JP2011175348A - Radio tag security system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio tag security system that prevents illegal removal of an important article even if a radio tag is covered by a material that blocks electromagnetic waves. <P>SOLUTION: The radio tag security system includes a rack type monitoring apparatus, a registering radio tag reader/writer, a gate type radio tag reader/writer having a human sensor, a management server having a management DB, and an alarm issuing means. If the management DB stores an ID whose "removal flag" and "registration flag" are "OFF" when a person passing through a gate is detected by the human sensor, the alarm issuing means 14 issues an alarm. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a security system that prevents unauthorized removal of important items using a wireless tag.

  A wireless tag may be used in a system for monitoring unauthorized removal of important items. For example, an RFID tag reader / writer antenna is installed on the product shelf, the product with the wireless tag attached is placed in this shelf, and the communication time between the product shelf, the cash register, and the wireless tag at the exit is managed in a database for unauthorized take-out. Has been proposed (for example, Patent Document 1).

JP 2004-240767 A

  However, the technique described in Patent Document 1 has a problem in that it can be taken out illegally easily by covering the wireless tag itself with a material that shields electromagnetic waves.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless tag security system that can prevent unauthorized removal of important articles even when the wireless tag is covered with a material that shields electromagnetic waves.

  The present invention relates to a shelf type monitoring apparatus having a wireless tag reader / writer for monitoring the presence of a wireless tag, a registered wireless tag reader / writer that is a wireless tag reader / writer for taking out and registering wireless tags, and an input / output terminal connected to the registered wireless tag reader / writer. A management server having a registration means, a gate-type wireless tag reader / writer provided with a human sensor, an alarm issuing means for issuing an alarm, and a management database for managing the presence / absence of each wireless tag and the presence / absence of take-out registration And a wireless tag presence / absence confirmation unit that stores the presence / absence of the wireless tag confirmed by the shelf monitoring device in the management database, and a take-out registration in which the management server stores the take-out registration registered from the registration unit in the management database The storage means and the management server detect people and the management database A fraudulent take-out alarm means for instructing the alarm alarm means to issue an alarm when it is determined that there is a wireless tag that is not registered and is stored in the shelf-type monitoring device. A wireless tag security system is provided.

  According to the present invention, even if the wireless tag is covered with a material that shields electromagnetic waves, there is an effect that it is possible to prevent unauthorized take-out of important articles.

It is a schematic diagram showing the structure of a wireless tag security system. It is a figure which shows the structure of a wireless tag and a wireless tag reader / writer. It is a figure which shows the structure of management DB. It is a flowchart of registration of a take-out flag by the management server. It is a flowchart of the unauthorized take-out detection by the management server.

  Hereinafter, an embodiment of a wireless tag security system according to the present invention will be described in detail with reference to the drawings. Note that in the present invention, the wireless tag reader / writer includes a device that reads information from a wireless tag, a device that writes information to the wireless tag, or a device that reads and writes information. The wireless tag means a storage medium capable of wireless communication, and usually includes an antenna and an IC chip. The wireless tag may further have a calculation function, and is desirably a portable size, but may be a minute one. The wireless tag is sometimes referred to as RFID (Radio Frequency Identification).

  FIG. 1 is a schematic diagram showing the configuration of the RFID tag security system of this embodiment. As shown in FIG. 1, the wireless tag security system includes a shelf-type monitoring device 10 having an antenna 10a of a wireless tag reader / writer, registration means for takeout registration, a gate-type wireless tag reader / writer 12, and a management database. The management server 13 which is a server provided with a certain management database 13a, and the alarm notification means 14 are provided.

  The registration means includes a registered wireless tag reader / writer 11b, which is a wireless tag reader / writer, and an input / output terminal 11a connected to the registered wireless tag reader / writer 11b.

  The shelf-type monitoring device 10, the registered wireless tag reader / writer 11b, the input / output terminal 11a, and the alarm notification means 14 are installed inside the same management area 15 physically partitioned by a wall or the like, and are used as a gate-type wireless tag reader / writer. 12 is installed at the entrance of the management area 15.

  The shelf-type monitoring device 10 includes an antenna 10a for communicating with a wireless tag 110 attached to an article placed on the shelf, and a reader / writer main body 10b. The reader / writer main body 10 b is connected to the management server 13.

  The registered wireless tag reader / writer 11b includes an antenna and a reader / writer main body. The registered wireless tag reader / writer 11b is connected to the input / output terminal 11a. The input / output terminal 11 a is connected to the management server 13.

  The gate-type wireless tag reader / writer 12 includes an antenna 12a, a human sensor 12c, and a reader / writer main body 12b on each of a pair of left and right gates. The human sensor 12c is a sensor that is turned on when a person approaches or passes through a gate. For example, an infrared sensor can be used. The gate type wireless tag reader / writer 12 is connected to the management server 13.

  The alarm issuing unit 14 is configured by a buzzer, an alarm light, or the like, and issues an alarm according to an instruction from the management server 13.

  FIG. 2 is a diagram illustrating the configuration of the wireless tag 110 and the wireless tag reader / writer 120. The shelf-type monitoring device 10, the registered wireless tag reader / writer 11b, and the gate-type wireless tag reader / writer 12 have a common configuration with respect to the antenna and the reader / writer main body.

  As shown in FIG. 2, the wireless tag 110 includes a memory 111 that is a storage device, a wireless tag control unit 112 that reads / writes data from / to the memory 111, and rectifies and stabilizes the received modulated electromagnetic wave. A power generation unit 115 that supplies power, a modulation unit 113 that modulates data transmitted from the wireless tag control unit 112 and transmits the modulated data to the wireless tag antenna 116, and demodulates the received modulated electromagnetic wave and transmits the modulated electromagnetic wave to the wireless tag control unit 112 And a demodulator 114.

  The wireless tag reader / writer 120 of this embodiment includes an antenna 121 that transmits and receives signals to and from the wireless tag 110, and a reader / writer main body 120a that processes the signals.

  The reader / writer main body 120a has a reader / writer control unit 126 that controls communication with the wireless tag 110 and hardware, a modulation unit 122 that modulates data transmitted from the reader / writer control unit 126, and amplifies the modulated signal. A transmission amplifier 123 that transmits to the antenna 121 via the circulator 131, a reception amplifier 124 that amplifies the modulated electromagnetic wave received from the antenna 121 via the circulator 131, a demodulation unit 125 that demodulates the received modulation signal, and a personal computer, for example. And an interface 130 for transmitting and receiving data. The reader / writer control unit 126 includes a CPU 127 and a ROM 128 and a RAM 129 for storing data.

  The management server 13 includes wireless tag presence / absence confirmation means for storing the presence / absence of the wireless tag 110 confirmed by the shelf-type monitoring apparatus 10 as a “take-out flag” in the management database 13a.

  The management server 13 includes take-out registration storage means for storing the take-out registration registered by the registration means in the management database 13a as a “registration flag”.

  FIG. 3 is a diagram showing the configuration of the management database 13a. As shown in FIG. 3, the management database 13 a is set to “ON” when “ID” uniquely assigned to each wireless tag 110 is communicable, that is, when the wireless tag 110 is present in the shelf-type monitoring device 10. When communication is not possible, that is, when the wireless tag 110 is not present in the shelf-type monitoring device 10, the “take-out flag” is set to “OFF”, the take-out flag is set to “ON”, and the non-register is set to “OFF”. “Registration flag” is stored.

  In the example of FIG. 3, since the wireless tag 110 with ID “T0001” exists in the shelf-type monitoring apparatus 10, the “take-out flag” is “ON”, and the take-out has not yet been registered, so “registration” is performed. “Flag” is “OFF”.

  Since the wireless tag 110 with ID “T0002” does not exist in the shelf-type monitoring device 10, the “take-out flag” is “OFF”, and the take-out is registered, so the “registration flag” is “ON”. It has become. That is, the wireless tag 110 with ID “T0002” has not been illegally taken out.

  Since the wireless tag 110 with ID “T0003” does not exist in the shelf-type monitoring apparatus 10, the “take-out flag” is “OFF”, and since the take-out is not registered, the “registration flag” is “OFF”. It has become. That is, the wireless tag 110 with ID “T0003” may be taken out illegally.

  In the management database 13a, the wireless tag 110 arranged in advance on the shelf-type monitoring device 10 is registered by the management server 13 via the registered wireless tag reader / writer 11b and the input / output terminal 11a.

  FIG. 4 is a flowchart of registration of a take-out flag by the management server 13 which is a wireless tag existence confirmation means. As shown in FIG. 4, in step 401, when the management server 13 instructs the shelf type monitoring device 10 to communicate with the wireless tag 110, the shelf type monitoring device 10 sequentially transmits and receives signals to and from the wireless tag 110.

  In step 402, the management server 13 determines whether communication with the wireless tag 110 has been established. If communication is not established, the management server 13 sets the “take-out flag” of the management database 13 a to “OFF” in step 403, and if communication is established, sets the “take-out flag” of the management database 13 a to “ON” in step 404. To.

  The management server 13 performs this take-out flag registration operation at predetermined time intervals, for example, every 30 seconds.

  When the management server 13 detects that a person is detected by the human sensor 12c and that there is a wireless tag that is not registered in the management database 13a and is not present in the shelf-type monitoring device 10, an alarm is issued. An unauthorized take-out alarm means for instructing the alarm means 14 to issue an alarm is provided.

  FIG. 5 is a flowchart of unauthorized take-out detection by the management server 13, which is an unauthorized take-out alarm unit. As shown in FIG. 5, in step 501, the management server 13 instructs the gate type wireless tag reader / writer 12 to transmit / receive a signal to / from the wireless tag 110. In accordance with this instruction, the gate-type wireless tag reader / writer 12 attempts to transmit / receive a signal to / from the wireless tag 110 and transmits the transmission / reception result to the management server 13. The management server 13 determines whether or not the wireless tag 110 has been detected, and if detected, the process proceeds to step 503, and if not detected, the process proceeds to step 502.

  In step 503, the management server 13 inquires the management database 13a for the ID of the received wireless tag 110 as a key, and reads the data.

  In step 504, the management server 13 determines whether the “take-out flag” is “OFF”. The management server 13 proceeds to step 505 if the “take-out flag” is “OFF”, and returns to step 501 if it is not “OFF”.

  In step 505, the management server 13 determines whether the “registration flag” is “OFF”. If the “registration flag” is “OFF”, the management server 13 proceeds to step 506 and instructs the alarm notification means 14 to issue an alarm. If it is not “OFF”, the management server 13 returns to step 501.

  That is, when the wireless tag 110 is detected by the gate-type wireless tag reader / writer 12, the management server 13 notifies the alarm notification means 14 when the “take-out flag” and “registration flag” related to the wireless tag are both “OFF”. Instruct the alarm to be issued.

  In step 502, the management server 13 determines whether or not the human sensor 12c is “ON”. The management server 13 proceeds to step 507 if the human sensor 12c is “ON”, and returns to step 501 if it is not “ON”.

  In step 507, the management server 13 is searched for an ID whose “take-out flag” and “registration flag” are both “OFF”. If the management server 13 has an ID whose “take-out flag” and “registration flag” are both “OFF”, in step 506, the alarm notification means 14 is instructed to issue an alarm, and the “take-out flag” and “registration” are registered. If there is no ID whose flag is “OFF”, the process returns to step 501.

  That is, the management server 13 determines that both the “take-out flag” and the “registration flag” are “OFF” even though the human sensor 12c detects that a person has been detected or that a person has passed through the gate. If a certain ID exists, in step 506, the alarm issuing means 14 is instructed to issue an alarm.

  As described above, the wireless tag security system according to the present embodiment has the shelf-type monitoring device 10, the registered wireless tag reader / writer 11b, the gate-type wireless tag reader / writer 12 having the human sensor 12c, and the management database 13a. The server 13 and the alarm issue means 14 are provided. Even though it is detected by the human sensor 12c that the person has been detected or the person has passed the gate, both the “take-out flag” and the “registration flag” are “OFF” in the management database 13a. When the ID exists, the alarm issuing unit 14 is instructed to issue an alarm. Therefore, even if the wireless tag 110 is covered with a material that shields electromagnetic waves, there is an effect that it is possible to prevent unauthorized taking of important articles.

10: shelf-type monitoring device,
11b: Registered wireless tag reader / writer,
12: Gate type wireless tag reader / writer,
12c: human sensor
13a: Management DB,
13: Management server,
14: Alarm issuing means.

Claims (5)

A shelf-type monitoring device having a wireless tag reader / writer for monitoring the presence of a wireless tag;
A registration unit comprising a registered wireless tag reader / writer, which is a wireless tag reader / writer for taking out the wireless tag, and an input / output terminal connected to the registered wireless tag reader / writer;
A gate type wireless tag reader / writer equipped with a human sensor;
An alarm issuing means for issuing an alarm;
A management server having a management database for managing presence / absence and presence / absence of registration for each wireless tag;
Wireless tag presence / absence confirmation means for storing in the management database the presence / absence of the wireless tag confirmed by the management server by the shelf type monitoring device;
The management server stores a take-out registration registered from the registration means in the management database;
When the management server detects that the human sensor detects a person and the take-out is not registered in the management database and it is determined that there is the wireless tag stored in the shelf-type monitoring device, Unauthorized take-out alarm means for instructing the alarm notification means to issue an alarm;
A wireless tag security system comprising: The unauthorized take-out alarm means is:
When the management server determines that no take-out is stored in the management database for the radio tag read by the gate-type radio tag reader / writer, it instructs the alarm issue means to issue an alarm. The wireless tag security system according to claim 1, wherein: At least the shelf-type monitoring device, the registration unit, and the alarm notification unit are installed in the same management area physically partitioned,
The gate type RFID tag reader / writer is installed at the entrance / exit in the management section,
The wireless tag security system according to claim 1.   2. The wireless tag security system according to claim 1, wherein the wireless tag presence / absence confirmation unit stores the presence / absence of the wireless tag confirmed by the shelf-type monitoring device at predetermined time intervals in the management database. The management database is
2. The wireless tag security system according to claim 1, wherein for each wireless tag, presence / absence and presence / absence of take-out registration are managed by a flag.

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