring the movement of the baggage BA in the inspection unit 10 by the conveyor unit 22 And the throughput of the luggage BA inspection can be improved.

[Second Embodiment]
Hereinafter, a second embodiment obtained by modifying the first embodiment will be described with reference to FIG. Note that in the inspection system 100 according to the present embodiment, description of portions and operations that are common to the inspection system 100 of the first embodiment is omitted.

  In the case of the inspection system 100 of the second embodiment, the second conveyor unit 22 is extended to the position where the third conveyor unit 23 was located without providing the third conveyor unit 23. That is, the rear stage of the second conveyor part 22 extends to the luggage receiving place BR. By not providing the 3rd conveyor part 23, control of the conveyor 20 can be simplified.

[Third Embodiment]
Hereinafter, a third embodiment obtained by modifying the first embodiment will be described with reference to FIG. Note that in the inspection system 100 according to the present embodiment, the description of the parts and operations common to the inspection system 100 of the first embodiment will be omitted.

  In the case of the inspection system 100 according to the third embodiment, in the first conveyor unit 21, a plurality of subjects PA1 and PA2 can receive the parcels B11 and B12 on the first conveyor unit 21 in parallel. I have to. In this case, a plurality of placement areas MA1 and MA2 are provided on the first conveyor portion 21 to enable sorting of the packages B11 and B12. The user sensor 33 is a TOF camera equipped with an image sensor that captures a target image under pulse illumination, a three-dimensional distance image sensor using a MEMS scanner, or the like, and can measure a three-dimensional distance image. By using the user sensor 33, the previous subject PA1 and the package B11 can be measured and tracked in association with each other, and the next subject PA2 and the package B12 can be measured and tracked in association with each other. Can do. In this case, the first conveyor unit 21 does not operate intermittently according to the placement of the loads B11 and B12, but continuously performs a conveying operation at a relatively low speed.

[Others]
The present invention is not limited to the above embodiments, and can be implemented in various modes without departing from the scope of the invention.

  In the above embodiment, the gate unit 30 is provided in the inspection system 100, but the gate unit 30 is not essential, and the body monitoring device 31 and the like can be omitted.

  In the embodiment described above, the inspection unit 10 is an X-ray inspection apparatus. However, the inspection unit 10 is not limited to the X-ray inspection apparatus, but may be various types such as an inspection apparatus using radiation other than the X-ray RL. It can be an inspection device.

  In the first embodiment, the first conveyor unit 21 operates intermittently, and if there is no interference of the load BA with the second conveyor unit 22, the transport speed of the first conveyor unit 21 is set to the second speed. The conveying speed of the conveyor unit 22 can be increased.

  Since the belt portions 5a of the first to third conveyor portions 21 to 23 make the delivery of the load BA smooth, the friction coefficients of the surfaces can be mutually adjusted.

  BA, B1 to B3 ... Luggage, BP ... Luggage storage, BR ... Luggage receiving area, D1 ... Transport direction, DP1, DP2 ... Area, EN ... Entrance, EX ... Exit, PA ... Target person, SA1-SA6 ... Stage, PM ... Authentication medium, PW ... Passage, RL ... X-ray, TS1-TS3 ... Operation pattern, 21-23 ... Conveyor part, 5a ... Belt part, 5b ... Roller part, 5c ... Belt support, 51d, 52d, 53d ... Drive Mechanism: 10: Inspection unit, 20: Conveyor, 21: First conveyor unit, 22: Second conveyor unit, 23: Third conveyor unit, 21s: Package detection unit, 22s, 22p: Package detection unit, 23s: Package detection 30 ... Gate unit 31 ... Physical monitoring device 32 ... Authentication information acquisition unit 33 ... User sensor 39 ... Access detection unit 40 ... Control device 41 ... Calculation processing unit 42 ... Storage unit 43 ... Input / output , 44 ... interface, 100 ... inspection system

Claims (9)

An inspection system for inspecting a package conveyed by a continuously operating conveyor by an inspection unit,
A second conveyor section passing through the inspection section;
In conjunction with the inspection unit, a first conveyor unit that operates independently of the second conveyor unit and conveys a package before inspection ;
A third conveyor part disposed downstream of the second conveyor part and extending to a baggage receiving area;
The inspection system in which the conveyance speed by the third conveyor unit is slower than the conveyance speed by the second conveyor unit .   The inspection system according to claim 1, wherein the first conveyor unit is temporarily stopped after the previous load is conveyed to the inspection unit.   The inspection system according to any one of claims 1 and 2, wherein a conveyance speed by the second conveyor unit and a conveyance speed by the first conveyor unit are different.   The inspection system according to claim 3, wherein a conveyance speed by the first conveyor unit is slower than a conveyance speed by the second conveyor unit. The inspection system according to any one of claims 1 to 4 , further comprising an access detection unit that detects the proximity of the subject, and a control device that controls operations of the conveyor and the inspection unit. The access detection unit includes an authentication information acquisition unit that detects authentication information for an authentication medium,
The control device associates an authentication medium with a package using an authentication information acquisition unit, and starts transfer of the package from the first conveyor unit to the second conveyor unit when authentication is completed. The inspection system according to claim 5 .   After the previous package is transported to the inspection unit, the first conveyor unit is temporarily stopped, and when the authentication information acquisition unit starts authentication processing, the first conveyor is used for transporting the next package. The inspection system according to claim 6, wherein the unit is temporarily stopped and restarted.   The inspection system according to any one of claims 1 to 7, further comprising a body monitoring device that monitors the subject's body in a non-contact manner while wearing clothes. A load detection unit for detecting the load placed on the conveyor; and a control device for controlling operations of the conveyor and the inspection unit;
The said control apparatus is an inspection system as described in any one of Claims 1-8 which controls the operation | movement start or operation | movement stop of the said conveyor based on the output of the said package detection part.

Images