JP4295582B2 - Entrance security system - Google Patents

Description

  The present invention relates to an entrance security system for restricting entrance to or entry into a building in a corporate laboratory, a building such as an apartment or a hotel, each floor, each room, or each facility.

2. Description of the Related Art Conventionally, security is ensured by restricting entry in a corporate laboratory, a development room in the laboratory, and each room or facility such as a hotel so that only a specific person can enter. For example, the following is known as a security system for managing the entrance of each room in a hotel. A room key that stores information such as a room number and is attached with a readable / writable RFID tag, and an RFID reader installed in each room in the hotel and / or a room door to input / output information to / from the RFID tag And a database that stores information about each room in the hotel, each RFID reader and database, and a server that manages each room in the hotel. The RFID reader reads the room number from the RFID tag and stores it in the database. A device that unlocks or locks a room key by checking with a registered room number is known (for example, see Patent Document 1).
JP 2003-132435 A

  However, as described above, in a system that collates information such as a room number using a database in the management server, all RFID readers need to be connected to the network. From the viewpoint of preventing information leakage, it is preferable to construct a network of a different system from the network normally used for connection to the outside. When data communication is unavoidably performed on a network that is normally used, it is necessary to apply strict security to the management server.

  In addition, in the configuration in which the RFID reader and the database are connected to the network, when updating the data in the database for collation, it is only necessary to update the data in the database, but each RFID reader is independent, When not connected to the network, since data for collation is stored in each RFID reader, the data stored in each RFID reader needs to be updated by some method.

  That is, when a security system is newly introduced, in addition to the cost of installing RFID readers that control gates for restricting entry into each room, a network is required, and the network is If it is not constructed, it takes time to update the data of the RFID reader.

  The present invention has been made in view of the above circumstances, and the object thereof is not required to connect to a network, can save the trouble of updating the data of the wireless tag reader, and is necessary for verification stored in the wireless tag reader. It is to provide an entrance security system that makes it difficult to counterfeit data.

  The present invention relates to information stored in a memory in response to a wireless inquiry command in a wireless tag reader installed at a predetermined place such as an entrance of a building, an entrance of each floor in the building, and an entrance of each room. Unique identification information such as RFID for performing wireless communication in response to an inquiry command from a wireless tag capable of wireless transmission, name, employee number, affiliation, date of birth, expiration date, development room number User information about the user, such as each piece of information, and additional information calculated based on, for example, fixed value information that is a fixed value assigned corresponding to the development room, and the obtained identification information, user information and A constant value is calculated based on the additional information, and it is determined whether the calculated constant value is within the stored constant value. Is intended to release the entry limit of the location has been the room.

  ADVANTAGE OF THE INVENTION According to this invention, it is not necessary to connect to a network, the effort which updates the data of a wireless tag reader can be saved, and the room security system which cannot forge the data required for the collation memorize | stored in a wireless tag reader can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram schematically showing a cross section of a building 100 to which the present invention is applied. As shown in FIG. 1, the building 100 is provided with one initial gate for entering. After passing through this gate, it becomes an elevator room and can be moved from the first floor to the fourth floor by the elevator EV in this elevator room. In addition, the elevator room on each floor is provided with a gate for entering a passage having a gate for entering the development rooms 1A to 1C, 2A to 2C, 3A to 3C, and 4A to 4C on each floor. Yes. Each of these gates is provided with a wireless tag reader. The RFID tag reader ENT at the first entrance gate, the RFID tag readers 1f to 4f at the gates of each floor for entering the passage, and the RFID tag readers 1a to 1c, 2a to the gates for entering the development rooms. 2c, 3a-3c, 4a-4c are provided. Each of the RFID tag readers ENT, 1f to 4f and 1a to 4c can lock the gate by an electronic lock, and is normally locked so that the gate cannot be opened. Further, a sensor 1 for detecting that a person has passed through the gate is disposed in the building 100 of the door at the first entrance. Although not shown in FIG. 1, sensors for detecting that a person has passed through the gate are also arranged at predetermined positions in the other gates described above.

  Next, the wireless tag readers ENT, 1f to 4f and 1a to 4c arranged in the building 100 will be described. The wireless tag readers ENT, 1f to 4f and 1a to 4c have the same external appearance and the same configuration except for some data stored in the storage means. The tag reader ENT will be described as an example.

  FIG. 2 is a diagram showing an external appearance of the wireless tag reader ENT, and FIG. 3 is a block diagram showing a main configuration of the wireless tag reader ENT. As shown in FIG. 2, the wireless tag reader ENT is provided with a display unit 2, a scanner unit 3, and an audio output port 4. The display unit 2 displays necessary information for the user. The scanner unit 3 indicates a position where the wireless tag 5 is held in order to perform wireless communication with the wireless tag 5 described later. The audio output port 4 is provided for outputting audio generated in the wireless tag reader ENT to the outside.

  The wireless tag reader ENT includes a CPU 11, a ROM 12, a RAM 13 as a storage means, a display control unit 14, a display unit 2, an audio control unit 15, an audio output unit 16, a modulation unit 17, a transmission amplifier 18, an antenna 19, a demodulation unit 20, and a reception. It comprises an amplifier 21, a clock unit 22, an interface 23, an electronic lock unit 24, an I / O port 25, a sensor 1, and the like. The CPU 11, ROM 12, RAM 13, display control unit 14, audio control unit 15, modulation unit 17, demodulation unit 20, clock unit 22, interface 23, and I / O port 25 are connected via a bus line 26.

  The CPU 11 generally controls the wireless tag reader ENT by executing a program stored in the ROM 12. The ROM 12 stores a control program for realizing various functions of the wireless tag reader ENT executed by the CPU 11. The ROM 12 stores a function F. The function F is, for example, a hash function, and is a function that generates a constant value based on RFID data, user data, and additional data described later. This function F is defined as F (RFID data, user data, additional data) = a constant value.

  The RAM 13 stores a predetermined number of constant values. Since the constant value stored in the RAM 13 differs depending on each of the RFID tag readers ENT, 1f to 4f, 1a to 4c, it will be described with reference to FIGS. FIG. 4 is a diagram showing fixed values of different values assigned to all the development rooms 1A to 4C in the building 100. As shown in FIG. FIG. 5 is a diagram showing constant values stored in the RAM 13 of the wireless tag reader ENT. As the constant value stored in the RAM 13, a constant value assigned to all the development rooms in the building 100 is stored. FIG. 6 is a diagram showing fixed values stored in the RAMs 13 of the wireless tag readers 1f to 4f. As the constant value stored in each RAM 13, a constant value assigned to each development room on the floor where the wireless tag readers 1f to 4f are installed is stored. FIG. 7 is a diagram showing the correspondence between the constant values stored in the RAMs 13 of the wireless tag readers 1a to 4c. The constant value stored in each RAM 13 is a constant value assigned to each development room.

  The display control unit 14 controls display on the display unit 2 under the control of the CPU 11. For example, in the standby state, the display control unit 14 performs control to display a message “Please hold the card in the lower frame” on the display unit 2 as shown in FIG.

  The voice control unit 15 controls the voice output of the voice output unit 16 under the control of the CPU 11. For example, the voice control unit 15 outputs a buzzer sound once with a small sound as an OK sound when data reading is performed, and continuously outputs a buzzer sound with a loud sound as an error sound when data reading is not performed. The audio output unit 16 is controlled to output.

The modulation unit 17 modulates transmission data to be transmitted, and the transmission amplifier 18 amplifies the modulated radio wave and radiates it from the antenna 19. The transmission data is, for example, an inquiry command for making an inquiry to a wireless tag, which will be described later, or a non-response command that is a command for setting the wireless tag to no response. The reception amplifier 21 amplifies the radio wave received by the antenna 19 and the demodulation unit 20 demodulates the amplified reception radio wave.
The clock unit 22 always performs a timekeeping operation, and generates time data indicating the current time including the date that is date information.

  The interface 23 is used for connection with the electronic lock unit 24. The electronic lock unit 24 locks the gate of the first entrance to the building 100, the gate of the entrance to the passage of each floor, and the gate of the entrance to each development room. As described above, each of these gates is normally locked to restrict entry into each gate (room entry restriction means). Each gate is configured to unlock the gate based on the control of the CPU 11.

  The I / O port 25 is used for connection with the sensor 1. The sensor 1 is used to detect whether a person has passed through the gate. Therefore, the sensor is arranged at a predetermined position so that the passage of a person can be detected on the opposite side of the entrance gate from the entrance side. Note that a sensor that detects that the gate is closed may be used instead of the sensor arranged in this way.

Next, the wireless tag 5 used for releasing the gate lock of the wireless tag readers ENT, 1f to 4f and 1a to 4c configured as described above will be described.
FIG. 5 is a diagram showing the appearance of the card 5a in which the wireless tag 5 is embedded. A company name, name, affiliation, development room name, expiration date, and the like are printed on the surface of the card 5a as shown in the figure.

  FIG. 6 is a block diagram showing a main configuration of the wireless tag 5 embedded in the card 5a. As shown in the figure, the wireless tag 5 is a component in which a tag antenna 51 and an LSI chip 52 capable of transmitting and receiving are integrally formed on a substrate. The tag antenna 51 is formed of a loop coil or the like formed in a rectangular shape. The LSI chip 52 includes a power generation unit 53, a modulation unit 54, a demodulation unit 55, a control unit 56, a memory 57, and the like. The power generator 53 supplies power to each part of the LSI chip 52 by rectifying and stabilizing the modulated radio wave received by the tag antenna 51. The demodulator 55 demodulates the modulated radio wave and sends it to the controller 56. The modulation unit 54 modulates the data sent from the control unit 56 and sends it to the tag antenna 51. When the data demodulated by the demodulation unit 55 is an inquiry command, the control unit 56 sends the data stored in the memory 57 to the modulation unit 54 as read response data. The memory 57 has an RFID area 57a for storing a unique RFID (Radio Frequency Identification) set by the manufacturer at the manufacturing stage of the wireless tag 5, and a user to which the user can write arbitrary data. An area 57b and an additional area 57c which is an area for writing additional data.

  In the user area 57b, in addition to each area for storing personal information of the person who owns the card 5a, employee number, affiliation, date of birth, an expiration date for storing an expiration date that is a period during which entry is permitted A development room number area is provided for storing a development room number indicating an area and a development room permitted to enter. Further, additional data calculated by the function G is stored in the additional area 57c. The function G is a function for generating additional data based on RFID data, user data, and a fixed value corresponding to a development room permitted to enter the room. This function G is defined as G (FRID data, user data, constant value) = additional data. It should be noted that the constant value used for the calculation in the function G, the additional data generated by the function G, and the constant value generated by inputting the RFID data and the user data to the above-described function F seem to match. It has become.

  With such a configuration, the wireless tag readers ENT, 1f to 4f and 1a to 4c modulate the inquiry command into radio waves and transmit them from the antenna 19. On the other hand, when the wireless tag 5 is held over the scanner unit 3 of the wireless tag reader by the user, the tag antenna 51 receives radio waves of the inquiry command, whereby power is supplied from the power generation unit 53 to each unit, and the control unit 56 In operation, each data in the memory 57 is read. Then, response data including RFID data, user data, and additional data is modulated by the modulation unit 54 into a form suitable for wireless transmission, and then transmitted from the tag antenna 51 as radio waves.

  Next, processing executed by the CPU 11 of the wireless tag reader ENT when the card 5a in which the wireless tag 5 is embedded is held over the scanner unit 3 of the wireless tag reader ENT will be described with reference to FIG.

  In the standby state, the CPU 11 controls the display control unit 14 to display a standby message on the display unit 2 and transmit an inquiry command (ST1). In this standby state, the CPU 11 determines whether or not response data including RFID data, user data, and additional data for the inquiry command has been received (ST2).

  If the CPU 11 does not determine that the response data has been received, the CPU 11 continues the standby state. If it determines that the response data has been received, the CPU 11 stores the response data in a predetermined area of the RAM 13 (ST3, acquisition means).

  Subsequently, the CPU 11 inputs the response data stored in the RAM 13 to the function F to obtain the calculation result Y (ST4, constant value information calculation means). That is, the CPU 11 obtains a calculation result Y that is a constant value obtained by inputting RFID data, user data, and additional data to the function F. Then, the CPU 11 determines whether or not the same constant value as the calculation result Y is within the constant value stored in the RAM 13 (ST5, determination means).

  If the CPU 11 determines in step ST5 that the calculation result Y of the function F is not within the constant value stored in the RAM 13, the CPU 11 controls the display control unit 14 to display an error message on the display unit 2 (ST6). ). Then, the CPU 11 controls the sound control unit 15 to output a buzzer sound continuously for a predetermined time from the sound output unit 16 as an error sound with a loud sound (ST7). And a process returns to the standby state of step ST1.

  If the CPU 11 determines in step ST5 that the calculation result Y of the function F is within the constant value stored in the RAM 13, the CPU 11 controls the display control unit 14 and displays a room entry permission message on the display unit 2 (ST8). ). At substantially the same time, the CPU 11 controls the sound control unit 15 and outputs a buzzer sound once as a sound from the sound output unit 16 as an OK sound (ST9). Subsequently, the CPU 11 controls the electronic lock unit 24 to release the gate lock (ST10, room entry restriction releasing means). Then, the CPU 11 monitors the output from the sensor 1 and determines whether or not a person has passed (ST11). The CPU 11 continues this state until the passage of a person is detected. When the passage of the person is detected, the CPU 11 controls the electronic lock unit 24 to lock the gate (ST12). And a process returns to the standby state of step ST1.

  Hereinafter, a case where a user who possesses the card 5a in which the wireless tag 5 permitted to enter the development room 4C in the building 100 configured as described above enters the development room 4C from outside the building 100 will be described. explain.

  The gate at the entrance of the building 100 is locked by the wireless tag reader ENT. At this time, as shown in FIG. 2, “Please hold the card in the lower frame” is displayed on the display unit 2 of the wireless tag reader ENT.

  When the user holds the card 5a over the scanner unit 3, the wireless tag reader ENT reads response data including RFID data, user data, and additional data from the wireless tag 5 embedded in the card 5a. A certain value is calculated by inputting data and additional data. Since this constant value is permitted to enter the development room 4C, a constant value “GHI-4C” is obtained. This constant value “GHI-4C” is stored in the RAM 13 of the wireless tag reader ENT as shown in FIG. Accordingly, an entry permission message such as “Please pass” is displayed on the display unit 2 of the wireless tag reader ENT, an OK sound is generated, and the gate is unlocked. When the user passes the gate, the gate is locked again.

  Then, the user passes through the gate at the entrance, reaches the elevator room, operates the elevator EV, and goes up to the fourth floor. Subsequently, the user holds the card 5a over the scanner unit 3 of the wireless tag reader 4f. Then, the wireless tag reader 4f reads response data composed of RFID data, user data, and additional data from the wireless tag 5 embedded in the card 5a, and inputs the RFID data, user data, and additional data to the function G and inputs a predetermined value “ GHI-4C "is calculated. This constant value “GHI-4C” is stored in the RAM 13 of the wireless tag reader 4f as shown in FIG. Therefore, an entry permission message is displayed on the display unit 2 of the wireless tag reader 4f, an OK sound is generated, and the gate is unlocked. When the user passes the gate, the gate is locked again. When the user holds the card 5a over the wireless tag readers 1f, 2f, 3f on the other floors, the constant value “ABC-4A” calculated by the function G is as shown in FIG. , 3f are not stored in the RAMs 13, for example, an error message such as "cannot pass" is displayed on the display unit 2 and an error sound is generated.

  After the user passes through the gate provided with the wireless tag reader 4f, the user proceeds to the entrance of the development room 4C and holds the card 5a over the scanner unit 3 of the wireless tag reader 4c. Then, the wireless tag reader 4c reads response data composed of RFID data, user data, and additional data from the wireless tag 5 embedded in the card 5a. GHI-4C "is calculated. This constant value “GHI-4C” is stored in the RAM 13 of the wireless tag reader 4c as shown in FIG. Therefore, an entry permission message is displayed on the display unit 2 of the wireless tag reader 4c, an OK sound is generated, and the gate is unlocked. When the user passes the gate, the gate is locked again. When the user holds the card 5a over the wireless tag readers 4a and 4c of the other development rooms 4A and 4B, the fixed value “GHI-4C” calculated by the function G is the wireless tag reader 4a as shown in FIG. , 4b, the error message is displayed on the display unit 2 and an error sound is generated.

  According to the entrance security system applied to the building 100 of this embodiment, the additional data calculated by the function G from RFID data, user data, RFID data, user data, and a fixed value corresponding to the development room permitted to enter the room. Is placed over the scanner unit 3 of the RFID tag readers ENT, 1f to 4f and 1a to 4c installed at the entrance of the building 100, the entrance to each floor, and the entrance of each development room. The tag reader calculates a constant value by the function F based on the RFID data, user data, and additional data read from the wireless tag 5, and determines whether or not the constant value is within the constant value stored in the RAM 13. The gate lock can be released when there is the same constant value.

  Therefore, since the gate lock release determination is made based on the constant value stored in the RAM 13 of each of the wireless tag readers ENT, 1f to 4f, 1a to 4c, each wireless tag reader ENT can be used even when a new entrance security system is introduced. , 1f to 4f, 1a to 4c are connected to the network, and there is no cost for constructing a network that does not need to be managed by the management server.

  Further, even when the number of users permitted to enter the room increases and a card 5a in which the wireless tag 5 is newly embedded is issued, the determination of the release of the gate lock is made based on the RFID data, user data, and additional data read from the wireless tag 5. Therefore, since it is not necessary to update the data of the RAM 13 of each of the wireless tag readers ENT, 1f to 4f, 1a to 4c, since the constant value calculated by the function F based on the function F and the constant value stored in the RAM 13 is used. It is possible to save the trouble of updating.

  Further, RFID data that is a unique ID of the wireless tag 5 is used as a calculation target of additional data generated by the function G. For example, even if user data or additional data can be copied to another wireless tag, since the RFID data is different, even if the wireless tag reader calculates a constant value by the function F, the correct constant value is Don't be. Therefore, it becomes difficult to forge data necessary for collation stored in the RAM 13 of each of the RFID tag readers ENT, 1f to 4f, 1a to 4c, so that the card 5a can be prevented from being forged and security can be improved.

  In addition, the constant value stored in the wireless tag reader ENT is a different fixed value assigned to all development rooms that need to be secured in the building, and the constant value stored in the wireless tag readers 1f to 4f is The fixed value assigned to all the development rooms that need to be secured for entry into the floor, and the fixed value stored in the wireless tag readers 1a to 4c should be stored as the fixed value assigned to the installed development room. As a result, entry into the building and entry into the floor can be restricted, and security can be further improved.

The figure which shows schematically the cross section of the building in embodiment of this invention. The figure which shows the external appearance of the wireless tag reader in the embodiment. The block diagram which shows the principal part structure of the radio | wireless tag reader in the embodiment The figure which shows the constant value allocated to all the rooms in the embodiment. The figure which shows the fixed value memorize | stored in the radio | wireless tag reader of the entrance of the building in the embodiment. The figure which shows the fixed value memorize | stored in the radio | wireless tag reader of each floor in the embodiment. The figure which shows the fixed value memorize | stored in the radio | wireless tag reader of each room in the embodiment. The figure which shows the surface of the card | curd with which the radio | wireless tag in the same embodiment was embed | buried. FIG. 3 is a block diagram showing a main configuration of the wireless tag in the embodiment. 6 is a flowchart showing processing executed by the wireless tag reader in the embodiment.

Explanation of symbols

  ENT, 1f to 4f, 1a to 4a ... wireless tag reader, 5 ... wireless tag, 5a ... card, 11 ... CPU, 12 ... ROM, 13 ... RAM, 19 ... antenna, 24 ... electronic lock unit, 51 ... tag antenna, 56 ... Control unit, 57 ... Memory, 57a ... RFID area, 57b ... User area, 57c ... Additional data area, 100 ... Bill

Claims (2)

There are entrance restriction means for restricting entrances installed at predetermined locations such as the entrance of the building and the entrance of each floor and the entrance of each room in the building, and in the memory in response to the inquiry command by radio In the entrance security system for releasing the entry restriction based on information read from a wireless tag capable of wirelessly communicating stored information,
The wireless tag includes unique identification information for performing wireless communication, user information about a user, and additional information calculated based on the identification information, the user information, and constant value information about a predetermined constant value. Store in memory,
The wireless tag reader stores a predetermined number of constant values, an acquisition means for acquiring the identification information, the user information, and the additional information responded to the inquiry command from the wireless tag, and the acquisition A fixed value information calculating means for calculating a fixed value based on the identification information obtained by the means, the user information and the additional information, and a fixed value calculated by the fixed value information calculating means is stored in the storage means. A judging means for judging whether or not it is within a certain value, and an entry restriction releasing means for releasing the entry restriction of the entry restricting means when the judging means judges that the same constant value exists. A security system for entering rooms.   The predetermined number of constant values stored in the storage means of the RFID tag reader installed at the entrance of the building are different constant values assigned to all the rooms in the building where entry is restricted, and the building The predetermined number of constant values stored in the storage means of the RFID tag reader installed at the entrance of each floor in the floor is a constant value assigned to all the rooms that are placed in the floor room for performing entry restriction, The entrance security system according to claim 1, wherein the predetermined number of constant values stored in the storage means of the RFID tag reader installed at the entrance of the room is a constant value assigned to the installed room. .

Images