JPH0246747B2 - JOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic lock device, and in particular, even if the contents of a memory provided for storing an unlock code etc. for each lock are destroyed, the lock can still be unlocked if the correct key is present. This invention proposes a locking device that can be locked.

BACKGROUND ART Electronic locking devices have been developed for hotels and the like that can avoid economic losses or the risk of theft due to lost keys.

This locking device uses an electrically unlocked lock for each room, and the key is a magnetic card with an unlocking code recorded on it.
Hologram cards or punch cards are used, and these key cards are inserted into the data reader installed at the entrance of each room, and if the card has the correct code recorded on it, it is unlocked and the incorrect code is removed. The key card is designed to prevent unlocking if the card is incorrect or fraudulent, and the key card can be changed each time a key card is issued, so there is no need to change the lock even if the card is lost. Moreover, since a key card is issued each time the guest changes, there are advantages such as there is no substantial loss due to the card being lost.

There are two ways to verify the authenticity of the card read by the data reader in each room: one is done by a central management device, and the other is done by a terminal device installed in each room. In the former case, the latter roll verification method is not recommended because the waiting time tends to be long in devices with a large number of locks, such as in hotels, and the memory capacity of the central control device becomes large, making it uneconomical. many. In this local verification method, when a key card is issued, an unlock code is written into the memory in the terminal device and unlock control device installed in each room from the central control device, and the contents of this memory and the data reader are written. However, since IC memory is used as the memory, the stored contents may be destroyed due to a power outage (including momentary power outage) or a data writing error by the central control unit. Because of this, there is a risk that the guest may not be able to enter the room and trouble may occur between the guest and the guest.

The present invention has been made to solve this problem, and by configuring the unlocking code to be resent to the unlocking control device, it is possible to enter the room even though the key card is correct. An object of the present invention is to provide a locking device that can avoid a situation in which locking is not possible.

The present invention will be explained below based on drawings showing embodiments thereof. The drawing is a block diagram schematically showing a locking device according to the invention. In the figure, A is a central management device installed at a hotel front desk, etc., and B is an unlocking control device installed at the entrance of each room. The central control device A has functions such as sending an unlock code to the unlock control device B of each room, and controls the control unit 1, which is the control center of this device, and the room number of each room and the corresponding assignment. It also includes a non-volatile file memory 2 for storing the unlock code.

On the other hand, the unlocking control device B is composed of a microprocessor, etc., and when the key card 3 is inserted, the controller 5, which controls the entire device, reads this recorded information, and controls the read data and the insertion and escape of the key card 3. A data reader (card reader) 6 that transfers signals to the controller 5, a communication control unit 7 that transmits and receives data to and from the central management device A, and performs the necessary control, and a rewritable memory that stores an unlock code. 8. It consists of a timer 9 that starts counting when the key card 3 is inserted into the data reader 6, and a counter 10 that counts the number of times the key card 3 is inserted into the data reader 6. counter 10
is provided to count the number of times the key card 3 is inserted into the data reader 6, and when a set number of times is reached, a predetermined signal is issued to the controller 5. The timer 9 is reset by an end signal when the timer reaches its limit.

Others C are electric locks provided in each room, which are unlocked by an unlock permission signal ULS issued by the controller 5. Further, D is a lamp indicating that an unlocking signal is being generated, and is turned on in response to a signal from the controller 5.

Next, control by the control unit 1 and controller 5 will be explained. First, when issuing a key card, the data reader that constitutes the control unit 1 of the central management device A reads the unlock code already recorded on the key card, and the number of the room assigned to this key card is written to the data reader that constitutes the control unit 1 of the central management device A. The room number and unlock code are input using the keyboard and stored in the file memory 2 in combination, and the unlocking control device B for the room assigned using the keyboard input is used.
The unlocking control device B receives the unlocking code through the communication control section 7 and writes it into the memory 8 under the control of the controller 5. The guest who received the key card 3 goes to a designated room and inserts the key card 3 into a data reader 6. The data reader 6 reads the recorded information (unlock code) of the key card 3 and transmits it to the controller 5. The controller 5 compares this read information with the unlock code read from the memory 8, and if they match, it issues an unlock signal ULS for a certain period of time defined by the timer 9 to unlock the electric lock C. It is also reported by lighting lamp D. In this case, the counter 10 stores 1 key card.
The count is incremented by 1 due to the number of insertions, but it is reset when the timer 9 expires. On the other hand, if you use a wrong card, a fraudulent card, or if you are in the wrong room, the information read by the data reader 6 and the unlock code in the memory 8 will not match, and the unlock signal ULS will not be issued. Zu electric lock C
remains locked.

Therefore, in the device of the present invention, when the count value of the counter 10 reaches a predetermined number of times, in other words, when the key card is inserted a predetermined number of times within the time specified by the timer 9 (for example, twice in 10 seconds). (when the key card is inserted), the counter 10 issues a predetermined signal to the controller 5 as described above. Upon receiving this signal, the controller 5 requests the central management device A via the communication control section 7 to resend the data to be stored in the memory 8, that is, the unlock code assigned to that room. In response to this request signal, the central management device A reads an unlock code corresponding to the requested room number from the file memory 2, and sends it to the unlock control device B. Unlocking control device B
The communication control section 7 receives this, writes it into the memory 8 as before, and simultaneously operates the data reader 6 to collate it with the information read.

Now, if the stored contents of the memory 8 have been destroyed due to a momentary power outage or the like, even if the key card is correct, the lock will not be unlocked by inserting the key card 3. The guest who has the correct key card becomes suspicious and immediately reinserts the card that has been ejected from the data reader 6 into the data reader 6 (or in accordance with the instructions). Then, as mentioned above, the correct unlock code is resent to the unlock control device B for that room, and this is written into its memory 8 and compared with the read information, so as long as the key card is correct, the unlock signal ULS will be sent. It will be issued and unlocked. Of course, if the card is fraudulent, the lock will not be unlocked even if the key card is inserted again. Since the unlocking code is correctly written in the memory 8, unlocking will be performed smoothly from then on.

The lock device reads the unlock code recorded on the key card and the unlock code recorded on the key card, compares the read unlock code with the unlock code stored in advance, and calculates the verification result. In a locking device equipped with an unlocking control device that allows unlocking in response to a key card, and a central management device that sends an unlocking code to be stored in the unlocking control device, means for counting the number of operations that require a code to be read; means for reporting this to a central control device when the counted value reaches a predetermined value; and an unlocking control device when the central control device receives this. The device is equipped with a means for sending an unlock code to the user, and a means for comparing the unlock code with the unlock code recorded on the key card to determine whether or not unlocking is permitted. While enjoying the advantages of the local verification method, which is quick and economical to configure the device, even if the contents of the terminal device's memory are destroyed, it can be recovered at the required time, and the key usage is This has the effect of not causing any inconvenience to people. In addition, it is advantageous in terms of no need for battery maintenance and economical efficiency, compared to a method that uses floating-charged batteries to back up the power supply to prevent the storage contents of the terminal device's memory from being destroyed due to momentary power outages. In particular, when using a power supply backup, complicated file maintenance is required when the battery discharge time is exceeded, but the present invention has excellent effects such as eliminating such a need.

[Brief explanation of drawings]

The drawing is a schematic block diagram showing one embodiment of the invention. A...Central management device, B...Unlock control device, C...Electric lock, 1...Control unit, 2...File memory, 3...Key card, 5...Controller, 6...
Data reader, 7...Communication control unit, 8...Memory, 9
...Timer, 10...Counter.

Claims (1)

[Scope of Claims] 1. A key card with an unlock code recorded thereon, the unlock code recorded on the key card is read, and the read unlock code is compared with a pre-stored unlock code. , a locking device comprising an unlocking control device that permits unlocking in accordance with a verification result, and a central management device that sends an unlocking code to be stored in the unlocking control device, which is recorded on a key card. A means for counting the number of operations to read a certain unlock code, a means for reporting this to a central control device when the counted value reaches a predetermined value, and a means for notifying the central control device when the central control device receives this. It is characterized by comprising means for sending an unlocking code to the lock control device, and means for comparing the unlocking code with an unlocking code recorded on a key card to determine whether or not unlocking is permitted. Locking device.