JP5441223B2 - Door lock system - Google Patents

Description

  The present invention relates to a door lock system that controls the locking and unlocking of doors, such as rooms and boxes of various facilities, such as guest rooms in accommodation facilities, conference rooms, lockers, delivery boxes in apartment buildings, safes, etc. It is.

  In recent years, various door lock systems using an IC card or a magnetic card and a reader / writer for the card have been proposed in order to improve security and convenience.

  FIG. 7 is a diagram showing an example of a conventional door lock system, and shows a configuration of a card-type guest room key centralized control system described in Patent Document 1. In FIG. This system is disclosed as a system for centrally controlling locking / opening of guest rooms in facilities such as hotels, and a dedicated card is issued every time by using a credit card owned by a customer as a room key. Since it is not necessary, it has been proposed as an authentication system that can keep operating costs low.

  In this example, as shown in FIG. 7, when checking in at the front desk, the customer reads the contents of the credit card 31 and registers the credit card 31 as a key for entering the room assigned to the customer. The central device 32 is configured to centrally control the terminal 33 corresponding to the card type key of each guest room.

  The terminal 33 in each guest room reads the contents of the credit card 31 inserted as the entrance key, and determines whether or not the credit card 31 is registered in the center device 32 as the entrance key for the guest room. By inquiring and obtaining a response indicating that the credit card 31 has been registered from the center device 32, the door of the guest room is opened.

  FIG. 8 is a diagram showing another example of a conventional door lock system, and shows a configuration of a security system described in Patent Document 2. As shown in FIG. This system has been proposed as a security system that extends the backup operation time in the event of a power outage, and enables monitoring of a section where the occupant remains or a section with a high security level to the end.

  In this example, as shown in FIG. 8, in the section 52 or 53, the authentication data stored in the ID card 46 is read by the card reader 44 and transmitted to the controller 41, and is registered in the memory in the controller 41 by the CPU 42. Authentication is performed by checking with the data stored, and the electric lock 45 is locked and unlocked based on the result. This system includes a backup battery 43 that supplies power to the electric lock 45 and the card reader 44 via power lines 47 and 48 in the event of a power failure, and the controller 41 monitors the remaining battery capacity of the battery 43 to When the remaining amount becomes a certain value or less, the power supply to the card reader 44 and the electric lock 45 is stopped in order from a section with a low security level or a section with no occupants to extend the operation time.

JP-A-6-240937 JP 2009-009268 A

  When the system of Patent Document 1 is newly installed, it is necessary to construct a communication line between each terminal, which is a controlled device of the card-type guest room key centralized control system, and the center apparatus that performs centralized control. In addition, it is necessary to construct a power line in order to supply power to each terminal. These wiring works require a high cost, and there are problems that the communication line and the power line are likely to be broken due to repeated opening and closing of the door at the hinge portion of the door.

  In addition, when power supply to the center device and each terminal is stopped due to a power failure or the like, there is a problem that all functions cannot be used simultaneously.

  In the example of Patent Document 2, a backup battery is provided, a commercial power supply is provided in the event of a power failure, and a section for supplying power is limited to extend the battery operating time. However, even when installing this system, it is necessary to carry out the wiring work of the power lines and communication lines of the terminals in each room. Similarly, the wiring work requires a high cost, and the doors that are repeated at the hinges of the door etc. There is a problem that the communication line and the power line are easily disconnected by opening and closing.

  In addition, both systems need to supply power to card readers and controllers installed in each section even in a standby state where it is not necessary to perform unlocking control of the electric lock, and power is always consumed. There is a problem.

  The object of the present invention is to solve the above-mentioned problems of the prior art, reduce the power consumption in the standby state without requiring the wiring work of the communication line and the power line, and can be locked even when the commercial power supply is out of power. Is to provide.

In order to solve the above problems, a door lock system according to the present invention is a door lock system including a portable unlocking device and a door locking device, and the unlocking device stores data in an internal memory. A function for transmitting the data stored in the internal memory to the door lock device as a command, a function for receiving a response to the command from the door lock device, and an electromagnetic induction method for the door lock device. and a function of transmitting power, the door locking device, and an electric lock, a function of receiving the data transmitted as a command from the unlocking device, the electric lock to determine the received data opens a function of performing authentication for tablets, a function of transmitting a response to said command to said unlocking device, said electromagnetic induction It includes a function of receiving power from the unlocking device by formula, and a function of generating two different power supply voltages from the power that the power receiving, transmission and reception of the commands and responses is performed by the radio system, the power receiving A function of generating two different power supply voltages from the generated power, the first constant voltage circuit connected in parallel to the rectifier circuit connected to the antenna that receives the power and receives the data; A second constant voltage circuit, and the first constant voltage circuit generates a power supply voltage for driving a controller that controls the entire door lock device, and the second constant voltage circuit It is characterized by generating a power supply voltage for driving the electric lock .

  Here, the transmission of the command performed by the unlocking device is performed by superimposing a modulation signal on a carrier wave transmitted to transmit power from the unlocking device by electromagnetic induction, and the response performed by the door lock device May be performed by superimposing a modulation signal on a carrier wave transmitted to transmit power from the unlocking device by electromagnetic induction.

  As described above, according to the present invention, since the power is supplied from the portable unlocking device, it is possible to obtain a door lock system that does not require a power line wiring work for supplying power to the door lock device. Therefore, a door lock system without a power line disconnection failure at the hinge portion of the door can be obtained. Furthermore, a door lock system can be obtained that can be locked and unlocked even if the commercial power supply is interrupted.

  Moreover, in this invention, the door lock system which does not require wiring construction of a communication line is obtained by transmitting and receiving a command and a response with a radio system including an electromagnetic induction system etc. between an unlocking apparatus and a door lock apparatus. . Therefore, the door lock system without the disconnection trouble of a communication line in the hinge part etc. of a door is obtained. Furthermore, power transmission / reception and signal transmission / reception are performed by transmitting and receiving commands and responses by superimposing a modulation signal on the carrier wave transmitted to transmit power from the unlocking device by electromagnetic induction or by the transmitted carrier wave. Can share parts such as antennas, and can further simplify the system.

  In addition, since the door lock device has a function of generating at least two different power supply voltages from the received power, the system can be configured more efficiently. For example, when two types of power supply voltages are a controller voltage V1 and an electric lock voltage V2, and V1 <V2, it is not necessary to drive an electric lock that requires a voltage V2 higher than the voltage V1 of the controller unit. In the case of setting and updating the registration data for determining the correctness of the unlocking data to the door lock device, etc., it is not necessary to receive and store power up to the level of the voltage V2 that can drive the electric lock. A door lock system that reduces power consumption in the standby state can be obtained.

  As described above, according to the present invention, it is possible to obtain a door lock system that does not require wiring work for a communication line and a power line, reduces power consumption in a standby state, and can be locked and unlocked even when a commercial power source is out of power.

The block diagram which shows 1st Embodiment of the door lock system which concerns on this invention. The block diagram which shows 2nd Embodiment of the door lock system which concerns on this invention. The conceptual diagram of the circuit structure of the rectifier circuit of 1st Embodiment, a constant voltage circuit, an electrical storage circuit, and a voltage detection circuit. The conceptual diagram of the circuit structure of the rectifier circuit of 2nd Embodiment, a constant voltage circuit, an electrical storage circuit, and a voltage detection circuit. The sequence diagram which shows the outline of the basic communication procedure between the unlocking device and door lock device of 1st Embodiment. The sequence diagram which shows the outline of the basic communication procedure between the unlocking apparatus and door lock apparatus of 2nd Embodiment. The figure which shows an example of the conventional door lock system. The figure which shows the other example of the conventional door lock system.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a first embodiment of a door lock system according to the present invention. In FIG. 1, the door lock system according to the present embodiment is a door lock system including an unlocking device 1 and a door lock device 2, and the unlocking device 1 and the door lock device 2 are each supplied with electric power by electromagnetic induction. Antennas 9 and 12 for power transmission and reception and transmission and reception of commands and responses are provided. The unlocking device 1 has a function of storing data in a memory circuit 11 that is an internal memory, a command transmission circuit 8 that transmits the data stored in the memory circuit 11 as a command to the door lock device 2 via the antenna 9, A response receiving circuit 7 that receives a response to a command from the door lock device 2 via an antenna 9, and a power transmission circuit 10 that transmits power to the door lock device 2 via the antenna 9 by an electromagnetic induction method. It has sex. The door lock device 2 has an electric lock 20, a command receiving circuit 21 that receives data transmitted as a command from the unlocking device 1 via the antenna 12, and discriminates the received data to unlock the electric lock 20. A function for performing authentication, a response transmission circuit 22 that transmits a response to the command to the unlocking device 1 via the antenna 12, an electric lock driver 19 that locks and unlocks the electric lock 20, and an electromagnetic induction method. A rectifier circuit 13 that receives power from the unlocking device via the antenna 12 is provided, and the door lock device 2 unlocks the electric lock 20 using the power received by the electromagnetic induction method.

  In the door lock system of the present embodiment, the transmission of the command performed by the unlocking device 1 is performed by superimposing the modulation signal on the carrier wave transmitted to transmit power from the unlocking device by the electromagnetic induction method, The transmission of the response performed by the lock device 2 is performed by superimposing the modulation signal on the carrier wave transmitted to transmit power from the unlocking device 1 by the electromagnetic induction method.

  In the unlocking device 1, the memory circuit 11 stores an operation program and unlocking data. In addition, the unlocking device 1 includes a battery circuit 5 for driving the unlocking device 1, an operation device 4 for inputting instructions for power transmission and transmission / reception of commands and responses, a display device 3 indicating an operation state, and an unlocking device. 1 has a controller 6 for controlling the whole.

  The battery circuit 5 is preferably one that can be charged, and is charged by a charging circuit (not shown).

  The operation device 4 is composed of, for example, a switch or a numeric keypad. By performing a predetermined switch or key operation of the operation device 4, power is transmitted by electromagnetic induction to the door lock device 2, a command is transmitted to the door lock device 2, and a response is received from the door lock device 2. . The type of command to be transmitted to the door lock device 2 is at least a command for transmitting unlocking data, a command for registering data for the door lock device 2 to identify unlocking data and perform authentication, and unlocking of the electric lock 20 There are a command for acquiring the lock state and a command for acquiring the voltage level of the power storage circuit 16.

  The display device 3 is composed of, for example, an LCD or an LED lamp. Information such as the unlocked state of the electric lock 20 and the voltage level of the power storage circuit 16 is displayed according to the operation of the operation device 4.

  The memory circuit 11 stores an operation program for the unlocking device 1, unlocking data for the door lock device 2, and the like. The unlocking data of the door lock device 2 is stored in the memory circuit 11 via an interface (not shown) such as USB or RS-232C.

  The power transmission circuit 10 includes a matching circuit (not shown) that matches the impedance with the antenna 9, an EMC filter (not shown), a driver circuit (not shown), and the like. The driver circuit switches the input with a signal transmitted from the controller 6. It is converted into a transmission power waveform and sent to the antenna 9. As the antennas 9 and 12, loop antennas used for general non-contact power transmission, proximity communication, and the like can be used.

  The response receiving circuit 7 demodulates the signal received by the antenna 9 and modulated by the response data from the door lock device 2 and sends it to the controller 6.

  The command transmission circuit 8 receives a command transmitted from the controller 6, superimposes a modulated wave based on command data on this carrier wave with the transmission power waveform as a carrier wave, and sends it to the antenna 9.

  In the door lock device 2, the rectifier circuit 13 performs rectification so that the power received by electromagnetic induction via the antenna 12 becomes DC power, and stabilizes the DC voltage rectified by the rectifier circuit 13. The power storage circuit 16 stores the power whose voltage is stabilized by the constant voltage circuit 14, and the voltage detection circuit 15 detects the voltage level of the power stored in the power storage circuit 16 and sends a voltage detection signal to the controller 17. The command receiving circuit 21 demodulates the command received by the antenna 12 and sends it to the controller 17. The controller 17 performs processing in accordance with the command, and sends the processing result to the response transmission circuit 22 as a response. The response transmission circuit 22 modulates the carrier wave with the response data and sends it to the antenna 12. Further, the door lock device 2 includes a memory circuit 23 for storing data for discriminating an operation program of the door lock device 2 and unlocking data from the unlocking device 1 and performing authentication, a display 18 for displaying an operation state, It has an electric lock driver 19 for driving the electric lock 20 and an electric lock 20 for locking the door.

  The electric lock 20 includes a latch bolt having a triangular tip that always protrudes from the lock by a spring, a door knob that pulls the latch bolt into the lock by rotating, and a self-holding solenoid that prohibits rotation of the door knob. The electric lock 20 is installed on the door, and there is a hole in the seat on the door frame side where the latch bolt of the electric lock 20 faces. Locking is a state in which the protruding latch bolt enters a hole in the receiving seat of the opposing door frame, and the door knob is locked so that it cannot be rotated by a self-holding solenoid. The unlocking is a state in which electric power is supplied in a pulse form from the electric lock driver 19 to the self-holding solenoid and the door knob is unlocked. In this state, the door knob can be rotated to open the door. The operation of re-locking releases the solenoid that is held by itself when the door knob is rotated and the latch bolt is pulled into the lock. And it is relocked so that it cannot rotate in the position which returned the rotated doorknob. The latch bolt for closing the opened door is structured to slide into the hole of the receiving seat facing the spring with a triangular tip, and it is not particularly necessary to operate the self-holding solenoid.

  In response to the unlocking signal from the controller 17, the electric lock driver 19 supplies the pulse-shaped electric power to the self-holding solenoid of the electric lock 20 using the electric power stored in the power storage circuit 16.

  The memory circuit 23 stores a program for operating the door lock device 2 and data for determining and authenticating the unlocking data sent from the unlocking device 1.

  The indicator 18 is composed of, for example, an LCD, an LED lamp, or the like, and displays the state of the door lock device 2, for example, the locked / unlocked state, the voltage level of the power storage circuit 16, and the like.

  FIG. 3 is a conceptual diagram of the circuit configuration of the rectifier circuit 13, the constant voltage circuit 14, the power storage circuit 16, and the voltage detection circuit 15 according to the first embodiment. The rectifier circuit 13 may be a rectifier circuit using a diode bridge or the like. The constant voltage circuit 14 may be a linear regulator or a switching regulator. A high-capacity electric double layer capacitor or the like is preferably used for the power storage circuit 16. For the capacity, select the one that can drive the self-holding solenoid of the electric lock used and the controller. The voltage detection circuit 15 monitors the voltage of the power storage circuit 16, determines whether power that can drive the controller and the electric lock is stored, and notifies the controller. This notification signal may be used as a reset release signal for the controller.

  FIG. 5 is a sequence diagram illustrating an outline of a basic communication procedure between the unlocking device 1 and the door lock device 2 according to the first embodiment.

  In FIG. 5, the unlocking device 1 starts power transmission in the first step S1. The door lock device 2 receives the power transmitted from the unlocking device 1, rectifies it, converts it to a constant voltage, and stores it in the power storage circuit 16.

  In the next step S2, the unlocking device 1 transmits a voltage level acquisition command. The door lock device 2 has not yet completed power storage, and does not respond when the power is not sufficient to drive the electric lock and the controller. In this case, the unlocking device 1 repeatedly transmits a voltage level acquisition command until a response is returned.

  When a voltage level acquisition command is transmitted after sufficient power is stored in the power storage circuit 16 as step S3, a response indicating that power storage is completed in a state where the electric lock and the controller can be driven is returned as step S4.

  As the next step S5, the unlocking device 1 transmits an unlocking data transmission command. The door lock device 2 determines whether the transmitted unlocking data is correct data to be unlocked based on the data registered in the memory circuit, and unlocks the electric lock 20 only when the unlocking data is verified as valid. A response is returned as step S6. When the unlocking data cannot be authenticated as valid, a response to that effect is returned, and the unlocking device 1 resends an error process, for example, an unlocking data transmission command according to the response, or unlocks with the updated unlocking data. Processing such as retransmitting a data transmission command is performed.

  Next, in step S7, the unlocking device 1 transmits an unlocking state acquisition command, receives a response from the door lock device 2 in step S8, confirms that it is in the unlocked state, and then finally powers in step S9. End power transmission.

  As described above, this embodiment eliminates the need for expensive wiring work by performing power transmission and communication by electromagnetic induction, and can be operated even during a power failure, resulting in a door lock system that does not consume power during standby. It is done.

  FIG. 2 is a block diagram showing a second embodiment of the door lock system according to the present invention.

  The unlocking device 1 used in the door lock system of the present embodiment is the same as the unlocking device 1 used in the first embodiment. The present embodiment is different from the first embodiment only in that the door lock device 26 has a function of generating two different power supply voltages from the received power.

  In FIG. 2, the door lock device 26 receives power from the second constant voltage circuit 24 that rectifies the received power into direct current by the rectifier circuit 13 and then sends it to the storage circuit 16 as power for driving the electric lock 20. After the power is rectified to direct current, the controller 17 and a first constant voltage circuit 25 that sends the voltage to the voltage detection circuit 15 are provided for driving the controller. The electric power whose voltage is stabilized by the second constant voltage circuit 24 is stored in the power storage circuit 16, the voltage level of the first constant voltage circuit 25 is detected by the voltage detection circuit 15, and the voltage detection signal is sent to the controller 17. Sent out. Configurations and functions of the antenna 12, the controller 17, the command receiving circuit 21, the response transmitting circuit 22, the memory circuit 23, the display 18, the electric lock driver 19, and the like are the same as those of the door lock device 2 of the first embodiment.

  FIG. 4 is a conceptual diagram of the circuit configuration of the rectifier circuit 13, the first constant voltage circuit 25, the second constant voltage circuit 24, the storage circuit 16, and the voltage detection circuit 15 according to the second embodiment. The rectifier circuit 13 may be a rectifier circuit using a diode bridge or the like. The first constant voltage circuit 25 is for driving the controller and may be a linear regulator or a switching regulator. The second constant voltage circuit 24 is for driving an electric lock and may be a linear regulator or a switching regulator. Here, the output voltage of the first constant voltage circuit 25 is smaller than the output voltage of the second constant voltage circuit 24. For the power storage circuit 16, a high-capacity electric double layer capacitor or the like is used. The voltage detection circuit 15 monitors the voltage of the first constant voltage circuit 25, and notifies the controller when it reaches a level where the controller can be driven. This notification signal may be used as a reset release signal for the controller. The power stored in the power storage circuit 16 is monitored by an AD converter circuit (not shown) of the controller.

  FIG. 6 is a sequence diagram illustrating an outline of a basic communication procedure between the unlocking device 1 and the door lock device 26 according to the second embodiment.

  In FIG. 6, the unlocking apparatus 1 starts electric power transmission first as step S10. The door lock device 26 receives the electric power transmitted from the unlocking device 1, rectifies it by the rectifier circuit 13, converts the voltage to a constant voltage by the second constant voltage circuit, and starts storing power in the power storage circuit 16. Further, the voltage detected by the first constant voltage circuit is detected by the voltage detection circuit 15 and a detection signal is sent to the controller. This signal is used as a reset signal for the controller.

  Next, as step S11, the unlocking device 1 transmits a voltage level acquisition command. The door lock device 26 measures the voltage of the power storage circuit 16 with an AD converter circuit (not shown) of the controller, determines whether or not the electric lock 20 can be driven, and transmits the result as a response in step S12. The unlocking device 1 repeatedly transmits a voltage level acquisition command until obtaining a response that the electric lock can be driven.

  When the voltage level acquisition command is transmitted after the storage circuit has been charged to the power that can drive the electric lock 20 as step S13, a response indicating that the electric lock can be driven is returned as step S14.

  Next, as step S15, the unlocking device 1 transmits an unlocking data transmission command. Receiving this command, the door lock device 26 determines whether or not the transmitted unlocking data is correct, unlocks the electric lock 20 only when the unlocking data is authenticated and returns a response as step S16. If the unlocking data cannot be authenticated, a response to that effect is returned, and the unlocking device 1 resends an error process, for example, an unlocking data transmission command according to the response, or unlocks with the updated unlocking data. Processing such as retransmitting a data transmission command is performed.

  In step S17, the unlocking device 1 transmits an unlocking state acquisition command, confirms the unlocking state by a response from the door lock device 26 in step S18, and finally ends power transmission in step S19.

  In the second embodiment, as described above, the unlocking device 1 and the door lock device 26 can communicate with each other before the electric lock can be driven after the electric power is transmitted by electromagnetic induction. That is, in the process of not driving the electric lock, for example, when setting or updating the registration data for determining and authenticating the unlocking data for the door lock device, the power transmission to the level at which the electric lock can be driven and A door lock system is obtained that can start communication between the unlocking device and the door lock device in a short time without requiring power storage.

  INDUSTRIAL APPLICABILITY The present invention can be used for a door lock system that controls unlocking of various door locks such as a guest room, a conference room, a locker, an apartment delivery box, and a safe in an accommodation facility. As the unlocking device, a mobile phone equipped with an NFC (Near Field Communication) function capable of communicating with a non-contact IC card by electromagnetic induction can be used. By using a mobile phone, unlocking data can be distributed in advance over the Internet or the like, and a reservation permit service such as a conference room or a locker can be performed over the Internet.

  Needless to say, the present invention is not limited to the above-described embodiment, and the design can be changed according to the purpose and application. For example, the method for realizing each functional part constituting the present invention may be other than the circuit configuration of the above-described embodiment, and other functions may be added as necessary.

DESCRIPTION OF SYMBOLS 1 Unlocking device 2, 26 Door lock device 3, 18 Indicator 4 Operator 5 Battery circuit 6, 17 Controller 7 Response receiving circuit 8 Command transmitting circuit 9, 12 Antenna 10 Power transmission circuit 11, 23 Memory circuit 13 Rectifier circuit 14 Constant voltage circuit 15 Voltage detection circuit 16 Power storage circuit 19 Electric lock driver 20, 45 Electric lock 21 Command reception circuit 22 Response transmission circuit 24 Second constant voltage circuit 25 First constant voltage circuit 31 Credit card 32 Center device 33 Terminal 41 Controller 42 CPU
43 Battery 44 Card reader 46 ID card 47, 48 Power line 52, 53 Section

Claims (2)

A door lock system comprising a portability unlocking device and a door lock device,
The unlocking device is:
The ability to store data in internal memory;
A function of transmitting the data stored in the internal memory to the door lock device as a command;
A function of receiving a response to the command from the door lock device;
And a function of transmitting power to the door lock device by an electromagnetic induction method,
The door lock device is
Electric locks,
A function of receiving the data transmitted as a command from the unlocking device;
A function of performing authentication for determining the received data and unlocking the electric lock;
A function of transmitting a response to the command to the unlocking device;
A function of receiving power from the unlocking device by the electromagnetic induction system,
A function of unlocking and unlocking the electric lock using power received by the electromagnetic induction method ;
A function of generating two different power supply voltages from the received power ,
Transmission and reception of the command and response are performed by a wireless method,
The function of generating two different power supply voltages from the received power is as follows:
A first constant voltage circuit and a second constant voltage circuit connected in parallel to a rectifier circuit connected to an antenna that receives the power and receives the data;
The first constant voltage circuit generates a power supply voltage for driving a controller that controls the entire door lock device,
The door lock system characterized in that the second constant voltage circuit generates a power supply voltage for driving the electric lock .   Transmission of the command performed by the unlocking device is performed by superimposing a modulation signal on a carrier wave transmitted to transmit power from the unlocking device by electromagnetic induction, and transmission of the response performed by the door lock device is performed. The door lock system according to claim 1, wherein a modulation signal is superimposed on a carrier wave transmitted to transmit power from the unlocking device by electromagnetic induction.

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