JP2005016214A - Crime prevention device for electric doors - Google Patents

Abstract

A security control mode is provided when a security control mode is provided in a control unit of a switch having a brakeless and encoder-type rotation detection sensor.
A control unit 6 of a switch 4 is provided with all the shutter curtains 1 based on a normal control mode in which the switch 4 is driven and controlled based on an operation of an operation switch 7 and when the shutter curtain 1 is manually opened. A crime prevention control mode for driving and controlling the switch 4 to be closed is provided, and mode switching means for switching from the normal control mode to the crime prevention control mode when the shutter curtain 1 is fully closed and when the power failure is restored is provided.
[Selection] Figure 6

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of a security device for an electrically operated door provided at an entrance / exit of a building.
[0002]
[Prior art]
In general, in accordance with an input of an opening / closing command by an operation of an opening / closing operation tool, the control unit performs drive control of the opening / closing device, whereby the opening / closing door is configured to open / close the opening. When the door is an electric shutter, for example, it is necessary to consider security measures when the shutter curtain is fully closed. Therefore, locking the shutter curtain in the fully closed position is a countermeasure against being forcibly opened, but as one of the locking modes, a brake device is provided in the electric motor, and when the drive of the electric motor stops, the brake device It has been proposed to restrict the opening (upward movement) of the shutter curtain by the braking force of the shutter. On the other hand, an electric motor with a brake device is expensive and has a problem that it is increased in size. Therefore, it is attempted to use a simplified electric motor without a brake. In this case, a mechanical locking device such as a latch is generally used as a security means as a crime prevention means. In this case, however, not only the locking / unlocking operation by the administrator is troublesome but also a shutter curtain. If you forget to unlock when opening the door, the motorized shutter may be damaged.
Therefore, when a brakeless electric motor is used, the electric motor is provided with a rotation detection sensor and a mechanical full-close detection sensor that detects the full closure of the shutter curtain, while the control unit of the switch is operated for opening and closing. A security control mode is provided in which a normal control mode for driving and controlling the switch based on the operation of the tool and a security control mode for driving and controlling the switch to fully close the shutter curtain when the shutter curtain is fully closed when the shutter curtain is fully closed are provided. It is configured to switch from the normal control mode to the crime prevention control mode when the fully-closed detection sensor detects that the shutter curtain is fully closed. It has been proposed to prevent crime as a state in which manual opening is restricted (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-102948
[Problems to be solved by the invention]
On the other hand, in recent years, for the purpose of improving reliability in addition to reducing costs, an encoder-type rotation detection sensor is provided in a brakeless electric motor, and the rotation speed at the upper and lower limits of the shutter curtain preset in the control unit is nonvolatile. In addition, it is known that the current position of the shutter curtain is detected from the rotational speed detection of the electric motor to fully open and close the shutter curtain. In this device, the control unit is configured to perform drive control while storing the current position of the shutter curtain in a volatile memory as needed, so that a power failure occurs when the shutter curtain is fully closed, or the plug is In the event that the power is cut off due to disconnection, etc., the data at the current position will be lost in the control unit, so the shutter curtain is fully closed, but it is fully closed. Cannot be recognized. For this reason, when the crime prevention means is employed in such an electric shutter, for example, as described above, if the power is turned off in the fully closed state, the crime prevention mode is restored even if the power is restored. The problem is that the locked state cannot be maintained. Such a problem can be avoided by providing a backup system in the control unit, but in order to do so, parts such as a large battery and a super capacitor are separately required, resulting in high costs. There was a problem, and there was a problem to be solved by the present invention.
[0005]
[Means for Solving the Problems]
The present invention has been created in order to solve these problems in view of the above circumstances, and is provided with an open / close control unit for a switch having a rotation detection sensor for detecting the rotation of a motor shaft. A normal control mode for driving and controlling the switch based on the operation of the operation tool and a crime prevention control mode for controlling the switch to close the door based on manual opening when the door is stopped are provided. On the other hand, mode switching means for switching from the normal control mode to the crime prevention control mode when the door is fully closed and when the power failure is restored is provided.
In this way, even when the brake-less and encoder-type rotation detection sensor is provided to reduce the cost, a crime prevention device with high crime prevention can be obtained.
In this case, when the mode switching means of the present invention is switched to the crime prevention control mode when the door is fully closed, the mode switching means returns to the normal control mode based on the input of the opening command signal from the opening / closing operation tool, and upon power failure recovery In the case of switching to the crime prevention control mode, it can be configured to return to the normal control mode based on the door body being fully opened. It is possible to return to the normal control mode in the process of performing the opening / closing operation, and to switch the mode from the crime prevention control mode to the normal control mode with good operability.
Further, in this configuration, the mode switching means of the present invention can be configured to switch the mode after a predetermined time has elapsed since the fully closed state and / or power failure recovery. Thus, it is possible to provide a security device with high stability and reliability with few malfunctions.
Further, in this device, the rotation detection sensor of the switch according to the present invention is an encoder type sensor, and the count value of the rotation number of the motor shaft is stored in a volatile memory so that the count value disappears due to a power failure. It can be configured.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings of FIGS.
In the drawings, 1 is a shutter curtain of an electric shutter provided in an opening of a building, and the shutter curtain 1 is a winding shaft (rotating shaft) disposed in a shutter case 2 above the opening. 3, the winding shaft 3 rotates based on the forward / reverse rotation drive of the opening / closing machine 4, and moves while being guided by the guide rails 5 on both sides of the opening, and is stored in the shutter case 2. The posture changes into an open posture that opens the opening and a closed posture that closes the opening, both of which have a conventional configuration.
[0007]
Reference numeral 6 denotes a control unit that drives and controls the opening / closing device 4, and the control unit 6 is configured by using electronic components such as a microcomputer. For example, an operation switch 7 disposed on the side of the opening or a remote unit (not shown). An open command signal, a stop command signal, and a close command signal are input based on the operation of the open switch PBU, the stop switch PBS, and the close switch PBD of the switch 7 connected to the operation switch. Is set.
[0008]
On the other hand, the opening / closing machine 4 incorporates member devices such as an electric motor and a speed reducer, but does not incorporate a brake device, while the opening / closing machine 4 is synchronized with the rotation of the electric motor. An encoder-type rotation detection sensor 8 that outputs a pulse signal is provided, and is set to output a detection signal (pulse signal) from the rotation detection sensor 8 to the control unit 6. On the other hand, the control unit 6 is provided with a rotation detection means, which monitors the number of rotations of the electric motor based on a detection signal from the rotation detection sensor 8, and fully opens, fully closes, and opens and closes the shutter curtain 1. It is set to detect the current position in the middle. The fully open and fully closed positions of the shutter curtain 1 are set in advance in the process of initial setting described later, and are set to be stored in a nonvolatile memory. The current position is a volatile memory. The control unit 6 is set to perform drive control of the switch 4 based on the determination as to whether or not the current position has reached the fully open position or the fully closed position.
Further, the control unit 6 is provided with an overload detection means, which monitors the rotation speed of the electric motor based on a detection signal from the rotation detection sensor 8 and acts on the electric motor (overload shutter shutter 1). It is set to output an overload detection signal by detecting that the load is applied.
[0009]
By the way, the control unit 6 of the present embodiment is set so as to drive and control in either the normal control mode or the crime prevention control mode when driving the switch 4. In the normal control mode, the control unit 6 is operated by any one of the opening switch PBU, the closing switch PBD, and the stopping switch PBS of the operation switch 7 to input an opening, closing, and stop command signal. Accordingly, any one of an open drive command, a stop drive command, and a close drive command corresponding to the command signal from the operation switch 7 is output to the switch 4 so that the switch 4 is rotated in the corresponding rotation direction. It is set to be driven, and this corresponds to normal opening / closing control. On the other hand, in the crime prevention control mode, the control unit 6 performs the same opening / closing control as in the normal control mode, and outputs the opening drive command when the switch 4 is not driven, that is, there is no input of the opening drive command. In a state where the shutter curtain 1 is opened from the rotation detection sensor 8, a closing drive command is output to the switch 4 to regulate the opening of the shutter curtain 1, The shutter curtain 1 is set to a locked state where it is not opened.
[0010]
The control unit 6 is provided with mode switching means, and the security control mode is changed from the normal control mode to the fully closed state when the shutter curtain 1 is fully closed and when the power is restored from the power failure state. Even if the shutter curtain 1 is fully closed after the power failure is restored, the crime prevention control mode is set. Thus, the shutter curtain 1 is restricted from being opened, and is configured to be an electric shutter with high crime prevention.
[0011]
Next, the control procedure of the switch 4 by the control unit 6 will be described.
First, the initial setting for setting the fully open position and the fully closed position of the shutter curtain 1 based on the detection signal from the rotation detection sensor 8 and storing them in the nonvolatile memory will be described with reference to the flowchart shown in FIG. In executing this initial setting, the power is turned on to activate the control unit 6 and the shutter curtain 1 is fully opened. In this state, the count value of the pulse signal from the rotation detection sensor 8 is set to 0 and is registered as a fully open value, while the control unit 6 determines whether or not a close command signal has been input, and closes the close command signal. Is input, the closing drive command is output to the switch 4. Then, the control unit 6 monitors the overload state based on the overload detection means on the pulse signal from the rotation detection sensor 8 on the condition that no stop signal is input during the closing operation, and the rotation detection sensor 8. Outputs the overload detection signal based on the fact that the shutter curtain 1 is fully closed and the seat plate 1a located at the lowermost end is in contact with the floor surface, and the control unit 6 issues a stop drive command. In addition to outputting to the switch 4, the count value of the pulse signal of the rotation detection sensor 8 from the fully open state to the overload state is registered as a fully closed value. In this way, the fully open position and the fully closed position are registered. And the initial setting is completed.
[0012]
After the initial setting, the control unit 6 performs the opening / closing control based on the normal control mode or the security control mode of the shutter curtain 1, and the flowchart of FIGS. Based on
When the control unit 6 inputs an opening, closing, and stop command signal corresponding to each of the switches PBU, PBD, and PBS from the operation switch 7, a corresponding drive control state (open drive control, close drive control, stop drive control). Is set to migrate. When the control unit 6 receives an open command signal and shifts to the open drive control, as shown in the flowchart of FIG. 4, the open command is output to the switch 4 while the stop command is output. Whether or not a signal is input or a closing command signal is input is determined, and if there is any of these signals, the driving is set to stop driving control or closing driving control. On the other hand, when it is determined that these command signals are not input, the current count value (referred to as a count value) of the pulse signal of the rotation detection sensor 8 reaches the fully open value that is the fully open position of the shutter curtain 1. If it is not reached (not fully open), it is subsequently determined whether an overload detection signal is input. If an overload detection signal is input, the shutter curtain 1 It is determined that an obstacle has been detected in the process of opening the door, and obstacle detection control (stop control such as emergency stop) is performed.
On the other hand, when no obstacle is detected in the process of opening the shutter curtain 1, the current count value reaches the fully open value, and the overload detection signal is input, the shutter curtain 1 is fully opened, and the shutter It is determined that the lowermost seat plate 1a of the curtain 1 is in contact with the lintel and outputs a drive stop command to the switch 4.
[0013]
When it is determined that the closing control signal is input from the operation switch 7, the control unit 6 shifts to the closing drive control shown in the flowchart of FIG. 5 and outputs a closing drive command to the switch 4. And the control part 6 judges the presence or absence of the input of a stop command signal from the operation switch 7, and the input of an open command signal, and when it judges that it was input, it transfers to the drive control corresponding to a command signal. On the other hand, when it is determined that these command signals are not input, it is determined whether or not the count value of the pulse signal of the rotation detection sensor 8 has reached the fully closed value that is the fully closed position of the shutter curtain 1. If not reached (not fully closed), it is determined whether an overload detection signal is subsequently input. If an overload detection signal is input, the shutter curtain 1 is closed. It is determined that the obstacle is detected and the obstacle detection control (stop control such as emergency stop) is performed.
[0014]
On the other hand, if no obstacle is detected during the closing operation of the shutter curtain 1, the current count value reaches the fully closed value, and an overload detection signal is input, the shutter curtain 1 is fully closed. Thus, it is determined that the lowermost seat plate 1a of the shutter curtain 1 is in contact with the floor surface, and a drive stop command is output to the switch 4.
When the control unit 6 recognizes that the shutter curtain 1 is fully closed and outputs a drive stop command in this way, the control unit 6 sets (activates) the timer T, and a preset timer time elapses. When the release command signal is not input during this period, the normal control mode is set to the crime prevention control mode based on the mode switching means. Here, if an open command signal is input during the timer time, the shutter curtain 1 is output to the switch 4 in the normal control mode without switching to the security control mode. Is set to open.
[0015]
On the other hand, when the mode is switched to the crime prevention mode, the control unit 6 determines whether or not an opening command signal is input, and when the opening command signal is input, outputs an opening drive command to the switch 4. On the other hand, the security control mode is set to be switched to the normal control mode. On the other hand, in the crime prevention control mode, there is no input of an opening command signal, and the change in the count value from the rotation detection sensor 8 is a preset value (for example, 5 pulses) or more, and the shutter curtain 1 is preset. When the open state is reached, the control unit 6 determines that the shutter curtain 1 in the fully closed state is manually opened, i.e., has been opened in an unauthorized manner. Until the current count value reaches the fully closed value, a closing drive command is output so that the crime prevention operation for closing the shutter curtain 1 is performed.
In addition, when the shutter curtain 1 is fully closed, it is switched to the crime prevention control mode, and the return to the normal control mode from this state is made based on the input of the opening command signal. It is the composition.
[0016]
Next, a case will be described in which a power failure occurs, the power of the electric shutter is once cut off, and the power is restored again. In this case, the control unit 6 is set to drive and control the switch 4 based on the crime prevention control mode, and monitors the signal from the rotation detection sensor 8 while the switch 4 is stopped. When the change of the count value exceeds a preset setting value (for example, 5 pulses), it is set to perform the same operation as the crime prevention operation when the shutter curtain 1 is fully closed.
Here, a power failure may occur both when the shutter curtain 1 is opened and closed, and when the shutter curtain 1 is stopped, the control by the control unit 6 is performed as shown in FIG. This will be described with reference to a flowchart.
In this case, when the closing command signal is input after the power failure recovery, the closing drive command is issued until the overload detection signal is input based on the absence of the opening command signal and the stop command signal. The shutter curtain 1 is set to stop based on overload detection (obstacle detection) due to contact with the floor surface, provided that there is no obstacle in the opening. Has been. In this state, since the control unit 6 is switched to the crime prevention control mode, the change in the count value from the rotation detection sensor 8 is set in advance even when the switch 4 is in the drive stop state (the shutter curtain 1 is in the stop state). When the set value is reached, the crime prevention operation is performed and the shutter curtain 1 is set to the locked state.
[0017]
On the other hand, when an open command signal is input to the control unit 6 in the crime prevention control mode, an open drive command is issued until an overload detection signal is input based on the absence of the close command signal and the stop command signal. The shutter curtain 1 is set to stop based on overload detection (obstacle detection) due to contact with the lintel. In this state, the control unit 6 determines that the shutter curtain 1 is fully open, sets the pulse signal from the rotation detection sensor 8 to 0, and registers the count value 0 as a fully open value in the memory. It is set to be. Further, at this time, the mode switching means of the control unit 6 is set to switch the mode from the crime prevention control mode to the normal control mode.
By the way, during the crime prevention control mode, even if the shutter curtain 1 is stopped even if it is in any open state, it is set so that the crime prevention operation is performed. The crime prevention operation is set so as to be a closing operation corresponding to the amount by which the shutter curtain 1 is lifted.
After switching to the normal mode, the control unit 6 determines that the shutter curtain 1 is fully closed when the shutter curtain 1 is closed based on the closing command signal, in accordance with the input of the load detection signal. The count value of the pulse signal of the rotation detection sensor 8 is set to be registered as a fully closed value, and thereafter, drive control in the normal control mode based on the fully closed value and the fully open value (0). Is set to be done.
[0018]
In the embodiment of the present invention configured as described above, a drive command corresponding to the switch 4 is output based on an input of an open, close, or stop command signal from an operation tool such as the operation switch 7. As a result, the shutter curtain 1 is opened and closed. In this case, the control unit 6 is provided with mode switching means, and when the shutter curtain 1 is fully closed, or returned from the power failure state. When this happens, the normal control mode is switched to the crime prevention control mode. Thus, when the shutter curtain 1 is fully closed, a power failure occurs, and the crime prevention mode is switched even after the power failure is restored. As a result, when the shutter 4 is fully closed, assuming that the opening / closing machine 4 is brakeless and is not provided with a backup system for the current count value of the rotation detection sensor 8, the power failure is restored. Even after this, it is possible to perform a crime prevention operation against unauthorized opening, and to provide a more reliable crime prevention device.
[0019]
In addition, in this case, when the control mode is switched to the crime prevention control mode in response to the restoration of the power failure, the control unit 6 opens the shutter curtain 1 to contact the lintel and inputs the load detection signal. It is configured to switch from the control mode to the normal control mode. For this reason, when the shutter curtain 1 becomes a power failure in the middle of opening and closing and the shutter curtain 1 is closed after the return, the controller 6 does not recognize the state as the fully closed state of the shutter curtain 1, Even in the state, the crime prevention control mode is maintained, and the crime prevention operation can be performed. In addition, since the switching (transition) to the normal control mode after the recovery from the power failure is made by temporarily opening the shutter curtain 1, the user is performing the normal opening / closing operation of the shutter curtain 1. Thus, the normal control mode can be automatically restored without being particularly conscious, so that it is possible to provide an electrically operated shutter that does not feel strange and has good operability.
[0020]
Further, in the case where the present invention is implemented, when the shutter curtain 1 is fully closed, it is switched to the crime prevention control mode after a predetermined time has elapsed, so that the seat plate receives a reaction when the shutter curtain 1 is fully closed. There is no crime prevention control mode at the time when 1a is bouncing and is not stable, and there is little malfunction, and a crime prevention device with high stability and reliability can be obtained.
[0021]
Of course, the present invention is not limited to the above-described embodiment, and it is also possible to set the timer to switch to the crime prevention control mode after a predetermined time has elapsed even when the power failure is restored. By doing in this way, when a power failure occurs in the middle of opening and closing, power is immediately restored, and the operation of the shutter curtain 1 is not stable, this is regarded as manual opening and the crime prevention operation is performed. It can be set as the crime prevention device which does not have a malfunction and does not malfunction.
[Brief description of the drawings]
FIG. 1 is a schematic front view of an electric shutter.
FIG. 2 is a block diagram illustrating a control state in a control unit.
FIG. 3 is a flowchart illustrating initial setting in a control unit.
FIG. 4 is a flowchart illustrating open drive control in a control unit.
FIG. 5 is a flowchart for explaining closing drive control in a control unit.
FIG. 6 is a flowchart for explaining the control state of the control unit at the time of power failure recovery.
[Explanation of symbols]
1 Shutter curtain 4 Opening / closing machine 6 Control unit 7 Operation switch 8 Rotation detection sensor

Claims (4)

In the control unit of the switch equipped with a rotation detection sensor that detects the rotation of the motor shaft, the normal control mode for controlling the drive of the switch based on the operation of the switch operating tool, and manual opening when the door is stopped A security control mode for controlling the opening and closing of the switch to close the door based on the above is provided, and mode switching means for switching from the normal control mode to the security control mode is provided when the door is fully closed and when the power is restored. A security device for an electrically operated door. In the first aspect, the mode switching means returns to the normal control mode based on the input of the opening command signal from the opening / closing operation tool when the mode is switched to the security control mode when the door is fully closed, and the security control is performed when the power failure is restored. A security device for an electric door that is configured to return to the normal control mode when the door is fully opened when switched to the mode. 3. The crime prevention apparatus for an electric door according to claim 1, wherein the mode switching means is configured to switch the mode after a predetermined time has elapsed since full closing and / or power failure recovery. 4. The switch detection sensor according to claim 1, wherein the rotation detection sensor of the switch is an encoder type sensor, and the count value of the rotation number of the motor shaft is stored in the volatile memory so that the count value disappears due to a power failure. A security device for electric doors that is configured in

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