Inspection system and inspection method

Abstract

To provide an inspection system for reducing waiting time for inspection of belongings, and an inspection method.SOLUTION: An inspection system 10 comprises a server, a plurality of detection apparatuses, and a plurality of identification information acquisition apparatuses. One of the server, the detection apparatuses, and the identification information acquisition apparatuses includes: an acquisition unit 11 that acquires target person identification information identifying an inspection target person; a determination unit 12 that determines, based on target person information stored in association with the target person identification information, reference data referred to in inspection of belongings for the inspection target person; an electromagnetic wave transmission / reception unit 14 that emits an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter and receives a reflection wave; and a detection unit 13 that executes, based on a signal of the reflection wave and the reference data, detection processing.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an inspection system and an inspection method. [Background technology]

[0002] Techniques related to the present invention are disclosed in Patent Documents 1 and 2.

[0003] Patent Document 1 discloses a technology for inspecting possessions using radio waves having at least a wavelength between 1 and 30 millimeters, detecting people suspected of carrying dangerous materials in a primary screening in which a large number of people are roughly inspected at once, and then conducting a more detailed inspection of the detected suspicious people in a secondary screening.

[0004] Patent Document 2 discloses a technology that includes multiple types of defect classifiers, such as a defect classifier that specifically detects stains and a defect classifier that specifically detects scratches, and that selects a defect classifier according to the attributes of the object to perform defect detection processing.

[0005] Patent Document 3 discloses a technique for determining the type of visitor based on an image of the visitor and determining the entrance process to be executed for each visitor according to the determined type. The entrance process includes a notification process to a reception terminal and a notification process to a security terminal. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-204513 A [Patent Document 2] JP 2019-106090 A [Patent Document 3] JP 2004-126829 A Summary of the Invention [Problem to be solved by the invention]

[0007] To ensure safety and the like, personal belongings are inspected in various locations. It is hoped that the waiting time for personal belongings inspections can be reduced. An object of the present invention is to reduce the waiting time for personal belongings inspections using a novel method. [Means for solving the problem]

[0008] According to the present invention, An acquisition means for acquiring subject identification information for identifying a test subject; A determination means for determining reference data to be referenced in a test on the test subject based on subject information stored in association with the subject identification information; An electromagnetic wave transmitting / receiving means for irradiating electromagnetic waves having a wavelength of 30 micrometers or more and 1 meter or less and receiving reflected waves; a detection means for performing detection processing based on the reflected wave signal and the reference data; An inspection system is provided having:

[0009] Further, according to the present invention, The computer Obtaining subject identification information that identifies the test subject; determining reference data to be referenced in a test on the test subject based on the subject information stored in association with the subject identification information; It emits electromagnetic waves with wavelengths between 30 micrometers and 1 meter, receives reflected waves, An inspection method is provided in which a detection process is performed based on the reflected wave signal and the reference data. Effect of the Invention

[0010] According to the present invention, the waiting time for baggage inspection can be shortened. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of an inspection system according to an embodiment of the present invention. [Diagram 2]FIG. 2 is a diagram illustrating an example of a hardware configuration of the device according to the present embodiment. [Diagram 3] FIG. 2 is a diagram showing an example of a functional block diagram of the inspection system according to the present embodiment. [Figure 4] FIG. 2 is a diagram illustrating an example of information processed by the inspection system of the present embodiment. [Diagram 5] FIG. 2 is a diagram illustrating an example of information processed by the inspection system of the present embodiment. [Figure 6] FIG. 2 is a diagram illustrating an example of information processed by the inspection system of the present embodiment. [Figure 7] 10A and 10B are diagrams for explaining an example of a process for determining a detection target by the inspection system of the present embodiment. [Figure 8] 10A and 10B are diagrams for explaining an example of a process for determining a detection target by the inspection system of the present embodiment. [Figure 9] FIG. 2 is a diagram illustrating an example of an electromagnetic wave transmitting / receiving unit according to the present embodiment. [Figure 10] 4 is a flowchart showing an example of a process flow of the inspection system of the present embodiment. [Figure 11] FIG. 2 is a diagram showing an example of a functional block diagram of the inspection system according to the present embodiment. [Figure 12] FIG. 2 is a diagram illustrating an example of information processed by the inspection system of the present embodiment. [Figure 13] FIG. 2 is a diagram illustrating an example of information processed by the inspection system of the present embodiment. [Figure 14] 4 is a flowchart showing an example of a process flow of the inspection system of the present embodiment. [Figure 15] FIG. 1 is a diagram illustrating an example of the configuration of an inspection system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are given the same reference numerals and the description will be omitted as appropriate.

[0013] <First embodiment> "overview" As shown in Fig. 1, the inspection system of this embodiment includes a server 1, a plurality of detection devices 2, and a plurality of identification information acquisition devices 3. The plurality of detection devices 2 and the plurality of identification information acquisition devices 3 are installed in any facility where possession inspection is required. Examples of the facility include, but are not limited to, buildings, companies, amusement facilities, airports, train stations, etc. The installation location of the server 1 is not particularly limited.

[0014] In this embodiment, a plurality of inspection sites are set up within one facility, and a detection device 2 and an identification information acquisition device 3 are set up at each inspection site. Then, people who come to the facility are subjected to a multi-stage inspection of their belongings at the plurality of inspection sites. For example, a possible example is one in which a inspection site is set up at the entrance of the facility, and further inspection sites are set up at the entrances of each of a plurality of areas within the facility.

[0015] However, such multi-stage property inspections can result in waste, as the same object is subject to inspection at multiple inspection stations. For example, after a knife inspection is conducted at a inspection station set up at the entrance to a facility, a knife inspection is conducted again at another inspection station set up within the facility.

[0016] When the order of inspection stations that a person passes through is fixed, the above waste can be avoided by setting the objects to be detected in the baggage inspection at each inspection station taking that order into consideration. However, when the order of inspection stations that a person passes through can differ from person to person, this method cannot be adopted.

[0017] Therefore, the inspection system of this embodiment registers objects that were subject to detection in the baggage inspection carried out on each person, i.e., objects for which detection processing has already been carried out, by linking the objects that came to the facility with identification information that distinguishes them from other people.The inspection system then determines the objects to be detected in the baggage inspection at each inspection site for each person based on this registered information.In other words, the objects to be detected in the baggage inspection at each inspection site are customized for each user based on the inspection history up to that point.

[0018] According to the inspection system of the present embodiment, it is possible to reduce the waste of detecting the same object at multiple inspection sites, thereby reducing the load on each inspection site and shortening the waiting time for inspection.

[0019] "Hardware Configuration" Next, an example of the hardware configuration of the inspection system 10 will be described. Fig. 2 is a diagram showing an example of the hardware configuration of the inspection system 10. Each functional unit of the inspection system 10 is realized by any combination of hardware and software, centering on a CPU (Central Processing Unit) of any computer, memory, programs loaded into the memory, a storage unit such as a hard disk for storing the programs (programs stored beforehand at the stage of shipping the device, as well as programs downloaded from storage media such as a CD (Compact Disc) or a server on the Internet, can be stored), and a network connection interface. Those skilled in the art will understand that there are various variations in the realization method and device.

[0020] As shown in Fig. 2, the inspection system 10 has a processor 1A, a memory 2A, an input / output interface 3A, a peripheral circuit 4A, and a bus 5A. The peripheral circuit 4A includes various modules. The inspection system 10 does not have to have the peripheral circuit 4A. Note that the inspection system 10 may be composed of multiple devices that are physically and / or logically separated. When composed of multiple devices that are physically and / or logically separated, each of the multiple devices can have the above hardware configuration.

[0021] The bus 5A is a data transmission path for the processor 1A, memory 2A, peripheral circuit 4A, and input / output interface 3A to transmit and receive data to each other. The processor 1A is an arithmetic processing device such as a CPU or a GPU (Graphics Processing Unit). The memory 2A is a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory). The input / output interface 3A includes an interface for acquiring information from an input device, an external device, an external server, an external sensor, an electromagnetic wave transmitting / receiving device, etc., and an interface for outputting information to an output device, an external device, an external server, an electromagnetic wave transmitting / receiving device, etc. Examples of the input device include a keyboard, a mouse, a microphone, etc. Examples of the output device include a display, a speaker, a printer, a mailer, etc. The processor 1A can issue commands to each module and perform calculations based on the results of those calculations.

[0022] "Function Configuration" Next, a description will be given of the functional configuration of the inspection system 10. An example of a functional block diagram of the inspection system 10 is shown in Fig. 3. As shown in the figure, the inspection system 10 has an acquisition unit 11, a determination unit 12, a detection unit 13, an electromagnetic wave transmission / reception unit 14, a storage unit 15, and a registration unit 16.

[0023] These functional units are provided in any of the server 1, detection device 2, and identification information acquisition device 3 in Fig. 1. There is no particular restriction on which device has each functional unit, and various patterns can be adopted. For example, the identification information acquisition device 3 may have the acquisition unit 11, the detection device 2 may have the electromagnetic wave transmission / reception unit 14, the server 1 may have the determination unit 12, the registration unit 16, and the memory unit 15, and the server 1 or the detection device 2 may have the detection unit 13. The configuration of each functional unit will be described below.

[0024] The storage unit 15 stores subject information. The subject information is information in which subject identification information that identifies people who come to the facility (hereinafter, "test subjects") is linked to the test history of each test subject.

[0025] The subject identification information may be any technology capable of identifying multiple persons from one another. For example, the subject identification information may be characteristic information of each person, such as face information (such as a face image or an appearance feature extracted from a face image), fingerprint information, voiceprint information, iris information, gait information, etc. Alternatively, the subject identification information may be information created for each person, such as a sequence of numbers or letters.

[0026] The inspection history indicates the content of the inspections conducted on each test subject at the inspection site installed in the facility during the past period. For example, the inspection history indicates the objects that were subject to detection in the baggage inspection conducted on each test subject, i.e., the objects that have already been subjected to the detection process.

[0027] The "past period" may be "today", "from the present time until a predetermined time ago", or other. For example, assuming a case where a person repeatedly enters and leaves a facility, the "past period" may be "from the most recent entrance to the facility until the present time".

[0028] FIG. 4 shows a schematic example of subject information stored in memory unit 15. In the illustrated example, a serial number, subject identification information, and a tested object are registered in association with each other. The serial number is identification information given by testing system 10 to a person who has come to the facility. The subject identification information is as described above. The tested object indicates an object that was detected in a possession inspection conducted on each test subject during a past period. Note that in the illustrated example, identification information of the testing site where the test was conducted (G001, etc.) and the time when the test was conducted (8:13, etc.) are registered in association with each tested object, but this information does not need to be registered, and other information may be further registered.

[0029] Such target person information is registered by the registration unit 16, which will be described below. The registration process by the registration unit 16 will be described in detail later.

[0030] Returning to Fig. 3, the acquisition unit 11 acquires subject identification information for identifying a test subject from the test subject who has come to the testing site. The acquisition unit 11 acquires the subject identification information of the test subject before a test is performed on the test subject. The configuration of the acquisition unit 11 corresponds to the configuration of the subject identification information.

[0031] For example, when the subject identification information is face information, iris information, gait information, or the like, the acquisition unit 11 is configured with an imaging device such as a camera. When the subject identification information is fingerprint information, the acquisition unit 11 is configured with a fingerprint sensor (fingerprint reading device). When the subject identification information is a voiceprint, the acquisition unit 11 is configured with a microphone. When the subject identification information is information in which numbers, letters, or the like are arranged, the acquisition unit 11 is configured with an input device such as a short-range wireless communication device, a code reader, a touch panel, a keyboard, a physical button, a microphone, a camera, or the like.

[0032] The determination unit 12 determines reference data to be referred to in the baggage inspection of the test subject based on the subject information (see FIG. 4) stored in the storage unit 15. Specifically, the determination unit 12 determines the detection object to be detected in the baggage inspection for each test subject based on the subject information. The determination unit 12 then determines data related to the determined detection object (shape feature amount, reflected wave feature amount, etc.) as reference data. By determining the detection object of each test subject based on the inspection history of each test subject over a past period, it is possible to efficiently perform a multi-stage baggage inspection using multiple detection devices 2 without waste.

[0033] There are various algorithms for the process of determining the detection target of each test subject based on the test history of each test subject over a past period, but one example will be described below.

[0034] -First decision example- 5, objects detectable by the detection process by the detection device 2 (hereinafter, "detectable objects") are stored in the storage unit 15. An object for which a feature amount to be matched in the detection process is registered is a detectable object. In this example, the determination unit 12 determines at least one of the detectable objects that does not correspond to the inspected object as the detection object.

[0035] For example, a priority order may be assigned to the detectable objects, and the determination unit 12 may determine, in order from the highest priority order, at least one of the detectable objects that does not correspond to the inspected object as the detection object.

[0036] The number of objects to be detected determined at each inspection site may be predetermined. It may be the same for all inspection sites, or may be different for each inspection site. In addition, cases may be divided based on the date and time, day of the week, weather, temperature, the congestion state of each inspection site (for example, recognized from an image taken of the facility), the contents of events held at the facility, etc., and the number of objects to be detected determined when each case applies may be determined in advance. Then, the number of objects to be detected determined may be changed depending on the situation at each timing (which case applies).

[0037] -Second decision example- In this example, objects to be detected during baggage inspections at each of the multiple inspection stations (hereinafter, "mandatory objects") are determined in advance. In order to pass through each inspection station, it is essential to confirm that you are not carrying the mandatory objects determined for each inspection station.

[0038] The storage unit 15 stores mandatory inspection information indicating mandatory objects to be detected in each of the possession inspections at a plurality of inspection sites. An example of the mandatory inspection information is shown in FIG. 6. In the illustrated example, inspection site identification information and mandatory objects are associated and registered. Then, the determination unit 12 determines mandatory objects that do not correspond to inspected objects as objects to be detected.

[0039] A specific example will be described with reference to Fig. 7. In the illustrated example, the required objects at inspection site 1 are "guns and knives," and the required objects at inspection site 2 are "guns, knives, cameras, etc."

[0040] Person A passes through inspection site 1 and then inspection site 2. When passing through inspection site 1, "guns and knives," which are mandatory objects at inspection site 1, are determined to be the objects to be detected. When passing through inspection site 2, the objects to be detected are all of the mandatory objects at inspection site 2, "guns, knives, cameras, etc.", excluding "guns and knives," which were the objects to be detected at inspection site 1, i.e., "cameras, etc."

[0041] Person B passes through inspection point 2 without passing through inspection point 1. When passing through inspection point 2, the mandatory objects at inspection point 2, "guns, knives, cameras, etc.", are determined to be the objects to be detected.

[0042] -Third decision example- In this example, the first and second determination examples are combined. A specific example will be described with reference to FIG. 8. In the illustrated example, no mandatory objects are set at inspection site 1 and inspection site 2. One detection object is determined at inspection site 1 and inspection site 2. The mandatory objects at inspection site 3, which is installed at the entrance to the hall, are "gun, knife, and plastic bottle," and the mandatory objects at inspection site 4, which is installed at the entrance to the security room, are "gun, knife, and smartphone."

[0043] Person A passes through inspection sites in the order of inspection site 1, inspection site 2, and inspection site 3. When passing through inspection site 1, "gun," which has the highest priority among detectable objects, is determined to be the object to be detected. When passing through inspection site 2, "knife," which has the highest priority among detectable objects that do not fall under inspected objects, is determined to be the object to be detected. When passing through inspection site 3, "plastic bottle," which does not fall under inspected objects among the required objects at inspection site 3, "gun, knife, plastic bottle," is determined to be the object to be detected.

[0044] Person B passes through inspection points 1, 2, and 4 in that order. When passing through inspection point 1, "gun," which has the highest priority among detectable objects, is determined to be the object to be detected. When passing through inspection point 2, "knife," which has the highest priority among detectable objects that do not fall under inspected objects, is determined to be the object to be detected. When passing through inspection point 4, "smartphone," which does not fall under inspected objects among the required objects at inspection point 4 ("gun, knife, smartphone"), is determined to be the object to be detected.

[0045] Mr. C passes through inspection site 2 and then inspection site 3. When passing through inspection site 2, "gun," which has the highest priority among the detectable objects, is determined to be the object to be detected. Then, when passing through inspection site 3, "knife and plastic bottle," which are not inspected objects among the required objects at inspection site 3 ("gun, knife, plastic bottle"), are determined to be the object to be detected.

[0046] Up to this point, it has been assumed that an object that has been inspected once is treated as an inspected object, but an object that has been inspected M times (M is an integer equal to or greater than 2) may be treated as an inspected object. The value of M may also be different for each object. For example, for objects with a high detection priority, such as guns and knives, the value of M may be increased so that they are inspected repeatedly. For objects with a low detection priority, the value of M may be decreased to avoid duplicate inspections.

[0047] The electromagnetic wave transmitting / receiving unit 14 irradiates electromagnetic waves (e.g., microwaves, millimeter waves, terahertz waves, etc.) with a wavelength of 30 micrometers or more and 1 meter or less toward a test subject present in a predetermined area, and receives the reflected waves. The electromagnetic wave transmitting / receiving unit 14 is, for example, a radar. The electromagnetic wave transmitting / receiving unit 14 can be configured using any technology. For example, as in the example of FIG. 9, the electromagnetic wave transmitting / receiving unit 14 may be a sensor panel configured by a radar in which multiple antenna elements are arranged. Note that the panel is only an example, and the electromagnetic wave transmitting / receiving unit 14 may be configured in other ways, such as a gate through which the test subject passes, or a booth into which the test subject enters. The electromagnetic wave transmitting / receiving unit 14 is installed in each of multiple testing sites.

[0048] The detection unit 13 determines whether or not a test subject present in a predetermined area is carrying the detection object determined by the determination unit 12, based on the signal of the reflected wave received by the electromagnetic wave transmission / reception unit 14. An example of the determination process will be described below.

[0049] -First processing example- In this example, the detection unit 13 creates a transmission image based on the signal of the reflected wave received by the electromagnetic wave transmission / reception unit 14. Then, the detection unit 13 detects the detection object from the transmission image based on the shape of the object that appears in the transmission image. When the detection object is detected from the transmission image, it is determined that the subject in the specified area is carrying the detected detection object.

[0050] Through advance preparation, shape features of each of a plurality of objects are generated and registered in the inspection system 10. The objects whose shape features are registered become the above-mentioned "detectable objects."

[0051] The detection unit 13 detects the detection object from the transparent image based on the result of matching between the feature amount of the shape of the detection object and the feature amount of the shape that appears in the transparent image. Any object that is not set as a detection object among the detectable objects is excluded from the matching target. These processes by the detection unit 13 may be realized by using an estimation model generated by machine learning based on teacher data consisting of the transparent images and labels of multiple objects, or may be realized by template matching.

[0052] -Second processing example- In this example, the detection unit 13 judges whether the subject in the predetermined area is carrying the detection object based on a feature (reflected wave feature) that appears in the reflected wave signal received by the electromagnetic wave transmission / reception unit 14. When a reflected wave feature that is specific to the detection object is detected from the reflected wave signal, it is judged that the subject in the predetermined area is carrying the detected detection object.

[0053] Through advance preparation, reflected wave feature amounts for each of a plurality of objects are generated and registered in the inspection system 10. The objects for which reflected wave feature amounts are registered become the above-mentioned "detectable objects."

[0054] The detection unit 13 detects reflected wave features specific to the detection object from the reflected wave signal based on the result of matching between the reflected wave features of the detection object and the features appearing in the reflected wave signal. Note that objects that are not set as detection objects among the detectable objects are excluded from the matching targets. These processes by the detection unit 13 may be realized by using an estimation model generated by machine learning based on training data consisting of the reflected wave signals and labels of multiple objects, or may be realized by template matching.

[0055] The detection unit 13 can output the detection result via a predetermined output device (display, speaker, warning lamp, projection device, etc.). The output device may be installed, for example, at each inspection site, and may be configured to present predetermined information to the person being inspected or the manager who manages the inspection. Furthermore, the detection unit 13 may change the output mode of the output device depending on the contents of the detection result (whether or not the object to be detected has been detected). There are various ways of outputting, and any means can be adopted in this embodiment.

[0056] The registration unit 16 acquires the subject identification information acquired by the acquisition unit 11. The registration unit 16 also acquires information indicating the detection target determined by the determination unit 12. Then, the registration unit 16 registers the detection target determined by the determination unit 12 in the subject information (see FIG. 4) as a tested target, linked to the subject identification information of each test subject.

[0057] For example, the registration unit 16 searches the subject identification information acquired by the acquisition unit 11 from the subject information (see FIG. 4). If the subject identification information is found, the registration unit 16 registers the detection object determined by the determination unit 12 as a newly inspected object, linked to the subject identification information. On the other hand, if the subject identification information is not found, the registration unit 16 registers the subject identification information in the subject information, and registers the detection object determined by the determination unit 12 as a newly inspected object, linked to the newly registered subject identification information.

[0058] The registration unit 16 may further register the detection result (whether or not the detection target is detected) by the detection unit 13 in association with the subject identification information of each test subject. The storage unit 15 stores the information.

[0059] Next, an example of the process flow of the inspection system 10 will be described with reference to the flowchart of FIG.

[0060] When the inspection system 10 acquires subject identification information from the test subject prior to a baggage inspection at the inspection site (S10), it acquires subject information (see FIG. 4) linked to the acquired subject identification information (S11). The subject information indicates the test history of the test subject over a past period. Then, based on the acquired subject information, the inspection system 10 determines the detection target to be detected in the baggage inspection of the test subject (S12). After that, the inspection system 10 executes a detection process to detect the determined detection target (S13).

[0061] "Action and effect" The inspection system 10 of this embodiment has multiple detection devices 2 and can determine the detection target for each detection device 2, thereby achieving distributed possession inspection in which the detection target is different for each detection device 2. As a result, the load on each detection device 2 is reduced, and the waiting time for possession inspection at each detection device 2 can be shortened.

[0062] Furthermore, according to the inspection system 10 of this embodiment, it is possible to register objects that have been subject to detection in the baggage inspection carried out on each person, i.e., objects for which detection processing has been carried out, by linking the person who has come to the facility with identification information that distinguishes the person from other people. Then, the inspection system 10 can determine the objects to be detected in the baggage inspection at each inspection site for each person based on this registered information. In other words, it is possible to customize the objects to be detected in the baggage inspection at each inspection site for each user based on the inspection history up to that point.

[0063] According to the inspection system 10 of the present embodiment, it is possible to reduce the waste of the same object being subjected to inspection at multiple inspection sites, thereby reducing the load on each inspection site and shortening the waiting time for inspection.

[0064] <Second embodiment> 11 shows an example of a functional block diagram of the inspection system 10 of the present embodiment. The inspection system 10 of the present embodiment differs from the inspection system 10 of the first embodiment in that an inspection unit 17 is provided.

[0065] The inspection unit 17 performs inspections on the subject of inspection other than the possession inspection based on the reflected wave signal of the electromagnetic wave having a wavelength of 30 micrometers or more and 1 meter or less (hereinafter, "possession inspection based on the reflected wave signal") described in the first embodiment. For example, the inspection unit 17 can perform a body temperature inspection to measure the body temperature of the subject of inspection, a possession inspection using a metal detector, a possession inspection using an odor detector, etc. These inspections can be realized by employing any technology. The inspection unit 17 is installed at each of multiple inspection sites.

[0066] The inspection unit 17 can output the inspection results via a predetermined output device (display, speaker, warning lamp, projection device, etc.). The output device may be installed, for example, at each inspection site, and may be configured to present predetermined information to the person being inspected and the manager who manages the inspection. Furthermore, the inspection unit 17 may change the output mode of the output device depending on the contents of the inspection results. There are various ways of outputting, and any means can be adopted in this embodiment.

[0067] The subject information of this embodiment indicates tests that have been performed on each test subject during a past period (hereinafter, "performed tests"), as shown in Fig. 12. Note that the subject information of this embodiment may further indicate objects that have been subjected to detection processing in a personal belongings inspection based on a reflected wave signal, as described in the first embodiment (see Fig. 4).

[0068] Then, the determination unit 12 determines the test to be performed on the test subject based on the subject information (see FIG. 12) stored in the storage unit 15. By determining the test to be performed on each test subject based on the test history of each test subject over the past period, multi-stage tests at multiple testing sites can be performed efficiently without waste.

[0069] There are various algorithms for the process of determining the detection target of each test subject based on the test history of each test subject over a past period, but one example will be described below.

[0070] -Fourth decision example- Information indicating tests that can be performed by the inspection unit 17 (hereinafter, "executable tests") is stored in advance in the storage unit 15. The executable tests include a possession check based on a reflected wave signal, a body temperature check, a possession check using a metal detector, a possession check using an odor detector, and the like.

[0071] In this example, the determination unit 12 determines, as the test to be executed, at least one of the executable tests that does not correspond to the executed tests.

[0072] For example, priorities may be assigned to the executable tests, and the determination unit 12 may determine, in order of priority, at least one executable test that is not a test that has been executed, as the test to be executed.

[0073] The number of tests to be determined at each testing site may be predetermined. It may be the same for all testing sites, or it may be different for each testing site. In addition, cases may be categorized based on the date and time, day of the week, weather, temperature, the congestion state of each testing site (for example, recognized from an image taken of the facility), the contents of events held at the facility, etc., and the number of tests to be determined when each case applies may be determined in advance. Then, the number of tests to be determined may be changed depending on the situation at each timing (which case applies).

[0074] -Fifth decision example- In this example, the inspections to be performed at each of the multiple inspection stations (hereinafter, "mandatory inspections") are determined in advance. In order to pass each inspection station, it is essential to pass the mandatory inspection determined at each inspection station.

[0075] The storage unit 15 stores mandatory test information indicating mandatory tests to be performed at each of a plurality of testing sites. An example of mandatory test information is shown in FIG. 13. In the illustrated example, testing site identification information and mandatory tests are associated and registered. Then, the determination unit 12 determines mandatory tests that do not correspond to performed tests as tests to be performed.

[0076] -Sixth Decision Example- In this example, the fourth and fifth decision examples are combined.

[0077] Note that a test that has been performed once may be considered a performed test, or a test that has been performed M times (M is an integer equal to or greater than 2) may be treated as a performed test. The value of M may be different for each test. For example, tests that need to be performed repeatedly, such as baggage checks, may have a large value of M so that they are performed repeatedly. And tests that need to be performed less frequently, such as body temperature checks, may have a small value of M to avoid duplicate tests.

[0078] Next, an example of the process flow of the inspection system 10 will be described with reference to the flowchart of FIG.

[0079] When the inspection system 10 acquires subject identification information from the test subject prior to the test at the inspection site (S20), it acquires subject information (see FIG. 12) linked to the acquired subject identification information (S21). The subject information indicates the test history of the test subject over a past period. The inspection system 10 then determines the test to be performed on the test subject based on the acquired subject information (S22). Here, if a possession inspection based on a reflected wave signal is determined, the inspection system 10 may determine the detection target to be detected in the possession inspection based on the processing described in the first embodiment. The inspection system 10 then executes the determined inspection (S23).

[0080] Other configurations of the inspection system 10 of this embodiment are similar to those of the first embodiment.

[0081] According to the inspection system 10 of this embodiment, the same effects as those of the inspection system 10 of the first embodiment are achieved.

[0082] Furthermore, the inspection system 10 of this embodiment realizes distributed inspections in which the inspection contents are different for each inspection site. As a result, the load on each inspection site is reduced, and the waiting time for inspection at each inspection site can be shortened.

[0083] Furthermore, according to the testing system 10 of this embodiment, it is possible to register tests that have been performed on each person, i.e., tests that have already been performed, by linking each person who has visited the facility with identification information that distinguishes them from other people. Then, the testing system 10 can determine the tests to be performed at each testing site for each person based on this registered information. In other words, the tests to be performed at each testing site can be customized for each user based on the testing history up to that point.

[0084] According to the inspection system 10 of the present embodiment, it is possible to reduce waste caused by the same inspection being performed unnecessarily at multiple inspection sites, thereby reducing the load on each inspection site and shortening the waiting time for the inspection.

[0085] <Modification> Modifications applicable to the first and second embodiments will be described below. These modifications also achieve the same effects as the first and second embodiments.

[0086] -First modified example- In Fig. 1, the subject identification information acquired by the identification information acquisition device 3 is transmitted to the server 1 via the detection device 2, but the subject identification information acquired by the identification information acquisition device 3 may be transmitted to the server 1 without passing through the detection device 2. Also, an information collection device that collects information about the testing site may be installed at each testing site. Then, both the detection device 2 and the identification information acquisition device 3 may communicate with the server 1 via this information collection device.

[0087] -Second modified example- As shown in Fig. 15, the inspection system 10 may not have a server 1 and may be composed of only local systems 4 installed at multiple inspection sites. In this case, each of the local systems 4 installed at the multiple inspection sites has an acquisition unit 11, a determination unit 12, a detection unit 13, an electromagnetic wave transmission / reception unit 14, a storage unit 15, and a registration unit 16. The local system 4 may further have an inspection unit 17. The multiple local systems 4 communicate with each other and share information. By any synchronization process, the subject information (see Figs. 4 and 12) held by each of the multiple local systems 4 becomes the same.

[0088] -Third variant- In the above embodiment, the reference data was a feature (shape feature or reflected wave feature) of the detection object. In other words, the reference data was abnormal data that should not be included (data of an object that is prohibited from being brought in). Then, the detection unit 13 performed a process of detecting the abnormal data determined as the reference data from the reflected wave signal.

[0089] In this modified example, the reference data is normal data that is preferably included. The determination unit 12 determines the normal data to be referenced in the test for each test subject based on the subject information. Then, the detection unit 21 performs a detection process to detect an abnormal state (a state different from the state indicated by the normal data) from the reflected wave signal based on the normal data. In this modified example as well, the same action and effect as the above embodiment is achieved.

[0090] -Fourth modified example- In the above embodiment, an object that is prohibited from being brought in is set as the detection object. In this modified example, an object that the user must have is set as the detection object. For example, a police badge or an object that an event participant is required to have is set as the detection object in this modified example. In this modified example, a user who has a detection object detected is allowed to pass through, and a user who has not a detection object detected is not allowed to pass through.

[0091] In addition, an object that is prohibited from being brought in may be set as the first detection object, and an object that the user must have may be set as the second detection object. In this case, the detection results are divided into a plurality of cases, such as "a case where the first detection object is detected and the second detection object is not detected," "a case where the second detection object is detected and the first detection object is not detected," "a case where both the first detection object and the second detection object are detected," and "a case where both the first detection object and the second detection object are not detected." It is a design matter what kind of processing is performed on the user in each case.

[0092] In this specification, "acquisition" includes at least one of the following: "the device itself goes to retrieve data stored in another device or storage medium (active acquisition)" based on user input or based on program instructions, such as receiving data by making a request or inquiry to another device, or accessing another device or storage medium and reading it, and "the device itself inputs data output from another device (passive acquisition)" based on user input or based on program instructions, such as receiving data that is distributed (or transmitted, push notification, etc.), and selecting and acquiring data from among the received data or information, and "editing data (converting it to text, rearranging data, extracting some data, changing the file format, etc.) to generate new data and acquiring the new data."

