JPH1171977A - Opening and closing control device for electric shutter for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by providing the second memory in a control section furnished with a shutter position detection switch and making the position to be stored even if power fails during operation and controlling opening and closing on the basis of an operation instruction after power is restored. SOLUTION: A pre-total close position detection switch 8 made up of a counter type limit switch detects a shutter curtain reaching a position slightly before a total close of the shutter curtain, and gets into the on state from the off state prior to the reaching of the shutter curtain to the position. An encoder 9 detects the rotation of a closer 5 by pulse transmission, a control section 7 counts signals form the encoder 9 by a counting means. The second memory means 12a is provided in the control section 7 so that a count value may not disappear even if power fails during operation. Whether it is on the close side or open side from the pre-total close position is detected from the ON or OFF state of the detection switch 8, the total close state is controlled on the basis of a pulse count value, thereby controlling unanticipated operation of the shutter after power is restored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a doorway of a building,
The present invention belongs to the technical field of an opening / closing control device for an electric shutter for a building built in an opening such as a window.

[0002]

2. Description of the Related Art In general, among such electric shutters for buildings, a rotation detecting means such as an encoder is provided in a power transmission path from a switch to a shutter curtain winding means, and the rotation is counted by the rotation detecting means. In some cases, the position of the shutter curtain is recognized based on the number of pulses, and opening / closing control is performed based on the position. In this method, for example, the count value in the fully open state is set to “0”, and this is set as a reference value. The operation is controlled based on this.

[0003]

However, the rotation detecting means counts the current count value and stores (registers) it.
Therefore, the count and the memory are lost when a power failure occurs, and it is not possible to recognize where the shutter curtain is located after the power is restored, and thus there is a problem that the opening / closing control cannot be performed. It is also proposed to register the count number immediately before the power failure in a memory means such as a non-volatile memory, and to set the opening / closing control based on the registered count value after the power is restored. When manual opening and closing are performed manually, the corresponding pulse count is not performed, and in such a case, a gap occurs between the current count value and the actual opening / closing position of the shutter curtain, so that opening / closing control after power is restored cannot be performed. . Therefore, if any of the first opening / closing stop operation command is input after the power is restored, for example, even if this is a closing operation command or a stop operation command, the opening operation is ignored, and the shutter curtain is fully opened. There is one that resets the rotation detection means to the reference state (count zero state)
In this case, there is a problem that unintended opening / closing control is performed such that the opening operation is performed even when the administrator performs the closing operation, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has been made to solve these problems, and comprises a shutter curtain for opening and closing an opening, and a shutter for opening and closing the shutter. An electric switch for opening and closing the curtain, a fully closed position detection unit for detecting a fully closed position where the shutter curtain is set as a position slightly before the fully closed position, and a corresponding opening and closing drive amount. A building electric shutter comprising: a counting means for counting; a position detection means before full closing; and a control unit for outputting an opening / closing control command to the switchgear based on an input from the counting means. In the closing operation, the count of the counting means is counted by detecting the position before full closing, and when the preset count value is reached, the drive stop command of the switch is issued. In providing the fully closed stop means for applying the force, the pre-fully closed position detecting means is constituted by switch means which is switched by reaching the fully closed position, and when the power is restored after a power failure, the fully closed position is detected. This constitutes a position recognizing means for recognizing the position of the shutter curtain based on the switching state of the means. This allows the invention to
In a state where power is restored after a power failure, the approximate position of the shutter curtain is recognized, and the operability can be improved.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an electric shutter for construction. The electric shutter 1 is provided with a shutter curtain 2 for opening and closing an opening, a guide rail 3 for guiding the shutter curtain 2, and a shutter curtain 2. Winding drum 4, an electric switchgear 5, which is a driving source for winding and rewinding of the winding drum,
A control panel 6 for outputting a drive control command to the switch 5 is provided. The switch 5 opens and closes based on a control command from the control panel 6, thereby opening and closing the opening. Are as before. Incidentally, the electric shutter 1 of the present embodiment has a balance type in which the take-up drum 4 is loaded with a balance elastic machine 4a. On the other hand, the switchgear 5 includes an electric motor 5a and a brake device 5b. The brake device 5b is constituted by a friction brake made of carbon, and is always in sliding contact with a disc (not shown) of the electric motor 5a. The brake device 5b is set so as to apply a brake that absorbs the inertial force of the output shaft of the electric motor 5a. When the shutter lock device (not shown) is unlocked, a manual opening / closing operation can be performed. .

[0006] The control panel 6 controls the switchgear 5 based on a command from a control section 7 constituted by a microcomputer. The control section 7 includes a fully closed position detection switch, which will be described later. 8, encoder 9, obstacle detection sensor 10, opening operation switch SU, closing operation switch S
D, signals from appropriate sensors and switches, such as a stop operation switch SS, are input. here,
In the present embodiment, the control panel 6 and the control section 7 are separately provided as separate bodies, but they may be integrated. The position detection switch 8 before fully closed
Is to detect that the shutter curtain 2 has reached a position slightly before it is fully closed (hereinafter referred to as a “position before fully closed”, for example, set to 60 mm). A known mechanical type is employed. Before the fully closed position of the shutter curtain 2 reaches the pre-closed position, the full-close position detection switch 8 is turned off.
It is in the F state, is switched to the ON state when it reaches the fully closed position, and is configured by switch means that maintains the ON state.

The encoder 9 detects the drive rotation of the switch 5 by transmitting a pulse.
Is provided with a counting means 11 for counting the pulse signals input from the encoder 9. The counting means 11 returns to “0” (origin) when the shutter curtain 2 reaches the position before full closing, and counts the current count value A based on the position before full closing during the closing operation of the shutter curtain 2. The current count value A is set to be registered in the first memory means 12 provided in the control unit 7. Here, the first memory means 12 is constituted by a rewritable storage holding means whose registration is deleted when the main power supply is cut off due to a power failure or the like. On the other hand, the control unit is provided with a second memory unit 12a, in which a fully closed count value D, which is a count value from the pre-fully closed position to the fully closed position, is registered. And rewritable storage means which is not erased even in the event of a power failure. The rewriting is set so that it can be appropriately performed by a combination of open, close and stop operation switches SU, SD and SS. Thus, when fine adjustment after the shutter curtain 2 is installed, the opening / closing operation switches SU, SD, and SS attached to the frame need only be operated, and consideration is given to improving operability. I have. Incidentally, the rewritable range can be determined in advance, and in the present embodiment, it is registered as 60 mm in the initial setting, but 10 mm to 16 mm.
It is set so that rewriting can be performed within a range of 5 mm.

Further, in the present embodiment, the obstacle detection sensor 10 detects the speed of the input pulse signal of the encoder 9 and detects that the speed is reduced by the shutter curtain 2 hitting an obstacle (overload detection). It has a configuration. Incidentally, the obstacle detection switch 10 is a switch using a seat plate switch provided on a lowermost seat plate of the shutter curtain 2, and the shutter curtain 2 is used when an obstacle is detected.
Any of the commonly known obstacle detection means such as load fluctuation detection when the closing operation is restricted, detection of closing speed fluctuation, optical detection by obstruction blocking the scanning light source, etc. However, the present invention can be practiced.

Next, an example of a control procedure of the opening operation control in the present embodiment will be described with reference to a block circuit diagram and a flowchart. First, when the power is turned on and initialized, any one of the opening operation switch SU, the closing operation switch SD, and the stop operation switch SS is turned on.
It is determined whether the operation has been performed, and corresponding control is performed. That is, when the closing operation switch SD is turned ON, the closing operation control is performed.
First, the control unit 7 turns on / off the position detection switch 8 before fully closed.
In the F state, that is, it is set so as to determine whether the position of the shutter curtain 2 is located on the open side or the closed side of the position before the fully closed position. Means are configured. When it is determined that the pre-closed position detection switch 8 is in the OFF state (the shutter curtain 2 is located on the opening side of the pre-closed position), it is recognized that the shutter curtain 2 is not closed. Then, the control unit 7 is set so as to output a closing operation command to perform the closing operation of the shutter curtain 2. In the process of the closing operation, it is determined whether or not a detection signal has been input from the obstacle detection sensor 10, and when the obstacle detection signal has been input, a drive stop command is output and an emergency stop is performed. For protection, for example, an obstacle detection control such as opening the shutter curtain 2 for a preset time and then stopping the shutter curtain 2 is performed. As the obstacle detection control, a conventionally known obstacle detection control can be employed. Details are omitted. On the other hand, when the fully closed position detection switch 8 is switched from the OFF state to the ON state in the closing operation process, the pulses from the encoder 9 are counted in synchronization with the timing, and the obstacle detection control is stopped. The closing operation is performed until the count value A reaches the fully closed count value D, and the closing operation is controlled to stop when the current count value A and the fully closed count value D match. It is configured.

On the other hand, it is determined that the closing operation switch SD is operated and the fully closed position detection switch 8 is in the ON state (the shutter curtain 2 is located closer to the closed side than the fully closed position). The first memory means 1
It is determined whether or not the current count value A registered in the shutter curtain 2 is greater than or equal to the fully closed count value. Is ignored. On the other hand, when it is determined that the value is smaller, the closing operation command is set to be output until the current count value A matches the fully closed count value D.

The control in the case where the power is restored after the shutter curtain 2 is manually opened and closed after a power failure will be described with reference to FIG. In this case, the current count value A registered in the first memory means 12 is cleared when the main power is turned off. Therefore, the control unit 7 turns ON / OFF the position detection switch 8 before fully closed.
The state is determined, and if it is determined that the fully closed position detection switch 8 is in the OFF state, it is recognized that the shutter curtain 2 is located closer to the open side than the fully closed position. Are set so that opening / closing operation control corresponding to the opening operation switch SU and the closing operation switch SD can be performed. On the other hand, if it is determined that the pre-closed position detection switch 8 is in the ON state, it is recognized that the shutter curtain 2 is almost almost fully closed. In this case, the current count value A is deleted and the shutter curtain 2 is deleted. Is not detected, and the closing operation switch SD is ignored, but the opening operation is performed when the opening operation switch SU is operated.

Incidentally, in the opening operation control of the present embodiment,
When the shutter curtain 2 reaches the pre-closed position from the fully closed position, the encoder 9 returns to "0", starts counting again from this state, detects the position of the shutter curtain 2, and opens the shutter curtain 2 fully. Accordingly, the lowermost seat plate of the shutter curtain 2 comes into contact with the magsa, and the opening drive is stopped by obstacle detection based on a change in the rotation speed of the encoder 9.

In the embodiment of the present invention constructed as described above, in the course of the closing movement of the shutter curtain 2, the obstacle detection is stopped after reaching the fully closed position by the fully closed position detection switch 8. Encoder 9
When the current count value A matches the fully closed count value D, the shutter curtain 2 is fully closed. As described above, the shutter curtain 2 is controlled to be fully closed by the pulse count value of the encoder 9. However, the position detection switch 8 before fully closed is in the OFF state on the open side from the position before fully closed and is on the closed side. Since the configuration is switched to the ON state, the approximate position of the shutter curtain 2 can be recognized by the ON-OFF state of the position detection switch 8 before full closure even when the power is restored after the power failure. And the shutter curtain 2
When the operation is stopped on the closing side of the fully closed position, even if the closing operation switch SD is turned ON, the closing operation switch SD is ignored and the closing operation is not performed.
An operation corresponding to the ON operation of U, that is, an opening operation of the shutter curtain 2 is performed. On the other hand, when the motor is stopped on the opening side from the fully closed position, the opening / closing operation corresponding to any ON operation of the opening operation switch SU and the closing operation switch SD is performed. There is no unexpected shutter curtain operation like the one of the above. In addition, even if the shutter curtain 2 is manually operated in a state where the main power is turned off, and the position of the shutter curtain 2 at the time of power failure and the position of the shutter curtain 2 at the time of power return are different, the position of the shutter curtain 2 is Full-closed position detection switch 8
To recognize the open side or the closed side based on the position before full closing, and based on this, the drive control of the switchgear 5 is performed, so that the current count value A remains registered and deviates from that before the power failure. There is no problem that the opening and closing control cannot be performed.

Further, in the present embodiment, the position before full closing is set to a small value of 60 mm, which does not allow a person to enter or exit, and even after a power failure, a normal stop position on the open side from this is set. The operability is good because the opening / closing operation can be performed. In addition, for example, when the shutter curtain 2 is manually opened in a power failure or the like and stopped in a state where a person enters or exits, the shutter curtain 2 needs to be opened to a position higher than the position before the fully closed state. After the power is restored, the obstacle detection control is enabled as it is even at the first closing operation, and the safe closing control is performed.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an electric shutter.

FIGS. 2A and 2B are a side view and a front view of the switchgear, respectively.

FIG. 3 is a block diagram illustrating a control state in a control unit.

FIG. 4 is a flowchart illustrating a main routine of a control unit.

FIG. 5 is a flowchart illustrating a closing operation control routine of a control unit.

FIG. 6 is a flowchart illustrating a control procedure of a control unit after a power failure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric shutter 2 Shutter curtain 5 Switch 6 Control panel 7 Control part 8 Position detection switch before full closure 9 Encoder 10 Obstacle detection sensor 11 Counting means 12 First memory means

Claims (1)

[Claims] 1. A shutter curtain for opening and closing an opening, an electric switch for opening and closing the shutter curtain, and detection of a fully closed position where the shutter curtain is set slightly before the fully closed position. And a control unit that outputs an open / close control command to the switchgear based on an input from the fully closed position detection unit, a count unit that counts in accordance with the opening / closing drive amount, and an input from the count unit. The control unit is configured to count the count of the counting means by detecting the pre-closed position in the closing operation of the shutter curtain, and reaches a preset count value. In providing a fully closed stop means for outputting a drive stop command for the switchgear,
The pre-full-close position detecting means is constituted by a switch means that switches by reaching a pre-full-close position, and when power is restored after a power failure, the shutter curtain position is determined based on the switching state of the pre-full-close position means. Opening / closing control device for a building electric shutter constituting a position recognition means for recognizing a position.