JP2868534B2 - Operation control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device, and more particularly to an operation control device capable of controlling an object by operating a plurality of switches in a predetermined order.

2. Description of the Related Art In recent years, a system using a magnetic card or a punch card has been proposed for locking and unlocking a door lock control device, in addition to using a metal key. Further, a keyless entry system has been proposed in which an electronic lock is unlocked by inputting the same code number as a code number registered in advance by a plurality of switches without using a key or card to be carried.

For example, as shown in JP-B-58-14910,
Systems for unlocking doors using cards are well known. Also, JP-A-56-105076 and JP-B-59-3263.
As shown in Japanese Patent Publication No. 2 (1993), an electronic lock that generates an unlock signal by operating a plurality of switches in a predetermined order is known.

Problems to be Solved by the Invention By the way, when the user is absent for a long time from a house provided with a lock device or when an unused object is held in an unused state or an unusable state, a conventional keyless entry system is used. There is a danger that another person will repeatedly operate the switches to unlock it incorrectly. Therefore, it is not publicly known,
A keyless entry system capable of switching to a self-lock state has been proposed. "Self-lock state"
Means a state in which the lock device is not unlocked even if a normal unlock code number is input by a plurality of switches. When the keyless entry system is switched to the self-locking state, the effect of preventing unauthorized entry or theft can be further improved. However, if the release code number for releasing the self-locking state is actually known to another person, it is impossible to avoid unauthorized intrusion or theft. Therefore, it is desirable to appropriately change the self-locking code, but a keyless entry system that can appropriately change the self-locking code has not yet been proposed.

Therefore, an object of the present invention is to provide an operation control device that can appropriately change a self-locking code.

Means for Solving the Problems The operation control device according to the present invention includes a plurality of switches (1
1), an operation code code storage means (45) for storing an operation code code, and an operation code code input from a plurality of switches (11) stored in the operation code code storage means (45). And an operation code code comparing means (40) for generating an operation signal to the controlled device (13) when they match. The operation control device includes an invalid code code storage means (51) for storing a self-lock code code and switching between a read mode in which the self-lock code code can be read and a write mode in which the self-lock code code can be written; The invalid code comparing means (50) which compares the code with the self-locking code stored in the invalid code storing means (51) and generates a coincidence signal when they match, and the invalid code comparing means (50) State switching means (60) for generating a self-lock signal for invalidating an operation signal to the controlled device (13) based on the coincidence signal of (50), and fixed code code storage means (75) for storing a fixed code code And the input codes generated from the plurality of switches (11) are compared with the fixed code codes stored in the fixed code storage means (75). And a fixed code code comparing means for generating the trigger pulse (76). Invalid code storage means (51)
Are switched to the write mode by the trigger pulse of the fixed code code comparing means (76).
The operation code input from 1) is stored as a new self-lock code.

In the embodiment of the present invention, the fixed code code comparing means (7
When the trigger pulse of 6) is generated, the invalid code storage means (51) is switched to the write mode for a fixed time by the timer (78).

In the present specification, the “code” is not limited to a number,
A code composed of one or more identification symbols including alphabets.

When a plurality of switches (11) are operated in a predetermined order to input the same code as the operation code stored in the operation code storage (45), the operation code comparison means (40) operates. A signal can be generated to operate the controlled device (13). When the object provided with the controlled device (13) is held in the non-use state or the unusable state for a long time, the user operates the plurality of switches (11) to set the same code code as the self-lock code code. Is input, the invalid code comparison means (50) generates a self-lock signal, and the operation control device is switched to the self-lock state. In the self-lock state, even if a plurality of switches (11) are operated, the operation signal to the controlled device (13) is invalidated,
Since the controlled device (13) cannot be operated, there is no danger of unauthorized operation by others.

In the embodiment of the present invention, when the user again inputs the same code code as the self-locking code code in the self-locking state, a self-locking signal is generated from the invalid code code comparing means (50), and the operation control device is turned off. The state is switched to the release state. When the same code as the operation code stored in the operation code storage means (45) is input by operating the plurality of switches (11) in a predetermined order in the self-lock release state, as described above. , The operation code comparison means (40) generates an operation signal and outputs the operation signal to the controlled device (1
3) is operated.

An input code generated when a plurality of switches (11) are operated is compared with a fixed code stored in a fixed code storage (75) in a fixed code comparison means (76). When the input code matches the fixed code, the fixed code comparison means (76) generates a trigger pulse, and the timer (78) switches the invalid code storage means (51) to the write mode for a fixed time by the trigger pulse. Occurs. The invalid code code storage means (51) switched to the write mode stores a plurality of switches (1
The code code input from 1) is stored as a new self-locking code code, and the stored self-locking code code is erased. Thereafter, the newly stored self-locking code code is reset to the self-locking state. Used for setting and canceling.

Embodiment An embodiment of an operation control device according to the present invention will be described below with reference to FIGS.

First, as shown in FIG. 2, a keyboard having a plurality of switches 11 displaying numbers 0 to 9 and a start switch ST is attached to the door. The keyboard is number one
As shown in the figure, it is electrically connected to an operation control circuit 10 composed of, for example, a one-chip microcomputer.

The operation control circuit 10 has an input port to which a plurality of switches 11 are connected, and an output port connected to a controlled device 13 having an actuator such as a solenoid or a motor for operating a lock device and a display 16. Display 16
Is constituted by a buzzer 14 and a lamp 15 connected to the output port of the operation control circuit 10. The buzzer 14 generates a sound for confirming the pressed state when any of the switches 11 is pressed. Further, the lamp 15 may be a light emitting diode that is energized when an unlock signal as an operation signal is generated.

Although not shown in FIG. 1, the operation control circuit 10 stores a timer means, an operation code storage means for storing an operation code, and code codes inputted from the plurality of switches 11 in the operation code storage means. An operation code comparison means for comparing the set operation code with an operated code and generating an unlocking signal as an operation signal in the controlled device 13 when they coincide with each other, and a read mode in which a self-lock code can be stored and read. Invalid code code storage means switched to a writable and writable write mode, fixed code code storage means for storing a fixed code code, and fixed codes stored in the fixed code code storage means for input codes generated from the plurality of switches 11. A fixed code code comparing means for generating a trigger pulse when they match with the code code;

Further, the operation control circuit 10 includes an invalid code code storage unit that stores a self-lock code code, and a plurality of switches 11
The invalid code code comparing means which compares the code code input from the self-locking code code stored in the invalid code code storing means and generates a coincidence signal when these coincide with each other. There is provided state switching means for switching between a self-lock state in which the unlock signal to the controlled device 13 is invalidated based on the signal and a release state in which the unlock signal is not invalidated.

When the same code code as the self-lock code code is input from the plurality of switches 11 in the release state, the state switching means switches from the release state to the self-lock state.
In the self-locking state, even if a plurality of switches 11 are operated, the operation signal to the controlled device 13 is invalidated and the controlled device 13
Cannot be operated, there is no danger of unauthorized operation by others. Further, when the same code code as the self-lock code code is input from the plurality of switches 11 in the self-lock state, the state is switched from the self-lock state to the release state. When the code is input, an unlock signal is output from the operation code comparison means to the controlled device 13.
As described above, the state switching means is alternately switched between the self-locked state and the released state by the repeated output of the invalid code comparison means.

The operation of the above configuration will be described with reference to the operation sequence of FIG. From the start of step 20, the process proceeds to step 21, where it is determined whether or not a code code has been input by pressing a plurality of switches 11. When the code code is not input, the process returns to the start, and when the code code is input, the process proceeds to step 22, where the input code code is used as the unlock code stored in the operation code code storage unit by the operation code code comparison unit. This is compared with the operation code. If the input code code does not match the unlock code card, the invalid code code comparison means compares the self-lock code code with the input code in step 23. If the self-locking code code and the input code match in step 23, the state switching means determines in step 24 whether or not the self-locking state is established. If it is in the self-lock state, in step 25, after releasing the self-lock state, the process proceeds to start. If the self-lock state is not set in step 24, the self-lock state is set in step 33, and then the process returns to the start.

If it matches the unlock code in step 22, the state switching means determines in step 31 whether or not it is in a self-locked state. If the self-locking state is not established, an unlock signal is generated in step 32, the controlled device 13 is operated to unlock the locking device, and the process returns to step 20.

If the input code does not match the self-locking code in step 23, the process proceeds to step 26, where the fixed code comparing means compares the input code with the fixed code stored in the fixed code storage. If they do not match, the process returns to step 20, and if the input code matches the fixed code stored in the fixed code storage means, a timer of, for example, 10 seconds is set in step 27. Subsequently, in step 28, it is determined whether a predetermined time set by the timer has elapsed. After a certain period of time, the process returns to Start 20. If the fixed time has not elapsed, the process proceeds to step 29, where it is determined whether or not a key code has been input by the switch 11, and when the key code has been input, in step 30, the invalid code storage means stores the input code in a new self-lock It is stored as a code. At the same time, the invalid code storage means deletes the self-lock code stored before. Therefore, thereafter, the newly stored self-locking code is used for setting and releasing the self-locking state. If no key code is input in step 29, the process returns to step.

Embodiments of the present invention can be modified. For example, the first
FIG. 3 and FIG. 3 show an example in which an operation control device according to the present invention is configured using an IC such as a microcomputer. However, as shown in FIG. 4, the operation control device according to the present invention can also be implemented by a discrete circuit. Can be configured. The embodiment of FIG. 4 will be described below.

The plurality of switches 11 are connected to an unlock code comparator (operation code code comparing means) 4 via a chattering prevention circuit 35.
0, a self-locking code comparator (invalid code comparing means) 50, a fixed code comparator 76 (fixed code comparing means) and an OR gate 41. The output of the OR gate 41 is supplied to the buzzer 14, the retrigger one-shot multivibrator 42 and the address counter 43. Buzzer 14
Is activated by the output of the OR gate 41 generated each time the switch 11 is pressed, and generates an auditory signal. When receiving a signal from the OR gate 41, the retrigger one-shot multivibrator 42 generates an output having a pulse width of about 5 seconds,
When the next input is received within the second, the pulse width counting is started again from that point. When the output of the retrigger one-shot multivibrator 42 stops, the one-shot multivibrator 44 generates an output at the falling edge of the pulse and gives a reset signal to the address counter 43 through the OR gate 47. The address counter 43 counts the number of outputs of the OR gate 41 and generates an address signal of each digit. The address signal of the address counter 43 is stored in an unlock code storage 45 (operation code storage), a self-lock code storage (invalid code storage) 51, a fixed code storage 75 (fixed code storage), and a digit. It is provided to the number detector 46.

The digit number detector 46 outputs an OR gate 47 when the output of the address counter 43 reaches a predetermined digit (for example, 3, 5 or 7 digits).
To the address counter 43 through the reset signal. The unlock code memory 45 receives the address signal output from the address counter 43 and outputs the stored operation code to the unlock code comparator 40. Similarly, the self-lock code memory 51 stores the address counter 43
And outputs the stored self-locking code code to the self-locking code comparator 50.

The fixed code storage 75 sends the stored fixed code to the fixed code comparator 76 when the address signal of the address counter 43 is received. The fixed code comparator 76 compares the fixed code stored in the fixed code storage 75 with the code input from the plurality of switches 11, and outputs an output to the counter 77 each time they match. The counter 77 outputs a predetermined number of digits to the fixed code code comparator 76.
Trigger pulse is generated when timer 78
Activate Timer 78 is a self-locking code memory 51
Connected to the W / R terminal. The fixed code comparator 76 compares the input code supplied from the switch 11 with the fixed code read from the fixed code storage 75,
When they match, an output is given to the timer 78. For this reason, the timer 78 generates an output for a certain period of time, for example, 10 seconds, and switches the self-lock code storage unit 51 from the read mode to the writable write mode. When the timer 78 is not producing an output, the self-locking code storage 51 is switched to a readable read mode.

The output of the unlock code comparator 40 is sent to the counter 49, and the output of the counter 49 is sent to the controlled device 13 and the display 48. The output of the self-lock code comparator 50 is sent to the counter 52. The output of the counter 52 is connected to the one-shot multivibrator 53. The output terminal of the one-shot multivibrator 53 is connected to a state switching circuit (state switching means) 60.

The state switching circuit 60 has an R / S flip-flop 61 for switching the operation control device between a self-locked state and a released state. The output of the one-shot multivibrator 53 is supplied to a flip-flop 61 via an AND gate 62 and an OR gate 63.
Is connected to the set terminal. The output of the one-shot multivibrator 53 is connected to the reset terminal of the flip-flop 61 via the AND gate 64. The Q output terminal of the flip-flop 61 is connected to the bases of the transistors 71 and 72 and the inverting input terminal of the AND gate 62, and applies a self-lock signal. The collector of the transistor 71 is connected to the output terminal of the counter 49, and the emitter is grounded.

The collector of the transistor 72 is connected to the input terminal of the buzzer 14, and the emitter is grounded. The Q bar output terminal of the flip-flop 61 is connected to the inverting input terminal of the AND gate 64 and the input terminals of the timer 65 and the AND gate 66. The output of the timer 65 is connected to the inverting input terminal of the AND gate 66 and one input terminal of the AND gate 67. Timer 65
When the Q-bar output terminal of the flip-flop 61 changes from the low voltage level to the high voltage level and generates a self-lock signal, it generates an output having a pulse width for a predetermined time. An unlock signal is supplied to the other input terminal of the AND gate 67 as the output of the counter 49, and the output of the AND gate 67 is R / S
It is provided to the set terminal of the flip-flop 68. The Q output terminal of the flip-flop 68 is connected to the inverting input terminal of the AND gate 66, and the output of the OR gate 47 is supplied to the reset terminal. The output terminal of AND gate 66 is OR gate
The output of the OR gate 47 is connected to each counter 49 and
52 and the respective reset terminals of the flip-flop 68.

In the above configuration, when the operator operates the plurality of switches 11 in a predetermined order, the input code code is given to the unlock code comparator 40 and the self-lock code comparator 50. At the same time, the outputs of the plurality of switches 11 are supplied to the address counter 43 via the OR gate 41,
The address counter 43 supplies an address signal to the unlock code storage 45 and the self-lock code storage 51.
Therefore, the operation code stored in the unlock code storage 45 is sent to the unlock code comparator 40.
Further, the self-locking code code stored in the self-locking code storage unit 51 is provided to the self-locking code comparator 50.

When each digit of the input code code matches the stored operation code, the unlock code comparator 40 outputs an output to the counter 49 for each digit. If all digits match, the counter 49 generates an output on the controlled device 13 and the display 48.
Therefore, the controlled device 13 is unlocked, and the unlocked state is displayed on the display 48. Self-lock code comparator 50
When each digit of the input code matches the stored self-locking code, the output is counted for each digit.
Occurs at 52. When all digits match, the counter 52 generates an output. The output of the counter 52 is shaped by the one-shot multivibrator 53 and then sent to the state switching circuit 60.

In the normal use state, the state switching circuit 60 is shifted to the release state, the Q output terminal of the flip-flop 61 is at the low voltage level, and the Q bar output terminal is in the reset state at the high voltage level. The inverting input terminal of the AND gate 62 is provided with a low voltage level signal, and the inverting input terminal of the AND gate 64 is provided with a high voltage level signal. Therefore, when an output is generated from the one-shot multivibrator 53, an output is generated from the AND gate 62, and this output is applied to the set terminal of the flip-flop 61 through the OR gate 63. Therefore, the flip-flop 61 is switched to the set state, the Q output terminal is switched to the high voltage level, and the Q bar output terminal is switched to the low voltage level. When the flip-flop 61 is in the set state, the operation control device enters the self-lock state. Therefore, the transistors 71 and 72 are turned on, the output of the counter 49 is not given to the controlled device 13 and the display 48, and the output of the OR gate 41 is
Is not granted to In the self-locked state, even if the switch 11 is operated, no operating sound is generated by the buzzer 14, and even if a code code identical to the operation code code is input from the switch 11, the controlled device 13 is not operated.

Next, when the operator inputs the same code code as the self-lock code code from the switch 11, an output is generated from the counter 52 in the same manner as described above. Accordingly, a pulse is applied from the one-shot multivibrator 53 to the AND gates 62 and 64. Therefore, an output is generated from the AND gate 64, and the flip-flop 61 is switched to the reset state. For this reason, an output is generated from the Q bar output terminal of the flip-flop 61, and an output is generated from the timer 65 for a fixed time of, for example, three minutes. The operator must input the same code as the operation code from the switch 11 during this fixed time. That is, when the same code as the operation code is input by the switch 11 during the time when the timer 65 is generating the output, the counter 49 generates an unlock signal as an output. Therefore, the AND gate 67 generates an output, the flip-flop 68 is set, and an output is generated from the Q output terminal.

When a predetermined time elapses in this state and the timer 65 times out, the output of the timer 65 goes to a low voltage level, so that the AND gate 66 does not generate an output. But the timer
If the unlock signal is not generated from the counter 49 during the time set in the timer 65, the flip-flop 68 is not set.
Generates an output, sets the flip-flop 61 through the OR gate 63, and switches to the self-lock state. As described above, the state switching circuit 60 is alternately switched between the self-locked state and the released state each time an output is generated from the counter 52.

When changing the self-locking code code, the same input code as the fixed code stored in the fixed code storage 75 is input from the plurality of switches 11. The fixed code code comparator 76 has an input code and a fixed code code storage 75.
And outputs the result to the counter 77 when they match. counter
77 gives an output to the timer 78 when all digits match. Therefore, the switch 11 is pressed in a predetermined order while the timer 78 is outputting for 10 seconds. The code code generated at this time is stored in each address of the self-lock code storage 51. Therefore, after the output of the timer 78 is stopped after a lapse of 10 seconds, the self-lock code comparator 50 compares the code code newly stored in the self-lock code storage unit 51.

The above embodiment of the present invention can be variously modified. In the above embodiment, the case where the operator is away from the house for a long time has been described. However, the present invention can be applied to other cases. For example, the operation control device of the present invention can be installed in a guest locker or a rental apartment at a golf course. In this case, the administrator can switch an unused locker or condominium or a locker after a predetermined time has elapsed to the self-locking state. Further, similarly to the self-lock code storage 51, the unlock code storage 45 storing the operation code can be configured to be switched to a write mode in which a desired code can be stored.

Further, in the above-described embodiment, an example in which the operation control device according to the present invention is applied to the operation of the lock device has been described.

According to the present invention, the self-locking code can be changed as appropriate, so that unauthorized unlocking, theft, and intrusion of the operation control device can be prevented. Also, the self-lock code is changed by inputting the fixed code,
It is possible to prevent unauthorized change of the self-lock code.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an electric circuit of an operation control device according to the present invention, FIG. 2 is a front view of the operation control device according to the present invention, and FIG. 3 is an electric circuit of FIG. FIG. 4 is a circuit diagram showing an electronic circuit of the operation control device according to the present invention. 11 switch, 13 controlled device, 40 unlock code comparator (operation code code comparison means), 45 unlock code storage (operation code code storage means), 50
... Self-locking code comparator (invalid code comparing means), 51 ... Self-locking code memory (invalid code storing means), 60 ... state switching circuit (state switching means),
75 fixed code code storage (fixed code code storage means), 76 fixed code code comparator (fixed code code comparison means), 78 timer

Claims (2)

(57) [Claims] An operation code storage means (45) for storing a plurality of switches (11), operation code codes, and an operation code code storage means (45) for storing operation code codes inputted from the plurality of switches (11). The operation control device includes an operation code code comparing means (40) for comparing the operation code code stored in the operation code code and generating an operation signal to the controlled device (13) when they match with each other. Invalid code storage means (51) for switching between a read mode capable of storing and reading and a write mode capable of writing, and a plurality of switches (1
The operation code code input from 1) is compared with the self-locking code code stored in the invalid code code storage means (51), and an invalid code code comparing means (50) for generating a coincidence signal when they match. And state switching means (60) for generating a self-lock signal for invalidating an operation signal to the controlled device (13) based on a coincidence signal from the invalid code code comparing means (50), and storing a fixed code code. The input codes generated from the fixed code storage means (75) and the plurality of switches (11) are compared with the fixed code codes stored in the fixed code storage means (75), and when they match, a trigger is generated. Fixed code code comparing means (76) for generating a pulse, and the invalid code code storage means (51) is switched to the write mode by a trigger pulse of the fixed code code comparing means (76). Operation control apparatus characterized by storing the operation code code input from a plurality of switches (11) as a new self-locking code code. 2. The operation according to claim 1, wherein when a trigger pulse of the fixed code code comparing means is generated, the invalid code code storage means is switched to the write mode for a fixed time by a timer. Control device.