JP4295571B2 - Non-contact card lock - Google Patents

Description

  The present invention reads, without contact, card information stored in a contactless IC card possessed by a person who is permitted to enter a room of a building such as a hotel, and the electric lock of the door is based on the read card information. It is related with the non-contact-type card lock which controls (unlocking control, locking / unlocking control).

  For example, in a hotel, a card lock system is known that manages from check-in to check-out by a single magnetic card.

  More specifically, in this card lock system, as shown in FIG. 4, a card reader 54 for reading the magnetic information of the magnetic card 53 is provided on the escation (washer) 52 disposed in the door 51 of each chamber. ing. The magnetic card 53 inserted into the card insertion slot 54a of the card reader 54 stores magnetic information such as room number, check-in / check-out date and time, etc. by writing from the host computer. It has become.

For example, a case where a customer stays at a hotel will be described as an example. When the customer completes the check-in procedure at the front desk, the magnetic card 53 is handed to the customer from the front desk. The magnetic card 53 stores the room number of the room where the guest stays and the check-in date as magnetic information. When the magnetic card 53 is inserted into the card insertion slot 54a of the card reader 54 installed in the door 51 of the room where the customer stays, the magnetic information of the magnetic card 53 is read. When it is determined that the read magnetic information is information that allows entry into the room, the electric lock of the door 51 in the room is automatically unlocked, and the door 51 can be opened. Thereby, the customer who has the magnetic card 53 can enter the room.
Japanese Patent Laid-Open No. 9-297865

  However, in the conventional card lock system described above, since the magnetic information of the magnetic card 53 is read by the card reader 54, the magnetic card 53 has to be inserted into the card insertion port 54a of the card reader 54, which is troublesome. There was a problem. Further, since the magnetic information of the magnetic card 53 is read by the magnetic head of the card reader 54 being in direct contact with the magnetic surface of the magnetic card 53, there is wear at the time of reading, adhesion of dust, etc., and the durability of the card is lacking. There was a problem. Moreover, the card reader 54 that reads magnetic information is supplied with drive power by a battery, but the drive power is always supplied to the card reader 54 even when the magnetic card 53 is not read. For this reason, there has been a problem that power is wasted, the battery is consumed, and the battery replacement time is advanced.

  By the way, the card lock system described above is a contact type that reads the magnetic information of the magnetic card 53 by contacting the magnetic head of the card reader 54. For example, as in the entrance / exit management device disclosed in Patent Document 1 above. There is also known a card lock system that uses an IC card for transmitting card information, receives the card information transmitted from the IC card in a contactless manner, and controls the unlocking of the electric lock based on the received card information. .

  However, in the non-contact type card lock system using this type of IC card, including the entrance / exit management device disclosed in Patent Document 1, the drive power is supplied to the card reader that reads the card information of the IC card. Since wiring is performed through wiring, wiring is troublesome. In addition, since the card reader is always supplied with power and wastes power, it has not been possible to save power. For this reason, although the structure which incorporates a battery instead of the power supply by the said wiring is also considered, it did not come to solve the subject that power is always consumed. Furthermore, a configuration is also possible in which a push button is provided on the card reader side, and when the push button is operated, a drive power is supplied to the card reader to start up and read the information on the IC card. An annoying operation is required. Moreover, in the presence sensor etc., there was a misrecognition only by a person passing even if it does not pass a card | curd.

  Accordingly, the present invention has been made in view of the above-described problems, and can save power without wasteful power consumption, and can perform card identification and card information reading without contact and troublesome operation. An object is to provide a contactless card lock that can be performed.

In order to achieve the above object, the present invention reads the card information of a non-contact IC card held by a person who is permitted to enter a room of a building in a non-contact manner, and the door of the room is based on the read card information. In the non-contact type card lock that unlocks and / or controls the electric lock of
A battery for supplying drive power ;
Intermittently outputting an electromagnetic wave of the set card detection frequency Me pre by the supply of the drive power from the battery, of the non-contact IC card by the resonance of the LC resonance circuit of the noncontact IC card associated with the output of the electromagnetic wave Card detection means for identifying the presence,
And data communication with the contactless IC card by supplying the drive power from the battery when said card detecting means has identified the presence of the non-contact IC card, the contactless IC card of the card information and the previous SL electric lock Data communication means for comparing and comparing registration information indicating a condition for permitting control, and outputting a control signal for unlocking and / or locking the electric lock when the card information and the registration information match,
Control means having a cycle timer whose count value is reset every time a predetermined cycle is counted;
ON / OFF controlled by the control means for forming a first power supply line for periodically supplying driving power from the battery to the card detection means between the battery and the card detection means. A first power switch;
A second power source that is on / off controlled by the control means and that forms a second power supply line between the battery and the data communication means for supplying driving power from the battery to the data communication means. With a switch,
The control means controls the on / off of the first power switch at every interval when the cycle timer counts a predetermined cycle in the standby state, and the battery from the battery via the first power supply line. The card detection means periodically supplies drive power to the card detection means and turns off the second power switch to cut off the supply of drive power from the battery to the data communication means via the second power supply line. When the card detection means identifies the presence of the non-contact type IC card with the intermittent electromagnetic wave output from the means, the first power switch is controlled to be turned off and the battery passes through the first power supply line. The supply of drive power to the card detection means is turned off and the second power switch is controlled to be turned on in conjunction with this to supply the second power supply from the battery. Via down, characterized in that for supplying a driving power to said communication means.

  In the non-contact type card lock of the present invention, while the driving power is supplied from the battery to the card detection means (card detection RF circuit, detection circuit), data communication means (data communication RF circuit), drive control means ( Supply of drive power to the card lock control circuit) and the electric lock is cut off. When the card detection means identifies the presence of the non-contact IC card by intermittent electromagnetic wave output, the drive power supply to the card detection means is cut off, and the data communication means, the drive control means, and the drive power supply to the electric lock. Supplied. Thereby, the data communication means performs data communication with the non-contact IC card, and collates and compares the card information of the non-contact IC card with the registered information. When the card information and the registration information coincide with each other as a result of this comparison, the drive control means controls the unlocking of the electric lock, for example.

  According to the non-contact type card lock of this example, the power consumption in a series of operations from the identification of the presence of a non-contact IC card, the reading of card information, and the unlock control of the electric lock is reduced to the minimum necessary. Compared with this, it is possible to greatly reduce power consumption.

  When a contactless IC card is used and the presence of this card is identified and the card information is read in a contactless manner, the drive power is supplied only to the necessary circuits, so the card is inserted into a conventional card reader. This eliminates the need for a button operation and a button operation for activating the card reader, and a person who has a non-contact IC card can enter the detection area and can identify the card and read the card information. In addition, since the card information is read in a non-contact manner, the durability of the card is increased as compared with that using a magnetic card.

  A configuration for detecting a non-contact IC card (card detection means), a configuration for performing data communication with a non-contact IC card (data communication means), and a configuration for controlling the unlocking of an electric lock (card lock control circuit) are separated as logic. Therefore, the degree of freedom in selecting the circuit configuration of the data communication means is increased, and the same antenna can be used for identification of non-contact IC cards and reading / writing of card information. Depending on the application, the card detection means and data can be used. The antenna can be separated by the communication means.

  Since each configuration is divided as logic and the data communication RF circuit 7 operating at a constant voltage and the detection means (card detection RF circuit, detection circuit) are configured separately, the card detection frequency of the non-contact IC card Can be selected independently. In addition, it is possible to easily change the card detection power when identifying a non-contact IC card. Thereby, the setting of the detection range distance of a non-contact IC card can be performed freely to some extent.

  Since each component is divided as logic, power is not consumed at the same time for identification of non-contact IC cards, data communication with non-contact IC cards, and card lock control. This can save power.

  FIG. 1 is a block diagram showing a schematic configuration of a non-contact card lock according to the present invention, and FIGS. 2A and 2B are a plan view and a side view of an escation in which the non-contact card lock according to the present invention is incorporated. FIG. 3 is a flowchart showing the operation of the non-contact card lock according to the present invention.

  In this example, the control object of the non-contact type card lock is described as an electric lock incorporated in a door of each room (guest room) of a hotel, for example. The contactless card lock of this example is built into the door of each hotel room (room), and is the contactless IC card as a contactless card possessed by the person authorized to enter the room? The card information in the card identified as the specific card is read in a non-contact manner, and the unlocking control of the door electric lock is performed based on the read card information.

  As shown in FIG. 1, the non-contact card lock 1 includes a controller 2 as a control means, a battery 3, a periodic power switch 4 as a first power switch, a main power switch 5 as a second power switch, and a card detection. A card detection means 6 including an RF circuit 6a and a detection circuit 6b, a data communication RF circuit 7 as a data communication means, a card lock control circuit 8 as a drive control means, and an electric lock 9 are schematically configured. In the non-contact type card lock, the above-described components are unitized, and are incorporated in, for example, the door scation 21 shown in FIG. 2, and the antenna portion is disposed inside the cover part 21 a provided on the escation 21. .

  The non-contact IC card 10 is used for unlocking control of the electric lock 9. The non-contact IC card 10 includes an antenna 10a, an LC resonance circuit 10b, an IC chip 10c including a CPU and a memory mounted therein. The contactless IC card 10 is basically possessed by a person who is permitted to enter the room of the building. Here, the case where the electric lock of the door of each hotel room is controlled to be unlocked will be described as an example. Therefore, the person who has checked in the hotel will have the non-contact IC card 10 and the non-contact IC. The card 10 stores card information (a property code, a room number, an expiration date, a check-in / check-out date and time, a stay period, etc.) relating to a room to stay.

  The controller 2 in FIG. 1 includes a cycle timer 2a inside, and is always supplied with power from the battery 3. The cycle timer 2a periodically counts time, and the count value is reset each time a predetermined cycle is counted. The The controller 2 outputs a switching signal to the periodic power switch 4 and the main power switch 5 based on a count value of a predetermined period by the period timer 2a and a detection signal from the card detection means 6 (detection circuit 6b) to switch the contacts. The periodic power switch 4 and the main power switch 5 are on / off controlled in conjunction with each other. The controller 2 includes a conversion circuit that converts electric power supplied from the battery 3 into electric power necessary for driving each unit (the card detection unit 6, the data communication unit 7, the drive control unit 8, and the electric lock 9). .

  The battery 3 in FIG. 1 can be removed and replaced, and the controller 2 and the card detection means 6 (card detection RF circuit 6a) via the power supply lines (periodic power supply line L1 and main power supply line L2 in FIG. 1). , A detection circuit 6b), a data communication RF circuit 7, a card lock control circuit 8, an electric lock 9 and the like are supplied with drive power.

  In FIG. 1, a periodic power switch 4 constituting a first power switch is provided between the controller 2 and the card detection means 6 (card detection RF circuit 6a). The periodic power switch 4 is switched on and off by switching the contact in conjunction with the main power switch 5 that forms the second power switch by a switching signal from the controller 2. That is, when the periodic power switch 4 is in a standby state, the contact is opened / closed by the switching signal input from the controller 2 at intervals of the period timer 2a counting a predetermined period, and is controlled on / off. The periodic power switch 4 is controlled to be switched off by opening a contact by a switching signal from the controller 2 when the detection circuit 6b identifies the presence of the non-contact IC card 10. Further, the periodic power switch 4 is controlled to be switched in conjunction with the main power switch 5 that constitutes the second power switch by a switching signal from the controller 2, and the contact is not changed while the contact of the main power switch 5 is closed and turned on. Open and off.

  The card detection RF circuit 6a in FIG. 1 is connected to the controller 2 via the periodic power switch 4, and when the contact of the periodic power switch 4 is closed and turned on, the drive power is supplied from the battery 3 via the controller 2. It is supplied periodically and outputs electromagnetic waves intermittently. This intermittently output electromagnetic wave can change the distance of the card detection range by changing its output voltage.

