JPH0441878A - Electronic lock device - Google Patents

Abstract

PURPOSE:To improve safety by providing a display means, a carry-up key, a carry-down key, simultaneously operating the carry-up key and the carry-down key to input an indicated symbol, and comparing it with a preliminarily registered memory symbol. CONSTITUTION:An operation panel 1 is provided with an indicator 2, a carry-up key 3, and a carry-down key 4. An electric circuit is provided with switches 5, 6 operated by the keys 3, 4, clock generator circuits 7, 8, an input key judgment circuit 9, a timer 12, a memory symbol registration circuit 15, and a memory symbol collator circuit 16. The keys 3, 4 are operated while seeing a symbol displayed on the indicator 2, a desired symbol is stored from the circuit 9 to the circuit 16 by simultaneously operating the keys 3, 4. The symbol of the circuit 16 is compared with the memory symbol of the circuit 16, and when they are conformed to each other, unlocking signal is outputted for unlocking. Thus, safety can be improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an electronic lock device.

[Conventional technology]

Electronic locks that are unlocked by inputting the same symbol as a pre-registered password code consisting of a combination of one or more symbols with a key are those that input the password code using a numeric keypad. It has been known. In addition, as an alternative to the numeric keypad type, it consists of one input key, one set key, and a symbol display, and the number is counted according to the time or number of times the input key is operated, and the number is input using the set key. A so-called serial key type electronic lock device has also been proposed.

[Problem to be solved by the invention]

However, with one-key numeric keys, because certain keys are operated frequently, certain keys may become dirty and the PIN code may be visible.
It had the disadvantage of being easily torn. In addition, the serial key type has the advantage that it eliminates the drawback that the password code is easy to find out and improves reliability by reducing the number of keys, but it requires a large number of input operations and is difficult to operate. It had the disadvantage of being bad. .

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an electronic lock device that has no risk of a password being discovered, is easy to input, and has high reliability.

[Means and effects for solving the problem] One of the electronic lock devices according to the present invention is capable of locking a lock by inputting the same symbol as a password consisting of a combination of one or more symbols registered in advance using a key. An electronic lock device adapted to be unlocked, comprising a display means for displaying a symbol, an up key, a down key, and each time the up key or the down key is operated, the symbol displayed on the display means is incremented. or carry down, and each time the carry-up key and the carry-down key are operated simultaneously, the symbol displayed on the display means is memorized, and the combination of one or more of the memorized symbols and a pre-registered password code are stored. and an electric circuit that outputs an unlocking signal when the two match.

According to the above configuration, all the keys are operated, so there is no risk that a specific key will become dirty and the password code will be discovered. The input operation is easy because you only have to do this, and the reliability is also high because there are only two operation keys.

Another aspect of the electronic lock device according to the present invention is that, in addition to the above configuration, when the electric circuit continues to operate the advance key and the decrease key simultaneously for longer than a preset time, Since it also has a function to cancel previously stored symbols and return to the initial state, correction operations are also very easy.

〔Example〕

Hereinafter, the present invention will be described in detail based on an illustrated embodiment.

FIG. 1 is a front view of an operation panel of an embodiment of an electronic lock device according to the present invention. A display 2 consisting of a display tube or the like, an up key 3 for moving up the symbol displayed on the display 2, and a down key 4 for moving down the symbol displayed on the display 2 are provided.

FIG. 2 is a block diagram of the electric circuit of the above embodiment. In the figure, 5 and 6 are the advance key 3 and the decrease key 4, respectively.
These switches are operated by the switch, and are turned on when the advance key 3 and the decrease key 4 are operated, and are turned off when the operation is stopped.

7 and 8 respectively operate - each time the advance key 3 and the decrease key 4 are operated, that is, each time the switches 5 and 6 are turned on.
This is a clock generation circuit that outputs signals at predetermined time intervals when the keys 3 and 4 are continuously operated. Reference numeral 9 denotes an input key determination circuit which outputs a signal each time the advance key 3 and the decrease key 4 are operated simultaneously, that is, each time the switches 5 and 6 are turned on at the same time. 10
and 1] are gates which, when signals are input from the clock generation circuits 7 and 8, respectively, and when the signal from the input key determination circuit 9 is not input, input the signals from the clock generation circuits 7 and 8, respectively. It is output as is, and when the signal from the input key determination circuit 9 is input, the signals from the clock generation circuits 7 and 8 are not allowed to pass through. 12 is a timer which outputs a signal when the signal from the input key determination circuit 9 is continuously input for a predetermined period of time. 13 is a counting circuit that sequentially counts up or down the symbol or symbol string used as a password; it counts up when a signal is input from gate 10, and counts down when a signal is input from gate 11; , the counting state at that time is outputted one after another, and when a signal is further input from the timer 12, it is reset to the initial state. Incidentally, when using numbers in decimal 10 as the password, a counter in decimal 10 can be used as the counting circuit 13. 14 is a decoder/driver which receives a signal from the counting circuit 3 and causes the display 2 to display the counting state of the counting circuit.

Reference numeral 15 denotes a password registration circuit comprising, for example, a non-volatile memory, in which a password consisting of one or a combination of symbols is registered in advance. Reference numeral 16 denotes a password verification circuit consisting of a memory, a comparator, etc., which temporarily stores the output signal from the clock counting circuit 13 into which the signal from the input key determination circuit 9 is input, and stores the stored output data, that is, one or The combination of multiple symbols is compared with the password code registered in the password code registration circuit, and when the two match, an unlock signal is output to an electric lock (not shown), and when a signal from the timer 12 is input. is reset to its initial state.

Since the present embodiment is configured as described above, when the advance key 3 or the decrease key 4 is operated while looking at the symbol displayed on the display 2, the switch 5 or 6 is turned on and the tarot generating circuit 7 or 8 is turned on. A signal is sent to the counting circuit 13 via the gate 10 or 11 to change the counting state each time, and the counting state at that time is sequentially displayed on the display 2 via the decoder/driver 14.

If the operator operates both keys 3 and 4 at the same time when a desired symbol is displayed, switches 5 and 6 will turn OFF at the same time.
Since the input key judgment circuit 9 outputs a signal, the gates IO and 11 stop inputting the signal to the counting circuit 13, and the password verification circuit 16 outputs the signal from the counting circuit 13 at that time. Memorize the signal. and,
When the above operation is repeated for the number of digits of the PIN code, the PIN verification circuit 16 stores the output data from the counting circuit 13, that is, the combination of one or more symbols, and the point in time when this matches the number of digits of the PIN code. The password is read from the password registration circuit 15, the output data and the password are compared, and if the two match, an unlock signal is output and an electric lock (not shown) is unlocked.

In addition, if a symbol different from the PIN code is entered by mistake, if both keys 3 and 4 are continued to be operated at the same time for longer than a preset time, a signal will be output from the timer 12 and the counter circuit 13 and the PIN code will be output. Since the symbol verification circuits 16 are all reset to the initial state, the display on the display 2 changes to the initial display, and the output data stored in the password verification circuit 16 is canceled. Therefore,
The above input operation can be performed again.

It goes without saying that the password registered in the password registration circuit 15 can be rewritten using an input means (not shown).

The operating principle of this embodiment has been explained above, but in this embodiment, all keys are operated, so there is no risk of a specific key getting dirty and the password being discovered, and key operations are not allowed. Input operations are easy because only one or both of the advance key 3 and the decrease key 4 are operated, and since there are only two operation keys, the reliability is also high.

Further, in this embodiment, by continuing to operate the advance key 3 and the decrease key 4 at the same time for longer than a preset time, the symbols stored up to that point are canceled and the initial state is returned. Therefore, correction operations are also very easy.

In addition, each time one output signal from the counting circuit 13 is input, the password code verification circuit 16 sequentially compares it with the symbol of the corresponding digit of the registered password code, and determines whether each output signal corresponds to the symbol of each digit. The configuration may be such that an unlocking signal is output when all match.

〔Effect of the invention〕

As described above, the electronic lock device according to the present invention has important practical advantages in that there is no risk of the password code being discovered, the input operation is easy, and it is highly reliable.

[Brief explanation of drawings]

FIG. 1 is a front view of an operation panel of an embodiment of an electronic lock device according to the present invention, and FIG. 2 is a block diagram of an electric circuit of the above embodiment. 1...Operation panel, 2...Display unit, 3...
Advance key 4...Downward key 5, 6...
・Switch, 7, 8...Clock generation circuit, 9...
・・Input key judgment circuit, 10, 11, ・・・gate,
12...Timer 13...Counting circuit, 14...
...Decoder/driver 15...PIN code registration circuit, 16...PIN code verification circuit.

Claims (2)

[Claims] (1) In an electronic lock device that is unlocked by inputting the same symbol as a password code consisting of one or more pre-registered symbols using a key, a display means for displaying the symbol; , an up key, a down key, and each time the up key or the down key is operated, the symbol displayed on the display means is moved up or down, and each time the up key and the down key are operated at the same time, the symbol displayed on the display means is an electric circuit that stores the symbol displayed on the display means, compares the stored combination of one or more symbols with a pre-registered password, and outputs an unlocking signal when the two match; An electronic lock device comprising: (2) If the electric circuit continues to operate the advance key and the decrease key simultaneously for longer than a preset time, the electric circuit also has a function that cancels the symbols stored up to that point and returns to the initial state. The electronic lock device according to claim 1, characterized in that: