JP2602095B2 - Operation control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controlled device, particularly to an operation control device that can be operated 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 in addition to using a metal key has been proposed for unlocking a door controlled device. In addition, 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, in the conventional keyless entry system, when a 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. However, there is a danger of unlocking if another person repeatedly and incorrectly operates a plurality of switches. Therefore, although not known, a keyless entry system capable of switching to a self-locking state has been proposed. The "self-lock state" refers to a state in which the lock device is not unlocked even when a normal unlock code number is input by a plurality of switches. By forming such a self-locked 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 that the self-locking code can be appropriately changed, 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 capable of appropriately changing a self-locking code.

Means for Solving the Problems The operation control device according to the present invention includes a plurality of switches (11).
And an operation code storage unit (45) for storing the operation code, and an operation code stored in the operation code storage unit (45). Controlled device when matched, (17)
Operation code comparison means (40) for generating an operation signal to the controller
And invalid code storage means (51) for storing a self-lock code code, and a self-lock code code stored in the invalid code code storage means (51). An invalid code code comparing means (50) for generating a match signal when comparing and matching;
State switching means (60) for generating a self-lock signal for invalidating the operation signal to the controlled device (17) based on the coincidence signal of the invalid code code comparing means (50). In this operation control device, the mode switching means for switching the operation code code storage means (45) and the invalid code code storage means (51) from a read mode capable of selectively reading to a write mode capable of writing is a setting switch (13) And a selection circuit (54) connected to the setting switch (13). The selection circuit (54) can be written from a read mode in which either the operation code code storage means (45) or the invalid code code storage means (51) can be selectively read depending on the length of time the setting switch (13) is operated. Switch to the proper light mode. The operation code code storage means (45) and the invalid code code storage means (51) store the code codes input from the plurality of switches (11) into a new operation code code or a self-operation code when switched to the write mode by the mode switching means. It is stored as a lock code.

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

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, the operation code comparison means (40) Generates an operation signal to control the controlled device (17)
Can be operated. When the user holds the object provided with the controlled device (17) in a non-use state or an unusable state for a long time, the user operates a plurality of switches (11) to be the same as the self-lock code code. Enter the code of Therefore, a self-lock signal is generated from the invalid code comparison means (50), and the operation control device is switched to the self-lock state. In this state, even if the plurality of switches (11) are operated, the operation signal to the controlled device (17) is invalidated, and there is no danger that the controlled device (17) is operated by another person.

In the self-lock state, when the user again inputs the same code code as the self-lock code code, a self-lock signal is generated from the invalid code code comparing means (50), and the operation control device is switched to the release state. In this state, when a plurality of switches (11) are operated in a predetermined order and the same code as the operation code stored in the operation code storage means (45) is input, the operation is performed. The code code comparing means (40) generates an operation signal to operate the controlled device (17).

When the operation code code storage means (45) and the invalid code code storage means (51) are switched to the write mode by the mode switching means, the code codes input from the plurality of switches (11) are replaced with new operation code codes. Alternatively, it is stored as a self-locking code. Therefore, the newly stored operation code or self-lock code is used to operate the controlled device (17) or to set or cancel the self-lock state, and the previously stored operation code or self-lock code is used. The code is erased.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

First, as shown in FIG. 1, the door has a plurality of switches 11, on which numbers 0 to 9 are displayed, a check-in switch C, a check-out switch O, and a start switch ST.
Is attached. keyboard
As shown in FIG. 2, reference numeral 10 is electrically connected to an operation control circuit 12 constituted by, for example, a one-chip microcomputer.

The operation control circuit 12 has an input port to which a plurality of switches 11 and a setting switch 13 as switching means are connected. Further, the operation control circuit 12 includes, for example, a controlled device 17 having an actuator such as a solenoid or a motor that operates a lock device, a buzzer 18 and a base of each of the transistors 14, 15 and 16 having a collector to which the display 19 is connected. It has a connected output port. Transistors 14, 15 and
Each of the 16 emitters is grounded. The buzzer 18 generates a sound for confirming the pressed state when any of the switches 11 is pressed. The display 19 is a light emitting diode that is energized when an unlock signal as an operation signal is generated.

The operation control circuit 12 includes a timer unit, an operation code storage unit that stores an operation code, and a plurality of switches 11.
An operation code code comparing unit that compares the leaf code input from the operation code stored in the operation code code storage unit and generates an unlock signal as an operation signal to the controlled device 17 when they match. The setting switch 13 constitutes mode switching means. Further, the operation control circuit 12 compares the invalid code storage means for storing the self-lock code code with the code input from the plurality of switches 11 and the self-lock code stored in the invalid code storage means. An invalid code comparison means for generating a coincidence signal when they coincide with each other, and a state switching means for outputting a self-lock signal to the controlled device 17 based on the coincidence signal of the invalid code comparison means. . The operation control circuit is a state switching means that switches between a self-lock state in which the unlock signal to the controlled device 17 is invalidated and a release state in which the unlock signal is not invalidated.
12 is provided. The state switching means alternately switches the operation control device between the self-locked state and the released state by the repeated output of the invalid code comparison means. In the self-locking state, after inputting the same code code as the self-locking code code with the plurality of switches 11, inputting the same code code as the operation code code with the plurality of switches 11, the operation code code comparing means sends the controlled device An unlock signal is output to 17.

Hereinafter, the operation of the above configuration will be described with reference to the operation sequence of FIG. From the start of step 20 to step 21
Then, it is determined whether or not a code is input by pressing a plurality of switches 11. If no code is entered, the program returns to the start.
Proceeding to 22, it is determined whether the setting switch 13 has been turned on. If not turned on, the process proceeds to step 23, where the input code code is compared by the operation code code comparison means with the operation code code as the unlock code stored in the operation code code storage means. If the input code does not match the unlock code, the invalid code comparing means compares the self-lock code with the input code in step. If they do not match in step 24, the process returns to the start. If it is in the self-locking state, in step 26, the self-locking state is released, and then the process proceeds to start. If it is not in the self-locking state, the self-locking state is set in step 33, and the process returns to start.

If it matches the unlock code in step 23, 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 17 is operated to unlock the locking device, and the process returns to step 20.

When the setting switch 13 is operated in step 22,
In step 27, for example, a timer of 10 seconds is set.
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. Step 29 if a certain time has not passed
Then, it is determined whether or not a key code has been input by the switch 11. If no key code has been input in step 29, the process returns to step. When the key code is entered,
In step 30, it is determined whether or not the setting switch 13 has been kept on for at least one second. If it is held for one second or longer, the process proceeds to step 31, where the input code is stored in the invalid code storage means as a self-locking code. At the same time, the invalid code storage means deletes the self-lock code stored before. Therefore, the newly stored self-locking code is used for setting and releasing the self-locking state thereafter. When the setting switch 13 is switched from on to off in less than one second in step 30, the process proceeds to step 32, where the input code is stored in the operation code storage means as an operation code. At the same time, the operation code storage means erases the operation code stored before. Therefore, the newly stored operation code is used for the operation of the controlled device thereafter.

Embodiments of the present invention can be modified. For example, the second
FIG. 3 and FIG. 3 show an example in which the operation control device according to the present invention is constructed by using an IC such as a microcomputer. However, as shown in FIG. 4, the operation control device according to the present invention is also provided 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, connected to a self-locking code comparator (invalid code comparing means) 50 and an OR gate 41. Or gate
The output of 41 is supplied to the buzzer 18, the retrigger one-shot multivibrator 42 and the address counter 43. The buzzer 18 is energized by the output of the OR gate 41 generated each time the switch 11 is pressed, and generates an auditory signal. The retrigger one-shot multivibrator 42 generates an output having a pulse width of about 5 seconds when receiving a signal from the OR gate 41, and when receiving the next input within 5 seconds, counting the pulse width again from that time. To start. One-shot multivibrator 44 is a retrigger one-shot multivibrator
When the output of 42 stops, an output is generated at the falling edge of the pulse, and the address counter is output through the OR gate 47.
43 is given a reset signal. 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 applied to an unlock code storage (operation code storage) 45, a self-lock code storage (invalid code storage) 51, and a digit 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 unlock code storage 45 and the self-lock code storage 51 have W / R terminals connected to the setting switch 13 via the selection circuit 54. Setting switch 13 and selection circuit 5
4 constitutes a mode switching means. FIG. 5 shows a detailed electric circuit of the selection circuit 54. One end of the setting switch 13 is connected to the ground, and the other end is connected to the power supply via the resistor 73. The selection circuit 54 includes an inverter 75 connected to a branch point 74 between the setting switch 13 and the other end and the resistor 73, a timer circuit 76 connected to the inverter 75, a timer circuit 77 connected to the branch point 74, A monostable multivibrator 78 that generates a pulse when the output of the timer circuit 77 rises, a branch point 74, an AND gate 79 connected to the timer circuit 79 and the monostable multivibrator 78, and a branch point 74 via an inverting input terminal. And an AND gate 80 connected to the monostable multivibrator 78. The AND gates 78 and 80 are connected to the unlock code storage 45 via timers 81 and 82, respectively.
And a self-locking code storage unit 51. When the setting switch 13 is turned on and the output of the inverter 75 goes high, the timer circuit 76 generates an output with a pulse width slightly longer than 1 second, for example, a pulse width of 1.02 seconds. Also,
Timer circuit 77 produces a one second pulse width output. The monostable multivibrator 78 generates a pulse having a pulse width of 0.02 seconds when the output of the timer circuit 77 rises. Therefore, if the setting switch 13 is turned off within one second after being turned on, the AND gate 79 generates an output, the timer 81 is turned on, for example, an output for 10 seconds is generated, and the unlock code storage 45 is stored. Switch to the writable write mode. When the setting switch 13 is pressed for 1.02 seconds or more, the AND gate 79 does not generate an output, the AND gate 80 generates an output, the timer 82 generates an output for 10 seconds, and the self-lock code storage 51 is Switch to the writable write mode. When the setting switch 13 is turned off or turned on for 10 seconds, the unlock code storage 45 or the self-lock code storage 51 is switched to a readable read mode.

The output of unlock code comparator 40 is sent to counter 49. The output of the counter 49 is the controlled device 17 and the display 19.
Sent to 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 for applying 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 18, and the emitter is grounded. flip flop
The output terminal 61 is connected to the inverting input terminal of the AND gate 64, the input terminal of the AND gate 66, and the timer 65. The output of the timer 65 is connected to the inverting input terminal of the AND gate 66. When the output terminal of the flip-flop 61 changes from a low voltage level to a high voltage level to generate a self-lock signal, the timer 65 generates an output having a pulse width of a certain time. An unlock signal is supplied to the input terminal of the AND gate 67 as the output of the timer 65 and the output of the counter 49, and the output of the AND gate 67 is supplied to the R / S flip-flop 68.
Are assigned to the set terminals. 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 the AND gate 66 is connected to the OR gate 63. The output of the OR gate 47 is supplied to each counter 49 and 52 and each reset terminal 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. When all digits match, the counter 49 generates an output on the controlled device 17 and the display 19.
Therefore, the controlled device 17 is unlocked, and the unlocked state is displayed on the display 19. When each digit of the input code code matches the stored self-lock code code, the self-lock code comparator 50 outputs an output to the counter 52 for each digit. If all digits match, the counter 52 generates an output. After the output of the counter 52 is shaped by the one-shot multivibrator 53, the state switching circuit
Sent to 60.

In the normal use state, the state switching circuit 60 is shifted to the release state. In this state, the flip-flop 61
Is in a reset state. That is, the Q output terminal is at a low voltage level and the output terminal is at a 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, the AND gate 62
, And this output is applied to the set terminal of the flip-flop 61 through the OR gate 63. Therefore, flip-flop 61 is switched to the set state, and Q
The output terminal is switched to a high voltage level and the output terminal is switched to a 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 applied to the controlled device 17 and the display 19, and the output of the OR gate 41 is not applied to the buzzer 18. In the self-locking state, the buzzer
The operation sound is not generated by 18, and the controlled device 17 is not operated even if the same code code as the operation code is input from the switch 11.

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 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 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 the unlock signal as the 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. After a predetermined time has elapsed in this state, the timer 65
When the time is up, the output of the timer 65 goes to a low voltage level, and the AND gate 66 does not produce an output. However, 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, and when the timer 65 stops outputting,
The AND gate 66 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 operation code stored in the unlock code storage 45 or the self-lock code stored in the self-lock code storage 51, the setting switch 13
Is operated. As described above, if the setting switch 13 is turned on and then turned off within one second, the timer 81 is turned on, and the unlock code storage 45 is switched to a writable write mode. When the setting switch 13 is pressed for 1.02 seconds or more, the timer 82 switches the self-lock code storage 51 to a writable write mode. The switch 11 is pressed in a predetermined order while the selection circuit 54 is generating an output for 10 seconds. The code code generated at this time is selectively stored in each address of the unlock code storage 45 or the self-lock code storage 51. Therefore, after 10 seconds have passed since the setting switch 13 was turned off, the unlock code storage 45
Alternatively, the operation code code or the invalid code code newly stored in the self-lock code storage unit 51 is compared by the unlock code comparator 40 or the self-lock code comparator 50.

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.

[Brief description of the drawings]

FIG. 1 is a front view of an operation control device according to the present invention, FIG. 2 is a block diagram showing an electric circuit of the operation control device according to the present invention, and FIG. 3 is a flowchart showing an operation sequence for operating the electric circuit of FIG. FIG. 4 is a circuit diagram showing an electronic circuit of the operation control device of the present invention, and FIG. 5 is a circuit diagram showing details of a selection circuit of the operation control device. 11 switch, 13 setting switch (mode switching means), 17 controlled device, 40 unlock code comparator (operation code comparison means), 45 unlock code storage (operation code) Code storage means) 50 Self-lock code comparator (invalid code code comparison means) 51
Self-lock code storage (invalid code storage), 54 selection circuit, 60 state switching circuit (state switching means),

Claims (1)

(57) [Claims] A plurality of switches, an operation code storage means for storing operation code codes, and a code code inputted from the plurality of switches are stored in an operation code code storage means. And an operation code code comparing means (40) for generating an operation signal to the controlled device (17) when the operation code codes match, and an invalid code code storage means (40) for storing a self-lock code code. 51) and a code code input from the plurality of switches (11) and a self-locking code code stored in the invalid code code storage means (51). And a state switching means (60) for generating a self-lock signal for invalidating the operation signal to the controlled device (17) based on the coincidence signal of the invalid code comparison means (50). In the control unit, the mode switching means for switching the operation code code storage means (45) and disabling code code storage means (51) from selectively readable Read Mode writable write mode,
A setting switch (13), and a selection circuit (54) connected to the setting switch (13), wherein the selection circuit (54) stores an operation code code storage means according to the length of time during which the setting switch (13) is operated. (45) and invalid code code storage means (51) are switched from a selectively readable read mode to a writable write mode, and the operation code code storage means (45) and the invalid code code storage means (51) An operation control device for storing code codes input from a plurality of switches (11) as new operation code codes or self-lock code codes when the mode is switched to the write mode by mode switching means.