JPH1010228A - Passerby identifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passerby identifying apparatus for effectively supplying power from an antenna unit to a transponder. SOLUTION: The passerby identifying apparatus comprises a loop-like antenna unit 4 installed at a floor 3 side of a passage 10 to generate a magnetic field M for supplying necessary power to a transponder 2 and receiving an identification signal from the transponder 2, and the transponder 2 having a loop antenna mounted at a passerby's lower leg fitting to receive the power from the unit 4 and to transmit the previously stored signal. The unit 4 is installed so that the field M of a direction along the passage 10 or a direction perpendicular to the floor 3 of the passage 10 is formed over a passage width. The transponder 2 is set in its mounting direction so that, when a passerby travels on the unit 4 along the passage 10, a loop surface of the loop antenna is in a direction crossing perpendicularly to the direction of the field M of the unit 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedestrian identification device used in a nursing home, a nursing home, or the like for the purpose of automatically detecting the entrance of a person into or out of a building or room.

[0002]

2. Description of the Related Art Conventionally, as an identification device for managing livestock on a ranch or the like, Japanese Patent Application Laid-Open No. Sho 64-30526 discloses a small-sized identification device in which the identification signal set for each animal is stored in the body of each animal. A transponder is embedded, and an interrogation radio wave transmitted from the transceiver is transmitted to the transponder via a repeater attached to the body surface of the livestock, for example, an ear, and the transponder transmits the identification signal according to the interrogation radio wave. There is known a configuration in which the location of an individual livestock can be confirmed by causing the transmission and reception by the transceiver.

[0003] In a nursing home, a nursing home, and the like, since a demented elderly person may go outside without permission, it is extremely difficult to manage the location of residents.
If a resident goes out without permission at night or the like, an unexpected accident may occur.

[0004] Therefore, applying the technical concept of the above-mentioned livestock identification device, for example, a transmission / reception antenna device is installed at an appropriate place in a passage facing an entrance of a nursing home or the like,
When each resident has a transponder which has a built-in small transmitting and receiving loop antenna and stores an identification signal for each resident, and the resident tries to go out through the passage without permission, the antenna device Power is supplied to the loop antenna of the transponder by the magnetic field generated, and the transponder transmits an identification signal by this power, and by receiving the identification signal by the antenna device, the outgoing situation of the resident or the outgoing resident It is conceivable to configure so that the name can be detected.

[0005]

However, for example, in a situation where the antenna device is installed on the floor, if the resident carries the transponder on the upper body, the distance between the transponder and the antenna device increases. As a result, the magnetic field applied to the transponder from the antenna device is weakened, making it difficult to supply sufficient power. As a result, the strength of the identification signal from the transponder is weakened, and erroneous detection may occur. Further, even if the distance between the transponder and the antenna device is sufficiently small, if the loop surface of the loop antenna of the transponder is parallel to the magnetic field of the antenna device, the power supply from the antenna device to the transponder becomes small, It is difficult to detect the identification signal from the computer.

[0006] In the above, it is conceivable to increase the output of the antenna device. However, there is a possibility that peripheral devices (for example, a pacemaker of a passer-by or a mobile phone) may be adversely affected, and the output cannot be increased unnecessarily. . It is also conceivable to restrict the passage area of the passage according to the magnetic field of the antenna device, but this is not preferable because it impairs the passage.

Further, when the transponder is carried by the demented elderly person or the like, if the transponder is carried in a prominent position, the transponder may be unintentionally removed, and in this case, the detection becomes impossible at all.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a passer-by identification device capable of reliably supplying power from an antenna device to a transponder. Therefore, the passerby identification device according to claim 1 is installed on the floor side of the passage, generates a magnetic field for supplying necessary power to the transponder, and receives an identification signal from the transponder. And a transponder having a loop antenna attached to a passer's lower leg attachment, receiving power from the antenna device, and transmitting a pre-stored identification signal,
The antenna device is installed such that a magnetic field in a direction along the passage or in a direction perpendicular to the floor of the passage is formed over the passage width, and the transponder is provided so that a pedestrian can follow the passage along the passage. The mounting direction is set so that the loop surface of the loop antenna is perpendicular to the direction of the magnetic field of the antenna device when traveling on the antenna device.

In such a configuration, the loop-shaped antenna device is installed on the floor of a passage facing a pedestrian identification position, such as an entrance to a nursing home. The antenna device is energized at predetermined time intervals to generate a magnetic field near the floor of the passage.

When a passerby, such as a resident of the nursing home, attempts to pass over the antenna device, the loop antenna of the transponder attached to the lower leg attachment of the passerby, for example, footwear, etc. A magnetic field penetrates, and an electromotive force is generated in this loop antenna by a mutual induction action. As a result, power is supplied from the antenna device to the transponder.

The transponder transmits an identification signal stored in advance by the supplied power, and causes the antenna device to receive the identification signal. The above-mentioned antenna device alternately repeats the energized state and the non-energized state, and can receive signals in the non-energized state. The antenna device can be connected to a detection device, which detects the passing situation of the pedestrian and the name of the pedestrian based on the identification signal transmitted from the transponder and received by the antenna device. And
If necessary, an alarm sound is generated.

According to the above configuration, the antenna device is installed on the floor surface and the transponder is attached to the lower leg attachment of the passerby, so that the distance between the transponder and the antenna device can be sufficiently reduced, and the antenna device can be provided. Generates a magnetic field over the width of the passage, so that when a passerby passes over the antenna device, the passerby always passes over the magnetic field. As a result, the detection of the passage of a pedestrian is performed reliably.

According to a second aspect of the present invention, in the configuration of the first aspect, the lower leg attachment is footwear, the transponder is a sheet member, and the loop surface of the loop antenna is the footwear. Are provided along the tread surface.

In this case, the transponder is attached to footwear as a thin sheet-like member.
The demented elderly person and the like become unaware of the presence of the transponder, and the demented elderly person and the like are less likely to remove the transponder by themselves.

Further, since the loop surface of the loop antenna in the transponder is made to follow the tread surface of the footwear, if a passerby passes over the antenna device, for example, the passerby can move in the direction of the pass regardless of the pass direction. Even when the antenna device passes over the antenna device in an oblique direction, the magnetic field of the antenna device penetrates the loop surface of the loop antenna almost vertically, and as a result, the generation of the identification signal from the transponder is also ensured. As a result, the detection of the traffic situation can be performed more reliably.

According to a third aspect of the present invention, in the configuration of the second aspect, the transponder is incorporated in a bottom portion of the footwear or an insole inserted into the footwear, and the loop antenna is provided in the bottom portion or the insole. It is provided along the outer periphery of the insole.

Here, since the transponder is incorporated in the bottom or insole of the shoe, the transponder can be easily attached to the shoe. Further, since the loop antenna in the transponder is provided along the bottom of the footwear or along the outer periphery of the insole, the diameter of the loop antenna can be made sufficiently large, and as a result,
Even if the magnetic field generated by the antenna device is relatively weak, sufficient power can be supplied to the transponder, and the strength of the identification signal generated by the transponder also increases.
Since the size of the peripheral device (such as a pacemaker carried by a passerby) can be made sufficiently large without adversely affecting the device, even if the output of the antenna device is made smaller, the passerby can be accurately identified. Will be possible.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment relates to a pedestrian identification device that detects when a resident tries to go outside in a nursing home or the like.
As shown in the figure, a shoe 1 (footwear) which is a resident's lower leg attachment
And an antenna device 4 installed on the floor 3.

The bottom of the shoe 1 is a thin sheet-shaped member which is attached to the sole 5 on which the heel portion 5a is integrally provided and which is in contact with the sole of the shoe 1 inside the shoe 1. The bottom 6 is provided here, and the midsole 6 is provided also as the transponder 2. That is, as shown in FIGS. 3 and 4, the loop antenna 7 and the main body 8 constituting the transponder 2 are embedded in the midsole 6. The number of turns of the loop antenna 7 can be, for example, about several tens, and the loop surface is set in a direction along the tread surface of the shoe 1. Although not specifically shown, the main body 8 stores a read-only or rewritable storage element for storing an identification signal for each occupant, and electric power supplied from the antenna device 4 to the loop antenna 7 as necessary. , A temporary storage element is built-in.

The antenna device 4 is formed in a loop shape by a metal wire or the like. The antenna device 4 is installed on the floor 3 of a passage 10 facing a door 9 of an entrance of a nursing home or the like, and a flexible mat 11 is laid on the antenna device 4. Both ends of the antenna device 4 are connected to a power supply / detection device 12 having a power supply and a detection device built therein.
As shown in FIG. 5, the power supply / detection device 12 intermittently supplies power to the antenna device 4 at predetermined time intervals. In each transmission section I where power is supplied, a concentric circle is formed around the antenna device 4. In each reception section II in which the energization is stopped while generating a magnetic field (lines of magnetic force) M, the transponder 2
When the antenna device 4 receives the identification signal from the antenna device 4, this is detected.

As is apparent from FIG. 2, the magnetic field M is:
In a space that is concentrically generated in a vertical plane along the traveling direction B of the passage 10 and in a space separated to some extent back and forth from the antenna device 4, it faces a direction A that is substantially perpendicular to the floor surface 3 while being above the antenna device 4 In the vicinity, it faces the traveling direction B along the passage 10. The range of the magnetic field M depends on the voltage applied to the antenna device 4, but is generally 70 cm above the antenna device 4.
To a certain height and completely cover the range of movement of the shoe 1. The antenna device 4 extends in the width direction of the passage 10 so that the magnetic field M spreads over the entire width direction of the passage 10.

In the above configuration, when the resident tries to go outside, the resident's shoes 1 pass over the antenna device 4. During this passage, in the transmission section I, as shown in FIGS. 1 and 2, a magnetic field M is generated around the antenna device 4, and the magnetic field M directed in a direction A substantially perpendicular to the floor 3 is generated in the shoe 1. The power is supplied from the antenna device 4 to the transponder 2 by passing through the loop antenna 7 of the transponder 2. This electric power is stored in the power storage element in the main body 8 as needed.

After that, when switching to the receiving section II, the identification signal stored in the storage element of the main body 8 is changed by the power of the antenna device 4 stored in the storage element as shown in FIG. Magnetic field N by loop antenna 7
, Which is transmitted by the antenna device 4, converted into an electric signal, and sent to the power / sensing device 12. Based on the identification signal, the power / cumulative detection device 12 detects that the resident intends to go out, and detects the resident's name, emits an alarm sound or the like, if necessary, and incorporates or separately. The outgoing situation of the resident is stored together with the time in the storage device provided.

In the above configuration, the transponder 2 is
, The distance between the transponder 2 and the antenna device 4 is sufficiently small to such an extent that the magnetic fields M and N can reach the receiving side, respectively. Since the antenna device 4 is installed so as to reach the loop antenna, an electromotive force is reliably generated in the loop antenna 7 by the magnetic field M, and power supply from the antenna device 4 to the loop antenna 7 is reliably performed.

Since the loop surface of the loop antenna 7 is parallel to the tread surface of the shoe 1, the resident can
Regardless of the passing direction when passing above, that is, even when the resident crosses the antenna device 4 obliquely with respect to the direction of the passage 10, the magnetic field M in the direction of the arrow A always causes the loop antenna 7 to pass. It is penetrated perpendicularly to the loop surface, and as a result, the identification of the pedestrian becomes more reliable. In addition, since the transponder 2 is embedded in the midsole 6 of the shoe 1, a problem that the resident removes or abandons the transponder 2 hardly occurs.

Next, a second embodiment will be described with reference to FIGS. Here, a loop antenna 7 is provided along the outer periphery of the midsole 6. Thereby, the sensitivity of the loop antenna 7 to the magnetic field M from the antenna device 4 can be improved by increasing the diameter of the loop antenna 7, and the strength of the identification signal transmitted from the loop antenna 7 to the antenna device 4 can be reduced by a peripheral device or the like. Can be made sufficiently large as long as it does not adversely affect the surface.

In the above-described embodiment, the loop antenna 7 and the main body 8 are buried in the insole 6 and the insole 6 is also used as the transponder 2. It is also possible to embed the transponder 2 composed of the antenna 7 and the main body 8 or to sandwich the loop antenna 7 and the main body 8 between the shoe sole 5 and the midsole 6. Further, the loop antenna 7 and the main body 8 may be embedded in an insole (not shown) separate from the shoe 1, and the insole may be inserted into the shoe 1 and used. Furthermore, the transponder 2 of the present invention can be used by attaching it to footwear other than the shoes 1, for example, sandals or slippers, or attaching it to the hem of pants.

Further, in each of the above embodiments, the case where the main passerby identification device is installed at the entrance of a building such as a nursing home has been described, but the main passerby identification device faces the outdoor gate of various buildings. The installation location can be arbitrarily selected, such as being installed in a passage, at the entrance of a room in a building, or at a boundary position between a traversable area and a restricted area in a building. In addition, transponders 2 on both the left and right footwear and the trousers
Is attached, there is an advantage that even if the detection of the identification signal fails on one foot side, the detection can be performed once again on the other foot side, so that the detection accuracy is further improved.

[0029]

As described above, the pedestrian identification apparatus of the present invention is installed on the floor side of a passage, generates a magnetic field for supplying necessary power to the transponder, and outputs an identification signal from the transponder. A loop-shaped antenna device for receiving, and a transponder attached to a passer's lower leg attachment, having a loop antenna for receiving power from the antenna device and transmitting a pre-stored identification signal, The device is installed such that a magnetic field in a direction along the path or perpendicular to the floor of the path is formed over the width of the path, and the transponder is adapted to allow a pedestrian to move along the path along the path. Mounting direction such that the loop surface of the loop antenna is in a direction perpendicular to the direction of the magnetic field of the antenna device when traveling on the antenna device Since it is set, the distance between the transponder and the antenna device can be made sufficiently small, and the antenna device generates a magnetic field over the width of the passage, so that when a pedestrian passes over the antenna device, Always pass over the magnetic field, and as a result, the detection of the passage of a pedestrian is ensured.

[0030] If the lower leg attachment is footwear, and the transponder is a sheet-like member, and the loop surface of the loop antenna is provided along the tread surface of the footwear, a demented elderly person or the like may be used. Even when the device is used, the elderly person or the like becomes unaware of the presence of the transponder, and the trouble of removing the transponder by itself is less likely to occur.

Further, since the loop surface of the loop antenna in the transponder is made to follow the tread surface of the footwear, if a passerby passes over the antenna device, for example, the passerby may move in the passage direction regardless of the pass direction. Even when the antenna device passes over the antenna device in an oblique direction, the magnetic field of the antenna device penetrates the loop surface of the loop antenna almost vertically, and as a result, the generation of the identification signal from the transponder is also ensured. As a result, the detection of the traffic situation can be performed more reliably.

If the transponder is incorporated in the bottom of the footwear or an insole inserted into the footwear, and the loop antenna is provided along the outer periphery of the bottom or the insole, the transponder is attached to the footwear. Can be easily performed, and the diameter of the loop antenna can be made sufficiently large. As a result, even if the magnetic field generated by the antenna device is relatively weak, sufficient power can be supplied to the transponder, In addition, the strength of the identification signal generated by the transponder can be made sufficiently large within a range that does not adversely affect peripheral devices (such as a pacemaker carried by a passerby). In addition, it is possible to accurately identify passers-by.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a passer-by identification device according to an embodiment of the present invention.

FIG. 2 is a schematic side view showing a state in which the antenna device supplies power to a transponder in the embodiment.

FIG. 3 is a schematic side view showing a state where the transponder transmits an identification signal to an antenna device.

FIG. 4 is a schematic perspective view of a shoe provided with the transponder.

FIG. 5 is a time chart showing switching between transmission and reception of the antenna device.

FIG. 6 is a schematic side view showing a state where the transponder transmits an identification signal.

FIG. 7 is a schematic plan view showing a transponder of a passer-by identification device according to another embodiment of the present invention.

FIG. 8 is a schematic side view showing the transponder.

FIG. 9 is a schematic perspective view of a shoe to which the transponder is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shoes (footwear) 2 Transponder 3 Floor 4 Antenna device 7 Loop antenna 10 Passage

Claims (3)

[Claims] 1. A loop-shaped antenna device installed on the floor side of a passage for generating a magnetic field for supplying necessary power to a transponder and receiving an identification signal from the transponder, A transponder having a loop antenna that receives power from the antenna device and transmits a pre-stored identification signal, wherein the antenna device has a direction along the passage or a floor surface of the passage. The transponder is installed so that a magnetic field in a direction perpendicular to the path is formed over the width of the passage, and the transponder moves the loop surface of the loop antenna when a passerby travels on the antenna device along the passage. A pedestrian identification device, wherein the mounting direction is set so as to be perpendicular to the direction of the magnetic field of the antenna device. 2. The footwear according to claim 1, wherein the lower leg attachment is footwear, and the transponder is a sheet-like member, and a loop surface of the loop antenna is provided along a tread surface of the footwear. Passenger identification device. 3. The method according to claim 1, wherein the transponder is incorporated into a bottom of the footwear or an insole inserted into the footwear, and the loop antenna is provided along an outer periphery of the bottom or the insole. 2. The passer-by identification device according to 2.