JP3840463B2 - Suspicious person detection system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspicious person detection system, and more particularly to a suspicious person using a transceiver that induces an electric field based on information to be transmitted in an electric field transmission medium and detects the electric field induced in the electric field transmission medium to transmit and receive information. The present invention relates to a suspicious person detection system.
[0002]
[Prior art]
Although wearable computers are attracting attention due to the miniaturization and performance enhancement of portable terminals, FIG. 7 shows an example in which such wearable computers are used while being worn by humans. As shown in the figure, the wearable computer 7 is mounted on a person's arm, shoulder, torso, etc. via a transceiver 9 to transmit / receive data to / from each other, and is further provided on the wall or floor so that it can be touched by the tip of a limb. Communication is performed with a personal computer (PC) 8 provided outside via the transceivers 9a and 9b and the cables.
[0003]
The transceiver 9 used for data communication between the wearable computer 7 and between the wearable computer 7 and the PC 8 uses a signal detection technique based on an electro-optic technique using laser light and an electro-optic crystal. An electric field based on information to be transmitted is induced in a living body as an electric field transmission medium, and information is transmitted and received using the induced electric field.
[0004]
By the way, in recent years, for example, verification using an ID card carried by the user or input of a personal identification number has been widely used as a security mechanism for permitting entry into a site and a residence and entry into a room.
[0005]
The prior art document information related to this application includes the following.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-352298
[Problems to be solved by the invention]
However, in the security mechanism described above, the door is automatically unlocked when a person who has the authority to enter or enter the room collates by ID card or by entering a password. Therefore, there is a problem that even if a person who does not have the above authority can enter or enter the room if he / she continues to act after a person who is permitted to enter or enter the room.
[0008]
The present invention has been made in view of the above circumstances, and utilizes a transceiver that induces an electric field based on information to be transmitted in the electric field transmission medium and detects the electric field induced in the electric field transmission medium to transmit and receive information. Accordingly, an object of the present invention is to provide a suspicious person detection system capable of accurately detecting the entrance of a suspicious person into a site and a residence and entering a room.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention according to claim 1 uses a transceiver that induces an electric field based on information to be transmitted in an electric field transmission medium and transmits and receives information by detecting the induced electric field. A suspicious person detection system for detecting whether or not an intruder entering a predetermined area is a suspicious person, the first signal electrode having a spiral shape in an insulating film laid in the predetermined area; A predetermined signal is sent to the first signal via the electrode film and the first transceiver, while maintaining a predetermined interval so that the two signal electrodes do not cross each other. When the signal generating device transmitting to the electrode and the intruder's foot are stepping on the first signal electrode and the second signal electrode of the electrode film, the electric field transmission medium is the intruder Living Communication between the first and second signal electrodes is established via the second signal electrode, the predetermined signal is received from the second signal electrode via the second transceiver, and the first of the electrode film The intruder who is stepping on the first signal electrode and the second signal electrode carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver. And a suspicious person determination device that receives the identification information, and the suspicious person determination device detects a suspicious person based on whether or not the identification information is received.
[0010]
In the invention according to claim 1, when the intruder's foot is stepping on the spiral first signal electrode and the spiral second signal electrode of the electrode film, the intruder's electric field transmission medium Since communication between the first and second transceivers via the living body is established, a predetermined signal transmitted from the signal generator is output to the suspicious person determination device. Thereby, the suspicious person determination apparatus can grasp | ascertain that there exists an intruder on an electrode film. An intruder who steps on the first signal electrode and the second signal electrode of the electrode film carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver. In such a case, the suspicious person determination device receives the identification information in addition to the predetermined signal. Thereby, the suspicious person determination device can detect whether or not the intruder is a suspicious person based on whether or not the identification information is received.
[0011]
According to the present invention, an intrusion that intrudes into a predetermined area using a transceiver that induces an electric field based on information to be transmitted in an electric field transmission medium and detects the induced electric field to transmit and receive information. A suspicious person detection system for detecting whether or not a person is a suspicious person, wherein a comb-shaped first signal electrode and a comb-shaped second signal electrode are provided in an insulating film laid in the predetermined region. A predetermined signal is transmitted to the first signal electrode via the electrode film disposed opposite to each other while maintaining a predetermined interval so that the signal electrodes do not cross each other, and the first transceiver When the signal generating device and the intruder's foot are stepping on the first signal electrode and the second signal electrode of the electrode film, the first signal electrode and the second signal electrode of the electrode film are passed through the living body of the intruder as the electric field transmission medium. 1 and Communication between the second signal electrodes is established, the predetermined signal is received from the second signal electrode via the second transceiver, and the first signal electrode and the first signal of the electrode film are received. If the intruder who is stepping on the second signal electrode carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver, the identification information The suspicious person determination device detects a suspicious person based on whether or not the identification information is received.
[0012]
In the invention of claim 2, when the intruder's foot is stepping on the comb-shaped first signal electrode and the comb-shaped second signal electrode of the electrode film, the living body of the intruder as the electric field transmission medium is Since communication between the first and second transceivers is established, a predetermined signal transmitted from the signal generator is output to the suspicious person determination device. Thereby, the suspicious person determination apparatus can grasp | ascertain that there exists an intruder on an electrode film. An intruder who steps on the first signal electrode and the second signal electrode of the electrode film carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver. In such a case, the suspicious person determination device receives the identification information in addition to the predetermined signal. Thereby, the suspicious person determination device can detect whether or not the intruder is a suspicious person based on whether or not the identification information is received. In addition, since the first and second signal electrodes are formed in a comb shape and are opposed to each other, the first and second signal electrodes can be used even when the electrode film is cut, and an electrode film having a size and a shape suitable for the application can be easily used. Can be created.
[0013]
The gist of the present invention described in claim 3 is that, in the invention described in claim 1 or 2, the electrode film uses a flexible insulating film.
[0014]
In the invention described in claim 3, since the electrode film uses a flexible insulating film, it can be wound up and stored when unnecessary. Thereby, it becomes possible to lay an electrode film in a required place when needed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is a schematic configuration diagram of a suspicious person detection system 100 according to an embodiment of the present invention. The suspicious person detection system 100 includes a signal generation device 10, a suspicious person determination device 20, and an electrode film 3, and the suspicious person determination device 20 enters based on reception of a predetermined signal transmitted from the signal generation device 10. This is a system for confirming the presence of the person 30 on the electrode film 3 and determining whether the intruder 30 is permitted to pass or a suspicious person based on whether or not the ID information is received. In addition, the intruder 30 in this Embodiment means all the persons who pass on the electrode film 3, and is the meaning including not only a suspicious person but the person who permitted passage.
[0017]
The signal generator 10 transmits a predetermined signal (for example, a simple signal such as a rectangular wave) to the signal input electrode 4 to be described later periodically (for example, every 0.1 second) via the transceiver 9a and the transceiver 9a. The signal generator 1 is provided.
[0018]
Here, the transceiver 9a and the transceivers 9b and 9c, which will be described later, will be described in detail in detail as shown in FIG. In this case, when transmission data from the signal generator 1) is received via the input / output (I / O) circuit 901, this transmission data is supplied to the transmission / reception electrode 903 via the transmission unit 902, and the transmission / reception electrode 903 and An electric field is induced in the electric field transmission medium (in this embodiment, the signal input electrode 4 and the signal output electrode 5 and the intruder 30 in this embodiment) through the insulating film 904, and this electric field is applied to other parts of the electric field transmission medium. To communicate. In addition, the electric field induced and transmitted by the electric field transmission medium is detected by the transmission / reception electrode 903 via the insulating film 904, and this electric field is coupled to the electric field detection optical unit 905 and converted into an electric signal. . The electric signal is subjected to signal processing such as amplification and noise removal by the signal processing circuit 906, and further subjected to waveform shaping by the waveform shaping circuit 907, and then the computer (through the input / output (I / O) circuit 901). In the present embodiment, the information is output to a suspicious person determination device 2) described later.
[0019]
The electrode film 3 is, for example, a signal input for transmitting a predetermined signal transmitted from the signal generator 10 into an insulating film 6 having a small thickness placed in a place where a suspicious person is detected such as an entrance and a corridor. A signal output electrode 5 for transmitting a predetermined signal to the electrode 4 and the suspicious person determination device 20 is incorporated. FIG. 3A is a view of the electrode film 3 as viewed from above. The signal input electrode 4 and the signal output electrode 5 maintain a distance d1 (for example, about 20 cm on the basis of the size of a human foot). However, they are arranged in a spiral shape, and the two electrodes are not physically connected. FIG. 3B is a cross-sectional view in the A direction in FIG. 3A and shows a state in which two electrodes are embedded in the insulating film 6 with the above-mentioned distance d1. .
[0020]
With such an arrangement of the signal input electrode 4 and the signal output electrode 5, when the intruder 30 walks on the electrode film 3, the intruder's foot steps on the signal input electrode 4 and the signal output electrode 5 at the same time. Become. FIG. 4 is a diagram for explaining a communication path established on the electrode film 3 through the foot of the intruder 30. According to FIG. 4A, since the intruder 30 does not step on the signal input electrode 4 or the signal output electrode 5, the predetermined signal flowing through the signal input electrode 4 Not transmitted to. Next, according to FIG. 4B, the foot of the intruder 30 steps on the signal input electrode 4 but does not step on the signal output electrode 5 (not completely on the electrode film 3). State), a predetermined signal flowing through the signal input electrode 4 is not transmitted to the signal output electrode 5 as in FIG.
[0021]
On the other hand, according to FIG. 4C, the intruder 30 is stepping on both the signal input electrode 4 and the signal output electrode 5 (the intruder 30 is placed on the electrode film 3). State), a communication path through the living body of the intruder 30 that is an electric field transmission medium is established between the signal input electrode 4 and the signal output electrode 5, and a predetermined signal flowing through the input electrode 4 is transmitted to the signal output electrode 5. Is done. The feet of the intruder 30 are not in direct contact with both electrodes, but the insulating film 6 is thin (at most, several μm to several mm). Is a communication path in which an electric field is induced. Therefore, when the intruder 30 is placed on the electrode film 30, a predetermined signal is output to the suspicious person determination device 20 via the signal output electrode 5.
[0022]
The suspicious person determination device 20 is connected to the signal output electrode 5, and when the intruder 30 is placed on the electrode film 3, the suspicious person determination receives a predetermined signal via the transceiver 9b. A container 2 is provided.
[0023]
A person who is permitted to pass through the electrode film 3 wears the transceiver 9c and an ID transmitter 7 that transmits ID information via the transceiver 9c. Thereby, when the person wearing the ID transmitter 7 and the transceiver 9c passes on the electrode film 3, in addition to the predetermined signal described above, the ID information is passed through the living body and the signal output electrode 5, Since the information is output to the suspicious person determination device 20, the suspicious person determination device 2 can determine whether or not the intruder 30 is a suspicious person depending on whether or not the ID information is received.
[0024]
Next, the operation of the suspicious person detection system 100 according to the present embodiment will be described with reference to FIG. Here, FIG. 5 is a sequence diagram illustrating communication exchange between the signal generator 1 and the suspicious person determination device 2.
[0025]
Since the signal generator 1 periodically transmits a predetermined signal (for example, every 0.1 second), when the intruder 30 passes over the electrode film 3, that is, the signal input electrode 4 and the signal output electrode 5 When both are touched, the suspicious person determination device 2 receives a predetermined signal via the transceiver 9b (steps S110 to S130).
[0026]
In this state, when the suspicious person determination device 2 does not receive the ID information, the intruder 30 is determined to be a suspicious person (steps S140 and S150). On the other hand, when the suspicious person determination device 2 receives the ID information, the intruder 30 is determined to be a person who is permitted to pass on the electrode film 3 (steps S140 and S160).
[0027]
Therefore, according to the suspicious person detection system 100 of the present embodiment, the transceiver 9 that induces an electric field based on information to be transmitted in the electric field transmission medium and detects the electric field induced in the electric field transmission medium to transmit and receive information. By using, it is possible to accurately detect that a suspicious person enters the installed electrode film 3, so that the suspicious person's entrance to the premises and residence and entry into the room are surely excluded. be able to.
[0028]
While the embodiments of the present invention have been described above, various modifications and changes can be made to the embodiments of the present invention without departing from the spirit of the present invention. For example, in the suspicious person detection system 100 of the above embodiment, the electrode film 3 in which two electrodes are arranged in a spiral shape is used. However, as shown in FIG. The electrode films 13 arranged to face each other so as to maintain a predetermined distance (similar to the above-described embodiment, for example, about 20 cm based on the size of a person's foot) may be used. In this case, since it can be used as an electrode film even if it is appropriately cut to the required length from the characteristics of the shape of the electrode, it can be used after being processed into a shape and size suitable for the application.
[0029]
Further, the two electrodes may be taken out by using the alligator clip 11 and connected to the transceivers 9a and 9b. The electrode films 3 and 13 may be soft insulating films, and may be wound and stored when unnecessary as shown in FIG. 6 (b). Thereby, since the electrode films 3 and 13 are excellent in mobility, it can be set as the suspicious person detection system which can be easily installed in a required place when needed.
[0030]
【The invention's effect】
As described above, according to the suspicious person detection system of the present invention, a transceiver that induces an electric field based on information to be transmitted in the electric field transmission medium and detects the electric field induced in the electric field transmission medium to transmit and receive information. By using, it is possible to accurately detect the entry of a suspicious person on the laid electrode film, so that the entry of the suspicious person into the premises and residences and the entry into the room must be excluded. Can do.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a suspicious person detection system according to an embodiment of the present invention.
FIG. 2 is a configuration of a transceiver used in the suspicious person detection system according to the embodiment of the present invention.
FIG. 3 is a diagram for explaining an electrode film of the suspicious person detection system according to the embodiment of the present invention.
FIG. 4 is a diagram illustrating a positional relationship between an intruder's foot and an electrode in the embodiment of the present invention.
FIG. 5 is a diagram for explaining the operation of the intruder detection system according to the embodiment of the present invention.
FIG. 6 is a diagram illustrating a comb-shaped electrode film.
FIG. 7 is an explanatory diagram showing an example in which a wearable computer is worn on a person via a transceiver and used.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Signal generator 2 Suspicious person determination device 3,13 Electrode film 4 Signal input electrode 5 Signal output electrode 6 Insulating film 7 Wearable computer, ID transmitter 8 PC
9, 9a, 9b, 9c Transceiver 10 Signal generator 11 Alligator clip 20 Suspicious person judgment device 30 Intruder 100 Suspicious person detection system 901 I / O circuit 902 Transmitter 903 Transmitter / receiver electrode 904 Insulating film 905 Electric field detection optical unit 906 Signal Processing circuit 907 Waveform shaping circuit 910 Receiver

Claims (3)

Whether or not an intruder entering a predetermined area is a suspicious person by using a transceiver that induces an electric field based on information to be transmitted in the electric field transmission medium and detects the induced electric field to transmit and receive information. A suspicious person detection system for detecting
The spiral first signal electrode and the spiral second signal electrode are arranged in the insulating film laid in the predetermined region while maintaining a predetermined interval so that the two signal electrodes do not cross each other. An electrode film,
A signal generator for transmitting a predetermined signal to the first signal electrode via the first transceiver;
When the intruder's foot is stepping on the first signal electrode and the second signal electrode of the electrode film, the first and second are passed through the intruder's living body as the electric field transmission medium. Communication between the two signal electrodes is established, the predetermined signal is received from the second signal electrode via the second transceiver, and the first signal electrode and the second signal of the electrode film are received. If the intruder who is stepping on the electrode carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver, the identification information is received. A suspicious person determination device;
Have
The suspicious person determination device detects a suspicious person based on whether or not the identification information is received. Whether or not an intruder entering a predetermined area is a suspicious person by using a transceiver that induces an electric field based on information to be transmitted in the electric field transmission medium and detects the induced electric field to transmit and receive information. A suspicious person detection system for detecting
The comb-shaped first signal electrode and the comb-shaped second signal electrode are arranged in the insulating film laid in the predetermined region so as to face each other while maintaining a predetermined interval so that the two signal electrodes do not cross each other. An electrode film,
A signal generator for transmitting a predetermined signal to the first signal electrode via the first transceiver;
When the intruder's foot is stepping on the first signal electrode and the second signal electrode of the electrode film, the first and second are passed through the intruder's living body as the electric field transmission medium. Communication between the two signal electrodes is established, the predetermined signal is received from the second signal electrode via the second transceiver, and the first signal electrode and the second signal of the electrode film are received. If the intruder who is stepping on the electrode carries the third transceiver and a transmitter that transmits his / her identification information via the third transceiver, the identification information is received. A suspicious person determination device;
Have
The suspicious person detection system detects a suspicious person based on whether or not the identification information is received. The suspicious person detection system according to claim 1 or 2, wherein the electrode film uses a flexible insulating film.

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