JPH0441230B2 - - Google Patents

Description

[Detailed Description of the Invention] In the conventional numeric keypad type electronic lock, while an unspecified person can unlock the electronic lock using a password,
When locking a lock for a certain period of time, the only way to lock it is to use a different lock or set a different password for that period.

For example, if there are multiple accountants and one person in charge, it may be desirable to use a system that prevents the person in charge from unlocking items that are locked by the person in charge.

The present invention uses two PIN numbers; one PIN B is the same as the PIN number for conventional electronic locks and is used by an unspecified person to unlock the electronic lock; Number A is a PIN number that has a locking and unlocking function superior to PIN B, which has been improved to make it easier to manage the electronic lock.

Next, one embodiment of the present invention will be described in detail with reference to the drawings.

Figure 1 shows the configuration of the current system.

1 is LCD (liquid crystal) and LED (light emitting diode)
consists of numbers entered from the numeric keypad 2,
It is used to display PIN number A and PIN number B on the LCD, and to display information such as locking, unlocking, and battery level check results on the LED.

2 is a keyboard having numbers "0" to "9""C" and "#".

3 is a circuit that determines whether the number entered from the numeric keypad 2 is the same as the password A stored in 4.

4 is a storage unit for the password A, and there is also a method of storing numerical data set on the board using a diode, resistor, digital switch, etc., or inputted in advance from the keyboard 2 in the memory.

5 is a circuit that identifies whether the number inputted from the numeric keypad 2 is the same as the password B stored in 6.

6 is a storage unit for the password B.

7 is a circuit that maintains the mode state of lock mode and unlock mode, and when the numbers inputted from the numeric keypad 2 match the PIN number A, the PIN identification section 3 outputs a match signal for the PIN number A; Every time a match signal for the password A is output, the lock mode and the unlock mode are alternately switched such that if the mode is the lock mode, the mode is changed to the unlock mode, and if the mode is the unlock mode, the mode is changed to the lock mode.

Reference numeral 8 denotes a circuit that controls the match signal of the PIN number B according to the mode state of 7.

9 is the output section, which usually includes a solenoid, motor,
It is connected to a relay, etc.

Assume that the initial state is the lock mode state. The LED indicating the lock status is lit on the display section 1, and when numerical data is entered using the numeric keypad 2, the PIN A identification section 3 and the PIN B identification section 5 will confirm the entered digits. When the permutation and digits of are checked and match the preset password A and password B, a matching signal is output from the password A identification section 3 and the password B identification section 5. However, in lock mode,
PIN number B output from the PIN number B identification section of 5
The coincidence signal is controlled by the password B coincidence signal control section 8, and is not output to the output section 9. In other words, in the lock mode state, PIN number B
is invalid, and only the password A is valid.

In the lock mode state, when numbers with the same sequence and digits as the PIN stored in the PIN A storage section 4 are entered from the numeric keypad input section, the PIN A matching signal is sent from the PIN A identification section 3. 9
The lock is output to the output section 7, and the lock is unlocked, and the mode state of the mode holding section 7 changes from the lock mode to the unlock mode. Accordingly, the LED indicating the lock mode on the display section 2 goes out, and the LED indicating the unlock mode lights up.

In the unlock mode, if the permutation of the numbers input from the numeric keypad input section 2 matches the number in the PIN B storage section with the number of digits of 6, a matching signal is output from 5, passes through 8, and is output to 9 to unlock the door. will be held.

Further, if the permutation of the numbers input from 2 and the number of digits match the password A of 4, the mode held at 7 becomes the lock mode. However, at this time, the lock will not be unlocked.

In this way, by having two or more PIN numbers and having one of the PIN numbers have a management function for the electronic lock system, it is easier to manage the electronic lock system, and the reliability of the electronic lock system is improved. can be improved.

For example, the superior PIN A is known only to the person in charge of the entire operation, and the lock is unlocked and locked at the start and end of work, and each person in charge knows the PIN B so that they can open and close the lock only during work. It is available and very convenient.

[Brief explanation of drawings]

The figure is a block diagram of an electronic lock system according to the present invention. Explanation of symbols, 1...Display section, 2...Numeric keypad input section, 3...Password A identification section, 4...Password A storage section, 5...Password B identification section, 6...Password B Storage unit, 7...mode holding unit, 8...PIN number B match signal control unit, 9...output unit.

Claims (1)

[Claims] 1 Display section, numeric keypad input section, first PIN identification section, first PIN storage section, second identification section, second storage section, mode holding section, and lock opening/closing section and a control section that controls transmission of the coincidence signal from the second identification section to the output section according to the mode of the mode holding section.
When the password matches the password, a matching signal is generated from the first identification section, and the mode of the mode holding section is changed from locked to unlocked or from unlocked to locked state, and when changing from locked to unlocked, outputs an unlock signal. The second identification unit generates a match signal when the input from the numeric keypad matches the second PIN number, and the unlocking output is generated only when the mode in the mode holding unit is in the unlocked state. An electronic lock characterized by: