Detection system

Abstract

To suppress erroneous detection due to reflection when detecting the position of a terminal that has transmitted a signal based on the direction from which the signal arrived.SOLUTION: An arrival direction acquisition unit 111 acquires information including the arrival direction of a signal received by a wireless device 24 of a gate device 2. A detection information acquisition unit 112 acquires information on the result of object detection by a detector 26 of the gate device 2. A terminal position identification unit 113 identifies the position of a portable terminal 3 by combining the angles (arrival directions) of the signals received by multiple wireless devices 24 based on the information supplied from the arrival direction acquisition unit 111. A user position identification unit 114 detects the position in a passage Pa where a passerby U is passing based on the information supplied from the detection information acquisition unit 112. A correspondence determination unit 115 determines whether the position of the portable terminal 3 identified by the terminal position identification unit 113 corresponds to the position of the passerby U identified by the user position identification unit 114.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a detection system that detects users entering and leaving a facility by using a radio that receives signals. [Background technology]

[0002] Detection systems that detect users entering and exiting are used in various facilities where paid services are available, such as railways, theaters, event venues, etc. In recent years, these detection systems that detect users have begun to use wireless devices instead of magnetic recording media as electronic passes such as tickets carried by users.

[0003] For example, in recent years, railway ticket gate systems that use RFID (Radio Frequency Identification) have become widespread.NFC (Near Field Communication), a type of RFID, has become standard on smartphones, and in Japan in particular, it is now possible to use ticket gates using NFC on smartphones.

[0004] However, to determine whether a person is allowed to pass through a gate, it is necessary to identify exactly one person who is about to pass through that gate. For this reason, the above-mentioned conventional technology uses, for example, NFC, which is an RFID that has a communication distance limited to about 10 centimeters.

[0005] However, limiting the communication distance in this way makes it cumbersome for pedestrians to go through a gate by having to find their electronic pass from their clothing, bag, etc., pick it up, and then hold it over the NFC radio in the ticket gate, a series of actions.

[0006] Therefore, instead of limiting the communication range to one person, systems have been devised that detect passersby over a wider range along with their locations. However, by expanding the range in which passersby are detected, these systems also create the need to distinguish between people passing through the gate and others.

[0007] Patent Document 1 discloses a station service system, an automatic ticket gate, and a central management server that allow users carrying smartphones to pass through automatic ticket gates while still holding the smartphone in their pockets. The technology described in this document uses a human detection sensor that detects users passing through the passageway inside the automatic ticket gate. When a user is detected within a predetermined reading range centered on the entrance or exit of the automatic ticket gate, the sensor requests an ID, and controls the opening and closing of the doors depending on whether the ID matches.

[0008] Patent Document 2 discloses a passerby determination system and a passerby determination method that accurately determine and authenticate those who are to be authenticated and those who are not during BAN authentication. The technology described in this document involves installing mat sensors at the entrance and exit for passersby, and using detection information from the mat sensors and area detection sensors to avoid mutual interference between the authenticated person and the person following the authenticated person during BAN authentication.

[0009] Patent Document 3 discloses an automatic ticket gate that can detect approaching people. The technology described in this document installs a proximity sensor so that its focal point faces upward relative to the floor of the passageway, and when this proximity sensor detects a person, it switches its operating mode from a power-saving mode that reduces power consumption to an operational mode that performs ticket gate processing.

[0010] Patent Document 4 discloses a station service system, an automatic ticket gate, and a central management server that allow users carrying smartphones to pass through automatic ticket gates while still holding the smartphone in their pockets. The technology described in this document allows passage through the automatic ticket gate when the ID authenticated by a first authentication request means, which is made when a user's entry into the automatic ticket gate is detected, matches the ID received from the mobile terminal by a second authentication request means, which is made when the user's passage through a predetermined position is detected, and the boarding information determination result is OK. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-129067 [Patent Document 2] Japanese Patent Application Publication No. 2016-218832 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-153251 [Patent Document 4] Japanese Patent Application Laid-Open No. 2014-35618 Summary of the Invention [Problem to be solved by the invention]

[0012] For example, the human detection sensors in Patent Documents 1 and 4, the mat sensor in Patent Document 2, and the proximity sensor in Patent Document 3 cannot detect the location of people other than at entrances and exits. Furthermore, signals emitted by a terminal can be reflected by various objects, and may reach a wireless device via multiple paths, i.e., multipath. Therefore, when a wireless device receives a signal that has been reflected by, for example, a housing, it may erroneously detect the location of the terminal that emitted the signal.

[0013] One object of the present invention is to suppress false detection due to reflection when detecting the position of a terminal that has transmitted a signal based on the direction of arrival of the signal. [Means for solving the problem]

[0014] The present invention provides, as a first aspect, a detection system having a radio that receives a signal from a terminal, a detector that detects a user in a specified space, and a detection device that detects whether the position of the terminal identified based on the direction of arrival of the received signal corresponds to the detected position of the user.

[0015] According to the detection system of the first aspect, when detecting the position of a terminal that has transmitted a signal based on the direction from which the signal arrives, it is possible to suppress erroneous detection due to reflection.

[0016] In the detection system of the first aspect, a configuration may be adopted as a second aspect in which the radio continuously receives the signal, the detector detects the movement of the user, and the detection device detects whether the position of the identified terminal is changing in line with the detected movement of the user.

[0017] According to the detection system of the second aspect, it is possible to reduce false detections compared to when the correspondence between the terminal position and the user position is confirmed only at a certain moment.

[0018] In the detection system of the first aspect, a configuration may be adopted as a third aspect in which the detection device requests authentication of the terminal based on information extracted from the signal when the position of the terminal is identified within a passage included in the space and the user is detected at a predetermined position corresponding to the identified position.

[0019] According to the detection system of the third aspect, when the location of a terminal is erroneously detected, there is no need to authenticate the terminal.

[0020] In the detection system of the third aspect, a configuration having a gate installed in the passageway and a driving device that drives the gate to close it before an unauthenticated terminal passes through the passageway may be adopted as a fourth aspect.

[0021] According to the detection system of the fourth aspect, it is possible to prevent a user carrying an unauthenticated terminal from passing through. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a diagram showing the configuration of a detection system 9 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a block diagram showing an example of the configuration of the control device 1. [Figure 3] FIG. 2 is a block diagram showing an example of the configuration of a server device 4. [Figure 4] FIG. 4 is a diagram showing an example of the configuration of a ticket DB 421. [Figure 5] FIG. 2 is a diagram showing an example of the configuration of a mobile terminal 3 and a gate device 2. [Figure 6] 2 is a diagram showing an example of a plan view of a gate device 2 equipped with a gate 25. FIG. [Figure 7] FIG. 2 is a diagram showing an example of the arrangement of wireless devices 24 in the gate device 2. [Figure 8] FIG. 2 is a diagram showing how the radio device 24 distinguishes signals received by each direction of arrival. [Figure 9] FIG. 2 is a diagram showing an example of an area partitioned by a plurality of wireless devices 24. [Figure 10] 3 is a diagram showing an example of the arrangement of detectors 26 in the gate device 2. FIG. [Figure 11] FIG. 10 is a diagram for explaining erroneous detection due to multipath. [Figure 12] FIG. 2 is a diagram showing an example of the functional configuration of the control device 1. [Figure 13] FIG. 3 is a sequence diagram showing an example of the operation of each component of the detection system 9. [Figure 14] 4 is a flowchart showing an example of the operation of the control device 1 to determine whether to respond to the request. DETAILED DESCRIPTION OF THE INVENTION

[0023] <Embodiment> <Detection system configuration> 1 is a diagram showing the configuration of a detection system 9 according to an embodiment of the present invention. The detection system 9 includes a control device 1, a gate device 2, a mobile terminal 3, a server device 4, and a communication line 5.

[0024] A passerby U is a person (also called a user) who intends to pass through the passage Pa. The portable terminal 3 is a terminal device carried by the passerby U in a pocket or the like of their clothes, and transmits a carrier wave carrying an information signal.

[0025] The gate device 2 is installed in the passage Pa. The gate 25 is a component of the gate device 2. The gate device 2 and the control device 1 detect a carrier wave transmitted from a portable terminal 3 carried by the passerby U to determine whether the passerby U is permitted to pass through the gate 25 installed in the passage Pa. If the passerby U is not authorized to pass through, the gate device 2 closes the gate to prevent the passerby U from passing. On the other hand, if the passerby U is authorized to pass through, the gate device 2 opens the gate to allow the passerby U to pass through. Note that if the portable terminal 3 carried by the passerby U is authenticated by the control device 1 or the server device 4, the gate device 2 determines that the passerby U is authorized to pass through the passage Pa, and if the portable terminal 3 is not authenticated, the gate device 2 determines that the passerby U is not authorized to pass through.

[0026] The carrier wave transmitted by the mobile terminal 3 may be an audible sound, an ultrasonic wave, a light, or the like, but the mobile terminal 3 shown in Fig. 1 transmits radio waves as the carrier wave. This mobile terminal 3 is, for example, a wearable device or a smartphone equipped with a BLE (Bluetooth (registered trademark) Low Energy) function, and transmits BLE advertisements.

[0027] The control device 1 is a device, such as a computer, that controls the gate device 2. The control device 1 shown in FIG.

[0028] The server device 4 is a device that stores ticket data of the passerby U associated with the mobile terminal 3 and provides it to the control device 1 via the communication line 5. The ticket data is data that indicates an electronic ticket (electronic pass) that permits the passerby U to pass through the passage Pa.

[0029] The communication line 5 is a line that communicatively connects the control device 1 and the server device 4 by wire or wirelessly. The communication line 5 shown in Fig. 1 also communicatively connects the mobile terminal 3 and the server device 4 by wireless. The communication line 5 may be, for example, a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, an intranet, or a combination thereof.

[0030] <Control device configuration> Fig. 2 is a block diagram showing an example of the configuration of the control device 1. The control device 1 shown in Fig. 2 has a processor 11, a memory 12, and an interface 13. These are connected to each other so that they can communicate with each other via, for example, a bus.

[0031] The memory 12 includes a RAM (Random Access Memory), a ROM (Read Only Memory), a solid state drive, a hard disk drive, etc., and stores computer programs (hereinafter simply referred to as programs).

[0032] The processor 11 controls the control device 1 by reading and executing a program from the memory 12. The processor 11 is, for example, a CPU (Central Processing Unit). The processor 11 may also be, for example, an FPGA (Field Programmable Gate Array), or may include an FPGA. The processor may also have an ASIC (Application Specific Integrated Circuit) or other programmable logic device, and may perform control using these.

[0033] The interface 13 is a communication circuit that connects the control device 1 to other external devices, etc., by wire or wirelessly. In addition, the interface 13 may connect the control device 1 to various external devices, such as a server device 4, via a communication line 5 so that the control device 1 can communicate with them.

[0034] <Server device configuration> Fig. 3 is a block diagram showing an example of the configuration of the server device 4. The server device 4 shown in Fig. 3 includes a processor 41, a memory 42, and an interface 43. These are connected to each other via, for example, a bus so that they can communicate with each other.

[0035] The processor 41 controls the server device 4 by reading and executing a program from the memory 42. The processor 41 is, for example, a CPU. The processor 41 may also be, for example, an FPGA or may include an FPGA. The processor may also have an ASIC or other programmable logic device and perform control using these.

[0036] The interface 43 is a communication circuit that connects the server device 4 to other external devices, etc., by wire or wirelessly. The interface 43 may connect the server device 4 to various external devices, such as the control device 1 and the mobile terminal 3, via a communication line 5, for example, so as to be able to communicate with each other.

[0037] The memory 42 has a RAM, a ROM, a solid state drive, a hard disk drive, etc., and stores programs. The memory 42 shown in FIG.

[0038] <Ticket DB configuration> 4 is a diagram showing an example of the configuration of the ticket DB 421. The ticket DB 421 is a database that stores the above-mentioned ticket data. The ticket DB 421 shown in FIG. 4 has a mobile terminal correspondence table 4211 and a ticket data table 4212.

[0039] The mobile terminal correspondence table 4211 is a table that associates the items of mobile terminal ID and ticket ID. The mobile terminal ID is identification information of the mobile terminal 3. The ticket ID is identification information of the ticket data. This ticket ID identifies the ticket data given to the passerby U who owns the mobile terminal 3 identified by the mobile terminal ID. In other words, the ticket ID is authentication information related to the passage of the passerby U. This mobile terminal correspondence table 4211 stores one ticket ID for one mobile terminal ID. Note that the mobile terminal correspondence table 4211 may store two or more ticket IDs for one mobile terminal ID.

[0040] The ticket data table 4212 is a table associated with each ticket ID listed in the mobile terminal correspondence table 4211, and stores the contents of the ticket data identified by that ticket ID for each item. The ticket data table 4212 shown in Fig. 4 is a table associated with the ticket ID "T11," and stores items such as "expiration date," "section," "amount," and "status."

[0041] For example, when the processor 41 of the server device 4 receives an inquiry from the control device 1 about a certain mobile terminal ID, the processor 41 refers to the ticket DB 421 and identifies the ticket ID corresponding to this mobile terminal ID. Then, the processor 41 reads the expiration date, section, amount, status, etc. from the ticket data table 4212 corresponding to the identified ticket ID and processes the inquiry.

[0042] If two or more ticket IDs are stored for one mobile terminal ID, the server device 4 may determine the ticket ID indicating one ticket data to be used for the transaction in accordance with a predetermined rule. For example, this rule may be that if two or more ticket IDs are associated with types such as "commuter pass" and "deposit," the commuter pass is used preferentially if the section to be used is within the range of the commuter pass section.

[0043] <Configuration of mobile terminal and gate device> Fig. 5 is a diagram showing an example of the configuration of the mobile terminal 3 and the gate device 2. The mobile terminal 3 shown in Fig. 5 is a smartphone or the like, and includes a processor 31, a memory 32, an interface 33, an operation unit 34, and a display unit 35. These are connected to each other via a bus, for example, so that they can communicate with each other.

[0044] The processor 31 controls the mobile terminal 3 by reading and executing a program from the memory 32. The processor 31 is, for example, a CPU. The processor 31 may also be, for example, an FPGA or may include an FPGA. The processor 31 may also have an ASIC or other programmable logic device and perform control using these.

[0045] The memory 32 includes RAM, ROM, a solid state drive, etc., and stores programs.

[0046] The memory 32 also stores a mobile terminal ID 321. The mobile terminal ID 321 is identification information that identifies the mobile terminal 3, which is the mobile terminal itself. When the mobile terminal 3 is a smartphone, the mobile terminal ID 321 is, for example, a MAC (Media Access Control) address, an IMEI (International Mobile Equipment Identity), a MEID (Mobile Equipment Identifier), an ICCID (IC Card Identifier), an IMSI (International Mobile Subscriber Identity), or the like.

[0047] The operation unit 34 includes operation buttons, a keyboard, a touch panel, a mouse, and other operators for issuing various instructions, and receives operations and sends signals according to the operation content to the processor 31. These operations include, for example, pressing keys on the keyboard and gestures on the touch panel.

[0048] The display unit 35 has a display screen such as a liquid crystal display, and displays images under the control of the processor 31. A transparent touch panel of the operation unit 34 may be placed on top of the display screen. Note that the mobile terminal 3 does not necessarily have the operation unit 34 and the display unit 35. The mobile terminal 3 may be operated by an external device via the interface 33, or may present information to an external device. In this case, the mobile terminal 3 may be a wearable device or terminal device, for example, in the form of a ring, a wristband, or goggles / glasses.

[0049] The interface 33 is a communication circuit that wirelessly connects the mobile terminal 3 to other external devices, etc. The interface 33 may communicably connect the mobile terminal 3 to various external devices via a communication line such as an intranet or the Internet.

[0050] Furthermore, under the control of the processor 31, the interface 33 transmits the mobile terminal ID 321 read from the memory 32 over radio waves. For example, the interface 33 transmits the mobile terminal ID 321 in the above-mentioned advertising signal.

[0051] As described above, the gate device 2 is a device that detects a carrier wave transmitted from the portable terminal 3 carried by a passerby U and determines whether or not the passerby U is permitted to pass. The gate device 2 shown in Fig. 5 includes a processor 21, a memory 22, an interface 23, a wireless device 24, a gate 25, and a detector 26. These are connected to each other so that they can communicate with each other, for example, by a bus.

[0052] The processor 21 controls the gate device 2 by reading and executing a program from the memory 22. The processor 21 is, for example, a CPU. The processor 21 may also be, for example, an FPGA or may include an FPGA. The processor 21 may also have an ASIC or other programmable logic device and perform control using these.

[0053] The interface 23 is a communication circuit that connects the gate device 2 to other external devices, etc., by wire or wirelessly. This interface 23 may communicatively connect the gate device 2 to various external devices via a communication line such as an intranet or the Internet. The interface 23 shown in FIG. 5 communicatively connects the gate device 2 to the control device 1.

[0054] The memory 22 includes RAM, ROM, a solid state drive, a hard disk drive, etc., and stores programs.

[0055] The gate 25 is provided in the passage Pa. That is, the gate 25 is an example of a gate provided in a passage. The gate 25 is a member that is driven under the control of the processor 21 to close the passage Pa. When a passerby U who is determined by the processor 21 to be unauthorized to pass through the passage Pa attempts to pass through the passage Pa, the gate 25 closes the passage Pa to prevent the passerby U from passing through. Note that the gate device 2 may have, for example, an LED (light emitting diode) that emits light when the gate 25 is closed, notifying the passerby U that their passage is blocked. The gate device 2 may also emit a sound from a speaker to notify the passerby U that their passage is blocked.

[0056] The detector 26 is a device that detects a passerby U as an object present in a predetermined space. Here, the detector 26 detects a passerby U who is in the space between the left and right gate devices 2 in the passage Pa, which is the predetermined space. In other words, the detector 26 is an example of a detector that detects a user who is present in the predetermined space.

[0057] The detector 26 is, for example, a photoelectric sensor, a LiDAR (Light Detection And Ranging), an ultrasonic sensor, etc. The detector 26 may be an active sensor that emits electromagnetic waves including light, sound waves, etc. and detects the reflected waves, or a passive sensor that detects heat emitted by a person. The detector 26 is installed facing the passage Pa, detects a passerby U who is about to pass through the passage Pa, and notifies the processor 21 of the detection result.

[0058] The radio 24 receives transmission signals such as advertising signals transmitted from the mobile terminal 3. In other words, the radio 24 is an example of a radio that receives signals from a terminal. The radio 24 is configured, for example, with an array antenna. In this case, the radio 24 identifies the direction of arrival based on the phase difference between the transmission signals received by each antenna constituting the array antenna, using the so-called AoA (Angle of Arrival) method.

[0059] For example, when the wireless device 24 receives a BLE advertising signal transmitted by the mobile terminal 3, the wireless device 24 extracts a CTE (Constant Tone Extension) included at the end of the advertising signal, etc. Then, the wireless device 24 acquires the mobile terminal ID carried in the extracted CTE.

[0060] <Gate device configuration layout> The following diagram shows the space in which each component of the gate device 2 is arranged as an xyz right-handed coordinate space. Among the coordinate symbols shown in the diagram, a dot in a circle represents an arrow pointing from the back of the page to the front. The direction along the x-axis in space is called the x-axis direction. Furthermore, within the x-axis direction, the direction in which the x component increases is called the +x direction, and the direction in which the x component decreases is called the -x direction. For the y and z components, the y-axis, +y direction, -y direction, z-axis, +z direction, and -z direction are defined in accordance with the above definitions.

[0061] FIG. 6 is a diagram showing an example of a plan view of a gate device 2 equipped with a gate 25. That is, FIG. 6 shows the gate device 2 as viewed downward (in the -z direction) from the ceiling side. This gate device 2 is composed of two devices, a right-side device 2R and a left-side device 2L. The right-side device 2R and the left-side device 2L are arranged on either side of a passage Pa. For example, the right-side device 2R shown in FIG. 6 is arranged on the right side as seen from a passerby U passing through the passage Pa in the traveling direction D1 (in the -x direction). Furthermore, the left-side device 2L shown in FIG. 6 is arranged on the left side as seen from the passerby U.

[0062] Gates 25R and 25L (hereinafter, referred to as gates 25 when there is no need to distinguish between them) shown in FIG. 6 are movable members provided along passage Pa. Gate 25R is provided facing passage Pa in the right-side device 2R. Gate 25L is provided facing passage Pa in the left-side device 2L. Gate 25 is, for example, a plate-like member swingably fixed to a housing by a hinge, and is connected to a drive device (not shown) controlled by processor 21. This gate 25 is stored parallel to passage Pa when processor 21 allows passage of pedestrian U, and swings to block passage Pa from the left and right when processor 21 prohibits passage of pedestrian U. Gate 25 is provided to block the progress of pedestrian U proceeding along traveling direction D1.

[0063] That is, the driving device (not shown) that drives this gate 25 is an example of a driving device that drives the gate to close it before an unauthenticated terminal passes through the passage.

[0064] FIG. 7 is a diagram showing an example of the arrangement of the wireless devices 24 in the gate apparatus 2. The wireless devices 24Ra, 24Rb, 24Rc, 24La, 24Lb, and 24Lc (hereinafter, referred to as the wireless devices 24 when there is no need to distinguish between them) shown in FIG. 7 are provided in the right-side device 2R and the left-side device 2L, respectively, at locations facing the passage Pa. The wireless devices 24Ra, 24Rb, and 24Rc (hereinafter, referred to as the wireless device 24R when there is no need to distinguish between them) are provided on the wall side of the right-side device 2R facing the passage Pa, lined up in the -x direction (i.e., the traveling direction D1 shown in FIG. 6) in this order. The wireless devices 24La, 24Lb, and 24Lc (hereinafter, referred to as the wireless device 24L when there is no need to distinguish between them) are provided on the wall side of the left-side device 2L facing the passage Pa, lined up in the -x direction in this order. Each of these wireless devices 24 receives radio waves from the portable terminal 3.

[0065] Fig. 8 is a diagram showing how the radio 24 classifies received signals according to their directions of arrival. As shown in Fig. 8, the radio 24R provided in the right-side device 2R classifies received signals according to their directions of arrival, for example, into three types of angle ranges: v1, v2, and v3. Of the three types, angle range v1 is furthest in the +x direction, and angle range v3 is furthest in the -x direction. Angle range v2 is the range sandwiched between angle range v1 and angle range v3.

[0066] Fig. 9 is a diagram showing an example of regions partitioned by multiple wireless devices 24. Each of the six wireless devices 24 shown in Fig. 9 classifies received signals into three types depending on the direction of arrival. As a result, the space between the right-side device 2R and the left-side device 2L is partitioned into regions R1 to R7 according to the combination of types distinguished by the wireless devices 24. For example, when the wireless devices 24Ra and 24La both receive signals from directions of arrival that fall within the angle range v2 shown in Fig. 8, the gate device 2 determines that the mobile terminal 3 that transmitted these signals is present in region R1.

[0067] The area division to which the position of the mobile terminal 3 belongs is not limited to the above. For example, the gate device 2 may identify the area in which the position of the mobile terminal 3 that transmitted the signal is located by the sum (total) of the arrival angles of the signals received by the two wireless devices 24. For example, if the sum of the arrival angles is less than a threshold, the position of the mobile terminal 3 is identified as being within a circle that passes through the positions of the two wireless devices 24.

[0068] FIG. 10 is a diagram showing an example of the arrangement of the detectors 26 in the gate device 2. The right-side device 2R has eleven detectors 26R1 to 26R11 in a portion facing the passage Pa. The left-side device 2L has eleven detectors 26L1 to 26L11 in a portion facing the passage Pa. The detectors 26R1 to 26R11 and the detectors 26L1 to 26L11 are provided in pairs at positions corresponding to the y-direction on the x-axis. Therefore, for example, of the detectors 26R1 and 26L1 that are provided opposite each other at the same position on the x-axis, one emits a carrier wave such as light or sound along path B1 indicated by a dashed line, and the other receives the carrier wave. Therefore, if an object is present along path B1, the carrier wave is blocked, and the gate device 2 detects the object. Eleven pairs of detectors 26 provided on the left and right sides of the gate device 2 detect a passerby U (object) blocking the eleven routes, so that the gate device 2 can identify the position of the passerby U according to these eleven routes. The detectors 26 are not limited to the so-called transmission type sensors described above, but may be reflective sensors, and are not limited to active sensors, but may be passive sensors. The detectors 26 may also be LiDARs, one each provided on the left and right sides of the gate device 2.

[0069] Fig. 11 is a diagram for explaining erroneous detection due to multipath. As shown in Fig. 11, for example, a passerby Ua is walking in the -y direction (i.e., to the left when viewed from the traveling direction D1) of the left-side device 2L. At this time, a signal transmitted from the portable terminal 3a carried by the passerby Ua travels straight and is received by the wireless device 24Rb, but is received by the wireless device 24Lb after being reflected by the wall surface of the right-side device 2R.

[0070] Therefore, when the gate device 2 attempts to identify the location of the portable terminal 3 based on the directions of arrival of the signals received by the wireless device 24Rb and the wireless device 24Lb, the gate device 2 will erroneously detect a passerby Uah who does not actually exist. If the gate device 2 erroneously detects that the passerby Ua is a passerby Uah passing through the passage Pa, the control device 1 will request authentication from the server device 4 even though no one is actually passing through the passage Pa.

[0071] 10, however, the gate device 2 physically detects a passerby U passing through the passage Pa using multiple pairs of detectors 26. Therefore, the gate device 2 can prevent erroneous detection of the position of the mobile terminal 3 based on the direction of arrival of a signal by verifying the position of the mobile terminal 3 identified by the wireless device 24 using the detection results of the detectors 26. In other words, when the gate device 2 identifies the position of the mobile terminal 3 that transmitted a signal based on the direction of arrival of the signal received by the wireless device 24, it simply compares the detection results with the detection results of the detectors 26 to determine whether or not a passerby U is present at that position.

[0072] <Functional configuration of the control device> Fig. 12 is a diagram illustrating an example of the functional configuration of the control device 1. Processor 11 of the control device 1 reads and executes programs stored in memory 12, thereby functioning as arrival direction acquisition unit 111, detection information acquisition unit 112, terminal position identification unit 113, user position identification unit 114, response determination unit 115, passability determination unit 116, and opening / closing control unit 117 shown in Fig. 12.

[0073] The arrival direction acquisition unit 111 acquires information including the arrival direction of a signal received by the wireless device 24 of the gate device 2 via the interface 13. This information includes not only the arrival direction of the signal received by the wireless device 24, but also strength information indicating the strength of the signal and authentication information carried in the signal itself. Upon acquiring information on the signal received by each wireless device 24, the arrival direction acquisition unit 111 supplies the acquired information to the terminal position identification unit 113.

[0074] The detection information acquisition unit 112 acquires information on the result of object detection by the detector 26 of the gate device 2 via the interface 13. This information includes the position of the passerby U detected by the detector 26. The detection information acquisition unit 112 supplies the acquired information to the user position identification unit 114.

[0075] Based on the information supplied from the arrival direction acquisition unit 111, the terminal location identification unit 113 identifies the location of the mobile terminal 3 by combining the angles (arrival directions) of the signals received by the multiple wireless devices 24. For example, the terminal location identification unit 113 identifies in which of the regions R1 to R7 shown in FIG. 9 the mobile terminal 3 that transmitted the signal is located, based on the combination of the arrival directions of the signals received by each of the wireless devices 24. The terminal location identification unit 113 may store the identified content in the memory 12.

[0076] 12 detects the position in passage Pa where passerby U is passing, based on information supplied from the detection information acquisition unit 112. For example, when the carrier waves of only the pair of detectors 26R1 and 26L1 shown in FIG. 10 are blocked by an object passing through passage Pa, the gate device 2 recognizes that this object is passerby U and determines that passerby U is present in a position overlapping with route B1 shown in FIG. 10. The user position identification unit 114 may store the position of the detected passerby U in the memory 12.

[0077] 12 determines whether the position of the portable terminal 3 identified by the terminal position identification unit 113 corresponds to the position of the passerby U identified by the user position identification unit 114. If the correspondence determination unit 115 determines that the position of the portable terminal 3 and the position of the passerby U correspond to each other, the processor 11 determines that the passerby U carrying the portable terminal 3 has been detected. In other words, the control device 1 having the processor 11 functioning as this correspondence determination unit 115 is an example of a detection device that detects whether the position of the terminal identified based on the direction of arrival of a signal received by the wireless device 24 of the gate device 2 corresponds to the position of the user detected by the detector 26.

[0078] When correspondence determination unit 115 determines that the position of mobile terminal 3 described above corresponds to the position of passerby U, passability determination unit 116 extracts authentication information from the signal supplied from arrival direction acquisition unit 111. Then, passability determination unit 116 requests authentication of mobile terminal 3 based on this authentication information. In other words, control device 1 having processor 11 functioning as passability determination unit 116 is an example of a detection device that, when the position of a terminal is identified within a passage included in a space and a user is detected at a predetermined position corresponding to that position, requests authentication of the terminal that transmitted the signal based on information extracted from the signal received by a wireless device.

[0079] The passability determination unit 116 transmits the authentication information of the portable terminal 3 to the server device 4 via the interface 13 and the communication line 5. Then, based on the authentication information, the passability determination unit 116 inquires of the server device 4 whether or not the portable terminal 3 has the authority to pass through the passage Pa, and receives the result of the inquiry. Upon receiving the result of the inquiry, the passability determination unit 116 determines, based on the result, whether or not the portable terminal 3 is allowed to pass through the passage.

[0080] If the passage of the above-mentioned mobile terminal 3 through the passage Pa is prohibited according to the result of the inquiry received by the passage permission determination unit 116, the opening / closing control unit 117 sends a control signal to the gate device 2 via the interface 13 to close the gate 25.

[0081] <Operation of each component of the detection system> Fig. 13 is a sequence diagram showing an example of the operation of each component of the detection system 9. As shown in Fig. 13, the mobile terminal 3 transmits radio waves indicating an advertising signal (step S101). The gate device 2 receives the radio waves using the wireless device 24 and detects a passerby U in a predetermined space using the detector 26 (step S102).

[0082] The gate device 2 transmits information indicating the direction of arrival of the signal received by the wireless device 24 and authentication information of the signal, together with information on the position of the passerby U detected by the detector 26, to the control device 1 (step S103). Based on the content of the transmitted information, the control device 1 determines whether the position of the mobile terminal 3 indicated by the direction of arrival of the signal received by the wireless device 24 corresponds to the position of the passerby U detected by the detector 26 (this is called a correspondence determination) (step S200).

[0083] If the result of this correspondence determination is that the position of the portable terminal 3 that emitted the signal received by the radio 24 corresponds to the position of the passerby U detected by the detector 26, the control device 1 extracts the portable terminal ID of the portable terminal 3 from the authentication information of the signal (step S104), and queries the server device 4 as to whether or not the portable terminal 3 identified by this portable terminal ID is permitted to pass through the passage Pa (step S105).

[0084] The processor 41 of the server device 4 receives an inquiry from the control device 1, collates the mobile terminal ID with the ticket DB 421 in the memory 42, and authenticates the mobile terminal 3 (step S106). Then, the processor 41 notifies the control device 1 of the authentication result (step S107).

[0085] The control device 1 issues a control instruction to the gate device 2 according to the authentication result (step S108). The gate device 2 drives the gate 25 in accordance with the instruction issued from the control device 1 (step S109). As a result, if the content of the signal indicates that passage through the passage Pa is permitted, the passerby U who possesses the portable terminal 3 is permitted to pass through.

[0086] <Control device response determination operation> 14 is a flow diagram showing an example of the correspondence determination operation of the control device 1. The control device 1 performs correspondence determination in step S200 based on the content of the information transmitted from the gate device 2. This correspondence determination determines whether or not the position of the mobile terminal 3 identified based on the direction of arrival of the signal in a specified space corresponds to the position of the user detected in that space.

[0087] The processor 11 of the control device 1 determines whether or not two or more wireless devices 24 are receiving a signal in the gate device 2 based on the content of the transmitted information (step S201). If it is determined that two or more wireless devices 24 are not receiving a signal (step S201; NO), the processor 11 returns the process to step S201 and waits until additional information is transmitted from the gate device 2.

[0088] On the other hand, when it is determined that two or more wireless devices 24 are receiving a signal (step S201; YES), processor 11 determines whether or not the location area of ​​mobile terminal 3 that transmitted the signal can be identified based on the direction of arrival of the signal received by those wireless devices 24 (step S202). The location area is, for example, areas R1 to R7 shown in FIG. 9, which is an area that includes the position of mobile terminal 3. When it is determined that the location area of ​​mobile terminal 3 can be identified (step S202; YES), processor 11 proceeds to the process at step S203.

[0089] On the other hand, if it is determined that the area where the mobile terminal 3 is located cannot be identified (step S202; NO), the processor 11 returns the process to step S201 and waits.

[0090] In step S203, the processor 11 determines whether the detector 26 in the gate device 2 has detected the position of the passerby U (step S203).

[0091] When it is determined that the detector 26 has not detected the position of the passerby U (step S203; NO), the processor 11 returns the process to step S201 and waits.

[0092] On the other hand, if it is determined that the detector 26 has detected the position of the passerby U (step S203; YES), the processor 11 determines whether the location area of ​​the mobile terminal 3 identified in step S202 corresponds to the position of the passerby U detected in step S203 (step S204).

[0093] If it is determined that the location area of ​​the mobile terminal 3 does not correspond to the position of the passerby U (step S204; NO), the processor 11 determines that the position of the mobile terminal 3 identified by the radio 24 is incorrect, returns the processing to step S201, and waits.

[0094] On the other hand, if it is determined that the location area of ​​the mobile terminal 3 corresponds to the position of the passerby U (step S204; YES), the processor 11 determines whether or not there is only one mobile terminal 3 that has emitted the signal (step S205).

[0095] If it is determined that more than one mobile terminal 3 has emitted a signal (step S205; NO), the processor 11 performs a predetermined abnormality process (step S206), returns the process to step S201, and waits.

[0096] On the other hand, when it is determined that only one mobile terminal 3 has emitted a signal (step S205; YES), the processor 11 ends the process. In this case, the processor 11 recognizes that the detection is not erroneous because the position of the mobile terminal 3 identified based on the direction of arrival of the signal received by the wireless device 24 overlaps with the position of the passerby U detected by the detector 26.

[0097] By performing the processing described above, the detection system 9 according to the present invention can suppress erroneous detection due to reflection when detecting the position of the terminal that transmitted a signal based on the direction from which the signal arrived.

[0098] The configurations, shapes, sizes, and layout relationships described in the above embodiments are merely schematic illustrations to enable understanding and implementation of the present invention. Therefore, the present invention is not limited to the described embodiments, and can be modified in various forms without departing from the scope of the technical ideas set forth in the claims.

[0099] <Modification> The above is a description of the embodiment, but the contents of this embodiment can be modified as follows. In addition, the following modifications can be combined.

[0100] <1> In the above-described embodiment, the detection system 9 includes a right-side device 2R and a left-side device 2L provided on the left and right sides of the aisle Pa so as to face each other, and each has a wireless device 24 provided at a location facing the aisle Pa. However, the locations at which the wireless devices 24 are provided are not limited to this. For example, the two wireless devices 24 described above may be provided in a combination of above and below the aisle Pa, rather than being limited to being provided on the left and right sides of the aisle Pa.

[0101] <2> In the above-described embodiment, the server device 4 receives an inquiry from the control device 1 and authenticates the mobile terminal 3, and the control device 1 receives the authentication result from the server device 4 and controls the gate device 2. However, the authentication of the mobile terminal 3 may be performed by the control device 1. In this case, for example, authentication information may be included in a transmission signal such as an advertising signal contained in radio waves emitted by the mobile terminal 3. In this case, the detection system 9 may not include the server device 4.

[0102] <3> The control device 1 and the gate device 2 may constitute a single device. For example, the functions of the processor 11 and the memory 12 of the control device 1 may be realized by the processor 21 and the memory 22 of the gate device 2.

[0103] <4> In the above-described embodiment, the detection system 9 may detect whether a change in the position of the portable terminal 3 corresponds to the movement of a passerby U who owns the portable terminal 3. In this case, the wireless device 24 of the gate device 2 continuously receives a signal transmitted by the portable terminal 3. Then, the detector 26 of the gate device 2 detects the movement of the passerby U in the passage Pa.

[0104] The control device 1 identifies the change in the position of the mobile terminal 3, that is, the movement path of the mobile terminal 3, from changes in the direction of arrival of signals continuously received by the wireless device 24. The control device 1 also identifies the movement path of the passerby U from changes in the position of the passerby U detected by the detector 26. The control device 1 then determines whether the movement path of the mobile terminal 3 corresponds to the movement path of the passerby U, and if it determines that they correspond, it may determine that the position of the mobile terminal 3 has not been erroneously detected.

[0105] In this modification, the radio 24 is an example of a radio that continuously receives a signal. The detector 26 is an example of a detector that detects the movement of a user. The control device 1 is an example of a detection device that detects whether the position of the identified terminal is changing along with the movement of the detected user. [Explanation of symbols]

[0106] 1...control device, 11...processor, 111...direction of arrival acquisition unit, 112...detection information acquisition unit, 113...terminal position identification unit, 114...user position identification unit, 115...correspondence determination unit, 116...passage permission determination unit, 117...opening / closing control unit, 12...memory, 13...interface, 2...gate device, 21...processor, 22...memory, 23...interface, 24...radio, 25...gate, 26...detector, 2L...left side device, 2R...right side device, 3...mobile terminal, 31...processor, 32...memory, 321...mobile terminal ID, 33...interface, 34...operation unit, 35...display unit, 4...server device, 41...processor, 42...memory, 421...ticket DB, 4211...mobile terminal correspondence table, 4212...ticket data table, 43...interface, 5...communication line, 9...detection system, B1...route, D1...direction of travel, R1 to R7...areas

Claims

1. a radio for receiving a signal from a terminal; a detector that detects a user in a predetermined space; a detection device that detects whether the location of the terminal identified based on the direction of arrival of the received signal corresponds to the detected location of the user; A detection system having:

2. the radio continuously receives the signal; The detector detects movement of the user; The detection device detects whether the identified position of the terminal changes along with the detected movement of the user. The detection system of claim 1 .

3. When the position of the terminal is identified within a passage included in the space and the user is detected at a predetermined position corresponding to the identified position, the detection device requests authentication of the terminal based on information extracted from the signal. The detection system of claim 1 .

4. a gate provided in the passage; a driving device that drives the gate to close it before an unauthorized terminal passes through the passageway; The detection system of claim 3 .

Images