[0093] A part or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes. 1. A means for acquiring subject identification information for identifying a test subject; A determination means for determining reference data to be referenced in a test on the test subject based on subject information stored in association with the subject identification information; An electromagnetic wave transmitting / receiving means for irradiating electromagnetic waves having a wavelength of 30 micrometers or more and 1 meter or less and receiving reflected waves; a detection means for performing detection processing based on the reflected wave signal and the reference data; An inspection system having 2. The determination means determines a detection target to be detected in a possession search of the test subject, and determines data related to the detection target as the reference data; 1. The inspection system according to claim 1, wherein the detection means performs a process of detecting the object to be detected as the detection process. 3. A plurality of the electromagnetic wave transmitting and receiving means are installed at each of a plurality of inspection sites, and the inspection of personal belongings is carried out at the plurality of inspection sites; The subject information indicates a tested object that is the detected object in the possession inspection conducted on the test subject in a past period, The inspection system according to claim 2, wherein the determination means determines an object other than the inspected object as the detection object. 4. The determining means storing information indicating required objects which are objects to be detected in each of the baggage inspections at a plurality of inspection sites; 3. The inspection system according to claim 3, wherein the required object that does not correspond to the inspected object is determined to be the detection object. 5. An inspection system according to any one of 2 to 4, further comprising a registration means for registering the detection object determined by the determination means as the inspected object in the subject information. 6. The inspection system according to 5, wherein the registration means registers the results of the detection process in association with the subject identification information. 7. The apparatus further comprises an inspection means for performing an inspection other than the inspection of the possessions of the person to be inspected based on the signal of the reflected wave, 7. The testing system according to any one of 2 to 6, wherein the decision means decides the test to be performed on the test subject based on the subject information. 8. A plurality of the inspection means are installed at each of a plurality of inspection sites, and inspections other than the above-mentioned baggage inspection are carried out at the plurality of inspection sites; The subject information indicates a test performed in a past period, 8. The testing system according to claim 7, wherein the determination means determines that tests other than those performed in the past period are to be performed on the subject. 9. The determining means maintaining information indicating tests to be performed at each of a plurality of testing sites; 9. An inspection system as described in 8, which determines, among the tests to be performed, those that do not correspond to tests performed in the past period as the tests to be performed on the subject. 10. The computer: Obtaining subject identification information that identifies the test subject; determining reference data to be referenced in a test on the test subject based on the subject information stored in association with the subject identification information; It emits electromagnetic waves with wavelengths between 30 micrometers and 1 meter, receives reflected waves, An inspection method in which detection processing is performed based on the reflected wave signal and the reference data. [Explanation of symbols]

[0094] 1 Server 2. Detection device 3. Identification information acquisition device 4 Local System 10 Inspection System 11 Acquisition Department 12 Decision Section 13 Detection section 14 Electromagnetic wave transmitting and receiving section 15 Storage section 16 Registration Department 17 Inspection Department 1A Processor 2A Memory 3A Input / Output I / F (Interface) 4A Peripheral circuit 5A Bus

Claims

1. An acquisition means for acquiring subject identification information for identifying a test subject; A determination means for determining reference data to be referenced in a test on the test subject based on subject information stored in association with the subject identification information; An electromagnetic wave transmitting / receiving means for irradiating electromagnetic waves having a wavelength of 30 micrometers or more and 1 meter or less and receiving reflected waves; a detection means for performing detection processing based on the reflected wave signal and the reference data; having The subject information indicates the test history of the test subject.

2. The determination means determines a detection target to be detected in a possession search of the test subject, and determines data related to the detection target as the reference data; The inspection system according to claim 1 , wherein the detection means performs a process of detecting the detection target as the detection process.

3. a plurality of the electromagnetic wave transmitting and receiving means are installed at a plurality of inspection sites, and the inspection of the possessions is carried out at the plurality of inspection sites; The subject information indicates a tested object that is the detected object in the possession inspection conducted on the test subject in a past period, The inspection system according to claim 2 , wherein the determining unit determines an object other than the inspected object as the detection object.

4. The determining means is storing information indicating required objects which are objects to be detected in each of the baggage inspections at a plurality of inspection sites; The inspection system according to claim 3 , wherein the required object that does not fall under the inspected object is determined as the detection object.

5. The inspection system according to claim 2 , further comprising a registration unit that registers the detection target determined by the determination unit as an inspected target in the subject information.

6. The inspection system according to claim 5 , wherein the registration means registers the result of the detection process in association with the subject identification information.

7. The method further includes an inspection means for performing an inspection other than the baggage inspection on the person to be inspected based on the signal of the reflected wave, The testing system according to claim 2 , wherein the determining unit determines the test to be performed on the test subject based on the subject information.

8. A plurality of the inspection means are installed at each of a plurality of inspection sites, and inspections other than the baggage inspection are carried out at the plurality of inspection sites; The subject information indicates a test performed in a past period, The testing system according to claim 7 , wherein the determining means determines tests other than those performed in the past period as tests to be performed on the test subject.

9. The determining means is maintaining information indicating tests to be performed at each of a plurality of testing sites; The testing system according to claim 8 , further comprising: determining, from among the tests to be performed, tests that do not correspond to tests performed in the past period as tests to be performed on the test subject.

10. An inspection system described in any one of claims 1 to 9, wherein the subject information indicates the reference data referenced in a past inspection of the test subject.

11. The detection means performs a detection process to detect a predetermined object based on the signal of the reflected wave and the reference data, The inspection system according to claim 1 , wherein the subject information indicates an object that was the detection target in a past inspection of the inspection subject.

12. The computer Obtaining subject identification information that identifies the test subject; determining reference data to be referenced in a test on the test subject based on the subject information stored in association with the subject identification information; It emits electromagnetic waves with wavelengths between 30 micrometers and 1 meter, receives reflected waves, performing a detection process based on the reflected wave signal and the reference data; A testing method in which the subject information indicates the testing history of the test subject.

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