JPH032479A - Operation controller - Google Patents

Abstract

PURPOSE:To prevent the occurrence of wrong unlocking by a method in which mode is switched to write mode by the trigger pulse of a fixed code comparator, and operation codes input from switches are stored as new self-lock codes. CONSTITUTION:An operation controller is made up of a keyboard with switches 11 and an operation control circuit 10 having a fixed code comparator by which input codes from the switches 11 are compared with fixed codes in a fixed code memory and when they are matched a trigger pulse is generated. The switches 11 are operated, trigger pulse is generated by the fixed code comparator to switch the mode to write mode, and input codes from the switches 11 are stored as new self-lock codes. The codes hitherto are erased. The occurrence of wrong unlocking can thus be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Hiko 1L Proportional 1''L and I- This invention relates to an operation control device, and particularly to an operation control device that can be operated by operating a plurality of switches in a predetermined order.

In recent years, in addition to using a metal key, a system has been proposed that uses a magnetic card or a punch card to lock and unlock a door lock control device. In addition, by inputting the same code number as the pre-registered code number using multiple switches, without using a key or card that you carry,
Keyless entry systems for unlocking electronic locks have been proposed.

For example, as shown in Japanese Patent Publication No. 58-14910, a system for unlocking a door using a card is known. Further, as shown in Japanese Patent Application Laid-open No. 56-105076 and Japanese Patent Publication No. 59-32632, electronic locks are known that generate an unlocking signal by operating a plurality of switches in a predetermined order.

However, with conventional keyless entry systems, when a user is absent from a house equipped with a locking device for an extended period of time, or when objects that are not in use are left unused or unusable, it is difficult for other people to There is a risk of unauthorized unlocking by repeatedly operating multiple switches. Therefore, although not publicly known, a keyless entry system that can switch to a self-locking state has been proposed. "Self-lock state"
This refers to a state in which the lock device cannot be unlocked even if the correct unlock code number is input using multiple switches. By forming such a self-locking state, the effect of preventing unauthorized entry or the effect of preventing posture can be further improved.

However, in reality, if someone else learns the release code number for releasing the self-lock state, unauthorized intrusion or theft cannot be avoided.Therefore, it is desirable to be able to change the self-lock code code as appropriate, but the self-lock code code No keyless entry system has yet been proposed that allows the user to change the information as needed.

Therefore, it is an object of the present invention to provide an operation control device that can change the self-lock code as appropriate.

The operation control device according to the present invention includes a plurality of switches, an operation code storage means for storing operation code codes, and an operation code storage means for storing operation code codes inputted from the plurality of switches. an operation code comparison means that compares the operation code and generates an operation signal to the controlled device when they match, and switches to a read mode in which the self-locking code can be stored and read and a write mode in which it can be written. The input codes generated from the plurality of switches are compared with the fixed code stored in the fixed code storing means, and the fixed code storing means stores the fixed code. fixed code code comparison means that generates a trigger pulse when and a state switching means that generates a self-lock signal to invalidate the operation signal to the controlled device based on the coincidence signal of the invalid operation code code comparison means.

The invalid operation code storage means stores the operation code input from the plurality of switches as a new self-lock code when the fixed code comparison means switches to the write mode by the trigger pulse. Furthermore, when the trigger pulse of the fixed sign code comparison means occurs,
The invalid operation code storage means is switched to write mode for a certain period of time by a timer.

In this specification, a "code" is not limited to numbers, but refers to 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 is input by operating a plurality of switches in a predetermined order, the operation code code comparison means generates an operation signal, A controlled device can be produced independently. When a user keeps an object equipped with a controlled device in an unused or unusable state for a long time, the user operates multiple switches and inputs the same code as the self-lock code. . Accordingly, a self-lock signal is generated from the invalid sign code comparison means and switches the operating control device to a self-lock state. In this state, even if a plurality of switches are operated, the operation signal to the controlled device is invalidated, the controlled device is not operated, and there is no risk of unauthorized operation by another person.

