JPH1011561A - Passerby identification device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passerby identification device which can surely supply the electric power to a transponder from an antenna device. SOLUTION: This device consists of a loop antenna device 5 which is placed on the surface of a passage to generate a magnetic field to supply the electric power to a transponder 2 and also to receive an identification signal from the transponder 2, and the transponder 2 which is attached at the heel part of footwear 1 of a passerby and has a loop antenna 3 that receives the electric power from the device 5 and transmits the identification signal stored previously. The device 5 is placed in such a way to form the magnetic field generated along the passage over the passage width. The transponder 2 is attached in such a direction where the loop surface of the antenna 3 crosses vertically the direction of the magnetic field of the device 5 when the passerby passes on the device 5.

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]

According to the present invention, a loop surface of a loop antenna in a transponder can block a magnetic field of an antenna device even if a pedestrian is unaware.
An object of the present invention is to provide a passerby 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 attached to a heel portion of footwear of a passerby and having a loop antenna that receives power from the antenna device and transmits a pre-stored identification signal, wherein the antenna device is provided in the passage. Along with the magnetic field generated along the width of the passage,
The transponder is characterized in that, when a pedestrian moves on the antenna device, the mounting direction is set so that the loop surface of the loop antenna is in a direction perpendicular to the direction of the magnetic field of the antenna device. Is what you do.

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 tries to pass over the antenna device, the magnetic field of the antenna device passes through the loop antenna of the transponder attached to the heel of the footwear of the passerby. An electromotive force is generated in this loop antenna by mutual induction. 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, since the antenna device is installed on the floor and the transponder is attached to the heel of the footwear of the passer-by, the distance between the transponder and the antenna device can be sufficiently reduced, and Since the device generates a magnetic field over the width of the passage, when a pedestrian passes over the antenna device, it always passes over the magnetic field. As a result, the detection of the passage of a pedestrian is reliably performed.

According to a second aspect of the present invention, in the configuration of the first aspect, the transponder is embedded in a heel portion of the footwear with a normal to a loop surface of the loop antenna being a longitudinal direction of the footwear. It is assumed that.

Here, the transponder is embedded within the heel thickness of the footwear by matching the normal of the loop surface of the transponder with the longitudinal direction of the footwear, so that the footwear and the transponder can be integrated. It is less likely that a pedestrian unconsciously removes the transponder, making detection impossible.

According to a third aspect of the present invention, in the configuration of the first aspect, the transponder is attached to a heel of the footwear such that a direction of a loop surface of the loop antenna coincides with a tread direction of the footwear. It is characterized by the following. In addition, in this specification, the heel part of a shoe is a part other than the part in contact with the floor surface at the rear of the sole,
Including side walls at the rear end of the shoe that do not contact the floor,
In the configuration of the third aspect, the loop antenna is preferably incorporated in the side wall of the rear end of the shoe.

In the third aspect, since the loop surface of the loop antenna is made to coincide with the tread direction of the footwear, regardless of the traveling direction when a pedestrian passes over the antenna device, for example,
Even when a pedestrian crosses the antenna device obliquely with respect to the direction of the passage, the magnetic field generated by the antenna device penetrates the loop surface vertically, and as a result, the detection of the pedestrian is further improved. It will be done reliably.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. This embodiment relates to a passerby identification device for detecting when a resident tries to go outside in a nursing home or the like, and includes a transponder 2 and an antenna device 5. As shown in FIG. 4, the transponder 2 is embedded in the heel of a shoe 1 (footwear), which is a lower leg attachment of each resident. The transponder 2 has a loop antenna 3 and a main body 4 connected to the loop antenna 3.
Although not specifically shown, a read-only or rewritable storage element that stores an identification signal for each resident and power supplied from the antenna device 5 to the loop antenna 3 to be described later are used as needed. , And a temporary storage element. The direction of the normal to the loop surface of the loop antenna 3 (the center line of the loop antenna 3) is the longitudinal direction of the shoe 1.

As shown in FIGS. 1 and 2, the antenna device 5 is formed in a loop shape by a metal wire or the like.
The antenna device 5 is provided at a door 6 of an entrance of a nursing home or the like.
A flexible mat 9 is placed on the floor 8 of the passage 7 facing the antenna device 5. Both ends of the antenna device 5 are connected to a power / sensing device 11 having a built-in power source and a detecting device. As shown in FIG. 5, the power supply / detection device 11 intermittently supplies power to the antenna device 5 at predetermined time intervals. In each transmission section I where power is supplied, a concentric circle is formed around the antenna device 5. Each reception section II in which a magnetic field (line of magnetic force) M is generated while energization is stopped
In the above, when the identification signal from the transponder 2 is received by the antenna device 5, this is detected.

As is clear 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 7 and in a space separated to some extent back and forth from the antenna device 5, it faces in a direction A that is substantially perpendicular to the floor surface 8, while above the antenna device 5. In the vicinity, it faces the traveling direction B along the passage 7. The range of the magnetic field M depends on the voltage applied to the antenna device 5, but usually reaches a height of about 70 cm above the antenna device 5 and completely covers the moving range of the shoe 1. In addition, the antenna device 5 extends over the entire width of the passage 7 so that the magnetic field M is distributed over the entire width of the passage 7.

In the above configuration, when the resident tries to go outside, the resident's shoes 1 pass over the antenna device 5. During this passage, in the transmission section I, a magnetic field M is generated around the antenna device 5 as shown in FIGS. 1 and 2, and the magnetic field M directed in the traveling direction B of the passage 7 is transmitted to the transponder 2 in the shoe 1. , The power is supplied from the antenna device 5 to the transponder 2. This electric power is stored in the electric storage element in the main body 4 as needed.

After that, when switching to the reception section II, the identification signal stored in the storage element of the main body 4 is changed by the power of the antenna device 5 stored in the storage element as shown in FIG. Magnetic field N by loop antenna 3
The signal is transmitted by the antenna device 5, is converted into an electric signal, and is sent to the power / sensing device 11. Based on the identification signal, the power / cumulative detection device 11 detects that the resident is going out and detects the resident's name, emits an alarm sound or the like as 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 connected to the shoe 1
, So that the distance between the transponder 2 and the antenna device 5 is sufficiently reduced to such an extent that the magnetic fields M and N can reach the receiving side, respectively, and the magnetic field M extends over the entire width of the passage 7 in the width direction. Since the antenna device 5 is installed in the loop antenna 3, an electromotive force is reliably generated in the loop antenna 3 by the magnetic field M, and power supply from the antenna device 5 to the loop antenna 3 is reliably performed. Further, since the magnetic field M directed in the traveling direction B of the passage 7 is orthogonal to the loop surface of the loop antenna 3, the power supply from the antenna device 5 to the loop antenna 3 is ensured also from this point. Also, transponder 2
Is embedded in the shoe 1, so that there is little problem that the resident removes or abandons the transponder 2.

FIG. 6 shows a second embodiment of the present invention.
Here, the transponder 2 is vertically embedded in the heel of the shoe 1, more specifically on the side wall at the rear end of the shoe 1. The direction of the loop surface of the loop antenna 3 in the transponder 2 matches the tread direction of the shoe 1. As shown in FIG. 7, when the shoe 1 passes over the antenna device 5, the component of the magnetic field M generated by the antenna device 5 in the vertical direction A penetrates the loop antenna 3 of the transponder 2 so as to be orthogonal to the loop surface. I do.

As a result, an electromotive force is generated in the loop antenna 3, and thereafter, the identification signal stored in the main body 4 is transmitted to the antenna device 5 by the loop antenna 3 as described above. Here, since the normal to the loop surface of the loop antenna 3 is substantially vertical,
Regardless of the passing direction, the magnetic field M penetrates the loop antenna 3 perpendicularly to the loop plane even when a pedestrian crosses the antenna device 5 obliquely to the direction of the passage. In addition, the detection of a pedestrian is more reliably performed. In each of the drawings of the first and second embodiments, the transponder 2, which should be originally indicated by a dotted line, is indicated by a solid line for convenience so as to be easily recognized. The transponder 2 can be embedded in any part of the shoe 1 such as a toe.

In each of the above-described embodiments, a case has been exemplified in which the passerby identification device is installed at the entrance of a building such as a nursing home. However, the 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, the transponders 2 and 12 can be attached to a hem portion of pants other than various types of footwear. In addition, footwear on both the left and right,
If the transponders 2 and 12 are attached to both the left and right hem of the pants, respectively, even if the identification signal detection fails on one foot side, it can be detected once again on the other foot side. Is further improved.

[0026]

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. Attached to the heel part of the footwear of the passerby and the loop antenna device to receive,
A transponder having a loop antenna for receiving an electric power from the antenna device and transmitting a pre-stored identification signal, wherein the antenna device forms a magnetic field generated along the passage over a passage width. And the transponder is mounted so that, when a pedestrian advances on the antenna device, the mounting direction is such that the loop surface of the loop antenna is perpendicular to the direction of the magnetic field of the antenna device. 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, In this case, the vehicle always passes over the magnetic field, and as a result, the detection of the passage of the pedestrian is reliably performed.

If the transponder is embedded in the heel of the footwear with the normal of the loop surface of the loop antenna being the longitudinal direction of the footwear, the footwear and the transponder can be integrated, and the transponder can remove the transponder. Unintentional removal makes it less likely that a problem that detection becomes impossible will occur.

If the transponder is mounted on the heel portion of the footwear such that the direction of the loop surface of the loop antenna coincides with the direction of the tread surface of the footwear, the transponder can move in a traveling direction when a passerby passes over the antenna device. Regardless, for example, even when a pedestrian crosses the antenna device obliquely to the direction of the passage, the magnetic field generated by the antenna device penetrates vertically through the loop surface, and as a result, Detection is more reliably performed.

[Brief description of the drawings]

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

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

FIG. 3 is a schematic side view showing a state in which a transponder transmits an identification signal to an antenna device in the first embodiment.

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

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

FIG. 6 is a schematic perspective view showing a shoe provided with a transponder of the passer-by identification device according to the second embodiment of the present invention.

FIG. 7 is a schematic side view showing a state in which a transponder transmits an identification signal to an antenna device in the second embodiment.

[Explanation of symbols]

 Reference Signs List 1 shoes (footwear) 2 transponder 3 loop antenna 5 antenna device 7 passage 8 floor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshimasa Nakamura 1-46 Wakihama Kaigandori, Chuo-ku, Kobe City, Hyogo Prefecture Inside Nabco Kobe Factory

Claims (3)

[Claims] 1. A loop-shaped antenna device that is installed on the floor side of a passage and generates a magnetic field that supplies necessary power to a transponder, and receives an identification signal from the transponder, and a heel of footwear of a passerby. A transponder having a loop antenna attached to the unit and receiving a power from the antenna device and transmitting a pre-stored identification signal, wherein the antenna device has a magnetic field generated along the passage. While being installed so as to be formed over the width, the transponder has a direction in which a loop surface of the loop antenna intersects perpendicularly with a direction of a magnetic field of the antenna device when a pedestrian advances on the antenna device. A pedestrian identification device, wherein the mounting direction is set so as to be as follows. 2. A pre-Symbol transponder passerby identifying apparatus according to claim 1, characterized in that embedded in the heel portion of the footwear normals loop plane of the loop antenna as the longitudinal direction of the footwear. 3. The passerby identification device according to claim 1, wherein the transponder is attached to a heel portion of the footwear such that a direction of a loop surface of the loop antenna matches a tread direction of the footwear.