JPH0828162A - Control device of electric shutter - Google Patents

Abstract

PURPOSE:To clearly indicate exchange of a battery of an electronics used apparatus to an user by making opening and closing of a shutter differ from the normal time at the time of detecting lowering of battery voltage of a battery used apparatus. CONSTITUTION:An operation signal of an opening and closing operation part 5 as a battery used apparatus is sent to a receiving part 5a by wireless, and a built-in battery is its electric source. A battery voltage detection part 5b detects lowering of battery voltage of the opening and closing operation part 5. A battery used apparatus control part 13 outputs a control signal X of lowering of battery voltage to an electric motor control circuit 10 by receiving the lowering of battery voltage. The electric motor 2 is controlled to stop in specified time after the time of starting to open and close, and as a shutter stops at a position in the middle, an operator can grasp timing of battery exchange from this state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shutter control device for controlling the opening / closing of a shutter, and more particularly, to a decrease in the battery voltage used in a battery-using device such as an opening / closing remote controller by changing the opening / closing state of the shutter. The present invention relates to a control device for an electric shutter.

[0002]

2. Description of the Related Art An electric shutter may be provided with a battery-operated device operated by a battery at a position distant from the shutter device body. Examples of devices using batteries include a remote control for opening and closing a shutter, an obstacle detection device for detecting an obstacle caught when the shutter is opened and closed, and the like. All of these battery-powered devices are configured to transmit operation signals and detection signals to the shutter device body by electric wave transmission or photoelectric transmission, which saves wiring work and facilitates open / close operations and construction maintenance. It has become possible to use it, and it has been widely used in recent years.

When the battery voltage of the battery-powered device falls below a predetermined voltage in the control circuit of the electric shutter having the battery-powered device, the battery exhaustion is displayed or notified in synchronization with or asynchronously with the device control signal. It was.

[0004]

However, if the administrator of the device does not notice this display, it does not make sense, and when the battery is exhausted as it is, the predetermined function of the device using the battery cannot be exhibited. . In this case, when the device using the battery is a safety device such as the obstacle detection device, the expected safety function does not operate, which is a dangerous situation for people and things.

The present invention has been made to solve the above problems, and when a decrease in the battery voltage of a battery-using device is detected, the operation of the electric motor is made different from the normal operation, and the open / closed state of the shutter is regarded as an abnormal state. By doing so, it is an object of the present invention to provide a control circuit for an electric shutter that allows a user to clearly indicate a battery voltage drop of a battery-using device.

[0006]

In order to solve the above-mentioned problems, a control device for an electric shutter according to the present invention is a battery-operated device for detecting opening / closing of a shutter and an obstacle at the time of opening / closing, and the shutter. In a control device for an electric shutter having an electric motor control circuit 10 for controlling an electric motor 2 for opening and closing a battery, in claim 1, when a battery voltage of the device using the battery drops below a predetermined level, battery voltage detection When a decrease in battery voltage is detected by the units 5b and 7b and the battery voltage detection unit, when the operation of the electric motor of the electric shutter is detected, the operation of the electric motor is changed and the opening / closing state of the shutter is different from the normal state. Battery-powered device control unit 1 for visually confirming the battery usage limit
It is characterized by having 3 and 3.

Further, as described in claim 2, the battery-using device control section 13 determines whether the battery voltage detecting units 5b and 7b detect a decrease in the battery voltage of the battery-using device from a time when the motor starts opening / closing. It may be configured to stop at time t.

Further, according to a third aspect of the present invention, the battery-using device control unit 13 is configured so that the battery voltage detection units 5b and 7b.
When a drop in the battery voltage of the device using the battery is detected by the following, after stopping for a predetermined time t from the start of opening and closing by the electric motor,
It is also possible to adopt a configuration in which the system is automatically restarted at a predetermined time T.

According to a fourth aspect of the present invention, the electric motor control circuit 10 has a frequency conversion section 31 for variably controlling the frequency f of the power supply to the electric motor 2, and the battery using equipment control section 13 detects the battery voltage. When the battery voltage drop of the device using the battery is detected by the units 5c and 7c, the control signal F corresponding to the voltage of the battery is output to the frequency conversion unit to change the frequency of the power supply to the electric motor to change the shutter to the battery voltage. It may be configured to open and close at a corresponding speed.