In the embodiment of the present invention, in the self-lock state, when the user again inputs the same code as the self-lock code, the invalid code comparison means generates a self-lock signal, and the operation control device enters the release state. Can be switched. In this state, similarly to the above, when a code code identical to the operation code code stored in the operation code code storage means is input by operating a plurality of switches in a predetermined order, the operation code code comparison means A signal is generated to operate the controlled device.

Further, the input code generated when the plurality of switches is operated is compared in the fixed code code comparing means with the fixed code stored in the fixed code storing means. When the input code and the fixed code match, the fixed code comparison means generates a trigger pulse. When the trigger pulse is generated, the invalid code storage means is switched to the write mode and stores the code input from the plurality of switches as a new self-lock code. At this time, the timer generates an output that switches the invalid sign code storage means to the write mode for a certain period of time. When a new self-locking code is stored in the invalid code storage means, the previously stored self-locking code is erased. Therefore, thereafter, the newly stored self-lock code is used to set and release the self-lock state.

Embodiments of the present invention will now be described with reference to FIGS. 1 to 4.

First, as shown in FIG. 2, the door has a plurality of switches 11.0 to 11.0 on which numbers O to 9 are displayed. A keyboard with a start switch ST is attached. As shown in FIG. 1, the keyboard 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. Further, the operation control circuit 10 includes, for example, an output boat to which a controlled device 13 having an actuator such as a solenoid or a motor that operates a locking device, a buzzer 14, and a lamp 15 are connected. Buzzer 14
and the lamp 15 constitute an indicator 16. The buzzer 14 generates a sound to confirm the suppressed state when any one of the plurality of switches 11 is pressed. Also, lamp 15
may be a light emitting diode that is energized when an unlocking signal as an operation signal is generated.

The operation control circuit 10 includes a timer means, an operation code code storage means for storing an operation code code, and a plurality of switches 1.
an operation code code comparison means that compares the code input from 1 with the operation code stored in the operation code storage means and generates an unlocking signal as an operation signal to the controlled device 13 when they match; an invalid code storage means for storing a self-locking code and being switched to a readable read mode and a writable write mode; a fixed code storage means for storing a fixed code; and inputs generated from a plurality of switches. fixed code comparison means for comparing the code with a fixed code stored in the fixed code storage means and generating a trigger pulse when the codes match.

The operation control circuit 10 also includes an invalid code storage means for storing a self-locking code, and a plurality of switches 1.
an invalid code code comparison means for comparing the code input from 1 with the self-locking code stored in the invalid code storage means and generating a match signal when they match; It has a self-lock signal state switching means that invalidates the unlock signal to the controlled device 13 based on the coincidence signal. The operation control circuit 10 is provided with state switching means for switching between a self-lock state in which the unlock signal to the controlled device 13 is disabled and a release state in which the unlock signal is not disabled. This state switching means alternately switches the operating control device between a self-locking state and a release state by the repeated output of the invalid sign code comparing means. In the self-lock state, after inputting the same code as the self-locking code through the plurality of switches 11, and then inputting the same code as the operation code through the plurality of switches 11, the controlled device is detected from the operation code code comparing means. An unlocking signal is output to 13.

The operation of the above configuration will be explained below with reference to the operation sequence shown in FIG. Step 2 from the start of step 20
1, it is determined whether or not a code code has been input by pressing a plurality of switches 11. If the code code is not input, the process returns to the start, and if 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 means in the operation code code comparison means. Compare with opcode code. If the input code code does not match the unlock code code, the invalid code code comparison means performs step 23.
Compare the self-locking code and the input code at . If they do not match in step 23, the process returns to the start, and if they match, the state switching means determines in step 24 whether or not the state is in the self-lock state. If it is in the self-locked state, the self-locked state is released in step 25, and then the process proceeds to the start; if it is not the self-locked state, the self-locked 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 the self-locked state, and if it is in the self-locked state, it returns to the start. If it is not in the self-locked state, an unlocking signal is generated in step 32, and after operating the controlled device 13 to unlock the locking device, the process returns to step 20.

If the input code does not match the self-lock code in step 23, the process proceeds to step 26, where the fixed code comparison means compares the input code with the fixed code stored in the fixed code storage means. 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 10 seconds, for example, is set in step 27. Subsequently, in step 28, it is determined whether a certain period of time set by a timer has elapsed. After a certain period of time has elapsed, the process returns to start 20.

If a certain period of time has not elapsed, the process proceeds to step 29, and it is determined by the switch 11 whether or not a key code has been input. If the key code has been input, in step 30, the invalid code storage means stores the input code as a new self-lock code. Store it as a code. At the same time, the invalid code storage means erases the previously stored self-lock code.

Therefore.

Thereafter, the newly stored self-lock code is used to set and release the self-lock state. If the key code is not input in step 29, the process returns to step 28.

Embodiments of the invention may be modified, e.g.

Although FIGS. 1 and 3 show an example in which the operation control device according to the present invention is constructed using a device C such as a microcomputer, as shown in FIG. A control device can be configured. Therefore, the embodiment shown in FIG. 4 will be described below.

The plurality of switches 11 are connected to an unlock code comparator (operation code code comparison means) via a chattering prevention circuit 35.
40. It is connected to a self-lock code comparator (invalid code comparison means) 50, a fixed code comparator 76 (fixed code comparison means), and an OR gate 41. The output of the OR gate 41 is supplied to the buzzer 14, the retrigger shot multivibrator 42, and the address counter 43. The buzzer 14 is energized by the output of the OR gate 41 generated each time the switch 11 is pressed, and generates an auditory signal. Retrigger gunshiyot multipibrator 4
2 generates an output having a pulse width of about 5 seconds when it receives a signal from the OR gate 41, and when it receives the next input within 5 seconds, it starts counting the pulse width again from that point. The one-shot multivibrator 44 generates an output at the falling edge of the pulse when the output of the retrigger one-shot multivibrator 42 stops, and applies a reset signal to the address counter 43 through the OR gate 47. Address counter 43 counts the number of outputs from OR gate 41 and generates an address signal for each digit. The address signal of the address counter 43 is transmitted to the unlock code storage device 45 (operation code storage device), the self-lock code storage device (invalid code storage device) 51, the fixed code code storage device 75 (fixed code code storage device) and the digits. number detector 46.

The digit number detector 46 applies a reset signal to the address counter 43 through an OR gate 47 when the output of the address counter 43 reaches a predetermined digit (for example, 3.5 or 7 digits). The unlock code storage device 45 receives the address signal output from the address counter 43 and outputs the stored operation code code to the unlock code comparator 40.

Similarly, self-lock code storage 51 receives the address signal output from address counter 43 and outputs the stored self-lock code to self-lock code comparator 5o.

Fixed code storage 75 sends the stored fixed code to fixed code comparator 76 when receiving the address signal from address counter 43 . 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 every time they match. When the counter 77 receives an output of a predetermined number of digits from the fixed sign code comparator 76, it generates a trigger pulse to activate the timer 78. 6. The timer 78 is connected to the W/R terminal of the self-lock code storage 51. has been done. Fixed code comparator 76 compares the input code supplied from switch 11 with the fixed code read from fixed code storage 75, and provides an output to timer 78 when they match. Therefore, timer 7
8 generates an output for a certain period of time, for example 10 seconds, and switches the self-lock code memory 51 from the read mode to the writable write mode. When timer 78 is not producing an output, self-lock code storage 51 is switched to a read mode in which it can be read.

The output of unlock code comparator 40 is sent to counter 49. The output of counter 49 is sent to controlled device 13 and display 48 . The output of self-lock code comparator 50 is sent to counter 52. The output of counter 52 is connected to one-shot multivibrator 53.

The output terminal of the one-sided 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 that switches between a self-locking state and a release state of the operation control device. The output of the one-shot multivibrator 53 is connected to a set terminal of a flip-flop 61 via an AND gate 62 and an OR gate 63. In addition, the output of the one-shot multivibrator 53 is output from an AND gate 64.
It is connected to the reset terminal of the flip-flop 61 via. The ζ output terminal of flip-flop 61 is connected to the bases of transistors 71 and 72 and to the inverting input terminal of AND gate 62 to provide a self-lock signal.

The collector of transistor 71 is connected to the output terminal of 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. flip flop 6
The ζ output terminal of 1 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 timer 65 is connected to the inverting input terminal of AND gate 66.

The timer 65 generates an output having a pulse width of a certain time when the ζ output terminal of the flip-flop 61 changes from a low voltage level to a high voltage level and generates a self-lock signal. A timer 65 is connected to the input terminal of the AND gate 67.
An unlocking signal is supplied as the output of , and the output of the counter 49 , and the output of the AND gate 67 is applied to the set terminal of the R/S flip-flop 68 . flip flop 68
The Q output terminal of 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 connected to OR gate 63. The output of OR gate 47 is supplied to each counter 49 and 52 and each reset terminal of flip-flop 68.

In the above configuration, when the operator operates the plurality of switches 11 in a predetermined order, the input code is transmitted to the unlock code comparator 40 and the self-lock code comparator 5.
Assigned to 0. At the same time, the outputs of the plurality of switches 11 are supplied to the address counter 43 via the OR gate 41, so that the address counter 43 supplies address signals to the unlock code storage 45 and the self-lock code storage 51. For this reason, unlock code storage 4
The operation code stored in 5 is sent to the unlock code comparator 40, and the self-lock code stored in the self-lock code storage 51 is sent to the self-lock code comparator 50.

When each digit of the input code code matches the stored operation code code, the unlock code comparator 40 generates an output to the counter 49 for each digit.

When all digits match, the counter 49 generates an output to the controlled device 13 and the display 48. For this reason, the controlled device 13
is unlocked, and the unlocked state is displayed on the display 48. Further, when each digit of the input code matches the stored self-lock code, the self-lock code comparator 50 generates an output to the counter 52 for each digit.

When all digits match, counter 52 generates an output. The output of the counter 52 is a one-shot multivibrator 53
After being shaped into a waveform, the signal is sent to the state switching circuit 60.

In normal use, the state switching circuit 60 is shifted to the released 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 ζ output terminal is at a high voltage level. A low voltage level signal is applied to the inverting input terminal of the AND gate 62, and a high voltage level signal is applied to the inverting input terminal of the AND gate 64. 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 output from the OR gate 63.
is applied to the set terminal of the flip-flop 61 through. Therefore, the flip-flop 61 is switched to the set state, and the Q output terminal is switched to a high voltage level, and the ζ output terminal is switched to a low voltage level. When the flip-flop 61 is in the set state, the operation control device is in a self-locking state.

Therefore, transistors 71 and 72 are turned on,
The output of the counter 49 is the controlled device! 13 and indicator 48
In the self-lock state, in which the output of the OR gate 41 is not applied to the buzzer 14, even if the switch 11 is operated, the buzzer 14 does not make an operating sound, and the code code that is the same as the operation code code is generated. Even if input from switch 11, it is still a controlled device! ! 13 is not activated.

Next, when the operator inputs the same code as the self-lock code through the switch 11, an output is generated from the counter 52 in the same manner as described above. Therefore, pulses are applied from the one-sided 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. Therefore, an output is generated from the ζ output terminal of the flip-flop 61, and an output is generated from the timer 65 for a certain period of time, for example, 3 minutes. The operator must input the same code as the operation code from the switch 11 during this fixed period of time. That is, when the same code as the operation code is inputted through the switch 11 during the time when the timer 65 is generating an output, the counter 49 generates an unlock signal as an output. Therefore, AND gate 67 generates an output, flip-flop 68 is set, and an output is generated from the Q output terminal.

When a predetermined period of time elapses in this state and the timer 65 times up, the output of the timer 65 becomes a low voltage level, so the AND gate 66 does not produce an output. However, unless the counter 49 generates an unlock signal during the time set in the timer 65, the flip-flop 68 will not be set.

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. In this manner, the state switching circuit 60 is alternately switched between the self-lock state and the release state each time the counter 52 generates an output.

When changing the self-locking 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 comparator 76 compares the input code with the fixed code read from the fixed code storage 75, and
When these match, an output is given to the counter 77.

Counter 77 provides an output to timer 78 when all digits match. Therefore, the switches 11 are pressed in a predetermined order while the timer 78 is generating an output for 10 seconds. The code generated at this time is stored in each address of the self-lock code storage device 51. Therefore, after 10 seconds have elapsed and the output of the timer 78 has stopped, the self-lock code comparator 50 compares the code code newly stored in the self-lock code storage 51H.

Various modifications can be made to the above-described embodiments of the invention. Although the above embodiment describes a case where the operator is absent from the house for a long time, the present invention can be applied to other cases as well. For example, the operation control device of the present invention can be installed in a guest locker at a golf course or in a rental condominium. In this case, the administrator can switch unused lockers or apartments, or lockers for which a predetermined period of time has passed, to a self-locking state.

Further, like the self-lock code storage device 51, it is also possible to configure the unlock code storage device 45, which stores the operation code code, to be switched to a light mode in which a desired code code can be stored.

Further, in the embodiments described above, an example was shown in which the operation control device according to the present invention is used to operate a lock device, but it is clear that the device can also be used to control the operation of other devices other than the lock device.

According to this invention, since the self-lock code can be changed as appropriate, it is possible to prevent unauthorized unlocking, theft, and intrusion of the operation control device. Furthermore, since the self-lock code is changed by inputting the fixed code, unauthorized changes to the self-lock code can be prevented.

[Brief explanation of the drawing]

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 invention, and FIG. 3 is a flowchart showing an operation sequence for operating the electric circuit of FIG. 2. , FIG. 4 is a circuit diagram showing an electronic circuit of the operation control device of the present invention. 110. Switch, 400. Unlock code comparator (operation code comparison means), 45. . Unlock code storage device (operation code storage means),
170. Controlled device, 510. Self-locking code storage device (invalid code storage means). 500. Self-lock code comparator (invalid code comparison means), 600. State switching circuit (state switching means)
, 75. , fixed code code storage device (fixed code code storage means), 761. Fixed code code comparator (fixed code code comparison means), 781. Timer, patent author Kazugo Shimizu (and 1 other person), representative of Kokusan Metal Industry Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (2)

[Claims] (1) A plurality of switches, an operation code storage means for storing operation code codes, and a comparison between the operation code codes input from the plurality of switches and the operation code codes stored in the operation code storage means; an operation code code comparing means for generating an operation signal to the controlled device when the self-lock code matches; an invalid code storage means for storing the self-locking code and switching to a readable read mode and a writable write mode; and a fixed code. A fixed code storage means for storing a code, and a fixed code for comparing the input codes generated from the plurality of switches with the fixed code stored in the fixed code storage means and generating a trigger pulse when the codes match. Code code comparison means compares the operation code inputted from a plurality of switches with the self-locking code stored in the invalid operation code storage means, and generates a match signal when the codes match. It has a code comparison means, and a state switching means for generating a self-lock signal that invalidates the operation signal to the controlled device based on the matching signal of the invalid operation code code comparison means, and the invalid operation code code storage means is fixed. An operation control device characterized in that, when switched to a light mode by a trigger pulse of a code code comparing means, an operation code input from a plurality of switches is stored as a new self-lock code. (2) The operation control device according to claim (1), wherein when the trigger pulse of the fixed code code comparison means is generated, the invalid operation code code storage means is switched to the write mode for a certain period of time by a timer.