WO2021033317A1 - Wireless tag of entry/exit management system, and entry/exit management system - Google Patents

Wireless tag of entry/exit management system, and entry/exit management system Download PDF

Info

Publication number
WO2021033317A1
WO2021033317A1 PCT/JP2019/032860 JP2019032860W WO2021033317A1 WO 2021033317 A1 WO2021033317 A1 WO 2021033317A1 JP 2019032860 W JP2019032860 W JP 2019032860W WO 2021033317 A1 WO2021033317 A1 WO 2021033317A1
Authority
WO
WIPO (PCT)
Prior art keywords
pair
signal
antenna devices
wireless tag
detection
Prior art date
Application number
PCT/JP2019/032860
Other languages
French (fr)
Japanese (ja)
Inventor
一朗 矢作
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021540611A priority Critical patent/JP7248129B2/en
Priority to PCT/JP2019/032860 priority patent/WO2021033317A1/en
Priority to CN201980099314.2A priority patent/CN114245914B/en
Publication of WO2021033317A1 publication Critical patent/WO2021033317A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit

Definitions

  • the present invention relates to a wireless tag of an entry / exit management system and an entry / exit management system.
  • Patent Document 1 discloses an example of a traffic detection system.
  • the traffic detection system includes a first entrance side antenna device that transmits a detection signal to the entrance side of the gate.
  • the traffic detection system includes a second entrance side antenna device that transmits a detection signal to the entrance side of the gate.
  • the first entrance side antenna device and the second entrance side antenna device are provided on both sides on the entrance side of the gate.
  • the tag transmits a response signal when receiving the detection signals of the first entrance side antenna device and the second entrance side antenna device.
  • the tag transmits a response signal depending on whether or not the detection signal is detected. Therefore, in the first entrance side antenna device and the second inlet side antenna device, it is necessary to adjust the transmission intensity of the detection signal so that the propagation range of the detection signal matches the width of the gate.
  • An object of the present invention is to provide an entry / exit management system and a wireless tag for an entry / exit management system that do not require adjustment of the transmission intensity of a detection signal according to the width of the gate.
  • the wireless tag of the entrance / exit management system is a pair of first antenna devices arranged on both sides of the center of the gate passage provided at the boundary of the management area where the entrance / exit area of the user is managed.
  • a reception unit that receives a detection signal transmitted to the other side, a strength determination unit that determines the signal strength of the detection signal received by the reception unit, and a signal of a detection signal transmitted from a pair of first antenna devices. It includes a transmitting unit that transmits a response signal when the strength determining unit determines that both strengths are signal strengths equal to or higher than a preset first threshold value.
  • the entrance / exit management system is arranged on both sides of the center of the gate passage provided at the boundary of the management area where the entrance / exit area of the user is managed, and each of them sends a detection signal to the other side.
  • a response signal is transmitted when it is determined that both the signal strength of the pair of first antenna devices to be transmitted and the signal strength of the detection signal transmitted from the pair of first antenna devices are the signal strength equal to or higher than the preset first threshold value.
  • a traffic detection device for detecting the passage of the radio tag when at least one of the pair of first antenna devices receives a response signal from the radio tag is provided.
  • the wireless tag of the entry / exit management system is a response signal when it is determined that both signal strengths of the detection signals transmitted from the pair of first antenna devices are signal strengths equal to or higher than the first threshold value. To send. Therefore, it is not necessary to adjust the transmission intensity of the detection signal according to the width of the gate.
  • FIG. It is a block diagram which shows the structure of the entrance / exit management system which concerns on Embodiment 1.
  • FIG. It is a top view of the management area to which the entrance / exit management system which concerns on Embodiment 1 is applied. It is a table which shows the example of the operation of the wireless tag which concerns on Embodiment 1.
  • FIG. It is a hardware block diagram of the main part of the entrance / exit management system which concerns on Embodiment 1.
  • FIG. It is a block diagram which shows the structure of the entrance / exit management system which concerns on Embodiment 2.
  • It is a top view of the management area to which the entrance / exit management system which concerns on Embodiment 2 is applied. It is a table which shows the example of the operation of the wireless tag which concerns on Embodiment 2.
  • It is a flowchart which shows the example of the operation of the wireless tag which concerns on Embodiment 2.
  • FIG. 1 is a block diagram showing a configuration of an entry / exit management system according to the first embodiment.
  • the entry / exit management system 1 is provided in a place having a management area A0.
  • the management area A0 is an area in which the entry and exit of the user are managed.
  • the management area A0 is, for example, an area inside or outside the building.
  • the management area A0 may be, for example, the inside of a room.
  • the entry / exit management system 1 includes an entry / exit management device 2 and a wireless tag 3.
  • the entry / exit management device 2 includes a pair of first antenna devices 4, a sub control device 5, a collation device 6, a switchgear 7, and a main control device 8.
  • each of the pair of first antenna devices 4 has the same configuration as each other.
  • Each of the pair of first antenna devices 4 includes a transmitting antenna 9 and a receiving antenna 10.
  • the transmitting antenna 9 is an antenna that transmits a detection signal.
  • the detection signal is a signal for detecting a user entering or leaving the management area A0.
  • the detection signal is a radio signal generated by a radio wave such as a long wave.
  • the detection signal includes first identification information that identifies the first antenna device 4 that transmits the detection signal.
  • the first identification information is set to different information so that each of the pair of first antenna devices 4 can be identified.
  • the receiving antenna 10 is an antenna that receives a response signal.
  • the response signal is a signal that responds to the detection signal.
  • the response signal is a radio signal generated by a radio wave such as an ultra-high frequency wave.
  • the response signal includes second identification information that identifies the device that transmits the response signal.
  • the first antenna device 4 is, for example, a reading device
  • the sub-control device 5 is a device that controls the operation of each of the pair of first antenna devices 4.
  • the operation of the first antenna device 4 includes, for example, transmission of a detection signal, reception of a response signal, and generation and conversion of a signal to be communicated by radio waves or the like.
  • the collation device 6 is a device that determines whether or not the user is permitted to enter or leave the management area A0.
  • the collation device 6 stores the second identification information of the device possessed by the authorized user.
  • the collation device 6 collates, for example, the stored second identification information with the second identification information included in the response signal read by the first antenna device 4, so that the entry / exit area to / from the management area A0 can be determined. Determine if it is permitted.
  • the opening / closing device 7 is a device that opens / closes so that a user who is permitted to enter / exit the management area A0 can pass through the boundary of the management area A0 based on the determination of the collation device 6.
  • the switchgear 7 has a portion that opens and closes, such as a flapper, bar, or door. Alternatively, the switchgear 7 may have, for example, an electric lock on the door provided at the boundary of the control area A0.
  • the main control device 8 is a device that controls the operation of the entry / exit management device 2.
  • the main control device 8 is connected to the first antenna device 4 through, for example, the sub control device 5 so that the information included in the response signal received by the first antenna device 4 can be acquired.
  • the main control device 8 is connected to the collation device 6 so that the second identification information included in the response signal can be output.
  • the main control device 8 is connected to the switchgear 7 so that the result of the determination by the collation device 6 can be output.
  • the main control device 8 detects the passage of the user based on the result of the determination by the collation device 6.
  • the main control device 8 is an example of a traffic detection device.
  • the wireless tag 3 is a portable device.
  • the wireless tag 3 is possessed by the user.
  • the wireless tag 3 stores the second identification information.
  • the second identification information of the wireless tag 3 is associated with the user who possesses the wireless tag 3.
  • the wireless tag 3 includes a receiving unit 11, a strength determining unit 12, a response control unit 13, and a transmitting unit 14.
  • the receiving unit 11 is a part that receives the detection signal.
  • the intensity determination unit 12 is a unit that determines the signal intensity of the detection signal received by the reception unit 11.
  • the signal strength is, for example, an RSSI value (RSSI: Received Signal Strength Indicator).
  • RSSI Received Signal Strength Indicator
  • the strength determination unit 12 stores a preset first threshold value.
  • the intensity determination unit 12 compares the signal intensity of the received detection signal with the first threshold value.
  • the response control unit 13 is a part that controls the response of the wireless tag 3 to the detection signal received by the reception unit 11.
  • the response of the wireless tag 3 is, for example, the transmission of a response signal.
  • the transmitting unit 14 is a part that transmits a response signal in response to the detection signal received by the receiving unit 11.
  • FIG. 2 is a plan view of a management area to which the entry / exit management system according to the first embodiment is applied.
  • a gate 15 is provided at the boundary of the management area A0.
  • the gate 15 has a passage 16 through which the user can pass.
  • the gate 15 is, for example, a pair of wall-shaped devices provided across the passage 16.
  • the gate 15 may be, for example, a door frame.
  • the user enters and exits the management area A0 through the approach detection area A1.
  • the approach detection area A1 is an area including the center of the passage 16.
  • Each of the pair of first antenna devices 4 is provided at the gate 15. Each of the pair of first antenna devices 4 is arranged on both the left and right sides of the center line C of the passage 16. The pair of first antenna devices 4 face each other. Each of the pair of first antenna devices 4 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the first antenna device 4 on the right side transmits a detection signal to at least the left side. The first antenna device 4 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
  • the detection signal propagates spherically around the source first antenna device 4.
  • the signal strength of the detection signal attenuates as it moves away from the source.
  • the signal strength of the detection signal is below the detection limit of the receiving unit 11 of the wireless tag 3 in the range where the distance from the source is R0 or more.
  • the first threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of first antenna devices 4 in the approach detection area A1.
  • the first threshold value is preset as the signal strength of the detection signal at the point where the distance from the first antenna device 4 is R1.
  • the approach detection area A1 is an area in which the distances from the pair of first antenna devices 4 are both shorter than R1.
  • the sub control device 5 is provided at the gate 15 together with, for example, a pair of first antenna devices 4.
  • the main control device 8 and the collation device 6 may be provided at the gate 15.
  • the main control device 8 and the collation device 6 may be arranged at a location away from the gate 15.
  • a part or all of the sub control device 5, the collation device 6, and the main control device 8 may be mounted on the same hardware.
  • FIG. 2 shows an example in which a user enters the management area A0. In FIG. 2, the user is not shown. In FIG. 2, the movement route of the wireless tag 3 possessed by the user is shown.
  • FIG. 3 is a table showing an example of the operation of the wireless tag according to the first embodiment.
  • the user who possesses the wireless tag 3 approaches the gate 15. At a point separated from both first antenna devices 4 by a distance R0 or more, the receiving unit 11 of the wireless tag 3 does not receive a detection signal from any of the pair of first antenna devices 4. At this time, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the user further approaches the gate 15.
  • the user passes through the point (1).
  • the distance between the point (1) and the first antenna device 4 on the left side is shorter than R0 and greater than or equal to R1.
  • the distance between the point (1) and the first antenna device 4 on the right side is R0 or more.
  • the receiving unit 11 of the wireless tag 3 receives a detection signal having an intensity less than the first threshold value from the first antenna device 4 on the left side.
  • the receiving unit 11 does not receive the detection signal from the first antenna device 4 on the right side.
  • the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the user further approaches the gate 15.
  • the user passes through the point (2).
  • the distance between the point (2) and the first antenna device 4 on the left side is shorter than R0 and greater than or equal to R1.
  • the distance between the point (2) and the first antenna device 4 on the right side is shorter than R0 and greater than or equal to R1.
  • the receiving unit 11 of the wireless tag 3 receives the detection signal from the first antenna device 4 on the left side.
  • the receiving unit 11 also receives the detection signal from the first antenna device 4 on the right side.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is less than the first threshold value.
  • the intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is also less than the first threshold value. When the signal intensities of the detection signals received from the pair of first antenna devices 4 are both lower than the first threshold value, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the user enters the passage 16 of the gate 15.
  • the user passes through the point (3).
  • the distance between the point (3) and the first antenna device 4 on the left side is shorter than R1.
  • the distance between the point (3) and the first antenna device 4 on the right side is shorter than R0 and greater than or equal to R1.
  • the receiving unit 11 of the wireless tag 3 receives the detection signal from both first antenna devices 4.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is equal to or greater than the first threshold value.
  • the intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is less than the first threshold value.
  • the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the point (4) is a point inside the approach detection area A1. That is, the distance between the point (4) and the first antenna device 4 on the left side is shorter than R1. Further, the distance between the point (4) and the first antenna device 4 on the right side is shorter than that of R1.
  • the receiving unit 11 of the wireless tag 3 receives the detection signal from both first antenna devices 4.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is equal to or greater than the first threshold value.
  • the intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is also equal to or higher than the first threshold value.
  • the response control unit 13 causes the transmission unit 14 to transmit the response signal.
  • the transmission unit 14 transmits a response signal including the second identification information.
  • At least one of the pair of first antenna devices 4 receives the response signal by the receiving antenna 10.
  • the main control device 8 acquires the second identification information from the first antenna device 4 through the sub control device 5.
  • the main control device 8 outputs the acquired second identification information to the collation device 6.
  • the collation device 6 collates the stored second identification information with the second identification information output from the main control device 8. When the collated second identification information matches, the collation device 6 determines that the user possessing the wireless tag 3 is permitted to enter and leave the management area A0.
  • the main control device 8 acquires the determination result of the collation device 6.
  • the main control device 8 outputs the determination result of the collation device 6 to the switchgear 7.
  • the switchgear 7 opens the gate 15 so that a user who is permitted to enter and leave the area can pass through the passage 16.
  • the user passes through the gate 15 and enters the management area A0.
  • the main control device 8 detects the passage of the user.
  • the entry / exit management system 1 operates in the same manner as when the user enters the management area A0.
  • the entry / exit management system 1 includes a pair of first antenna devices 4, a wireless tag 3, and a traffic detection device.
  • the pair of first antenna devices 4 are arranged on both sides of the center of the passage 16 of the gate 15.
  • the gate 15 is provided at the boundary of the management area A0.
  • the management area A0 is an area in which the user's entry / exit area is managed.
  • Each of the pair of first antenna devices 4 transmits a detection signal to the other side.
  • the wireless tag 3 transmits a response signal when it is determined that both signal intensities of the detection signals transmitted from the pair of first antenna devices 4 are signal intensities equal to or higher than the first threshold value.
  • the first threshold value is a preset value.
  • the traffic detection device detects the traffic of the user who possesses the radio tag 3.
  • the wireless tag 3 includes a receiving unit 11, a strength determining unit 12, and a transmitting unit 14.
  • the receiving unit 11 receives a detection signal transmitted by each of the pair of first antenna devices 4 to the other side.
  • the intensity determination unit 12 determines the signal intensity of the detection signal received by the reception unit 11.
  • the transmitting unit 14 transmits a response signal when the strength determining unit 12 determines that both signal strengths of the detection signals transmitted from the pair of first antenna devices 4 are signal strengths equal to or higher than the first threshold value.
  • the wireless tag 3 does not transmit a response signal at a position away from the gate 15. Therefore, the approach detection area A1 is formed inside the gate 15 without the need to adjust the transmission intensity of the detection signal according to the width of the gate 15. Further, at the boundary of the approach detection area A1, the signal strength of the detection signal is larger than the detection limit of the receiving unit 11. Therefore, the determination of approach to the approach detection area A1 is not easily affected by noise or the like. Further, the wireless tag 3 does not transmit an unnecessary response signal when it is away from the intrusion detection area A1. Therefore, the power consumption of the wireless tag 3 can be suppressed.
  • the detection signal may be a radio wave in a frequency band other than the long wave. Further, the response signal may be a radio wave in a frequency band other than ultra high frequency.
  • each of the pair of first antenna devices 4 may alternately transmit the detection signals so as to avoid interference of the detection signals.
  • the wireless tag 3 is used, for example, when the signal strengths of the detection signals received from both of the pair of first antenna devices 4 during one cycle in which the detection signals are alternately transmitted are both equal to or higher than the first threshold value. , Sends a response signal.
  • each of the pair of first antenna devices 4 may transmit detection signals having different frequencies from each other so as to avoid interference of the detection signals.
  • FIG. 4 is a hardware configuration diagram of a main part of the entry / exit management system according to the first embodiment.
  • Each function of the entry / exit management system 1 can be realized by a processing circuit.
  • the processing circuit includes at least one processor 1b and at least one memory 1c.
  • the processing circuit may include at least one dedicated hardware 1a with or as a substitute for the processor 1b and the memory 1c.
  • each function of the entry / exit management system 1 is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. The program is stored in the memory 1c. The processor 1b realizes each function of the entry / exit management system 1 by reading and executing the program stored in the memory 1c.
  • the processor 1b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, a microcomputer, and a DSP.
  • the memory 1c is composed of, for example, a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM.
  • the processing circuit is provided with dedicated hardware 1a, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
  • Each function of the entry / exit management system 1 can be realized by a processing circuit. Alternatively, each function of the entry / exit management system 1 can be collectively realized by a processing circuit. For each function of the entry / exit management system 1, a part may be realized by the dedicated hardware 1a, and the other part may be realized by software or firmware. In this way, the processing circuit realizes each function of the entry / exit management system 1 by hardware 1a, software, firmware, or a combination thereof.
  • Embodiment 2 The differences between the second embodiment and the examples disclosed in the first embodiment will be described in particular detail. As for the features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
  • FIG. 5 is a block diagram showing the configuration of the entry / exit management system according to the second embodiment.
  • the entry / exit management device 2 includes a pair of first antenna devices 4, a pair of second antenna devices 17, two sub control devices 5, a collation device 6, a switchgear 7, and a main control device 8. Be prepared.
  • each of the pair of second antenna devices 17 has the same configuration as each other.
  • Each of the pair of second antenna devices 17 includes a transmitting antenna 9 and a receiving antenna 10.
  • the second antenna device 17 is, for example, a reading device.
  • Each of the four antenna devices of the pair of first antenna devices 4 and the pair of second antenna devices 17 may have the same configuration as each other.
  • One sub-control device 5 controls the operation of each of the pair of first antenna devices 4.
  • the other sub-control device 5 controls the operation of each of the pair of second antenna devices 17. Similar to the first antenna device 4, the operation of the second antenna device 17 includes, for example, transmission of a detection signal, reception of a response signal, and generation and conversion of a signal to be communicated by radio waves or the like.
  • the main control device 8 is connected to the first antenna device 4 through, for example, the sub control device 5 so that the information included in the response signal received by the first antenna device 4 can be acquired. Further, the main control device 8 is connected to the second antenna device 17 through, for example, the sub control device 5 so that the information included in the response signal received by the second antenna device 17 can be acquired.
  • the strength determination unit 12 of the wireless tag 3 stores preset first threshold values and second threshold values.
  • the second threshold value is a value having an intensity lower than that of the first threshold value.
  • the intensity determination unit 12 compares the signal intensity of the received detection signal with the first threshold value or the second threshold value.
  • the response control unit 13 manages the operating state of the wireless tag 3.
  • the operating state of the wireless tag 3 includes, for example, a permitted state and a prohibited state.
  • the permission state is a state in which transmission of the response signal by the transmission unit 14 is permitted.
  • the prohibition state is a state in which transmission of the response signal by the transmission unit 14 is prohibited.
  • the response control unit 13 prohibits and cancels the transmission of the response signal by switching the operating state of the wireless tag 3.
  • FIG. 6 is a plan view of a management area to which the entry / exit management system according to the second embodiment is applied.
  • the passage 16 of the gate 15 extends from the entrance of the gate 15 to the exit of the gate 15.
  • the entrance of the gate 15 is a portion where the user enters the passage 16.
  • the exit of the gate 15 is a portion where the user exits the passage 16.
  • the departure detection area A2 is an area including the approach detection area A1. In this example, the departure detection area A2 is an area that covers the entire passage 16 of the gate 15.
  • Each of the pair of first antenna devices 4 is provided on the inlet side of the gate 15. Each of the pair of first antenna devices 4 is arranged on both the left and right sides of the center line C of the passage 16. The pair of first antenna devices 4 face each other. Each of the pair of first antenna devices 4 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the first antenna device 4 on the right side transmits a detection signal to at least the left side. The first antenna device 4 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
  • Each of the pair of second antenna devices 17 is provided on the exit side of the gate 15. Each of the pair of second antenna devices 17 is arranged on the left and right sides of the center line C of the passage 16. The pair of second antenna devices 17 face each other. Each of the pair of second antenna devices 17 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the second antenna device 17 on the right side transmits a detection signal to at least the left side. The second antenna device 17 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
  • the detection signal propagates spherically around the source first antenna device 4 or the second antenna device 17.
  • the signal strength of the detection signal attenuates as it moves away from the source.
  • the signal strength of the detection signal is below the detection limit of the receiving unit 11 of the wireless tag 3 in the range where the distance from the source is R0 or more.
  • the first threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of first antenna devices 4 in the approach detection area A1.
  • the first threshold value is preset to the signal strength of the detection signal at the point where the distance from the first antenna device 4 is R1.
  • the approach detection area A1 is an area in which the distance from the pair of first antenna devices 4 is shorter than that of R1.
  • the second threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of second antenna devices 17 in the detachment detection area A2.
  • the second threshold value is preset to the signal strength of the detection signal at the point where the distance from the second antenna device 17 is R2.
  • the approach detection area A1 is an area in which the distance from the pair of second antenna devices 17 is shorter than that of R2.
  • the distance R2 is longer than the distance R1.
  • FIG. 6 shows an example in which the user enters the management area A0.
  • the pair of first antenna devices 4 is a pair of antenna devices near the outside of the management area A0.
  • the pair of second antenna devices 17 is a pair of antenna devices close to the inside of the management area A0.
  • the user is not shown.
  • the movement route of the wireless tag 3 possessed by the user is shown.
  • FIG. 7 is a table showing an example of the operation of the wireless tag according to the second embodiment.
  • the user who possesses the wireless tag 3 approaches the gate 15. Before the user enters the gate 15, the operating state of the wireless tag 3 is in the permitted state. At a point where the distance from both first antenna devices 4 is R0 or more, the receiving unit 11 of the wireless tag 3 does not receive the detection signal from any of the pair of first antenna devices 4. At this time, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the user further approaches the gate 15.
  • the user passes through the point (1).
  • the distance between the point (1) and the pair of first antenna devices 4 is shorter than R0 and greater than or equal to R2.
  • the distance between the point (1) and the pair of second antenna devices 17 is R0 or more.
  • the receiving unit 11 receives the detection signal from both first antenna devices 4.
  • the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17.
  • the strength determination unit 12 determines the signal strength of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the second threshold value.
  • the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the first threshold value.
  • the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the user further approaches the gate 15.
  • the user passes through the point (2).
  • the distance between the point (2) and the pair of first antenna devices 4 is shorter than R2 and greater than or equal to R1.
  • the distance between the point (2) and the pair of second antenna devices 17 is R0 or more.
  • the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4.
  • the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17. Since the detection signals have been received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signals.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the first threshold value.
  • the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
  • the point (3) is a point inside the approach detection area A1.
  • the distance between the point (3) and the pair of first antenna devices 4 is shorter than that of R1.
  • the distance between the point (3) and the pair of second antenna devices 17 is R0 or more.
  • the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4.
  • the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17. Since the detection signals have been received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signals.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both equal to or higher than the first threshold value.
  • the response control unit 13 When the signal intensities of the detection signals received from the pair of first antenna devices 4 are both equal to or higher than the first threshold value, the response control unit 13 causes the transmission unit 14 to transmit the response signal. At this time, the response control unit 13 switches the state of the wireless tag 3 from the permitted state to the prohibited state.
  • the transmission unit 14 transmits a response signal including the second identification information.
  • At least one of the pair of first antenna devices 4 receives the response signal by the receiving antenna 10.
  • the main control device 8 acquires the second identification information from the first antenna device 4 through the sub control device 5.
  • the main control device 8 outputs the acquired second identification information to the collation device 6.
  • the collation device 6 collates the stored second identification information with the second identification information output from the main control device 8. When the collated second identification information matches, the collation device 6 determines that the user possessing the wireless tag 3 is permitted to enter and leave the management area A0.
  • the main control device 8 acquires the determination result of the collation device 6.
  • the main control device 8 outputs the determination result of the collation device 6 to the switchgear 7. Based on the determination result of the collation device 6, the switchgear 7 opens the gate 15 so that a user who is permitted to enter and leave the area can pass through the passage 16.
  • the main control device 8 detects the passage of the user.
  • the user passes through the passage 16 of the gate 15.
  • the user passes through the point (4).
  • the distance between the point (4) and the pair of first antenna devices 4 is shorter than R2 and greater than or equal to R1.
  • the distance between the point (4) and the pair of second antenna devices 17 is both shorter than R2 and greater than or equal to R1.
  • the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4.
  • the receiving unit 11 also receives the detection signal from both of the pair of second antenna devices 17.
  • the strength determination unit 12 determines the signal strength of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 and the pair of second antenna devices 17 are both equal to or higher than the second threshold value. When at least one of the received detection signals has a signal strength of the second threshold value or more, the response control unit 13 keeps the state of the wireless tag 3 in the prohibited state.
  • the user further passes through the passage 16 of the gate 15.
  • the user passes through the point (5).
  • the distance between the point (5) and the pair of first antenna devices 4 is R0 or more.
  • the distance between the point (5) and the pair of second antenna devices 17 is both shorter than R1.
  • the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4.
  • the receiving unit 11 receives the detection signal from both of the pair of second antenna devices 17.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the first threshold value.
  • the response control unit 13 maintains the state of the wireless tag 3 in the prohibited state.
  • the response control unit 13 is the transmission unit 14. Does not send a response signal to.
  • the user passes through the passage 16 of the gate 15.
  • the user passes through the point (6).
  • the distance between the point (6) and the pair of first antenna devices 4 is R0 or more.
  • the distance between the point (6) and the pair of second antenna devices 17 is both shorter than R2 and greater than or equal to R1.
  • the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4.
  • the receiving unit 11 receives the detection signal from both second antenna devices 17.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the second threshold value.
  • the response control unit 13 maintains the state of the wireless tag 3 in the prohibited state.
  • the user leaves the gate 15 inside the management area A0.
  • the user passes through the point (7).
  • the distance between the point (7) and the pair of first antenna devices 4 is R0 or more.
  • the distance between the point (7) and the pair of second antenna devices 17 is both shorter than R0 and greater than or equal to R2.
  • the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4.
  • the receiving unit 11 receives the detection signal from both second antenna devices 17.
  • the intensity determination unit 12 determines the signal intensity of the received detection signal.
  • the intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both less than the second threshold value.
  • the response control unit 13 switches the state of the wireless tag 3 to the permitted state. At this time, since the wireless tag 3 is outside the intrusion detection area A1, the transmitting unit 14 does not transmit a response signal.
  • the user further separates from the gate 15 inside the management area A0.
  • the user passes through the point (8).
  • the distance between the point (8) and the pair of first antenna devices 4 is R0 or more.
  • the distance between the point (7) and the pair of second antenna devices 17 is R0 or more.
  • the receiving unit 11 does not receive the detection signal from any of the four antenna devices of the pair of first antenna devices 4 and the pair of second antenna devices 17.
  • the response control unit 13 may switch the state of the wireless tag 3 to the permitted state. Good.
  • the entry / exit management system 1 operates in the same manner as when the user enters the management area A0.
  • the pair of first antenna devices 4 is a pair of antenna devices close to the inside of the management area A0.
  • the pair of second antenna devices 17 is a pair of antenna devices near the outside of the management area A0.
  • FIG. 8 is a flowchart showing an example of the operation of the wireless tag according to the second embodiment.
  • step S01 the response control unit 13 determines whether the state of the wireless tag 3 is a prohibited state.
  • the determination result is No
  • the operation of the wireless tag 3 proceeds to step S02.
  • the determination result is Yes
  • the operation of the wireless tag 3 proceeds to step S07.
  • step S02 the wireless tag 3 determines whether the receiving unit 11 has received the detection signal from both first antenna devices 4. When the determination result is No, the operation of the wireless tag 3 proceeds to step S01. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S03.
  • step S03 the intensity determination unit 12 determines the intensity of both detection signals received by the reception unit 11. After that, the operation of the wireless tag 3 proceeds to step S04.
  • step S04 the intensity determination unit 12 determines whether the signal intensities of the received detection signals are both equal to or higher than the first threshold value. When the determination result is No, the operation of the wireless tag 3 proceeds to step S01. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S05.
  • step S05 the transmission unit 14 transmits a response signal. After that, the operation of the wireless tag 3 proceeds to step S06.
  • step S06 the response control unit 13 switches the state of the wireless tag 3 to the prohibited state. After that, the operation of the wireless tag 3 proceeds to step S01.
  • step S07 the wireless tag 3 determines whether the receiving unit 11 has received the detection signal from at least one of the pair of first antenna devices 4 and the pair of second antenna devices 17.
  • the operation of the wireless tag 3 proceeds to step S10.
  • the determination result is Yes, the operation of the wireless tag 3 proceeds to step S08.
  • step S08 the intensity determination unit 12 determines the intensity of the detection signal received by the reception unit 11. After that, the operation of the wireless tag 3 proceeds to step S09.
  • step S09 the intensity determination unit 12 determines whether at least one of the detection signals received by the reception unit 11 has a signal intensity equal to or higher than the second threshold value.
  • the determination result is Yes
  • the operation of the wireless tag 3 proceeds to step S01.
  • the determination result is No
  • the operation of the wireless tag 3 proceeds to step S10.
  • step S10 the response control unit 13 switches the state of the wireless tag 3 to the permitted state. After that, the operation of the wireless tag 3 proceeds to step S01.
  • the receiving unit 11 receives the detection signal transmitted by each of the pair of second antenna devices 17 to the other side.
  • the pair of second antenna devices 17 are arranged on both sides of the pair of first antenna devices 4 on the exit side of the gate 15 with the center of the passage 16 interposed therebetween.
  • the transmission unit 14 is prohibited from transmitting the response signal after transmitting the response signal.
  • the transmission unit 14 releases the prohibition of transmission of the response signal based on the signal strength of the detection signal transmitted by at least one of the pair of first antenna devices 4 and the pair of second antenna devices 17.
  • the transmitting unit 14 does not retransmit the response signal while the user is passing through the passage 16 of the gate 15. Therefore, the power consumption of the wireless tag 3 can be suppressed. Further, the wireless tag 3 can detect the retention based on the signal strength of the detection signal even when the user stays in the middle of the passage 16. Therefore, even if the user passes through a region where the signal strength of the detection signal by the antenna device on the exit side of the gate 15 is high after staying in the middle of the passage 16, the transmitting unit 14 does not retransmit the response signal.
  • the passage of the user is detected by the antenna device on the entrance side of the gate 15 receiving a response signal in response to the detection signal from the antenna device on the entrance side of the gate 15.
  • the antenna device on the exit side of the gate 15 receives a response signal in response to the detection signal from the antenna device on the exit side of the gate 15 to enter the management area A0. False detection of exit is suppressed.
  • the transmitting unit 14 releases the prohibition of transmitting the response signal when the signal strength of the detection signal transmitted by the pair of first antenna devices 4 and the pair of second antenna devices 17 is lower than the second threshold value. ..
  • the second threshold is a preset value lower than the first threshold.
  • the prohibition of transmission of the response signal is released in the area where the transmission unit 14 does not retransmit the response signal. As a result, the direction of passage of the user can be detected with higher accuracy.
  • the transmission unit 14 is released from the prohibition of transmission of the response signal when neither of the detection signals transmitted by the pair of first antenna devices 4 and the pair of second antenna devices 17 is detected.
  • the transmission of the response signal by the transmission unit 14 is controlled regardless of the second threshold value.
  • the parameters set in the wireless tag 3 do not increase. Therefore, the setting of the entry / exit management system 1 is less likely to be complicated.
  • the wireless tag 3 does not have to control the transmission of the response signal by comparing the signal strength of the received detection signal with the second threshold value.
  • the propagation range of the detection signal from the pair of first antenna devices 4 and the propagation range of the detection signal from the pair of second antenna devices 17 overlap.
  • the response control unit 13 is prohibited until at least one of the signal strengths of the detection signals from the pair of second antenna devices 17 becomes equal to or higher than the second threshold value. May be maintained.
  • the response control unit 13 can use the wireless tag 3 in the middle of the passage 16. Do not switch the state to the allowed state. Therefore, even in the long gate 15, the direction of passage of the user can be detected with higher accuracy.
  • each of the four antenna devices may transmit the detection signal in order so as to avoid interference of the detection signal.
  • the response control unit 13 controls the state of the wireless tag 3 based on the signal strength of the detection signals received from each of the four antenna devices during one cycle in which the detection signals are sequentially transmitted, for example. May be good.
  • each of the four antenna devices may emit detection signals having different frequencies so as to avoid interference of the detection signals.
  • the entry / exit management system according to the present invention can be applied to a management area in which the entry / exit area of a user is managed.
  • the wireless tag according to the present invention can be applied to the entrance / exit management system.
  • 1 entry / exit management system 1 entry / exit management system, 2 entry / exit management device, 3 wireless tag, 4 1st antenna device, 5 sub control device, 6 collation device, 7 opening / closing device, 8 main control device, 9 transmitting antenna, 10 receiving antenna, 11 receiving Unit, 12 strength judgment unit, 13 response control unit, 14 transmitter unit, 15 gate, 16 passage, 17 second antenna device, 1a hardware, 1b processor, 1c memory, A0 management area, A1 approach detection area, A2 departure detection Area, C center line

Abstract

Provided are an entry/exit management system (1) and a wireless tag (3) that do not require the adjustment of transmission strengths of detection signals in accordance with the width of a gate (15). In this entry/exit management system (1), a pair of first antenna devices (4) is arranged on opposite sides of a gate (15) with the center of a passageway of the gate sandwiched therebetween. The gate (15) is provided at a boundary of a management area (A0). The management area (A0) is an area in which the entry and exit of users are managed. The pair of first antenna devices (4) each sends a detection signal to the other side. A wireless tag (3) receives the detection signals sent from the respective first antenna devices (4). The wireless tag (3) sends a response signal when both signal strengths of the detection signals from the pair of first antenna devices (4) have signal strengths equal to or greater than a first threshold.

Description

入退管理システムの無線タグおよび入退管理システムWireless tag of entry / exit management system and entry / exit management system
　本発明は、入退管理システムの無線タグおよび入退管理システムに関する。 The present invention relates to a wireless tag of an entry / exit management system and an entry / exit management system.
　特許文献１は、通行検出システムの例を開示する。通行検出システムは、ゲートの入口側に検出信号を発信する第１入口側アンテナ装置を備える。通行検出システムは、ゲートの入口側に検出信号を発信する第２入口側アンテナ装置を備える。第１入口側アンテナ装置および第２入口側アンテナ装置は、ゲートの入口側において両側に設けられる。通行検出システムにおいて、タグは、第１入口側アンテナ装置と第２入口側アンテナ装置との検出信号を受信するときに応答信号を発信する。 Patent Document 1 discloses an example of a traffic detection system. The traffic detection system includes a first entrance side antenna device that transmits a detection signal to the entrance side of the gate. The traffic detection system includes a second entrance side antenna device that transmits a detection signal to the entrance side of the gate. The first entrance side antenna device and the second entrance side antenna device are provided on both sides on the entrance side of the gate. In the traffic detection system, the tag transmits a response signal when receiving the detection signals of the first entrance side antenna device and the second entrance side antenna device.
国際公開第２０１９／０３０８２１号International Publication No. 2019/03821
　しかしながら、特許文献１の通行検出システムにおいて、タグは、検出信号の検出の有無によって応答信号を発信する。このため、第１入口側アンテナ装置および第２入口側アンテナ装置において、検出信号の伝播範囲がゲートの幅に合うように、検出信号の送信強度の調整が必要となる。 However, in the traffic detection system of Patent Document 1, the tag transmits a response signal depending on whether or not the detection signal is detected. Therefore, in the first entrance side antenna device and the second inlet side antenna device, it is necessary to adjust the transmission intensity of the detection signal so that the propagation range of the detection signal matches the width of the gate.
　本発明は、このような課題を解決するためになされた。本発明の目的は、ゲートの幅に合わせた検出信号の送信強度の調整を必要としない入退管理システムおよび入退管理システムの無線タグを提供することである。 The present invention has been made to solve such a problem. An object of the present invention is to provide an entry / exit management system and a wireless tag for an entry / exit management system that do not require adjustment of the transmission intensity of a detection signal according to the width of the gate.
　本発明に係る入退管理システムの無線タグは、利用者の入退域が管理される管理領域の境界に設けられたゲートの通路の中央を挟んで両側に配置される一対の第１アンテナ装置の各々が他方の側に発信する検出信号を受信する受信部と、受信部が受信する検出信号の信号強度を判定する強度判定部と、一対の第１アンテナ装置から発信された検出信号の信号強度の両方が予め設定された第１閾値以上の信号強度であると強度判定部が判定するときに応答信号を発信する発信部と、を備える。 The wireless tag of the entrance / exit management system according to the present invention is a pair of first antenna devices arranged on both sides of the center of the gate passage provided at the boundary of the management area where the entrance / exit area of the user is managed. A reception unit that receives a detection signal transmitted to the other side, a strength determination unit that determines the signal strength of the detection signal received by the reception unit, and a signal of a detection signal transmitted from a pair of first antenna devices. It includes a transmitting unit that transmits a response signal when the strength determining unit determines that both strengths are signal strengths equal to or higher than a preset first threshold value.
　本発明に係る入退管理システムは、利用者の入退域が管理される管理領域の境界に設けられたゲートの通路の中央を挟んで両側に配置され、各々が他方の側に検出信号を発信する一対の第１アンテナ装置と、一対の第１アンテナ装置から発信された検出信号の信号強度の両方が予め設定された第１閾値以上の信号強度であると判定するときに応答信号を発信する無線タグと、一対の第１アンテナ装置の少なくとも一方が無線タグから応答信号を受信するときに、当該無線タグの通行を検出する通行検出装置と、を備える。 The entrance / exit management system according to the present invention is arranged on both sides of the center of the gate passage provided at the boundary of the management area where the entrance / exit area of the user is managed, and each of them sends a detection signal to the other side. A response signal is transmitted when it is determined that both the signal strength of the pair of first antenna devices to be transmitted and the signal strength of the detection signal transmitted from the pair of first antenna devices are the signal strength equal to or higher than the preset first threshold value. A traffic detection device for detecting the passage of the radio tag when at least one of the pair of first antenna devices receives a response signal from the radio tag is provided.
　本発明によれば、入退管理システムの無線タグは、一対の第１アンテナ装置から発信された検出信号の信号強度の両方が第１閾値以上の信号強度であると判定されるときに応答信号を発信する。このため、ゲートの幅に合わせた検出信号の送信強度の調整は、必要とされない。 According to the present invention, the wireless tag of the entry / exit management system is a response signal when it is determined that both signal strengths of the detection signals transmitted from the pair of first antenna devices are signal strengths equal to or higher than the first threshold value. To send. Therefore, it is not necessary to adjust the transmission intensity of the detection signal according to the width of the gate.
実施の形態１に係る入退管理システムの構成を示すブロック図である。It is a block diagram which shows the structure of the entrance / exit management system which concerns on Embodiment 1. FIG. 実施の形態１に係る入退管理システムが適用される管理領域の平面図である。It is a top view of the management area to which the entrance / exit management system which concerns on Embodiment 1 is applied. 実施の形態１に係る無線タグの動作の例を示す表である。It is a table which shows the example of the operation of the wireless tag which concerns on Embodiment 1. FIG. 実施の形態１に係る入退管理システムの主要部のハードウェア構成図である。It is a hardware block diagram of the main part of the entrance / exit management system which concerns on Embodiment 1. FIG. 実施の形態２に係る入退管理システムの構成を示すブロック図である。It is a block diagram which shows the structure of the entrance / exit management system which concerns on Embodiment 2. 実施の形態２に係る入退管理システムが適用される管理領域の平面図である。It is a top view of the management area to which the entrance / exit management system which concerns on Embodiment 2 is applied. 実施の形態２に係る無線タグの動作の例を示す表である。It is a table which shows the example of the operation of the wireless tag which concerns on Embodiment 2. 実施の形態２に係る無線タグの動作の例を示すフローチャートである。It is a flowchart which shows the example of the operation of the wireless tag which concerns on Embodiment 2.
　本発明を実施するための形態について添付の図面を参照しながら説明する。各図において、同一または相当する部分には同一の符号を付して、重複する説明は適宜に簡略化または省略する。 The embodiment for carrying out the present invention will be described with reference to the attached drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and duplicate description will be appropriately simplified or omitted.
　実施の形態１．
　図１は、実施の形態１に係る入退管理システムの構成を示すブロック図である。 Embodiment 1.
FIG. 1 is a block diagram showing a configuration of an entry / exit management system according to the first embodiment.
　入退管理システム１は、管理領域Ａ０を有する場所に設けられる。管理領域Ａ０は、利用者の入域および退域が管理される領域である。管理領域Ａ０は、例えば建築物の内部または外部の領域である。管理領域Ａ０は、例えば部屋の内部であってもよい。 The entry / exit management system 1 is provided in a place having a management area A0. The management area A0 is an area in which the entry and exit of the user are managed. The management area A0 is, for example, an area inside or outside the building. The management area A0 may be, for example, the inside of a room.
　入退管理システム１は、入退管理装置２と、無線タグ３と、を備える。入退管理装置２は、一対の第１アンテナ装置４と、副制御装置５と、照合装置６と、開閉装置７と、主制御装置８と、を備える。 The entry / exit management system 1 includes an entry / exit management device 2 and a wireless tag 3. The entry / exit management device 2 includes a pair of first antenna devices 4, a sub control device 5, a collation device 6, a switchgear 7, and a main control device 8.
　この例において、一対の第１アンテナ装置４の各々は、互いに同一の構成である。一対の第１アンテナ装置４の各々は、発信アンテナ９と、受信アンテナ１０と、を備える。発信アンテナ９は、検出信号を発信するアンテナである。検出信号は、管理領域Ａ０に入域または退域する利用者を検出する信号である。検出信号は、例えば長波などの電波による無線信号である。検出信号は、当該検出信号を発信する第１アンテナ装置４を識別する第１識別情報を含む。第１識別情報は、一対の第１アンテナ装置４の各々を識別しうるように、互いに異なる情報に設定される。受信アンテナ１０は、応答信号を受信するアンテナである。応答信号は、検出信号に応答する信号である。応答信号は、例えば極超短波などの電波による無線信号である。応答信号は、当該応答信号を発信する機器を識別する第２識別情報を含む。第１アンテナ装置４は、例えば読取装置である。 In this example, each of the pair of first antenna devices 4 has the same configuration as each other. Each of the pair of first antenna devices 4 includes a transmitting antenna 9 and a receiving antenna 10. The transmitting antenna 9 is an antenna that transmits a detection signal. The detection signal is a signal for detecting a user entering or leaving the management area A0. The detection signal is a radio signal generated by a radio wave such as a long wave. The detection signal includes first identification information that identifies the first antenna device 4 that transmits the detection signal. The first identification information is set to different information so that each of the pair of first antenna devices 4 can be identified. The receiving antenna 10 is an antenna that receives a response signal. The response signal is a signal that responds to the detection signal. The response signal is a radio signal generated by a radio wave such as an ultra-high frequency wave. The response signal includes second identification information that identifies the device that transmits the response signal. The first antenna device 4 is, for example, a reading device.
　副制御装置５は、一対の第１アンテナ装置４の各々の動作を制御する装置である。第１アンテナ装置４の動作は、例えば、検出信号の発信、応答信号の受信、ならびに電波などによって通信する信号の生成および変換などを含む。 The sub-control device 5 is a device that controls the operation of each of the pair of first antenna devices 4. The operation of the first antenna device 4 includes, for example, transmission of a detection signal, reception of a response signal, and generation and conversion of a signal to be communicated by radio waves or the like.
　照合装置６は、管理領域Ａ０への入退域が利用者に許可されているか否かの判定を行う装置である。照合装置６は、許可されている利用者が所持する機器の第２識別情報を記憶する。照合装置６は、例えば、記憶している第２識別情報と、第１アンテナ装置４が読み取った応答信号に含まれる第２識別情報と、を照合することによって管理領域Ａ０への入退域が許可されているかの判定を行う。 The collation device 6 is a device that determines whether or not the user is permitted to enter or leave the management area A0. The collation device 6 stores the second identification information of the device possessed by the authorized user. The collation device 6 collates, for example, the stored second identification information with the second identification information included in the response signal read by the first antenna device 4, so that the entry / exit area to / from the management area A0 can be determined. Determine if it is permitted.
　開閉装置７は、照合装置６の判定に基づいて、管理領域Ａ０への入退域が許可されている利用者が管理領域Ａ０の境界を通行しうるように開閉する装置である。開閉装置７は、例えばフラッパー、バー、またはドアなどの開閉する部分を有する。あるいは、開閉装置７は、例えば管理領域Ａ０の境界に設けられたドアの電気錠を有していてもよい。 The opening / closing device 7 is a device that opens / closes so that a user who is permitted to enter / exit the management area A0 can pass through the boundary of the management area A0 based on the determination of the collation device 6. The switchgear 7 has a portion that opens and closes, such as a flapper, bar, or door. Alternatively, the switchgear 7 may have, for example, an electric lock on the door provided at the boundary of the control area A0.
　主制御装置８は、入退管理装置２の動作を制御する装置である。主制御装置８は、第１アンテナ装置４が受信した応答信号に含まれる情報を取得しうるように、例えば副制御装置５を通じて第１アンテナ装置４に接続される。主制御装置８は、応答信号に含まれていた第２識別情報を出力しうるように、照合装置６に接続される。主制御装置８は、照合装置６による判定の結果を出力しうるように、開閉装置７に接続される。この例において、主制御装置８は、照合装置６による判定の結果に基づいて、利用者の通行を検出する。主制御装置８は、通行検出装置の例である。 The main control device 8 is a device that controls the operation of the entry / exit management device 2. The main control device 8 is connected to the first antenna device 4 through, for example, the sub control device 5 so that the information included in the response signal received by the first antenna device 4 can be acquired. The main control device 8 is connected to the collation device 6 so that the second identification information included in the response signal can be output. The main control device 8 is connected to the switchgear 7 so that the result of the determination by the collation device 6 can be output. In this example, the main control device 8 detects the passage of the user based on the result of the determination by the collation device 6. The main control device 8 is an example of a traffic detection device.
　無線タグ３は、可搬式の機器である。無線タグ３は、利用者に所持される。無線タグ３は、第２識別情報を記憶する。無線タグ３の第２識別情報は、当該無線タグ３を所持する利用者に関連付けられる。無線タグ３は、受信部１１と、強度判定部１２と、応答制御部１３と、発信部１４と、を備える。 The wireless tag 3 is a portable device. The wireless tag 3 is possessed by the user. The wireless tag 3 stores the second identification information. The second identification information of the wireless tag 3 is associated with the user who possesses the wireless tag 3. The wireless tag 3 includes a receiving unit 11, a strength determining unit 12, a response control unit 13, and a transmitting unit 14.
　受信部１１は、検出信号を受信する部分である。 The receiving unit 11 is a part that receives the detection signal.
　強度判定部１２は、受信部１１が受信した検出信号の信号強度を判定する部分である。信号強度は、例えばＲＳＳＩ値（ＲＳＳＩ：Ｒｅｃｅｉｖｅｄ　Ｓｉｇｎａｌ　Ｓｔｒｅｎｇｔｈ　Ｉｎｄｉｃａｔｏｒ）である。強度判定部１２は、予め設定される第１閾値を記憶する。強度判定部１２は、受信した検出信号の信号強度と第１閾値とを比較する。 The intensity determination unit 12 is a unit that determines the signal intensity of the detection signal received by the reception unit 11. The signal strength is, for example, an RSSI value (RSSI: Received Signal Strength Indicator). The strength determination unit 12 stores a preset first threshold value. The intensity determination unit 12 compares the signal intensity of the received detection signal with the first threshold value.
　応答制御部１３は、受信部１１が受信する検出信号に対する無線タグ３の応答を制御する部分である。無線タグ３の応答は、例えば応答信号の発信である。 The response control unit 13 is a part that controls the response of the wireless tag 3 to the detection signal received by the reception unit 11. The response of the wireless tag 3 is, for example, the transmission of a response signal.
　発信部１４は、受信部１１が受信した検出信号に応答する応答信号を発信する部分である。 The transmitting unit 14 is a part that transmits a response signal in response to the detection signal received by the receiving unit 11.
　図２は、実施の形態１に係る入退管理システムが適用される管理領域の平面図である。 FIG. 2 is a plan view of a management area to which the entry / exit management system according to the first embodiment is applied.
　管理領域Ａ０の境界において、ゲート１５が設けられる。ゲート１５は、利用者が通行可能な通路１６を有する。ゲート１５は、例えば通路１６を挟んで設けられる一対の壁状の装置である。あるいは、ゲート１５は、例えばドア枠などであってもよい。利用者は、進入検知エリアＡ１を通過して管理領域Ａ０に入退域する。進入検知エリアＡ１は、通路１６の中央を含む領域である。 A gate 15 is provided at the boundary of the management area A0. The gate 15 has a passage 16 through which the user can pass. The gate 15 is, for example, a pair of wall-shaped devices provided across the passage 16. Alternatively, the gate 15 may be, for example, a door frame. The user enters and exits the management area A0 through the approach detection area A1. The approach detection area A1 is an area including the center of the passage 16.
　一対の第１アンテナ装置４の各々は、ゲート１５に設けられる。一対の第１アンテナ装置４の各々は、通路１６の中央の中心線Ｃを挟んで左右の両側に配置される。一対の第１アンテナ装置４は、互いに対向する。一対の第１アンテナ装置４の各々は、発信アンテナ９によって少なくとも他方の側に検出信号を発信する。すなわち、右側の第１アンテナ装置４は、少なくとも左側に検出信号を発信する。左側の第１アンテナ装置４は、少なくとも右側に検出信号を発信する。一対の第１アンテナ装置４の各々は、左右の両側に検出信号を発信してもよい。 Each of the pair of first antenna devices 4 is provided at the gate 15. Each of the pair of first antenna devices 4 is arranged on both the left and right sides of the center line C of the passage 16. The pair of first antenna devices 4 face each other. Each of the pair of first antenna devices 4 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the first antenna device 4 on the right side transmits a detection signal to at least the left side. The first antenna device 4 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
　この例において、検出信号は、発信源の第１アンテナ装置４を中心として球状に伝播する。検出信号の信号強度は、発信源から離れるにつれて減衰する。検出信号の信号強度は、発信源からの距離がＲ０以上となる範囲において、無線タグ３の受信部１１の検出限界を下回る。 In this example, the detection signal propagates spherically around the source first antenna device 4. The signal strength of the detection signal attenuates as it moves away from the source. The signal strength of the detection signal is below the detection limit of the receiving unit 11 of the wireless tag 3 in the range where the distance from the source is R0 or more.
　無線タグ３の第１閾値は、進入検知エリアＡ１における一対の第１アンテナ装置４からの検出信号の信号強度未満となるように予め設定される。例えば、距離Ｒ１が通路１６の幅に相当するときに、第１閾値は、第１アンテナ装置４からの距離がＲ１となる地点における検出信号の信号強度として予め設定される。この例において、進入検知エリアＡ１は、一対の第１アンテナ装置４からの距離が両方ともＲ１より短い領域である。 The first threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of first antenna devices 4 in the approach detection area A1. For example, when the distance R1 corresponds to the width of the passage 16, the first threshold value is preset as the signal strength of the detection signal at the point where the distance from the first antenna device 4 is R1. In this example, the approach detection area A1 is an area in which the distances from the pair of first antenna devices 4 are both shorter than R1.
　副制御装置５は、例えば一対の第１アンテナ装置４とともにゲート１５に設けられる。主制御装置８および照合装置６は、ゲート１５に設けられてもよい。あるいは、主制御装置８および照合装置６は、ゲート１５から離れた場所に配置されてもよい。副制御装置５、照合装置６、および主制御装置８の一部または全部は、同一のハードウェアに搭載されていてもよい。 The sub control device 5 is provided at the gate 15 together with, for example, a pair of first antenna devices 4. The main control device 8 and the collation device 6 may be provided at the gate 15. Alternatively, the main control device 8 and the collation device 6 may be arranged at a location away from the gate 15. A part or all of the sub control device 5, the collation device 6, and the main control device 8 may be mounted on the same hardware.
　続いて、図２および図３を用いて、入退管理システム１の動作の例を説明する。
　図２において、利用者が管理領域Ａ０に入域する場合の例が示される。図２において、利用者は図示されない。図２において、利用者が所持する無線タグ３の移動経路が示される。
　図３は、実施の形態１に係る無線タグの動作の例を示す表である。 Subsequently, an example of the operation of the entry / exit management system 1 will be described with reference to FIGS. 2 and 3.
FIG. 2 shows an example in which a user enters the management area A0. In FIG. 2, the user is not shown. In FIG. 2, the movement route of the wireless tag 3 possessed by the user is shown.
FIG. 3 is a table showing an example of the operation of the wireless tag according to the first embodiment.
　無線タグ３を所持する利用者は、ゲート１５に接近する。両方の第１アンテナ装置４から距離Ｒ０以上離れている地点において、無線タグ３の受信部１１は、一対の第１アンテナ装置４のいずれからも検出信号を受信しない。このとき、応答制御部１３は、発信部１４に応答信号を発信させない。 The user who possesses the wireless tag 3 approaches the gate 15. At a point separated from both first antenna devices 4 by a distance R0 or more, the receiving unit 11 of the wireless tag 3 does not receive a detection signal from any of the pair of first antenna devices 4. At this time, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、さらにゲート１５に接近する。利用者は、地点（１）を通行する。地点（１）と左側の第１アンテナ装置４との距離は、Ｒ０より短く、かつ、Ｒ１以上である。地点（１）と右側の第１アンテナ装置４との距離は、Ｒ０以上である。このとき、無線タグ３の受信部１１は、左側の第１アンテナ装置４から第１閾値未満の強度の検出信号を受信する。一方、受信部１１は、右側の第１アンテナ装置４からの検出信号を受信しない。一対の第１アンテナ装置４の一方から検出信号を受信しないときに、応答制御部１３は、発信部１４に応答信号を発信させない。 The user further approaches the gate 15. The user passes through the point (1). The distance between the point (1) and the first antenna device 4 on the left side is shorter than R0 and greater than or equal to R1. The distance between the point (1) and the first antenna device 4 on the right side is R0 or more. At this time, the receiving unit 11 of the wireless tag 3 receives a detection signal having an intensity less than the first threshold value from the first antenna device 4 on the left side. On the other hand, the receiving unit 11 does not receive the detection signal from the first antenna device 4 on the right side. When the detection signal is not received from one of the pair of first antenna devices 4, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、さらにゲート１５に接近する。利用者は、地点（２）を通行する。地点（２）と左側の第１アンテナ装置４との距離は、Ｒ０より短く、かつ、Ｒ１以上である。地点（２）と右側の第１アンテナ装置４との距離は、Ｒ０より短く、かつ、Ｒ１以上である。このとき、無線タグ３の受信部１１は、左側の第１アンテナ装置４から検出信号を受信する。受信部１１は、右側の第１アンテナ装置４からも検出信号を受信する。両方の第１アンテナ装置４から検出信号を受信するときに、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、左側の第１アンテナ装置４からの検出信号の信号強度が第１閾値未満であると判定する。強度判定部１２は、右側の第１アンテナ装置４からの検出信号の信号強度も第１閾値未満であると判定する。一対の第１アンテナ装置４から受信した検出信号の信号強度が両方とも第１閾値を下回るときに、応答制御部１３は、発信部１４に応答信号を発信させない。 The user further approaches the gate 15. The user passes through the point (2). The distance between the point (2) and the first antenna device 4 on the left side is shorter than R0 and greater than or equal to R1. The distance between the point (2) and the first antenna device 4 on the right side is shorter than R0 and greater than or equal to R1. At this time, the receiving unit 11 of the wireless tag 3 receives the detection signal from the first antenna device 4 on the left side. The receiving unit 11 also receives the detection signal from the first antenna device 4 on the right side. When the detection signal is received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is less than the first threshold value. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is also less than the first threshold value. When the signal intensities of the detection signals received from the pair of first antenna devices 4 are both lower than the first threshold value, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、ゲート１５の通路１６に進入する。利用者は、地点（３）を通行する。地点（３）と左側の第１アンテナ装置４との距離は、Ｒ１より短い。地点（３）と右側の第１アンテナ装置４との距離は、Ｒ０より短く、かつ、Ｒ１以上である。このとき、無線タグ３の受信部１１は、両方の第１アンテナ装置４から検出信号を受信する。両方の第１アンテナ装置４から検出信号を受信するときに、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、左側の第１アンテナ装置４からの検出信号の信号強度が第１閾値以上であると判定する。強度判定部１２は、右側の第１アンテナ装置４からの検出信号の信号強度が第１閾値未満であると判定する。一対の第１アンテナ装置４から受信した検出信号の少なくとも一方の信号強度が第１閾値を下回るときに、応答制御部１３は、発信部１４に応答信号を発信させない。 The user enters the passage 16 of the gate 15. The user passes through the point (3). The distance between the point (3) and the first antenna device 4 on the left side is shorter than R1. The distance between the point (3) and the first antenna device 4 on the right side is shorter than R0 and greater than or equal to R1. At this time, the receiving unit 11 of the wireless tag 3 receives the detection signal from both first antenna devices 4. When the detection signal is received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is equal to or greater than the first threshold value. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is less than the first threshold value. When the signal strength of at least one of the detection signals received from the pair of first antenna devices 4 is lower than the first threshold value, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、進入検知エリアＡ１に進入する。利用者は、地点（４）を通行する。ここで、地点（４）は、進入検知エリアＡ１の内部の地点である。すなわち、地点（４）と左側の第１アンテナ装置４との距離は、Ｒ１より短い。また、地点（４）と右側の第１アンテナ装置４との距離は、Ｒ１より短い。このとき、無線タグ３の受信部１１は、両方の第１アンテナ装置４から検出信号を受信する。両方の第１アンテナ装置４の両方から検出信号を受信するときに、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、左側の第１アンテナ装置４からの検出信号の信号強度が第１閾値以上であると判定する。強度判定部１２は、右側の第１アンテナ装置４からの検出信号の信号強度も第１閾値以上であると判定する。一対の第１アンテナ装置４から受信した検出信号の信号強度の両方が第１閾値以上であるときに、応答制御部１３は、発信部１４に応答信号を発信させる。 The user enters the intrusion detection area A1. The user passes through the point (4). Here, the point (4) is a point inside the approach detection area A1. That is, the distance between the point (4) and the first antenna device 4 on the left side is shorter than R1. Further, the distance between the point (4) and the first antenna device 4 on the right side is shorter than that of R1. At this time, the receiving unit 11 of the wireless tag 3 receives the detection signal from both first antenna devices 4. When the detection signal is received from both of the first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the left side is equal to or greater than the first threshold value. The intensity determination unit 12 determines that the signal intensity of the detection signal from the first antenna device 4 on the right side is also equal to or higher than the first threshold value. When both of the signal intensities of the detection signals received from the pair of first antenna devices 4 are equal to or higher than the first threshold value, the response control unit 13 causes the transmission unit 14 to transmit the response signal.
　発信部１４は、第２識別情報を含む応答信号を発信する。一対の第１アンテナ装置４の少なくとも一方は、受信アンテナ１０によって応答信号を受信する。主制御装置８は、副制御装置５を通じて第１アンテナ装置４から第２識別情報を取得する。主制御装置８は、取得した第２識別情報を照合装置６に出力する。照合装置６は、記憶している第２識別情報と、主制御装置８から出力される第２識別情報と、を照合する。照合装置６は、照合した第２識別情報が一致する場合に、無線タグ３を所持している利用者に管理領域Ａ０への入退域が許可されていると判定する。主制御装置８は、照合装置６の判定結果を取得する。主制御装置８は、照合装置６の判定結果を開閉装置７に出力する。開閉装置７は、照合装置６の判定結果に基づいて、入退域が許可されている利用者が通路１６を通行しうるように、ゲート１５を開く。利用者は、ゲート１５を通過して管理領域Ａ０に入域する。主制御装置８は、利用者の通行を検出する。 The transmission unit 14 transmits a response signal including the second identification information. At least one of the pair of first antenna devices 4 receives the response signal by the receiving antenna 10. The main control device 8 acquires the second identification information from the first antenna device 4 through the sub control device 5. The main control device 8 outputs the acquired second identification information to the collation device 6. The collation device 6 collates the stored second identification information with the second identification information output from the main control device 8. When the collated second identification information matches, the collation device 6 determines that the user possessing the wireless tag 3 is permitted to enter and leave the management area A0. The main control device 8 acquires the determination result of the collation device 6. The main control device 8 outputs the determination result of the collation device 6 to the switchgear 7. Based on the determination result of the collation device 6, the switchgear 7 opens the gate 15 so that a user who is permitted to enter and leave the area can pass through the passage 16. The user passes through the gate 15 and enters the management area A0. The main control device 8 detects the passage of the user.
　なお、利用者が管理領域Ａ０から退域する場合においても、入退管理システム１は、利用者が管理領域Ａ０に入域する場合と同様に動作する。 Even when the user leaves the management area A0, the entry / exit management system 1 operates in the same manner as when the user enters the management area A0.
　以上に説明したように、実施の形態１に係る入退管理システム１は、一対の第１アンテナ装置４と、無線タグ３と、通行検出装置と、を備える。一対の第１アンテナ装置４は、ゲート１５の通路１６の中央を挟んで両側に配置される。ゲート１５は、管理領域Ａ０の境界に設けられる。管理領域Ａ０は、利用者の入退域が管理される領域である。一対の第１アンテナ装置４の各々は、他方の側に検出信号を発信する。無線タグ３は、一対の第１アンテナ装置４から発信された検出信号の信号強度の両方が第１閾値以上の信号強度であると判定するときに、応答信号を発信する。第１閾値は、予め設定された値である。通行検出装置は、一対の第１アンテナ装置４の少なくとも一方が無線タグ３から応答信号を受信するときに、当該無線タグ３を所持する利用者の通行を検出する。
　また、実施の形態１に係る無線タグ３は、受信部１１と、強度判定部１２と、発信部１４と、を備える。受信部１１は、一対の第１アンテナ装置４の各々が他方の側に発信する検出信号を受信する。強度判定部１２は、受信部１１が受信する検出信号の信号強度を判定する。発信部１４は、一対の第１アンテナ装置４から発信された検出信号の信号強度の両方が第１閾値以上の信号強度であると強度判定部１２が判定するときに、応答信号を発信する。 As described above, the entry / exit management system 1 according to the first embodiment includes a pair of first antenna devices 4, a wireless tag 3, and a traffic detection device. The pair of first antenna devices 4 are arranged on both sides of the center of the passage 16 of the gate 15. The gate 15 is provided at the boundary of the management area A0. The management area A0 is an area in which the user's entry / exit area is managed. Each of the pair of first antenna devices 4 transmits a detection signal to the other side. The wireless tag 3 transmits a response signal when it is determined that both signal intensities of the detection signals transmitted from the pair of first antenna devices 4 are signal intensities equal to or higher than the first threshold value. The first threshold value is a preset value. When at least one of the pair of first antenna devices 4 receives the response signal from the radio tag 3, the traffic detection device detects the traffic of the user who possesses the radio tag 3.
Further, the wireless tag 3 according to the first embodiment includes a receiving unit 11, a strength determining unit 12, and a transmitting unit 14. The receiving unit 11 receives a detection signal transmitted by each of the pair of first antenna devices 4 to the other side. The intensity determination unit 12 determines the signal intensity of the detection signal received by the reception unit 11. The transmitting unit 14 transmits a response signal when the strength determining unit 12 determines that both signal strengths of the detection signals transmitted from the pair of first antenna devices 4 are signal strengths equal to or higher than the first threshold value.
　これにより、一対の第１アンテナ装置４の各々がゲート１５の全体を含む広い範囲に検出信号を発信していても、無線タグ３は、ゲート１５から離れた位置において応答信号を発信しない。このため、ゲート１５の幅に合わせた検出信号の送信強度の調整を必要とせずに、進入検知エリアＡ１は、ゲート１５の内側に形成される。また、進入検知エリアＡ１の境界において、検出信号の信号強度は、受信部１１の検出限界より大きい。このため、進入検知エリアＡ１への進入の判定がノイズなどの影響を受けにくい。また、無線タグ３は、進入検知エリアＡ１から離れているときに不要な応答信号を発信しない。このため、無線タグ３において、消費電力が抑えられる。 As a result, even if each of the pair of first antenna devices 4 transmits a detection signal over a wide range including the entire gate 15, the wireless tag 3 does not transmit a response signal at a position away from the gate 15. Therefore, the approach detection area A1 is formed inside the gate 15 without the need to adjust the transmission intensity of the detection signal according to the width of the gate 15. Further, at the boundary of the approach detection area A1, the signal strength of the detection signal is larger than the detection limit of the receiving unit 11. Therefore, the determination of approach to the approach detection area A1 is not easily affected by noise or the like. Further, the wireless tag 3 does not transmit an unnecessary response signal when it is away from the intrusion detection area A1. Therefore, the power consumption of the wireless tag 3 can be suppressed.
　なお、検出信号は、長波以外の周波数帯の電波であってもよい。また、応答信号は、極超短波以外の周波数帯の電波であってもよい。 The detection signal may be a radio wave in a frequency band other than the long wave. Further, the response signal may be a radio wave in a frequency band other than ultra high frequency.
　また、一対の第１アンテナ装置４の各々は、検出信号の干渉を避けるように、交互に検出信号を発信してもよい。このとき、無線タグ３は、例えば交互に検出信号が発信される一周期の間に一対の第１アンテナ装置４の両方から受信した検出信号の信号強度が両方とも第１閾値以上である場合に、応答信号を発信する。また、一対の第１アンテナ装置４の各々は、検出信号の干渉を避けるように、互いに異なる周波数の検出信号を発信してもよい。 Further, each of the pair of first antenna devices 4 may alternately transmit the detection signals so as to avoid interference of the detection signals. At this time, the wireless tag 3 is used, for example, when the signal strengths of the detection signals received from both of the pair of first antenna devices 4 during one cycle in which the detection signals are alternately transmitted are both equal to or higher than the first threshold value. , Sends a response signal. Further, each of the pair of first antenna devices 4 may transmit detection signals having different frequencies from each other so as to avoid interference of the detection signals.
　続いて、図４を用いて、入退管理システム１のハードウェア構成の例について説明する。
　図４は、実施の形態１に係る入退管理システムの主要部のハードウェア構成図である。 Subsequently, an example of the hardware configuration of the entry / exit management system 1 will be described with reference to FIG.
FIG. 4 is a hardware configuration diagram of a main part of the entry / exit management system according to the first embodiment.
　入退管理システム１の各機能は、処理回路により実現し得る。処理回路は、少なくとも１つのプロセッサ１ｂと少なくとも１つのメモリ１ｃとを備える。処理回路は、プロセッサ１ｂおよびメモリ１ｃと共に、あるいはそれらの代用として、少なくとも１つの専用のハードウェア１ａを備えてもよい。 Each function of the entry / exit management system 1 can be realized by a processing circuit. The processing circuit includes at least one processor 1b and at least one memory 1c. The processing circuit may include at least one dedicated hardware 1a with or as a substitute for the processor 1b and the memory 1c.
　処理回路がプロセッサ１ｂとメモリ１ｃとを備える場合、入退管理システム１の各機能は、ソフトウェア、ファームウェア、またはソフトウェアとファームウェアとの組み合わせで実現される。ソフトウェアおよびファームウェアの少なくとも一方は、プログラムとして記述される。そのプログラムはメモリ１ｃに格納される。プロセッサ１ｂは、メモリ１ｃに記憶されたプログラムを読み出して実行することにより、入退管理システム１の各機能を実現する。 When the processing circuit includes the processor 1b and the memory 1c, each function of the entry / exit management system 1 is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. The program is stored in the memory 1c. The processor 1b realizes each function of the entry / exit management system 1 by reading and executing the program stored in the memory 1c.
　プロセッサ１ｂは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、ＤＳＰともいう。メモリ１ｃは、例えば、ＲＡＭ、ＲＯＭ、フラッシュメモリ、ＥＰＲＯＭ、ＥＥＰＲＯＭなどの、不揮発性または揮発性の半導体メモリなどにより構成される。 The processor 1b is also referred to as a CPU (Central Processing Unit), a processing device, an arithmetic unit, a microprocessor, a microcomputer, and a DSP. The memory 1c is composed of, for example, a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM.
　処理回路が専用のハードウェア１ａを備える場合、処理回路は、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ、ＦＰＧＡ、またはこれらの組み合わせで実現される。 When the processing circuit is provided with dedicated hardware 1a, the processing circuit is realized by, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.
　入退管理システム１の各機能は、それぞれ処理回路で実現することができる。あるいは、入退管理システム１の各機能は、まとめて処理回路で実現することもできる。入退管理システム１の各機能について、一部を専用のハードウェア１ａで実現し、他部をソフトウェアまたはファームウェアで実現してもよい。このように、処理回路は、ハードウェア１ａ、ソフトウェア、ファームウェア、またはこれらの組み合わせで入退管理システム１の各機能を実現する。 Each function of the entry / exit management system 1 can be realized by a processing circuit. Alternatively, each function of the entry / exit management system 1 can be collectively realized by a processing circuit. For each function of the entry / exit management system 1, a part may be realized by the dedicated hardware 1a, and the other part may be realized by software or firmware. In this way, the processing circuit realizes each function of the entry / exit management system 1 by hardware 1a, software, firmware, or a combination thereof.
　実施の形態２．
　実施の形態２において、実施の形態１で開示される例と相違する点について特に詳しく説明する。実施の形態２で説明しない特徴については、実施の形態１で開示される例のいずれの特徴が採用されてもよい。 Embodiment 2.
The differences between the second embodiment and the examples disclosed in the first embodiment will be described in particular detail. As for the features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.
　図５は、実施の形態２に係る入退管理システムの構成を示すブロック図である。 FIG. 5 is a block diagram showing the configuration of the entry / exit management system according to the second embodiment.
　入退管理装置２は、一対の第１アンテナ装置４と、一対の第２アンテナ装置１７と、２つの副制御装置５と、照合装置６と、開閉装置７と、主制御装置８と、を備える。 The entry / exit management device 2 includes a pair of first antenna devices 4, a pair of second antenna devices 17, two sub control devices 5, a collation device 6, a switchgear 7, and a main control device 8. Be prepared.
　この例において、一対の第２アンテナ装置１７の各々は、互いに同一の構成である。一対の第２アンテナ装置１７の各々は、発信アンテナ９と、受信アンテナ１０と、を備える。第２アンテナ装置１７は、例えば読取装置である。一対の第１アンテナ装置４および一対の第２アンテナ装置１７の４つのアンテナ装置の各々は、互いに同一の構成であってもよい。 In this example, each of the pair of second antenna devices 17 has the same configuration as each other. Each of the pair of second antenna devices 17 includes a transmitting antenna 9 and a receiving antenna 10. The second antenna device 17 is, for example, a reading device. Each of the four antenna devices of the pair of first antenna devices 4 and the pair of second antenna devices 17 may have the same configuration as each other.
　一方の副制御装置５は、一対の第１アンテナ装置４の各々の動作を制御する。他方の副制御装置５は、一対の第２アンテナ装置１７の各々の動作を制御する。第２アンテナ装置１７の動作は、第１アンテナ装置４と同様に、例えば、検出信号の発信、応答信号の受信、ならびに電波などによって通信する信号の生成および変換などを含む。 One sub-control device 5 controls the operation of each of the pair of first antenna devices 4. The other sub-control device 5 controls the operation of each of the pair of second antenna devices 17. Similar to the first antenna device 4, the operation of the second antenna device 17 includes, for example, transmission of a detection signal, reception of a response signal, and generation and conversion of a signal to be communicated by radio waves or the like.
　主制御装置８は、第１アンテナ装置４が受信した応答信号に含まれる情報を取得しうるように、例えば副制御装置５を通じて第１アンテナ装置４に接続される。また、主制御装置８は、第２アンテナ装置１７が受信した応答信号に含まれる情報を取得しうるように、例えば副制御装置５を通じて第２アンテナ装置１７に接続される。 The main control device 8 is connected to the first antenna device 4 through, for example, the sub control device 5 so that the information included in the response signal received by the first antenna device 4 can be acquired. Further, the main control device 8 is connected to the second antenna device 17 through, for example, the sub control device 5 so that the information included in the response signal received by the second antenna device 17 can be acquired.
　無線タグ３の強度判定部１２は、予め設定される第１閾値および第２閾値を記憶する。第２閾値は、第１閾値より低い強度の値である。強度判定部１２は、受信した検出信号の信号強度と第１閾値または第２閾値とを比較する。 The strength determination unit 12 of the wireless tag 3 stores preset first threshold values and second threshold values. The second threshold value is a value having an intensity lower than that of the first threshold value. The intensity determination unit 12 compares the signal intensity of the received detection signal with the first threshold value or the second threshold value.
　応答制御部１３は、無線タグ３の動作状態を管理する。無線タグ３の動作状態は、例えば、許可状態および禁止状態を含む。許可状態は、発信部１４による応答信号の発信が許可される状態である。禁止状態は、発信部１４による応答信号の発信が禁止される状態である。応答制御部１３は、無線タグ３の動作状態を切り替えることによって、応答信号の発信の禁止および禁止の解除を行う。 The response control unit 13 manages the operating state of the wireless tag 3. The operating state of the wireless tag 3 includes, for example, a permitted state and a prohibited state. The permission state is a state in which transmission of the response signal by the transmission unit 14 is permitted. The prohibition state is a state in which transmission of the response signal by the transmission unit 14 is prohibited. The response control unit 13 prohibits and cancels the transmission of the response signal by switching the operating state of the wireless tag 3.
　図６は、実施の形態２に係る入退管理システムが適用される管理領域の平面図である。 FIG. 6 is a plan view of a management area to which the entry / exit management system according to the second embodiment is applied.
　ゲート１５の通路１６は、ゲート１５の入口からゲート１５の出口にわたる。ゲート１５の入口は、利用者が通路１６に進入する部分である。ゲート１５の出口は、利用者が通路１６から出る部分である。利用者が管理領域Ａ０に入域する場合に、ゲート１５の入口は、例えば管理領域Ａ０の外側の部分である。このとき、ゲート１５の出口は、例えば管理領域Ａ０の内側の部分である。一方、利用者が管理領域Ａ０から退域する場合に、ゲート１５の入口は、例えば管理領域Ａ０の内側の部分である。このとき、ゲート１５の出口は、例えば管理領域Ａ０の外側の部分である。 The passage 16 of the gate 15 extends from the entrance of the gate 15 to the exit of the gate 15. The entrance of the gate 15 is a portion where the user enters the passage 16. The exit of the gate 15 is a portion where the user exits the passage 16. When the user enters the management area A0, the entrance of the gate 15 is, for example, an outer portion of the management area A0. At this time, the exit of the gate 15 is, for example, an inner portion of the management area A0. On the other hand, when the user leaves the management area A0, the entrance of the gate 15 is, for example, an inner portion of the management area A0. At this time, the exit of the gate 15 is, for example, an outer portion of the management area A0.
　管理領域Ａ０の境界において、利用者は、進入検知エリアＡ１を通過して管理領域Ａ０に入退域する。ここで、利用者は、進入検知エリアＡ１から出た後に、離脱検知エリアＡ２から出る。離脱検知エリアＡ２は、進入検知エリアＡ１を含む領域である。この例において、離脱検知エリアＡ２は、ゲート１５の通路１６の全体を覆う領域である。 At the boundary of the management area A0, the user passes through the intrusion detection area A1 and enters and exits the management area A0. Here, the user exits the exit detection area A1 and then exits the exit detection area A2. The departure detection area A2 is an area including the approach detection area A1. In this example, the departure detection area A2 is an area that covers the entire passage 16 of the gate 15.
　一対の第１アンテナ装置４の各々は、ゲート１５の入口側に設けられている。一対の第１アンテナ装置４の各々は、通路１６の中央の中心線Ｃを挟んで左右の両側に配置される。一対の第１アンテナ装置４は、互いに対向する。一対の第１アンテナ装置４の各々は、発信アンテナ９によって少なくとも他方の側に検出信号を発信する。すなわち、右側の第１アンテナ装置４は、少なくとも左側に検出信号を発信する。左側の第１アンテナ装置４は、少なくとも右側に検出信号を発信する。一対の第１アンテナ装置４の各々は、左右の両側に検出信号を発信してもよい。 Each of the pair of first antenna devices 4 is provided on the inlet side of the gate 15. Each of the pair of first antenna devices 4 is arranged on both the left and right sides of the center line C of the passage 16. The pair of first antenna devices 4 face each other. Each of the pair of first antenna devices 4 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the first antenna device 4 on the right side transmits a detection signal to at least the left side. The first antenna device 4 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
　一対の第２アンテナ装置１７の各々は、ゲート１５の出口側に設けられている。一対の第２アンテナ装置１７の各々は、通路１６の中央の中心線Ｃを挟んで左右の両側に配置される。一対の第２アンテナ装置１７は、互いに対向する。一対の第２アンテナ装置１７の各々は、発信アンテナ９によって少なくとも他方の側に検出信号を発信する。すなわち、右側の第２アンテナ装置１７は、少なくとも左側に検出信号を発信する。左側の第２アンテナ装置１７は、少なくとも右側に検出信号を発信する。一対の第１アンテナ装置４の各々は、左右の両側に検出信号を発信してもよい。 Each of the pair of second antenna devices 17 is provided on the exit side of the gate 15. Each of the pair of second antenna devices 17 is arranged on the left and right sides of the center line C of the passage 16. The pair of second antenna devices 17 face each other. Each of the pair of second antenna devices 17 transmits a detection signal to at least the other side by the transmitting antenna 9. That is, the second antenna device 17 on the right side transmits a detection signal to at least the left side. The second antenna device 17 on the left side transmits a detection signal to at least the right side. Each of the pair of first antenna devices 4 may transmit detection signals on both the left and right sides.
　この例において、検出信号は、発信源の第１アンテナ装置４または第２アンテナ装置１７を中心として球状に伝播する。検出信号の信号強度は、発信源から離れるにつれて減衰する。検出信号の信号強度は、発信源からの距離がＲ０以上となる範囲において、無線タグ３の受信部１１の検出限界を下回る。 In this example, the detection signal propagates spherically around the source first antenna device 4 or the second antenna device 17. The signal strength of the detection signal attenuates as it moves away from the source. The signal strength of the detection signal is below the detection limit of the receiving unit 11 of the wireless tag 3 in the range where the distance from the source is R0 or more.
　無線タグ３の第１閾値は、進入検知エリアＡ１における一対の第１アンテナ装置４からの検出信号の信号強度未満となるように予め設定される。例えば、距離Ｒ１が通路１６の幅に相当するときに、第１閾値は、第１アンテナ装置４からの距離がＲ１となる地点における検出信号の信号強度に予め設定される。この例において、進入検知エリアＡ１は、一対の第１アンテナ装置４からの距離がいずれもＲ１より短い領域である。 The first threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of first antenna devices 4 in the approach detection area A1. For example, when the distance R1 corresponds to the width of the passage 16, the first threshold value is preset to the signal strength of the detection signal at the point where the distance from the first antenna device 4 is R1. In this example, the approach detection area A1 is an area in which the distance from the pair of first antenna devices 4 is shorter than that of R1.
　無線タグ３の第２閾値は、離脱検知エリアＡ２における一対の第２アンテナ装置１７からの検出信号の信号強度未満となるように予め設定される。第２閾値は、第２アンテナ装置１７からの距離がＲ２となる地点における検出信号の信号強度に予め設定される。この例において、進入検知エリアＡ１は、一対の第２アンテナ装置１７からの距離がいずれもＲ２より短い領域である。ここで、距離Ｒ２は、距離Ｒ１より長い。 The second threshold value of the wireless tag 3 is set in advance so as to be less than the signal strength of the detection signals from the pair of second antenna devices 17 in the detachment detection area A2. The second threshold value is preset to the signal strength of the detection signal at the point where the distance from the second antenna device 17 is R2. In this example, the approach detection area A1 is an area in which the distance from the pair of second antenna devices 17 is shorter than that of R2. Here, the distance R2 is longer than the distance R1.
　続いて、図６および図７を用いて、入退管理システム１の動作の例を説明する。
　図６において、利用者が管理領域Ａ０に入域する場合の例が示される。このとき、一対の第１アンテナ装置４は、管理領域Ａ０の外側に近い一対のアンテナ装置である。また、一対の第２アンテナ装置１７は、管理領域Ａ０の内側に近い一対のアンテナ装置である。図６において、利用者は図示されない。図６において、利用者が所持する無線タグ３の移動経路が示される。
　図７は、実施の形態２に係る無線タグの動作の例を示す表である。 Subsequently, an example of the operation of the entry / exit management system 1 will be described with reference to FIGS. 6 and 7.
FIG. 6 shows an example in which the user enters the management area A0. At this time, the pair of first antenna devices 4 is a pair of antenna devices near the outside of the management area A0. Further, the pair of second antenna devices 17 is a pair of antenna devices close to the inside of the management area A0. In FIG. 6, the user is not shown. In FIG. 6, the movement route of the wireless tag 3 possessed by the user is shown.
FIG. 7 is a table showing an example of the operation of the wireless tag according to the second embodiment.
　無線タグ３を所持する利用者は、ゲート１５に接近する。利用者がゲート１５に進入する前において、無線タグ３の動作状態は許可状態にある。両方の第１アンテナ装置４から距離がＲ０以上離れている地点において、無線タグ３の受信部１１は、一対の第１アンテナ装置４のいずれからも検出信号を受信しない。このとき、応答制御部１３は、発信部１４に応答信号を発信させない。 The user who possesses the wireless tag 3 approaches the gate 15. Before the user enters the gate 15, the operating state of the wireless tag 3 is in the permitted state. At a point where the distance from both first antenna devices 4 is R0 or more, the receiving unit 11 of the wireless tag 3 does not receive the detection signal from any of the pair of first antenna devices 4. At this time, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、さらにゲート１５に接近する。利用者は、地点（１）を通行する。地点（１）と一対の第１アンテナ装置４との距離は、両方ともＲ０より短く、かつ、Ｒ２以上である。地点（１）と一対の第２アンテナ装置１７との距離は、両方ともＲ０以上である。このとき、受信部１１は、両方の第１アンテナ装置４から検出信号を受信する。一方、受信部１１は、一対の第２アンテナ装置１７のいずれからも検出信号を受信しない。無線タグ３の状態が許可状態である場合に、両方の第１アンテナ装置４から検出信号を受信するときに、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第１アンテナ装置４からの検出信号の信号強度が両方とも第２閾値未満であると判定する。したがって、一対の第１アンテナ装置４からの検出信号の信号強度は、両方とも第１閾値未満である。一対の第１アンテナ装置４から受信した検出信号の少なくとも一方の信号強度が第１閾値を下回るときに、応答制御部１３は、発信部１４に応答信号を発信させない。 The user further approaches the gate 15. The user passes through the point (1). The distance between the point (1) and the pair of first antenna devices 4 is shorter than R0 and greater than or equal to R2. The distance between the point (1) and the pair of second antenna devices 17 is R0 or more. At this time, the receiving unit 11 receives the detection signal from both first antenna devices 4. On the other hand, the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17. When the detection signal is received from both first antenna devices 4 when the state of the wireless tag 3 is the permitted state, the strength determination unit 12 determines the signal strength of the received detection signal. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the second threshold value. Therefore, the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the first threshold value. When the signal strength of at least one of the detection signals received from the pair of first antenna devices 4 is lower than the first threshold value, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、さらにゲート１５に接近する。利用者は、地点（２）を通行する。地点（２）と一対の第１アンテナ装置４との距離は、両方ともＲ２より短く、かつ、Ｒ１以上である。地点（２）と一対の第２アンテナ装置１７との距離は、両方ともＲ０以上である。このとき、受信部１１は、一対の第１アンテナ装置４の両方から検出信号を受信する。一方、受信部１１は、一対の第２アンテナ装置１７のいずれからも検出信号を受信しない。両方の第１アンテナ装置４から検出信号を受信したので、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第１アンテナ装置４からの検出信号の信号強度が両方とも第１閾値未満であると判定する。このとき、応答制御部１３は、発信部１４に応答信号を発信させない。 The user further approaches the gate 15. The user passes through the point (2). The distance between the point (2) and the pair of first antenna devices 4 is shorter than R2 and greater than or equal to R1. The distance between the point (2) and the pair of second antenna devices 17 is R0 or more. At this time, the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4. On the other hand, the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17. Since the detection signals have been received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signals. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both less than the first threshold value. At this time, the response control unit 13 does not cause the transmission unit 14 to transmit the response signal.
　利用者は、進入検知エリアＡ１に進入する。利用者は、地点（３）を通行する。地点（３）は、進入検知エリアＡ１の内部の地点である。地点（３）と一対の第１アンテナ装置４との距離は、両方ともＲ１より短い。地点（３）と一対の第２アンテナ装置１７との距離は、両方ともＲ０以上である。このとき、受信部１１は、一対の第１アンテナ装置４の両方から検出信号を受信する。一方、受信部１１は、一対の第２アンテナ装置１７のいずれからも検出信号を受信しない。両方の第１アンテナ装置４から検出信号を受信したので、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第１アンテナ装置４からの検出信号の信号強度が両方とも第１閾値以上であると判定する。一対の第１アンテナ装置４から受信した検出信号の信号強度が両方とも第１閾値以上であるときに、応答制御部１３は、発信部１４に応答信号を発信させる。このとき、応答制御部１３は、無線タグ３の状態を許可状態から禁止状態に切り替える。 The user enters the intrusion detection area A1. The user passes through the point (3). The point (3) is a point inside the approach detection area A1. The distance between the point (3) and the pair of first antenna devices 4 is shorter than that of R1. The distance between the point (3) and the pair of second antenna devices 17 is R0 or more. At this time, the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4. On the other hand, the receiving unit 11 does not receive the detection signal from any of the pair of second antenna devices 17. Since the detection signals have been received from both first antenna devices 4, the intensity determination unit 12 determines the signal intensity of the received detection signals. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 are both equal to or higher than the first threshold value. When the signal intensities of the detection signals received from the pair of first antenna devices 4 are both equal to or higher than the first threshold value, the response control unit 13 causes the transmission unit 14 to transmit the response signal. At this time, the response control unit 13 switches the state of the wireless tag 3 from the permitted state to the prohibited state.
　発信部１４は、第２識別情報を含む応答信号を発信する。一対の第１アンテナ装置４の少なくとも一方は、受信アンテナ１０によって応答信号を受信する。主制御装置８は、副制御装置５を通じて第１アンテナ装置４から第２識別情報を取得する。主制御装置８は、取得した第２識別情報を照合装置６に出力する。照合装置６は、記憶している第２識別情報と、主制御装置８から出力される第２識別情報と、を照合する。照合装置６は、照合した第２識別情報が一致する場合に、無線タグ３を所持している利用者に管理領域Ａ０への入退域が許可されていると判定する。主制御装置８は、照合装置６の判定結果を取得する。主制御装置８は、照合装置６の判定結果を開閉装置７に出力する。開閉装置７は、照合装置６の判定結果に基づいて、入退域が許可されている利用者が通路１６を通行しうるように、ゲート１５を開く。主制御装置８は、利用者の通行を検出する。 The transmission unit 14 transmits a response signal including the second identification information. At least one of the pair of first antenna devices 4 receives the response signal by the receiving antenna 10. The main control device 8 acquires the second identification information from the first antenna device 4 through the sub control device 5. The main control device 8 outputs the acquired second identification information to the collation device 6. The collation device 6 collates the stored second identification information with the second identification information output from the main control device 8. When the collated second identification information matches, the collation device 6 determines that the user possessing the wireless tag 3 is permitted to enter and leave the management area A0. The main control device 8 acquires the determination result of the collation device 6. The main control device 8 outputs the determination result of the collation device 6 to the switchgear 7. Based on the determination result of the collation device 6, the switchgear 7 opens the gate 15 so that a user who is permitted to enter and leave the area can pass through the passage 16. The main control device 8 detects the passage of the user.
　利用者は、ゲート１５の通路１６を通行する。利用者は、地点（４）を通行する。地点（４）と一対の第１アンテナ装置４との距離は、両方ともＲ２より短く、かつ、Ｒ１以上である。地点（４）と一対の第２アンテナ装置１７との距離は、両方ともＲ２より短く、かつ、Ｒ１以上である。このとき、受信部１１は、一対の第１アンテナ装置４の両方から検出信号を受信する。また、受信部１１は、一対の第２アンテナ装置１７の両方からも検出信号を受信する。無線タグ３の状態が禁止状態である場合に、一対の第１アンテナ装置４および一対の第２アンテナ装置１７の４つのアンテナ装置のうち少なくともいずれかから検出信号を受信するときに、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第１アンテナ装置４および一対の第２アンテナ装置１７からの検出信号の信号強度がいずれも第２閾値以上であると判定する。受信した検出信号のうち少なくともいずれかの信号強度が第２閾値以上であるときに、応答制御部１３は、無線タグ３の状態を禁止状態のまま維持する。 The user passes through the passage 16 of the gate 15. The user passes through the point (4). The distance between the point (4) and the pair of first antenna devices 4 is shorter than R2 and greater than or equal to R1. The distance between the point (4) and the pair of second antenna devices 17 is both shorter than R2 and greater than or equal to R1. At this time, the receiving unit 11 receives the detection signal from both of the pair of first antenna devices 4. The receiving unit 11 also receives the detection signal from both of the pair of second antenna devices 17. When the state of the wireless tag 3 is the prohibited state and the detection signal is received from at least one of the four antenna devices of the pair of first antenna devices 4 and the pair of second antenna devices 17, the strength determination unit 12 determines the signal strength of the received detection signal. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of first antenna devices 4 and the pair of second antenna devices 17 are both equal to or higher than the second threshold value. When at least one of the received detection signals has a signal strength of the second threshold value or more, the response control unit 13 keeps the state of the wireless tag 3 in the prohibited state.
　利用者は、ゲート１５の通路１６をさらに通行する。利用者は、地点（５）を通行する。地点（５）と一対の第１アンテナ装置４との距離は、両方ともＲ０以上である。地点（５）と一対の第２アンテナ装置１７との距離は、両方ともＲ１より短い。このとき、受信部１１は、一対の第１アンテナ装置４のいずれからも検出信号を受信しない。一方、受信部１１は、一対の第２アンテナ装置１７の両方から検出信号を受信する。このとき、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第２アンテナ装置１７からの検出信号の信号強度が両方とも第１閾値以上であると判定する。したがって、一対の第２アンテナ装置１７からの検出信号の信号強度は、両方とも第２閾値以上である。このとき、応答制御部１３は、無線タグ３の状態を禁止状態のまま維持する。ここで、無線タグ３の状態が禁止状態であるので、一対の第２アンテナ装置１７からの検出信号の信号強度が両方とも第１閾値以上であっても、応答制御部１３は、発信部１４に応答信号を発信させない。 The user further passes through the passage 16 of the gate 15. The user passes through the point (5). The distance between the point (5) and the pair of first antenna devices 4 is R0 or more. The distance between the point (5) and the pair of second antenna devices 17 is both shorter than R1. At this time, the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4. On the other hand, the receiving unit 11 receives the detection signal from both of the pair of second antenna devices 17. At this time, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the first threshold value. Therefore, the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the second threshold value. At this time, the response control unit 13 maintains the state of the wireless tag 3 in the prohibited state. Here, since the state of the wireless tag 3 is the prohibited state, even if the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the first threshold value, the response control unit 13 is the transmission unit 14. Does not send a response signal to.
　利用者は、ゲート１５の通路１６を通過する。利用者は、地点（６）を通行する。地点（６）と一対の第１アンテナ装置４との距離は、両方ともＲ０以上である。地点（６）と一対の第２アンテナ装置１７との距離は、両方ともＲ２より短く、かつ、Ｒ１以上である。このとき、受信部１１は、一対の第１アンテナ装置４のいずれからも検出信号を受信しない。一方、受信部１１は、両方の第２アンテナ装置１７から検出信号を受信する。このとき、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第２アンテナ装置１７からの検出信号の信号強度が両方とも第２閾値以上であると判定する。このとき、応答制御部１３は、無線タグ３の状態を禁止状態のまま維持する。 The user passes through the passage 16 of the gate 15. The user passes through the point (6). The distance between the point (6) and the pair of first antenna devices 4 is R0 or more. The distance between the point (6) and the pair of second antenna devices 17 is both shorter than R2 and greater than or equal to R1. At this time, the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4. On the other hand, the receiving unit 11 receives the detection signal from both second antenna devices 17. At this time, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both equal to or higher than the second threshold value. At this time, the response control unit 13 maintains the state of the wireless tag 3 in the prohibited state.
　利用者は、管理領域Ａ０の内側においてゲート１５から離れる。利用者は、地点（７）を通行する。地点（７）と一対の第１アンテナ装置４との距離は、両方ともＲ０以上である。地点（７）と一対の第２アンテナ装置１７との距離は、両方ともＲ０より短く、かつ、Ｒ２以上である。このとき、受信部１１は、一対の第１アンテナ装置４のいずれからも検出信号を受信しない。一方、受信部１１は、両方の第２アンテナ装置１７から検出信号を受信する。このとき、強度判定部１２は、受信した検出信号の信号強度を判定する。強度判定部１２は、一対の第２アンテナ装置１７からの検出信号の信号強度が両方とも第２閾値未満であると判定する。受信した検出信号の信号強度がいずれも第２閾値を下回るときに、応答制御部１３は、無線タグ３の状態を許可状態に切り替える。このとき、無線タグ３は、進入検知エリアＡ１の外側にあるので、発信部１４は、応答信号を発信しない。 The user leaves the gate 15 inside the management area A0. The user passes through the point (7). The distance between the point (7) and the pair of first antenna devices 4 is R0 or more. The distance between the point (7) and the pair of second antenna devices 17 is both shorter than R0 and greater than or equal to R2. At this time, the receiving unit 11 does not receive the detection signal from any of the pair of first antenna devices 4. On the other hand, the receiving unit 11 receives the detection signal from both second antenna devices 17. At this time, the intensity determination unit 12 determines the signal intensity of the received detection signal. The intensity determination unit 12 determines that the signal intensities of the detection signals from the pair of second antenna devices 17 are both less than the second threshold value. When the signal strengths of the received detection signals are all below the second threshold value, the response control unit 13 switches the state of the wireless tag 3 to the permitted state. At this time, since the wireless tag 3 is outside the intrusion detection area A1, the transmitting unit 14 does not transmit a response signal.
　利用者は、管理領域Ａ０の内側においてさらにゲート１５から離れる。利用者は、地点（８）を通行する。地点（８）と一対の第１アンテナ装置４との距離は、両方ともＲ０以上である。地点（７）と一対の第２アンテナ装置１７との距離は、両方ともＲ０以上である。このとき、受信部１１は、一対の第１アンテナ装置４および一対の第２アンテナ装置１７の４つのアンテナ装置のうちのいずれからも検出信号を受信しない。無線タグ３の状態が禁止状態であった場合に、４つのアンテナ装置のうちのいずれからも検出信号を受信しないときに、応答制御部１３は、無線タグ３の状態を許可状態に切り替えてもよい。 The user further separates from the gate 15 inside the management area A0. The user passes through the point (8). The distance between the point (8) and the pair of first antenna devices 4 is R0 or more. The distance between the point (7) and the pair of second antenna devices 17 is R0 or more. At this time, the receiving unit 11 does not receive the detection signal from any of the four antenna devices of the pair of first antenna devices 4 and the pair of second antenna devices 17. When the state of the wireless tag 3 is the prohibited state and the detection signal is not received from any of the four antenna devices, the response control unit 13 may switch the state of the wireless tag 3 to the permitted state. Good.
　なお、利用者が管理領域Ａ０から退域する場合においても、入退管理システム１は、利用者が管理領域Ａ０に入域する場合と同様に動作する。このとき、一対の第１アンテナ装置４は、管理領域Ａ０の内側に近い一対のアンテナ装置である。また、一対の第２アンテナ装置１７は、管理領域Ａ０の外側に近い一対のアンテナ装置である。 Even when the user leaves the management area A0, the entry / exit management system 1 operates in the same manner as when the user enters the management area A0. At this time, the pair of first antenna devices 4 is a pair of antenna devices close to the inside of the management area A0. Further, the pair of second antenna devices 17 is a pair of antenna devices near the outside of the management area A0.
　図８は、実施の形態２に係る無線タグの動作の例を示すフローチャートである。 FIG. 8 is a flowchart showing an example of the operation of the wireless tag according to the second embodiment.
　ステップＳ０１において、応答制御部１３は、無線タグ３の状態が禁止状態であるかを判定する。判定結果がＮｏの場合に、無線タグ３の動作は、ステップＳ０２に進む。判定結果がＹｅｓの場合に、無線タグ３の動作は、ステップＳ０７に進む。 In step S01, the response control unit 13 determines whether the state of the wireless tag 3 is a prohibited state. When the determination result is No, the operation of the wireless tag 3 proceeds to step S02. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S07.
　ステップＳ０２において、無線タグ３は、受信部１１が両方の第１アンテナ装置４から検出信号を受信したかを判定する。判定結果がＮｏの場合に、無線タグ３の動作は、ステップＳ０１に進む。判定結果がＹｅｓの場合に、無線タグ３の動作は、ステップＳ０３に進む。 In step S02, the wireless tag 3 determines whether the receiving unit 11 has received the detection signal from both first antenna devices 4. When the determination result is No, the operation of the wireless tag 3 proceeds to step S01. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S03.
　ステップＳ０３において、強度判定部１２は、受信部１１が受信した検出信号の両方の強度を判定する。その後、無線タグ３の動作は、ステップＳ０４に進む。 In step S03, the intensity determination unit 12 determines the intensity of both detection signals received by the reception unit 11. After that, the operation of the wireless tag 3 proceeds to step S04.
　ステップＳ０４において、強度判定部１２は、受信した検出信号の信号強度が両方とも第１閾値以上であるかを判定する。判定結果がＮｏの場合に、無線タグ３の動作は、ステップＳ０１に進む。判定結果がＹｅｓの場合に、無線タグ３の動作は、ステップＳ０５に進む。 In step S04, the intensity determination unit 12 determines whether the signal intensities of the received detection signals are both equal to or higher than the first threshold value. When the determination result is No, the operation of the wireless tag 3 proceeds to step S01. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S05.
　ステップＳ０５において、発信部１４は、応答信号を発信する。その後、無線タグ３の動作は、ステップＳ０６に進む。 In step S05, the transmission unit 14 transmits a response signal. After that, the operation of the wireless tag 3 proceeds to step S06.
　ステップＳ０６において、応答制御部１３は、無線タグ３の状態を禁止状態に切り替える。その後、無線タグ３の動作は、ステップＳ０１に進む。 In step S06, the response control unit 13 switches the state of the wireless tag 3 to the prohibited state. After that, the operation of the wireless tag 3 proceeds to step S01.
　ステップＳ０７において、無線タグ３は、受信部１１が一対の第１アンテナ装置４および一対の第２アンテナ装置１７のうちの少なくともいずれかから検出信号を受信したかを判定する。判定結果がＮｏの場合に、無線タグ３の動作は、ステップＳ１０に進む。判定結果がＹｅｓの場合に、無線タグ３の動作は、ステップＳ０８に進む。 In step S07, the wireless tag 3 determines whether the receiving unit 11 has received the detection signal from at least one of the pair of first antenna devices 4 and the pair of second antenna devices 17. When the determination result is No, the operation of the wireless tag 3 proceeds to step S10. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S08.
　ステップＳ０８において、強度判定部１２は、受信部１１が受信した検出信号の強度を判定する。その後、無線タグ３の動作は、ステップＳ０９に進む。 In step S08, the intensity determination unit 12 determines the intensity of the detection signal received by the reception unit 11. After that, the operation of the wireless tag 3 proceeds to step S09.
　ステップＳ０９において、強度判定部１２は、受信部１１が受信した検出信号のうち少なくともいずれかの信号強度が第２閾値以上であるかを判定する。判定結果がＹｅｓの場合に、無線タグ３の動作は、ステップＳ０１に進む。判定結果がＮｏの場合に、無線タグ３の動作は、ステップＳ１０に進む。 In step S09, the intensity determination unit 12 determines whether at least one of the detection signals received by the reception unit 11 has a signal intensity equal to or higher than the second threshold value. When the determination result is Yes, the operation of the wireless tag 3 proceeds to step S01. When the determination result is No, the operation of the wireless tag 3 proceeds to step S10.
　ステップＳ１０において、応答制御部１３は、無線タグ３の状態を許可状態に切り替える。その後、無線タグ３の動作は、ステップＳ０１に進む。 In step S10, the response control unit 13 switches the state of the wireless tag 3 to the permitted state. After that, the operation of the wireless tag 3 proceeds to step S01.
　以上に説明したように、実施の形態２に係る無線タグ３において、受信部１１は、一対の第２アンテナ装置１７の各々が他方の側に発信する検出信号を受信する。一対の第２アンテナ装置１７は、一対の第１アンテナ装置４よりゲート１５の出口側において通路１６の中央を挟んで両側に配置される。発信部１４は、応答信号を発信した後に応答信号の発信が禁止される。発信部１４は、一対の第１アンテナ装置４および一対の第２アンテナ装置１７の少なくともいずれかが発信する検出信号の信号強度に基づいて応答信号の発信の禁止が解除される。 As described above, in the wireless tag 3 according to the second embodiment, the receiving unit 11 receives the detection signal transmitted by each of the pair of second antenna devices 17 to the other side. The pair of second antenna devices 17 are arranged on both sides of the pair of first antenna devices 4 on the exit side of the gate 15 with the center of the passage 16 interposed therebetween. The transmission unit 14 is prohibited from transmitting the response signal after transmitting the response signal. The transmission unit 14 releases the prohibition of transmission of the response signal based on the signal strength of the detection signal transmitted by at least one of the pair of first antenna devices 4 and the pair of second antenna devices 17.
　これにより、発信部１４は、利用者がゲート１５の通路１６を通行している間に応答信号を再発信しない。このため、無線タグ３において、消費電力が抑えられる。また、無線タグ３は、利用者が通路１６の途中において滞留した場合においても、検出信号の信号強度に基づいて滞留を検知できる。このため、通路１６の途中において滞留した後にゲート１５の出口側のアンテナ装置による検出信号の信号強度が大きい領域を利用者が通過しても、発信部１４は、応答信号を再発信しない。ここで、入退管理システム１において、利用者の通行は、ゲート１５の入口側のアンテナ装置からの検出信号に応答する応答信号をゲート１５の入口側のアンテナ装置が受信することで検出される。このような入退管理システム１においても、ゲート１５の出口側のアンテナ装置からの検出信号に応答する応答信号をゲート１５の出口側のアンテナ装置が受信することで管理領域Ａ０への入域を退域と誤検知することが抑制される。 As a result, the transmitting unit 14 does not retransmit the response signal while the user is passing through the passage 16 of the gate 15. Therefore, the power consumption of the wireless tag 3 can be suppressed. Further, the wireless tag 3 can detect the retention based on the signal strength of the detection signal even when the user stays in the middle of the passage 16. Therefore, even if the user passes through a region where the signal strength of the detection signal by the antenna device on the exit side of the gate 15 is high after staying in the middle of the passage 16, the transmitting unit 14 does not retransmit the response signal. Here, in the entrance / exit management system 1, the passage of the user is detected by the antenna device on the entrance side of the gate 15 receiving a response signal in response to the detection signal from the antenna device on the entrance side of the gate 15. .. Even in such an entry / exit management system 1, the antenna device on the exit side of the gate 15 receives a response signal in response to the detection signal from the antenna device on the exit side of the gate 15 to enter the management area A0. False detection of exit is suppressed.
　また、発信部１４は、一対の第１アンテナ装置４および一対の第２アンテナ装置１７が発信する検出信号の信号強度がいずれも第２閾値を下回るときに応答信号の発信の禁止が解除される。第２閾値は、第１閾値より低い予め設定された値である。 Further, the transmitting unit 14 releases the prohibition of transmitting the response signal when the signal strength of the detection signal transmitted by the pair of first antenna devices 4 and the pair of second antenna devices 17 is lower than the second threshold value. .. The second threshold is a preset value lower than the first threshold.
　応答信号の発信の禁止は、発信部１４が応答信号を再発信しない領域において解除される。これにより、利用者の通行の方向をより高い精度で検出できる。 The prohibition of transmission of the response signal is released in the area where the transmission unit 14 does not retransmit the response signal. As a result, the direction of passage of the user can be detected with higher accuracy.
　また、発信部１４は、一対の第１アンテナ装置４および一対の第２アンテナ装置１７が発信する検出信号がいずれも検出されないときに応答信号の発信の禁止が解除される。 Further, the transmission unit 14 is released from the prohibition of transmission of the response signal when neither of the detection signals transmitted by the pair of first antenna devices 4 and the pair of second antenna devices 17 is detected.
　これにより、発信部１４による応答信号の発信の制御は、第２閾値によらずに行われる。これにより、無線タグ３において設定するパラメータが増加しない。このため、入退管理システム１の設定が複雑になりにくい。このとき、無線タグ３は、受信した検出信号の信号強度と第２閾値との比較による応答信号の発信の制御を行わなくてもよい。 As a result, the transmission of the response signal by the transmission unit 14 is controlled regardless of the second threshold value. As a result, the parameters set in the wireless tag 3 do not increase. Therefore, the setting of the entry / exit management system 1 is less likely to be complicated. At this time, the wireless tag 3 does not have to control the transmission of the response signal by comparing the signal strength of the received detection signal with the second threshold value.
　なお、ゲート１５が検出信号の伝播範囲に対して長い場合に、一対の第１アンテナ装置４からの検出信号の伝播範囲と一対の第２アンテナ装置１７からの検出信号の伝播範囲とが重なり合わないことがある。この場合に、応答制御部１３は、無線タグ３の状態が禁止状態であるときに、一対の第２アンテナ装置１７からの検出信号の信号強度の少なくとも一方が第２閾値以上になるまで禁止状態を維持してもよい。これにより、ゲート１５の通路１６の途中において受信部１１が４つのアンテナ装置のいずれからの検出信号も受信しない領域があったとしても、応答制御部１３は、通路１６の途中において無線タグ３の状態を許可状態に切り替えない。このため、長いゲート１５においても、利用者の通行の方向をより高い精度で検出できる。 When the gate 15 is longer than the propagation range of the detection signal, the propagation range of the detection signal from the pair of first antenna devices 4 and the propagation range of the detection signal from the pair of second antenna devices 17 overlap. Sometimes not. In this case, when the state of the wireless tag 3 is the prohibited state, the response control unit 13 is prohibited until at least one of the signal strengths of the detection signals from the pair of second antenna devices 17 becomes equal to or higher than the second threshold value. May be maintained. As a result, even if there is a region in the middle of the passage 16 of the gate 15 where the receiving unit 11 does not receive the detection signal from any of the four antenna devices, the response control unit 13 can use the wireless tag 3 in the middle of the passage 16. Do not switch the state to the allowed state. Therefore, even in the long gate 15, the direction of passage of the user can be detected with higher accuracy.
　また、４つのアンテナ装置の各々は、検出信号の干渉を避けるように、順番に検出信号を発信してもよい。このとき、応答制御部１３は、例えば順番に検出信号が発信される一周期の間に４つのアンテナ装置の各々から受信した検出信号の信号強度に基づいて、無線タグ３の状態を制御してもよい。また、４つのアンテナ装置の各々は、検出信号の干渉を避けるように、互いに異なる周波数の検出信号を発信してもよい。 Further, each of the four antenna devices may transmit the detection signal in order so as to avoid interference of the detection signal. At this time, the response control unit 13 controls the state of the wireless tag 3 based on the signal strength of the detection signals received from each of the four antenna devices during one cycle in which the detection signals are sequentially transmitted, for example. May be good. Further, each of the four antenna devices may emit detection signals having different frequencies so as to avoid interference of the detection signals.
　本発明に係る入退管理システムは、利用者の入退域が管理される管理領域に適用できる。本発明に係る無線タグは、当該入退管理システムに適用できる。 The entry / exit management system according to the present invention can be applied to a management area in which the entry / exit area of a user is managed. The wireless tag according to the present invention can be applied to the entrance / exit management system.
　１　入退管理システム、　２　入退管理装置、　３　無線タグ、　４　第１アンテナ装置、　５　副制御装置、　６　照合装置、　７　開閉装置、　８　主制御装置、　９　発信アンテナ、　１０　受信アンテナ、　１１　受信部、　１２　強度判定部、　１３　応答制御部、　１４　発信部、　１５　ゲート、　１６　通路、　１７　第２アンテナ装置、　１ａ　ハードウェア、　１ｂ　プロセッサ、　１ｃ　メモリ、　Ａ０　管理領域、　Ａ１　進入検知エリア、　Ａ２　離脱検知エリア、　Ｃ　中心線 1 entry / exit management system, 2 entry / exit management device, 3 wireless tag, 4 1st antenna device, 5 sub control device, 6 collation device, 7 opening / closing device, 8 main control device, 9 transmitting antenna, 10 receiving antenna, 11 receiving Unit, 12 strength judgment unit, 13 response control unit, 14 transmitter unit, 15 gate, 16 passage, 17 second antenna device, 1a hardware, 1b processor, 1c memory, A0 management area, A1 approach detection area, A2 departure detection Area, C center line

Claims (5)

  1. 　利用者の入退域が管理される管理領域の境界に設けられたゲートの通路の中央を挟んで両側に配置される一対の第１アンテナ装置の各々が他方の側に発信する検出信号を受信する受信部と、
    　前記受信部が受信する検出信号の信号強度を判定する強度判定部と、
    　前記一対の第１アンテナ装置から発信された検出信号の信号強度の両方が予め設定された第１閾値以上の信号強度であると前記強度判定部が判定するときに応答信号を発信する発信部と、
    　を備える入退管理システムの無線タグ。     Each of the pair of first antenna devices arranged on both sides of the center of the gate passage provided at the boundary of the control area where the user's entry / exit area is controlled receives the detection signal transmitted to the other side. Receiver and
    A strength determination unit that determines the signal strength of the detection signal received by the reception unit, and
    A transmitter that transmits a response signal when the strength determination unit determines that both signal strengths of the detection signals transmitted from the pair of first antenna devices are signal strengths equal to or higher than a preset first threshold value. ,
    A wireless tag for an entry / exit management system.
  2. 　前記受信部は、前記一対の第１アンテナ装置より前記ゲートの出口側において前記通路の中央を挟んで両側に配置される一対の第２アンテナ装置の各々が他方の側に発信する検出信号を受信し、
    　前記発信部は、前記応答信号を発信した後に前記応答信号の発信が禁止され、前記一対の第１アンテナ装置および前記一対の第２アンテナ装置の少なくともいずれかが発信する検出信号の信号強度に基づいて前記応答信号の発信の禁止が解除される
    　請求項１に記載の入退管理システムの無線タグ。     The receiving unit receives a detection signal transmitted from each of the pair of second antenna devices arranged on both sides of the pair of first antenna devices on the exit side of the gate across the center of the passage to the other side. And
    The transmitting unit is prohibited from transmitting the response signal after transmitting the response signal, and is based on the signal strength of the detection signal transmitted by at least one of the pair of first antenna devices and the pair of second antenna devices. The wireless tag of the entry / exit management system according to claim 1, wherein the prohibition of transmission of the response signal is lifted.
  3. 　前記発信部は、前記一対の第１アンテナ装置および前記一対の第２アンテナ装置が発信する検出信号の信号強度がいずれも前記第１閾値より低い予め設定された第２閾値を下回るときに前記応答信号の発信の禁止が解除される
    　請求項２に記載の入退管理システムの無線タグ。     The transmitting unit responds when the signal strength of the detection signals transmitted by the pair of first antenna devices and the pair of second antenna devices is lower than a preset second threshold value lower than the first threshold value. The wireless tag of the entry / exit management system according to claim 2, wherein the prohibition of signal transmission is lifted.
  4. 　前記発信部は、前記一対の第１アンテナ装置および前記一対の第２アンテナ装置が発信する検出信号がいずれも検出されないときに前記応答信号の発信の禁止が解除される
    　請求項２に記載の入退管理システムの無線タグ。     The input according to claim 2, wherein the transmission unit is released from the prohibition of transmission of the response signal when neither the pair of first antenna devices nor the detection signals transmitted by the pair of second antenna devices are detected. Wireless tag for exit management system.
  5. 　利用者の入退域が管理される管理領域の境界に設けられたゲートの通路の中央を挟んで両側に配置され、各々が他方の側に検出信号を発信する一対の第１アンテナ装置と、
    　前記一対の第１アンテナ装置から発信された検出信号の信号強度の両方が予め設定された第１閾値以上の信号強度であると判定するときに、応答信号を発信する無線タグと、
    　前記一対の第１アンテナ装置の少なくとも一方が前記無線タグから前記応答信号を受信するときに、当該無線タグを所持する利用者の通行を検出する通行検出装置と、
    　を備える入退管理システム。     A pair of first antenna devices arranged on both sides of the center of the gate passage provided at the boundary of the management area where the user's entry / exit area is managed, and each transmitting a detection signal to the other side.
    When it is determined that both the signal strengths of the detection signals transmitted from the pair of first antenna devices are the signal strengths equal to or higher than the preset first threshold value, the wireless tag that transmits the response signal and
    When at least one of the pair of first antenna devices receives the response signal from the radio tag, the traffic detection device that detects the traffic of the user who possesses the radio tag, and
    An entry / exit management system equipped with.
PCT/JP2019/032860 2019-08-22 2019-08-22 Wireless tag of entry/exit management system, and entry/exit management system WO2021033317A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021540611A JP7248129B2 (en) 2019-08-22 2019-08-22 Access control system wireless tag and access control system
PCT/JP2019/032860 WO2021033317A1 (en) 2019-08-22 2019-08-22 Wireless tag of entry/exit management system, and entry/exit management system
CN201980099314.2A CN114245914B (en) 2019-08-22 2019-08-22 Wireless tag for access management system and access management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/032860 WO2021033317A1 (en) 2019-08-22 2019-08-22 Wireless tag of entry/exit management system, and entry/exit management system

Publications (1)

Publication Number Publication Date
WO2021033317A1 true WO2021033317A1 (en) 2021-02-25

Family

ID=74660465

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/032860 WO2021033317A1 (en) 2019-08-22 2019-08-22 Wireless tag of entry/exit management system, and entry/exit management system

Country Status (3)

Country Link
JP (1) JP7248129B2 (en)
CN (1) CN114245914B (en)
WO (1) WO2021033317A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016170517A (en) * 2015-03-11 2016-09-23 オムロン株式会社 Passage management system, mobile device, gate device, entry notification program, passage management program, and passage management method
WO2019030821A1 (en) * 2017-08-08 2019-02-14 三菱電機株式会社 Passage detection system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5073312B2 (en) * 2007-02-16 2012-11-14 株式会社日立製作所 IC tag system
JP4816609B2 (en) * 2007-09-25 2011-11-16 パナソニック電工株式会社 Location management system and reader and terminal used therefor
JP2011205579A (en) * 2010-03-26 2011-10-13 Seiko Epson Corp Data collection system, and wireless tag
CN104919473B (en) * 2013-01-22 2017-08-08 三菱电机株式会社 Reading device and entry and exit control system
WO2017187603A1 (en) * 2016-04-28 2017-11-02 三菱電機株式会社 Entry/exit management system
CN107025708B (en) * 2017-03-29 2020-12-04 北京小米移动软件有限公司 Vehicle management method and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016170517A (en) * 2015-03-11 2016-09-23 オムロン株式会社 Passage management system, mobile device, gate device, entry notification program, passage management program, and passage management method
WO2019030821A1 (en) * 2017-08-08 2019-02-14 三菱電機株式会社 Passage detection system

Also Published As

Publication number Publication date
JP7248129B2 (en) 2023-03-29
JPWO2021033317A1 (en) 2021-12-09
CN114245914A (en) 2022-03-25
CN114245914B (en) 2023-09-22

Similar Documents

Publication Publication Date Title
US9728025B2 (en) Portable device, communication device, and communication system
JP6212204B2 (en) Vehicle communication system
US9396597B2 (en) Smart entry system
KR20160101948A (en) Method for utilizing a wireless connection to unlock an opening
JP2011063961A (en) Electronic key
US9406179B2 (en) Method for processing a presence signal in a hands-free vehicle access system having capacitive sensors
JP2012046918A (en) Communication system for vehicle door unlock
JP6971156B2 (en) Communications system
JP2018038025A (en) Wireless communication correctness determination system
JP6760782B2 (en) Remote control system
KR20130010717A (en) Smart key apparatus for strengthening security and method thereof
WO2021033317A1 (en) Wireless tag of entry/exit management system, and entry/exit management system
CN104919495A (en) Security gate system
WO2019225430A1 (en) Distance measurement system
WO2019225431A1 (en) Distance measurement system
JP2015227239A (en) Control system for elevator
RU2661015C1 (en) Method of recognition of communication manipulation between a remotely controlled blocking unit and corresponding remote control
JP6721126B2 (en) Traffic detection system
JP2014025223A (en) Electronic key system
KR101533428B1 (en) Method For Preventing Relay Station Attack By Using Moving Path of Smart Key
KR20100029988A (en) Detecting apparatus of smart key in passive keyless entry system
JP4462210B2 (en) Building security system
JP6228758B2 (en) Switchgear control system
JP2017008677A (en) Automatic door
JP6048185B2 (en) Door locking system, wireless transmission device, and wireless communication device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19942241

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021540611

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19942241

Country of ref document: EP

Kind code of ref document: A1