JPH032477A - 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 a mode switcher, and a code input from switches is stored as new operation code or self-lock code. CONSTITUTION:An operation controller consists of a keyboard 10 with switches 11, a setting switch 13 as a switcher, and an operation control circuit 12 which has an operation code memory, an invalid code memory to memorize self-lock code, and a mode switcher by the switch 13. Mode is switched to write mode by the switch 13, code input from the switches 11 is stored as new operation code or self-lock code in each memory in the circuit 12, and the previous (so far) code is each erased. The occurrence of wrong unlocking can thus be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a controlled device, particularly 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 controlled device. Furthermore, a keyless entry system has been proposed in which an electronic lock is unlocked by inputting the same code number as a pre-registered code number using a plurality of switches, without using a portable key or card.

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 item that is not in use is left unused or unusable, multiple unauthorized persons can There is a risk that the lock may be unlocked if the switch is repeatedly operated incorrectly. Therefore, although not publicly known, a keyless entry system that can switch to a self-locking state has been proposed. [Self-locked state] refers to a state in which the locking device is not unlocked even if a regular unlocking 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 code storage means for inputting code codes from the plurality of switches. an operation code code comparison means that compares the codes and generates an operation signal to the controlled device when they match; an invalid code code storage means that stores the self-locking code; an operation code code storage means and an invalid code storage means. mode switching means for selectively switching from a read mode in which data can be read to a write mode in which data can be written; and code codes input from a plurality of switches are compared with a self-lock code stored in an invalid code storage means to match. and state switching means that generates a safe lock signal that invalidates the operation signal to the controlled device based on the coincidence signal of the invalid code comparison means. When the mode switching means switches to the light mode, the operation code code storage means and the invalid code storage means store the code codes input from the plurality of switches as new operation code codes or self-lock code codes. The mode switching means has a setting switch and a selection circuit connected to the setting switch, and the selection circuit selects either the operation code code storage means or the invalid code storage means depending on the length of time that the setting switch is operated. Switch from read mode, which allows data to be read, to write mode, which allows data to be written.

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 a plurality of switches are operated in a predetermined order and the same code code as the operation code code stored in the operation code code storage means is input, 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 danger of it being operated 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, when the mode switching means switches the operation code code storage means and the invalid code code storage means to the write mode, the code codes input from the plurality of switches are stored as new self-lock code codes. Therefore, the newly stored operating code code or self-locking code is then used to activate the controlled device or setting or canceling the self-locking state, and the previously stored operating code code or self-locking code is erased. Ru.

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

First, as shown in FIG. 1, the door has a plurality of switches 11.1 and 11.numbers 0 to 9 displayed on the door. Check-in switch C, check-out switch O, start switch S
A keyboard 10 having a T is attached. As shown in FIG. 2, the keyboard 10 is electrically connected to an operation control circuit 12 composed of, 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 a switching means are connected. The operation control circuit 12 also includes, for example, a controlled device W17 having an actuator such as a solenoid or a motor that operates a locking device, a buzzer 18, and a base of each transistor 14, 15, and 16 having a collector connected to a buzzer 18 and a display 19. It has a connected output port. The emitters of transistors 14, 15 and 16 are all grounded. The buzzer 18 generates a sound to confirm the suppressed state when any one of the plurality of switches 11 is pressed. Further, the display device 19 is a light emitting diode that is activated when an unlock signal as an operation signal is generated.

The operation control circuit 12 includes a timer means, an operation code storage means for storing an operation code code, and a plurality of switches 1.
an operation code code comparison means for comparing the code input from 1 with the operation code stored in the operation code storage means and generating an unlocking 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 and the code input from the plurality of switches 11 with the self-lock code stored in the invalid code storage means. It has invalid code comparison means that generates a coincidence signal when they match, and self-lock signal state switching means that invalidates the unlock signal to the controlled device 17 based on the coincidence signal of the invalid code comparison means. . The operation control circuit 12 is provided with state switching means for switching between a self-lock state in which the unlock signal to the controlled device 17 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. 17
An unlock signal is output.

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 it is determined whether the setting switch 13 has been turned on.

If it is not turned on, the process proceeds to step 23, where the input code code is compared in the operation code comparison means with the operation code code as an unlock code stored in the operation code storage means. If the input code does not match the unlock code, the invalid code comparison means compares the self-lock code and the input code in step 24. If they do not match in step 24, the process returns to the start, and if they match, the state switching means determines in step 25 whether or not the self-lock state exists. If it is in the self-locked state, the self-locked state is released in step 26, and then the process proceeds to the start; if it is not in 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 23, 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 17 to unlock the locking device, the process returns to the state 20.

When the setting switch 13 is operated in step 22, a timer of, for example, 10 seconds 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 the predetermined time has not elapsed, the process proceeds to step 29, where it is determined whether or not a key code has been input using the switch 11. If the key code has not been input in step 29, the process returns to step 28. When the key code is input, it is determined in step 3o whether the setting switch 13 has been kept on for one second or more. If the input code is held for one second or more, the process proceeds to step 31, where the input code is stored as a self-locking code in the invalid code storage means.

At the same time, the invalid code storage means erases the previously stored self-lock code.

Therefore, the newly stored self-lock code is used to set and release the self-lock 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 as an operation code code in the operation code storage means.

At the same time, the operation code storage means erases the previously stored operation code code. Therefore, the newly stored operation code is used to operate the controlled device thereafter.

The embodiments of the present invention can be modified.1 For example, FIGS. 2 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 FIG. As shown in FIG. 2, the operation control device according to the present invention can also be constructed using discrete circuits.

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 and an OR gate 41 . The output of the OR gate 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. Retrigger one shot 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 unlock code memory (operation code code storage means) 45, a self-lock code memory (invalid code code storage means) 51, 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 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. The unlock code storage device 45 and the self-lock code storage device S1 have a W/R terminal connected to the setting switch 13 via the selection circuit 54. The setting switch 13 and the selection circuit 54 constitute mode switching means.

FIG. 5 shows a detailed electrical circuit of the selection circuit 54.

The 0 selection circuit 54 has one end of the setting switch 13 connected to the ground and the other end connected to the power supply via the resistor 73.
The other end of the setting switch 13 and the resistor 73 are connected to which branch point 74 the inverter 75 is connected to, the timer circuit 76 connected to the inverter 75, the timer circuit 77 connected to the branch point 74, and the output of the timer circuit 77. A monostable multivibrator 78 that generates a pulse at the rising edge and a branch point 74
, connected to the branch point 74 via an AND gate 79 connected to the timer circuit 79 and the monostable multivibrator 78 and a 1 inverting input terminal, and connected to the monostable multivibrator 7
8 and an AND gate 80 connected to the gate. AND gates 79 and 80 are connected to unlock code storage 45 and self-lock code storage 51 via timers 81 and 82, respectively. When the setting switch 13 is turned on and the output of the inverter 75 becomes a high level, the timer circuit 76 generates a pulse with a pulse width slightly longer than 1 second, for example, 1.0 seconds.
Generates an output with a pulse width of 2 seconds. Also, the timer circuit 7
7 produces an output with a pulse width of 1 second.

The monostable multivibrator 78 generates a pulse with 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 turns on, generates an output for, for example, 10 seconds, and stores the unlock code memory 45. Switch to 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 memory 51 to write mode.

When the setting switch 13 is in the off state or after 10 seconds have elapsed since the setting switch 13 is turned on, the unlock code storage device 45 or the self-lock code storage device 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 17 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-locking 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 18, 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 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-lock code stored in the self-lock code storage 51 is applied to the self-lock code comparator 5o.

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 17 and the display 48. For this reason, the controlled device 17
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 by , 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, flip-flop 6
1 is 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 AND gate 62, and this output is applied to the set terminal of flip-flop 61 through 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 ζ output terminal is switched to a low voltage level. flip flop 6
1 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 17 and the display 48, and the output of the OR gate 41 is not applied to the buzzer 18. In the self-locked state, the switch 11 is not operated. However, even if the operating sound from the buzzer 18 is not generated, and even if the same code code as the operation code is input from the switch 11, the controlled device 1
7 is not activated.

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, pulses are applied from the one-shot multivibrator 53 to the AND gates 62 and 64.

Therefore, an output is generated from the AND gate 64.

Flip-flop 61 is switched to a 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. In other words, the operator must input the same code as the operation code during the time when the timer 65 is generating an output. When input by the switch 11, 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, during the time set in the timer 65, Unless the counter 49 generates an unlock signal, the flip-flop 68 will not be set, so the timer 6
5 stops outputting, the AND gate 66 generates an output, and the flip-flop 61 passes through the OR gate 63.
, and switch to 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 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, when 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 the writable write mode. Setting switch 13 is 1.02
When pressed for more than a second, the timer 82 switches the self-lock code memory 51 to a writable write mode. The switches 11 are pressed in a predetermined order while the selection circuit 54 is generating an output for 10 seconds. The 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 is turned off, the newly stored operation code code or invalid code code in the unlock code storage device 45 or self-lock code storage device 51 is detected by the unlock code comparator. 40 or self-lock code comparator 50.

Various modifications can be made to the above-described embodiments of the invention. In the above embodiment, the case where the operator is absent from the house for a long time has been described, but 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.

[Brief explanation of 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. 2. , FIG. 4 is a circuit diagram showing the electronic circuit of the operation control device of the present invention, and FIG. 5 is a circuit diagram showing details of the selection circuit of the operation control device. 110. switch, 130. Setting switch (mode switching means), 170. Controlled device. 401. Unlock code code comparator (unlock code code comparison means), 450. Unlock code code storage device (unlock code code storage means), 500. Self-lock code comparator (invalid code comparison means), 510.
Self-lock code storage device (invalid code storage means)
, 54. . Selection circuit (mode switching means), 609. State switching circuit (state switching means), Figure 3 Figure 5 Figure 5

Claims (1)

[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 a match is found. an operation code code comparison means for generating an operation signal to the controlled device when the control is performed; and an invalid code storage means for storing the self-locking code;
mode switching means for selectively switching the operating code code storage means and the invalid code storage means from a read mode in which reading is possible to a write mode in which writing is possible; and code codes inputted from the plurality of switches are stored in the invalid code code storage means. an invalid code comparison means that generates a match signal when the self-lock code is compared with the self-lock code that has been received, and a self-lock that disables the operation signal to the controlled device based on the match signal from the invalid code comparison means. and a state switching means for generating a signal, and the operation code code storage means and the invalid code storage means convert the code input from the plurality of switches into a new operation code when the mode switching means switches to the light mode. An operation control device characterized in that it is stored as a code or a self-locking code. (2) The mode switching means has a setting switch and a selection circuit connected to the setting switch. 2. The operation control device according to claim 1, wherein the operation control device selectively switches from a read mode in which reading is possible to a write mode in which writing is possible.