JPH04108970A - Operational controller - Google Patents

Abstract

PURPOSE:To change the number of columns of a secret code number from a low column to high column, after an input code number of column which is larger than a predetermined level is once registered, by hindering the registration of an input code number, the column of which does not reach the predetermined level, through a column number control circuit. CONSTITUTION:It is judged whether plural switches 11 are operated or not, in an operational control circuit 10. It is judged whether the input code number input from plural switches 11 is identical with the secret code number stored in a memory circuit, in a comparison circuit. When the code number is found identical, an identical signal (unlocking signal) is generated from the comparison circuit, and the operational signal such as of unlocking or locking, are given to an actuator 26. When the operational control circuit is in a writing mode, the column number of the input code number is detected, and when the input code number has more column than predetermined, the storing of a new input code number is permitted, while, when the input code number has the number less than the predetermined, the storing of a new input code number in a storing circuit is hindered. The operation of a lock system is facilitated thereby, and the preventive effect of crimes is further achieved at the time of finishing the construction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an operation control device, and particularly to an operation control device that can change the number of digits of a password code number during and after construction of a building.

BACKGROUND OF THE INVENTION Currently, various locking devices are used in a wide range of technical fields. The most popular type of mechanical cylinder lock device is installed on an opening/closing part such as a door, and the lock device can be locked or unlocked using a key.

Further, as shown in Japanese Patent Publication No. 61-28791, a keyless entry device has been proposed which unlocks the door by pressing a plurality of switches in a predetermined order.

On the other hand, mechanical construction keys are used for buildings at construction sites. By changing the key coat of the lock device used during the construction period after construction, this construction key can be changed to a different coat from the key code used during the construction period, and then used during the construction period. This is a key that prohibits the use of the specified key.

By changing the code of the key used during and after the construction period, it is possible to manage the number of people leaving during and after the construction period, thereby effectively preventing theft.

Problems to be Solved by Akira Akira However, in keyless entry devices, no electronic key device equivalent to such a construction key has been proposed. Conventionally, a keyless entry device has been proposed that allows you to register a different pin code number by inputting the same input code number as the fixed code number, but notifying others of the fixed code number itself is not the original purpose of the lock device. Such a device cannot be used as an electronic construction key, as it defeats the purpose of

When using the keyless entry device as a construction key, registering a code number with a small number of digits will make it easier to operate the keys during function tests or when frequently used during construction when used as a construction key. It is convenient. On the other hand, in houses where people are living, if the number of row 11 numbers is small, there is a security problem.

Therefore, the present invention relates to an operation control device that can change the number of digits of a password code number from a low digit to a high digit.

Means for Solving the Problems An operation control device according to the present invention includes a plurality of input switches, an operation control circuit having an input terminal connected to the plurality of input switches, and a driven circuit connected to an output terminal of the operation control circuit. The apparatus includes a device and a mode switching means for switching the operation control circuit to either read mode or write mode.

The operation control circuit includes a memory circuit that stores the password code number when the operation control circuit is in the write mode, and a memory circuit that stores the input code number generated by operating the input switch and the password stored in the memory circuit when the operation control circuit is in the read mode. A comparator circuit that compares the code numbers and provides an activation signal to the driven device when they match, and an operation control circuit that detects the number of digits of the input code number when it is in the light mode and that the input code number is similar to a predetermined number. A digit number control circuit that allows storage of a new input code number when the input code number has two digits, and prevents the storage circuit from storing a new input code number when the input code number has less than a predetermined number of digits. It is equipped with Further, this operation control device is provided with a canceling means for switching the digit number control circuit to an initial state in which an input code number having a number of digits less than a predetermined number can be stored. The memory circuit includes a first memory that receives and stores an input code number from the input switch, and a memory that stores information in the first memory when the operation control circuit is switched from the light mode to the light mode by the mode switching means. and a second memory for storing input code numbers.

Input code numbers with a small number of digits can be used at the beginning of construction work, etc., and input code numbers with more than a predetermined number of digits can be registered after the initial period of use has elapsed, such as after the completion of construction work. Unable to register number.

That is, when the operation control circuit is in the read mode and a plurality of switches are operated in a predetermined order, a code signal is generated. This code code signal is compared in the comparison circuit with the code code stored in the storage circuit, and if they match, the comparison circuit generates an output. When all digits of the sign code signal match, the comparator circuit can generate a match signal to activate the driven device.

Further, when the operation control circuit is switched from the read mode to the write mode by the mode switching means, a new password code number can be input into the storage circuit by the input switch. In this case, if an input code number with more digits than the predetermined number is registered, the digit number control circuit blocks subsequent registration of input code numbers with fewer digits than the predetermined number.

This allows input code numbers with a small number of digits to be registered at the initial stage of use of the operation control device, and after the initial period of use has elapsed, input code numbers with a large number of digits can be registered, and input code numbers with a small number of digits can be registered. Registration of numbers can be prohibited.

An embodiment of the present invention applied to an electronic lock device will be described below with reference to FIGS. 1 to 4.

As shown in FIG. 1, the operation control device 1 according to the invention has a locking device 3 attached to a frame 7. As shown in FIG. The handle 2 is connected to the locking device 3 by a mechanical device (not shown). The locking device 3 is provided with a latch bolt 5 operated by a handle 2 and a deadbolt 4 locked and unlocked by a cylinder lock 6, similar to conventional locking devices. The upper frame 7 of the cylinder lock 6 is provided with a plurality of input switches 11 constituted by a keyboard, a mode changeover switch 30 as a moto changeover means, and a cancel switch 40 as a cancel means.

These switches are connected to the operation control circuit 1 as shown in FIG.
Connected to 0. In the illustrated example, an input switch 11, a mode changeover switch 30, and a cancel switch 40 are connected to different input terminals of an operation control circuit 10 configured by an IC such as a one-chip microcomputer. Further, an actuator 26 such as a solenoid or a motor as a driven device for operating the deadbolt 4 of the lock device 3 and a display unit 14 such as a buzzer or lamp are connected to different output terminals of the operation control circuit 10. .

The operation control circuit 10 constituted by an IC such as a one-chip microcomputer is programmed and operated according to the operation sequence shown in FIG. Although not shown, the operation control circuit 10 includes a memory circuit that stores the password code number when the operation control circuit is in the write mode, and a memory circuit that stores the input code number generated by operating the input switch 11 when the operation control circuit is in the read mode. A comparator circuit that compares the PIN code number stored in the circuit and gives an activation signal to the driven device when they match, and an operation control circuit that detects the number of digits of the input code number when it is in the light mode. When the input code number has more than a predetermined number of digits, storage of the new input code number is allowed, and when the input code number has less than the predetermined number of digits, the memory circuit is prevented from storing the new input code number. It is equipped with a digit number control circuit. In addition, a signal from the cancel switch 40 switches the digit number control circuit to an initial state in which input code numbers with less than a predetermined number of digits can be stored.

In FIG. 3, first, from the start of step 50, the operation control circuit 10 proceeds to step 51, and determines whether or not a plurality of switches 11 have been operated.

If there is input from the keyboard, the process proceeds to step 52;
The comparison circuit determines whether the input code numbers input from the plurality of switches 11 match the password code numbers stored in the storage circuit. When these code numbers match, a matching signal (unlocking signal) is generated from the comparison circuit in step 53, and an operation signal such as unlocking or locking is given to the actuator 26. If the input code number does not match the PIN code number in step 52, step 5
It is returned to 1.

When there is no signal from the input switch 11 in step 51, the process proceeds to step 54, and the mode changeover switch 30
Determine whether or not is on. If the mode changeover switch 30 is on, the process proceeds to step 55, where it is determined whether or not there is a switch input from the input switch 11. When there is a switch input, the digit number control circuit determines in step 56 whether the input has a predetermined number of digits, for example four or more digits. Here, if the input signal is less than 4 digits, the process proceeds to step 57, where it is determined whether the second password mode is selected. In this specification, a state in which an input code number with a number of digits less than 4 is registered as a number in the PIN code 1 in the memory circuit is defined as the first password mode, and an input code number with a number of 4 or more digits is defined as the first password mode. A state in which the password is registered as a password code number in the memory circuit is defined as a second password mode. This number of digits can be set as an arbitrary value in the operation control circuit 10 by program control. In step 57, if the input code number of 4 or more digits is registered as a PIN code number in the memory circuit, that is, if it is not the second PIN code, in step 58, the input code number is updated in the first PIN mode. It is stored in the memory circuit as a password code number. Thereafter, in step 52, the input code number entered by the input switch 11 is compared with this new pin code number of less than four digits.

In step 56, if the input code number is a number of four digits or more, the process proceeds to step 59 and stores the input code number as a new password code number in the storage circuit in the second password mode. Therefore, in the same manner as described above, thereafter, in step 52, the input code number input by the input switch 11 is compared with this new PIN code number of four or more digits. Also, once a new PIN code number of 4 or more digits is stored in the memory circuit and switched to the second PIN code mode,
When it is determined in step 57 whether or not the second password mode is selected, the result is "affirmative" and step 58 is not passed. Therefore, it is not possible to store input code numbers with fewer than four digits in the storage circuit.

If the mode selector switch 30 is not in the on state in step 54, the process proceeds to step 60, where it is determined whether the cancel switch 40 is in the on state. When the cancel switch 40 is turned on, the second password mode is invalidated in step 61 and the initial first password mode can be restored. Therefore, from then on, input code numbers less than four digits can be registered in the storage circuit as password code numbers.

The above embodiments of the invention can be modified. For example, the operation control circuit 10 made up of the above-mentioned IC can be made up of a discrete circuit.

FIG. 4 shows a keyless entry device in which the operation control circuit 10 is composed of a discrete circuit.

This keyless engine starting device has a plurality of input switches 11 on which numbers O to 9 are displayed. Comparison circuit 2
5 and 13 to or game 1. The first comparison circuit 25 constitutes a first main control device. The output of the OR gate 13 is supplied to the display section 14, the retrigger one-shot 1-multivibrator 19, and the address counter 23 via the one-shot multivibrator 18. The retrigger one-shot multivibrator 19 is connected to the light emitting element 15 and the one-shot multivibrator 20 .

The display section 14 is energized by the output of the OR gate 13 generated each time the input switch 11 is depressed, and generates an auditory signal. The light emitting element 15 is turned on by the output of the retrigger one shot multivibrator 9 to indicate the operation of the retrigger one shot multivibrator 19. Retrigari 1 - When the retrig one-shot multivibrator 19 receives a signal from the one-shot multivibrator 18, it generates an output with a pulse width of about 5 seconds, and when it receives the next input within 5 seconds, it outputs an output at that point. Start counting the pulse width again. The one-shot multivibrator 20 generates an output at the falling edge of the pulse when the output of the one-shot multivibrator 19 stops, and provides a clear signal to the address counter 23 through OR gates 21 and 22.

The address counter 23 counts the number of outputs from the one-shot multivibrator 18 and generates an address signal for each digit. The address signal of the address counter 23 is applied to a first memory 24 , a second memory 25 , a comparison circuit 27 and a digit detector 28 . First memory 24 and comparison circuit 27
Each input terminal of the first input terminal is connected to the BCD conversion circuit 12.
The output terminal of the memory 24 is connected to the input terminal of the second memory 25, and the output terminal of the second memory 25 is connected to the comparison circuit 2.
7 input terminal. The one-shot multivibrator 18 is connected to one input terminal of the AND gate 17 via the delay circuit 16, and the output terminal of the AND gate 17 is connected to the address counter 2 via the OR gates 21 and 22.
Connected to the clear terminal of 3. Comparison circuit 27 compares the password code number stored in second memory 25 with the code number inputted from input switch 11, and provides an output to counter 37 every time there is a -digit match. In this case, the counter 37 can also be configured as part of the comparison circuit 27. When the password code number and the code number input from the input switch 11 match in all digits, the counter 37 generates an output to the actuator 26. If even some of the code numbers do not match, the AND gate 17 generates an output and the address counter 23 and counter 37 are cleared.

Also, when the counter 37 generates an output, the address counter 23 and the counter 37 are cleared.

The mode changeover switch 30 is the R/W of the first memory 24.
(read/write) terminal, the E/D (enable/disable) terminal of the digit detector 28 and the one-shot multivibrator 29. When the mode selector switch 30 is off, the R/W terminal of the first memory 24 and the E/D terminal of the digit detector 28 are held at high level, and at this time, the first memory 24 is read (read). ) mode, and the digit detection circuit 28 is in a disabled mode. Conversely, when the mode selector switch 30 is on, the R/W terminal of the first memory 24 and the E/D terminal of the digit detector 28 are held at a low level;
4 is a write mode, and the digit detection circuit 28 is in an enable mode. Further, the one-shot multivibrator 29 generates a pulse when the mode changeover switch 30 is switched from on to off.

When the address counter 23 generates an output when the mode changeover switch 30 is on, the digit detector 28 determines whether the output of the address counter 23 has reached four digits. When the output of the address counter 23 reaches 4 digits, the digit detector 28
generates an output to RS flip-flop 35 and AND gate 33.

Therefore, the RS flip-flop 35, which is initially in the reset state, is switched to the set state, and an output is generated from the Q terminal of the RS flip-flop 35.

The digit detector 28 and the RS flip-flop 35 constitute a digit number control circuit 36. When the RS flip-flop 35 is in the reset state, it is in the first password mode, and when it is in the set state, it is in the second password mode. After turning on the mode selector switch 30, if an input code number less than 4 digits is input using the input switch 11, the digit detector 28
does not generate an output, so the RS flip-flop 35 is maintained in a reset state. However, when an input code number of four digits or more is input using the input switch 11 after turning on the mode changeover switch 30, the digit detector 28 generates an output and the RS flip-flop 35 is switched to the set state. Therefore, when the mode selector switch 30 is switched from on to off, the one-shot multivibrator 29 generates an output, the AND gate 33 generates an output, and the clock signal is sent to the second memory 25 through the OR gate 34. Give. Therefore, the second storage device 25 stores the input code number temporarily stored in the first storage device 24 as a password code number.

When the cancel switch 40 is turned on, the RS flip-flop 35 is switched to an initial reset state by the output of the one-shot multivibrator 31.

In the above configuration, when the input switch 11 is operated in a predetermined order and an input signal is applied to the comparison circuit 27, the comparison circuit 27 compares the input signal with the PIN code number stored in the second storage device 25. However, only when they match, a match signal is sent to the counter 37, and when the input signal matches all the digits of the password code number, the counter 37 gives a drive signal =17- to the actuator 26. When changing the password code stored in the second memory 25, the mode changeover switch 30 is turned on. In this state, when an input code number less than four digits is input using the input switch 11, this signal is stored in the first memory 24.

Further, since the RS flip-flop 35 is held in a reset state, an output is generated from the terminal of the RS flip-flop 35. Therefore, the AND gate 3
2 generates an output. For this reason, the clock signal is applied to the second storage device 25 via the OR gate 34.
The second storage device 25 stores an input code number of less than four digits as a password code number in the first password mode.

When an input code number of four digits or more is input using the input switch 11, this signal is also stored in the first memory 24.

Further, since the RS flip-flop 35 is switched to the set state by the output of the digit detector 28, an output is generated from the terminal of the RS flip-flop 35. Therefore, the AND gate 33 generates an output based on the output of the one-shot multivibrator 29 generated when the mode changeover switch 30 is switched from on to off. Therefore, since the clock signal is applied to the second memory 25 via the OR gate 34, the second memory 25 stores the input code number of four or more digits as the password code number in the second password mode.

As mentioned above, the present invention provides an operation control device that can change the number of digits of a PIN code number from a low digit to a high digit, which facilitates the operation of a lock device at a construction site etc. After the construction is completed, the crime prevention effect can be further improved.

[Brief explanation of drawings]

FIG. 1 is a front view of the operation control device according to the present invention, FIG. 2 is a diagram of this electric circuit, FIG. 3 is a flowchart showing the operation sequence of the electric circuit of FIG. 2, and FIG. 4 is another implementation of the electric circuit. FIG. 2 is a circuit diagram showing an example. 11. Operation control device, 30. Lock device (driven device)
, 10. , operation control circuit, 110. Input switch, 30
0. Mode changeover switch (mode changeover means), 24-,
, first memory, 250. second memory, 271. Comparison circuit, 36°0 digit number control circuit, 4o1. Cancel switch (cancellation means),

Claims (3)

[Claims] (1) An operation control circuit that has multiple input switches, input terminals connected to the multiple input switches, a driven device connected to the output terminal of the operation control circuit, and the operation control circuit in read mode or write mode. a memory circuit for storing the PIN code number when the operation control circuit is in the write mode; and a memory circuit for storing the input code number generated by operating the input switch when the operation control circuit is in the read mode. A comparator circuit that compares the PIN code number stored in the memory circuit and provides an activation signal to the driven device when they match, and an operation control circuit that detects the number of digits of the input code number when it is in the light mode. allows storage of a new input code number when the input code number has a predetermined number or more digits;
An operation control device characterized in that the operation control circuit is provided with a digit number control circuit that prevents the storage circuit from storing a new input code number when the input code number has less than a predetermined number of digits. (2) The operation control device according to claim 1, further comprising a canceling means for switching the digit number control circuit to an initial state in which an input code number having a number of digits less than a predetermined number can be stored. (3) The storage circuit includes a first storage device that receives and stores the input code number from the input switch, and a first storage device that receives and stores the input code number from the input switch, and a first storage device that receives and stores the input code number from the input switch when the operation control circuit is switched from the write mode to the read mode. The operation control device according to claim 1, further comprising a second storage device for storing input code numbers stored in the input code number.