  The detection circuit 6b in FIG. 1 is connected to the card detection RF circuit 6a. When the LC resonance circuit in the non-contact IC card 10 is resonated by the intermittent electromagnetic wave output from the card detection RF circuit 6a, the detection circuit 6b The presence of the contact IC card is identified, and a detection signal to that effect is output to the controller 2.

  In the data communication RF circuit 7 in FIG. 1, when the detection circuit 6b identifies the non-contact IC card 10 and a detection signal is input to the controller 2, the contact of the main power switch 5 is closed and turned on. Drive power is supplied via the controller 2. This data communication RF circuit 7 is a circuit that operates at a constant voltage, performs data communication with the non-contact IC card 10 whose presence is identified, and pre-reads the card information read from the non-contact IC card 10. Compare and collate with registration information (information that permits entry: for example, room number, stay period, check-in date and time, etc.) indicating the conditions for permitting entry into the set room, and contactless from the comparison result It is determined whether the person who has the IC card 10 may be allowed to enter the room. When the data communication RF circuit 7 determines that entry is permitted, the data communication RF circuit 7 outputs a control signal that prompts the card lock control circuit 8 to permit the unlocking of the electric lock 9.

  When a control signal is input from the data communication RF circuit 7, the card lock control circuit 8 outputs an unlock signal to the electric lock 9 to control the unlocking of the electric lock 9.

  Although not shown, the electric lock 9 constitutes a part of a locking / unlocking mechanism incorporated in a lock box (housing) together with a knob, latchbold, dead bolt, and the like. When the unlock signal is input from the card lock control circuit 8, the electric lock 9 is unlocked by retracting the dead bolt by driving an actuator (not shown).

  As described above, the non-contact card lock 1 of the present example has an RF circuit for data communication (while the driving power is supplied from the battery 3 to the card detection means 6 (card detection RF circuit 6a, detection circuit 6b)). The supply of drive power to the data communication means) 7, the card lock control circuit (drive control means) 8, and the electric lock 9 is cut off. When the detection circuit 6b identifies the presence of the non-contact IC card 10 along with intermittent electromagnetic wave output from the card detection RF circuit 6a, the supply of drive power to the card detection means 6 is cut off and data communication is performed. Driving power is supplied to the RF circuit 7, the card lock control circuit 8, and the electric lock 9. As a result, the data communication RF circuit 7 performs data communication with the non-contact IC card 10 and compares the card information read from the non-contact IC card 10 with the registered information. If it is determined that entry into the room is permitted as a result of the comparison and collation, the card lock control circuit 8 controls the electric lock 9 to be unlocked.

  Next, the operation | movement at the time of unlocking of the non-contact-type card lock 1 comprised as mentioned above is demonstrated, referring the flowchart of FIG.

  In the standby state (ST1 to ST3), the contact of the periodic power switch 4 is opened / closed at intervals (for example, 500 msec) every time the periodic timer 2a of the controller 2 counts a predetermined period. Thereby, drive power is periodically supplied from the battery 3 to the card detection means 6 (card detection RF circuit 6a, detection circuit 6b) via the controller 2 through the periodic power supply line L1 (ST4). When the driving power is supplied from the battery 3, the card detection RF circuit 6a intermittently outputs an electromagnetic wave having a preset card detection frequency (for example, 13.56 MHz) (ST5). At this time, the main power switch 5 is turned off with the contact open. As a result, the supply of drive power from the battery 3 to the data communication RF circuit 7, the card lock control circuit 8, and the electric lock 9 through the main power supply line L2 is cut off.

  In this state, when the person who has the non-contact IC card 10 approaches the door and the non-contact IC card 10 enters the card detection area (for example, the non-contact IC card 10 is held over the cover portion 21a of the escation 21 of the door. The card detection means 6 (card detection RF circuit 6a, detection circuit 6b) identifies the presence or absence of the non-contact IC card 10. If the presence of the non-contact IC card 10 is identified and determined as a specific card, that is, if the card has a card detection frequency (for example, 13.56 MHz) set in the card detection RF circuit 6a, the non-contact IC The LC resonance circuit 10b in the card 10 resonates due to intermittent electromagnetic waves from the card detection RF circuit 6a. When the LC resonance circuit 10b in the non-contact IC card 10 resonates (ST6), the detection circuit 6b detects the resonance frequency to identify the presence of the non-contact IC card 10, and sends a detection signal indicating that to the controller 2. (ST7).

  When the detection signal indicating the presence of the non-contact IC card 10 is input from the detection circuit 6b, the controller 2 opens the contact of the periodic power switch 4 and turns it off, and closes the contact of the main power switch 5 and turns it on. Thus, the periodic power switch 4 and the main power switch 5 are switched in conjunction with each other (ST8). As a result, the supply of drive power to the card detection means 6 is cut off, and drive power is supplied from the battery 3 to the data communication RF circuit 7, the card lock control circuit 8, and the electric lock 9 (ST9).

  When the driving power is supplied from the battery 3, the data communication RF circuit 7 communicates with the non-contact IC card 10 and the card information read from the non-contact IC card 10 is set in advance. The registered information (information permitting room entry: for example, room number, stay period, check-in date and time, etc.) is compared and collated (ST10). Then, the data communication RF circuit 7 outputs a control signal that prompts the card lock control circuit 8 to permit the unlocking of the electric lock 9 when it is determined that the contents of the card information may permit entry.

  When a control signal is input from the data communication RF circuit 7, the card lock control circuit 8 outputs an unlock signal to the electric lock 9, drives an actuator (not shown), retracts the dead bolt, and operates the electric lock 9. Is controlled to be unlocked (ST11). Thereby, the person who has the non-contact IC card 10 can enter the room by opening the door of the room.

  Thus, in the non-contact type card lock 1 of this example, in the standby state, the card 3 is periodically supplied with power from the battery 3 to intermittently output an electromagnetic wave, and this electromagnetic wave is output. The presence of the non-contact IC card 10 is identified based on the presence or absence of the accompanying resonance. During the identification of the card, power supply to the data communication RF circuit 7 for data communication with the non-contact IC card 10 is cut off, and the presence of the non-contact IC card 10 is confirmed. Then, power is supplied from the battery 3 to the RF circuit for data communication 7 to perform data communication with the non-contact IC card 10, and the card information of the non-contact IC card 10 and the registered information are compared and collated. The electric lock 9 is controlled to be unlocked based on the comparison result.

  Therefore, according to the non-contact type card lock of this example, the power consumption in a series of operations from the identification of the presence of the non-contact IC card, the reading of the card information, and the unlocking control of the electric lock is reduced to the necessary minimum. Compared with the prior art, it is possible to greatly reduce power consumption.

  In addition, when a contactless IC card is used and the presence of the card is identified and the card information is read in a contactless manner, the drive power is supplied only to the necessary circuits. The operation for inserting the card and the button operation for activating the card reader are not necessary, and the person who has the non-contact IC card can enter the detection area and can identify the card and read the card information. In addition, since the card information is read in a non-contact manner, the durability of the card is increased as compared with that using a magnetic card.

  In the non-contact type card lock 1 of this example, a configuration for detecting the non-contact IC card 10 (card detection unit 6), a configuration for performing data communication with the non-contact IC card 10 (data communication unit 7), electric The configuration for controlling the unlocking of the lock 9 (card lock control circuit 8) is divided into different configurations as logic. Thereby, the freedom degree of selection of RF circuit 7 for data communications increases. Further, the card detection RF circuit 6a and the data communication RF circuit 7 can identify the non-contact IC card 10 and read / write the card information with the same antenna. The antenna can be separated by the RF circuit 7 for use.

  Further, each component is divided as logic, and the data communication RF circuit 7 that operates at a constant voltage and the detection means (card detection RF circuit, detection circuit) are configured separately, so that the contactless IC card 10 The card detection frequency is not limited to 13.56 MHz and can be selected independently. In addition, it is possible to easily change the card detection power when identifying the non-contact IC card 10. Thereby, the setting of the detection range distance of the non-contact IC card 10 can be performed freely to some extent.

  Furthermore, since each component is divided as logic, power is not consumed simultaneously in identification of the non-contact IC card 10, data communication with the non-contact IC card 10, and card lock control. Less current consumption is required, and power can be saved.

  By the way, in the form mentioned above, although the non-contact-type card lock is integrated in a door, it is also possible not to incorporate in a door but to comprise in a separate unit, for example, to attach to the wall near a door.

Moreover, although the case where the non-contact type card lock 1 of this example was adopted as the door of each hotel room (guest room) was described in the above-described form, the card information of the non-contact IC card 10 is identified in a non-contact manner. As long as the comparison / comparison is performed, not only the doors of the rooms of the hotel but also various doors can be used for unlocking control. In this case, the card information of the non-contact IC card is read, and the unlock control and the lock control are repeated every time the read card information matches the registered information. For example, when the electric lock is unlocked, the card information of the non-contact IC card is read and if the card information matches the registration information, the electric lock is controlled to be locked, and then the card information of the non-contact IC card is read. electric lock if there is a match with the registration information is Ru is unlocked control.

  Further, in this example, the periodic power switch (first power switch) 4 and the main power switch (second power switch) 5 are controlled to be turned on / off by switching the contact point with a control signal from the controller (control means) 2. As described above, the controller 2 can be switched by controlling the periodic power switch 4 and the main power switch 5 on and off on software. Further, since the card detection RF circuit 6a and the data communication circuit 7 are separated as logic, they can be configured with a single substrate.

It is a block diagram which shows schematic structure of the non-contact-type card lock which concerns on this invention. (A), (b) It is the top view and side view of an escation in which the non-contact-type card lock concerning this invention is integrated. It is a flowchart figure which shows operation | movement of the non-contact-type card lock which concerns on this invention. It is a schematic block diagram of the card reader employ | adopted as the conventional card lock system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Non-contact card lock, 2 ... Controller (control means), 2a ... Period timer, 3 ... Battery, 4 ... Period power switch (1st power switch), 5 ... Main power switch (2nd power switch), 6 ... card detection means, 6a ... card detection RF circuit, 6b ... detection circuit, 7 ... data communication RF circuit (data communication means), 8 ... card lock control circuit (drive control means), 9 ... electric lock, 10 ... Non-contact IC card.

Claims (1)

Non-contact reading of card information of a non-contact IC card possessed by a person permitted to enter a building room, and unlocking and / or locking control of the electric lock of the door of the room based on the read card information. In non-contact card lock,
A battery for supplying drive power ;
Intermittently outputting an electromagnetic wave of the set card detection frequency Me pre by the supply of the drive power from the battery, of the non-contact IC card by the resonance of the LC resonance circuit of the noncontact IC card associated with the output of the electromagnetic wave Card detection means for identifying the presence,
And data communication with the contactless IC card by supplying the drive power from the battery when said card detecting means has identified the presence of the non-contact IC card, the contactless IC card of the card information and the previous SL electric lock Data communication means for comparing and comparing registration information indicating a condition for permitting control, and outputting a control signal for unlocking and / or locking the electric lock when the card information and the registration information match,
Control means having a cycle timer whose count value is reset every time a predetermined cycle is counted;
ON / OFF controlled by the control means for forming a first power supply line for periodically supplying driving power from the battery to the card detection means between the battery and the card detection means. A first power switch;
A second power source that is on / off controlled by the control means and that forms a second power supply line between the battery and the data communication means for supplying driving power from the battery to the data communication means. With a switch,
The control means controls the on / off of the first power switch at every interval when the cycle timer counts a predetermined cycle in the standby state, and the battery from the battery via the first power supply line. The card detection means periodically supplies drive power to the card detection means and turns off the second power switch to cut off the supply of drive power from the battery to the data communication means via the second power supply line. When the card detection means identifies the presence of the non-contact type IC card with the intermittent electromagnetic wave output from the means, the first power switch is controlled to be turned off and the battery passes through the first power supply line. The supply of drive power to the card detection means is turned off and the second power switch is controlled to be turned on in conjunction with this to supply the second power supply from the battery. Contactless card lock, characterized in that for supplying a driving power to said communication means via the down.

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