JPH03180679A - Digital locking switch device for switch signal - Google Patents

Abstract

PURPOSE:To prevent opening and closing operation by a third party by inputting an identification number from a key switch to bring a lock into an unlocking state and opening and closing a shutter through operation of a switch for control of opening and closing. CONSTITUTION:A digital key box 1 comprises operation display lamps 8 and 9 formed with a ten key switch and a light emitting diode, a source display lamp 10, and push button switches 11, 12, and 13 for stopping and operating forward and reverse of a switch signal 3. The digital key box 1 is mounted to an outer wall 2 of a building and the switch signal 3 and a control panel 4 are mounted above a shutter. Further, a control signal from a control box 5 is inputted through a cable 6 to the control panel 4. A signal from the digital key box 1 is inputted through a cable 6a to the control box 5. This constitution provides excellent burglarproofing ability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital lock switch device for a switch for opening and closing shutters installed at the entrances and exits of buildings.

[Prior art and one problem to be solved by the invention] Conventionally,
In order to open and close the shutter, this type of switch is provided with an operation switch mechanism such as a three-point push button switch for selecting forward or reverse opening of the switch. For reasons of safety and crime prevention, it would be a problem if these operation switch mechanisms were operated by a third party other than those involved, so conventionally the operation switch mechanisms were housed in a switch box with a locking device. was. However, with this system, even if the person involved does not have the key, he or she may not be able to unlock the switch box, so it is necessary to constantly manage and carry the key, which is a hassle. Moreover, there was an inconvenience in that the shutter could not be opened or closed when the administrator was absent. Therefore, it may be possible to unlock the lock by digitally inputting the PIN number, but
In this case, if the correct PIN number is entered and the door is left unlocked, or if the door is left half-open to the extent that no one can enter or exit, the unlocked state will not be reset and the door will be unlocked. There is a problem in that opening and closing operations may be performed by a person.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a digital lock switch device for a switch which can eliminate these drawbacks, a key switch means for digitally inputting the
a number determining means for determining whether or not the input number from the key switch means matches a registration number registered in advance; In response to the output signal, the unlocking command means outputs an operation permission command to the switch operation switch mechanism that selects forward or reverse drive of the switch to make it into an unlocked state, and the unlocking command means further includes: , the opening/closing operation limiting means is provided to limit the operation of the switch operation switch mechanism within a certain period of time or within a specified number of times after the output of the operation permission command, and thereafter return to the locked state. This is a characteristic feature.

With this configuration, the present invention is configured to automatically return to the locked state after a certain period of time or when the number of steps exceeds - after the lock is unlocked.

[Embodiment] Next, an embodiment of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a digital key box using a numeric keypad, and the digital key box 1 is attached to a wall 2 on the outside of the building.

Further, a switch (motor) 3 and a control panel 4 for controlling the drive of the switch 3 are provided above the shutter, and the control panel 4 receives control signals from a control box 5 via a cable 6. A signal from the digital key box 1 is input to the control box 5 via a cable 6a.

Figure 2 shows a front view of the digital key box, which includes numeric keys from rQJ to r9J,
Each key switch with a RESET key, an operation indicator lamp 8.9 consisting of one light emitting diode, and a power indicator lamp 10. Three-point pushbutton switches 11, 12, and 13 for forward/reverse stop operation of the switch 3 are provided.

FIGS. 3, 4, and 5 show switch circuit diagrams in which the present invention is implemented. First, reference numeral 14 is a diode matrix, and the diode matrix 14 causes the digital key box 1 to The push operation signals of the key switches 1 to 9 are decoded into binary signals. Further, 15 is a circuit that acts as a buffer,
The buffer circuit 15 receives the output from the diode matrix 14 and provides the output necessary to drive the circuit connected to the next stage. This buffer time N15
1 can be easily constructed using, for example, a Schmitt trigger circuit, an inverting amplifier circuit, etc., but its output terminal is connected to one input terminal of the comparison gate circuit FII 116 and a diode 17.
is connected to one terminal of the The other terminal of the diode 17 is connected to a clock terminal of a decimal counter circuit N118 with a decoder and one terminal of an AND circuit 19. Also, "1" to " in the above decimal counter times fi18
Each output terminal of "4" is connected to each 0 of digital switches 21 to 24.
Each is connected to the 0M terminal. The outputs from these digital switches 21 to 24 are connected to diodes 25 to 2.
8 to each of the other input terminals of the comparison gate 16. Also comparison gate 16
The output terminal of is connected to an AND circuit 29, and the output of the AND circuit 29 is supplied to a clock terminal of a decimal counter 30 with a decoder.

42 is a mono multivibrator, which receives the output from the decimal counter circuit 30 and outputs it for a certain period of time, and its output terminal is the reset terminal of the decimal counter circuit 18.30. It is connected to and used as a reset output, and is also used as a base current output for driving the transistor 32 that performs a switching function. This transistor 32
The operation display lamps 8 and 9 and the relay coils of a rise control relay switch RU and a fall control relay switch RD are connected to the collector circuit of the control unit 1, respectively. Also 3
5 is a relay coil of a stop control relay switch R5, and the switch R5 is connected independently of the transistor 32.

And the switch contacts RU, R of each of these relay switches
D and R8 are wired to the switch power supply control circuit 36 provided in the control panel 4, and the switch contacts RU and RD for raising control and lowering control are wired to the relay switch R.
It is closed by energizing U and RD and exciting the Lou coil.

In addition, the stop control switch contact R3 is opened when the stop control relay switch R3 is energized and the relay coil is excited, and these operations cause the corresponding opening, closing, and stopping of the shutter. It is configured to be able to perform each control. still,
RYU shown in the power supply control circuit 36 is a rising relay switch and its switch contact, RYD is a falling relay switch and its switch contact, LSU is an upper limit switch,
LSD is a lower limit switch. In addition, 38 is a power supply circuit for supplying power to each member such as the above-mentioned relay circuits and digital circuits, but this circuit has an internal circuit configuration similar to the above-mentioned power supply control circuit 36, so a detailed explanation is omitted. do.

On the other hand, 39 is a mono multivibrator, and the output from the AND circuit 19 and the output from the reset key switch R via the buffer circuit 15a are input to the input terminal A of the mono multivibrator 39. ing. Furthermore, the output from the output terminal "9" of the decimal counter circuit 18 is input to the other input terminal of the AND circuit 19 and the clock enable terminal thereof. The output from the AND circuit 19 and the output from the buffer circuit 15a are input to the input terminal A of the mono multivibrator 39.

In the mono multivibrator 39, when there is a signal input to the input terminal A, the output from the output terminal Q is the transistor 4.
This results in a base current output of 0, which causes a buzzer (alarm) 4 connected to the collector terminal side of the transistor 40.
1 is energized to emit an alarm sound.

Next, the operation of the circuit when there is a signal from the digital key box 1 will be explained. Here, the recitation number (
Assume that the registration number) is a four-digit number. Then, when there is a push operation signal input from digital key box 1,
The signal decoded by the diode matrix 14 is
The signal is input to one input terminal of a comparison gate circuit 16 via a buffer circuit 15, and is also supplied via a diode 17 to a clock terminal of a decimal counter circuit 18.

As a result, the decimal counter circuit 18 increments. In the digital key box 1, when the -th digit is first pressed, the decimal counter circuit 18 outputs from the output terminal "1", and this output is input to the digital switch 21.

A recitation number is preset and registered in the digital switch 21, and upon receiving the output from the decimal counter circuit 18,
A binary output corresponding to the recited registration number is input to the other terminal of the comparison gate circuit 16. When the signal from the digital switch 21 and the signal from the digital key box 1 side match, all four sets of comparison gate circuits 16 output to the AND circuit 29. Next, when the second digit is pressed, the digital switch 22 outputs the corresponding setting signal to the comparison gate circuit 16 by the output from the output terminal "2" of the decimal counter 1IPt18, and in the same manner as above, this signal is and the signal from the digital key box 1 are compared. In this way, when all four digit signals match the registered signal, the AND circuit 29 outputs a signal of the logical value "1" of the opening degree to the decimal counter circuit 30 to cause it to step. Then, the decimal counter circuit 30 outputs from the output terminal "4" only during the timer time when the capacitor C5 is discharged, resets the decimal counter circuit 18.30, and supplies the base current to the transistor 32 to display the display. The lamp 8.9 is turned on, and the open push button switch 11 and the close push button switch 13 are turned on during this timer period.
In such a case, the relay coils of the corresponding relay switches RU and RD are energized, and the switch contacts RU and RD provided in the power supply control circuit 36 are closed, and the motor 37 that constitutes the switch 3 is activated. The forward and reverse drive control is performed to open and close the shutter.

On the other hand, if there is an error in the signal from the digital key box 1, the input signals at the comparison gate circuit 16 will not match.
Therefore, the logical value "1" is not output from the AND circuit 29, and the decimal counter circuit 18 increments in accordance with the number of times the push operation is performed. When the push operation is repeated, an output is output from the output terminal "9" of the decimal counter circuit 18 to the AND circuit 19. The AND circuit 19 receives this output signal and the signal from the push operation from the digital key box ■ and outputs a signal with a logical value rlJ. When this is input to the mono multivibrator 39, the mono multivibrator 39 sends the signal to the transistor 40. A base current signal is output for a certain period of time until the capacitor C1 is discharged, and the buzzer 41 is energized to emit an alarm sound.

Also, when the reset switch R is operated, an alarm sound is emitted in the same way, and the decimal counter circuit 18.30
Reset.

In the embodiment of the present invention configured as described above, when opening and closing the shutter by driving the motor 37 forward and backward, it is necessary to input a code number from the digital key box 1 to open the shutter. In other words, in this device, a multi-digit recitation number is input from the digital key box 1, but if the entered recitation number is determined to be correct, the mono multivibrator 42 that receives this output will actuate the transistor 32. By flowing the base current, the transistor 32 is brought into a drive state, thereby causing the on/off switch 11. of the on/off operation switches.
13 is unlocked when the push operation is permitted.

Therefore, in this unlocked state.

By pressing the opening switch 11 or the closing switch 13 arbitrarily, the motor 37 is opened in forward and reverse directions, and the opening and closing of the shutter can be controlled. As a result, there is no need to carry and manage keys one by one as in the past. Note that the stop switch 12 can be operated at any time without unlocking the door.

Moreover, the operation of this operation switch 11.13 is limited to a certain period of time until the capacitor C5 provided in the mono-multivibrator 42 is discharged, and after this period of time, the unlocked state is reset and the locked state returns again. In order to do so, enter the correct PIN number and leave it unlocked.
Even if the administrator leaves the room, the door will be automatically locked to prevent a third party from opening or closing the door, ensuring safety and security.

This will further ensure the integrity of opening/closing management.

In carrying out the present invention, in the above embodiment, after entering the correct PIN number, the lock is unlocked.

The configuration is such that if the operation switch 11 or 13 is not operated within a certain period of time, the locked state is automatically returned to the locked state. Decimal counter circuit 3
The output terminal of the 4th ti (the number that matches the number of digits of the recited number) of 0 is connected to the base terminal of the transistor 32, and the emitter terminal of the transistor 32 is connected to the reset terminal of the decimal counter 30.18. By doing this, after the lock is unlocked and the operation switch 11 or 13 is operated only - times, the unlocked state is automatically reset and the locked state is returned. , it is also possible to do it like this.

[Operations and Effects] In summary, since the present invention is configured as described above, the lock is unlocked by a command from the unlocking command means based on the input of the PIN number, and in this state, the forward and reverse active operation of the switch is activated. The locking operation can be performed selectively by operating a switch mechanism, thereby eliminating the need for troublesome and complicated key management. However, this unlocking command means is provided with an opening/closing operation restriction means. If the opening/closing operation limiting means imposes a time limit, the unlocked state is limited within a certain period of time, whereas if the opening/closing operation limiting means limits the number of operations, the unlocking state is limited to a certain period of time. The state is limited to a predetermined number of times, and when these limits are exceeded, the switch cannot be activated unless the correct PIN number is input again.

As a result, if you enter the correct PIN number and leave the lock in the unlocked state without opening or closing it, or if you operate it a predetermined number of times, it will automatically return to the locked state after you perform this operation. However, it is necessary to input the overwhelming code number again, which can prevent manipulation by a third party. Therefore, it is possible to create a digital lock switch with excellent safety and crime prevention properties.

[Brief explanation of drawings]

The drawings show an embodiment of the digital lock switch device for a switch according to the present invention, in which Fig. 1 is a schematic side view of the shutter, Fig. 2 is a front view of the digital key box, and Fig. 3 is a schematic side view of the shutter. Lock switch circuit diagram, Figure 4 is a power supply circuit diagram for supplying power to the digital lock circuit, - Figure 5
The figure is a power supply control circuit diagram of the switch. In the figure, 1 is a digital key box, 11, 12, 13 are operation switches, 32 is a transistor, 30 is a decimal counter circuit, and 42 is a mono multivibrator. Procedural Amendment,. picture. flat bottom 0.1 February 3rd

Claims (1)

[Claims] 1) A key switch means for digitally inputting a recitation number, and a number judgment for determining whether the input number from the key switch means matches a registration number registered in advance. and upon receiving an output signal when the input recited number from the number determining means matches the registration number, outputs an operation permission command to a switch operation switch mechanism that selects forward/reverse drive of the switch. and an unlocking command means for setting the lock in an unlocked state, and the unlocking command means further includes: restricting the operation of the switch operation switch mechanism to within a certain time or within a predetermined number of times after outputting the operation permission command; A digital locking switch device for a switch, characterized in that an opening/closing operation restriction means is provided for returning to the locked state from this point on. 2) The utility model registration claim 1, wherein the opening/closing operation limiting means limits the number of operations of the switch operation switch mechanism to one within a predetermined number of times. Digital lock switch device for switchgear.