JPH0466980B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for clearing an unlocking key code in an electronic lock device.

[Conventional technology]

Generally, a magnetic card is read by a card reader installed at the entrance, and when the unlock code of the read magnetic card matches the unlock key code set in the memory, the unlock circuit is activated. Electronic locks have been known for a long time. Since this electronic locking device has greater safety advantages than mechanical locks, it is currently being put into practical use in facilities such as hotels that require a large number of locks.

[Problem to be solved by the invention]

By the way, for example, with the electronic locks installed in hotel guest rooms, the unlocking key code for each room must be changed each time guests change, but in that case, the key code for unlocking each room must be changed. It is necessary to clear or cancel the key codes that have been created.

However, if an unspecified person can clear the key code at any time, the electronic lock itself becomes meaningless, which poses a security problem.

Therefore, an object of the present invention is to make an electronic lock device easier to use while ensuring its safety.

[Means to solve the problem]

In order to achieve the above-mentioned problem, in the present invention, when the code of the magnetic card read by the card reader matches the unlocking key code set in the memory, the CPU activates the unlocking circuit, The electronic lock device that unlocks the door includes a detection means for detecting the open/closed state of the door by the CPU, and a detection means for detecting the open/closed state of the door detected by the detection means.
A first clear card on which an opening/closing code is written, which is set as a clearing condition for the unlocking key code of the CPU; A second clear card written with an opening/closing code set as a clearing condition for the clear card, and a multi-position switch that allows the first clear card and the second clear card to be read into the CPU. 1st switch
Permit reading of the clear card to the CPU,
At that time, only when the clear card read by the card reader is the first clear card and the door is open, the CPU executes the command to clear the unlocking key code. When the multi-position switch is enabled to read the second clear card into the CPU, only if the clear card read by the card reader is the second clear card and the door is closed. The method of clearing the unlocking key code in an electronic lock device is such that a command for clearing the unlocking key code is executed at the same time.

Note that clearing the key code above means, for example, canceling the flag in the memory that stores the key code, so that the code of the magnetic card read by the card reader is allowed to be written to the memory under predetermined conditions. It means to do something.

[Effect]

To clear the unlocking key code in such an electronic lock device, when rewriting the key code, first select the clear card to be used with the multi-position switch, and then use the selected clear card. Only if you have the clear card and know the door setting conditions of the opening/closing code written on the clear card,
The key code can be rewritten, and if even one condition is missing, the key code cannot be rewritten.

Therefore, for example, if an outsider learns the door settings or if you lose your clear card, you can change the position switch and use the other clear card to replace the lost clear card or door settings. Disable and deal with it.

〔Example〕

An embodiment of a method for clearing an unlocking key code in an electronic lock device of the present invention will be described below with reference to the drawings.

The method of clearing the unlocking key code in this embodiment is used, for example, in an electronic hotel lock device configured as shown in FIG.

The electronic lock device of the illustrated embodiment includes a card reader 1 that reads a code on a magnetic card;
The first auxiliary memory 2 stores the code read by the second auxiliary memory 3, the main memory 4 stores the unlock code, and displays that the contents of the first auxiliary memory 2 have been written to the main memory 4. A display 5, a microprocessor (CPU) 6 that performs signal processing and control according to a predetermined program, an unlocking circuit 7 that unlocks the door in response to an unlocking command from the CPU 6, and an unlocking circuit 7 that is installed at the entrance/exit door and instructs the CPU 6 to open and close the door. a detection means 9 for notifying the state; a first clear card on which an opening/closing code is written for setting the open state of the door detected by the detection means 9 as a clearing condition for the main memory 4 of the CPU 6; A second clear card written with an opening/closing code that sets the closed state as the clearing condition for the main memory 4 of the CPU 6, a third clear card that causes the CPU 6 to clear the main memory 4 regardless of whether the door is opened or closed, and
It consists of a multi-position switch 8 that changes the operating mode of the CPU 6.

This multi-position switch 8 has 16 switch positions, and the following modes and magnetic cards (hereinafter referred to as keys) are assigned to each of these positions.

0... Normal operation mode of the electronic lock 1... Grand master key setting position 2... First floor master key setting position 3... Second floor master key setting position 4... First area master key setting position 5... Second area master key setting position 6...Third area master key setting position 7...First made key setting position 8...Second made key setting position A...Emergency key setting position B...Test key setting position C ...Double lock/unlock key setting position D...First clear key setting position E...Second clear key setting position F...Third clear key setting position Among the above switch positions, "0" is read by the card reader 1. This is the normal operating mode position of the electronic lock, which opens the lock if the code of the key matched with the code set in the main memory 4, and the code of the guest key for guests is also set at this position. On the other hand, "1" to "C" are the setting switch positions of keys held by hotel employees at each level. To set the codes for the employee keys, switch the multi-position switch 8 to the position assigned to each key and, for example, set the CPU code as shown in Figure 2.
6, press each key (magnetic card) on the card reader 1 at least twice until the display 5 lights up.
This can be done by inserting the

That is, the first auxiliary memory 2, the second auxiliary memory 3,
Let the storage contents of the main memory 4 be A, B, and D, respectively,
Now, when the main memory 4 is allowed to write (step) and the key is read by the card reader 1 and stored in the first auxiliary memory 2 (step), the CPU 6 reads the contents of the auxiliary memory 2. Compare A with the main memory content D (step), A=
If D, the lock is unlocked (step), and if A≠D, the contents of the first auxiliary memory and the second auxiliary memory B are compared (step), and if A=B, the lock is unlocked. Transfer to main memory 4 (step),
On the other hand, if A≠B, the content A of the first auxiliary memory 2 is transferred to the second auxiliary memory 3 (step), and the process waits.

Then, when the same key is inserted into the card reader 1 again, the CPU 6 repeats the above steps, and if A≠D at this time, it repeats the steps further. Then, since the content A of the first auxiliary memory 2 that was transferred earlier is held in the second auxiliary memory 3, A=B, and the CPU 6 transfers the content A of the first auxiliary memory 2 and the main memory 4. (step). As a result, the key code of the magnetic card to be used as a key card is set in the main memory as an unlock code.

If you set the codes for "1" to "C" among these employee keys as described above and then set the multi-position switch 8 to "0", you can then press any of these keys. Each level can be unlocked by inserting it into a card reader.

Switch positions "D", "E" and "F" allow the door to be opened by the first, second and third clear keys set at switch positions "D", "E" and "F" respectively. In each door opening/closing condition, such as when the door is closed (when the inside lever of the door is operated), when the door is closed, and regardless of whether the door is opened or closed, '') to allow writing of the guest key code to the main memory 4, that is, to clear the memory location in the main memory 4 where the guest key code is set, and these switch positions When any of the keys set in 1 is inserted into the card reader 1 in the normal operation mode of the electronic lock, the CPU 6 stores the guest key code in the main memory 4, for example, as shown in the flowchart of FIG. After that, the code of the key inserted into the card reader 1 in this mode is stored in the main memory 4 as the guest key unlock code (unlock key code).

That is, the opening/closing codes of the first and second clear cards are set in advance at different predetermined addresses in the main memory 4, and in the normal operation mode of the CPU 6, it is possible to tell the CPU 6 whether the door is open or closed. In addition, if the opening/closing code read by the card reader 1 matches the opening/closing code of the first clear card set as above, and the door is open, the opening/closing code read by the card reader 1 Only when the opening/closing code matches the opening/closing code of the second clear card set as above and the door is closed, and only when the opening/closing code matches the code of the third clear card, will the CPU issue the above unlocking key code. Executes an instruction to clear the .

Once the guest key is set in this way, unless one of the clear keys (cards) mentioned above is inserted into the card reader 1 depending on whether the door is opened or closed, the CPU 6 will not be able to unlock the codes of other keys. Setting as code is not allowed. however,
Once the guest key code is set, if the door is not opened even once within a predetermined time, the code of the next key inserted into the card reader 1 is allowed to be set as the unlocking key code. It is also possible to do so.

This embodiment is configured as described above. For example, when guiding a new guest to each room and resetting the key code for that room, the multi-position switch 8 can be set to "D" or "E" or "F", set the door to open/close, load the clear key corresponding to the set switch 8 from the card reader 1, and set the multi-position switch to "0". The key for code setting is loaded twice from the card reader 1 and the key code is reset.

At this time, each time the selection of multi-position switch 8 is changed, the clear key to be used changes.
The conditions for opening and closing the door will change. Therefore, when changing the key code, you must know these three conditions. Also, each time you change the key code, you can change the setting method to make it difficult for outsiders to understand how to set the key code. For example, if you lose the clear key, you can change the setting method by switching the multi-position switch 8. It is also highly secure because the lost clear key can be immediately invalidated and another clear key can be used.

〔effect〕

By using the clearing method described above, the present invention can improve the safety (security) of an electronic lock device and make it easier to use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an example of an electronic lock device that can be used in an embodiment of the present invention, FIG. 2 is a flowchart of key code setting operation in the electronic lock device of FIG. 1, and FIG. It is a flowchart showing an example of clearing operation of the unlocking key code in one embodiment of the invention. 1...Card reader, 4...Main memory, 6...
CPU, 8...Multi-position switch, 9...
...detection means.

Claims (1)

[Claims] 1 When the code of the magnetic card read by the card reader matches the unlocking key code set in the memory, the CPU activates the unlocking circuit and the CPU activates the electronic locking device that unlocks the door. a detection means for detecting the open/closed state of the door, and a detection means for detecting the open state of the door detected by the detection means;
A first clear card on which an opening/closing code is written, which is set as a clearing condition for the unlocking key code of the CPU, and a state in which the door is closed detected by the detection means are used as the unlocking key of the CPU. A second clear card with an opening/closing code written thereon set as a code clearing condition, and the first clear card.
clear card and the CPU of the second clear card
a multi-position switch that allows reading of the first clear card into the CPU;
At that time, only when the clear card read by the card reader is the first clear card and the door is open, the CPU executes the command to clear the unlocking key code. When the multi-position switch is enabled to read the second clear card into the CPU, only if the clear card read by the card reader is the second clear card and the door is closed. 1. A method for clearing an unlocking key code in an electronic lock device, characterized in that the locking device is caused to execute a command for clearing the unlocking key code.