JP2013227827A - Opening/closing body control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a defect in opening/closing control of an opening/closing body in which different detection functions are imparted to respective two detection areas set by one area sensor.SOLUTION: An opening/closing body control system includes: an opening/closing body which opens/closes a building opening; one area sensor which sets first and second detection areas ahead of the building opening; and a control unit which performs opening/closing control of the opening/closing body in response to detection by the area sensor. The first and second detection areas have an overlapped area. The control unit disables detection as the second detection area in the overlapped area, and enables only detection as the first detection area.

Description

The present invention relates to an opening / closing body control system, and more particularly to an opening / closing body control system using an area sensor.

In the conventional opening / closing control of the seat shutter, for example, the opening / closing device is driven to open / close by detection by an activation sensor (infrared sensor or the like) provided at the upper part of the opening, and by an obstacle detection sensor (photoelectric sensor or the like) positioned in front of or behind the seat The driving of the switch is stopped by obstacle detection (Patent Document 1). In this device, shutter activation and obstacle detection are performed using two sensors, an infrared sensor and a photoelectric sensor, but an activation area is provided in front of the shutter device using an area sensor called a so-called laser scanner sensor. Set the safety area, detect that a person or vehicle has entered the start area, raise the shutter curtain in the fully closed state, detect that a person or vehicle has entered the safety area, and lower the shutter There are cases where opening / closing control is performed to stop or reverse the curtain (Japanese Patent Application No. 2011-145523).

The laser scanner sensor can set two detection areas, a start area and a safety area, with one sensor, but the two detection areas are set so as to extend substantially horizontally and in a plane from the sensor. Area and activation area are set partially overlapping. As shown in FIG. 6, a laser scanner sensor 5 is installed below one guide rail 1 of the left and right guide rails 1 of the shutter device, and a rectangular shape is formed on the side near the opening with the laser scanner sensor 5 as a base point. A safety area is set, and a wide rectangular area including the safety area is a start area. Some laser scanner sensors can emit a laser at a wide angle (180 degrees) to set a detection area, and a laser scanner sensor 5 'is installed at a position indicated by a dotted line in FIG. However, in order to install the laser scanner sensor 5 'at such a position, it is necessary to provide a dedicated support column and wiring, and to provide such a support column and wiring. Is difficult because it hinders the passage of vehicles and people, and wiring work is also required.

In this case, when the shutter curtain 2 in the fully closed state (especially, the curtain of the sheet shutter) is bent due to wind pressure or the like (FIG. 6A), the shutter curtain 2 swelled in the activation area. There is a possibility that 'is protruded and the start switch is turned on, and the shutter curtain is unintentionally opened. In addition, when a person crosses in front of the shutter curtain in the fully closed state (FIG. 6B), it is not necessary to open the shutter curtain, but it passes in front of the shutter curtain. Despite this, the start switch is turned on and the shutter curtain opens.

Further, when detection is performed in the safety area while the shutter curtain is descending, the shutter curtain is stopped or reversed up and down. However, as shown in FIG. 7, when the shutter curtain is lowered while being bent by the wind or the like, the shutter curtain bulges in the safety area and is detected, and the shutter curtain may stop or reversely rise. In the latter case, “shutter curtain lowering → safety area detection → inversion rising → shutter curtain full opening → shutter curtain lowering” is repeated until the deflection of the shutter curtain is eliminated. Although it is conceivable that the safety area is set a little away from the descending path of the shutter curtain so that it is not detected to the extent that the shutter curtain is bent in the vicinity of the shutter curtain, it is not desirable that a non-detection area exists.
JP 2006-9450 A

An object of the present invention is to solve the problem of opening / closing control of an opening / closing body in which two detection areas are set using one area sensor and each detection area has a different detection function.

The opening / closing body control system adopted by the present invention is:
An opening and closing body for opening and closing the building opening;
One area sensor for setting the first detection area and the second detection area in front of the building opening;
A control unit that controls opening and closing of the opening and closing body according to the detection of the area sensor;
With
The first detection area and the second detection area have overlapping areas,
The control unit invalidates the detection as the second detection area in the overlapping area and enables only the detection as the first detection area.
An opening / closing body control system.

In one aspect, the opening / closing body is a shutter curtain that opens and closes a building opening by ascending / descending,
The first detection area is a safety area located in the vicinity of the opening, and when detection is performed in the safety area when the opening is fully opened or while the shutter curtain is lowered, the lowering of the shutter curtain is restricted,
The second detection area is an activation area including at least a part of the safety area, and when detection is performed in the activation area when the opening is fully closed, the shutter curtain is raised,
While the detection in the overlapping area becomes the detection as the safety area, the detection as the activation area is invalidated, and the shutter curtain is not raised even if the detection in the overlapping area occurs when the opening is fully closed.

In one aspect, the area sensor emits laser in multiple layers up and down,
The control unit includes means for determining whether or not the plurality of layers of lasers are sequentially blocked from the top, and when the plurality of layers of lasers are blocked in order from the top in the safety area while the shutter curtain is descending. Disables detection in the safety area, and activates detection in the safety area to turn up or stop the falling shutter curtain, except when multiple layers of lasers are blocked in order from the top. If detection is performed in the activation area other than the safety area while descending, the determination means does not function, and detection in the activation area is valid regardless of the order in which the lasers of multiple layers are blocked. To do.

In one aspect, the area sensor and the control unit are electrically connected via a circuit unit, and the control unit receives the first signal from the circuit unit and thereby converts the first signal into the first signal. According to the opening and closing control corresponding to the second signal by receiving the second signal from the circuit unit,
The circuit section is
When the first switch (relay B) is switched from the first state (“closed” state) to the second state (“open” state) upon detection of the first detection area (safety area), the first signal ( Obstacle detection signal)
The second signal (relay A) is switched from the first state (“open” state) to the second state (“closed” state) by detection of the second detection area (starting area). Start signal),
When the first switch (relay B) is in the second state (“open” state) and the second switch (relay A) is in the second state (“closed” state), the first signal (obstacle) (Detection signal) only.
By doing so, the detection in the overlapping area becomes the detection as the safety area, while the detection as the activation area is invalidated, and the shutter curtain rises even if there is detection in the overlapping area when the opening is fully closed. Is not done.
The above circuit configuration can be realized without changing the configuration of the area sensor main body and the control unit by changing the configuration of the conventional circuit unit that electrically connects the area sensor and the control unit by changing the wiring. Can do.

In the present invention, by disabling the detection as the second detection area in the overlapping area between the first detection area and the second detection area, it is possible to eliminate a problem that may occur due to the detection as the second detection area in the overlapping area. it can.

In particular, when the opening / closing body is a shutter curtain and the overlapping area is set in the vicinity of the opening, the detection as the second detection area in the overlapping area is invalidated to cause the shutter curtain in the fully closed state to be bent. An unintended shutter curtain can be prevented from rising.

Using a means to determine whether multiple layers of laser emitted from the area sensor are blocked in order from the top, if the laser is blocked in order from the top in accordance with the descent of the shutter curtain, detection of the safety area is invalidated As a result, even if detection is performed in the safety area due to the bending of the shutter curtain that is being lowered, the shutter curtain continues to descend and does not reversely rise or stop.

It is a front view of the sheet shutter which constitutes this embodiment. FIG. 5 is a schematic plan view of the vicinity of the front of the opening where the seat shutter is installed, and shows the setting of the safety area and the activation area according to the present embodiment. The left figure is a conventional wiring diagram and connection diagram, and the right figure is a conceptual diagram of the wiring diagram and connection diagram of this embodiment. It is a conceptual diagram explaining the detection in the safety area which concerns on this embodiment. It is a flowchart of the detection in the safety area which concerns on this embodiment. It is a schematic plan view of the vicinity of the opening where the seat shutter is installed, and is a diagram for explaining a detection failure caused by a conventional safety area and activation area. It is a conceptual diagram explaining the malfunction of the detection in the conventional safe area.

The opening / closing body control system according to the present embodiment is a seat shutter opening / closing control system. As shown in FIG. 1, the sheet shutter device includes left and right guide rails 1 erected at both ends in the width direction of an opening as an entrance of a factory, a sheet-like shutter curtain 2 that opens and closes the opening, and an opening. The shutter curtain storage unit 3 provided above the part, the winding shaft 4 which is positioned in the shutter curtain storage unit 3 and around which the shutter curtain 2 is wound up, and the winding shaft 4 is driven to rotate so as to rotate the shutter curtain. And an opening / closing device (not shown) for driving up and down 2 and a control unit for controlling up and down of the shutter curtain 2. In the present embodiment, the shutter curtain 2 is made of a sheet, but in the present invention, the type of the shutter curtain is not limited, and may be composed of any of slats, panels, pipes, etc. May be a door other than the shutter curtain, and the opening / closing direction of the opening / closing body may be the opening width direction.

As shown in FIG. 1, a laser scanner sensor 5 is installed below one of the guide rails 1. The member on which the laser scanner sensor 5 is installed is not limited, and examples thereof include a wall, a guide rail, and a dedicated support column. The laser scanner sensor 5 can detect the presence of an object such as a person or a vehicle in a predetermined area by irradiating a laser beam limited to a predetermined area. More specifically, the laser scanner sensor 5 scans infrared laser light two-dimensionally and monitors the reflected light to detect a person or an object that has entered the area. The detection area defined by the laser emitted from the laser scanner sensor is set to float horizontally with respect to the ground and the detection range in the vertical direction is relatively thin. By doing so, the sensor detects water or snow accumulated on the ground, flying dust, etc., and prevents malfunction.

The control unit of the shutter device includes inputs from the operation unit (open switch, close switch, stop switch) and each detection means (detection in the safety area, detection in the start area, obstacle detection means, shutter fully open state detection means, all shutters On the basis of the detection result of the closed state detecting means or the like, the opening / closing control of the shutter device (raising, lowering, stopping, maintaining the fully closed state, maintaining the fully open state) of the shutter curtain is performed. It will be understood by those skilled in the art that the state of the shutter curtain (fully opened state, fully closed state, descending, etc.) can be determined by well-known means such as an encoder and a limit switch. Hereinafter, the setting of the safety area and the activation area on the front side of one side of the opening using the laser scanner sensor 5 will be described, but the laser scanner sensor is also provided on the other side of the opening (the opposite side across the opening). It will be appreciated by those skilled in the art that a similar detection area may be set by providing

As shown in FIG. 2, the laser scanner sensor 5 is a single sensor, and sets two detection areas, a safety area and an activation area, in front of the opening. Specifically, in the front of the opening, a rectangular first detection area is set on the side close to the opening, and includes a first detection area, and a wide area formed in a direction away from the opening. A second detection area of the shape is set. The second detection area is set to overlap with the first detection area. In the overlap area, the detection as the second detection area is invalidated and only the detection as the first detection area is enabled. In other words, the first detection area is set as the safety area, and the second detection area (excluding the overlapping area with the first detection area) is set as the activation area. One laser scanner sensor includes first detection means (obstacle detection means) as detection in the safety area and second detection means (start switch) as detection in the activation area. And function as an activation sensor.

In one aspect, the activation sensor detects a person or a vehicle that has entered the front space (second detection area) of the opening when the opening is fully closed, the opening is half-open, or the shutter curtain is lowered. By outputting to the control unit, it is a sensor for raising the shutter curtain in response to a command from the control unit, and the detection of the activation sensor is invalidated when the opening is fully open and the shutter curtain is raised. In one aspect, the safety sensor detects an obstacle detection signal by detecting a person or an object (such as a vehicle) that has entered the front space (first detection area) of the opening when the opening is fully open and the shutter curtain is lowered. By outputting to the control unit, it is a sensor for regulating the lowering of the shutter curtain by a command from the control unit, and the detection of the safety sensor is invalidated when the opening is fully closed and the shutter curtain is raised.

The left figure (A) of FIG. 3 shows a conventional wiring diagram. The yellow line and the white line correspond to the detection in the second detection area (conventional activation area) and the activation sensor in Patent Document 1, and the purple line and the pink line indicate the first detection area (conventional safety area) and the patent document. 1 corresponds to the detection by the obstacle detection sensor 1. The control unit (control panel) of the shutter device determines and processes the activation signal and the obstacle detection signal as follows. In FIG. 3A, when the first terminal K1 to which the yellow line is connected and the second terminal C to which the white line is connected are open, no activation signal is generated. When the first terminal K1 to which the yellow line is connected and the second terminal C to which the white line is connected are closed, an activation signal is generated, and the opening operation (shutter curtain rise) is performed by the control unit that has received the activation signal. Done. When the third terminal Ab to which the purple line is connected and the fourth terminal C to which the pink line is connected are closed, no obstacle detection signal is generated. When the third terminal Ab to which the purple line is connected and the fourth terminal C to which the pink line is connected are open, an obstacle detection signal is generated, and a predetermined operation (for example, by the control unit receiving the obstacle detection signal) , The reversing and raising of the shutter curtain being lowered) is performed.

FIG. 3B (B) is a connection diagram showing a state where no people or vehicles exist in the second detection area (starting area) and the first detection area (safety area) (when no detection is performed). The relay A related to the second area is in the “open” state, the first terminal K1 and the second terminal C are in the open state, and the relay B related to the first area is in the “closed” state. The third terminal Ab and the fourth terminal C are in a closed state. Neither the start signal nor the obstacle detection signal is generated. The left figure (C) of FIG. 3 is a connection diagram showing a state (at the time of detection) in which a person, a vehicle, or the like has entered only the second detection area (starting area) (the area excluding the overlapping area in the second detection area). is there. The relay A related to the second area is in the “closed” state, the first terminal K1 and the second terminal C are in the closed state, and the relay B related to the first area is in the “closed” state. The third terminal Ab and the fourth terminal C are in a closed state. An activation signal is generated, and no obstacle detection signal is generated. The left figure (D) of FIG. 3 is a connection diagram showing a state (at the time of detection) in which a person, a vehicle, or the like has entered both the second detection area (starting area) and the first detection area (safety area) (overlapping area). is there. The relay A related to the second area is in the “closed” state, the first terminal K1 and the second terminal C are in the closed state, and the relay B related to the first area is in the “open” state. The third terminal Ab and the fourth terminal C are in an open state. Both an activation signal and an obstacle detection signal are generated. In the fully closed state of the opening, when the shutter curtain bulges up to the overlapping area, or when a person or vehicle crosses the overlapping area in front of the opening, the state shown in FIG. Output to the control unit and the shutter curtain is raised.

In this embodiment, the wiring is changed (the white line is connected to the purple line) as shown in the right part of FIG. 3A, and the configuration of the circuit unit that electrically connects the laser scanner sensor and the control unit is changed. Thus, when detection in the first detection area and detection in the second detection area are simultaneously performed in the overlap area without any change to the control unit (control panel), the second in the overlap area is performed. The detection as the detection area is invalidated and only the detection as the first detection area is enabled. By doing so, the second detection area excluding the first detection area becomes the activation area, and no activation area is set in the vicinity of the opening. Hereinafter, it demonstrates in detail based on FIG. 3 right figure (B)-(D).

The right figure (B) of FIG. 3 is a connection diagram showing a state where no people or vehicles exist in the second detection area and the first detection area (when no detection is performed). The relay A related to the second area is in the “open” state, the first terminal K1 and the fourth terminal C are in the open state, and the relay B related to the first area is in the “closed” state. The third terminal Ab and the fourth terminal C are in a closed state. Neither the start signal nor the obstacle detection signal is generated. The right figure (C) of FIG. 3 is a connection diagram showing a state (at the time of detection) in which a person, a vehicle, or the like has entered only the second detection area (the area excluding the overlapping area in the second detection area). The relay A related to the second area is in the “closed” state, the first terminal K1 and the fourth terminal C are in the closed state, and the relay B related to the first area is in the “closed” state. The third terminal Ab and the fourth terminal C are in a closed state. An activation signal is generated, and no obstacle detection signal is generated. FIG. 3D (D) is a connection diagram illustrating a state (at the time of detection) in which a person, a vehicle, or the like has entered both the second detection area and the first detection area (overlapping area). The relay A related to the second area is in the “closed” state, the relay B (connected in series between the relay A and the fourth terminal C) is in the “open” state, and the first terminal K1 and the first terminal The 4 terminal C is in an open state, the relay B related to the first area is in an “open” state, and the third terminal and the fourth terminal C are in an open state. An activation signal is not generated, but an obstacle detection signal is generated. Therefore, in the fully closed state of the opening, even if the shutter curtain bulges to the overlapping area, or even if the person or vehicle crosses the overlapping area in front of the opening and the relay A is in the “closed” state, FIG. As shown in D), the first terminal K1 and the fourth terminal C are in an open state, and the activation signal is not generated and the shutter curtain is not raised. Thus, by changing the configuration of the circuit unit that electrically connects the laser scanner sensor and the control unit by changing the wiring, the configuration of the laser scanner sensor body and the control unit can be changed without changing the configuration of the laser scanner sensor body and the control unit. Validity / invalidity of detection as the second detection area can be selected and set. For example, according to the type of shutter (shutter curtain) and the user's application, the first wiring configuration (for example, the left diagram in FIG. 3A) and the second wiring configuration (for example, the right diagram in FIG. 3) by switching the wiring. (A)) By selecting any of the above, the configuration of the circuit unit that electrically connects the laser scanner sensor and the control unit can be made variable, and detection valid / invalid as the second detection area in the overlapping area is selected. Can be set.

As shown in FIG. 2, when a predetermined rectangular area close to the opening is set as the safety area, and the detection is performed in the safety area when the opening is fully opened or while the shutter curtain is lowered, the shutter curtain is lowered. Be regulated. More specifically, when the detection is performed in the safety area when the opening is fully opened, the lowering of the shutter curtain is restricted, and when the detection is performed in the safety area while the shutter curtain is descending, the lowering is performed. The shutter curtain inside stops or reverses.

In one aspect, in addition to detection in the safety area, one or more obstacle detection means (an infrared multi-axis area sensor that detects an object located on the shutter curtain descending path, an object that is close to the shutter curtain descending path is detected) A photoelectric sensor or the like as a proximity sensor may be provided, and in this case, the shutter curtain is lowered on condition that all obstacle detection means have not detected an object.

As shown in FIG. 2, in the second detection area, a predetermined rectangular area far from the opening except for the overlapping area (first detection area) is set as the activation area, and when the opening is fully closed, When the detection is performed, the start switch is turned on, and the shutter device is driven by the control unit when the control unit receives the start signal, so that the opening / closing device is driven based on the start signal, and the shutter curtain is fully closed. Rises, the opening is opened, and the shutter is fully opened. Even when detection is performed in an area overlapping the safety area in the second detection area when the opening is fully closed, the detection as the activation area is invalidated and the shutter curtain does not rise. In addition, when the shutter curtain is stopped in the half-opened state of the opening or the shutter curtain is being lowered, and the detection is performed in the activation area, the activation switch is turned on and the shutter device is controlled. When the unit receives the start signal, the switch is driven based on the start signal, the shutter curtain in the half-open stop state, the shutter curtain in the descending state rises, the opening is opened, and the shutter is fully open. It becomes.

As shown in FIG. 4, the laser scanner sensor performs detection by emitting a plurality of layers of lasers (four layers in this embodiment) vertically. In order from the bottom, the first laser beam C1, the second laser beam C2, the third laser beam C3, and the fourth laser beam C4 are used. The control unit includes means for determining whether or not the four layers of lasers are blocked in order from the top in detection of the safety area (first detection area). More specifically, when the shutter curtain is lowered, detection by the fourth laser beam C4, detection by the third laser beam C3, detection by the second laser beam C2, and detection by the first laser beam C1 are performed in this order in time series. In this case, the detection in the safety area is detected as the shutter curtain itself being lowered (for example, the bulging part of the shutter curtain), the detection in the safety area is invalidated, and the shutter curtain is lowered. Let it continue. In this way, when the laser is interrupted in order of C4 → C1 as the shutter curtain descends, the detection of the safety area is invalidated, so that even if the shutter curtain is bent down, it is reversed up or stopped. I try not to.

When the detection is performed in the safety area, the detection in the safety area is effective except when the four-layer laser is blocked in order from the top. Raise or stop the shutter curtain. In cases other than the lowering of the shutter curtain, for example, since vehicles such as people and forklifts move horizontally, if a person or vehicle entering the safety area blocks the laser, it will not be detected in the order of C4 → C1. Detection in the safe area is effective.

In the detection in the activation area (second detection area), it is not determined at what timing the four layers of lasers are blocked, and the activation switch is turned on when any of the lasers is blocked. If detection is performed in the startup area other than the safety area while the shutter curtain is descending, the determination means does not function, and detection in the startup area is valid regardless of the order in which multiple layers of lasers are blocked. As a result, the shutter curtain that is being lowered moves upside down. That is, the control unit performs different opening / closing control for each area in the activation area and the safety area even if the same shutter is being detected.

2 Shutter curtain 5 Laser scanner sensor (area sensor)

Claims (4)

An opening and closing body for opening and closing the building opening;
One area sensor for setting the first detection area and the second detection area in front of the building opening;
A control unit that controls opening and closing of the opening and closing body according to the detection of the area sensor;
With
The first detection area and the second detection area have overlapping areas,
The control unit invalidates the detection as the second detection area in the overlapping area and enables only the detection as the first detection area.
Opening and closing body control system. The opening / closing body is a shutter curtain that opens and closes a building opening by ascending / descending,
The first detection area is a safety area located in the vicinity of the opening, and when detection is performed in the safety area when the opening is fully opened or while the shutter curtain is lowered, the lowering of the shutter curtain is restricted,
The second detection area is an activation area including at least a part of the safety area, and when detection is performed in the activation area when the opening is fully closed, the shutter curtain is raised,
While the detection in the overlapping area becomes detection as the safety area, the detection as the activation area is invalidated, and even if there is detection in the overlapping area when the opening is fully closed, the shutter curtain is not raised,
The opening / closing body control system according to claim 1. The area sensor emits laser in multiple layers up and down,
The control unit includes means for determining whether or not the plurality of layers of lasers are sequentially blocked from the top, and when the plurality of layers of lasers are blocked in order from the top in the safety area while the shutter curtain is descending. Disables detection in the safety area, and activates detection in the safety area to turn up or stop the falling shutter curtain, except when multiple layers of lasers are blocked in order from the top. If detection is performed in the activation area other than the safety area while descending, the determination means does not function, and detection in the activation area is valid regardless of the order in which the lasers of multiple layers are blocked. To
The opening / closing body control system according to claim 2. The area sensor and the control unit are electrically connected via a circuit unit, and the control unit receives the first signal from the circuit unit to perform opening / closing control according to the first signal. Performing open / close control according to the second signal by receiving the second signal from the circuit unit,
The circuit section is
When the first switch is switched from the first state to the second state by the detection of the first detection area, the first signal is output,
When the second switch is switched from the first state to the second state by detection of the second detection area, the second signal is output,
When the first switch is in the second state and the second switch is in the second state, the first switch is configured to output only the first signal.
The opening-closing body control system of any one of Claims 1-3.

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