JPH034715B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a garage door control device, and more particularly to a garage door control device that accurately detects an intruder into a garage.

In garages equipped with a main door (garage door) through which cars enter and exit, and an auxiliary door through which people enter and exit when the main door is closed, a garage door control device has been proposed (for example, a special Publication No. 114772)
has been done.

This garage door control device includes an illumination lamp that flashes in response to drive control of the garage door to illuminate the inside of the garage when a car enters or exits at night or when the garage door is closed.

In general, a garage is often used not only as a garage but also as a storeroom for storing a variety of miscellaneous items. Therefore, regarding theft prevention,
sufficient consideration must be given.

To prevent theft, it is generally known that, for example, magnetic reed switch types, light beam types, and radio wave types are commercially available for the purpose of detecting intruders into the garage. However, when the ready-made device is purchased and installed in a garage, the following problems occur.

1. Since the theft prevention device and the garage door control device are installed separately, two power sources are required, and malfunctions may occur due to forgetting to turn on the power.

2. It takes time to install a new theft prevention device.

3. Since the theft prevention device and the garage door control device are installed separately, there is no operational relationship between them, and in particular, the conditions for setting/resetting the theft prevention device are unclear, which reduces the impact of preventable accidents. It is not possible to expect the effect of minimizing the

As described above, a major problem is that the theft prevention device, that is, the abnormal state detection means, and the garage door control device are installed separately and have no relation to each other.
Among these, a particular problem is that the conditions for setting/resetting the theft prevention device are unclear.
This will be explained next.

Generally, a theft prevention device enters the theft prevention state after a certain period of time after being set. This state can be reset by operating a release switch or automatically after the time set at the time of setting has elapsed.

1. Immediately after setting the vehicle, if the vehicle enters the garage again due to something left behind and does not notice that a certain period of time has elapsed, the vehicle will enter a theft prevention state, which is undesirable as it will trigger an alarm.

2. In order to reset it, you have to go inside the garage, and you cannot distinguish it from the intruder.

An object of the present invention is to provide a good garage door control device that can achieve accurate detection of an intruder by comprehensively controlling the operation of the garage door and the output of the garage interior state detection means.

In order to achieve this object, the present invention uses a state detection means to confirm that the garage door is closed and that the state inside the garage is constant, and from the time both conditions are satisfied, the timer is triggered, If the state detection means detects a change in the condition in the garage within a predetermined time set by the time measurement means, the time measurement means is returned to the initial state, and the condition detection means returns the garage after the predetermined time has elapsed. If a change in the internal state is detected, it is determined that an intruder has been detected.

By doing so, after the garage door is closed, it is possible to automatically transition to the theft prevention state (the state after a predetermined period of time has elapsed by the time measuring means). If you are working in a garage, remove the detection conditions of the condition detection means in advance (for example, leave a window open), or stop the garage door without completely closing it. Just leave it there.

Furthermore, the condition for the theft prevention state is that the garage door is in a closed state,
By operating the garage door in the open position,
Can be easily released.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 is a perspective view of a garage door control device according to the present invention installed in an existing garage.
Reference numeral 1 denotes a main body of a garage door control device, which houses a control circuit, an opening/closing driving motor, a buzzer 100 as a notification means, and a lighting lamp. Note that the illumination lamp is provided inside the transparent or translucent cover 1A. Reference numeral 2 denotes a rail protruding from the main body 1, the tip of which is fixed to a part of the garage by a header bracket 3, and guides the chain that is paid out or wound up by the opening/closing drive motor inside the rail 2. The trolley 4 is guided on the outside of the trolley 2. The trolley 4 can be freely engaged with or disengaged from the tip of the chain by means of an engagement pin 5, and normally the trolley 4 and the chain move together along the rail 2. A door arm 6 has one end engaged with the trolley 4 and the other end connected to the upper end of the garage door 8 by a door bracket 7. The garage door 8 is guided by a door frame 9 to open and close, and is weight-balanced by a balance spring 10 so that it can be opened and closed by hand. The control circuit, opening/closing drive motor, and lighting lamp in the main body 1 receive power via a power cable 12 from the power wiring for the existing lighting lamp 11 installed on the ceiling of the garage, and the control circuit is also connected to the auxiliary door. Opening/closing command operating device 14 provided near 13
It is configured to receive opening/closing commands by push-button switch operation or by wireless operation from a remote control device. The control circuit receives the opening/closing command signal and rotates the opening/closing driving motor in the forward or reverse direction, moves the chain along the rail 2 to move the trolley 4, and opens/closes the garage door 8 along the door rail 9. This is the same as the conventional garage door control device described in Japanese Patent Application Laid-Open No. 114772/1983. 15A and 15B are state detectors for detecting changes in the state of the garage wall surface, and operate as follows.

As shown in FIG. 1, the objects to be detected are an auxiliary door 13 and a window 500. Recursive reflectors 501 and 502 are set for the object to be detected.
This retroreflector is tape-shaped,
The plain surface of the tape is constructed by coating bead-like particles, and has the effect of reflecting reflected light at the same angle as the incident light. Similar products commonly available on the market include reflective bands for road signs.

A light emitter/receiver is provided for each of the above-mentioned recurrent reflectors. The optical axes of the state detectors 15A and 15B are aligned. This optical axis alignment work is performed using the support member 19.
The elongated hole provided around the wing nut 18A, 1
8B, the support member 16 is swingable in the X direction.
Y by A, 16B and butterfly nuts 17A, 17B
It is attached so that it can swing in the direction.

If there is an optical axis, the object to be detected can receive reflected light as long as it is in a normal position, and if the object to be detected cannot receive reflected light, it can be assumed that the object to be detected has moved.

FIG. 3 is a block diagram of the control circuit. The main control circuit 20 rotates the opening/closing drive motor 21 in the normal direction (garage door opening operation) and reverse direction (garage door closing operation) according to the opening/closing command signal from the opening/closing operation command device 14. motion),
Control to stop state.

The illumination lamp control output signal E from the main control circuit 20 changes in relation to the opening/closing drive control, and remains at a high level for a certain period of time during the opening or closing operation and after stopping. This lighting lamp control output signal E is
The 4-input OR element 22 and the base of the transistor 24 are applied via the resistor 23, and when the level is high, the transistor 24 is turned on and the relay 25 is turned on.
energizes and closes the relay contact 25A for keeping the illumination lamp 26 powered.

In the figure, 27 is a lower limit switch that detects the closed state of the garage door. When the garage is in the closed state, the lower limit switch 2
7 is turned on and connected to the main control circuit 20.

The output F of the main control circuit 20 represents the state of the lower limit switch 27, and when it is on,
Low level, when off, corresponds to high level.

During the closing operation of the garage door, the lower limit switch 27 is turned on, and the output F
becomes a low level, resulting in a stopped state.

Next, the present invention will be explained. 101,
102 indicates a detection circuit corresponding to the state detectors 15A, 15B, 104, 105 are monostable multivibrators, 103, 110, 111 are inverter elements, 107 is a two-input AND element, 11
5 is a 2-input OR element, 106 is a 3-input AND element, 108 and 109 are D-type flip-flops, 112 is a resistor, 113 is a transistor, 1
18 is a reset switch 120 is a capacitor, 121 is a resistor, 122 is a capacitor,
The filters 121 and 122 constitute a filter.
When the lower limit switch 27 is turned on, the output F
becomes a low level, and outputs a high level through the inverter element 103 to the 3-input AND element 106.
is input to the monostable multivibrator 104.

Further, the outputs of the detection circuits 101 and 102 corresponding to the state detectors 15A and 15B become high level when reflected light can be detected. These outputs are input to a 3-input AND element 106.

That is, the output of the 3-input AND element 106 is
High level when the object to be detected is in the normal position and the garage door is fully closed. By this signal, monostable multivibrator 1
Trigger 05, resistor 105A, capacitor 10
The output Q is set to high level and the output is set to low level for the time determined by 5B. The output Q is input to a 4-input OR element and lights up the illumination lamp 26. Further, the output is input to a two-input AND element 107. The output of the two-input AND element 107 is
During the time set in the monostable multivibrator, the output of the three-input AND element 106 is at a high level, indicating that the state does not change.
At this output, a D type flip-flop 108 is set. Here, a capacitor 120 is inserted into the output of the 2-input AND element 107, and the 2-input AND
Pulse noise due to timing delay on the input side of element 107 is absorbed.

In this state, the output Q of the D-type flip-flop 108 becomes high level and the 2-input OR element 12
3 to a D-type flip-flop 109.

The above state is the theft prevention state. Under this condition, if the output of the state detection circuit 102 becomes low level, that is, when the object to be detected changes, it becomes high level via the inverter element 111, and the D type flip-flop 109 is set. As a result, the output of the D-type flip-flop becomes a low level, which is input to the four-input OR element 22 via the inverter 110, thereby lighting up the illumination lamp 26. At the same time, the output Q becomes high level, drives the transistor 113 through the resistor 112, and sounds the buzzer 100, thereby threatening the intruder and notifying the household members.

In this state, the D type flip-flop 109
After inputting the output Q to the two-input OR element 115, the D input is held at a high level, so that it does not respond to changes in the state detection circuit 102.

To cancel the notification state, it is sufficient to turn on the reset switch 118.

Furthermore, in order to cancel the theft prevention state, the R terminal of the D type flip-flop may be set to a low level, and this is achieved when any of the three inputs of the 3-input AND element 106 becomes low level. .

However, a resistor 121 and a capacitor 122 are inserted into the R terminal of the D-type flip-flop 108, so that even if the output of the three-input AND element 106 changes, it is inputted with a delay. this is,
With this delay time, if there is a change in the state detection circuit 102, the purpose is to secure the setting time to the D type flip-flop 109.

Furthermore, when the state detection circuit 101 changes, it triggers the monostable multivibrator 104, resistor 104B, capacitor 1
The output Q becomes high level for the time determined by 04A, and the lighting lamp 2 is output through the 4-input OR element.
Turn on 6. The monostable multivibrator 10
4 operates only when the garage door is in the closed state. This is achieved by sustaining the output of the inverter 103 to the other input terminal of the monostable multivibrator, so that a high level is supplied only when the garage door is closed. As a result, when the auxiliary door is opened, the theft prevention state is automatically canceled and the illumination lamp 26 is turned on. In particular, lighting of the illumination lamp is effective at night. FIG. 4 shows an example of a state detection circuit, which will be described below.

Reference numeral 131 indicates an oscillation circuit, which supplies a 40KHz oscillation waveform to the light emitting diode 132. The emitted light is reflected by the recurrent reflector 501 or 502, and the amount of reflected light is received by a phototransistor.
The amount of light received is amplified by the amplifier circuit 134 and further
Unnecessary noise components are removed through a 40KHz bandpass filter circuit 135. The output of the circuit is detected by a diode 136, and resistors 137,1
39, the signal is inputted to the + terminal of the comparator circuit 141 via a filter composed of a capacitor 138. A value set by the variable resistor 140 is input to the minus terminal of the comparator circuit 141, and if the input value to the plus terminal is greater than the value, the output becomes high level. In other words, the normal position was confirmed.

In particular, a capacitor 142 is inserted in the output stage to absorb pulse-like noise.

Although not shown in the figure, in order to improve light emission and light reception efficiency, a light emitting diode 132 and
A lens is placed in front of the phototransistor 133.

According to this embodiment, by installing the detection means in the main body, it is possible to eliminate the installation work such as wiring, and furthermore, if the door closed state and the input of the state detection means are normal, By automatically entering the theft prevention state and canceling the theft prevention state when the door is opened or a specific state detection means changes, there are no handling restrictions related to conventional setting and resetting, and the device can be used inside the garage. An efficient theft prevention system has been achieved and is highly effective.

Another embodiment will be explained using FIG. 5. FIG. 5 has the following improvements compared to FIG. 3. In other words, D type flip-flop 109
The output of is input to one terminal of the two-input OR element 144. Furthermore, the two-input NOR element 144
The output of the oscillation circuit 143 is input to the other input terminal of the oscillation circuit 143 . With this configuration, when the D-type flip-flop 109 is set, that is, when an intruder is detected, the two inputs are
The output of the NOR element repeats high level and low level at the oscillation frequency of the oscillation circuit 143, so that the lamp 26 can be blinked at the same period.

According to this embodiment, in addition to the buzzer notification, the flashing lamp indicates the intruder notification, so an efficient system for preventing theft in the garage is achieved and is highly effective.

As another example, in FIG.
A circuit is proposed in which a resistor 112, a transistor 113, and a buzzer 100 are connected to the output of the NOR element 144.

With this configuration, when an intruder is detected, the lighting lamp 26 blinks and the buzzer 100 rings on and off at the same frequency, making it possible to more accurately display abnormal conditions and prevent theft in the garage. For prevention, an efficient system has been achieved and is highly effective.

According to the present invention, the conventional theft prevention condition is achieved.
There are no handling restrictions related to setting and resetting, and in particular, by engaging with the condition of the garage door and the condition detector, it is possible to accurately detect intruders and issue a threat alarm, thereby preventing theft in the garage. An efficient system for prevention has been achieved and is highly effective.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a garage equipped with a garage door control device, FIG. 2 is a perspective view of a state detector mounting structure, and FIG. 3 is a control circuit. 4 is a state detection circuit diagram, and FIG. 5 is a diagram showing a modification of the control circuit. 1...Main body, 14...Opening/closing command operator, 15...
...Status detector, 26...Illumination lamp, 27...Lower limit switch, 101...Status detection circuit,
102... State detection circuit, 105... Monostable multivibrator, 108... D type flip-flop, 109... D type flip-flop,
501... Recurring reflector, 502... Recurring reflector.

Claims (1)

[Scope of Claims] 1. A door opening/closing command means, an opening/closing driving means, a connecting means for connecting the opening/closing driving means and a garage door, a notification means, and a control circuit for controlling these, The circuit is a garage door control device that controls the operation of the opening/closing drive means and the notification means in response to a door opening/closing command signal from the door opening/closing command means, and includes a state detection means for extracting a change in a state inside the garage. The control circuit is provided with a timer, and when the door is in a closed state and there is an output from the state detection means, the control circuit sets the timer in that state and sets the timer to a predetermined value set in the timer. If the output of the previous state detection means changes within the time, the time measurement means is reset;
A garage door control device characterized in that after a predetermined period of time set in the timer has elapsed, the vehicle enters a theft prevention state, and if the state detection means changes in this state, the notification means is operated. 2. In claim 1, the state detection means includes a return reflecting member arranged on the object to be detected, and a light emitting/receiving means installed on the opening/closing driving means side projecting light onto the return reflecting member. A garage door control device, characterized in that it detects changes in the state inside the door based on the difference between the amount of light projected and the amount of reflected light. 3. According to claim 1, at least two of the state detection means are arranged in a garage, and input from a specific state detection means resets the theft prevention state under the theft prevention state. A garage door control device featuring: 4. The garage door control device according to claim 3, characterized in that when the notification means is operating under the theft prevention state, input from the specific state detection means is ignored. 5. In claim 3, the garage door control device includes lighting means that turns on in response to opening and closing of the door, and the lighting means further turns on when there is an input from the specific state detection means. A garage door control device characterized by: