JP2020149561A - Entry/exit management system, entry/exit management device and entry/exit management method - Google Patents

Abstract

To prevent occurrence of an erroneous alarm and allow entry/exit of a user to be accurately identified while maintaining a securely receivable state of an LF signal of a radio tag device, even when a transmitting antenna for the LF signal is arranged in a ceiling part in the vicinity of a gate of a facility.SOLUTION: An LF signal is transmitted from a first LF signal transmitting antenna LF-A and a second LF signal transmitting antenna LF-B, which are arranged at different positions of a ceiling part in the vicinity of a gate of a facility, to an area A and an area B where a part of a receivable area is overlapped. A radio tag device 20 determines whether or not a user is in an overlapped area on the basis of a reception state of the LF signal, and only when the user is in the overlapped area, transmits an alarm signal to an operator terminal device 30. The operator terminal device 30, when receiving the alarm signal transmitted by the radio tag device 20, informs an operator of the facility that the user is likely to pass through the gate, by using sound and light.SELECTED DRAWING: Figure 2

Description

The present invention relates to an entrance / exit management system that manages entrance / exit of facility users to various facilities such as nursing care facilities, conference rooms, and event venues located in a real space.

Conventionally, various systems have been proposed for managing the entry / exit of users to various facilities by using a semi-active wireless tag device (for example, RFID: Radio Frequency Patent Finder) that can be carried by the user (for example). Patent Document 1). In this type of entrance / exit management system, a reader device for a wireless tag device is provided near the entrance / exit of the facility and in various places in the facility, and when a user carrying the wireless tag device passes through the entrance / exit of the facility, the reader device is wireless. By reading information from the tag device, it is common to manage the passage status and location of each user's entrance / exit.

On the other hand, in the aging society in recent years, the number of dementia patients is increasing at a rapid pace, and the increase in the number of missing persons in dementia patients and the increase in the number of protections for unidentified dementia patients are becoming social problems. For this reason, in facilities such as medical institutions and long-term care facilities, this type of entrance / exit management system is applied to prevent facility residents such as dementia patients from going out without the permission of the facility operator. Attempts have been made (for example, Non-Patent Document 1).

In this unauthorized outing prevention system, a semi-active wireless tag device equipped with a coiled antenna (hereinafter, also referred to as “coil antenna”) is carried by a facility resident (that is, a user), and an entrance / exit of the facility is carried. A floor mat type antenna that generates a magnetic field is installed on the floor, and an LF signal in the LF frequency band is transmitted from the floor mat antenna toward the ceiling. Then, when the user carries the wireless tag device and passes over the floor mat antenna, the LF signal is received by the antenna of the wireless tag device, the wireless tag device 20 transitions to the active state, and the communication used by the facility operator. Send an alarm signal to the terminal device.

On the other hand, when the communication terminal device receives the alarm signal transmitted in this way, it uses voice and light to indicate that the user may be going out without the permission of the facility operator based on the alarm signal. , It is configured to notify the facility operator.

JP-A-2009-77355

Dipusu Co., Ltd., "What is the" semi-active method "of the wandering detection system? "Search [Searched on February 21, 2019], Internet <URLhttp: //www.deps1972.com/article/15090351.html>

By the way, there is a high possibility that wheelchairs and trolleys enter and exit at the entrances and exits of this type of facility, which shortens the useful life of the floor mat antenna and may lead to an increase in system operating costs. Further, depending on the structure and operation form of the facility, it is difficult to use the floor mat antenna itself, and there are many needs to install an antenna for transmitting LF signals on the ceiling of the facility entrance / exit area.

On the other hand, when an antenna for transmitting LF signals is installed on the ceiling near the entrance / exit, the signal transmitted from this antenna propagates in a substantially concentric spherical shape, so that the LF signal receivable area is within the facility. There is a possibility that the LF signal will be received by a wireless tag device carried by a user or the like who simply walks in the aisle because it extends to the aisle or other space. In this case, although it is not necessary to activate the alarm, the communication terminal device may have transmitted an alarm signal from the wireless tag device to the communication terminal device and the user may be trying to go out without permission. Will cause a false alarm.

As a method of preventing such false alarms, a coil antenna capable of receiving only a magnetic field component in one direction is adopted for a wireless tag device, and only the magnetic field from the ceiling to the floor (that is, the vertical direction) is adopted. By configuring the wireless tag device so that it can be received, the receivable area of the LF signal transmitted from the antenna for transmitting the LF signal is intentionally narrowed down to a narrow space near the doorway, and the user simply walks in the passage. It is also possible to prevent the alarm signal from being transmitted just by doing so. However, the wireless tag device is not always used in a direction in which the magnetic field can be received at the time of actual use, and depending on the direction in which the wireless tag device is facing, the magnetic field transmitted by the wireless tag device from the antenna. There may be situations where you cannot receive. Therefore, it is difficult to ensure practicality during system operation by this method.

The present invention has been made in view of the circumstances described above, and an object of the present invention is to ensure that the wireless tag device provides an LF signal even when an antenna for transmitting an LF signal is installed on a ceiling or the like near the entrance / exit of a facility. It is an object of the present invention to provide an entrance / exit management system or the like that can prevent the occurrence of false alarms and accurately identify the entrance / exit of a user while maintaining a state in which the signal can be received.

(1) In order to solve the above-mentioned problems, the entrance / exit management system of the present invention is an entrance / exit management system that manages the entrance / exit of a user to various facilities located in a real space, and is located near the entrance / exit of the facility. While using the first antenna installed at the first position, the first signal of the LF frequency band including the first transmitter identification information for identifying the own unit in the entrance / exit management system is transmitted to the first signal near the entrance / exit. Includes second transmitter identification information for identifying the own unit while using the first transmitter that transmits to the area and the second antenna installed at a second position different from the first position near the doorway. A second transmitter that transmits a second signal in the LF frequency band to a second area near the entrance / exit that partially overlaps the first area, and a radio that is carried by the user and receives a signal in the LF frequency band. It has a tag device and a communication terminal device that is used by the operator of the facility and manages the entrance / exit of the user to the facility, and the wireless tag device receives the first signal and the second signal. Based on the above, it is determined whether or not the user is located in the overlapping overlapping area of the first area and the second area, and when it is determined that the user is located in the overlapping area, the own machine is operated. When an alarm signal including tag identification information for identification is transmitted to the communication terminal device and the communication terminal device receives the alarm signal, (1) the radio corresponding to at least one of voice and light. It has a configuration for notifying the operator that a user carrying a tag device may pass through the doorway, or (2) recording that the corresponding user has passed through the doorway.

With this configuration, the entrance / exit management system of the present invention covers the first area and the second area where a part of the receivable area from the first antenna and the second antenna installed at different positions near the facility entrance / exit overlaps. , The first signal and the second signal of the LF frequency band are transmitted, and the user concerned only when it is determined that the corresponding user is located in the overlapping area based on the reception status of the first signal and the second signal. An alarm signal is transmitted from the wireless tag device to the communication terminal device as if it is located near the doorway.

As a result, either one of the first area and the second area extends to a part of the passage in the facility, and the first signal and the first signal and the wireless tag device carried by the user who is simply walking in the passage are used. Even if either one of the second signals is received, the alarm signal will not be transmitted from the wireless tag device unless the user is located in the overlapping area, so that the occurrence of false alarm is surely prevented. be able to.

Further, the entrance / exit management system of the present invention can be configured so that the overlapping area is located only in a narrow area near the entrance / exit by adjusting at least one of the positions and angles of the first antenna and the second antenna. Therefore, even when an antenna capable of receiving magnetic field components in all directions (for example, a triaxial coil antenna) is used as the LF signal receiving antenna of the wireless tag device, the first signal or the second signal is the wireless tag. It is possible to prevent the occurrence of false alarms received by the device, and to realize a state in which the wireless tag device can reliably receive the LF signal, while performing highly practical entrance / exit management.

As a result, in the entrance / exit management system of the present invention, even when the antenna for transmitting the LF signal is installed on the ceiling near the entrance / exit of the facility, the wireless tag device maintains a state in which the LF signal can be reliably received. At the same time, it is possible to reliably prevent the occurrence of false alarms and accurately identify the entry / exit of the user.

(2) Further, in the above configuration, when the wireless tag device receives both the first signal and the second signal within a predetermined scheduled reception time, the corresponding user is located in the overlapping area. It may be determined that the alarm signal is transmitted to the communication terminal device.

Generally, even if a part of the first area and the second area extends to a passage in the facility, only one of the signals corresponding to the area can be received on the passage. It is a situation, and it is not a situation where both can be received at the same time. On the other hand, when the user is located in the overlapping area, the wireless tag device can receive the first signal and the second signal at the same time. Therefore, by setting the scheduled reception time to an appropriate value in advance and determining whether or not both are received within the scheduled reception time, it is possible to accurately identify whether or not the user is located in the overlapping area. , It is possible to detect with high accuracy whether or not the user is located near the doorway.

(3) Further, in the configuration according to claim 1 or 2, the first transmission device and the second transmission device alternately perform the first signal for half a cycle in the same predetermined cycle. And the second signal is transmitted, and the first signal is within the scheduled reception time, with the time in which the wireless tag device has a predetermined time width in the time for the one cycle as the scheduled reception time. And, when the second signal is received alternately, it may be determined that the corresponding user is located in the overlapping area, and the alarm signal may be transmitted to the communication terminal device.

With this configuration, in the entrance / exit management system of the present invention, the first transmitter and the second transmitter alternately transmit the first signal and the second signal for 0.5 seconds each, for example, in a cycle of 1 second. When the wireless tag device alternately receives the first signal and the second signal within the time corresponding to one cycle (that is, 1 second) + α, it is determined that the corresponding user is located in the overlapping area. Then, the alarm signal can be transmitted to the communication terminal device. That is, according to the present invention, it is assumed that the user is located in the overlapping area only when the first signal and the first signal are received in the same state as the transmission state of the first signal and the second signal transmitted alternately. Since the device transmits the alarm signal, the alarm signal can be transmitted only when the user is surely located in the overlapping area, and the possibility of false alarm can be reduced.

(4) Further, in the configuration according to claim 3, when the wireless tag device alternately and repeatedly receives the first signal and the second signal within the scheduled reception time corresponding to the plurality of the cycles, the said A configuration may be adopted in which it is determined that the corresponding user is located in the overlapping area and the alarm signal is transmitted to the communication terminal device.

With this configuration, the entrance / exit management system of the present invention transmits an alarm signal from the wireless tag device to the communication terminal device only when the first signal and the second signal are alternately and repeatedly received for a plurality of cycles. Therefore, the alarm signal is not transmitted unless the user stays in the overlapping area for a predetermined time or longer, and the occurrence of an erroneous alarm can be reliably prevented.

(5) Further, in the configuration according to any one of claims 1 to 4, even if the configuration in which the first antenna and the second antenna are installed at different positions at the same angle is adopted. Good.

With this configuration, the entrance / exit management system of the present invention can freely set the range of the overlapping area near the entrance / exit by adjusting only the positions of the first antenna and the second antenna, so that the angle at the time of antenna installation can be set. It is possible to eliminate the need for adjustment and reduce the work load when installing the antenna.

(6) Further, in the configuration according to claim 1, the third transmitter identification information corresponding to the own unit is used while using the third antenna installed at the third position different from the first position and the second position. A third transmitting device for transmitting a third signal including the above to a third area partially overlapping the overlapping area is further provided, and the first and second antennas are installed on the ceiling portion near the entrance and exit, and the first The three antennas are installed near the floor of the doorway, the third transmitting device transmits the third signal with a transmission power that the third area does not reach the ceiling, and the wireless tag device transmits the third signal. When all of the first signal to the third signal are received within the predetermined reception scheduled time, the corresponding user is located in the area where all of the first area, the second area, and the third area overlap. A configuration may be adopted in which the alarm signal is transmitted to the communication terminal device.

In general, electromagnetic waves in the LF frequency band have the property of penetrating building materials that make up a building. Therefore, when the first antenna and the second antenna are provided on the ceiling of a facility, the LF signal transmitted from each antenna May reach the upper floor of the floor where the doorway where the antenna is installed (for example, the second floor if the doorway is located on the first floor), and an overlapping area may be formed on the upper floor as well. ..

In this case, if the user stays in the overlapping area on the upper floor for a predetermined time or longer, an alarm signal is transmitted from the wireless tag device even though the user is on the upper floor, and the user will go out without permission. There is a possibility that the alarm will be activated by mistake. However, according to the above configuration, the alarm signal is not transmitted from the wireless tag device unless the user is located in the space where the overlapping area of the first area and the second area and the third area further overlap. Therefore, by adjusting the transmission power of the third signal so that the third signal does not reach the upper floor, the alarm signal is transmitted by the wireless tag device of the user located on the upper floor, and a false alarm occurs. It can be reliably prevented.

(7) Further, in the configuration according to claim 6, the first transmitting device, the second transmitting device, and the third transmitting device transmit the first to third signals in a predetermined order, and also. A configuration in which the alarm signal is transmitted to the communication terminal device when the wireless tag device receives all of the first to third signals in the order of transmission of the first to third signals within the scheduled reception time. It may be adopted.

With this configuration, in the entrance / exit management system of the present invention, an alarm signal is not transmitted from the wireless tag device unless the wireless tag device receives each signal in the order of transmission of the first to third signals, so that an erroneous alarm occurs. The possibility can be further reduced.

(8) Further, in the configuration according to any one of claims 1 to 7, the wireless tag device has a triaxial coil antenna capable of receiving magnetic field components in all directions, and the triaxial coil antenna. A configuration in which the first to third signals are received may be adopted.

With this configuration, the entrance / exit management system of the present invention can receive any magnetic field component in any direction, so that the wireless tag device can reliably receive all of the first to third signals and is used. The wireless tag device can receive each signal without depending on the orientation of the wireless tag device, and can ensure practicality during system operation.

(9) Further, in the configuration according to any one of claims 1 to 8, the wireless tag device has the first transmission device identification information and the second transmission included in the first signal and the second signal received. The device identification information is added to the alarm signal and transmitted to the communication terminal device, and when the communication terminal device receives the alarm signal, the first transmitting device identification added to the received alarm signal is identified. Based on the information and the second transmitter identification information, the entrance / exit where the corresponding user is located is specified, and the information regarding the specified entrance / exit is recorded in association with the user as information regarding the entrance / exit passed by the user. It may be adopted.

With this configuration, in the entrance / exit management system of the present invention, when each user passes through the entrance / exit in the facility, information about the passed entrance / exit is recorded in association with the user, so that the user in the facility Even if is not found, the location of the user can be easily estimated, and the work load of the facility operator can be reduced.

(10) Further, in the configuration according to any one of claims 1 to 9, when the user is a resident of a long-term care facility and the communication terminal device receives the alarm signal, the user enters the long-term care facility. A configuration may be adopted in which the operator is notified that the person may be going out without permission.

With this configuration, the entrance / exit management system of the present invention reliably detects that a long-term care facility resident such as a dementia patient is going to go out without the permission of the facility operator, and there is a possibility of going out without the permission of the facility operator. It is possible to notify that there is something and prevent the facility resident from going out without permission.

(11) Further, the entrance / exit management device of the present invention is an entrance / exit management device that is carried by a user who uses various facilities located in a real space and manages the entrance / exit of the user to the facility. 1) The first transmission that transmits the first signal of the LF frequency band including the first transmission device identification information for identifying the own machine while using the first antenna installed at the first position near the entrance / exit of the facility. While using the device and (2) a second antenna installed at a second position different from the first position near the doorway, the second of the LF frequency band including the second transmitter identification information for identifying the own device. A second transmitting device that transmits two signals to a second area near the entrance / exit that partially overlaps the first area, a receiving means that receives the first signal and the second signal from each of the first, and the first. Based on the reception status of the signal and the second signal, the determination means for determining whether or not the user is located in the overlapping overlapping area of the first area and the second area, and the determination means for the corresponding user. When it is determined that the device is located in the overlapping area, an alarm signal including the management device identification information for identifying the own device is transmitted to an external communication terminal device to (1) enter or leave the facility. It has a configuration having a transmission means for notifying the operator of the facility that the user who is trying to exist, or (2) recording that the corresponding user has passed through the doorway.

With this configuration, the entrance / exit management device of the present invention covers the first area and the second area where a part of the receivable area from the first antenna and the second antenna installed at different positions near the facility entrance / exit overlaps. , The first signal and the second signal of the LF frequency band are transmitted, and it is determined whether or not the corresponding user is located in the overlapping area based on the reception status of the first signal and the second signal, and the user is in the overlapping area. Only when it is determined that the user is located in, an alarm signal is transmitted to the communication terminal device assuming that the user is located near the doorway.

As a result, according to the entrance / exit management device of the present invention, one of the first area and the second area extends to a part of the passage in the facility, and the user simply walking in the passage. Even if either the first signal or the second signal is received by the wireless tag device carried by the user, the alarm signal will not be transmitted from the wireless tag device unless the user is located in the overlapping area. Therefore, it is possible to reliably prevent the occurrence of false alarms.

Further, in the entrance / exit management device of the present invention, by adjusting at least one of the positions and angles of the first antenna and the second antenna, the first signal and the first signal and the first signal are in a state where the overlapping area is located only in a narrow area near the entrance / exit. Since two signals are received, even when an antenna capable of receiving magnetic field components in all directions (for example, a triaxial coil antenna) is used as an antenna for receiving the LF signal, the first signal and the second signal can be used. It is highly practical while preventing at least one of them from being received by the LF signal receiving antenna and causing an erroneous alarm, and realizing a state in which the first signal and the second signal can be reliably received. Entry / exit management can be performed.

As a result, the entrance / exit management device of the present invention maintains a state in which the wireless tag device can reliably receive the LF signal even when the antenna for transmitting the LF signal is installed on the ceiling or the like near the entrance / exit of the facility. , It is possible to reliably prevent the occurrence of false alarms and accurately identify the entry / exit of the user.

(12) Further, the entrance / exit management method of the present invention is an entrance / exit management method for managing the entrance / exit of a user to various facilities located in a real space, and (1) the first position near the entrance / exit of the facility. The first transmitter for identifying the own unit The first signal in the LF frequency band including the identification information is transmitted to the first area near the entrance / exit of the facility while using the first antenna installed in the facility. (2) While using the second antenna installed at the second position different from the first position, the second signal of the LF frequency band including the second transmitter identification information for identifying the own unit is used. Carried by the user, the first step of transmitting the first signal and the second signal from each of the second transmission device that transmits to the second area near the entrance / exit that partially overlaps the first area. The second step in which the wireless tag device having a receiving circuit for receiving the signal of the LF frequency band receives the first signal and the second signal, and the reception status of the first signal and the second signal by the wireless tag device. Based on, in the third step of determining whether or not the user is located in the overlapping overlapping area of the first area and the second area, and in the third step, the user is located in the overlapping area. When it is determined that the signal is used by the operator of the facility, the wireless tag device uses an alarm signal including the wireless tag device identification information for identifying the own device, and the user enters / exits the facility. When the communication terminal device receives the alarm signal in the fourth step of transmitting to the communication terminal device that manages the above, (1) the user carrying the corresponding wireless tag device by at least one of voice and light. It has a configuration having a fifth step of notifying the operator that there is a possibility of passing through the doorway, or (2) recording that the corresponding user has passed through the doorway.

With this configuration, the entrance / exit management method of the present invention covers the first area and the second area where a part of the receivable area from the first antenna and the second antenna installed at different positions near the facility entrance / exit overlaps. , The first signal and the second signal of the LF frequency band are transmitted, and the user concerned only when it is determined that the corresponding user is located in the overlapping area based on the reception status of the first signal and the second signal. The wireless tag device transmits an alarm signal to the communication terminal device as if it were located near the doorway.

As a result, according to the entrance / exit management method of the present invention, one of the first area and the second area extends to a part of the passage in the facility, and the user simply walking in the passage. Even if either the first signal or the second signal is received by the wireless tag device carried by the wireless tag device, the alarm signal is not transmitted from the wireless tag device unless the user is located in the overlapping area. Therefore, it is possible to reliably prevent the occurrence of false alarms.

Further, the entrance / exit management method of the present invention can be configured so that the overlapping area is located only in a narrow area near the entrance / exit by adjusting at least one of the positions and angles of the first antenna and the second antenna. Therefore, even when an antenna capable of receiving magnetic field components in all directions (for example, a triaxial coil antenna) is used as the LF signal receiving antenna of the wireless tag device, the first signal or the second signal is the wireless tag. It is possible to prevent the occurrence of false alarms received by the device, and to realize a state in which the wireless tag device can reliably receive the LF signal, while performing highly practical entrance / exit management.

As a result, the entrance / exit management method of the present invention maintains a state in which the wireless tag device can reliably receive the LF signal even when the antenna for transmitting the LF signal is installed on the ceiling or the like near the entrance / exit of the facility. , It is possible to reliably prevent the occurrence of false alarms and accurately identify the entry / exit of the user.

In the entrance / exit management system, entrance / exit management device, and entrance / exit management method of the present invention, the wireless tag device reliably receives the LF signal even when the antenna for transmitting the LF signal is installed on the ceiling near the entrance / exit of the facility. While maintaining the possible state, it is possible to reliably prevent the occurrence of false alarms and accurately identify the entry / exit of the user.

It is a system configuration diagram which shows the configuration example in one Embodiment of the entrance / exit management system which concerns on this invention. It is a figure which shows the positional relationship between the installation situation of the antenna and the receivable area around the facility entrance / exit in one Embodiment. It is an image diagram which shows the outline operation of the entrance / exit management system in one Embodiment. It is a block diagram which shows the structure of the wireless tag device in one Embodiment. It is a figure which shows an example of the data stored in the doorway management table recorded in the wireless tag device of one embodiment. It is a flowchart which shows the alarm signal transmission processing executed by the control part of the wireless tag device in one Embodiment. It is a system block diagram which shows the structure of the entrance / exit management system in the modification 2 which concerns on this invention. It is a figure which shows an example of the data recorded in the user management database provided in the operator terminal apparatus in the modification 2. It is a figure which shows an example of the data recorded in the facility management database provided in the operator terminal apparatus of the modification 2. It is a flowchart which shows the process executed in the operator terminal apparatus of the modification 2.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an entry according to the present invention for a system for managing the passage status of facility entrances and exits of facility residents in a long-term care facility and realizing a function of preventing unauthorized going out of each facility resident. This is an embodiment in which an exit management system, an entrance / exit management device, and an entrance / exit management method are applied. However, the embodiments described below do not unreasonably limit the contents of the present invention described in the claims, and all the configurations described in the present embodiment are essential constituent requirements of the present invention. Not always.

[1] Configuration and Outline of Entrance / Exit Management System First, the configuration and outline of the entrance / exit management system 1 according to the embodiment of the present invention will be described with reference to FIGS. Note that FIG. 1 is a system configuration diagram showing a configuration example of the entrance / exit management system 1 of the present embodiment, and FIG. 2 is an LF installed on the ceiling near the facility entrance / exit in the entrance / exit management system 1 of the present embodiment. FIG. 3 is a diagram showing the positional relationship between the signal transmitting antenna (hereinafter, also referred to as “LF signal transmitting antenna”) and the receivable area of the LF signal transmitted by each LF signal transmitting antenna. It is an image diagram which shows the outline operation of the entrance / exit management system 1 of a form. Further, in these drawings, only some users (that is, facility residents), the wireless tag device 20, and the entrance / exit EE are displayed in order to prevent the drawings from becoming complicated. That is, the entrance / exit management system 1 has more users and the wireless tag device 20 than shown in the figure, and the actual facility F is provided with more doorways EE than shown in the figure, and each doorway EE is provided. Refers to two transmitters (FIGS. 1 and 2) that transmit LF signals using two antennas for transmitting LF signals (LF-A and LF-B in the case of being illustrated in FIGS. 1 and 2) which are not shown. In the case illustrated in the above, the first transmitter 10-1 and the second transmitter 10-2) are provided. It should be noted that each entrance / exit EE may be provided with three or more LF signal transmission antennas and transmission devices, and this point will be described in detail in the section of modified examples.

As shown in FIGS. 1 and 2, the entrance / exit management system 1 of the present embodiment uses (a) the first LF signal transmission antenna LF-A installed at the first position near the entrance / exit EE of the facility F. The first transmitter 10-1 that transmits (broadcasts) the first signal of the LF frequency band (for example, 125 kHz band) including the first transmitter ID for identifying the own unit in the entrance / exit management system 1 and ( b) Using the second LF signal transmission antenna LF-B installed at a second position different from the first position, the second signal of the LF frequency band including the second transmission device ID corresponding to the own machine is transmitted. The second transmitting device 10-2 (hereinafter, referred to as "transmitting device 10" when it is not necessary to distinguish between the first transmitting device 10-1 and the second transmitting device 10-2) and (c). () A plurality of wireless tag devices 20 having an LF receiving circuit 210 and an LF signal receiving antenna 211, which will be described later, while being carried by each user who is a resident of the facility F, and (d) a staff room SR in the facility F (d) For example, it is a communication terminal device installed in a nurse station or the like, and has an operator terminal device 30 that manages information about a user who is in the facility F, and is received by a wireless tag device 20. It is determined whether or not the user is actually located in the space near the entrance / exit EE according to the reception status of the first signal and the second signal, and only when it is determined that the user is actually located in the vicinity of the entrance / exit EE. , The purpose is to notify the facility operator that the user may go out without permission and prevent the user from going out without permission. The LF signal transmitting antennas LF-A and B may be built in the first transmitting device 10-1 and the second transmitting device 10-2, and may be externally connected to each transmitting device 10. May be good. Further, the operator terminal device 30 of the present embodiment constitutes, for example, a "communication terminal device" within the scope of claims.

In order to realize the functions described above, in the entrance / exit management system 1 of the present embodiment, as illustrated in FIG. 2, the first transmitting device 10-1 uses the first LF signal transmitting antenna LF-A. The first signal is transmitted to the area A100-A near the entrance / exit EE, and the second transmission device 10-2 uses the second LF signal transmission antenna LF-B to partially cover the area A100-A. The second signal is transmitted to the overlapping areas B100-B (step [1] in FIG. 3). At this time, the first transmitter 10-1 and the second transmitter 10-2 each have a predetermined time cycle (for example, 1 second) for half a cycle (for example, 0.5 seconds each). , The first signal and the second signal are alternately transmitted (step [1] in FIG. 3). For example, the areas A100-A and B100-B of the present embodiment correspond to the "first area" and the "second area" in the claims, respectively.

Then, the wireless tag device 20 compares the reception status of the first signal and the second signal transmitted by the first transmission device 10-1 and the second transmission device 10-2 with the predetermined alarm signal transmission conditions. On the other hand, when it is determined that the reception status satisfies the alarm signal transmission condition, the identification information for identifying the own device in the entrance / exit management system 1 for the operator terminal device 30 (hereinafter, "tag ID"). (Also also referred to as), an alarm signal indicating that the corresponding user is located near the entrance / exit EE is transmitted (step [2] in FIG. 3), and when the operator terminal device 30 receives this alarm signal, the alarm signal is signaled. The user is identified by the tag ID included in the above, and at least one of the voice and the light notifies the facility operator that the identified user may be going out without permission (step [3] in FIG. 3). ..
The specific method for the operator terminal device 30 to notify the facility operator of the possibility of going out without permission is arbitrary. For example, the operator terminal device 30 is provided with a warning light, and the warning light is used. An alarm sound such as a buzzer may be emitted while blinking or the like.

Here, using the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B, the first signal and the second signal transmitted from each transmitting device 10 are the sources of transmission, respectively. Since it has the property of propagating from the 1LF signal transmitting antenna LF-A and the 2nd LF signal transmitting antenna LF-B in a substantially concentric spherical shape, a part of the area A100-A or the area B100-B is a facility. It may extend to passages and other spaces in F.

In particular, the LF signal transmitting antennas LF-A and B are installed on the ceiling of the facility F, and the wireless tag device 20 carried by the user located around the antennas LF-A and B can reliably receive the first signal and the second signal. In order to create a situation, at least the transmission power at which the first signal and the second signal transmitted from the LF signal transmission antennas LF-A and B installed on the ceiling reach the floor of the facility F is used. You need to make a call. In this case, the areas A100-A and the area B100-B spread not only in the vertical direction from the ceiling to the floor but also in the horizontal direction, and the user who is only walking in the aisle (for example, the figure). There is a possibility that the wireless tag device 20 carried by the user A) illustrated in 2 may receive either the first signal or the second signal.

In such a case, if the wireless tag device 20 simply transmits an alarm signal to the operator terminal device 30 when the LF signal is received as in the conventional entrance / exit management system, the user simply uses the facility F. A false alarm may occur as the user may go out without permission even though he / she is only walking in the passage inside.

Therefore, in the entrance / exit management system 1 of the present embodiment, at least one of the positions and angles of the two LF signal transmitting antennas LF-A and LF-B provided at different positions on the ceiling near the entrance / exit EE is adjusted. Therefore, the overlapping area 100-A & B capable of receiving the first LF signal and the second LF signal at the same time is installed so as to fit in a narrow space near the entrance / exit EE, and the first signal and the first signal and from the LF signal transmitting antennas LF-A and B are installed. We decided to adopt a configuration that transmits the second signal. Then, the wireless tag device 20 determines whether or not the user is located in the overlapping area 100-A & B from the reception status of the first signal and the second signal, and determines that the user is located in the overlapping area 100-A & B. Only when it is determined, an alarm signal is transmitted to the operator terminal device 30 to notify the operator that the user may go out without the permission of the facility operator.

At this time, the wireless tag device 20 compares the reception status of the first signal and the second signal with the predetermined alarm signal transmission condition, and determines whether or not the user is located in the overlapping area 100-A & B. It has become like. The specific content of the alarm signal transmission condition is arbitrary, but when the user is located in the overlapping area 100-A & B, the wireless tag device 20 has both the first signal and the second signal. Are in a state where they can be received at the same time. Therefore, when the wireless tag device 20 receives both the first signal and the second signal within the predetermined reception scheduled time, the alarm signal transmission condition is satisfied. A configuration may be adopted in which the wireless tag device 20 transmits an alarm signal.

However, in the present embodiment, the first transmitter 10-1 and the second transmitter 10-2 have a predetermined time cycle (for example, 1 second) for half a cycle (for example, 0.5 seconds each). Since the configuration is such that the first signal and the second signal are alternately transmitted, when the first signal and the second signal are alternately received within the time corresponding to this one cycle + α (for example, 0.1 second). It is assumed that the wireless tag device 20 adopts a configuration in which an alarm signal transmission condition is satisfied and the wireless tag device 20 transmits the alarm signal.

By adopting this method, the entrance / exit management system 1 of the present embodiment can transmit an alarm signal while accurately identifying that the user is located in the overlapping area 100-A & B, so that a false alarm occurs. It is possible to surely prevent the above, and it is possible to realize a highly practical entrance / exit management function and an unauthorized outing prevention function. The order in which the wireless tag device 20 receives the first signal and the second signal is (pattern 1) a pattern of receiving the first signal → the second signal, and (2) the second signal → the first signal. There are two possible reception patterns, one is to receive the first signal and the other is to receive the second signal. However, since the order in which the first signal and the second signal are received depends on the movement direction of the user, it is possible to receive in any pattern. However, it may be determined that the alarm signal transmission condition is satisfied. The scheduled reception time may be set to the time for exactly one cycle, but since the reception condition becomes very severe, one cycle + α in which the time for one cycle has a predetermined time width It is desirable to set the time of to the scheduled reception time.

Further, when the user stays in the overlapping area 100-A & B for a predetermined time or longer, the user is surely located near the corresponding entrance / exit EE. In this case, the wireless tag device 20 uses the first signal and the first signal. The second signal is alternately and repeatedly received. Therefore, in order to improve the detection accuracy of the user being located in the overlapping area 100-A & B and surely prevent the occurrence of false alarms, the first signal and the second signal are transmitted within the time corresponding to a plurality of cycles. It is desirable to set the alarm signal transmission condition to receive alternately and repeatedly.

[2] Schematic configuration of the entrance / exit management system 1 The first transmission device 10-1 and the second transmission device 10-2 of the present embodiment are basically the same devices, and data including the transmission device ID of the own device. (For example, packet data in which the transmitter ID is described in the header or payload) is modulated by the carrier of the LF frequency band, and the first signal and the second signal are converted into the first LF signal transmission antenna LF-A and the corresponding antenna LF-A. While using the second LF signal transmission antenna LF-B, transmission is performed to the corresponding area. Regarding the basic configurations of the first transmitter 10-1 and the second transmitter 10-2, D is provided except that the first signal or the second signal including the transmitter ID corresponding to the own device is transmitted. It is the same as the conventional LF signal transmitting device having a / A converter, a modulation circuit, a filter circuit, an amplifier circuit, etc., and each LF signal transmitting antenna LF-A and B has the same configuration as the conventional coil antenna. Since it is a thing, the details are omitted.

The wireless tag device 20 is a wireless tag device such as an active RFID device having a built-in battery 260 described later. Here, the built-in battery 260 built in the wireless tag device 20 basically has a small capacity, and it is difficult to maintain an active state at all times. Therefore, in the present embodiment, the wireless tag device 20 transmits the alarm signal only during the period in which the LF signal (that is, at least one of the first signal and the second signal) is received by the LF signal receiving antenna 211. It is configured to transition to an active state in which it is possible to transmit an alarm signal, and to maintain an inactive sleep mode in a state in which an LF signal is not received.

With this configuration, the wireless tag device 20 of the present embodiment functions as a semi-active wireless tag device, and transmits an alarm signal only when the LF signal is received while minimizing the power consumption of the built-in battery 260. Is possible. The form of the wireless tag device 20 is arbitrary, and in addition to the wristband type and the ankle band type, a form that can be attached to or sewn on clothing can be adopted.

Further, the wireless tag device 20 of the present embodiment has a UHF transmission unit 220 described later, and compares the reception status of the first signal and the second signal received by the LF reception circuit 210 with the alarm signal transmission conditions. When the reception status satisfies the alarm signal transmission condition, the data including the tag ID of the own machine (for example, the data such as the packet including the tag ID in the header part or the payload part) is set in the UHF frequency band (for example, 400 MHz or 920 MHz). While being modulated by the carrier wave, it is transmitted to the operator terminal device 30 as an alarm signal. The alarm signal may be transmitted from the wireless tag device 20 to the operator terminal device 30 directly from the wireless tag device 20 to the operator terminal device 30, for example, the first transmission device 10-1 and the operator terminal device 30. A signal receiving circuit in the UHF frequency band is provided in either one of the second transmitting devices 10-2, the transmitting device 10 is connected to the operator terminal device 30 by wire or wirelessly, and the transmitting device 10 is a wireless tag device 20. The transmitting device 10 may function as a relay device for transmitting the alarm signal to the operator terminal device 30 when the alarm signal is received from the operator terminal device 30.

The operator terminal device 30 is a communication terminal device such as a PC (personal computer), a smartphone, a tablet-type information communication terminal device, and an alarm device used by the operator of the facility F, and has a function of managing information about facility residents. In addition to having, an operation unit composed of a UHF signal reception antenna and a reception circuit for receiving signals in the UHF frequency band (not shown), a speaker, a warning light, a display unit such as a liquid crystal display, a keyboard, a mouse, and the like. A user who carries the wireless tag device 20 which is the source of the alarm signal based on the tag ID included in the alarm signal when the UHF receiving circuit receives the alarm signal transmitted by the wireless tag device 20. While specifying the above, a warning notification function for notifying the operator by at least one of voice and light that the user may be going out without the permission of the facility operator is realized. The operator terminal device 30 may manage the passage history of the entrance / exit EE by each resident in detail, but this point will be described in detail in the section of the modified example, and in the present embodiment, this point will be described in detail. , It is assumed that it has only the function of notifying the operator by voice or the like that there is a possibility of going out without permission.

[3] Wireless tag device 20
Next, the configuration of the wireless tag device 20 of the present embodiment will be described with reference to FIGS. 4 and 5. Note that FIG. 4 is a block diagram showing a configuration example of the wireless tag device 20 of the present embodiment, and FIG. 5 is a block diagram of data stored in the entrance / exit management table TBL recorded in the wireless tag device 20 of the present embodiment. It is a figure which shows an example.

As shown in FIG. 4, the wireless tag device 20 of the present embodiment has an LF receiving circuit 210 having an LF signal receiving antenna 211, a UHF transmitting unit 220 for transmitting an alarm signal in the UHF frequency band, and specifying the current date and time. It controls the timer 230 for measuring time, the recording unit 240 for recording various data, and each unit of the wireless tag device 20, and transmits an alarm signal according to the reception status of the first signal and the second signal. A control unit 250 that executes the processing for the above, a built-in battery 260 that is built in the wireless tag device 20 and supplies power for the wireless tag device 20 to function as an active tag, and a RAM (Random Access) used as a work area. It has a Memory) 270, and each of the above parts is interconnected by a bus B, and has a configuration capable of exchanging data between each element. For example, the LF signal receiving antenna 211 and the LF receiving circuit 210 of the present embodiment jointly form a "receiving means" within the scope of the claims.

The LF signal receiving antenna 211 is composed of an antenna (for example, a triaxial coil antenna) capable of receiving magnetic field components in all directions, and realizes high reception sensitivity for magnetic field components in all directions. The specific configuration of the LF signal receiving antenna 211 is arbitrary. For example, three coils having high reception sensitivity with respect to magnetic fields in directions orthogonal to each other are provided so that magnetic field components in all directions can be received. The configuration may be adopted. However, since a triaxial coil antenna provided with three coils having high reception sensitivity with respect to magnetic fields in directions orthogonal to each other is already known (for example, Japanese Patent Application Laid-Open No. 2015-233271), details are omitted. To do.

As described above, by adopting a three-axis coil antenna having a configuration capable of receiving magnetic field components in all directions as the LF signal receiving antenna 211, it is possible to ensure practicality during system operation.

On the other hand, when the LF signal receiving antenna 211 having the above configuration is used, the LF signal receivable area extends not only in the vertical direction from the ceiling to the floor but also in the horizontal direction. It is difficult to intentionally narrow the receivable area as in the case of mounting an antenna capable of receiving only a magnetic field component in one direction, and it is difficult to prevent the occurrence of an erroneous alarm.

However, in the entrance / exit management system 1 of the present embodiment, the first LF signal transmitting antenna LF-A and the second LF signal are placed on the ceiling near the entrance / exit EE so that the overlapping area 100-A & B fits in the narrow area near the entrance / exit EE. It has a configuration in which a first signal and a second signal are transmitted with the transmission antenna LF-B installed. Further, the wireless tag device 20 transmits an alarm signal assuming that the corresponding user is located in the overlapping area 100-A & B only when the first signal and the second signal are alternately received within the time for one cycle. Therefore, even if a triaxial coil antenna is used as the LF signal receiving antenna 211 to widen the receivable range, false alarms can be reliably prevented from occurring during system operation. Practicality can also be ensured.

When a user invades any of the area A100-A, the area B100-B, and the overlapping area 100-A & B while carrying the wireless tag device 20 equipped with the LF signal receiving antenna 211 described above, each LF signal is transmitted. The first signal and the second signal transmitted from the transmitting device 10 using the antennas LF-A and B change the magnetic flux passing through the coil antenna, and the LF signal receiving antenna 211 receives the LF signal. As a result of receiving the signal, the signal is supplied from the LF signal receiving antenna 211 to the LF receiving circuit 210.

The LF receiving circuit 210 has an amplifier circuit and various filter circuits in addition to an A / D converter and a demodulation circuit (not shown), and includes the signal supplied from the LF signal receiving antenna 211 while amplifying the signal. The transmitter ID is demodulated, and the demodulated transmitter ID is supplied to the control unit 250. In particular. In the present embodiment, when the LF signal is received by the LF signal receiving antenna 211, the LF receiving circuit 210 supplies an interrupt signal to the control unit 250 via the bus B, and the control unit 250 is in an active state from the sleep mode. It is designed to transition to. Then, the LF receiving circuit 210 is the transmitter ID included in the LF signal (that is, the first signal and the second signal) received by the LF signal receiving antenna 211 after the control unit 250 transitions to the active state. Is being demodulated, and the demodulated transmitter ID is supplied to the control unit 250 via the bus B.

The UHF transmission unit 220 has a UHF antenna 221 for transmitting a signal in the UHF frequency band, an amplification circuit, a filter circuit, a D / A converter, a modulation circuit, etc. (not shown), and is supplied from the control unit 250. The data is modulated by the carrier in the UHF frequency band and transmitted to the operator terminal device 30 as an alarm signal using the UHF antenna 221.

The recording unit 240 is composed of a memory such as a NAND type or NOR type flash memory or an EEPROM (Electrically Erasable Programmable Read Only Memory), and a program recording unit 241 and a determination reference data recording unit 242 are provided in the recording area. There is.

In addition to the program for driving the wireless tag device 20, the program recording unit 241 determines whether or not the corresponding user is located in the overlapping area 100-A & B based on the reception status of the first signal and the second signal. When the determination is made and it is determined that the user is located in the overlapping area 100-A & B, an alarm signal transmission program for executing a process of transmitting an alarm signal to the operator terminal device 30 is recorded.

The determination standard data recording unit 242 contains the determination standard data corresponding to the alarm signal transmission condition including the scheduled reception time information regarding the scheduled reception time, the tag ID assigned to the wireless tag device 20, and the entrance / exit management table TBL. Is recorded.

The entrance / exit management table TBL is a table in which data for managing the transmission device 10 installed in each entrance / exit EE in the facility F is stored, and as shown in FIG. 5, each entrance / exit in the entrance / exit management system 1 In association with the entrance / exit ID for identifying the EE, (a) the name of the entrance / exit and (b) the transmission device ID corresponding to the transmission device 10 installed in the entrance / exit EE are stored in association with each other. To. For example, in FIG. 7, data is stored when the transmitting device 10 corresponding to the transmitting device IDs “T001” and “T002” is installed in the “first entrance (front entrance)” corresponding to the entrance / exit ID “EE001”. An example is shown. The data stored in the entrance / exit management table TBL may be recorded in the wireless tag device 20 in advance by using the operator terminal device 30.

Further, in the present embodiment, the determination reference data recording unit 242 corresponds to the scheduled reception time information indicating the time corresponding to one cycle + α, and the first transmission device 10-1 and the second transmission device 10-2. Judgment reference data including information that defines that the alarm signal transmission condition is satisfied when the transmitter IDs are alternately received is recorded.

The control unit 250 is configured by a CPU (Central Processing Unit), and realizes the location area determination unit 251 and the alarm signal transmission processing unit 252 by executing various programs recorded in the program recording unit 241. .. The location area determination unit 251 of the present embodiment constitutes, for example, a "determination means" in the claims, and the alarm signal transmission processing unit 252 is linked with the UHF transmission unit 220 to form the claims. Consists of the "transmission means" in. In the present embodiment, the control unit 250 and the UHF transmission unit 220 maintain the sleep mode when the interrupt signal is not supplied from the LF reception circuit 210, and the time when the interrupt signal is supplied from the LF reception circuit 210. It has a configuration to shift from the sleep mode to the active state. As a result, the wireless tag device 20 of the present embodiment can realize the function as a semi-active wireless tag device and minimize the power consumption of the built-in battery 260.

The location area determination unit 251 is the source of the LF signal received by the LF reception circuit 210 from the transmitter ID included in the LF signal received by the LF reception circuit 210 and the data stored in the entrance / exit management table TBL. While specifying the entrance / exit EE in which the transmission device 10 is installed, the transmission device IDs corresponding to the two transmission devices 10 installed in the entrance / exit EE are read out. Then, the location area determination unit 251 specifies whether or not the read transmission device ID is alternately received within the scheduled reception time defined by the determination reference data based on the read transmission device ID and the determination condition data. Then, it is determined whether or not the user is located in the overlapping area 100-A & B.

The alarm signal transmission processing unit 252 reads the tag ID recorded in the determination reference data recording unit 242 when the corresponding user is determined to be located in the overlapping area 100-A & B by the location area determination unit 251. , The alarm signal including the tag ID is transmitted to the operator terminal device 30 in conjunction with the UHF transmission unit 220.

[4] Operation of Entrance / Exit Management System 1 Next, an alarm signal transmission process executed in the wireless tag device 20 of the present embodiment will be described with reference to FIG. Note that FIG. 6 is a flowchart showing an alarm signal transmission process executed by the control unit 250 of the wireless tag device 20 of the present embodiment. Further, prior to this processing, it is assumed that necessary data has been stored in the entrance / exit management table TBL, and the wireless tag device 20 including the control unit 250 is in the sleep mode to consume the built-in battery 260. It shall be maintained in a minimal condition.

In this state, when the user carries the wireless tag device 20 and invades any of the area A100-A, the area B100-B, and the overlapping area 100-A & B, the LF signal receiving antenna 211 enters the corresponding area. The transmitted LF signal (that is, at least one of the first signal and the second signal) is received (step Sa1). As a result, an interrupt signal is supplied from the LF receiving circuit 210 to the bus B, and the wireless tag device 20 transitions from the sleep mode to the active state (step Sa2).

Upon transition to the active state in this way, the location area determination unit 251 executes the alarm signal transmission program recorded in the program recording unit 241 and sets the transmitter ID included in the LF signal received by the LF reception circuit 210. After temporarily storing in the RAM 270, the entrance / exit management table TBL is searched using the transmitter ID as a search key, and another unit installed in the gateway EE in which the transmitter 10 corresponding to the transmitter ID is installed. The transmission device ID and the determination reference data corresponding to the transmission device 10 are read out, and the transmission device ID is temporarily stored in the RAM 270 (step Sa3).

Next, the location area determination unit 251 compares the reception status of the LF signal with the determination reference data while interlocking with the timer 230 (step Sa4). At this time, the location area determination unit 251 starts the time counting by the timer 230 from the reception start timing of the LF signal until the scheduled reception time (that is, one cycle + α minute time) included in the determination reference data elapses. It is determined whether or not the LF signal including the two transmitter IDs temporarily stored in the RAM 270 is alternately received.

Then, when the location area determination unit 251 determines as a result of this comparison that the alarm signal transmission condition is not satisfied (step Sa5: No), the process ends without transmitting the alarm signal, whereas in step Sa4 As a result of the comparison, when it is determined that the alarm signal transmission condition is satisfied (step Sa5: Yes), after reading the tag ID recorded in the determination reference data recording unit 242 (step Sa6), it is linked with the UHF transmission unit 220. After transmitting the alarm signal including the read tag ID to the operator terminal device 30 (step Sa7), the process ends.

When the alarm signal is transmitted from the wireless tag device 20 in this way, the operator terminal device 30 identifies the user carrying the wireless tag device 20 based on the tag ID included in the alarm signal, while identifying the user. Notify the facility operator by at least one of voice and light that the user may be going out without permission (step [3] in FIG. 3).

As described above, the entrance / exit management system 1 of the present embodiment is from the first LF signal transmission antenna LF-A and the second LF signal transmission antenna LF-B installed at different positions near the entrance / exit EE of the facility F. When the first signal and the second signal are transmitted to the area A100-A and the area B100-B where a part of the receivable area overlaps, and it is determined that the user is located in the overlapping area 100-A & B. The wireless tag device 20 has a configuration in which an alarm signal is transmitted to the operator terminal device 30. Therefore, according to the entrance / exit management system 1 of the present embodiment, the user passes through the passage in a situation where either area A100-A or area B100-B extends to a part of the passage in the facility, and the user passes through the passage and wirelessly. Even when the tag device 20 receives either the first signal or the second signal, it is possible to prevent the wireless tag device 20 from transmitting an alarm signal, and it is possible to reliably prevent the occurrence of a false alarm. it can.

Further, the entrance / exit management system 1 of the present embodiment adjusts at least one of the positions and angles of the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B to narrow an area near the entrance / exit. Since the overlapping area 100-A & B can be configured to be located only in, an antenna capable of receiving magnetic field components in all directions as the LF signal receiving antenna 211 of the wireless tag device 20 (for example, a triaxial coil antenna). Even when the above is used, it is possible to prevent the first signal or the second signal from being received by the wireless tag device 20 and causing an erroneous alarm. Therefore, the entrance / exit management system 1 of the present embodiment can surely prevent the occurrence of false alarms while realizing a state in which the wireless tag device 20 can reliably receive the LF signal.

Further, in the entrance / exit management system 1 of the present embodiment, the first transmitting device 10-1 and the second transmitting device 10-2 correspond to each half cycle in a predetermined time cycle (for example, 1 second) (for example). A configuration is adopted in which the first signal and the second signal are alternately transmitted (for 0.5 seconds each), and the wireless tag device 20 alternately receives the first signal and the second signal within the time corresponding to one cycle + α. Since the configuration is adopted in which the alarm signal is transmitted only in the case, the user can be reliably identified as being located in the overlapping area 100-A & B, and the possibility of false alarms being reduced. Can be done.

[5] Modification example [5-1] Modification example 1
In the above embodiment, the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B are installed on the ceiling near the entrance / exit EE of the facility F, and the overlapping area 100 is installed in a narrow space near the entrance / exit EE. The positions and angles of the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B are adjusted so that the −A & B fits, and the wireless tag device 20 adjusts the reception status of the first signal and the second signal. Based on this, it has been determined whether or not the corresponding user is located in the overlapping area 100-A & B. Then, the wireless tag device 20 has adopted a configuration in which the alarm signal is transmitted only when it is determined by the determination that the user is located in the overlapping area 100-A & B.

Here, since the electromagnetic waves in the LF frequency band have the property of penetrating the building materials constituting the building, the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B are provided on the ceiling of the facility. In this case, the LF signals (that is, the first signal and the second signal) transmitted from the two LF signal transmitting antennas LF-A and B are installed in both LF signal transmitting antennas LF-A and B. There is a possibility that the upper floor of the floor where the entrance / exit EE is located (for example, the second floor when the entrance / exit EE is located on the first floor) is reached, and an overlapping area 100-A & B is also formed on the upper floor.

In this case, if the user stays in the overlapping area 100-A & B on the upper floor for a predetermined time or longer, an alarm signal is transmitted from the wireless tag device 20 even though the user is on the upper floor, and the user There is a possibility that a false alarm will occur as if you were going out without permission.

Therefore, in this modification, in addition to the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B provided on the ceiling portion near the entrance / exit EE, the floor portion near the entrance / exit EE, or A third transmitting device having a third LF signal transmitting antenna provided on the wall surface near the floor is further provided, and the third transmitting device is used to cover an area C that overlaps a part of the overlapping area 100-A & B. , It was decided to adopt a configuration in which a third signal including a transmitter ID corresponding to the third transmitter is transmitted. The area C of this modification corresponds to, for example, the "third area" in the claims.

Then, in the present modification, the wireless tag device 20 transmits an alarm signal only when it is determined that the user is located in the space where the overlapping area 100-A & B and the area C (not shown) further overlap. ing.

On the other hand, even when the third LF signal transmitting antenna is installed on the floor or in the vicinity of the floor, when the third signal reaches the ceiling of the facility F, the areas A100-A, B100-B, and C There is a possibility that the area where everything overlaps will spread upstairs. Therefore, in the present modification, the third transmitter adopts a configuration in which the third signal is transmitted by the transmission power in which the receivable area (that is, the area C) of the third signal does not reach the ceiling of the facility F. are doing.

Further, when the user is located in the overlapping space of the overlapping area 100-A & B and the area C, the wireless tag device 20 is in a state where all of the first signal, the second signal, and the third signal can be received at the same time. ing. Therefore, in the present modification, when the wireless tag device 20 receives all of the first to third signals within the predetermined reception scheduled time, the corresponding user is located in the space where all the areas overlap. It was decided to adopt a configuration that is judged to be.

Further, in the present modification, the first transmitter 10-1, the second transmitter 10-2, and the third transmitter 10-2 are placed in a predetermined order for a predetermined time (for example, 0.5 seconds each). The first signal, the second signal, and the third signal are transmitted, and the wireless tag device 20 takes a time required to transmit all of the first to third signals (for example, each signal is transmitted for 0.5 seconds). In the case of transmitting one by one, the scheduled reception time is set to a time having a predetermined time width for 1.5 seconds), and the first to third signals are transmitted in the order of transmission within the scheduled reception time. A method of transmitting an alarm signal when all signals are received is adopted. That is, in the present modification, when the wireless tag device 20 receives the first to third signals in the same manner as the transmission mode of the first to third signals within the scheduled reception time, the user can overlap the entire area. It determines that it is located inside and sends an alarm signal. The order in which the first transmitting device 10-1, the second transmitting device 10-2, and the third transmitting device transmit signals is arbitrary, and any of the first to third signals is set first and determined in advance. The signals may be transmitted in the order given. Further, the transmission order of each signal may be recorded in advance in the determination standard data recording unit 242 as the determination reference data.

With this configuration, in this modification, the alarm signal is not transmitted from the wireless tag device 20 unless the user is located in the space where the overlapping area 100-A & B and the area C further overlap. Further, since the third transmission device transmits the third signal with the transmission power that the third signal does not reach the upper floor, the alarm signal is transmitted by the wireless tag device 20 carried by the user located on the upper floor. It is possible to reliably prevent a situation in which a false alarm occurs.

In this modification, a configuration in which three LF signal transmitting antennas and transmitting devices are provided is adopted, but four or more LF signal transmitting antennas and transmitting devices are provided, and each transmitting device is provided in its own unit. When the LF signal including the corresponding transmitter ID (that is, the first to third signals, etc.) is transmitted to the area corresponding to the own device, and it is determined that the user is located in the space where all the areas overlap. A configuration in which only an alarm signal is transmitted may be adopted. By adopting this configuration, it is possible to further narrow the area that matches the alarm signal transmission condition and improve the detection accuracy of the user in the vicinity of the entrance / exit EE.

[5-2] Modification 2
The entrance / exit management system 1 of the above embodiment informs the operator that when the user determines that the user is located in the overlapping area 100-A & B near the entrance / exit EE, the user may go out without permission. The configuration to notify was adopted. On the other hand, this modification is for realizing a function of not generating an alarm when going out under the control of the operator and managing when and where each user passed through the doorway. is there.

The entrance / exit management system 1 of this modified example that realizes the above functions will be described with reference to FIGS. 7 to 10. 7 is a system configuration diagram showing the configuration of the entrance / exit management system 1 in this modified example, and FIG. 8 is a user management database provided in the operator terminal device 300 of this modified example (hereinafter, “database” is referred to as “database”. A diagram showing an example of data recorded in 31 is shown in FIG. 9, and FIG. 9 is a diagram showing an example of data recorded in the facility management DB 32 provided in the operator terminal device 300 of the modified example, FIG. Is a flowchart showing a process executed by the operator terminal device 300 in this modification.

As shown in FIG. 7, in the present modification, the operator terminal device 300 is provided with a user management DB 31 and a facility management DB 32 in addition to the configuration of the operator terminal device 30 of the above embodiment shown in FIG. In this modification, the configuration in which the user management DB 31 and the facility management DB 32 are provided in the operator terminal device 300 is illustrated, but for these DB 31 and 32, a recording device is provided on a network (not shown). It is also possible to adopt a configuration in which the operator terminal device 300 can freely access these DBs 31 and 32 via the network by recording in the recording device.

The user management DB 31 is a DB in which data for managing each user who is a facility resident is recorded, and as shown in FIG. 8, a user ID for identifying each user in the entrance / exit management system 1 and a user ID are used. User information is recorded in association with each other.

This user information includes, for example, (1) the name of the user corresponding to the user ID, (2) the health condition, (3) the tag ID of the wireless tag device 20 carried by the user, and (3) the user. The doorway ID corresponding to the last passing doorway, which is the last passing doorway EE, (3) the date and time of the last passage, (4) emergency contact information, (5) whether or not to submit an outing notification, and (6) in charge. In the case of including information such as the person's name and (7) scheduled tour time, and illustrated in FIG. 10, the user named "△ Hanako" of "mild dementia" corresponding to the user ID "U001" is tagged. I am carrying the wireless tag device 20 indicated by the ID "T001", the emergency contact is "03-1234-****", the name of the person in charge is "○○ Taro", and the outing notification is submitted. The user when the next scheduled patrol time is "20:00" and the doorway EE indicated by the doorway ID "EE001" is last passed at "20:00:35 on March 10, 2019". An example of the information is shown.

Further, the facility management DB 32 is a DB for recording data for managing the transmission device 10 installed at each entrance / exit EE in the facility F, and is provided in (1) facility F as illustrated in FIG. The entrance / exit ID corresponding to each entrance / exit EE, (2) the name of the entrance / exit EE, and (3) the transmission device ID of the transmission device 10 installed at the entrance / exit EE are recorded in association with each other. It has become.

Then, in the entrance / exit management system 1 of the present modification having the above configuration, when the user approaches any of the entrance / exit EEs and invades the overlapping area 100-A & B, the wireless tag device 200 gives the first signal. And the second signal are both received. In this state, the wireless tag device 200 of the present modification is different from the above embodiment, and the operator adds the transmitter ID received by the own device to the alarm signal including the tag ID of the own device. It is designed to be transmitted to the terminal device 300.

On the other hand, as shown in FIG. 10, when the operator terminal device 300 receives the alarm signal (step Sb1), the operator terminal device 300 extracts the tag ID and the transmitting device ID included in the alarm signal (step Sb2), and the extracted tag The user management DB 31 is searched based on the ID to identify the user carrying the corresponding wireless tag device 200 (step Sb3).

Next, the operator terminal device 300 determines whether or not the outing notification has been submitted by the specified user (step Sb4).

Then, when the operator terminal device 300 determines in this determination that the outing notification has not been submitted (step Sb4: No), the operator terminal device 300 executes the notification process and informs the facility operator by at least one of voice and light in step Sb3. After notifying that the specified user may go out without permission (step Sb5), the facility management DB 32 is searched based on the transmitter ID extracted from the alarm signal, and the entrance / exit EE where the user is located is determined. After the identification (step Sb6), the user management DB 31 is updated (step Sb7), and the process ends. At this time, the operator terminal device 300 stores the doorway ID of the doorway EE specified in step Sb6 in the storage field of the final passage doorway ID of the user management DB 31 associated with the user ID of the user specified in step Sb3. At the same time, the reception date and time of the alarm signal is specified and stored in the field of the last passage date and time.

With this configuration, in the entrance / exit management system 1 of this modified example, it is possible to manage when and where each user passed through the entrance / exit, so that when the user is not found in the facility F, It is possible to easily identify when and which doorway EE the user passed through, and reduce the time and effort required to search for the missing user. Further, in the entrance / exit management system 1 of this modified example, even if a user who has submitted an outing notification invades the overlapping area 100-A & B, the alarm does not operate, so that only unauthorized going out is surely prevented. At the same time, it is possible to prevent an increase in the workload of the operator.

[5-3] Modification 3
In the above modification 2, in order to prevent the user from going out without permission, a configuration is adopted in which the LF signal transmitting antennas LF-A and B and the transmitting device 10 are provided only at the entrance / exit EE which is the boundary between the facility F and the outside world. However, the LF signal transmitting antennas LF-A and B and the transmitting device 10 are installed near the partition door of each room in the facility F, and the operator terminal indicates which room the user is going to and from. It may be managed by the device 300.

When this configuration is adopted, at least two LF signal transmitting antennas and a transmitting device 10 are provided for each partition door in the facility F in addition to each entrance / exit EE. Further, in the facility management DB 32, in addition to each entrance / exit EE, a door ID corresponding to each partition door and a transmitting device ID corresponding to the transmitting device installed on the door are recorded.

Then, the wireless tag device 20 transmits the alarm signal to the operator terminal device 300 while adding the transmission device ID included in the received LF signal.

On the other hand, the operator terminal device 300 identifies the user carrying the source wireless tag device 20 each time the alarm signal is transmitted, and the user identifies the user carrying the source wireless tag device 20 and the user identifies the user based on the transmitter ID added to the alarm signal. The passed doorway EE or partition door is specified, and the doorway ID or door ID corresponding to the specified doorway EE or partition door is overwritten and updated in the storage field of the last passing doorway ID of the user in the user management DB 31. To do so. At this time, if the reception date and time of the alarm signal is stored in the storage field of the last passage date and time of the user management DB 31, the user finally enters the storage field of the last passage doorway ID and the last passage date and time of the user management DB 31. The state in which the ID corresponding to the entrance / exit EE or the partition door that has passed or approached and the date and time of passage are stored is maintained. As a result, according to this modification, it is possible to easily estimate where the user is in the facility F. Since the operation for recording the final passage entrance / exit ID and the final passage date / time in the user management DB 31 is basically the same as that of the second modification, details will be omitted.

With this configuration, in this modified example, even if the user is not found in the facility F, the facility operator can easily identify the location of each user, and the work load of the operator can be reduced. In addition to being possible, it is possible to reduce the workload of the facility operator by preventing an alarm from being generated when going out under the control of the facility operator.

[5-4] Modification 4
In the above modifications 2 and 3, when the user is located near the entrance / exit EE in a facility such as a long-term care facility, the operator is notified, or the passage history of the entrance / exit EE and the partition door in the facility F is managed. As described as an example, the entrance / exit management system of the present application can also be applied to entrance / exit management for a conference room or the like in an office.

In this case, two LF signal transmitting antennas (LF-A and LF-B in the examples of FIGS. 1, 2 and 9) are provided on the ceiling near the entrance and exit of each conference room, and these LFs are provided. Adjust the positions and angles of both antennas so that the receivable area of the LF signal transmitted from the signal transmitting antenna overlaps in a narrow area near the entrance / exit of the conference room, and the first signal from each LF signal transmitting antenna. And the second signal is transmitted. Further, an entrance / exit ID is assigned to the entrance / exit of each conference room, and the entrance / exit ID of each conference room is associated with the transmission device ID of the transmission device installed at the entrance / exit and recorded in the facility management DB 32.

Then, the wireless tag device 200 is carried by an employee, and when the reception status of the first signal and the second signal satisfies the alarm signal transmission condition, it is determined that the corresponding user has passed the doorway of the corresponding conference room. Therefore, the wireless tag device 200 adds the transmitter ID included in the LF signal received near the entrance / exit of the conference room to the alarm signal and transmits it to the operator terminal device 300.

The operator terminal device 300 identifies the user based on the alarm signal transmitted in this way, identifies the entrance / exit of the conference room through which the user has passed, and determines the final passage / exit ID and the final passage date / time of the user management DB 31. The ID of the specified entrance / exit and the reception date / time of the alarm signal are stored in the storage field of. Since the operation at this time is basically the same as that of the modified examples 2 and 3, the details will be omitted.

With this configuration, this modification can manage when each user entered which conference room in the office, and therefore, the entrance / exit management system of the present application can be applied to the entrance / exit of the conference room in the office. Can be done.

The entrance / exit management system of the present application can also be used for managing the entrance status at the event venue. In this case, two LF signal transmitting antennas (LF-A and LF-B in the examples of FIGS. 1, 2 and 7) are provided on the ceiling near the entrance of the event venue, and these LF signals are provided. Install while adjusting the positions and angles of both LF signal transmitting antennas so that the receivable area of the LF signal transmitted from the transmitting antenna overlaps in a narrow area near the entrance, and each LF signal transmitting antenna The first signal and the second signal are transmitted from the antenna. Then, when the reception status of the first signal and the second signal satisfies the alarm signal transmission condition, the wireless tag device 20 determines that the corresponding user is located in this overlapping area, and determines that the corresponding user is located in this overlapping area, and determines that the operator terminal device 300 Send an alarm signal to.

Based on the alarm signal transmitted in this way, the operator terminal device identifies the relevant user, identifies whether or not the user has purchased the admission ticket, and if not, if not. The event organizer may be notified by sound or light that a person who has not purchased an admission ticket is about to enter.

Similarly, the entrance / exit management system of the present application means that an unauthorized person is trying to enter when managing access to a space that requires various privileges to enter, such as a room that manages documents related to trade secrets. Can also be used in the case of notifying the administrator.

[5-5] Modification 5
In the above-described embodiment and modification, the configuration in which the user carries the wireless tag device 20 or 200 is adopted, but the wireless tag device is used in a portable information communication terminal device such as a smartphone, a mobile phone, or a tablet-type information communication terminal device. Even if the same functions as those of the 20 or 200 are provided and the same processing as that of the wireless tag device 20 or 200 is executed by these information and communication terminal devices to realize the same functions as those of the above-described embodiment and modification. Good.

[5-6] Modification 6
In the above embodiment, the positions and angles of the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B are adjusted so that the overlapping area 100-A & B fits in a narrow area near the entrance / exit EE. However, it is also possible to adjust only the positions of both antennas LF-A and B so that the overlapping area 100-A & B fits in a narrow area near the entrance / exit EE while making the angles of both antennas the same. Further, both antennas LF-A and B are arranged adjacent to each other, and only the angles of both LF signal transmission antennas LF-A and B are adjusted so that the overlapping area 100-A & B fits in a narrow range near the entrance / exit EE. You may try to do it. Further, both antennas LF-A and LF- may be installed in a state where the angles can be adjusted so that the facility operator can freely adjust the installation angles according to the actual usage situation. Regardless of which configuration is adopted, the degree of freedom when installing the LF signal transmission antenna can be improved, and the degree of freedom when operating the system can be improved. As a result of the experiment by the present inventor, the horizontal receivable area of each LF signal transmitting antenna LF-A and B is 6 m in diameter, and the angles of both LF signal transmitting antennas LF-A and B are set. Since it is known that the overlapping area 100-A & B becomes 3 m when the antennas are placed horizontally with respect to the horizontal plane and arranged at intervals of 3 m, both antennas LA and B are set horizontally with respect to the horizontal plane. By installing both antennas LF-A and B at a distance of 3 m, it is possible to set an overlapping area 100-A & B having a size of about 3 m in the vicinity of the entrance / exit EE. Further, since the signal transmission intensity changes depending on the designated method, it is known that the intensity adjustment of the transmission intensity does not have a great influence.

[5-7] Modification 7
In the above-described embodiment and modification, the case where the first LF signal transmitting antenna LF-A and the second LF signal transmitting antenna LF-B are installed on the ceiling near the entrance / exit EE of the facility F has been described as an example. , These may be installed on the wall surface near the entrance / exit EE.

1 ... Entrance / exit management system 10-1 ... 1st transmitter 10-2 ... 2nd transmitter 20, 200 ... Wireless tag device 210 ... LF reception circuit 211 ... LF signal reception antenna 220 ... UHF transmitter 221 ... UHF antenna 230 ... Timer 240 ... Recording unit 241 ... Program recording unit 242 ... Judgment reference data recording unit 250 ... Control unit 251 ... Location area determination unit 252 ... Alarm signal transmission processing unit 260 ... Built-in power supply 270 ... RAM
30, 300 ... Operator terminal device LF-A ... 1st LF signal transmission antenna LF-B ... 2nd LF signal transmission antenna

Claims (12)

It is an entrance / exit management system that manages the entrance / exit of users to various facilities located in the real space.
While using the first antenna installed at the first position near the entrance / exit of the facility, the first signal of the LF frequency band including the first transmitter identification information for identifying the own device in the entrance / exit management system is transmitted. A first transmitter that transmits to the first area near the doorway,
While using the second antenna installed at the second position different from the first position near the entrance / exit, the second signal of the LF frequency band including the second transmitter identification information for identifying the own machine is transmitted. A second transmitter that transmits to a second area near the doorway that partially overlaps the first area,
A wireless tag device carried by the user and receiving a signal in the LF frequency band,
A communication terminal device that is used by the operator of the facility and manages the entrance / exit of the user to the facility.
Have,
The wireless tag device
Based on the reception status of the first signal and the second signal, it is determined whether or not the user is located in the overlapping area of the first area and the second area, and the user is located in the overlapping area. When it is determined that the device is to be used, an alarm signal including tag identification information for identifying the own device is transmitted to the communication terminal device, and at the same time.
The communication terminal device
When the alarm signal is received, (1) the operator is notified by at least one of voice and light that the user carrying the corresponding wireless tag device may pass through the doorway, or (2) An entrance / exit management system characterized in that it records that the corresponding user has passed through the entrance / exit. The wireless tag device
When both the first signal and the second signal are received within the predetermined reception scheduled time, it is determined that the corresponding user is located in the overlapping area, and the alarm signal is sent to the communication terminal device. The entrance / exit management system according to claim 1, which is transmitted. The first transmitter and the second transmitter
The first signal and the second signal are alternately transmitted for half a cycle in the same predetermined cycle.
The wireless tag device
When the first signal and the second signal are alternately received within the scheduled reception time while the time in which the time for one cycle has a predetermined time width is set as the scheduled reception time, the duplication. The entrance / exit management system according to claim 1 or 2, wherein it is determined that the corresponding user is located in the area, and the alarm signal is transmitted to the communication terminal device. The wireless tag device
When the first signal and the second signal are alternately and repeatedly received within the scheduled reception time corresponding to the plurality of cycles, it is determined that the corresponding user is located in the overlapping area, and the communication terminal is used. The entrance / exit management system according to claim 3, wherein the alarm signal is transmitted to the device. The entrance / exit management system according to any one of claims 1 to 4, wherein the first antenna and the second antenna are installed at different positions at the same angle. While using the third antenna installed at the third position different from the first position and the second position, the third signal including the third transmitter identification information corresponding to the own machine partially overlaps with the overlapping area. Further equipped with a third transmitter that transmits to the third area,
The first and second antennas are installed near the ceiling near the doorway, and the third antenna is installed near the floor of the doorway facility.
The third transmitter is
The third signal is transmitted by the transmission power that the third area does not reach the ceiling portion, and the third signal is transmitted.
The wireless tag device
When all of the first signal to the third signal are received within the predetermined reception scheduled time, the corresponding user is located in the area where all of the first area, the second area, and the third area overlap. The entrance / exit management system according to claim 1, wherein the alarm signal is transmitted to the communication terminal device. The first transmitter, the second transmitter, and the third transmitter
In addition to transmitting the first to third signals in a predetermined order,
The wireless tag device
The entry according to claim 6, wherein the alarm signal is transmitted to the communication terminal device when all of the first to third signals are received in the order of transmission of the first to third signals within the scheduled reception time. Exit management system. The wireless tag device
The entry / exit according to any one of claims 1 to 7, which has a triaxial coil antenna capable of receiving magnetic field components in all directions and receives the first to third signals by the triaxial coil antenna. Management system. The wireless tag device
The first transmission device identification information and the second transmission device identification information included in the received first signal and second signal are added to the alarm signal and transmitted to the communication terminal device.
The communication terminal device
When the alarm signal is received, the entrance / exit where the corresponding user is located is specified based on the first transmitter identification information and the second transmitter identification information added to the received alarm signal, and the identification is performed. The entrance / exit management system according to any one of claims 1 to 8, which records information about the entrance / exit that has been performed in association with the user as information about the entrance / exit that the user has passed through. When the user is a resident of a long-term care facility and the communication terminal device receives the alarm signal, the operator is notified that the resident of the long-term care facility may be going out without permission. The entrance / exit management system according to any one of claims 1 to 9. An entrance / exit management device that is carried by a user who uses various facilities located in a real space and manages the entrance / exit of the user to the facility.
(1) A first signal of the LF frequency band including the first transmitter identification information for identifying the own device is transmitted while using the first antenna installed at the first position near the entrance / exit of the facility. The LF frequency band including the second transmitter identification information for identifying the own device while using the transmitter and (2) the second antenna installed at the second position different from the first position near the entrance / exit. A second transmitting device that transmits a second signal to a second area near the entrance / exit that partially overlaps the first area, and a receiving means that receives the first signal and the second signal from each of the first signal and the second signal.
A determination means for determining whether or not the user is located in the overlapping area of the first area and the second area based on the reception status of the first signal and the second signal.
When it is determined by the determination means that the corresponding user is located in the overlapping area, an alarm signal including management device identification information for identifying the own device is transmitted to an external communication terminal device. (1) A transmission means for notifying the operator of the facility that there is a user who is about to enter or leave the facility, or (2) recording that the corresponding user has passed through the doorway.
An entrance / exit management device characterized by having. It is an entrance / exit management method that manages the entrance / exit of users to various facilities located in the real space.
(1) While using the first antenna installed at the first position near the entrance / exit of the facility, the first signal of the LF frequency band including the first transmitter identification information for identifying the own device is transmitted to the entrance / exit of the facility. Identification of the second transmitter for identifying the own device while using the first transmitter that transmits to the first area in the vicinity and (2) the second antenna installed at the second position different from the first position. The first signal and the second signal are transmitted from each of a second transmitter that transmits a second signal of the LF frequency band including information to a second area near the entrance / exit that partially overlaps with the first area. The first step to do and
A second step in which a wireless tag device carried by the user and having a receiving circuit for receiving signals in the LF frequency band receives the first signal and the second signal,
With the third step, the wireless tag device determines whether or not the user is located in the overlapping overlapping area of the first area and the second area based on the reception status of the first signal and the second signal. ,
In the third step, when it is determined that the user is located in the overlapping area, the wireless tag device sends an alarm signal including wireless tag device identification information for identifying the own device to the facility. The fourth step of transmitting to the communication terminal device that manages the entry / exit status of the user to the facility, which is used by the operator of
When the communication terminal device receives the alarm signal, (1) the operator may pass through the doorway by a user carrying the corresponding wireless tag device by at least one of voice and light. Or (2) the fifth step of recording that the corresponding user has passed through the doorway, and
An entrance / exit management method characterized by having.

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