JPH032478A - Operation controller - Google Patents

Abstract

PURPOSE:To prevent wrong unlocking by a method in which mode is switched to write mode by the trigger pulse of a pulse code comparator and codes input from switches are stored as new self-lock codes. CONSTITUTION:An operation controller consists of a keyboard with switches 11, a switch 12 for setting recitation numbers, a receiving circuit 17, and an operation control circuit 10 having a pulse code comparator to sent out trigger pulses when signals from the circuit 17 coincide with a specific pulse code in the memories by comparison. An electromagnetic wave is sent out toward the circuit 17 to cause a trigger pulse to generate, it is switched to write mode, and codes input 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 Field of the Invention The present 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.

Revision Δ Throw 4 In recent years, systems have been proposed that use magnetic cards or punch cards in addition to using metal keys to lock and unlock door rotor control devices. 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 a long time, or when an object is left unused or unusable, it is difficult for someone else to do so. 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 theft 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 stored in the operation code storage means for inputting code codes from the plurality of switches. and an operation code code comparison means for comparing the codes and generating an operation signal to the controlled device when the codes match.

invalid code storage means that stores a self-locking code and can be switched to a readable read mode and a writable write mode; a receiving means that receives an electromagnetic wave signal; and a change code storage means that stores a specific pulse code; a pulse code comparison means for comparing the signal generated from the receiving means with a specific pulse code stored in the change code storage means and generating a trigger pulse when the two match; and a code code input from a plurality of switches. and a controlled device based on the matching signal from the invalid code comparing means. and state switching means for generating a self-locking signal for disabling the operating signal to the terminal. When the invalid code storage means is switched to the write mode by the trigger pulse of the pulse code comparison means, it stores the code codes input from the plurality of switches as new self-lock code codes.

Further, when a trigger pulse of the pulse code comparing means is generated, the invalid code storing 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.

Function-■ When a code code identical to the operation 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 generates an operation signal, Able to operate a controlled device. 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 condition.

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 plurality of switches are operated in a predetermined order and the same code code as the operation code stored in the operation code code storage means is input.

The operation sign code comparison means generates an operation signal to operate the controlled device.

Further, when an electromagnetic wave is emitted toward the receiving means, the output signal of the electromagnetic wave received by the receiving means is compared in the pulse code comparing means with a specific pulse code stored in the modified code storing means. When the output signal of the receiving means and the pulse code match, the pulse code comparing 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-lock code is stored in the invalid code storage means, the previously stored self-lock 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 be described below with reference to FIGS. 1 to 4.

First, as shown in FIG. 2, a keyboard having a plurality of switches 11 on which numbers O to 9 are displayed and a start switch ST is attached to the door. 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, a password setting switch 12, and a receiving circuit 17 as a receiving means are connected.

The operation control circuit 10 also has an output port to which a controlled device 13 having an actuator such as a solenoid or a motor for operating a locking device, a buzzer 14, and a lamp 15 are connected. The buzzer 14 and lamp 15 constitute a display 16. The buzzer 14 generates a sound to confirm the suppressed state when any one of the plurality of 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.

The operation control circuit 1o 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; , a change code storage means for storing a specific pulse code, and a signal generated from the reception means are compared with a specific pulse code stored in the change code storage means, and when these match, a trigger pulse is generated. and pulse code comparison means.

The operation control circuit 10 also includes an invalid code storage means for storing a self-locking code, and a plurality of switches 1.
The invalid code comparing means compares the code input from 1 with the cell block code stored in the invalid code storing means and generates a match signal when they match, and the invalid code comparing means matches. It has a self-lock signal state switching means for disabling the unlock signal to the controlled device 13 based on the 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 has been input by suppressing the 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 34 and then the process returns to the start.

If it matches the unlock code in step 22, the state switching means determines in step 32 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 33, and after operating the controlled device 13 to unlock the locking device, the process returns to step 20.

If no switch input is received in step 21, the process proceeds to step 26, where it is determined whether the receiving circuit 17 has received an infrared signal. If the infrared signal is not received, return to step 20; if the infrared signal is overlapped, return to step 27
Proceed to. In step 27, the pulse code comparison means determines whether the received infrared signal includes a specific pulse code.

If the received infrared signal matches a particular pulse hood stored in the modification code storage means, a timer of, for example, 10 seconds is set in step 28. Subsequently, in step 29, 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 30, 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 31, 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. Step 3
If the key code is not input in 0, step 2
Return to 9.

Modifications are possible to embodiments of the invention. for example.

1 and 3 show an example in which the operation control device according to the present invention is configured using an IC such as a microcomputer, but as shown in FIG. 4, the operation control device according to the present invention can also be implemented using a discrete circuit. The 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 , is connected to a self-lock code comparator (invalid code comparison means) 50 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. 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 One Shigot Multivibrator 42
When it receives a signal from the OR gate 41, it generates an output having a pulse width of about 5 seconds, 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 applied to an operation code code storage 45 (operation code code storage means), a self-lock code storage 51 (invalid code storage means) and a digit 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 operation 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 50.

The receiving circuit 17 includes a light receiving sensor 78 and an amplifier 73 that amplifies the output of the light receiving sensor 78. The output of the amplifier 73 is connected to a pulse code comparator 74 (pulse code comparison means) and a read code detector 75. The lead code detector 75 detects the lead code included at the beginning of the infrared signal and changes the code to a change code storage unit 76 (change code storage means).
generates an address signal to read out a specific pulse code stored in the pulse code. The pulse code read from the change code storage 76 is applied to the pulse code comparator 74. The timer 79 is connected to the W/R terminal of the self-lock code memory 51. Pulse code comparator 74 is connected to amplifier 7
3 and the pulse code read from the change code storage 76, and when they match, an output is given to the timer 79. Therefore, the timer 79 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 write mode in which writing is possible. When timer 79 is not producing an output, self-lock code storage 51 is switched to read mode. Light receiving sensor 78
A switch 77 is connected to the switch 77, and when the switch 77 is turned on, the light receiving sensor 78 is activated. However, switch 7
The light receiving sensor 78 may be operated at all times without providing the sensor 7.

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-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 that switches between a self-locking state and a releasing 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. Also, the output of the one-shot multivibrator 53 is output from the AND gate 6
4 to the reset terminal of the flip-flop 61. The Q 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. transistor 7
The collector of No. 2 is connected to the input terminal of the buzzer 14, and the emitter is grounded. The ζ output terminal of the flip-flop 61 is the inverting input terminal of the AND gate 64, and 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 is a flip-flop 61
When the ζ output terminal of the converter changes from a low voltage level to a high voltage level and generates a self-lock signal, it generates an output having a pulse width of a certain time. An unlocking 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 R/
It is applied to the set terminal of the S flip-flop 68.

The Q output terminal of the flip-flop 68 is an AND gate 66
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 the OR gate 47 is connected to each counter 49 and 52 and the flip-flop 6.
8 reset terminals.

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.

Since 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 address signals to the operation code memory 45 and the self-lock code memory 51. For this reason,
The operation code code stored in the operation code code storage 45 is sent to the unlock code comparator 40. Further, the self-lock code stored in the self-lock code storage 51 is applied 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 6o is shifted to the released state. In this state, Flipflora Pro 1 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 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, and the Q output terminal is switched to a high voltage level, and the output enable 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, the transistors 71 and 72 are turned on, the output of the counter 49 is not applied to the controlled device 13 and the display 48, and the output of the OR gate 41 is not applied to the buzzer 14. In the self-locking state, the switch 11 is operated. However, the buzzer 14 does not generate an operating sound, and even if the same code as the operation code is input from the switch 11, the controlled device 13 will not be operated.

Next, when the operator inputs the same code as the self-lock code from the switch 11, an output is generated from the counter 52 in the same manner as described above. Therefore, since a pulse is applied from the one-shot multivibrator 53 to the AND gates 62 and 64, 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 while 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, so when the timer 65 stops outputting, the AND gate 66 generates an output. The flip-flop 61 is set through the OR gate 63 and switched to a self-locking 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-lock code, an infrared light emitter (not shown) emits infrared light including a predetermined pulse code toward the light receiving sensor 78. The pulse code comparator 74 compares the input code with the pulse code read from the change code storage 76 via the light receiving sensor 78, and provides an output to the timer 79 when they match. Therefore, the switches 11 are pressed in a predetermined order while the timer 79 is generating an output for 10 seconds. The code generated at this time is stored in each address of the self-lock code storage 51. Therefore, after 10 seconds have passed and the output of the timer 79 stops.

The code code newly stored in the self-lock code storage 51 is compared by the self-lock code comparator 5°.

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.

Also, similarly to the self-lock code storage device 51.

It is also possible to configure the operation code storage device 45, which stores the operation code, to be switched to a light mode in which a desired 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. Although an example is shown in which infrared rays are used as the electromagnetic wave, it is also possible to use other electromagnetic waves such as radio waves and visible light in addition to infrared rays.

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 based on electromagnetic waves containing a specific pulse code, unauthorized changes to the self-lock code can be prevented.

[Brief explanation of 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 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, 131. Controlled device, 170. Receiving circuit, 400. Unlock code code comparator (unlock code code comparison means), 450. Unlock code storage (
unlock code code storage means) 510. Self-lock code storage device (invalid code storage means), 50. , self-lock code comparator (invalid code comparison means)-5
4,. Timer (mode switching means), 600. State switching circuit (state switching means) 74. , pulse code comparison means, 76, , pulse code storage means, patent applicant
Kokusan Metal Industry Co., Ltd.

Claims (2)

[Claims] (1) A plurality of switches, an operation code storage means for storing operation code codes, and a comparison between the code codes inputted from the plurality of switches and the operation code codes stored in the operation code storage means, and whether they match. operation code comparison means for generating an operation signal to the controlled device; invalidation code storage means for storing the self-locking code and switching to a readable read mode and a writable write mode; A receiving means, a modified code storing means for storing a specific pulse code, and a signal generated from the receiving means is compared with a specific pulse code stored in the modified code storing means, and when these match, a trigger pulse is generated. The generated pulse code comparison means compares the code input from a plurality of switches with the self-lock code stored in the invalid code storage means, and when they match, an invalid code code comparison generates a match signal. and state switching means for generating a self-lock signal for disabling the operation signal to the controlled device based on the matching signal of the invalid code comparing means, and the invalid code storing means An operation control device characterized in that when switched to a light mode by a trigger pulse, a code 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 pulse code comparison means is generated, the invalid code storage means is switched to the write mode for a certain period of time by a timer.