According to a fifth aspect of the present invention, the battery-using device control section 13 is configured so that the battery voltage detecting sections 5b, 7b, 5c,
When the battery voltage drop of the device using the battery is detected by 7c, the notification means 19 such as a buzzer or a lamp may notify the outside.

[0011]

When the battery voltage of the battery-using devices 5, 7 drops below the reference voltage, this is detected by the battery voltage detecting units 5b, 7b, and the battery-using device control unit 13 starts a predetermined time from when the electric motor opens and closes the shutter. This shutter is stopped and controlled at t. The operator can recognize that the battery voltage of the battery-using devices 5, 7 has dropped due to the abnormal opening / closing of the shutter.

[0012]

1 is a block diagram showing a control circuit for an electric shutter according to the present invention. In the electric shutter 1 installed at the entrance of a garage or warehouse, the slat 3 is opened and closed by driving the electric motor 2. At the lower end of the slat 3, a draining plate 4
Is provided, and an obstacle D is provided on the drain board 4 in the opening / closing direction.
If there is an obstacle, the obstacle detection unit 5 that detects the obstacle D by contact is provided.

The opening / closing of the electric shutter 1 is operated by an opening / closing operation section 7 installed on a wall near the shutter or in the vehicle. The obstacle detection unit 5 and the opening / closing operation unit 7 are
Both of them wirelessly transmit a detection signal and an open / close signal by radio wave transmission, photoelectric transmission, or the like, and are battery-using devices that use a built-in battery as a driving power source. Further, the electric shutter 1 side is provided with receiving units 5a and 7a for receiving the transmissions of the obstacle detection unit 5 and the opening / closing operation unit 7 as the battery-using device.

Battery voltage detection units 5b and 7b are provided in the transmission-side obstacle detection unit 5 and the opening / closing operation unit 7, which are battery-using devices, respectively. This battery voltage detector 5
b and 7b, when the battery voltage of the device using the battery is higher than a predetermined reference voltage, the bit indicating the battery voltage is set to a good state (for example, "0"). If it is decreasing, the bit of the battery voltage is decreased (for example, "
1 "). The bit indicating the battery voltage is included in a predetermined bit string forming the transmission signal. Here, the reference voltage to be compared is sufficient for the device using the battery to transmit radio waves, light, etc. The reference voltage is set to a voltage level slightly higher than a limit value that will hinder transmission when the voltage drops below the reference voltage.

The opening / closing of the electric motor 2 is controlled by the electric motor control circuit 10. A commercial power source or the like is used as a power source for the electric motor control circuit 10, and a battery-powered device control section 13 is provided on the power source line 11.

The battery-using device control unit 13 is composed of a battery voltage determination circuit 15, a motor operating current detection circuit 16, and a voltage drop control unit 17. This battery-powered device control unit 13
Received signals from the receivers 5a and 7a are input to the.
Specifically, each signal of the opening / closing operation and the stop operation by the opening / closing operation unit 7 is input, and the detection signal of the obstacle D by the obstacle detection unit 5 is input. Then, a control signal M corresponding to each operation of opening / closing is output to the electric motor control circuit 10 to stop opening / closing of the slat 3, and when a detection signal of the obstacle D is input from the obstacle detecting unit 5, the control signal M is stopped. Is output to the electric motor control circuit 10 to stop the slat 3 midway.

The normal open / close stop control is performed in a path from the battery voltage determination circuit 15 to the voltage drop control unit 17 to the electric motor control circuit 10 in the block diagram. Further, even if the opening / closing operation unit 7 is not operated, when a timer is provided, the shutter may be automatically opened / closed at a certain time.

A battery voltage discriminating circuit 15 is provided in the battery-using device control section 13, and the battery voltage discriminating circuit 1 is provided.
Reference numeral 5 is an obstacle detection unit 5 that is a device using a battery when received by the reception units 5a and 7a, and a battery voltage detection unit 5 of the opening / closing operation unit 7.
The bit indicating the battery voltage in the transmission signal transmitted from b and 7b is determined.

The electric motor operating current detection circuit 16 detects the operation time of the electric motor 2 by detecting the power supply current to the electric motor control circuit 10, and the electric current detection signal K is output to the battery-using device control unit 13. .

In the above structure, the opening / closing operation section 7 is normally operated.
The opening / closing operation is received by the receiving unit 7a, and the battery-using device control unit 13 sends an opening / closing control signal M to the electric motor control circuit 10.
Is output to operate the electric motor 2 to open and close the slat 3.
If the obstacle D is detected by the obstacle detector 5 during opening and closing, the battery-using device controller 13 is received by the receiver 5a.
Outputs a control signal S for suspension due to an obstacle to suspend the opening and closing of the slat 3.

Next, a case will be described in which the battery voltage of the obstacle detection unit 5 and the opening / closing operation unit 7, which are battery-using devices, decreases. FIG. 2 is a timing chart showing the operation of each component when the battery voltage is detected. Here, as an example, a case where the battery voltage of the obstacle detection unit 5 as a battery-using device is lowered will be described. When the battery of the obstacle detection unit 5 drops, the battery voltage detection unit 5b puts a battery signal indicating that the battery voltage has dropped on the transmission signal of the transmission side, and bit detection is performed by the battery voltage determination circuit 15, and the battery voltage determination circuit 15 The voltage drop signal L is output to the battery-using device controller 13.

When the voltage drop control section 17 receives the voltage drop signal L, the electric motor 2 is operated after a predetermined time has passed since the motor operating current detection circuit 16 detected the current, that is, by the opening / closing operation of the opening / closing operation section 7. Then, at a predetermined time t after the slat 3 starts to open and close, the control signal X for stopping due to the voltage drop is output to the electric motor control circuit 10. As a result, the slat 3 stops in the middle of opening and closing, so that the operator can check the obstacle detection unit 5 according to a predetermined procedure that defines this midway stop.
It is possible to clearly know that the battery voltage of has decreased.

That is, the stop of the slat 3 in the middle of opening and closing,
The obstacle D may be detected by the obstacle detection unit 5, but the operator can easily understand that the battery voltage on the obstacle detection unit 5 side is low if the operator can confirm that the obstacle D is not present. become. Further, even when the battery voltage of the opening / closing operation unit 7 drops, the slat 3 stops during opening / closing,
The user can be prompted to replace the battery of the opening / closing operation section 7.

When both the obstacle detection unit 5 and the opening / closing operation unit 7 are used as the battery-using device, the stop position after opening / closing is set high as a method of determining which battery voltage is decreasing. It is also possible to make the difference in the vertical direction. In this case, the battery voltage determination circuit 15
Is configured to separately detect the voltage drop signal L to be output corresponding to each of the obstacle detection unit 5 and the opening / closing operation unit 7, and output the voltage drop signals L and L'corresponding to each of them. The stop control signal X output by the unit 17 is a predetermined time t from the time when the electric current detection signal K is output by the motor operating current detection circuit 16 and the slat 3 starts to open and close until a predetermined time elapses for each battery-using device. It may be set as different values t and t '.

After the shutter is temporarily stopped due to the battery voltage drop, the temporary stop control signal X is released after a predetermined time T. Therefore, after this period has elapsed, the shutter can be opened / closed again by the opening / closing operation of the opening / closing operation unit 7. By this restart,
It is desirable to replace the battery, but without replacing it, the shutter can be re-driven to the fully open or fully closed position depending on the remaining battery amount, and the operator is allowed to replace the battery later. be able to. in this case,
It can be configured to be reset so that the voltage of the battery-powered device is detected every time the device is restarted. still,
This re-driving can also be opened / closed by an opening / closing operation unit (not shown) wired directly from the motor control circuit 10.

As a modified example of the above embodiment, after the predetermined time T has elapsed, the opening / closing control is automatically performed again in the opening / closing direction until then, and the battery can be replaced later. In this case, it is dangerous and unfavorable to control the opening / closing in the direction opposite to the previous opening / closing direction.

Further, in the above configuration, the voltage drop control section 17 may be configured to output a warning signal to the notification means 19 at the same time as outputting the control signal X for stopping due to the voltage drop. As a result, the notification means 19 can notify the operator that the battery voltage of the battery-using device has dropped due to a buzzer, a lamp, voice synthesis, or the like, and the operator can reliably confirm that the battery is dead. Incidentally, this notification means 1
9 may be configured to be displayed by a general-purpose signal provided near the opening / closing operation unit 7 or in a warehouse or a garage, or may be provided in a management room that centrally manages an entrance / exit.

Next, FIG. 3 is a block diagram showing a second embodiment of the electric shutter control device of the present invention. In this embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the electric motor control circuit 10 is configured to change the opening / closing speed of the electric motor 2 composed of an induction motor or the like by frequency conversion. Also,
The battery voltage detection units 5c and 7c provided in the obstacle detection unit 5 and the opening / closing operation unit 7, which are devices using a battery, add several battery voltage bits to a predetermined bit string forming a transmission signal. Here, in the battery voltage bit, when the battery voltage of the device using the battery is higher than the reference voltage similar to the above, the bit indicating the battery voltage is set to a good state (for example, “000”).
If the voltage has dropped, the bit corresponding to the battery voltage is output as a lowered state (for example, "001" to "111").

Then, the battery voltage determination circuit 25 detects several bits for battery voltage included in the transmission signals from the open / close operation unit 7 and the obstacle detection unit 5, which are devices using batteries. If the battery voltage is a bit string indicating that the battery voltage has dropped below the predetermined reference voltage, the detection voltage signal G corresponding to the battery voltage value is output. The voltage drop control unit 27 outputs the control signal M for opening and closing and the control signal S for temporary stop, and when the detection voltage signal G is input, the control signal F having a frequency corresponding to the detection voltage signal G is output. Is output.

Further, the electric motor control circuit 10 is provided with a frequency conversion section 31 interposed in the power supply line 11, and the electric motor 2 has a frequency f output from the frequency conversion section 31.
Is driven at a rotation speed according to. Further, a switching unit 32 that controls the frequency of the frequency conversion unit 31 according to the control signals M, S, and F output from the voltage reduction control unit 27 is provided.

The switching section 32 receives the control signal M when
The frequency conversion unit 31 is caused to output a constant frequency f to drive the electric motor 2 at a predetermined normal constant speed.
When the control signal S is input, the frequency converter 31 is stopped from outputting the frequency f and the electric motor 2 is stopped. When the control signal F is input, the electric motor 2 is driven by the frequency f ′ according to the control signal F.

When the battery voltage of the device using the battery is lower than the reference voltage, the driving frequency f'for the electric motor 2 is set to a value corresponding to the value of the battery voltage of the device using the battery, and the shutter is opened and closed. The speed decreases. Therefore, the operator can understand that the battery voltage of the battery-using devices 5, 7 has dropped by simply looking at the opening / closing speed of the electric shutter 1, and can confirm the necessity of battery replacement. In this case, the user can also know the voltage state of the battery. In the second embodiment as well, the notification means 19 similar to the above can be provided.

According to each of the above embodiments, the battery-powered equipment 5,
When the battery voltage of 7 drops, it will not return to normal operation unless the battery is replaced, so in addition to the indication to the administrator of the device, the user can clearly use it and continue to use it with the battery dead Can be prevented.

Further, in each of the above embodiments, the battery voltage detectors 5b, 7b, 5 provided in the battery-using device on the transmitting side.
c, 7c detects the battery voltage and transmits the corresponding bit together with the transmission signal, and the battery voltage determination circuit 15, 25 on the receiving side
However, as another example, the battery voltage detecting unit is provided on the receiving unit side such as the receiving units 5a and 7a.
A configuration may be adopted in which the battery voltage is detected on the basis of the intensity level of radio waves, light, etc. received on the receiving side, and the battery voltage on the transmitting side is determined by the battery voltage determination circuits 15 and 25. The effect can be obtained.

[0035]

According to the present invention, when the battery voltage of a battery-using device is lowered, the battery-voltage detecting unit detects the battery voltage and causes the battery-using device control unit to open and close the shutter differently from the normal state to the user. Since the configuration specifically encourages battery replacement, forgetting to replace the battery can be prevented, and the battery-using device can be continued with stable and reliable operation. Further, as described in claim 2, the battery-using device control unit is also configured to perform stop control at a predetermined time after opening and closing of the shutter when the battery voltage is low, or to be configured to restart after stopping as in claim 3. Can be surely notified to the battery replacement time.

Further, as described in claim 4, when the battery voltage lowers, the battery-powered device control unit can drive the electric motor at a frequency corresponding to the battery voltage via the frequency conversion unit, thereby coping with the battery voltage drop. As a result, the opening / closing speed of the shutter decreases, so that the user can be notified of battery replacement, and in this case, the user can also know the voltage state of the battery. Further, if the notification means is used to notify the outside of the battery replacement time as described in claim 5, the user and the administrator can be more surely notified of the battery replacement time.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control device for an electric shutter of the present invention.

FIG. 2 is a timing chart showing the operation of the device.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

[Explanation of symbols]

1 ... Electric shutter, 2 ... Electric motor, 5 ... Obstacle detector,
7 ... Open / close operation unit, 5a, 7a ... Receiving unit, 5b, 7b, 5
c, 7c ... Battery voltage detection unit, 10 ... motor control circuit, 1
DESCRIPTION OF SYMBOLS 1 ... Power supply line, 13 ... Battery-using device control part, 16 ... Electric motor operating current detection circuit, 15, 25 ... Battery voltage discrimination circuit, 17, 27 ... Voltage drop control part, 31 ... Frequency conversion part, 32 ... Switching part.

Claims (5)

[Claims] 1. A battery-powered device (5, 7) for detecting opening and closing of a shutter and an obstacle at the time of opening and closing, and an electric motor control circuit (10) for controlling an electric motor (2) for opening and closing the shutter. In a control device for an electric shutter, a battery voltage detection unit (5b, 7b) that detects when the battery voltage of the device using the battery drops below a predetermined level.
When the battery voltage detection unit detects a decrease in the battery voltage, the operation of the electric motor of the electric shutter is changed when the operation of the electric motor of the electric shutter is detected, and the open / close state of the shutter is changed from the normal state to use the battery. An electric shutter control device, comprising: a battery-powered device control unit (13) for visually confirming a limit. 2. The battery-powered device control unit (13), when the battery voltage detection unit (5b, 7b) detects a decrease in the battery voltage of the battery-powered device, a predetermined time (t) from the time when the motor starts opening and closing. The control device for the electric shutter according to claim 1, which is stopped at. 3. The battery using device control unit (13), when the battery voltage detecting unit (5b, 7b) detects a decrease in the battery voltage of the battery using device, a predetermined time (t) from the start of opening and closing by the electric motor. After stopping at the specified time (T)
The electric shutter control device according to claim 1, wherein the electric shutter control device is automatically restarted at. 4. The electric motor control circuit (10) has a frequency conversion unit (31) for variably controlling a frequency (f) of a power supply to the electric motor (2), and the battery-using device control unit (13). Outputs a control signal (F) corresponding to the voltage of the battery to the frequency conversion unit when the battery voltage detection unit (5c, 7c) detects a decrease in the battery voltage of the device using the battery, and the frequency of the power supply to the electric motor. The control circuit for the electric shutter according to claim 1, wherein the shutter is opened and closed at a speed corresponding to the battery voltage by changing the voltage. 5. The battery-using device control unit (13) is configured to notify a device such as a buzzer or a lamp when the battery voltage detecting unit (5b, 7b, 5c, 7c) detects a decrease in battery voltage of the battery-using device. The electric shutter control device according to claim 1 or 4, wherein the notification is given to the outside by (19).