JPH0373918B2 - - 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 detects and notifies 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, in Japanese Patent Application Laid-Open No. Publication No. 55-114772). This garage door control device includes an illumination lamp that flashes in response to the garage door driving device to illuminate the inside of the garage when a motorist 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 various miscellaneous items. Therefore, sufficient consideration must be given to theft prevention. To prevent this theft,
It is generally known that intrusion detection devices of the magnetic reed switch type, light beam type, and radio wave type are commercially available for the purpose of detecting intruders into the garage. However,
If you purchase the ready-made device and install it in your garage, the following problems will occur.

(1) Since the intrusion detection device and the garage door control device are installed separately, two power systems are required, which can lead to malfunctions due to forgetting to turn on the power.

(2) It takes time to install a new intrusion detection device.

(3) Since the intrusion detection device and garage door control device are installed separately, there is no operational relationship between them.
In particular, the conditions for setting/resetting the intrusion detection device become unclear, making it difficult to expect preventable accidents or minimizing the effects of accidents.

As described above, a major problem is that the intrusion detection 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, problems caused by unclear conditions for setting/resetting the intrusion detection device will be explained below.

Generally, an intrusion detection device enters a detection operation state after a certain period of time has elapsed after being set. This state can be reset by operating a release switch or by automatically generating a reset signal after a particularly set time has elapsed. However, if the user enters the garage again due to something left behind immediately after setting up this device (1) and does not notice that a certain period of time has elapsed, the intrusion detection state will occur and an alarm will be issued, which is not desirable.

(2) In order to reset it, you have to go inside the garage, so it is impossible to distinguish between a case where there is an 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 sets a clock means when the garage door is in a closed state, and determines whether the condition inside the garage is changed due to human movement or the like within a predetermined time set by the clock means. When the state detection means detects that the device is in a fluctuating state, the timer is set again, and when the state detection means receives an input after a predetermined period of time, it is determined that an intruder has been detected. It is characterized by what it did.

By doing so, even if the movement or work of the person temporarily stops after the garage door is closed, the intrusion detection means remains in the detection state as long as the movement or work continues due to the delayed operation of the timing means. However, after a person leaves the garage and finishes moving or working inside the garage, the system enters the intrusion detection state after a predetermined period of time, and any detection of a person thereafter can be considered as an intruder.

The intrusion detection state is based on the condition that the garage door is in the closed state, and can be easily released by operating the garage door in the open state.

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 semitransparent cover 1A. 2 is 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 a chain that is paid out or wound up by a door opening/closing drive motor inside the rail 2; A trolley 4 is guided on the outside of the rail 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. Reference numeral 6 denotes a door arm, one end of which engages with the trolley 4, and the other end of which is connected to the upper end of the garage door 8 by a door bracket 7. The garage door 8 is guided by a door rail 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 in the main body 1, the door opening/closing drive motor, and the lighting lamp 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 further supplied with power from the power supply wiring for the existing lighting lamp 11 installed on the ceiling of the garage. It is configured to receive an opening/closing command from an opening/closing command operator 14 provided near the door 13 by operating a push button switch or by wirelessly operating from a remote controller. Upon receiving the door opening/closing command signal, the control circuit rotates the door opening/closing drive motor forward or reverse, moves the chain along the rail 2, moves the trolley 4, and moves the garage door 8 to the door rail 9.
Opening and closing movements along the
This is the same as the conventional garage door control device described in Publication No. 114772. Reference numeral 15 denotes a condition detector for detecting condition changes in the garage, and as shown in FIG. the wing nut 18 using the elongated hole 16B.
It is attached to the side surface of the main body 1 so as to be swingable in the X direction.

FIG. 3 is a block diagram of the control circuit, and the main control circuit 20 rotates the door opening/closing drive motor 21 in the normal direction (garage door opening operation) and reverse direction (garage door opening operation) according to the door opening/closing command signal from the door opening/closing operation command device 14. closing operation) and is controlled to a stopped state. Main control circuit 20
The illumination lamp control output signal E from the door changes in relation to the door opening/closing drive control, and is at a high level during opening or closing operation, and at a low level when stopped. This lighting lamp control output signal E is 3 input OR
A relay contact 25 is applied to the base of the transistor 24 via the circuit 22 and the resistor 23, and when at a high level turns on the transistor 24, energizes the relay 25, and connects the illumination lamp 26 to the power source.
Close A. 101 is a lower limit switch that detects the closed state of the door. When the door is in the closed state, the lower limit switch 101 is turned on and the main control circuit 20 is connected to ground GD. The output F of the main control circuit 20 represents the state of the lower limit switch 101, and is at a low level when it is on, and at a high level when it is off.

When the door is closed, the lower limit switch 101 is turned on, and the door is stopped, the signal F becomes low level.

At this timing, capacitor 27 and resistor 2
The negative pulse signal differentiated by 8, 29 is 2
The signal is input to the input NAND element 30, and its output is set to high level to trigger the monostable multivibrator 31. As a result, the output Q of the monostable multivibrator 31 is the resistor 31A and capacitor 31B.
The output Q remains at a high level for a set time, and this output Q continues to turn on the transistor 24 via the 3-input OR element 22 and the resistor 23, keeping the illumination lamp 26 lit. Reference numeral 32 denotes a state detection circuit for detecting state changes in the garage, which is the electric circuit of the state detector 15 described above. This state detection circuit 3
Although the details of 2 will be described later, this state detection circuit 32 detects that a person is moving or working in the garage and sets its detection output signal D to a high level. When this detection output signal D becomes a low level, it is differentiated by a capacitor 33 and resistors 34 and 35 and input to a two-input NAND element 30, and its output is set to a high level and triggers a monostable multivibrator 31, which outputs Let Q be a high level. Therefore, the transistor 24 is turned on and the lighting lamp 26 is turned on when the garage door is being driven to open and close, when the door is closed, or when the output of the state detection circuit 32 is input and the monostable multivibrator 31 is turned on. This occurs when the is operating.

Here, when the output Q of the monostable multivibrator 31 is at a low level, and when the signal F is at a low level, this means that the door is closed and a certain amount of time has passed since it stopped. . and monostable multivibrator 3
After the time set in 1, it means that there is no moving object, ie, no human being, in the garage.
This state is extracted by the 2-input NOR element 102, the output of the 2-input NOR element 102 is set to high level, and the D-type flip-flop 105 is set via the noise absorbing capacitor 104. The set places the device into an intrusion detection operating state. The Q output of the D type flip-flop 105 becomes high level and becomes the D input of the D type flip-flop 106.

Under this condition, when the state detection circuit 32 detects a state change and its output D becomes high level, the D type flip-flop 106 is set and the output Q
becomes high level, turns on the transistor 111 via the resistor 110, and causes the buzzer 100 to sound. Further, the Q output becomes a low level, is converted to a high level by passing through the inverter element 107, and is input to the three-input OR element 22. By doing this, the lamp 26 is turned on.

As described above, under the intrusion detection state, the output of the state detection circuit 32 causes the buzzer 100 to sound and the lamp 26 to light up to intimidate the intruder and notify the household members. This state continues until the reset switch 108 is pressed.

The intrusion detection operating state can be canceled by driving the door in the opening direction and turning off the lower limit switch 101, so that the signal F becomes high level and is transmitted to the D type flip-flop 1 via the inverter element 103.
This can be easily achieved by resetting 05.

FIG. 4 is a detailed diagram of the state detection circuit 32, and FIG. 5A
-D are the signal waveform diagrams. Ultrasonic transducer 32
A is energized by the output of the oscillation circuit 32B and vibrates,
Emit ultrasonic waves into the garage. The harmonic wave receiving element 32C receives the reflected wave, converts it into an electric signal, and amplifies it with an amplifier 32D to obtain a signal A. This signal A has a waveform in which a reflected wave signal is superimposed on a DC component, but the waveform in the M interval is abnormal compared to the steady waveform in the N interval. In this M section, the reflected wave is amplified and modulated due to a change in the ultrasonic reflection conditions, so by detecting this abnormal waveform, it can be known that a person is staying in the garage. . The DC component of signal A is connected to capacitor 3.
2E and further amplification by amplifier 32F, signal B is obtained. This signal B is detected by a diode 32GB, and resistors 32H and 32R are detected.
The signal C is obtained by passing it through a filter composed of a capacitor 32I and a reference voltage TH obtained from a resistor 32J, and the detection output signal D is obtained by comparing the magnitude of the signal C with a reference voltage TH obtained from a resistor 32J at a comparatively 32K. be.

Detection of state changes using such ultrasonic reflections is
One detector can only cover a limited area, so if the entire garage is to be monitored, a plurality of detectors may be provided. However, in many cases, it is sufficient to monitor the area near the inside of the auxiliary door 13.
Therefore, even one detector is often sufficient for practical use if its monitoring direction is adjustable.

According to this embodiment, if no human being is detected for a certain period of time after the door is closed, the intrusion detection operating state is automatically entered, and the operating state is automatically canceled when the door is opened. As a result, there is no restriction in handling related to conventional setting and resetting, and an efficient circuit system can be obtained as an intruder detection alarm in a garage.

Next, another embodiment will be described using FIG. 6.
FIG. 6 shows the following improvements over the embodiment of FIG. 3. That is, the Q output of the D-type flip-flop 106 is input to one terminal of the 2-input NOR element 121, and then the 2-input NOR element 121
The output of the oscillation circuit 120 is input to the other input terminal. With this configuration, when the D type flip-flop 106 is set, that is, when an intruder is detected, the two inputs NOR
The output of the element 121 is at the oscillation frequency of the oscillation circuit 120, and repeats high and low levels, 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 detection notification.
This provides an efficient circuit system for detecting and notifying intruders in the garage.

As another example, the two inputs in FIG.
It is conceivable to connect a resistor 110, a transistor 111, and a buzzer 100 to the output of the NOR element 121. With this configuration, when an intruder is detected, the flashing of the lamp 26 and the on-off sound of the buzzer 100 are repeated at the same cycle, so abnormal conditions can be more accurately indicated, and An efficient circuit system for intruder detection notification can be obtained.

Another embodiment will be described using FIG. 7. The present invention only needs to enter the intrusion detection operation state after confirming that no person is present for a certain period of time after the door is stopped. In this embodiment, the monostable multivibrator 31 is set using the signal E after the door is stopped.

According to this embodiment, if no person is detected for a certain period of time after the door is stopped, and the door is in the closed state, the intrusion detection operation state is automatically entered, and the operation state is automatically changed by opening the door. By releasing the intruder, there are no handling restrictions associated with conventional setting and resetting, and an efficient circuit system for intruder detection and notification within the garage can be obtained.

Further, the detector 15 described in the embodiments is not limited to ultrasonic waves, but can obtain similar effects even if it uses infrared rays, radio waves, or the like.

By the way, the state detection circuit 32 shown in FIG. 4 is configured to output the detection output signal D when the amplitude modulation of the reflected wave exceeds a predetermined value. However, the received energy of the receiving element 32C differs between when the state detector 15 is installed to detect state changes near the detector and when it is installed to detect state changes far from the detector. It's different. Therefore the state detector 15
The reference voltage TH given to relatively 32K must be adjusted according to the installation condition. FIG. 8 shows a modification of the comparator circuit that eliminates the need for such adjustment. Two input terminals of comparator 32K are connected to capacitor 32I (signal C) via resistors 32L and 32M, respectively. A small capacitor 32N is connected between the two input terminals, a small capacitor 32P is connected between the positive input terminal and the ground, and a large electrolytic capacitor 32Q is connected between the one input terminal and the ground. According to such a comparator circuit, when the signal C shown in FIG.
A voltage integrated by is applied. As mentioned above, if the capacitor 32Q is made larger to create a difference in the time constants of both input circuits, when the magnitude of the signal C changes as in the M section, the comparator 32K's 2
A potential difference is generated between the two input terminals, and a binary output signal D is obtained. If the comparison circuit responds to changes in the input signal C in this way, it becomes unnecessary to adjust the comparison reference voltage. On the other hand, if the input signal C changes slowly, it may not be possible to respond, but this can be adjusted by changing the time constants of the resistor 32M and capacitor 32Q.

As explained above, according to the present invention, if no person is detected for a certain period of time after the door is closed, the intrusion detection operating state is automatically entered, and this operating state is automatically canceled when the door is opened. It is possible to accurately detect, threaten, and notify intruders without the handling restrictions associated with conventional setting and resetting, and is an efficient circuit for intruder detection and notification in garages. system is obtained.

[Brief explanation of drawings]

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 showing the mounting structure of a state detector, and FIG. 3 is a control circuit diagram. , Fig. 4 is a state detection circuit diagram, Figs. 5 A to D are its operating signal waveform diagrams, and Fig. 6 is a state detection circuit diagram.
7 are diagrams showing a modification of the control circuit, and FIG. 8 is a diagram showing a modification of the comparison circuit. 2...Rail, 4...Trolley, 14...Door opening/closing command operator, 15...Status detector, 21...Door opening/closing driving motor, 26...Lighting lamp, 31...
Monostable multivibrator, 32... Status detection circuit, 100... Buzzer, 101... Lower limit switch, 102... 2-input NOR element, 103
. . . Inverter element, 105, 106 . . . D type flip-flop, 108 . . . Reset switch.

Claims (1)

[Scope of Claims] 1. A door opening/closing command means, a control circuit, a door opening/closing driving means, a connecting means for connecting the door opening/closing driving means to a garage door, and a notification means. In the garage door control device that controls the operation of the opening/closing drive means in response to a door opening/closing command signal from the means, the control circuit comprises:
comprising a timer and a state detection means for detecting a change in the state within the garage, and sets the timer when the garage door is in a closed state;
If the input to the state detection means is received within a predetermined time set in the time measurement means, the time measurement means is configured to be set again, and after the predetermined time set in the time measurement means has elapsed, the state detection means is reset. A garage door control device, characterized in that the notification means is controlled when an input is received from the garage door control device. 2. A door opening/closing command means, a control circuit, a door opening/closing driving means, a connecting means for connecting the door opening/closing driving means to a garage door, a notification means, and an illumination lamp, and the control circuit In a garage door control device that controls the operation of the door opening/closing drive means in response to a door opening/closing command signal from the door opening/closing command means, and controls blinking of the illumination lamp in connection with the operation control of the door opening/closing driving means. , the control circuit has a clock means and a state detection means for detecting a change in the state inside the garage, and sets the clock means when the garage door is in the closed state, and sets the clock means to the clock means. The clock means is configured to be set again if an input is received from the state detection means within a set predetermined time, and while the clock means is in operation, the illumination lamp is turned on and the clock means is set to A garage door control device characterized in that the notifying means is controlled when an input from the state detecting means is received after a predetermined period of time has elapsed. 3. The garage door control device according to claim 1, wherein the state detection means is provided to detect fluctuations in the vicinity of the inside of the auxiliary door of the garage. 4. The garage door control device according to claim 2, wherein the state detection means is provided to detect fluctuations in the vicinity of the inside of the auxiliary door of the garage. 5. The garage door control device according to claim 1, wherein the state detection means is attached so as to be swing-adjustable. 6. The garage door control device according to claim 2, wherein the state detection means is swingably mounted.