JPH0384179A - Secret electric lock operator - Google Patents

Abstract

PURPOSE:To prevent continuous mischievous operations by a method in which a sensor to detect the opening or closing of an operator cover and a circuit to hold a switching circuit for a given time period after opening the cover are provided, and unlocking signals are allowed to output only during the output period of holding signal. CONSTITUTION:A switch 16 to detect the opening or closing of a cover 11a is provided to an operating board 12 on which ten keys are arranged. A timer circuit to be actuated by the opening signal of the switch 16 is provided, and a holding signal is output for a given time period to the switching circuit which send a recitation number input only during the output period of holding signal to the judging circuit of recitation number. When the recitation number coincides, unlocking signal is putput from an unlocking controller. Also, when time is up during operation, the sending of recitation number is stopped to forbid unlocing. Therefore, the same operation is made again. Illegal unlocing can thus be prevented without interrupting usual operations.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a secret electric lock operation in which unlocking of an electric lock is controlled by operating a numeric keypad or operation keys and inputting a password. Take time to improve the equipment.

[Prior Art] As shown in FIG. 7, this type of secret electric lock operating device has a numeric keypad on the operation surface 102 of the main body 101 of the secret electric lock operating device 100 for inputting numbers from O to 9. 103..., an unlock switch 105 for unlocking an electric lock (not shown), and a k-th start switch 104 for starting a key input operation. In this case, if you first operate the start switch 104, then input the predetermined password in sequence, and then operate the unlock switch 105, the separately installed power switch will be unlocked only when the password is entered correctly. The lock can be unlocked, and a cover 101alt is provided on the operation surface 102 to protect each key.

Moreover, unlike such an electric lock operating device 100, the eighth
The figure shows multiple operation keys 203 instead of a numeric keypad,
Indicator lights 20 that display numbers by changing randomly without ii* corresponding to each of these operation keys 203
6... is shown on the operating surface 202 of the main body 201. When performing an unlocking operation using this secret electric lock operating device 200, when the start switch 104 is operated, the screen is displayed. light 20
6. The numbers from O to 9 are displayed randomly without duplication, and the operation key 20 is pressed according to this display.
3 to input the password, and then operate the unlock switch 205, the separate electric lock is unlocked only when the password is correctly input. Note that 201a is a cover provided to protect each key provided on the operation surface 202.

Such a secret electric lock operating device 100, 200, when the password input operation is not performed within a predetermined period of time after operating the start switch 104, 204, the electric lock operating device 100, 200 The electric lock is designed to cut off the power to the electric lock to prevent inconveniences such as the electric lock being unlocked due to repeated tamper operations.

However, in the electric lock operating device 100, 200, although the above-mentioned measures are taken, if the start switch 104 or 204 is operated again after a predetermined period of time has elapsed, the state of waiting for input of the PIN can be returned to the state as many times as desired. As a result, the electric lock may be unlocked due to repeated tamper operations. Therefore, there is a need for the development of a secret electric lock operating device that can effectively prevent such inconveniences without impairing operability.

[Problems to be solved by 0 Ming] In view of the above circumstances, the present invention is proposed by providing a cover on the operating surface of an electric lock operating device, and when the cover is opened, the cover is closed for a predetermined period of time. It is possible to enter a PIN number and perform unlocking operations, and after a predetermined period of time has elapsed, the cover must be closed once and the user is prompted to operate the lock again. To provide a secret electric lock operating device which prevents an electric lock from being unlocked due to continuous mischievous operations.

[ff! Means for Solving If] The present invention according to claim 1 proposed to achieve the above object has an operation surface in which at least a numeric keypad and an unlock switch are arranged, and a password can be set by operating the numeric keypad. A secret electric lock operating device that unlocks a separately placed electric lock by inputting a number has a cover that is attached to the operation surface so that it can be opened and closed, and a door that opens and closes depending on the opening and closing operation of the cover.

An open/close detection switch that outputs a close detection signal, a password setting section that sets a password unique to the operating device, and a detection signal output from the open/close detection switch that is activated by the detection signal and held for a predetermined period of time. A timer circuit that outputs a signal while stopping the output of a hold signal in response to a close detection signal output from the open/close detection switch, and a timer circuit that outputs a PIN code input by operating the numeric keypad and a PIN code set by the PIN setting section. A PIN number discrimination circuit that compares and discriminates the number and outputs a match determination signal, simultaneously receives a match determination signal output from the PIN number discrimination circuit and an unlock drive signal outputted by operation of the unlock switch. The locking device is configured to include an unlocking control section that outputs an unlocking signal from time to time, and a switching circuit that allows the PIN number discriminating circuit to perform comparison determination only during wI when the holding signal is output.

Further, in the present invention according to claim 2, the operation surface has a plurality of operation keys instead of the numeric keypad, and a display that randomly changes the number display in correspondence with these operation keys without overlapping each other. It is said to be equipped with a light.

[Function] In the electric lock operating device of the present invention as set forth in claim 1, when the cover provided on the operation surface is opened, the open/closed state of the cover is detected by the open/close detection switch, and an interval detection signal is output to the timer circuit. During this time, the timer circuit is activated by the detection signal and outputs a holding signal to the switching circuit for a predetermined period of time.

The switching circuit allows the PIN entered using the numeric keypad to be transmitted to the PIN identification circuit during the period when the holding signal is output from the timer circuit. and the password set by the password setting section, and when these passwords match, a coincidence determination signal is output to the unlocking control section. In the unlocking control section, when an unlocking drive signal is input by operating the unlocking switch during a period when a match determination signal is being output from the PIN number determining circuit, an unlocking signal is output to a separate electric lock. Unlock it.

Additionally, if the timer circuit times up after the cover is opened and the output of the hold signal stops, the transmission of the PIN number entered using the numeric keypad to the PIN identification circuit is blocked, so unlocking operations are prohibited. be done.

However, if you listen again after closing the cover, the timer circuit will be activated again and the holding signal will be output to the switching circuit, allowing you to unlock the door in the same way as above.
Continuous mischievous operations can be effectively prevented, and it is also possible to prevent the lock from becoming impossible to unlock due to a delay in the operation after opening the cover.

In the present invention as set forth in claim 2, the operation surface includes a plurality of operation keys instead of the numeric keypad, and an indicator light that randomly changes the number display in correspondence with these operation keys without duplicating each other. The present invention differs from the electric lock operating device described in claim 1 in that it has the following features, and its functions are the same.

[Example code] The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an electric lock operating device l of the present invention according to claim 1.
The external appearance of one embodiment is shown in a perspective view, and FIG. 2 shows the structure using a sectional view.

This electric lock operating device l has 0 to
A numeric keypad 13 up to 9, a start switch 14, and an unlock switch 15 are provided, and an open/close detection switch 16 is provided at the top of the operation surface 12, and when the cover 11a is closed, the As shown in FIG. 2(b), the knob lea of the opening/closing detection switch 16 is pushed in by the cover 11a and outputs a closing detection signal, and when the cover 11a is opened, the knob 16a protrudes as shown in FIG. 2(b). It has a structure that outputs a detection signal.

Reference numeral 14 denotes a start switch, and by operating this start switch 14, electricity is started to be applied to each part including the numeric keypad, thereby enabling the unlocking operation. Also,
Reference numeral 18 indicates a printed circuit board on which the numeric keypad 13, ♦, start switch 14, unlock switch 15, and opening/closing detection switch 17 are mounted and fixed, and on which an internal circuit is provided.

The internal structure of the secret electric lock operating device l having such a structure is shown in a block diagram in Fig. 3, and the parts corresponding to those in Figs. A symbol is attached.

In the figure, Ilc is a timer circuit that receives a gap detection signal from the gap detection switch 16 and outputs a holding signal to the switching circuit 11b for a predetermined period of time (approximately 10 seconds in this embodiment). When the cover 11a is closed and a close detection signal is input, the output of the holding signal to the switching circuit 11b is cut off. The switching circuit 11b transmits the input signal of the numeric keypad 13 to the password determination circuit lid during the period when the holding signal is input, and determines whether the input signal matches the password set by the password setting section 11e, When the passwords match, a match determination signal is output to the unlocking control section 11f. When the unlocking switch 15 is operated during the period when the coincidence determination signal is being output, an unlocking drive signal is output to the unlocking control section 11f, and the unlocking control section 11f receives these coincidence determination signals and the unlocking driving signal. The configuration is such that an unlock signal is output to an electric lock (not shown) when both are input at the same time.

Therefore, in the electric lock operating device 1 of this embodiment, the cover lla
When a predetermined period of time has elapsed, the switching circuit 11b blocks the transmission of key inputs from the numeric keypad 13 to the password discrimination circuit lid, so even if the start switch 14 is operated again, the unlocking operation will not be performed. Therefore, continuous mischief can be effectively prevented, and if there is a delay in inputting the PIN after opening the cover 11a, by closing the cover 11a and then opening it again, you can enter the password again using the numeric keypad 13. Since it is possible to input the password, there is no loss of operability.

In the above embodiment, the opening/closing detection switch 17 is configured as a mechanical switch, but the configuration is not limited to this type of configuration. It is also possible to perform open/close detection using a magnetic switch configuration in which a magnet (not shown) is provided on a corresponding cover 11a.

Next, FIG. 4 shows a more detailed circuit configuration of such a mistake lock operating device 1, and parts corresponding to those in FIGS. 1 to 3 are given the same reference numerals.

In the figure, l1g is a BCD conversion circuit for converting the signal from the numeric keypad 13◆・ into a binary number and outputting it to the password discrimination circuit 11d.In the password setting section 11e, the four-digit password is input to each number setting switch. The settings are made in binary numbers using SWI to SW4. Further, when the open/close detection switch 16 connected to the timer IC (ICI) is opened, the timer circuit 11c detects the timer IC (ICI).
), outputs a holding signal to the switching circuit 11b for a predetermined time determined by the resistor R3 and the capacitor C2, energizes the transistor TR3, and presses the numeric keypad 1.
3. The password entered from... is sent to the BCD conversion circuit 11g.
This allows the data to be converted and transmitted to the password identification circuit lid.

Although the start switch 14 is not shown in this circuit example, the configuration is such that energization of each circuit section is permitted by operating the start switch 14, and after a predetermined time determined by the timer circuit 11c has elapsed. It is also possible to have a configuration that cuts off the power to each of these circuit parts,
In this way, it is possible to save power.

FIG. 5 shows the operation of the electric lock operating device 1 shown in FIG. 4 using a time chart.The operation will be further explained with reference to this time chart.
When the switch is opened, a gap detection signal (a signal at the rLJ level in this embodiment) is sent from the open/close detection switch 16 to the timer circuit 11c.
The timer circuit 11c outputs a holding signal to the switching circuit 11b for a predetermined time (in this embodiment, the time determined by the resistor R3 and the capacitor C2, which is approximately 10 seconds) (see FIG. 5). b) Reference), the transistor TR3 is made conductive. Since power is supplied to the BCD conversion circuit Lg between the ribs where this transistor TR3 is conductive, the input number of the most significant digit of the password by operating the numeric keypad 13 is the terminal A3 to A of the password discrimination circuit 11d.
On the other hand, the control IC (
IC2) is in a reset state and only the QO terminal outputs the "H" level, and the highest digit PIN set by the number setting switch SWI of the PIN setting section lie is output from the terminals E3 to 11 of the PIN discrimination circuit 11d. When the PIN numbers are input to EO and match, the digit match signal output terminal OUT is output.
A digit match signal is output to the CE terminal of the unlocking control unit 11f, and the terminal Ql instead of the terminal QO changes to the rHJ level, and a match of the second digit password is determined (Fig. 5 (c) - (h) #sho).

In this way, each digit of the password is sequentially determined, and if all four digits of the password match, the terminal Q of the unlocking control unit 11f
4 becomes the rHJ level (see Fig. 5 (C) to (k)), by operating the unlock switch 15, the relay RY is driven via the transistor TR2, and the relay contact (not shown) of this relay RY is driven. ), the separately placed electric lock is unlocked (Fig. 5 (jl) to (n) M). On the other hand, when this unlock switch 15 is operated, the unlocking operation is performed as described above. At the same time, when the capacitor CI is charged to a predetermined level through the resistor R1, the control IC (IC2) of the unlocking control section is reset (see Fig. 5).
fb) See? ! 4).

Also, if the timer circuit 11c times out after a predetermined period of time has elapsed while entering the PIN,
The output of the holding signal to the switching circuit 11b is stopped, and the input from the numeric keypad 13 is cut off.
By closing and then reopening the timer circuit 11
Since c is restarted and outputs a holding signal, the password can be input again.

The C5 terminal of the BCD conversion circuit 11g outputs an "H" level when the numeric keypad is operated, and at the same time outputs a signal for discrimination to the PIN discrimination circuit lid, and resets the unlocking control section 11f. A signal is being output, and the password entered using the numeric keypad 13 is displayed in the password setting section li.
When a digit that does not match the password set in e is generated, a digit match signal is not output and the transistor TRI is not driven, so the reset terminal R of the unlocking control section 11f is
A reset signal is input to , all matches of the passwords input so far are canceled, and the terminal QO returns to the "H" level state. In other words, in the electric lock operating device l of this embodiment,
The last operated 4-digit PIN is the PIN setting section 11
The unlocking operation is only possible when the password matches the password set in e.

Next, FIG. 6 is a perspective view showing the external appearance of an embodiment of the secret electric lock operating device of the present invention as set forth in claim 2. The operation keys 23..., the indicator lights 27 provided corresponding to these operation keys 23..., and the start switch 2
4. An unlock switch 25 is provided, and an open/close detection switch 26 having a knob 26a that outputs a latch and rIIJ detection signal in accordance with the opening/closing operation of the cover 21a is attached to the operation surface. As for the operation,
Since it is the same as the electric lock operating device 1 according to the first aspect, the explanation will be omitted.

Moreover, in FIG. 6a, a reed switch 28 is provided on the operation surface 22 in place of the opening/closing detection switch 26, and the cover 21 a
This shows an example of a structure in which a magnet is provided at 94. Open/close detection signals are output when the magnet 29 is brought into contact with and separated from the reed switch 2 by opening/closing the cover 21a, and the operation is as described above. Since this is the same as the embodiment, the explanation will be omitted.

[Effects of the Invention] According to the present invention as set forth in claim 1, key input operations using the numeric keypad are blocked when a predetermined period of time has elapsed after the cover of the electric lock operating device is opened. This prevents the electric lock from being unlocked, and even if a predetermined period of time has elapsed during normal operation, the lock can be unlocked again by closing and reopening the cover, improving operability. It is possible to provide a secret electric lock operating device that takes countermeasures against tampering and the like without impairing the operation of the lock.

According to the present invention as set forth in claim 2, the same effects as those described above can be achieved by having an operation key and an indicator light instead of the numeric keypad of the secret electric two-lock operating device as set forth in claim 1. We can provide a secret electric lock operating device that performs the following functions.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the external appearance of the secret electric lock operating device of the present invention according to claim 1, and FIGS. 2(a) and 2(b)
) is a sectional view showing its internal structure, Fig. 3 is a block diagram showing its internal structure, Fig. 4 is its detailed circuit diagram, and Fig. 5 is a sectional view showing its internal structure.
The figure is a time chart explaining its operation, FIGS. 6 and 6a are perspective views showing the external appearance of the secret electric lock operating device of the present invention according to claim 2, and 71st! 1 and 8 are perspective views showing the outside lines of a conventional secret electric lock operating device. [Explanation of symbols 1, 2. 2'...Secret electric lock operating device 11a...Cover 11b...◆Switching circuit 11c...Timer circuit 11d...Password discrimination circuit lie...Password setting section 11f...Unlocking control Part 12... Operation surface 13◆◆・Numeric keypad 15◆・・Unlock switch 16.26・Open/close detection switch 23・・Operation key 27#・・Indicator light 28◆・・Reed switch 29◆・・・masonette

Claims (2)

[Claims] (1) A secret electric lock operating device that has an operation surface with at least a numeric keypad and an unlock switch arranged, and allows a separately placed electric lock to be unlocked by inputting a PIN number by operating the numeric keypad; a cover attached to the top so that it can be opened and closed; an open/close detection switch that outputs an open/close detection signal in response to the opening/closing operation of the cover; a password setting section for setting a password unique to the operating device; a timer circuit that is activated by an open detection signal output from the switch and outputs a holding signal for a predetermined period of time, and stops outputting the holding signal by a closed detection signal output from the open/close detection switch; a PIN number discrimination circuit that compares and discriminates the PIN entered by operating the numeric keypad with the PIN set by the PIN setting section and outputs a match determination signal; and a match determination circuit that outputs a match determination signal from the PIN number determination circuit. an unlocking control section that outputs an unlocking signal when simultaneously receiving the signal and an unlocking driving signal output by operating the unlocking switch; A secret electric lock operating device characterized by comprising a switching circuit that allows comparison and discrimination by a discrimination circuit. (2) The operation surface is equipped with a plurality of operation keys in place of the numeric keypad, and indicator lights that randomly change the number display in correspondence with these operation keys without overlapping each other. The secret electric lock operating device according to claim 1, characterized in that: