JPH09128663A - System and method for preventing burglar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable specifying the place of a burglar evasion object which is stolen or left behind with a simple configuration. SOLUTION: A radio communication equipment 2 transmitting its own station terminal identifying number with a prescribed timing according to the communication format of a simple portable telephone system, is mounted to the burglar evasion object. The located place of the radio communication equipment 2 is managed based on the terminal identifying number which is received from the radio communication equipment 2 and the base station identifying number of a base station device which receives the terminal identifying number so as to control the located place of the burglar evasion object.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Technical Field to which the Invention pertains Related Art Problems to be Solved by the Invention Means for Solving the Problems Embodiments of the Invention (FIGS. 1 to 5) Effects of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft system and an antitheft method, and is suitable for application to an antitheft system for preventing theft by mounting a wireless communication device on an antitheft object. is there.

[0003]

2. Description of the Related Art Conventionally, it is difficult for a user to steal, such as a bag or cash (hereinafter, this is referred to as an antitheft object).
Various anti-theft systems have been proposed to protect the car from theft. As an anti-theft system, there is an anti-theft system that includes, for example, a calling card that transmits a predetermined radio wave and a receiving card that receives a radio wave from the calling card and sounds a buzzer when the radio wave cannot be received. In this anti-theft system, a calling card is attached to the anti-theft object, and the receiving card is held by the user. When the theft-prevention target attached with the calling card is separated from the user due to theft or misplacement, the receiving card sounds a buzzer as a clue that radio waves from the calling card are no longer received. As a result, the user can recognize that the theft avoidance target has left the user, and that the theft avoidance target has been stolen or misplaced.

In addition to this, in a museum or the like, a similar calling card is attached to a work of art, and an alarm is sounded when radio waves from the calling card cannot be received due to theft or the like. There is also an anti-theft system.

[0005]

By the way, in the antitheft system as described above, it is possible to detect theft or misplacement by utilizing the fact that the radio wave is no longer received, but up to the whereabouts of theft or misplacement. If you don't understand it, there are some inconveniences.

The present invention has been made in consideration of the above points, and proposes a theft prevention system and a theft prevention method thereof with a simple structure capable of specifying the whereabouts of an antitheft object that has been stolen or misplaced. It is what

[0007]

In order to solve such a problem, according to the present invention, a wireless communication device for transmitting a terminal identification number of its own station at a predetermined timing is stolen in conformity with a communication format of a simplified mobile phone system. Attached to the avoidance target, the terminal identification number received from the wireless communication device,
Based on the base station identification number of the base station device that has received the terminal identification number, the location of the wireless communication device is managed to manage the location of the theft avoidance target. By doing so, even if the theft avoidance target object should be stolen, the whereabouts of the theft avoidance target object can be easily known.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an antitheft system according to the present invention as a whole, which is broadly divided into a small radio communication device 2 and a radio communication device 2 to be attached to an antitheft object.
Base station device 3 and exchange 4 for transmitting and receiving radio waves to and from
A public line network 5 composed of A and 4B, and a control station device 6 for controlling the base station device 3 via the public line network 5 or for managing the information transmitted from the base station device 3. Is configured.

In the case of this embodiment, the radio communication device 2 has a PH
It is based on S (Personal Handyphone System), which is an air interface of a so-called simple mobile phone system, and transmits and receives to and from the base station device 3 by a PHS communication format. The base station device 3 and the control station device 6 are existing communication systems (hereinafter referred to as P
(Referred to as HS communication system) and is not newly provided for the wireless communication device 2.

The wireless communication device 2 periodically or randomly transmits a radio wave to send out predetermined information. The base station device 3 receives the radio wave and sends the obtained information from the wireless communication device 2 to the control station device 6. The control station device 6 manages the position of the wireless communication device 2 based on the information sent from the base station device 3. In this case, the control station device 6 not only manages the current position of the wireless communication device 2, but also accumulates past information as a database and can manage the past position. In this way, the wireless communication device 2 registers the position in the PHS communication system by transmitting radio waves at a predetermined timing. That is, the wireless communication device 2 performs position registration in the PHS communication system according to the same control procedure as that of a normal PHS terminal device.

The wireless communication device 2 as described above is attached to a theft avoidance target such as a bag or cash which is difficult to be stolen. If the theft avoidance object to which the wireless communication device 2 is attached is stolen, the user inquires the operator of the control station device 6 by telephone. The operator teaches the user the position information of the wireless communication device 2 managed by the control station device 6. This position information allows the user to know where the stolen item is now. In addition, by analyzing the position information, the user can know what route the stolen subject moves through, and can also estimate in which direction the past route will move. Further, if the user requests the operator, it is possible to send a calling signal from the base station device to call the wireless communication device 2, and when searching for the wireless communication device 2, it is possible to facilitate the search by the calling sound. .

The radio communication device 2 will be specifically described below. The wireless communication device 2 is provided with a control unit 7 including, for example, a microcomputer, and the control unit 7 controls the entire operation. The memory 8 is composed of a ROM that stores the program code of the control unit 7 and an EEPROM that stores various information such as an identification number of the wireless communication device 2 (hereinafter referred to as PSID). There is.

When transmitting a radio wave to perform position registration, the control unit 7 first reads the PSID from the memory 8 and gives it to the signal processing unit 9 to instruct the signal processing unit 9 to send out a position registration signal. . In response to this, the signal processing unit 9 sends out a position registration signal, and therefore, the TDMA (Time Division Multiple Access) compliant with the PHS signal format.
) / TDD (Time Division Duplex) signal slot is generated, and a transmission signal including the position registration signal is generated and sent to the modulator 10. The transmission signal generated at this time includes the above-mentioned PSID.

The modulation unit 10 receives the transmission signals received from the signal processing unit 9 and QPSK (Quadrature Phase Shift Key).
ing) Modulate and send to the RF unit 11. The RF unit 11 forms a high frequency circuit, frequency-converts the transmission signal supplied from the modulation unit 10 into a signal in the 1.9 [GHz] band that is the frequency band of PHS, and transmits the signal via the antenna 12.

On the other hand, when receiving a response signal (so-called ACK signal) or a call signal transmitted from the base station device 3, the reception signal received by the antenna 12 is input to the RF unit 11. The RF unit 11 frequency-converts the received signal to generate an intermediate frequency signal, and sends this to the demodulation unit 13. The demodulation unit 13 demodulates the QPSK-modulated intermediate frequency signal and sends it to the signal processing unit 9. The signal processor 9 includes a demodulator 13
The demodulated signal supplied from the device is processed, the received signal is analyzed, and the analysis result is sent to the control unit 7. Control unit 7
If the received signal is an ACK signal, the process ends as it is, and if the received signal is a call signal, the buzzer 14
To ring the ringtone. It should be noted that each of these electric circuits is operated by being supplied with power from a battery 15 incorporated in the wireless communication device 2.

FIG. 2 shows a control sequence when the location registration is performed between the wireless communication device 2 and the base station device 3 having such a configuration. As shown in FIG. 2, the wireless communication device (PS) 2 first sends a control signal, which is a location registration request, to the base station device (CS) 3, and subsequently sends a PSID, which is the identification number of its own station. To do. Receiving this, the base station device 3 sends back a response signal (that is, an ACK signal) indicating that the base station device 3 has successfully received. As a result, the wireless communication device 2 can know that the information necessary for location registration has been successfully transmitted.

The base station device 3 that has received these pieces of information sends a control signal, which is a position registration request, to the control station device (GC) 6, and subsequently, the PSI obtained from the wireless communication device 2.
D and CSID which is the identification number of the own station are transmitted. Upon receiving this, the control station device 6 has an AC indicating that it has successfully received the signal.
Send back the K signal. As a result, the base station device 2 can know that the information necessary for location registration has been successfully transmitted. The control station device 6 that has received these pieces of information manages which base station device 3 the wireless communication device 2 is located on the basis of the PSID and CSID, and stores the resulting position information as a database from the past to the present. accumulate. This makes it possible to read the position information of the wireless communication device 2 from the database and inform the position of the wireless communication device 2 even when the user makes an inquiry in the case of theft.

FIG. 3 shows a control sequence when the wireless communication device 2 is called in case of theft or the like. First, the control station device 6 sends a control signal, which is a call request including the PSID of the wireless communication device 2 to be called, to the base station device 3 at the place where the wireless communication device 2 to be called is. Receiving this, the base station device 3 sends an ACK signal to the control station device 6 and also sends a control signal which is a call request including the PSID of the wireless communication device 2 to be called. Receiving this, the wireless communication device 2 recognizes that it has been called by the PSID, sends an ACK signal to the base station device 3, and causes the buzzer 14 to ring and ring a ringing tone. As a result, the thief can be prevented from being stolen by letting the thief steal the surprised object. Further, even when the object is left behind or lost, the ringing sound can be used as a clue to easily find the object to be stolen.

In the above-mentioned configuration, in the case of this embodiment, a small radio communication device 2 for transmitting and receiving by the communication format of PHS is formed and is attached to the theft avoidance object which is difficult to be stolen. For example, as shown in FIG. 4, in the case of an important bag, the wireless communication device 2 is kept in the bottom of the bag or the like. Further, for example, as shown in FIG. 5, in the case of cash, the wireless communication device 2 is attached by making it look like a member for bundling the cash. By doing so, the wireless communication device 2 periodically or randomly transmits radio waves to perform position registration in the PHS communication system. Thus, even if the device is stolen or misplaced, it is possible to know the whereabouts of the theft avoidance object by inquiring the control station device 6. Further, since the control station device 6 accumulates position information from the past to the present as a database, whether the anti-theft object is moving, or in what direction it is moving next, using the database. You can guess what happened at any time.

Thus, in the case of this embodiment, P
By using the location registration function of the HS communication system, the location of the theft avoidance target can be specified with a simple configuration. It is also possible to use the location registration function of a normal cellular phone system, a so-called mobile phone system, to identify the location of the theft avoidance target, but in that case, the service area of the base station device is as wide as several kilometers. Therefore, it becomes difficult to specify the whereabouts. However, if the location registration function of the PHS communication system is used as in this embodiment, the service area of the base station device 3 is 100
Since it is narrow at around meters, it is easy to identify the location. Incidentally, even when a mobile phone system whose location is difficult to specify is used, a flexible antitheft system can be constructed by combining with a PHS communication system.

According to the above structure, the small PHS communication device 2 for communicating with the PHS communication format is formed and attached to the theft-prevention target, so that the existing PHS communication system can be used. The location of the theft avoidance target can be specified. Thus, with a simple configuration, it is possible to realize a theft prevention system capable of specifying the whereabouts of the theft avoidance object that has been stolen or left behind.

In the above embodiment, the existing PH
The case where the S communication system (3, 6) is used has been described, but the present invention is not limited to this, and a base station device and a control station device may be separately provided for the antitheft system.

Further, in the above-described embodiment, the case where the user inquires the operator of the control station device 6 by telephone and asks the whereabouts in words from the operator when the theft or misplacement has been dealt with has been described. The location information may be obtained by data communication by accessing the control station device 6 using a computer, facsimile, electronic notebook, or the like. Further, in this case, the position information and the map information may be combined to provide a service that indicates the whereabouts of the theft avoidance target on the map.

Further, in the above-mentioned embodiment, the case where the wireless communication device 2 is simply called when the device is stolen or misplaced is described, but the present invention is not limited to this, and the wireless communication device is provided with a sound collecting means such as a microphone. It may be provided so that surrounding sounds can be picked up and heard. By doing so, it becomes easier to search for the theft avoidance object by relying on the sound.

In the above embodiment, the case where the wireless communication device 2 is simply called when the device is stolen or misplaced has been described, but the present invention is not limited to this, and the wireless communication device is provided with pseudo voice generating means. You may also make a pseudo voice such as "I was treated to theft. Please contact the nearest police box." In short, when called,
If the notifying means for notifying it is provided, the same effect as the above case can be obtained.

Further, in the above-mentioned embodiment, simply PH
The case where the wireless communication device 2 that communicates in the S communication format is formed has been described, but the present invention is not limited to this, and the wireless communication device is provided with GPS (Global Positioning System) receiving means to obtain the obtained position information. You may make it transmit to a base station apparatus. By doing so, the location can be specified more accurately.

Further, in the above-mentioned embodiment, the case where the whereabouts of a person who has been just stolen is known can be known. However, the present invention is not limited to this, and the radio wave from the radio communication device 2 is received and a predetermined signal is received. If the user has a reception card that will sound an alarm when radio waves cannot be received for longer than the time, the user will be notified by sounding an alarm when the card is stolen or misplaced. You can

[0029]

As described above, according to the present invention, the wireless communication device for transmitting the terminal identification number of its own station at a predetermined timing in accordance with the communication format of the simplified portable telephone system is attached to the theft avoidance object. The location of the wireless communication device is managed based on the terminal identification number received from the wireless communication device and the base station identification number of the base station device receiving the terminal identification number. By managing the position, it is possible to easily realize a theft prevention system that can specify the whereabouts of the theft avoidance object that has been stolen or misplaced with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an anti-theft system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a control sequence at the time of position registration.

FIG. 3 is a schematic diagram showing a control sequence at the time of calling.

FIG. 4 is a schematic diagram showing a state in which the wireless communication device is attached to the bag.

FIG. 5 is a schematic diagram showing a state in which a wireless communication device is attached to a banknote bundle.

[Explanation of symbols]

1 ... Anti-theft system, 2 ... Wireless communication device, 3 ...
Base station device, 4A, 4B ... Exchange, 5 ... Public network, 6 ... Control station device, 7 ... Control unit, 8 ... Memory,
9 ... Signal processing section, 10 ... Modulation section, 11 ... RF section,
12 ... antenna, 13 ... demodulation section, 14 ... buzzer,
15 ... Batteries.

Claims (4)

[Claims] 1. A wireless communication device which is attached to an object to be stolen and which transmits a terminal identification number of its own station at a predetermined timing in accordance with a communication format of a simplified mobile phone system, and a wireless communication device which is transmitted from the wireless communication device. A base station device that receives the terminal identification number and outputs the base station identification number of its own station together with the terminal identification number, and the wireless communication based on the terminal identification number and the base station identification number output from the base station device. An anti-theft system, comprising: a control station device that manages the location of the device to manage the location of the theft avoidance target. 2. The antitheft system according to claim 1, wherein the base station device and the control station device are a base station device and a control station device that construct an existing simple mobile phone system. 3. The wireless communication device receives a calling signal transmitted from the base station device,
The antitheft system according to claim 1, further comprising an informing means for informing that the call has been made. 4. A wireless communication device for transmitting a terminal identification number of its own station at a predetermined timing in accordance with a communication format of a simplified mobile phone system is mounted on an object to be stolen and received from the wireless communication device. The location of the wireless communication device is managed based on the identified terminal identification number and the base station identification number of the base station device that has received the identification number, and the location of the theft avoidance target is managed. And the anti-theft method.