JP4823679B2 - Control device and control method for electric shutter for building - Google Patents

Description

The present invention belongs to a technical field of a control device and a control method for an electric shutter for building disposed in an opening of a building such as a garage or a store.

  Generally, in this type of building shutter, there is a shutter curtain arranged so as to open and close an opening by opening and closing an electric switch. In the process, when the shutter curtain comes into contact with a person or an obstacle, it is required to make an emergency stop. Therefore, an abnormality detection means is provided in the controller that controls the opening and closing of the switch, and the shutter curtain closing operation is urgently stopped by detecting an abnormality when the shutter curtain closes against an obstacle during the shutter curtain closing operation. It is configured to do.

As such an abnormality detection means, a seat plate switch is provided on the seat plate at the lower end of the shutter curtain, and the switch is switched to the obstacle plate. There has been proposed a configuration in which a monitoring device for monitoring the driving state of the switch is provided, and detecting an overload acting on the switch by the monitoring device is an obstacle detection (Patent Document 1).
JP 2001-152767 A

  By the way, a shutter curtain may be provided exposed to the outside, such as provided in an opening of a garage. In this case, it is assumed that wind pressure acts on the shutter curtain. In such a case, the switch of the seat plate is switched by the wind pressure, or the shutter curtain is strongly pressed against the guide rail, so that it is difficult to descend and the switch is overloaded. In either case, the control unit detects an abnormality. It becomes a state. However, the conventional control unit cannot distinguish whether the abnormality detection state is caused by the wind pressure or the contact between the shutter curtain and the obstacle, and immediately when an abnormality is detected. The shutter curtain will be stopped in an emergency. For this reason, for example, when the operator operates the closing operation switch to close the shutter curtain and leaves the shutter curtain before confirming that the shutter curtain is fully closed, the wind pressure as described above is generated. If this happens, the shutter curtain will remain open at a position in the middle of closing, and in this case, there is a problem that smooth shutter operation may be impaired, and the problem to be solved by the present invention is here. is there.

SUMMARY OF THE INVENTION The present invention was created in view of the above-described circumstances in order to solve these problems. The invention of claim 1 is a control of an opening / closing device that controls opening / closing of a shutter curtain disposed in an opening. An abnormality detection means for detecting an abnormality of the shutter curtain operation, a position detection means for detecting the opening position of the shutter curtain in the abnormality detection as an abnormality detection position, and determining whether the abnormality detection is due to an obstacle to configure and an obstacle determining unit, the obstacle determining unit, with the abnormality detection, as well as detecting an abnormality detection position, the abnormality detection control by emergency stop the shutter curtain to open operation for a predetermined time Then re closed, due to the re abnormality detection in the course of the re-closure operation is performed, along with detecting the abnormality detection position, the current abnormality detection position When an abnormality detection position and the position of the times, it is determined that the abnormality detection by the obstacle, the abnormal stop control that does not the re-closure after the stop, when the abnormality detecting position of this time is different from the abnormality detection position of the first it is determined to be a first-time abnormality detection of the abnormal detection, a control device in building electric shutters, characterized by being configured to so that is reclosed Following abnormality detection control.
According to a second aspect of the invention, the abnormality stop control, for building of claim 1, characterized by being configured so as to continue the stop state after urgently stopped the shutter curtain is opened operated for a predetermined time It is a control apparatus in an electric shutter.
According to a third aspect of the present invention, the abnormality detection means is configured to detect an overload acting on the shutter curtain based on the driving state of the switch. It is a control apparatus in the electric shutter for buildings as described in an item.
According to a fourth aspect of the present invention, the abnormality detection means divides the opening / closing range of the shutter curtain into a plurality of preset operation sections, detects a current load value in each operation section, and detects the current load value and the operation section. 4. The apparatus according to claim 3, wherein when the change value with respect to the previous load value, which is a load value at the time of the previous drive in the above, exceeds a preset reference change value, it is determined that an abnormality has been detected. It is a control apparatus in the electrically-driven shutter for buildings as described in.
According to a fifth aspect of the present invention, there is provided an opening / closing control unit for controlling opening / closing of the shutter curtain disposed in the opening, an abnormality detecting means for detecting an abnormality of the shutter curtain operation, and an abnormal detection of the opening position of the shutter curtain in the abnormality detection. A position detection means for detecting the position and an obstacle determination means for determining whether the abnormality detection is due to an obstacle. In the process of closing, the abnormality detection position is detected by receiving the abnormality detection. In addition, the shutter curtain is closed and stopped, and the shutter curtain is reclosed following the abnormality detection control that is opened for a predetermined time, and the abnormality is again detected in the process of the reclosing operation . thereby detecting an abnormality detection position and when the abnormality detecting position of this time is abnormal detection position and the position of the first is the abnormality detection by the obstacle determine And, the abnormality stop control that does not re-closed after the stop, it is determined that when the abnormality detecting position of this time is different from the abnormality detection position of the first is the initial abnormality detection of the abnormal detection, following the abnormality detection control It is the control method in the electric shutter for buildings characterized by making it close again .

With the invention of claim 1, it is possible to make a self-judgment as to whether or not the abnormality detection is due to an obstacle and to reduce the malfunction, and to stop the shutter curtain when detecting an overload due to wind pressure or the like. It is possible to fully close without leaving it.
According to the invention of claim 2 , the shutter curtain can be stopped at a position above the position where the obstacle is detected.
According to the invention of claim 3, even if the influence of wind pressure is high, it is possible to eliminate a malfunction and to make a smooth opening / closing operation.
According to the invention of claim 4, overload detection with few malfunctions can be made without increasing the number of parts.
According to the invention of claim 5, it is determined whether or not the abnormality detection is caused by an obstacle, and the malfunction can be reduced.

Next, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a shutter curtain of an electric shutter for building provided in an opening of a building. The shutter curtain 1 is attached to a winding drum 3 provided in a shutter case 2 disposed above the opening. It is wound. The winding drum 3 is linked to an opening / closing machine 4 housed in the shutter case 2, and the winding drum 3 rotates forward / reversely with forward / reverse rotation of an output shaft (not shown) of the opening / closing machine 4. Thus, the shutter curtain 1 is unwound and wound. As a result, the shutter curtain 1 moves the opening up and down while receiving the movement guide of the guide rails 5 erected on both sides of the opening on both sides, and the fully closed position for closing the opening, and the opening It is set to change its posture between the fully opened position.
Here, the take-up drum 3 is provided with a balance ammunition (not shown) that is energized with the closing operation of the shutter curtain 1, whereby the weight of the shutter curtain 1 and the balance ammunition The biasing force is set to be substantially balanced.

  Reference numeral 6 denotes an operation switch disposed on the guide rail 5, and the operation switch 6 is provided with an opening operation switch PBU, a closing operation switch PBD, and a stop operation switch PBS. Reference numeral 7 denotes a portable remote control tool. The remote control tool 7 is provided with an opening operation switch PBU, a closing operation switch PBD, and a stop operation switch PBS.

  On the other hand, 8 is a control device with a built-in control unit 8a provided with a microcomputer. The control device 8 is disposed in the shutter case 2 and is set so as to drive and control the switch 4. ing. An operation switch 6 is connected to the control unit 8a, and a receiving unit (not shown) to which an operation signal from the remote operation tool 7 is input is connected to the control unit 8a. When any one of the opening operation switch PBU, the closing operation switch PBD, and the stop operation switch PBS is operated, the opening, closing, and stop command signals are input to the control unit 8a. Is set. Then, when any one of the open, close, and stop command signals is input, the control unit 8a outputs the corresponding open drive command, close drive command, or stop drive command to the switch 4. The opening / closing machine 4 is set to open, close and stop.

The switch 4 includes an overload detection sensor (this embodiment) that detects the rotational speed of the electric motor constituting the switch 4 as one of means for monitoring the rotation state (drive state) of the switch 4. In the embodiment, a tacho generator) 9 is provided. Further, the output shaft of the opening / closing device 4 is provided with a position detection sensor (a potentiometer in the present embodiment) 10 for detecting the opening amount of the shutter curtain 1 by detecting the rotation amount of the output shaft.
Based on the detection value input from the position detection sensor 10, the control unit 8a is set to calculate the open position of the shutter curtain 1, and based on the calculation value, the shutter curtain 1 is fully closed. The position is set to detect the fully open position.
Further, the control unit 8a divides the interval between the fully open position and the fully closed position of the shutter curtain 1 into a plurality of operation sections based on the detection value from the position detection sensor 10, and excessively increases the rotation speed of the electric motor in each of these operation sections. The calculation is set based on the detection value input from the load detection sensor 9. Here, the rotation speed of the electric motor in each operation section changes based on the load acting on the shutter curtain 1, and the rotation speed of the electric motor corresponds to the load value.

Further, the control unit 8a is provided with a memory 11 so that the rotation speed (load value) of the electric motor corresponding to each operation section (open position) can be rewritably stored in the opening / closing operation of the shutter curtain 1. Is set. Further, the control unit 8a is provided with an overload detection means (abnormality detection means of the present invention) 8b. Based on the overload detection means 8b, in the process of driving the switch 4 (shutter curtain 1 operation). The rotation speed (current load value) of the current electric motor counted in each operation section (open position) input to the control unit 8a is set to the previous rotation speed (previous load) in the operation section stored in the memory 11. Value). When the difference between the current rotation speed and the previous rotation speed (corresponding to a change value) is within a preset difference range (below the reference change value), the control unit 8a 1 is determined to be operating normally (normal drive of the switch 4), and is set to continue driving of the switch 4.
On the other hand, the control unit 8a compares the current rotational speed with the previous rotational speed, and when the change value exceeds (exceeds) the preset reference change value, this is detected as an overload detection ( It is set to determine that it is in a state where some load is applied to the shutter curtain 1 and is difficult to descend (a state where an overload is applied to the switch 4). In this state, the shutter curtain 1 when the overload is detected based on the overload position detection means (position detection means of the present invention) 8c configured by the position detection sensor 10 provided in the control unit 8a. The open position is detected as an overload position (abnormality detection position) and stored in the memory 11, and the drive of the switch 4 is controlled based on the obstacle determination means 8d described later.

Incidentally, the number of rotations of the electric motor in each operation section changes based on the load acting on the shutter curtain 1, and the number of rotations of the electric motor corresponds to the load value, but as in the present embodiment. In the case where the take-up drum 3 is provided with a balance ammunition, the urging force of the balance ammunition varies depending on the unwinding position (open position) of the shutter curtain 1. Therefore, the overload detection is performed by comparing the rotation speed (load value) of the electric motor in each operation section with the load value in each operation section stored in the memory in advance. Accurate and stable overload detection can be performed.
At this time, the memory 11 stores the rotation speed data in each section at the time of current driving (currently) as the shutter curtain 1 is in a fully closed posture (fully opened posture) without performing obstacle detection described later. It is set so as to be rewritten with the rotation speed data at the time of the previous drive already stored in the memory 11. By doing so, the drive state of the switch 4 is configured to always detect an overload while comparing the current drive state with the previous drive state, and thereby the time-dependent change occurring in the electric shutter. It is possible to absorb the fluctuations in the load of the switch 4 based on the above, and the malfunction is reduced.

  Now, in the process of closing the shutter curtain 1, when the control unit 8a detects the first (first time) overload, the control unit 8a detects the overload position detection means based on the detection value from the position detection sensor 10. While the overload position is stored in the memory 11 by 8c, a stop drive command is output to the switch 4 during the T1 timer time (1 second in the present embodiment) based on the obstacle determination means 8d (stop control) ) To urgently stop the shutter curtain 1 and then output (open control) an opening drive command for T2 timer time (2.5 seconds in the present embodiment) to cause the shutter curtain 1 to open and overload. It is set to perform abnormality detection control for stopping the shutter curtain 1 at a position above the position. Further, after performing the abnormality detection control, the control unit 8a outputs a stop drive command (stop control) for a T3 timer time (in this embodiment, 10 seconds), and then again to the switch 4 again. On the other hand, it is set so that the shutter curtain 1 is closed by outputting a closing drive command (closing control). In the second closing operation, when the second overload is detected, the overload position detection means 8c detects the current (second) overload position, and the detected overload position is When it is the same position as the overload position detected last time, that is, when two overloads are detected at the same open position, it is determined that this is a contact with an obstacle (obstacle detection). Is set. In this state, the control unit 8a outputs a stop drive command to the switch 4 during the T1 timer time to urgently stop the shutter curtain 1, and then outputs an open drive command during the T2 timer time. Then, after the shutter curtain 1 is opened (control similar to the abnormality detection control), it is set to perform the abnormal stop control that continues the stopped state as it is. The shutter curtain 1 is set to be kept stopped at the position. The abnormal stop control is not limited to a configuration that is stopped above the overload position as a configuration similar to the abnormality detection control, but is a configuration that continues to stop the shutter curtain 1 at the overload position. Also good.

On the other hand, when the opening / closing device 4 is closed again, the overload detection is not performed even at the first overload position stored in the memory 11 and the closing control is performed, that is, the shutter curtain 1. If the overload is not detected at the previous overload position (the shutter curtain 1 does not stop at the same position), the previous overload detection is not due to an obstacle, but due to wind pressure, etc. The overload is temporary, and there is no hindrance to the closing operation of the shutter curtain 1, or even if there is an obstacle, it is determined that it has been removed during the abnormality detection control, and after the abnormality detection control, It is set to continue the closing control again. As a result, even when a temporary load such as wind pressure is applied to the shutter curtain 1 and an overload is detected, the shutter curtain 1 remains stopped at the open position in the middle of closing as in the prior art. It is possible to avoid such a situation.
Even if an overload is detected in the process of closing control again, if the overload is detected at an open position different from the previous overload position, at least the previous load detection is not due to an obstacle. In order to determine whether or not the current overload is due to an obstacle after performing the abnormality detection control after determining that it is due to wind pressure or the like and does not hinder the closing operation of the shutter curtain 1. Subsequent to the timer time stop control, the second closing control is set to start. After that, if the overload detection is not performed twice at the same open position, the shutter curtain 1 is continuously closed so that the fully closed posture is established. By means 8d, it is distinguished (self-determination) whether the overload detection by the controller 8a is due to contact with the obstacle of the shutter curtain 1 or due to other factors (self-determination). Only when the judgment is made, the shutter curtain 1 is urgently stopped, and other than that, the shutter curtain 1 is set so as to perform a closing operation without delay, whereby an electric shutter for building with less malfunction can be obtained. In this case, it is configured to determine an obstacle based on twice overload detection at the same opening position, thereby reducing the time for determining whether the obstacle is due to the obstacle or not, and making the above determination In the meantime, the load based on the contact with the shutter curtain 1 acting on the obstacle can be reduced, and the wear of the switch 4 can be reduced.

Next, an example of the control procedure of the switch 4 by the obstacle judging means 8d of the control unit 8a will be described based on the block diagram of FIG. 2 and the flowcharts of FIGS.
When the power is turned on and the initial setting is made, the controller 8a inputs the opening / closing command signal based on the operation of the operation switch PBU or PBD for opening or closing the operation switch 6 or the remote operation tool 7. When one of the command signals is input, the corresponding opening control or closing control is set.

In the closing control, the control unit 8a outputs a closing drive command to the opening / closing device 4 to cause the shutter curtain 1 to close, but there is no input of a stop command signal during the closing control, and the opening command When there is no signal input and overload detection is performed before the fully closed detection is made, the overload position is detected based on the overload position detection means 8c and stored in the memory 11. Subsequently, the control unit 8a determines whether or not an overload position (previous overload position) is stored in the memory 11, and determines that it is not stored, that is, the first overload detection. In this case, the control unit 8a determines that it is impossible to distinguish whether the cause of the overload is due to contact with an obstacle or due to other factors. During this period, the switch 4 is stopped and the shutter curtain 1 is urgently stopped, and then the T2 timer time is released and the abnormality detection control is performed to stop the shutter curtain 1 at a position above the overload position. After the stop control for a time, it is set to return to the close control, output the close drive command, and perform the close operation again.
In addition, the memory 11 stores the previous overload position, that is, the first overload position. If the first overload position is different from the current overload position, that is, the second overload position, the control is performed. The part 8a is not detected as being overloaded at the same open position of the shutter curtain 1, but the control part 8a is still due to contact with the obstacle as to why the overload is detected. The first overload position stored in the memory 11 is deleted, and the second overload position is rewritten as the first overload position. The abnormality detection control is performed, and the control is set to return to the closing control after the T3 timer time.

  On the other hand, when the previous overload position is stored in the memory 11 and the previous overload position and the overload position stored this time are the same, the control unit 8a is in the same open position of the shutter curtain 1. Since the overload is detected, it is determined that the object is in contact with the obstacle (obstacle detection state), the abnormal stop control without reclosing is performed, and the shutter curtain 1 is in the overload position. It is set to continue the stopped state at the top. Then, after this abnormal stop control is performed, the reset operation (reset control) associated with a reset operation such as opening the shutter curtain 1 until the shutter curtain 1 is fully opened is performed, whereby the overload position of the memory 11 is set. It is deleted and set to return to the initial control state. Incidentally, when an abnormality is detected in the process of closing operation in this way, the load value data (the number of rotations of the electric motor for each operation section) based on the current operation of the switch 4 is set not to be rewritten in the memory 11. Has been.

When a stop command signal is input in the process of closing control, the control unit 8a outputs a stop drive command to stop the switch 4, and the memory 11 has a first overload position. If it is stored in memory, it is set to delete it and return to the initial control state.
Further, in the process of closing control, when there is no input of a stop command signal and there is an input of an open command signal, the control unit 8a outputs a stop drive command to stop control of the switch 4 and the memory 11 In the case where the first overload position is stored in memory, it is deleted and this is set to shift to the release control.
Furthermore, in the process of closing control, when no stop command signal is input, no opening command signal is input, and full closing is detected, the control unit 8a outputs a stop drive command to stop the switch 4 In addition to the control, when the first overload position is stored in the memory 11, it is set so as to be deleted. Further, in this case, the shutter curtain 1 is in a fully closed position without detecting abnormality, and the number of rotations of the electric motor for each operating section of the shutter curtain 1 stored in the memory 11 is determined as follows. It is set to return to the initial control state by rewriting the number of rotations detected based on the completed closing operation.

  In the present embodiment configured as described, the opening / closing machine 4 for opening / closing the shutter curtain 1 is controlled to open / close based on a drive command from the control unit 8a. In this case, detection values from the overload detection sensor 9 and the position detection sensor 10 are input to the control unit 8a, and overload detection is performed based on these detection values. Only when the overload position, which is the open position of the shutter curtain 1 at the time of detection, is detected and the overload detection is repeated twice at the same open position (overload position), the failure of the shutter curtain 1 is detected. Abnormal stop control is performed to continue the state in which the shutter curtain 1 is urgently stopped based on the object detection. As a result, even if an overload is detected for the first time, if the overload is not detected at the same overload position in the second closing control, the shutter curtain 1 is in a stopped state with the shutter curtain 1 being opened at the middle closed position. Therefore, the self-judgment of whether overload detection is based on wind pressure or on an obstacle can be made accurately and reliably, and an electric shutter for building with few malfunctions can be obtained.

  In this case, even if an overload is detected for the first time, if the overload is not detected at the same overload position in the process of closing control again, the abnormal stop that continues the stop state of the shutter curtain 1 is performed. In the case of accidental overload detection due to wind pressure or the like, the shutter curtain 1 is not kept open at the position in the middle of closing, but is closed until it is in a fully closed position. Therefore, it is possible to provide an architectural electric shutter with less malfunction.

  Further, in the case where the present invention is implemented, since the abnormality detection is configured to be detected by an overload acting on the switch 4, there is a possibility that a malfunction due to the overload detection may occur due to the strong influence of wind pressure. However, in this case, the two overload detection at the same position is regarded as an obstacle detection and distinguished from the overload detection due to accidental wind pressure. realizable.

  Further, in this case, when overload detection is performed based on the driving state of the switch 4, the rotational speed of the electric motor for each operation section preset by the position detection sensor 10 is detected. By comparing the current rotational speed with the previous rotational speed, malfunctions associated with changes over time are reduced. For this reason, the data of the operation section detected by the position detection sensor 10 can be used as it is as the overload position detected by the overload position detection means 8c, and the common use of the members can be achieved.

  Of course, the present invention is not limited to the above-described embodiment, and the abnormality detection means may be configured such that a seat plate switch is provided on the seat plate at the lower end of the shutter curtain. In addition, when the abnormality detection means is an overload detection means that detects an overload to the shutter curtain based on the driving state of the switch, the configuration of the overload detection means is a configuration based on current detection, voltage detection. It is possible to adopt a configuration based on the load value. Furthermore, the determination of overload is not performed by comparing the current load value with the previous load value as in the above-described embodiment. It is also possible to determine that the current load value exceeds the reference value as an overload.

1A and 1B are a schematic front view and a schematic side view, respectively. It is a block diagram explaining the control state in a control part. It is a flowchart figure explaining the control procedure in a control part. It is a flowchart figure explaining the control procedure in a control part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 3 Winding drum 4 Switch 6 Operation switch 8 Control device 8a Control part 8b Overload detection means 8c Overload position detection means 8d Obstacle judgment means 9 Overload detection sensor 10 Position detection sensor

Claims (5)

An abnormality detection means for detecting an abnormality of the shutter curtain operation in a controller of the opening / closing device that controls opening / closing of the shutter curtain arranged in the opening, and a position detection means for detecting the opening position of the shutter curtain in the abnormality detection as an abnormality detection position When the abnormality detection is configured with an obstacle judgment means for judging whether due obstacle, the obstacle determining unit, with the abnormality detection, as well as detecting an abnormality detection position, the shutter curtain and emergency stop is subsequently re-closed abnormality detection control for opening operation for a predetermined time, due to the re abnormality detection in the course of the re-closure operation is performed, along with detecting the abnormality detection position, the current anomaly detection position is determined to when the abnormal detection position and the position of the first is abnormal detection by the obstacle, abnormal stop system without the reclosure after stopping It was, wherein the abnormality detection position of the current is determined to when different from the abnormality detection position of the first is the first abnormality detection of the abnormal detection, configured to so that is reclosed Following abnormality detection control A control device for an electric shutter for building. 2. The control device for an electric shutter for building according to claim 1 , wherein the abnormal stop control is configured to continue the stop state after the shutter curtain is urgently stopped and opened for a predetermined time .   The electric motor for building according to any one of claims 1 to 2, wherein the abnormality detection means is configured to detect an overload acting on the shutter curtain based on a driving state of the switch. Control device in the shutter.   The abnormality detection means divides the opening / closing range of the shutter curtain into a plurality of preset operation sections, detects the current load value in each operation section, and detects the current load value and the load at the previous drive in the operation section. 4. The architectural electric shutter according to claim 3, wherein when the change value from the previous load value, which is a value, exceeds a preset reference change value, it is determined that an abnormality has been detected. Control device in. An opening / closing control unit for controlling opening / closing of the shutter curtain disposed in the opening, an abnormality detection unit for detecting an abnormality of the shutter curtain operation, and a position detection unit for detecting an opening position of the shutter curtain in the abnormality detection as an abnormality detection position And an obstacle determination means for determining whether the abnormality detection is due to an obstacle, and in the course of the closing operation, the abnormality detection position is detected in response to the abnormality detection, and the shutter curtain is closed. The shutter curtain is reclosed following the abnormality detection control that is stopped and opened for a predetermined time , and the abnormality detection position is detected as the abnormality is detected again during the reclosing operation. , it is determined that when the abnormality detecting position of this time is abnormal detection position and the position of the first time is abnormal detection by the obstacle, re after stopping An abnormal stop control without chains, it is determined that when the abnormality detecting position of this time is different from the abnormality detection position of the first is the initial abnormality detection of the abnormal detection, configured to re-close following the abnormality detection control A control method for an electric shutter for architecture, which is characterized by the above.

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