JP2015125770A - Antitheft system, antitheft method, antitheft program, and antitheft device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antitheft system configured to accurately detect a detection signal which should be essentially detected from an alarm device and to issue an alarm from the alarm device, an antitheft method, an antitheft program, and an antitheft device.SOLUTION: An antitheft system 100 includes: an alarm device 2 which has identification information storage means, identification information transmission means, and alarm means. An antitheft device 1 includes: communication search means which searches for the alarm device and detects the alarm device on receipt of identification information transmitted from the identification information transmission means; communication connection means which connects to communicate with the alarm device 2 when the identification information coincides with identification information stored in advance; alarm instruction transmission means which transmits an alarm instruction to the alarm device 2; and disconnection means which disconnects the communication with the alarm device 2. When the disconnection means disconnects the communication with the alarm device, the communication connection means connects to communicate with another alarm device.

Description

  The present invention relates to an anti-theft system, an anti-theft method, an anti-theft program, and an anti-theft device for preventing theft of articles and the like.

Conventionally, various anti-theft systems for preventing theft have been used (see, for example, Patent Document 1). As these antitheft systems, there are known systems equipped with a tag attached to an article and an alarm gate provided at a store entrance.
As a communication method between these tags and the alarm gate, an acoustic magnetic method (acoustic magnetic method), a radio wave method, a magnetic method, and the like are known.
In such an anti-theft system, when a tag is arranged near an alarm gate, the alarm gate detects a detection signal from the tag and issues an alarm.

JP 2005-063322 A

However, according to the anti-theft system as described above, not only a proper detection signal from the tag but also various noises from the environment are detected as detection signals, and the alarm gate malfunctions. .
In addition, although it is conceivable to prevent theft by using RFID or the like, there is a problem that an apparatus generally becomes large with RFID.

  The present invention has been made to solve such a problem, and can detect a detection signal from an alarm device to be detected with high accuracy and issue an alarm from the alarm device. An object of the present invention is to provide an anti-theft system, an anti-theft method, an anti-theft program, and an anti-theft device that can facilitate downsizing.

In order to solve the above problems, the present invention provides the following means.
The present invention is an anti-theft system comprising an alarm device attached to an article and an anti-theft device for communicating with the alarm device by Bluetooth (registered trademark) system to prevent the theft of the article, Sent from the identification information storage means for storing the identification information for identifying itself, the identification information transmission means for transmitting the identification information stored in the identification information storage means, and the alarm instruction transmission means of the antitheft device A communication search for detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmitting means. If the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, the alarm device A communication connection means for communication connection to a device, an alarm instruction transmission means for transmitting the alarm instruction to the alarm device when the communication connection means is connected to the alarm device, and an alarm instruction transmission means for transmitting the alarm instruction. A connection disconnecting means for disconnecting the communication connection with the alarm device, and the communication connection means detects the other connection detected by the communication search means when the connection disconnecting means disconnects the communication connection with the alarm device. When the identification information of the alarm device matches the pre-stored identification information, the communication device is connected to the other alarm device.

In this invention, the identification information transmission means transmits the identification information stored for identifying itself by the identification information storage means of the alarm device to the anti-theft device. Then, when the communication connection means of the antitheft device receives the identification information, it communicates and connects to the alarm device when the identification information matches the previously stored identification information. Then, the alarm instruction transmission means of the antitheft device transmits an alarm instruction to the alarm device. Then, the alarm means of the alarm device receives the alarm instruction and issues an alarm. Then, the connection disconnection unit of the anti-theft device disconnects the communication connection with the alarm device when the alarm instruction transmission unit transmits the alarm instruction. Further, when the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit establishes communication connection with the other alarm device.
As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, communication connection to multiple alarm devices attached to those items The alarm device can be alerted one after another.

  Further, according to the present invention, the alarm device includes a measurement signal transmission unit that transmits a measurement signal for measuring the signal strength, and the antitheft device has a reception strength of the measurement signal transmitted by the measurement signal transmission unit. A determination means for determining whether or not a threshold value is exceeded, wherein the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, and the reception intensity is a threshold value; When the determination means determines that the number has exceeded, the communication connection means communicates with the alarm device, and the alarm instruction transmission means transmits the alarm instruction to the alarm device.

  According to this invention, when the determination means determines whether or not the received signal strength of the measurement signal transmitted from the alarm device exceeds a prestored threshold, and determines that the threshold is exceeded, the communication connection Since the means is connected to the alarm device, the alarm can be given priority to an alarm device that is likely to be illegally taken out.

  In addition, the present invention includes an article information transmission unit that transmits article information stored in advance when the alarm device receives an article information transmission instruction transmitted from the article information transmission instruction transmission unit of the anti-theft device, The anti-theft device includes an article information transmission instruction transmitting means for transmitting the article information transmission instruction to the alarm device when the communication connecting means is connected to the alarm device, and an article transmitted from the article information transmitting means. An article information receiving means for receiving information, and a display means for displaying the article information received by the article information receiving means.

  According to the present invention, it is possible to notify a store clerk of a corresponding article when an alarm is issued from the alarm device, and it is possible to easily find an illegal article.

  Further, in the present invention, when the determination unit determines that the connection disconnection unit does not exceed the threshold, the article information transmission instruction transmission unit transmits the article information transmission instruction, and the article information After the receiving means receives the article information, the alarm instruction transmitting means disconnects the communication connection with the alarm device without transmitting the alarm instruction.

According to this invention, when the determination means determines that the received signal strength does not exceed the threshold, the article information transmission instruction transmission means transmits the article information transmission instruction, and the article information reception means receives the article information, The connection disconnecting unit disconnects the communication connection without the instruction transmitting unit transmitting the alarm instruction.
Therefore, it is possible to acquire in advance the article information of the alarm device that is likely to be illegally taken out and is arranged in the communicable area of the anti-theft device.

  Further, the present invention provides an article information storage means for storing the article information transmitted from the article information transmitting means in association with the identification information of the alarm device detected by the communication search means. And when the communication connection means is connected to the alarm device, the article information storage means stores the article information in association with the identification information, and the connection disconnection means disconnects the communication connection with the alarm device. After that, the communication connection means, when the identification information of the alarm device detected by the communication search means matches the identification information associated with the article information stored in the article information storage means, No communication connection.

In this invention, when the communication connection means of the antitheft device is connected to the alarm device, the article information storage means of the antitheft device is associated with the identification information transmitted from the identification information transmitting means of the alarm device, and the alarm device The article information transmitted from the article information transmitting means is stored. Then, the connection disconnecting unit disconnects the communication connection with the alarm device. Then, when the identification information transmitted from the identification information transmission unit matches the identification information associated with the item information stored in the item information storage unit, the communication connection unit does not establish communication connection with the alarm device.
For this reason, it is possible to prevent redundant connection with an alarm device that has been connected once, thereby improving the efficiency of the system.

  Further, in the present invention, the determination unit determines that the identification information of the alarm device detected by the communication search unit matches the identification information stored in advance, and the reception intensity exceeds a threshold value. In this case, when the identification information of the alarm device detected by the communication search means coincides with the identification information stored in the article information storage means, the display means indicates that the article information transmission instruction transmission means uses the article information transmission instruction. The article information stored in the article information storage means and associated with the identification information is displayed without transmitting the message.

  According to this invention, it is possible to prevent duplicate transmission / reception of article information that has been acquired once, and to quickly display article information.

  The present invention also relates to an anti-theft method in an anti-theft system comprising an alarm device attached to an article and an anti-theft device that communicates with the alarm device by a Bluetooth (registered trademark) system to prevent the article from being stolen. The identification information storing step for the identification information storage means of the alarm device to store the identification information stored by the identification information transmission means of the alarm device and the communication search means of the antitheft device, The communication search step of detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmission means, and the communication connection means of the anti-theft device are detected in the communication search step. When the identification information of the alarm device is received and the identification information matches the identification information stored in advance, the alarm A communication connection step for communication connection to a device, and an alarm instruction transmission step for transmitting an alarm instruction to the alarm device when the alarm instruction transmission means of the anti-theft device is connected to the alarm device in the communication connection step; The alarm unit of the alarm device receives the alarm instruction transmitted in the alarm instruction transmission step and issues an alarm; and the disconnection unit of the antitheft device transmits the alarm instruction in the alarm instruction transmission step. Is transmitted, the connection disconnection step of disconnecting the communication connection with the alarm device, and the communication connection means of the anti-theft device, when the communication connection with the alarm device is disconnected in the connection disconnection step, When the identification information of the other alarm device detected by the communication search step matches the identification information stored in advance, Wherein the weight of the other communication connection step of communication connection to the distribution system.

As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, it communicates with multiple alarm devices attached to those items. It is possible to connect to each other, so that alarms can be issued to the alarm devices.

  The present invention is also an anti-theft program in an anti-theft system comprising an alarm device attached to an article and an anti-theft device that communicates with the alarm device by a Bluetooth (registered trademark) system and prevents the theft of the article. The identification information storing step for the identification information storage means of the alarm device to store the identification information stored by the identification information transmission means of the alarm device and the communication search means of the antitheft device, The communication search step of detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmission means, and the communication connection means of the anti-theft device are detected in the communication search step. When the identification information of the alarm device is received and the identification information matches the identification information stored in advance, A communication connection step for communication connection to an alarm device, and an alarm instruction transmission step for transmitting an alarm instruction to the alarm device when the alarm instruction transmission means of the antitheft device is connected to the alarm device in the communication connection step. An alarm step in which the alarm means of the alarm device receives the alarm instruction transmitted in the alarm instruction transmission step and issues an alarm; and a connection disconnection means of the antitheft device in the alarm instruction transmission step. When the instruction is transmitted, the connection disconnecting step for disconnecting the communication connection with the alarm device, and the communication connection means of the anti-theft device when the communication connection with the alarm device is disconnected in the connection disconnecting step, If the identification information of another alarm device detected by the communication search step matches the identification information stored in advance, Another communication connection step for communication connection to the other alarm device is executed in the antitheft system.

As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, it communicates with multiple alarm devices attached to those items. It is possible to connect to each other, so that alarms can be issued to the alarm devices.

  The present invention also relates to an anti-theft device for communicating with an alarm device attached to an article by a Bluetooth (registered trademark) system to prevent the theft of the article, and searching for the alarm device to identify the alarm device. Communication search means for detecting the alarm device by receiving the identification information stored in the storage means and transmitted from the identification information transmission means of the alarm device; and the identification information of the alarm device detected by the communication search means Is matched with the pre-stored identification information, the communication connection means for communication connection to the alarm device, and when the communication connection means is connected to the alarm device, the alarm device is transmitted an alarm instruction, An alarm instruction transmission means for issuing an alarm to the alarm means of the alarm device, and when the alarm instruction transmission means transmits an alarm instruction, communication connection with the alarm device is established. The communication connection means stores in advance the identification information of other alarm devices detected by the communication search means when the connection disconnection means disconnects the communication connection with the alarm device. If the identification information matches, the other alarm device is connected for communication.

As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, it communicates with multiple alarm devices attached to those items. It is possible to connect to each other, so that alarms can be issued to the alarm devices.

  The present invention also relates to an anti-theft method in an anti-theft device that communicates with an alarm device attached to an article by a Bluetooth (registered trademark) system and prevents the theft of the article, and a communication search means of the anti-theft device includes Searching for the alarm device and detecting the alarm device by receiving the identification information stored in the identification information storage means of the alarm device and transmitted from the identification information transmission means of the alarm device; and A communication connection step of communication connecting to the alarm device when the identification information of the alarm device detected in the communication search step matches the pre-stored identification information; and When the alarm instruction transmission means of the prevention device is communicatively connected to the alarm device in the communication connection step, An alarm instruction transmission step for transmitting an alarm instruction to issue an alarm from the reporting unit, and when the alarm instruction is transmitted in the alarm instruction transmission step, the connection disconnection means of the antitheft device establishes communication connection with the alarm device. The disconnection step of disconnecting, and the communication connection means of the anti-theft device disconnecting communication connection with the alarm device in the connection disconnection step, the identification information of the other alarm device detected by the communication search step Includes a communication connection step for communication connection to the other alarm device when the ID matches the pre-stored identification information.

As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, it communicates with multiple alarm devices attached to those items. It is possible to connect to each other, so that alarms can be issued to the alarm devices.

  The present invention also relates to an anti-theft program in an anti-theft device that communicates with an alarm device attached to an article by a Bluetooth (registered trademark) system and prevents the theft of the article, and a communication search means of the anti-theft apparatus includes Searching for the alarm device and detecting the alarm device by receiving the identification information stored in the identification information storage means of the alarm device and transmitted from the identification information transmission means of the alarm device; and A communication connection step of communication connecting to the alarm device when the identification information of the alarm device detected in the communication search step matches the pre-stored identification information; and When the alarm instruction transmission means of the prevention device is connected to the alarm device in the communication connection step, the alarm An alarm instruction transmission step for transmitting an alarm instruction to issue an alarm from an alarm unit of the device, and when the alarm instruction is transmitted in the alarm instruction transmission step, the connection disconnection means of the antitheft device communicates with the alarm device. When the communication disconnection step of disconnecting the connection and the communication connection means of the antitheft device disconnects the communication connection with the alarm device in the connection disconnection step, the other alarm device detected by the communication search step When the identification information matches the previously stored identification information, the anti-theft device is caused to execute another communication connection step for communication connection to the other alarm device.

As a result, when the identification information stored in the alarm device matches the identification information stored in advance, the communication connection means connects to the alarm device. Can be ignored, and a reliable communication connection can be established with the target alarm device. Therefore, a detection signal from an alarm device that should be detected can be detected with high accuracy, and an alarm can be issued from the alarm device.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID.
Further, after the communication connection means performs communication connection with the alarm device, the alarm instruction transmission means transmits the alarm instruction to the alarm device, the connection disconnection means disconnects the connection with the alarm device, and the communication connection means further includes: When the identification information of the other alarm device detected by the communication search unit matches the previously stored identification information, the communication connection unit communicates with the other alarm device immediately because the communication connection unit communicates with the other alarm device. Connection can be made. Therefore, even if multiple customers try to take out multiple items illegally, or one customer tries to take out multiple items illegally, it communicates with multiple alarm devices attached to those items. It is possible to connect to each other, so that alarms can be issued to the alarm devices.

  According to the present invention, a detection signal from an alarm device that should be detected can be detected with high accuracy, and not only can an alarm be issued from the alarm device, but also miniaturization can be facilitated. it can.

It is a whole block diagram which shows the antitheft system as 1st Embodiment of this invention. It is a functional block diagram which shows the antitheft device for gates of FIG. 1 for every function. It is a top view which shows the article | item tag of FIG. 1 typically. It is a functional block diagram which shows the article tag of FIG. 1 for every function. It is a functional block diagram which shows the portable antitheft device of FIG. 1 for every function. It is a functional block diagram which shows the anti-theft cash register apparatus of FIG. 1 for every function. It is a functional block diagram which shows the POS management apparatus of FIG. 1 for every function. It is a functional block diagram which shows the antitheft device for blind spots of FIG. 1 for every function. It is a functional block diagram which shows the article management apparatus of FIG. 1 for every function. It is explanatory drawing which shows an example at the time of applying a theft prevention system to an actual shop. It is a flowchart which shows operation | movement with an article tag and the antitheft device for gates. It is a flowchart which shows operation | movement with an article tag and a portable antitheft device. It is a flowchart following FIG. 12 which shows operation | movement with an article tag, a cash register antitheft device, and a POS management device. It is a flowchart following FIG. 13 which shows operation | movement with an article tag, a cash register antitheft device, and a POS management device. It is a flowchart which shows operation | movement with an article tag and a cash register antitheft device. It is a flowchart which shows operation | movement with an article tag and the antitheft device for blind spots.

(Embodiment 1)
The antitheft system according to the first embodiment of the present invention will be described below.
FIG. 1 is an overall configuration diagram showing an anti-theft system 100 as a first embodiment of the present invention.
The anti-theft system 100 is arranged in the vicinity of a gate anti-theft device (anti-theft device) 1 provided near a store entrance, an article tag (alarm device) 2 attached to an article, and the gate anti-theft device 1. The portable antitheft device 3 is provided.
Further, the anti-theft system 100 includes a cash register anti-theft device (the anti-theft device) 4 provided at a cash register, a POS management device 5 provided near the cash register, and a blind spot anti-theft device 6 provided in a blind spot of a store. And an article management device 7 provided in the backyard of the store.
The gate antitheft device 1, the article tag 2, the portable antitheft device 3, the cash register antitheft device 4, the POS management device 5, the blind spot antitheft device 6, and the article management device 7 are connected by wire or wirelessly. ing.

FIG. 2 is a functional block diagram showing the gate antitheft device 1 for each function.
The gate antitheft device 1 includes a control unit 10 that controls the entire device, a display unit (display unit) 11 that displays various information, an operation unit 12 that receives operations from a user, and a communication unit 13 that performs communication. And a storage unit (article information storage means) 14 for storing various information and a camera unit 15 for capturing images.
The display unit 11 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information and the like.
The operation unit 12 includes, for example, a keyboard, a mouse, a touch pad, or buttons, and inputs various information and instructions from the user.
The communication unit 13 communicates with the article tag 2, the article management device 7, and the like. For example, the communication unit 13 communicates with the article tag 2 by short-range wireless communication. As short-range wireless communication, for example, Bluetooth (registered trademark) or the like can be used, and in particular, Bluetooth (registered trademark) LE or the like can be used. CLASS uses, for example, CLASS2. Further, the communication unit 13 communicates with the article management device 7 through a wired or wireless LAN connection.
The storage unit 14 includes, for example, a hard disk, a memory, and the like, and stores various programs, work data, and the like in addition to the MAC address of the item tag 2, the item information, the RSSI value threshold, and the like.
The camera unit 15 is provided on the front and back surfaces of the gate antitheft device 1, and an image input from the rear camera is displayed on the front display unit 11.

The control unit 10 includes a main control unit (article information receiving unit, communication search unit) 10a, an identification information determination processing unit 10b that determines registration of the MAC address of the item tag 2, and an alarm that transmits an alarm instruction to the item tag 2. And an instruction transmission unit 10c.
In addition, the control unit 10 includes a communication connection processing unit (communication connection unit) 10d that performs communication connection using the article tag 2 and Bluetooth (registered trademark), and a communication disconnection processing unit (connection) that disconnects communication connection using Bluetooth (registered trademark). Cutting means) 10e.
The control unit 10 further includes a measurement signal determination processing unit (determination unit) 10f that determines the received signal strength of the measurement signal transmitted from the article tag 2, and article information that transmits an article information transmission instruction to the article tag 2. A transmission instruction transmission unit (article information transmission instruction transmission unit) 10g and an article information storage processing unit 10h that performs processing for storing article information are provided.

The main control unit 10a not only receives the item information transmitted from the item tag 2, but also performs a communication search to be described later and controls the entire control unit 10.
The identification information determination processing unit 10b determines whether or not the MAC address transmitted from the article tag 2 is already stored in the storage unit 14. Specifically, the identification information determination processing unit 10b is configured to store the MAC address transmitted from the article tag 2 in the storage unit 14 in advance for monitoring via the article management device 7 (monitoring identification information). And whether it coincides with the MAC address (identification information for duplication) stored in advance for duplication by the article information storage processing unit 10h (determination for duplication). Do.
The alarm instruction transmitting unit 10 (alarm instruction transmitting means) c transmits an alarm instruction to the article tag 2 and issues an alarm from the article tag 2.
The communication connection processing unit 10d performs communication connection by pairing with the article tag 2.
In the present embodiment, Bluetooth (registered trademark) LE first searches for a communication-compatible device by transmitting and receiving identification information such as a MAC address in an advertising packet, detects the communication-compatible device, and detects its presence. The communication search step for recognizing and the communication connection step for detecting communication-enabled devices and recognizing their existence through the communication search step and then performing communication connection by means of pairing, etc., enabling mutual transmission and reception of various requests. I do. Then, the communication search step is performed by the main control unit 10a, and the communication connection step is performed by the communication connection processing unit (communication connection unit) 10d. In the communication search step, it is possible to detect the partner device by receiving the identification information transmitted by broadcast from the partner device, and to detect a plurality of different devices by repeating this, and simultaneously recognize the presence thereof. On the other hand, in the communication connection step, in principle, one-to-one communication is performed by a pairing process.

The communication disconnection processing unit 10e disconnects the communication connection with the article tag 2 that is communication-connected in the communication connection step. Accordingly, the communication connection processing unit 10d can perform communication connection with the other article tag 2.
The measurement signal determination processing unit 10 f determines whether or not the received signal strength of the measurement signal transmitted from the article tag 2 exceeds a threshold value stored in advance in the storage unit 14.
In the present embodiment, an RSSI signal is used as the measurement signal, and an RSSI value is used as the received signal strength.
The article information transmission instruction transmitting unit 10 g transmits an article information transmission instruction to the article tag 2 in a state where the communication connection with the article tag 2 is performed.
The article information storage processing unit 10 h stores the article information transmitted from the article tag 2 in the storage unit 14.

FIG. 3 is a plan view schematically showing the article tag 2.
As shown in FIG. 3, the article tag 2 includes a rectangular parallelepiped casing 201.
In the housing 201, a speaker 202 that emits an alarm sound, a mid-infrared LED module 203, a battery 204 that supplies power, and a switch 205 that appears and disappears from the housing 201 are provided.
Also, in the housing 201, an LED lamp 206 that emits light when the article tag 2 is operated, a micro USB connection unit 207 that serves as an interface for connecting to an external device, and an attached cable connection unit for connecting an attached cable. 208, a flash memory 209 for storing article information and the like, and a communication module 210 for communicating with other devices.

The mid-infrared LED module 203 emits flashing mid-infrared light. In the present embodiment, mid-infrared light is used. However, the present invention is not limited to this, and for example, near-infrared light, far-infrared light, or the like may be used.
The switch 205 holds an alarm preparation state for issuing an alarm by being immersed in the casing 201 in a state where the article tag 2 is in operation. When the switch 205 protrudes from the housing 201 from this state, an alarm state is entered and the speaker 202 issues an alarm. That is, when the casing 201 is attached to an article or the like, the switch 205 is kept immersed, and when the casing 201 is illegally removed from the article or the like, the switch 205 protrudes and the speaker 202 issues an alarm.
The attached cable connecting portion 208 is connected to the attached cable when the housing 201 is attached to an article or the like with the attached cable. When the attached cable is removed illegally, the speaker 202 issues an alarm.
The communication module 210 includes Bluetooth (registered trademark) LE and has a plurality of profiles. As described above, CLASS2 is used.

FIG. 4 is a functional block diagram showing the article tag 2 for each function.
As shown in FIG. 4, the article tag 2 includes a control unit 20 that controls the entire apparatus, an operation unit (alarm request input unit) 22 that receives an operation, a communication unit 23 that communicates with other devices, A storage unit (identification information storage unit) 24 that stores article information, a MAC address, and the like, and an alarm unit (alarm unit) 26 that issues an alarm are provided.
The operation unit 22 accepts an alarm operation and inputs an alarm state hold, an alarm instruction, and the like, for example, like the switch 205 and the attached cable connection unit 208.
The communication unit 23 communicates with the gate antitheft device 1, the portable antitheft device 3, and the cash register antitheft device 4. Here, as described above, short-range wireless communication such as Bluetooth (registered trademark) LE is performed. In addition, the communication unit 23 communicates with the article management apparatus 7 by wired or wireless connection using USB or the like.
The storage unit 24 includes, for example, a hard disk and a memory, and stores various programs, work data, and the like in addition to the MAC address, article information, transmission output level, and the like of the gate antitheft device 1.
The alarm unit 26 emits an alarm sound or emits light. As an alarm, various reactions such as vibration and deformation as well as sound and light are possible.

The control unit 20 includes a main control unit (identification information transmission unit, measurement signal transmission unit) 20a, an identification information determination processing unit 20b that determines registration of the MAC address of the gate antitheft device 1, and a transmission output for communication. And a transmission output control unit (transmission output control means) 20c to be controlled.
In addition, the control unit 20 includes an article information transmission unit (article information transmission unit) 20d that transmits article information to the gate antitheft device 1, an alarm processing unit 20e that causes the alarm unit 26 to perform an alarm, and an alarm unit 26, an alarm stop processing unit 20 f that stops the alarm by 26, and a communication connection processing unit (communication connection unit) 20 g that performs communication connection by Bluetooth (registered trademark) with the gate antitheft device 1 and the like.

The main control unit 20a not only transmits identification information and measurement signals, but also controls the entire control unit 20.
The identification information determination processing unit 20b determines whether or not the MAC address transmitted from the gate antitheft device 1 or the like is already stored in the storage unit 24.
The transmission output control unit 20 c controls the transmission output level based on the transmission output level stored in the storage unit 24. For example, the transmission output level is prepared in a plurality of stages such as 0 to 16 or 0 to 8. The higher the numerical value of the transmission output level, the higher the transmission output, and 0 is a state where no transmission output is performed. The transmission output in the present embodiment is 0.2 mW at normal times and 1.2 mW at the time of communication connection with the gate antitheft device 1 or the like, and the abnormality detection by the switch 205 or the attached cable connection unit 208 is performed. Sometimes the maximum output is 2.5 mW. The communication distance when the transmission power is 0.2 mW is about 20 cm, the communication distance when the transmission power is 1.2 mW is about 5 m, and the communication distance when the transmission power is 2.5 mW is about 10 m. . Of course, this transmission output is merely an example, and it goes without saying that the numerical value can be appropriately changed.

The article information transmission unit 20d reads the article information stored in the storage unit 24 and transmits it to the gate antitheft device 1 or the like. The article information includes the article name and unit price. Note that the article information may be only the article name, or other information may be added in addition to the article name and unit price. For example, as other information, there is information such as the size, shape and color of a package, information on a display shelf or a display area, etc. that facilitates discovery of the article G at the time of theft.
The alarm processing unit 20e drives the alarm unit 26 and causes the alarm unit 26 to issue an alarm.
The alarm stop processing unit 20f performs an alarm stop process so that the alarm by the alarm unit 26 is not performed. For example, as the alarm stop process, the power of the entire article tag 2 can be turned off, or the transmission output can be made zero via the transmission output control unit 20c.
The communication connection processing unit 20g performs communication connection by pairing with the gate antitheft device 1 or the like. The communication search step described above is performed by the main control unit (communication search unit) 20a, and the communication connection step is performed by the communication connection processing unit 20g.

FIG. 5 is a functional block diagram showing the portable antitheft device 3 for each function.
The portable antitheft device 3 includes a control unit 30 that controls the entire device, a display unit 31 that displays various information, an operation unit 32 that receives operations from a user, and a communication unit 33 that performs communication. Yes.
The portable antitheft device 3 includes a storage unit 34 that stores various information, a camera unit 35 that captures an image, and an alarm unit 36 that issues an alarm.

The display unit 31 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information, images, and the like.
The operation unit 32 includes, for example, a keyboard, a mouse, a touch pad, or buttons, and inputs various information and instructions from the user.
The communication unit 33 communicates with the article tag 2. Here, as described above, short-range wireless communication such as Bluetooth (registered trademark) LE is performed. In addition, the communication unit 33 communicates with the article management apparatus 7 through a wired or wireless LAN connection.
The storage unit 34 includes, for example, a hard disk, a memory, and the like, and stores various programs, work data, and the like in addition to the MAC address of the article tag 2, the article information, and the RSSI value threshold.
The camera unit 35 is provided on the front and back surfaces of the portable antitheft device 3, and an image input from the rear camera is displayed on the front display unit 31.
The alarm unit 36 emits an alarm sound or emits light. As an alarm, various reactions such as vibration and deformation as well as sound and light are possible.

The control unit 30 includes a main control unit 30a, an identification information determination processing unit 30b that determines registration of the MAC address of the article tag 2, and a communication connection processing unit 30c that performs communication connection using the article tag 2 and Bluetooth (registered trademark). And a communication disconnection processing unit 30d for disconnecting the communication connection by Bluetooth (registered trademark).
The control unit 30 also includes an article information storage processing unit 30e that performs processing for storing article information, and a measurement signal determination processing unit (reception intensity measurement) that determines the received signal strength of the measurement signal transmitted from the article tag 2. Means) 30f and an alarm processing unit 30g for causing the alarm unit 36 to issue an alarm.
The control unit 30 includes an infrared image processing unit 30 h that performs infrared image processing on the image data, and an article information transmission instruction transmission unit 30 i that transmits an article information transmission instruction to the article tag 2.

The identification information determination processing unit 30b determines whether or not the MAC address transmitted from the article tag 2 is already stored in the storage unit 34 (determination for monitoring, determination for duplication).
The communication connection processing unit 30c performs communication connection with the article tag 2 by pairing. The communication search step described above is performed by the main control unit (communication search means) 30a, and the communication connection step is performed by the communication connection processing unit 30c.
The communication disconnection processing unit 30d disconnects the communication connection with the devices that are communication-connected in the communication connection step. As a result, the communication connection processing unit 30d can perform communication connection with other devices.
The article information storage processing unit 30 e stores the article information transmitted from the article tag 2 in the storage unit 34.
The measurement signal strength determination processing unit 30f measures the reception signal strength of the measurement signal transmitted from the article tag 2, and determines whether or not the threshold value stored in advance in the storage unit 34 is exceeded. As described above, an RSSI signal is used as the measurement signal, and an RSSI value is used as the received signal strength.
The alarm processing unit 30g drives the alarm unit 36 and causes the alarm unit 36 to issue an alarm. The alarm processing unit 30g changes the alarm according to the reception intensity of the measurement signal transmitted from the article tag 2. For example, the interval and size of the alarm are changed.
The infrared image processing unit 30h performs infrared image processing so that the image data input by the camera unit 35 can be seen under infrared rays.
The article information transmission instruction transmission unit 30 i transmits an article information transmission instruction to the article tag 2 in a state where the communication connection with the article tag 2 is performed.

FIG. 6 is a functional block diagram illustrating the cash register antitheft device 4 for each function.
The cash register antitheft device 4 includes a control unit 40 that controls the entire device, a display unit 41 that displays various information, an operation unit 42 that receives operations from a user, a communication unit 43 that performs communication, And a storage unit 44 for storing information.
The cash register antitheft device 4 includes a camera unit 45 that captures an image and an alarm unit 46 that issues an alarm.
The display unit 41 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information.
The operation unit 42 includes, for example, a keyboard, a mouse, a touch pad, or buttons, and inputs various information and instructions from the user.
The communication unit 43 communicates with the article tag 2. Here, as described above, short-range wireless communication such as Bluetooth (registered trademark) LE is performed. The communication unit 43 communicates with the POS management device 5 and the article management device 7 through a wired or wireless LAN connection. The cash register antitheft device 4 and the POS management device 5 may be directly connected by USB or the like.
The storage unit 44 includes, for example, a hard disk, a memory, and the like, and stores various programs, work data, and the like in addition to the MAC address of the article tag 2, the article information, and the RSSI value threshold.
The camera unit 45 is provided on the front and back of the cash register antitheft device 4, and an image input from the rear camera is displayed on the front display unit 41.
The alarm unit 46 emits an alarm sound or emits light. As an alarm, various reactions such as vibration and deformation as well as sound and light are possible. The alarm unit 46 changes the alarm according to the reception intensity of the measurement signal transmitted from the article tag 2. For example, the interval and size of the alarm are changed.

The control unit 40 includes a main control unit 40 a, an identification information determination processing unit 40 b that determines registration of the MAC address of the article tag 2, and an alarm instruction transmission unit 40 c that transmits an alarm instruction to the article tag 2.
In addition, the control unit 40 includes a communication connection processing unit 40d that performs communication connection using the article tag 2 and Bluetooth (registered trademark), and a communication disconnection processing unit 40e that disconnects communication connection using Bluetooth (registered trademark).
Furthermore, the control unit 40 transmits an article information transmission instruction to the measurement signal determination processing unit (reception intensity measuring unit) 40f that determines the received signal strength of the measurement signal transmitted from the article tag 2 and the article tag 2. An article information transmission instruction transmission unit 40g and an article information storage processing unit 40h that performs processing for storing article information are provided.
The control unit 40 also includes an accounting processing unit 40i that performs accounting processing, an alarm processing unit 40j that causes the alarm unit 46 to issue an alarm, and an infrared image processing unit 40k that performs infrared image processing on the image data.

The identification information determination processing unit 40 b determines whether or not the MAC address transmitted from the article tag 2 is already stored in the storage unit 44. Specifically, as described above, the identification information determination processing unit 40b performs monitoring determination and duplication determination.
The alarm instruction transmission unit 40 c transmits an alarm instruction to the article tag 2 and issues an alarm from the article tag 2.
The communication connection processing unit 40d performs communication connection by pairing with the article tag 2. The communication search step described above is performed by the main control unit (communication search means) 40a, and the communication connection step is performed by the communication connection processing unit 40d.
The communication disconnection processing unit 40e disconnects the communication connection with the device connected for communication in the communication connection step. As a result, the communication connection processing unit 40d can perform communication connection with other devices.

The measurement signal determination processing unit 40 f determines whether or not the received signal strength of the measurement signal transmitted from the article tag 2 exceeds a threshold value stored in advance in the storage unit 44.
In the present embodiment, an RSSI signal is used as the measurement signal, and an RSSI value is used as the received signal strength.
The article information transmission instruction transmission unit 40g transmits an article information transmission instruction to each device in a state in which communication connection with the article tag 2 is performed.
The article information storage processing unit 40 h stores the article information transmitted from the article tag 2 in the storage unit 44.
The accounting processing unit 40 i extracts the MAC address corresponding to the article information transmitted from the POS management device 5 from the storage unit 44. In addition, the accounting processing unit 40 i transmits an operation stop instruction to the management tag 2, and when receiving a stop completion signal from the management tag 2, deletes the display of the article information from the display unit 41. Further, when the operation unit 42 inputs an end operation instruction from the user, the accounting processing unit 40i opens the entry restriction bar 107.
The alarm processing unit 40j drives the alarm unit 46 and causes the alarm unit 46 to issue an alarm. Further, the alarm processing unit 40j changes the alarm according to the reception intensity of the measurement signal transmitted from the article tag 2. For example, the interval and size of the alarm are changed.
The infrared image processing unit 40k performs infrared image processing so that the image data input by the camera unit 45 can be seen under infrared rays.

FIG. 7 is a functional block diagram showing the POS management device 5 for each function.
The POS management device 5 includes a control unit 50 that controls the entire device, a display unit 51 that displays various types of information, an operation unit 52 that receives operations from the user, a communication unit 53 that performs communication, and various types of information. And a storage unit 54 for storing.
The display unit 51 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information and the like.
The operation unit 52 includes, for example, a keyboard, a mouse, a touch pad, buttons, a scanner, and the like, and inputs various information and instructions from the user.
The communication unit 53 communicates with the cash register antitheft device 4 and the article management device 7 by wired or wireless LAN connection.
The storage unit 54 includes, for example, a hard disk and a memory, and stores various programs and work data in addition to article information.

The control unit 50 includes a main control unit 50a and an article information processing unit 50b that performs processing on article information.
The article information processing unit 50 b extracts article information corresponding to the barcode information input by the operation unit 52 from the storage unit 54, displays the article information on the display unit 51, and transmits the article information to the cash register antitheft device 4. .

FIG. 8 is a functional block diagram showing the blind spot antitheft device 6 for each function.
The blind spot antitheft device 6 includes a control unit 60 that controls the entire device, a display unit 61 that displays various information, an operation unit 62 that receives operations from a user, a communication unit 63 that performs communication, A storage unit 64 for storing information and a camera unit 65 for capturing images are provided.
The display unit 61 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information.
The operation unit 62 includes, for example, a keyboard, a mouse, a touch pad, or buttons, and inputs various information and instructions from the user.
The communication unit 63 communicates with the article tag 2. Here, as described above, short-range wireless communication such as Bluetooth (registered trademark) LE is performed. In addition, the communication unit 63 communicates with the article management device 7 through a wired or wireless LAN connection.
The storage unit 64 includes, for example, a hard disk and a memory, and stores various programs, work data, and the like in addition to the MAC address of the article tag 2 and the like.
The camera unit 65 is provided on the front and rear surfaces of the blind spot antitheft device 6, and an image input from the rear camera is displayed on the front display unit 61.

The control unit 60 includes a main control unit 60 a, an identification information determination processing unit 60 b that determines registration of the MAC address of the article tag 2, and an alarm instruction transmission unit 60 c that transmits an alarm instruction to the article tag 2.
Further, the control unit 60 includes a communication connection processing unit 60d that performs communication connection with the article tag 2 and Bluetooth (registered trademark), a communication disconnection processing unit 60e that disconnects communication connection with Bluetooth (registered trademark), and the article tag 2. An article information transmission instruction transmission unit 60f that transmits an article information transmission instruction to the apparatus is provided.

The identification information determination processing unit 60b determines whether or not the MAC address transmitted from the article tag 2 is already stored in the storage unit 64 (monitoring determination, duplication determination).
The alarm instruction transmission unit 60 c transmits an alarm instruction to the article tag 2 and issues an alarm from the article tag 2.
The communication connection processing unit 60d performs communication connection with the article tag 2 by pairing. The communication search step described above is performed by the main control unit (communication search means) 60a, and the communication connection processing unit 60d performs the communication connection step.
The communication disconnection processing unit 60e disconnects the communication connection with the device connected for communication in the communication connection step. As a result, the communication connection processing unit 60d can perform communication connection with other devices.
The article information transmission instruction transmission unit 60f transmits an article information transmission instruction to each device in a state where communication connection with the article tag 2 is performed.

FIG. 9 is a functional block diagram showing the article management apparatus 7 for each function.
The article management apparatus 7 includes a control unit 70 that controls the entire apparatus, a display unit 71 that displays various information, an operation unit 72 that receives operations from a user, a communication unit 73 that performs communication, and various types of information. A storage unit 74 for storing and an alarm unit 76 for generating an alarm are provided.
The display unit 71 includes, for example, a monitor such as a liquid crystal or an organic EL, and displays article information and the like.
The operation unit 72 includes, for example, a keyboard, a mouse, a touch pad, buttons, a scanner, and the like, and inputs various information and instructions from the user.
The communication unit 73 communicates with the gate anti-theft device 1, the article tag 2, the cash register monitoring device 4, the POS management device 5, and the blind spot anti-theft device 6 through a wired or wireless LAN connection.
The storage unit 74 includes, for example, a hard disk and a memory, and stores various programs and work data in addition to a MAC address. For example, the storage unit 74 stores the MAC address, link key, and PIN code of the gate anti-theft device 1, the product tag 2, the cash register monitoring device 4, the POS management device 5, and the blind spot anti-theft device 6 in addition to the product information. Remember.
The alarm unit 76 emits an alarm sound or emits light. As an alarm, various reactions such as vibration and deformation as well as sound and light are possible.

  The control unit 70 stores the article information read by the operation unit 72 in the storage unit 74 of the article tag 2. When the control unit 70 receives an alarm instruction transmitted from the gate antitheft device 1, the cash register antitheft device 4, and the blind spot antitheft device 6, the control unit 70 drives the alarm unit 76 to issue an alarm. Further, the control unit 70 stores the moving image information transmitted from the gate antitheft device 1, the cash register necessity monitoring device 4 and the blind spot antitheft device 6 in the storage unit 74 in association with the date and time.

Next, an actual layout of the antitheft system 100 will be described.
FIG. 10 is an explanatory diagram showing an example when the anti-theft system 100 is applied to an actual store.
The store 120 has an entrance / exit 101 where customers mainly enter and exit, a normal display area 102, a blind spot area 103, a normal settlement area 104, an in-lane settlement area 105, and a backyard BY as a management office space. .
A gate antitheft device 1 is provided in the vicinity of the doorway 101. In the vicinity of the entrance / exit 101, a store clerk S carrying the portable article management apparatus 3 stands by.
The article G is displayed in the normal display area 102 and the blind spot area 103. The article tag 2 is attached to these articles G.
In the normal checkout area 104 and the in-lane checkout area 105, the customer A accounts for the goods G brought from the normal display area 102 and the blind spot area 103. The normal settlement area 104 and the in-lane settlement area 105 are provided with a cash register antitheft device 4, a POS management device 5, and a scanner 106. Further, an entrance restriction bar 107 serving as an open / close gate for controlling the flow of customers is provided near the entrance of each row of cash registers. The in-lane checkout area 105 is provided with a loading platform 108 for putting articles into a bag after the check-out and an in-lane entrance 109.
An article management device 7 is provided in the backyard BY.

Note that symbol A indicates a customer, and the customer in the normal settlement area 104 completes the settlement while moving from the bottom to the top of the figure, and exits from the entrance 101. On the other hand, the customer in the in-lane settlement area 105 completes the settlement while moving from the top to the bottom of the figure, and exits from the in-lane entrance 109.
Also, in order not to perform pairing between adjacent cash register anti-theft devices 4, so that the other cash register anti-theft device 4 is not arranged in the communicable area of one cash register anti-theft device 4, And the installation position is adjusted so that the article tags 2 arranged in the other row are not arranged. Thereby, one cash register antitheft device 4 does not perform communication search and communication connection with the other cash register antitheft device 4 and the article tag 2 arranged in the other column. Furthermore, since the entry restriction bar 107 arranged at the entrance of the row of each cash register antitheft device 4 is arranged outside the communicable area of each cash register antitheft device 4, The product tags 2 of the customer A and the customer A lined up in front of the entry restriction bar 107 are not detected and recognized in the cash register antitheft device 4 together.

Next, the operation of the antitheft system 100 will be described.
The gate anti-theft device 1, the article tag 2, the portable anti-theft device 3, the cash register anti-theft device 4, the POS management device 5, the blind spot anti-theft device 6 and the article management device 7, respectively, required MAC addresses. And article information are stored in each storage unit, and pairing information with the article tag 2 is also registered. However, the gate anti-theft device 1, the portable anti-theft device 3, the cash register anti-theft device 4 and the blind spot anti-theft device 6 use different profiling and do not pair each other.

First, a case will be described in which the customer A tries to take the article G out of the entrance / exit 101 without payment.
When the customer A removes the article tag 2 from the article G in the normal display area 104, the operation unit 22 inputs an alarm instruction, and the alarm processing unit 20e drives the alarm unit 26 to issue an alarm from the alarm unit 26. . Thereby, an alarm sound is emitted from the speaker 202 and notified to the clerk S, and the mid-infrared LED module 203 is driven to emit mid-infrared light. The transmission output control unit 20c increases the transmission output from the normal output of 0.2 mW to the maximum output of 2.5 mW. As a result, the portable anti-theft device 3 not only enables image check using infrared rays, which will be described later, but also immediately performs pairing with the anti-theft device 1 for the gate when the article G is brought near the entrance / exit 101. Is possible.

  On the other hand, the customer A holds the article G with the article tag 2 attached, and reaches the vicinity of the entrance / exit 101. Then, as shown in FIG. 11, the main control unit 10a of the gate antitheft device 1 transmits its own MAC address on the advertising packet (step S1). When the main control unit 20a of the article tag 2 receives the MAC address via the communication unit 23 (communication search step), the identification information determination processing unit 20b determines whether the MAC address is stored in the storage unit 24 in advance. (Step S2, monitoring determination). If the identification information determination processing unit 20b determines that the information is not stored in advance, the main control unit 20a ignores the MAC address and repeats the communication search step. At this time, since the transmission output of the article tag 2 is a normal output of 0.2 mW and the communication distance is about 20 cm, the gate antitheft device 1 is not within the communicable area of the article tag 2. In many cases, therefore, the advertising packet from the article tag 2 cannot be received, and the article tag 2 cannot be detected and recognized.

On the other hand, when the identification information determination processing unit 20b determines that the MAC address is stored in advance, the transmission output control unit 20c increases the transmission output (step S3). For example, the normal output is increased from 0.2 mW to the communication connection output of 1.2 mW. As a result, the communication distance increases from about 20 cm to about 5 m, and the gate antitheft device 1 enters the search area of the article tag 2.
Then, the main control unit 20a of the article tag 2 transmits its own MAC address and RSSI signal to the gate antitheft device 1 on the advertising packet (step S4, identification information transmission step).
The main control unit 10a of the gate antitheft device 1 receives the MAC address via the communication unit 13 (communication search step). Thereby, the antitheft device 1 for gates can search and detect the article tag 2 and recognize its presence. At this time, the main control unit 10a sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 14 stores the plurality of MAC addresses as identification information for detection. The presence of a plurality of article tags 2 is recognized simultaneously.
Furthermore, the identification information determination processing unit 10b determines whether or not the MAC address is stored in advance in the storage unit 14 (step S5, monitoring determination). If the identification information determination processing unit 10b determines that the information is not stored in advance, the main control unit 10a ignores the MAC address and repeats the communication search step. On the other hand, when the identification information determination processing unit 10b determines that the MAC address is stored in advance, the measurement signal determination processing unit 10f acquires the RSSI value from the RSSI signal transmitted from the article tag 2, and the RSSI value is It is determined whether or not the threshold value stored in advance in the storage unit 14 is exceeded (step S6). For example, the threshold is set to −60 dBm. Note that the RSSI value is related to the distance. For example, when the devices are closer to each other than when the RSSI value is −60 dBm, the RSSI value is −40 dBm, for example. Of course, this threshold value is merely an example, and it goes without saying that the numerical value can be changed as appropriate.

When the measurement signal determination processing unit 10f determines that the RSSI value exceeds the threshold value of −60 dBm, the communication connection processing unit 10d performs communication connection processing with the article tag 2. Specifically, the communication connection processing unit 10d transmits a pairing request to the article tag 2 (step S7).
When the main control unit 20a of the article tag 2 receives the pairing request via the communication unit 23, the communication connection processing unit 20g transmits a pairing response for notifying that pairing is possible (step S8). ).
The communication connection processing unit 10d of the gate antitheft device 1 receives the pairing response, thereby establishing communication connection (communication connection step). And the warning instruction | indication transmission part 10c transmits a warning instruction | indication to the goods tag 2 (step S9). At this time, the alarm instruction transmission unit 10 c may transmit an alarm instruction or an image captured by the camera unit 15 to the article management apparatus 7.
When the main control unit 10a of the article tag 2 receives the alarm instruction, the alarm processing unit 20e drives the alarm unit 26 to issue an alarm (step S10, alarm instruction transmission step). Thereby, an alarm sound is emitted from the speaker 202 and notified to the clerk S, and the mid-infrared LED module 203 is driven to emit mid-infrared light.

Then, the identification information determination processing unit 10b determines whether or not the MAC address transmitted from the article tag 2 is already stored in the storage unit 14 for duplication (step S11, duplication determination). When the identification information determination processing unit 10b determines that the MAC address is not stored, the article information transmission instruction transmission unit 10g transmits an article information transmission instruction to the article tag 2 (step S12). When the main control unit 20a of the article tag 2 receives the article information transmission instruction, the article information transmission unit 20d extracts the article information stored in the storage unit 24 and transmits it to the gate antitheft device 1 (step). S13).
On the other hand, if the identification information determination processing unit 10b determines in step S11 that the MAC address transmitted from the item tag 2 is stored for duplication, the item information transmission instruction transmitting unit 10g issues the item information transmission instruction to the item tag 2. The display unit 11 displays the article information stored in the storage unit 14 for duplication corresponding to the MAC address (step S14). Alternatively, when the main control unit 10a receives the article information transmitted in step S13, the display unit 11 displays the article information received by the main control unit 10a (step S14).

On the other hand, if the measurement signal determination processing unit 10f determines in step S6 that the RSSI value does not exceed the threshold value of −60 dBm, the identification information determination processing unit 10b stores the MAC address transmitted from the item tag 2 in the item information storage. It is determined by the processing unit 10h whether or not it is stored in the storage unit 14 for duplication (step S15, duplication determination). If the identification information determination processing unit 10b determines that it is stored for duplication, the main control unit 10a ignores the MAC address and repeats the communication search step.
On the other hand, when the identification information determination processing unit 10b determines that the MAC address is not stored for duplication, the communication connection processing unit 10d transmits a pairing request (step S7), and in the same manner as described above, the article tag 2 The communication connection processing unit 20g transmits a pairing response (step S8). Then, the article information transmission instruction transmission unit 10g of the gate antitheft device 1 transmits an article information transmission instruction (step S12), and the article information transmission unit 20d of the article tag 2 transmits the article information (step S13). .

When the main control unit 10a of the gate antitheft device 1 receives the article information, the article information storage processing unit 10h associates the article information with the MAC address of the article tag 2 that is in communication connection. Store in the storage unit 14 (step S16). For example, the article information storage processing unit 10 h turns on a MAC address and article information duplication flag and stores them in the storage unit 14. The monitoring MAC address is stored in the storage unit 14 with the monitoring flag turned on.
Then, when the display unit 11 displays the article information in step S14 or the article information storage processing unit 10h stores the MAC address and the article information in the storage unit 14 in step S16, the communication disconnection processing unit 10e The communication connection with the tag 2 is disconnected (step S17, connection disconnection step). Note that the disconnection process at this time is for disconnecting only the communication connection established by the communication connection steps of step S7 and step S8, and the communication search step by the main control unit 10a is continuously performed. Therefore, when the communication disconnection processing unit 10e disconnects the communication connection, the communication connection processing unit 10d communicates with another article tag 2 that has been detected and recognized by the communication search step by the main control unit 10a. A connection can be made. That is, the communication connection processing unit 10d is paired via steps S5 to S6 with respect to the other article tag 2 detected by the main control unit 10a receiving the MAC address transmitted in step 4 and recognized for its existence. A ring request is transmitted (step S7). When the main control unit 20a of the other article tag 2 receives the pairing request, the communication connection processing unit 20g transmits a pairing response (step S8). Further, when the communication connection processing unit 10d of the gate antitheft device 1 receives the pairing response, communication connection is made with another article tag 2 (other communication connection step). Then, in the same manner as described above, the communication disconnection processing unit 10e disconnects the communication connection with the article tag 2 (step S17).
Therefore, by repeating the communication connection and the communication disconnection by the communication connection processing unit 10d and the communication disconnection processing unit 10e, the gate antitheft device 1 is not occupied only by the communication connection with one article tag 2, and other It becomes possible to make communication connections to the plurality of article tags 2.

As described above, according to the anti-theft system 100, the noise signal from the environment is used to determine whether or not the gate anti-theft device 1 matches the MAC address stored in advance for the MAC address stored in the article tag 2. Even if is sent, the noise signal can be ignored, and the target product tag 2 can be reliably connected for communication. Therefore, a detection signal from the article tag 2 that should be detected can be detected with high accuracy, and an alarm can be issued from the article tag 2.
In addition, since communication is performed according to the Bluetooth (registered trademark) system, for example, it is possible to facilitate downsizing rather than using an apparatus such as an RFID. There are two types of RFID systems, active and passive. In the passive type, since the communication distance is short in the first place, the detection range becomes extremely narrow. Therefore, if the communication range is lengthened to increase the detection range, an apparatus such as an antenna is increased in size and the cost is increased. On the other hand, although the active type has a long communication distance, the amount of distribution is small compared to the Bluetooth (registered trademark) system, so that there is relatively less demand for downsizing at a high cost. Will become bigger. For this reason, if an active type device is to be reduced in size, it must be designed and produced independently, which is costly.
According to the anti-theft system 100, since the Bluetooth (registered trademark) system is used, it is possible to use a standard small module that is generally distributed, and it is possible to reduce the size easily and inexpensively.
Also, after the communication connection processing unit 10d performs communication connection with the article tag 2 and the alarm instruction transmission unit 10c transmits an alarm instruction to the article tag 2, the communication disconnection processing unit 10e disconnects the communication connection with the article tag 2. Furthermore, when the MAC address of the other article tag 2 detected by the main control unit 10a matches the MAC address stored in advance, the communication connection processing unit 10d establishes communication connection with the other article tag 2. Therefore, the communication connection processing unit 10d can immediately establish communication connection with the other article tag 2. Therefore, even if a plurality of customers illegally take out a plurality of articles G from the entrance / exit 101, or a single customer tries to take out a plurality of articles G from the entrance / exit 101, the plurality of articles G attached to the articles G The product tags 2 can be connected to each other in communication, and alarms can be issued to the product tags 2 one after another.
In addition, for example, when using an acousto-magnetic tag, when an article with a tag attached to it at another store is brought to another store, it is not illegal. It may be possible to react to the alarm gate of the store. According to the anti-theft system 100, the registration determination by the MAC address is performed for each store. Therefore, the article tag 2 can be used only at the store 120 and can be prevented from reacting at other stores.

Further, only when the measurement signal determination processing unit 10f determines whether or not the received signal strength of the measurement signal transmitted from the article tag 2 exceeds a prestored threshold, and determines that it exceeds the threshold, Since the communication connection processing unit 10d performs the communication connection, it is possible to preferentially issue an alarm to the article tag 2 that is likely to be illegally taken out from the entrance 101. For example, in FIG. 10, the unauthorized take-out area P1 in which the received signal strength exceeds the threshold is set as a narrow area in the communicable area P2 with respect to the communicable area P2 in which the gate antitheft device 1 can perform communication connection. Keep it. Then, the article tag 2 is arranged in the communicable area P2 of the gate antitheft device 1, and the transmission output of the article tag 2 is increased (step S3). The gate theft also in the communicable area of the article tag 2 When the prevention device 1 is arranged, communication connection with each other becomes possible, and an alarm from the article tag 2 becomes possible. Therefore, if the communicable area P2 of the gate antitheft device 1 is narrowed, the transmission output for communication can be reduced, and the number of target product tags 2 can be reduced. However, if the communicable area P2 is made too small, after the article tag 2 is arranged in the communicable area P2, the period from the communication search step to the communication connection step is performed and an alarm is issued from the article tag 2. In addition, the article G may be taken out illegally. Therefore, as in this embodiment, by keeping the communicable area P2 wider than the fraudulent take-out area P1, the communication search step can be completed earlier in the communicable area P2, and illegal take-out can be prevented. A possible article tag 2 can be detected in advance to recognize its presence. Then, when the article tag 2 is arranged from the communicable area P2 to the unauthorized take-out area P1, the communication connection step can be performed immediately without performing the communication search step again, and the article tag 2 promptly issues an alarm. Can be emitted.
Note that since the RSSI signal is used to measure the intensity of the received signal, the intensity of the received signal can be measured easily and cheaply compared with, for example, the RFID method. That is, if an attempt is made to use an RSSI signal, it is necessary to separately install an access point in the RFID method. However, since the Bluetooth (registered trademark) method can use the RSSI signal as a standard, The intensity of the received signal can be easily measured.

Further, since the display unit 11 of the gate antitheft device 1 displays the product information transmitted by the product tag 2 (step S14), the store clerk S is notified of the corresponding product when an alarm is issued from the product tag 2. It is possible to facilitate the discovery of illegal items.
When the measurement signal determination processing unit 10f determines that the received signal strength does not exceed the threshold (step S6), the article information transmission instruction transmission unit 10g transmits an article information transmission instruction (step S12), and the main control unit 10a. Is received in the communicable area P2 because the communication disconnection processing unit 10e disconnects the communication connection without the alarm instruction transmitting unit 10c transmitting the alarm instruction after receiving the article information (step S17). The article information of the article tag 2 that is likely to be illegally taken out can be acquired in advance.
Further, when the measurement signal determination processing unit 10f determines that the received signal strength does not exceed the threshold value (step S6), it is identified that the MAC address transmitted from the article tag 2 matches the MAC address stored for duplication. When the information determination processing unit 10b determines (step S15), since the communication connection processing unit 10d does not perform communication connection, it is possible to prevent redundant connection with the article tag 2 that has been connected once. The efficiency of the system can be improved. For the article information stored for duplication, the main control unit 10a determines whether or not a predetermined time has elapsed since the article information storage processing unit 10h stored in the storage unit 14, and if the main control unit 10a determines that it has elapsed, the main control unit 10a Deletes the article information from the storage unit 14. That is, the main control unit 10a functions as an article information deleting unit.

When the identification information determination processing unit 10b determines that the MAC address transmitted from the article tag 2 matches the MAC address stored for duplication (step S11), the article information transmission instruction transmission unit 10g instructs the article information transmission instruction. Since the display unit 11 displays the article information corresponding to the MAC address stored in the storage unit 14 without sending (step S14), it is possible to prevent duplicate transmission / reception of article information that has been acquired once. Article information can be displayed quickly.
When the identification information determination processing unit 20b of the article tag 2 determines that the MAC address transmitted from the gate antitheft device 1 matches the MAC address stored in advance (step S2), the transmission output control unit Since 20c increases the transmission output (step S3), it is possible to increase the transmission output only when necessary, such as when it is illegal, and to suppress the power consumption of the article tag 2 at the normal time.
The gate antitheft device 1 is provided with an alarm processing unit and an alarm unit, and when the alarm instruction transmitting unit 10c transmits an alarm instruction, the alarm processing unit drives the alarm unit to issue an alarm. Good.
In addition, the main control unit 10a of the gate antitheft device 1 sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 14 stores the plurality of MAC addresses as identification information for detection. Thus, the existence of the plurality of article tags 2 is recognized at the same time, but the timing of storing these MAC addresses can be changed as appropriate. For example, when the identification information determination processing unit 10b determines that the MAC address is stored in advance in the storage unit 14 in step S5, the storage unit 14 stores the MAC address as detection identification information. May be.
Then, after the communication disconnection processing unit 10e once performs the pairing disconnection processing (step S17), from the storage unit 14 stored as the above-described detection identification information, for example, from the one having the highest reception strength, The connection processing unit 10d may transmit a pairing request (step S7). Thereby, since it is not necessary to perform the MAC address registration determination in step S5 each time, it is possible to quickly connect to other article tags 2 with high speed and high accuracy.

Next, the operation of the portable antitheft device 3 in a state where the article tag 2 has issued an alarm according to an alarm instruction from the gate antitheft device 1 will be described with reference to FIG. Note that operations similar to those described above will be briefly described in order to avoid duplication.
First, when the article tag 2 receives an alarm instruction from the gate antitheft device 1, the speaker 202 emits an alarm sound and the mid-infrared LED module 203 blinks and emits mid-infrared light. In this state, the store clerk S operates the portable antitheft device 3 for the customer A holding the article tag 2. When the clerk S touches the “search” button on the touch panel, the operation unit 32 inputs an infrared image processing instruction. Then, the infrared image processing unit 30h performs infrared image processing on the image data input from the camera unit 35, and displays the processing result on the display unit 31 (step S20). That is, the store clerk S directs the camera unit 35 on the back of the portable antitheft device 3 to the customer and takes a picture of the customer. The display unit 11 displays monochrome image data. At this time, since the mid-infrared LED module 203 of the article tag 2 emits flashing light, the flashing light is displayed on the display unit 11. The position of the article tag 2 can be grasped by moving the camera unit 35 while visually observing the blinking display.

Further, the main control unit 20 a of the article tag 2 transmits the MAC address and the measurement signal to the portable antitheft device 3. The main control unit 30a of the portable antitheft device 3 receives these MAC addresses and measurement signals (step S4, communication search step). At this time, the main control unit 30a sequentially receives the plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 34 stores the plurality of MAC addresses as detection identification information. The presence of a plurality of article tags 2 is recognized simultaneously. Then, the identification information determination processing unit 30b determines whether or not the MAC address is stored in the storage unit 34 for monitoring (step S21, monitoring determination). When the identification information determination processing unit 30b determines that the MAC address is not stored for monitoring, the main control unit 30a ignores the MAC address and repeats the communication search step.
On the other hand, when the identification information determination processing unit 30b determines that the MAC address is stored for monitoring, the identification information determination processing unit 30b determines whether the MAC address is already stored in the storage unit 34 for duplication. (Step S22, determination for duplication). When the identification information determination processing unit 30b determines that the MAC address is not stored, the communication connection processing unit 30c transmits a pairing request to the article tag 2 (step S23).
When the main control unit 20a of the article tag 2 receives the pairing request via the communication unit 23, the communication connection processing unit 20g transmits a pairing response (step S24).
When the communication connection processing unit 30c of the gate antitheft device 1 receives the pairing response, communication connection is performed (communication connection step).

Then, the article information transmission instruction transmission unit 30i of the portable antitheft device 3 transmits an article information transmission instruction to the article tag 2 (step S25). When the main control unit 20a of the article tag 2 receives the article information transmission instruction, the article information transmission unit 20d extracts the article information stored in the storage unit 24 and transmits it to the portable antitheft device 3 (step). S26).
When the main control unit 30a of the portable antitheft device 3 receives the article information, the article information storage processing unit 30e associates the article information with the MAC address of the article tag 2 that is in communication connection, for duplication. It memorize | stores in the memory | storage part 34 (step S27).
Then, the communication disconnection processing unit 30d disconnects the communication connection with the article tag 2 (step S28). Thereby, the communication connection processing unit 30c performs the communication connection with the other article tag 2 that the portable antitheft device 3 detects and recognizes its presence through the communication search step by the main control unit 30a in the same manner as described above. .

Then, when the communication disconnection processing unit 30d disconnects the communication connection, the display unit 31 displays the received article information in association with the signal strength (step S29). Alternatively, when the identification information determination processing unit 30b determines in step S22 that the MAC address transmitted from the article tag 2 is stored for duplication, the identification information determination processing unit 30b stores the duplication for the MAC address in correspondence with the MAC address. The display unit 11 displays the received article information and the acquired signal intensity (step S29). The signal strength is acquired by the measurement signal strength determination processing unit 30f as the RSSI value of the RSSI signal transmitted from the article tag 2. The magnitude of the signal intensity is displayed in a bar graph in association with the article information. Note that the display of the magnitude of the signal strength may be another transmission method. For example, sound or vibration may be used.
Further, the measurement signal strength determination processing unit 30f reads alarm sound data previously associated with the RSSI value from the storage unit 34, and the alarm processing unit 30g emits an alarm sound according to the alarm sound data via the alarm unit 36. (Step S30). That is, the alarm processing unit 30g changes the alarm according to the reception intensity of the measurement signal transmitted from the article tag 2. For example, the store clerk S moves the camera unit 35 of the portable antitheft device 3 toward the customer A, and while viewing the infrared conversion image of the display unit 31, the article information and the bar graph shape displayed on the display unit 31. Visually observe the signal strength and the alarm sound. When the portable antitheft device 3 approaches the article tag 2 held by the customer A, the bar graph signal intensity increases and the sounding interval of the alarm sound gradually narrows to “pi, pi, pi”. Go. When the RSSI value is maximized, the bar graph indicates the maximum, and the alarm sound becomes a continuous sound such as “Peep”. At this time, the continuous sound may be gradually increased.
Thereby, even if the customer A conceals the article G, the position of the article G in the customer A can be specified by the infrared image, the bar graph, and the alarm sound.

As described above, according to the anti-theft system 100, the same effect as described above can be obtained by the same operation as described above.
Moreover, since the infrared image is displayed, the position of the article G among the customers A can be easily searched.
Further, since the signal intensity is displayed as a bar graph, the position of the article G among the customers A can be easily searched for in the same manner.
Furthermore, since the alarm sound is changed according to the signal intensity, the position of the article G in the customer A can be easily searched for in the same manner.
Note that at least one of the infrared image display, the signal intensity display, and the alarm sound is sufficient.
The main control unit 30a of the portable antitheft device 3 sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 34 stores the plurality of MAC addresses as identification information for detection. Thus, the existence of the plurality of article tags 2 is recognized at the same time, but the timing of storing these MAC addresses can be changed as appropriate. For example, when the identification information determination processing unit 30b determines in step S21 that the MAC address is stored in advance in the storage unit 34, the storage unit 34 stores the MAC address as detection identification information. May be.
Then, after the communication disconnection processing unit 30d once performs the pairing disconnection processing (step S28), the storage unit 34 stores the above-described detection identification information. The connection processing unit 30d may transmit a pairing request (step S23). Thereby, since it is not necessary to perform the MAC address registration determination in step S21 each time, it is possible to quickly connect to other article tags 2 with high speed and high accuracy.

Next, the operation of the anti-theft system 100 when the customer A performs an appropriate accounting process in the normal settlement area 104 or the in-lane settlement area 105 will be described with reference to FIGS. 13 and 14. Note that operations similar to those described above will be briefly described in order to avoid duplication.
First, when the customer A passes the entry restriction bar 107, the customer A stands in the vicinity of the cash register antitheft device 4 in front of the store clerk S and performs the accounting process. At this time, when the customer A crosses the entry restriction bar 107, the article tag 2 of the article G possessed by the customer A is placed in the communicable area of the cash register antitheft device 4. Then, as shown in FIG. 13, the main control unit 40a of the cash register antitheft device 4 broadcasts its own MAC address on the advertising packet (step S40). When the main control unit 20a of the article tag 2 receives the MAC address (communication search step), the identification information determination processing unit 20b determines whether or not the MAC address is stored in advance in the storage unit 24 (step). S41). If the identification information determination processing unit 20b determines that the information is not stored in advance, the main control unit 20a ignores the MAC address and repeats the communication search step.

On the other hand, when the identification information determination processing unit 20b determines that the MAC address is stored in advance, the transmission output control unit 20c increases the transmission output (step S42). As a result, the cash register antitheft device 4 enters the search area of the article tag 2.
Then, the main control unit 20a of the article tag 2 transmits its own MAC address and RSSI signal to the cash register antitheft device 4 on the advertising packet (step S43).
The main control unit 40a of the cash register antitheft device 4 receives the MAC address (communication search step). At this time, the main control unit 40a sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 44 stores the plurality of MAC addresses as identification information for detection. The presence of a plurality of article tags 2 is recognized simultaneously. Then, the identification information determination processing unit 40b determines whether or not the MAC address is stored in advance in the storage unit 44 (step S44, determination for monitoring). If the identification information determination processing unit 40b determines that it is not stored in advance, the main control unit 40a ignores the MAC address and repeats the communication search step. On the other hand, when the identification information determination processing unit 40b determines that the MAC address is stored in advance, the identification information determination processing unit 40b determines whether or not the MAC address is already stored in the storage unit 44 for duplication. Determination (step S45, determination for duplication). When the identification information determination processing unit 40b determines that the MAC address is not stored, the communication connection processing unit 40d transmits a pairing request to the article tag 2 (step S46).
When the main control unit 20a of the article tag 2 receives the pairing request, the communication connection processing unit 20g transmits a pairing response (step S47).
When the communication connection processing unit 40d of the cash register antitheft device 4 receives the pairing response, communication connection is performed (communication connection step).

Then, the article information transmission instruction transmission unit 40g of the cash register antitheft device 4 transmits an article information transmission instruction to the article tag 2 (step S48). When the main control unit 20a of the article tag 2 receives the article information transmission instruction, the article information transmission unit 20d extracts the article information stored in the storage unit 24 and transmits it to the cash register antitheft device 4 (step). S49).
When the main control unit 40a of the cash register antitheft device 4 receives the article information, the article information storage processing unit 40h associates the article information with the MAC address of the article tag 2 that is in communication connection, for duplication. It memorize | stores in the memory | storage part 44 (step S50).
Then, the communication disconnection processing unit 40e disconnects the communication connection with the article tag 2 (step S51).

Then, when the communication disconnection processing unit 40e disconnects the communication connection, the display unit 41 displays the received article information (step S52). Alternatively, when the identification information determination processing unit 40b determines in step S45 that the MAC address transmitted from the article tag 2 is stored for duplication, the communication connection processing unit 40d sets the MAC address without communication connection. The display unit 41 displays the article information stored in the storage unit 44 for duplication correspondingly (step S52).
Thereby, the article information corresponding to all the article tags 2 arranged in the vicinity of the cash register antitheft device 4 is displayed on the display unit 41, and the store clerk S visually checks the article information by viewing the display unit 41. Can do.
Then, the store clerk S receives the item G from the customer A, and performs a reading operation of the barcode information of the item G by the scanner 106. That is, when the operation unit 52 of the POS management device 5 inputs the barcode information (step S53), the article information processing unit 50b extracts the article information stored in the storage unit 54 in association with the barcode information. (Step S54), the display unit 51 displays the article information.
Then, the main control unit 50a of the POS management device 5 transmits the article information to the cash register antitheft device 4 (step S56).

When the main control unit 40a of the cash register antitheft device 4 receives the article information, as shown in FIG. 14, the accounting processing unit 40i extracts the corresponding MAC address from the storage unit 44 (step S60). At this time, since the article information and the MAC address are associated with each other in step S50, the accounting processing unit 40i of the cash register antitheft apparatus 4 responds from the article information transmitted from the POS management apparatus 5. The MAC address can be extracted from the storage unit 44.
Then, the measurement signal determination processing unit 40f determines the received signal strength for each MAC address stored for duplication in the storage unit 44 (step S61).
Furthermore, the communication connection processing unit 40d transmits a pairing request to the article tag 2 (step S62). The communication connection processing unit 20g of the article tag 2 transmits a pairing response to the cash register antitheft device 4 (step S63). Then, when the communication connection processing unit 40d of the cash register antitheft device 4 receives the pairing response, the accounting processing unit 40i transmits an operation stop instruction to the article tag 2 (step S64). When receiving the operation stop instruction, the main control unit 20a of the article tag 2 transmits an operation stop signal to the cash register antitheft device 4 (step S65). Then, the alarm instruction stop processing unit 20f of the article tag 2 emits, for example, a beep sound from the alarm unit 26, and stops the operation of the article tag 2 (step S66). Thereby, the clerk S can recognize that the article tag 2 has stopped operating. Thereafter, even if the article tag 2 is removed from the article G, the alarm unit 21 does not issue an alarm because the operation of the article tag 2 is stopped at this time.

Then, when the main control unit 50a of the cash register antitheft device 4 receives the operation stop signal, the accounting processing unit 40i of the cash register antitheft device 4 has the MAC address corresponding to the item information transmitted from the POS management device 5. Among them, the MAC address having the highest received signal strength obtained in step S61 is extracted, the MAC address and article information are deleted from the storage unit 54, and the display by the display unit 51 is deleted (step S67). Accordingly, based on the article information corresponding to the barcode information read by the scanner 106, even if a plurality of MAC addresses are supported in the cash register antitheft device 4, the MAC addresses having the highest received signal strength are sequentially deleted. It becomes possible to do. In order to extract the MAC address with high accuracy, the received signal strength detected by the cash register antitheft device 4 with the distance between the article tag 2 read by the scanner 106 and the cash register antitheft device 4 as close as possible is increased. It is preferable to make it as large as possible.
When the accounting process is performed for all the articles G, all the article information displayed on the display unit 41 of the cash register antitheft device 4 is erased.

Then, the cash register antitheft device 4 accepts an accounting process end operation by the store clerk S, and the operation unit 42 inputs an accounting process end signal (step S68). For example, an “end” button is displayed on the display unit 41, and the clerk S touches the “end” button. Then, the main control unit 40a transmits an accounting process end signal to the POS management device 5 (step S69).
When receiving the transaction processing end signal, the main control unit 50a of the POS management device 5 opens the entry restriction bar (step S70) and passes the next customer A. Then, the main control unit 50a closes the entry restriction bar 107 again after a predetermined time has elapsed.

As described above, according to the anti-theft system 100, the same effect as described above can be obtained by the same operation as described above.
Moreover, the article tag 2 can be appropriately removed from the article G by stopping the operation of the article tag 2 for which the accounting process has been completed.
Further, since all the item information of the item tag 2 arranged in the communicable area of the cash register antitheft device 4 can be displayed on the display unit 41, the store clerk S can be informed of what item is present.
Further, since the display on the display unit 41 can be erased based on the barcode information read by the scanner 106, the store clerk S can easily determine whether the accounting process is being completed or the accounting process has been completed for all articles. I can let you know.
The main control unit 40a of the cash register antitheft device 4 sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 44 stores the plurality of MAC addresses as identification information for detection. Thus, the existence of the plurality of article tags 2 is recognized at the same time, but the timing of storing these MAC addresses can be changed as appropriate. For example, when the identification information determination processing unit 40b determines in step S44 that the MAC address is stored in the storage unit 44 in advance, the storage unit 44 stores the MAC address as detection identification information. May be.
Then, after the communication disconnection processing unit 40e once performs the pairing disconnection processing (step S51), the storage unit 44 stores the above identification information for detection. The connection processing unit 40d may transmit a pairing request (step S46). Thereby, since it is not necessary to perform the MAC address registration determination in step S44 each time, it is possible to quickly connect to other article tags 2 with high speed and high accuracy.

Next, in the normal checkout area 104 or the in-lane checkout area 105, the customer A performs an appropriate accounting process for some articles G and holds the other articles G illegally without performing an appropriate accounting process. The operation of the antitheft system 100 in the case of being present will be described with reference to FIG. Note that operations similar to those described above will be briefly described in order to avoid duplication.
First, when the customer A enters the communicable area of the cash register antitheft device 4, the article information of all the article tags 2 arranged in the communicable area is displayed on the display unit 41 (step S52). ). When the barcode information is read by the scanner 106, the article information displayed on the display unit 41 is sequentially deleted (step S67). Therefore, when all the articles G are accounted for correction, all the article information displayed on the display unit 41 is erased. However, if the customer A illegally possesses the article G, the article G for which the accounting process is not performed remains displayed on the display unit 41.

Therefore, when the clerk S touches the article information displayed on the display unit 41, the operation unit 42 inputs the selected article information (step S80), and the display unit 41 uses the “release” and “detect” buttons. indicate. When the clerk S touches the “release” button, the operation unit 42 inputs a release instruction (step S81), and the display about the article information is erased.
On the other hand, when the clerk S touches the “detect” button, the operation unit 42 inputs a detection instruction (step S81), and the communication connection processing unit 40d transmits a pairing request to the article tag 2 (step S82). When receiving the pairing request, the communication connection processing unit 20g of the article tag 2 transmits a pairing response to the cash register antitheft device 4 (step S83).
When the communication connection processing unit 40d of the cash register antitheft device 4 receives the pairing response, the alarm instruction transmitting unit 40c transmits an alarm instruction to the article tag 2 (step S84). When the main control unit 20a of the article tag 2 receives the alarm instruction, the alarm processing unit 20e drives the alarm unit 26 to issue an alarm.
Accordingly, the store clerk S can be informed of the position of the article tag 2 by an alarm sound emitted from the speaker 202.

If the position of the article tag 2 is still difficult to understand, the article tag 2 is searched for as follows. First, the clerk S removes the cash register antitheft device 4 from the dedicated cradle and holds it by hand. A “search” button is displayed on the display unit 41, and the clerk S touches the “search” button. Then, the operation unit 42 inputs a search instruction (step S86), and the display unit 31 displays the selected article information in association with the signal intensity in the same manner as in step S29 (step S87). Further, in the same manner as in step S30, the measurement signal strength determination processing unit 40f reads alarm sound data previously associated with the RSSI value from the storage unit 44, and the alarm processing unit 40j emits an alarm sound via the alarm unit 46. (Step S88). Further, the infrared image processing unit 40k performs infrared image processing on the image data input from the camera unit 45, and displays the processing result on the display unit 41 (step S89).
Thereby, even if the customer A conceals the article G, the position of the article G in the customer A can be specified by the infrared image, the bar graph, and the alarm sound.
When an operation from the user is accepted and the operation unit 42 inputs return information (step S90), the display is erased from the display unit 41, and the article tag 2 is received under an alarm stop instruction from the cash register antitheft device 4. The alarm is stopped.

As described above, according to the anti-theft system 100, the same effect as described above can be obtained by the same operation as described above.
Moreover, since the infrared image is displayed, the position of the article G among the customers A can be easily searched.
Further, since the signal intensity is displayed as a bar graph, the position of the article G among the customers A can be easily searched for in the same manner.
Furthermore, since the alarm sound is changed according to the signal intensity, the position of the article G in the customer A can be easily searched for in the same manner.

Next, the operation of the anti-theft system 100 in the blind spot area 103 will be described with reference to FIG. Note that operations similar to those described above will be briefly described in order to avoid duplication.
In the blind spot area 103, the article tag 2 is set to be arranged in the communicable area of the blind spot antitheft device 6, and the normal transmission output of the article tag 2 is small. The blind spot antitheft device 6 is not arranged in the area. Therefore, in the normal time, the blind spot anti-theft device 6 can be detected and recognized from the product tag 2 by the communication search step. However, from the blind spot anti-theft device 6, each product tag 2 Is detected and its presence cannot be recognized.

  First, the main control unit 60a of the blind spot antitheft device 6 transmits its own MAC address by broadcast on the advertising packet (step S100). The main control unit 20a of the article tag 2 receives the MAC address (communication search step). At this time, since it is a normal state in which fraud has not occurred, communication connection is not performed, and the article tag 2 enters a standby state. As described above, since the transmission output of the article tag 2 is normally 0.2 mW at this time, the blind spot antitheft device 6 is not within the search area of the article tag 2, The advertising packet from the tag 2 cannot be received, and the article tag 2 cannot be detected.

  Further, the main control unit 20a detects whether or not an alarm operation has been performed (step S102). That is, when the article tag 2 is illegally removed from the article G and the switch 205 or the attached cable connection unit 208 is turned on, the main control unit 20a reads out an alarm request output from the operation unit 22. When the main control unit 20a reads the alarm request, the alarm processing unit 20e drives the alarm unit 26 to issue an alarm (step S103). Then, the transmission output control unit 20c increases the transmission output (step S104). For example, as described above, the normal output is increased from 0.2 mW to the maximum output of 2.5 mW at the time of abnormality. As a result, the blind spot antitheft device 6 enters the search area of the article tag 2.

Then, the main control unit 20a of the article tag 2 transmits its own MAC address to the blind spot antitheft device 6 (step S105).
The main control unit 60a of the blind spot antitheft device 6 receives the MAC address (communication search step). Thereby, the blind spot antitheft device 6 can detect the article tag 2 and recognize its presence. At this time, the main control unit 60a sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 64 stores the plurality of MAC addresses as identification information for detection. The presence of a plurality of article tags 2 is recognized simultaneously. Further, the identification information determination processing unit 60b determines whether or not the MAC address is stored in advance in the storage unit 64 (step S105, determination for monitoring). If the identification information determination processing unit 60b determines that the information is not stored in advance, the main control unit 60a ignores the MAC address and repeats the communication search step. On the other hand, when the identification information determination processing unit 60b determines that the MAC address is stored in advance, the communication connection processing unit 60d transmits a pairing request to the article tag 2 (step S106).
When the main control unit 20a of the article tag 2 receives the pairing request, the communication connection processing unit 20g transmits a pairing response (step S107).
When the communication connection processing unit 60d of the blind spot antitheft device 6 receives the pairing response, communication connection is performed (communication connection step).

Then, the article information transmission instruction transmission unit 60f transmits an article information transmission instruction to the article tag 2 (step S108). When the main control unit 20a of the article tag 2 receives the article information transmission instruction, the article information transmission unit 20d extracts the article information stored in the storage unit 24 and transmits it to the blind spot antitheft device 6 (step). S109).
Further, the communication disconnection processing unit 60e disconnects the communication connection (step S110).
When the main control unit 60a of the blind spot antitheft device 6 receives the article information in step S109, the article information and the moving image data of the camera unit 65 are associated with each other and transmitted to the article management device 7. It may be. As a result, an illegal site can be stored as a moving image. Further, when the main control unit 60a of the blind spot antitheft device 6 receives the article information in step S109, the alarm instruction transmission unit 60c may transmit the article information and the alarm instruction to the article management device 7. Thereby, even if there is a fraud in the blind spot area 103, the clerk S can find the fraud in the backyard BY.

As described above, according to the anti-theft system 100, the same effect as described above can be obtained by the same operation as described above.
Further, since the transmission output is reduced during normal times and the transmission output is increased only when there is a fraud, the power consumption of the article tag 2 can be suppressed.
The main control unit 60a of the blind spot antitheft device 6 sequentially receives a plurality of MAC addresses transmitted from the plurality of article tags 2, and the storage unit 64 stores the plurality of MAC addresses as identification information for detection. Thus, the existence of the plurality of article tags 2 is recognized at the same time, but the timing of storing these MAC addresses can be changed as appropriate. For example, when the identification information determination processing unit 60b determines in step S105 that the MAC address is stored in the storage unit 64 in advance, the storage unit 64 stores the MAC address as detection identification information. May be.
Then, after the communication disconnection processing unit 60e once performs the pairing disconnection processing (step S110), the storage unit 64 stores the above-described detection identification information. The connection processing unit 60d may transmit a pairing request (step S106). Thereby, since it is not necessary to perform the MAC address registration determination in step S105 each time, it is possible to quickly connect to other article tags 2 with high speed and high accuracy.

[Additional Item 1]
An alarm device connected to an anti-theft device in an attached state to prevent theft of the article,
When the identification information transmitted from the identification information transmitting means of the antitheft device is received and the identification information matches the previously stored identification information, the transmission output for communicating with the antitheft device is increased. Transmission output control means;
In a state where the transmission output control means increases the transmission output, communication connection means for connecting to the antitheft device;
An alarm device comprising: an alarm unit that issues an alarm when receiving an alarm instruction from an alarm instruction transmission unit of the anti-theft device in a state where the communication connection unit is connected to the anti-theft device.

In the present invention, when the transmission output control means receives the identification information transmitted from the identification information transmission means of the antitheft device, and the identification information matches the previously stored identification information, Increase transmission output for communication. Then, the communication connection means connects to the anti-theft device in a state where the transmission output is increased by the transmission output control means. Further, when the alarm means receives an alarm instruction from the alarm instruction transmission means of the antitheft device in a state where the alarm means is connected to the antitheft device by the communication connection means, an alarm is issued.
As a result, the transmission output can be increased only when necessary, such as when it is illegal, and power consumption during normal times can be suppressed.

[Additional Item 2]
An alarm device connected to an anti-theft device in an attached state to prevent theft of the article,
An alarm request input means for inputting an alarm request;
Alarm means for issuing an alarm when the alarm request input means inputs an alarm request; and
A transmission output control means for increasing a transmission output for communicating with the anti-theft device when the alarm request input means inputs an alarm request;
An alarm device comprising: communication connection means for connecting to the anti-theft device in a state where the transmission output control means increases the transmission output.

In the present invention, when the alarm request input means inputs an alarm request, the alarm means issues an alarm. When the alarm request input means inputs an alarm request, the transmission output control means increases the transmission output for communicating with the anti-theft device. Then, in a state where the transmission output control means increases the transmission output, the communication connection means connects to the antitheft device.
As a result, the transmission output can be increased only when necessary, such as when it is illegal, and power consumption during normal times can be suppressed.

[Additional Item 3]
An anti-theft device connected to an alarm device attached to an article to prevent the theft of the article,
Identification information receiving means for receiving identification information stored in the identification information storage means of the alarm device and transmitted from the identification information transmission means of the alarm device;
A communication connection means for connecting to the alarm device when the identification information received by the identification information receiving means matches the previously stored identification information;
An article information transmission instruction transmitting means for transmitting an article information transmission instruction to the alarm device when the communication connection means is connected to the alarm device;
Article information receiving means for receiving article information transmitted from the article information transmitting means of the alarm device;
An antitheft device comprising: display means for displaying article information received by the article information receiving means.

In this invention, when the identification information receiving means receives the identification information stored in the identification information storage means of the alarm device and transmitted from the identification information transmitting means, the identification information matches the identification information stored in advance. In addition, the communication connection means connects to the alarm device. Then, the article information transmission instruction transmission means transmits an article information transmission instruction to the alarm device. When the article information receiving means receives the article information, the display means displays the article information.
Thereby, even if a noise signal is sent from the environment, the noise signal can be ignored, and the article information transmitted from the target alarm device can be displayed. Therefore, the detection signal from the alarm device that should be detected can be detected with high accuracy, and the article information stored in the alarm device can be reliably displayed.
[Additional Item 4]
The antitheft device according to item 3, further comprising connection disconnection means for disconnecting the connection with the alarm device when the article information receiving means receives the article information.

  As a result, the communication connection means can immediately establish communication connection with another alarm device. Therefore, even if a plurality of customers try to take out a plurality of items, or a single customer tries to take out a plurality of items, it can be connected to a plurality of alarm devices attached to these items. The article information can be received from these alarm devices.

[Additional Item 5]
Receiving intensity measuring means for receiving the measurement signal transmitted from the alarm device and measuring the receiving intensity,
The anti-theft according to claim 3 or 4, wherein the display means displays the received intensity measured by the received intensity measuring means in association with the article information received by the article information receiving means. apparatus.

[Additional Item 6]
A reception intensity measuring means for receiving the measurement signal transmitted from the alarm device and measuring the reception intensity;
An alarm means for issuing an alarm,
The antitheft device according to any one of appendices 3 to 5, wherein the alarm means changes the alarm according to the reception intensity measured by the reception intensity measurement means.

[Additional Item 7]
Image input means for inputting infrared rays emitted from the alarm device as an image;
Infrared image means for performing infrared image processing so that an image input by the image input means is visible under infrared rays,
The antitheft device according to any one of appendix 3 to appendix 6, wherein the display unit displays an image obtained by performing infrared image processing by the infrared image processing unit.

[Appendix 8]
Storage means for storing the identification information received by the identification information receiving means and the article information received by the article information receiving means;
Article information input means for inputting article identification information provided on the article and corresponding article information;
The antitheft device according to any one of appendices 3 to 7, wherein the display unit erases the same article information as the article information input by the article information input unit.

[Additional Item 9]
A reception intensity measuring means for receiving the measurement signal transmitted from the alarm device and measuring the reception intensity;
Identification information extracting means for extracting the identification information corresponding to the largest received signal among the received signals measured by the received signal measuring means,
The antitheft device according to any one of appendices 3 to 8, wherein the display unit erases article information corresponding to the identification information extracted by the identification information extraction unit.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, programs for realizing the functions of the gate anti-theft device 1, the article tag 2, the portable anti-theft device 3, the cash register anti-theft device 4 and the blind spot anti-theft device 6 are recorded on a computer-readable recording medium. Various programs may be performed by causing the computer system to read and execute the program recorded on the recording medium. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible disk, a magneto-optical disk, a portable medium such as a ROM, a CD-ROM, and a DVD, and a hard disk built in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

Moreover, in this embodiment, although the article | item in a shop is made into the antitheft object, it is not restricted to this, The antitheft object can be changed suitably. For example, it may be a stock item in a bag yard or a document prohibited from being taken out.
In this embodiment, the communication method is short-range wireless communication. However, the communication method is not limited to this, and can be changed as appropriate. Moreover, even if it is not Bluetooth (registered trademark), it can be applied to other communication standards.
In this embodiment, the profile is changed so that the gate anti-theft device 1, the portable anti-theft device 3, the cash register anti-theft device 4 and the blind spot anti-theft device 6 do not pair with each other. The same blog file may be used.

1 Anti-theft device for gate (Anti-theft device)
2 Article tag (alarm device)
10a Main control unit (article information receiving means, communication searching means)
10d Communication connection processing unit (communication connection means)
10c Alarm instruction transmission unit (alarm instruction transmission means)
10e Communication disconnection processing unit (connection disconnecting means)
10f Measurement signal determination processing unit (determination means)
10g Article information transmission instruction transmission section (Article information transmission instruction transmission means)
11 Display section (display means)
14 Storage unit (article information storage means)
20a Main control unit (identification information transmission means, measurement signal transmission means)
20d Article information transmitting unit (article information transmitting means)
24 storage unit (identification information storage means)
26 Alarm section (alarm means)
100 anti-theft system

Claims (11)

An anti-theft system comprising an alarm device attached to an article, and an anti-theft device that communicates with the alarm device by Bluetooth (registered trademark) system and prevents the theft of the article,
The alarm device is
Identification information storage means for storing identification information for identifying itself;
Identification information transmitting means for transmitting the identification information stored in the identification information storage means;
An alarm means for issuing an alarm when receiving an alarm instruction transmitted from the alarm instruction transmitting means of the anti-theft device,
The anti-theft device is
Communication search means for detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmission means;
When the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, communication connection means for communication connection to the alarm device;
When the communication connection means is connected to the alarm device, an alarm instruction transmission means for transmitting the alarm instruction to the alarm device;
When the alarm instruction transmitting means transmits an alarm instruction, the alarm instruction transmitting means comprises a connection disconnecting means for disconnecting communication connection with the alarm device,
The communication connection means, when the connection disconnection means disconnects the communication connection with the alarm device, when the identification information of another alarm device detected by the communication search means matches the identification information stored in advance, An anti-theft system characterized in that communication connection is made to the other alarm device. The alarm device is
Comprising a measurement signal transmitting means for transmitting a measurement signal for measuring the signal strength;
The anti-theft device is
A determination means for determining whether or not the reception intensity of the measurement signal transmitted by the measurement signal transmission means exceeds a threshold;
The communication connection when the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, and when the determination means determines that the reception intensity exceeds a threshold value 2. The anti-theft system according to claim 1, wherein means is connected to the alarm device in communication, and the alarm instruction transmitting means transmits the alarm instruction to the alarm device. The alarm device includes article information transmission means for transmitting article information stored in advance when receiving the article information transmission instruction transmitted from the article information transmission instruction transmission means of the anti-theft device,
The anti-theft device is
Article information transmission instruction transmission means for transmitting the article information transmission instruction to the alarm device when the communication connection means is in communication connection with the alarm device;
Article information receiving means for receiving article information transmitted from the article information transmitting means;
The antitheft system according to claim 2, further comprising display means for displaying the article information received by the article information receiving means.   When the determination unit determines that the reception strength does not exceed the threshold, the article information transmission instruction transmission unit transmits the article information transmission instruction, and the article information reception unit includes the article information reception unit. 4. The anti-theft system according to claim 3, wherein the alarm instruction transmission means disconnects the communication connection with the alarm device after transmitting the alarm instruction without transmitting the alarm instruction. The anti-theft device is
An article information storage means for storing article information transmitted from the article information transmission means in association with identification information of the alarm device detected by the communication search means;
When the communication connection means is communicatively connected to the alarm device, the article information storage means stores the article information in association with the identification information,
After the connection disconnecting means disconnects the communication connection with the alarm device,
The communication connection means communicates with the alarm device when the identification information of the alarm device detected by the communication search means matches the identification information associated with the article information stored in the article information storage means. The anti-theft system according to claim 4, wherein the anti-theft system is not connected. In the case where the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, and the determination means determines that the reception intensity exceeds a threshold,
When the identification information of the alarm device detected by the communication search means matches the identification information stored in the article information storage means,
The display means displays the article information stored in the article information storage means and associated with the identification information without the article information transmission instruction transmitting means transmitting the article information transmission instruction. The antitheft system according to claim 5. An anti-theft method in an anti-theft system comprising an alarm device attached to an article and an anti-theft device that communicates with the alarm device by Bluetooth (registered trademark) system to prevent the theft of the article,
An identification information transmission step in which the identification information storage means of the alarm device transmits the identification information stored in order to identify the identification information storage means of the alarm device;
A communication search step of detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmitting unit, the communication search means of the anti-theft device;
When the communication connection means of the antitheft device receives the identification information of the alarm device detected in the communication search step, and communicates with the alarm device when the identification information matches the previously stored identification information A communication connection step to connect;
When the alarm instruction transmission means of the antitheft device is connected to the alarm device in the communication connection step, an alarm instruction transmission step of transmitting an alarm instruction to the alarm device;
An alarm step in which the alarm means of the alarm device receives the alarm instruction transmitted in the alarm instruction transmission step and issues an alarm;
When the alarm instruction is transmitted in the alarm instruction transmitting step, the connection disconnecting step of disconnecting the communication connection with the alarm device when the anti-theft device connection disconnecting means,
When the communication connection means of the antitheft device disconnects the communication connection with the alarm device in the connection disconnection step, the identification information in which the identification information of the other alarm device detected by the communication search step is stored in advance And a communication connection step for communication connection with the other alarm device when the same is detected. An anti-theft program in an anti-theft system comprising an alarm device attached to an article, and an anti-theft device that communicates with the alarm device by Bluetooth (registered trademark) system to prevent the theft of the article,
An identification information transmission step in which the identification information storage means of the alarm device transmits the identification information stored in order to identify the identification information storage means of the alarm device;
A communication search step of detecting the alarm device by searching for the alarm device and receiving the identification information transmitted from the identification information transmitting unit, the communication search means of the anti-theft device;
When the communication connection means of the antitheft device receives the identification information of the alarm device detected in the communication search step, and communicates with the alarm device when the identification information matches the previously stored identification information A communication connection step to connect;
When the alarm instruction transmission means of the antitheft device is connected to the alarm device in the communication connection step, an alarm instruction transmission step of transmitting an alarm instruction to the alarm device;
An alarm step in which the alarm means of the alarm device receives the alarm instruction transmitted in the alarm instruction transmission step and issues an alarm;
When the alarm instruction is transmitted in the alarm instruction transmitting step, the connection disconnecting step of disconnecting the communication connection with the alarm device when the anti-theft device connection disconnecting means,
When the communication connection means of the antitheft device disconnects the communication connection with the alarm device in the connection disconnection step, the identification information in which the identification information of the other alarm device detected by the communication search step is stored in advance The anti-theft program for executing, in the anti-theft system, another communication connection step for establishing communication connection with the other alarm device when it matches. An anti-theft device that communicates with an alarm device attached to an article by a Bluetooth (registered trademark) system to prevent the theft of the article,
Communication search means for detecting the alarm device by searching for the alarm device and receiving the identification information stored in the identification information storage means of the alarm device and transmitted from the identification information transmission means of the alarm device;
When the identification information of the alarm device detected by the communication search means matches the identification information stored in advance, communication connection means for communication connection to the alarm device;
When the communication connection means communicates with the alarm device, an alarm instruction transmission means for transmitting an alarm instruction to the alarm device and causing the alarm means of the alarm device to issue an alarm;
When the alarm instruction transmitting means transmits an alarm instruction, the alarm instruction transmitting means comprises a connection disconnecting means for disconnecting communication connection with the alarm device,
The communication connection means, when the connection disconnection means disconnects the communication connection with the alarm device, when the identification information of another alarm device detected by the communication search means matches the identification information stored in advance, An anti-theft device, which is connected to the other alarm device by communication. An anti-theft method in an anti-theft device for communicating with an alarm device attached to an article by Bluetooth (registered trademark) system to prevent the theft of the article,
The communication device of the antitheft device searches for the alarm device and receives the identification information stored in the identification information storage unit of the alarm device and transmitted from the identification information transmission unit of the alarm device. A communication search step for detecting
A communication connection step for communication connection to the alarm device when the communication connection means of the anti-theft device matches the identification information stored in advance in the identification information of the alarm device detected in the communication search step;
When the alarm instruction transmission means of the anti-theft device is connected to the alarm device in the communication connection step, an alarm instruction transmission step of transmitting an alarm instruction to issue an alarm from the alarm unit of the alarm device;
When an alarm instruction is transmitted in the alarm instruction transmission step, a connection disconnecting step in which the connection disconnecting means of the antitheft device disconnects the communication connection with the alarm device;
When the communication connection means of the antitheft device disconnects the communication connection with the alarm device in the connection disconnection step, the identification information in which the identification information of the other alarm device detected by the communication search step is stored in advance And a communication connection step for communication connection with the other alarm device when the same is detected. An anti-theft program in an anti-theft device for communicating with an alarm device attached to an article by Bluetooth (registered trademark) system to prevent the theft of the article,
The communication device of the antitheft device searches for the alarm device and receives the identification information stored in the identification information storage unit of the alarm device and transmitted from the identification information transmission unit of the alarm device. A communication search step for detecting
A communication connection step for communication connection to the alarm device when the communication connection means of the anti-theft device matches the identification information stored in advance in the identification information of the alarm device detected in the communication search step;
When the alarm instruction transmission means of the anti-theft device is connected to the alarm device in the communication connection step, an alarm instruction transmission step of transmitting an alarm instruction to issue an alarm from the alarm unit of the alarm device;
When an alarm instruction is transmitted in the alarm instruction transmission step, a connection disconnecting step in which the connection disconnecting means of the antitheft device disconnects the communication connection with the alarm device;
When the communication connection means of the antitheft device disconnects the communication connection with the alarm device in the connection disconnection step, the identification information in which the identification information of the other alarm device detected by the communication search step is stored in advance The anti-theft program for causing the anti-theft device to execute another communication connection step for making a communication connection with the other alarm device when the two match.

Images