JP4524781B2 - Electric shutter control method and apparatus - Google Patents

Description

The present invention relates to a method and apparatus for controlling an electric shutter, and more particularly to setting of upper and lower limit positions of an electric shutter.

The electric shutter device has a control device that automatically stops the shutter curtain at the upper limit position and the lower limit position. An example of such a control device will be described. A rotary encoder is attached to an opening / closing device that opens and closes the shutter curtain, and the maximum movement amount of the shutter curtain is stored in the ROM of the microcomputer, and pulses output from the rotary encoder are counted with the upper limit position or the lower limit position as the origin position. When the count value matches the value corresponding to the origin position and the value corresponding to the maximum movement amount, it is determined that the shutter curtain has reached the upper and lower limit positions, and the switch is automatically stopped. The origin position data is set by stopping the shutter curtain at the upper limit position or the lower limit position when the shutter is installed on the site, and operating the setting switch to store it in the microcomputer RAM.

However, since the origin position data is lost when a power failure occurs, it is necessary to manually set the upper and lower limit positions again. Patent Document 1 discloses a control device for an electric shutter that can automatically set origin position data, and the number of pulses generated from pulse generation means that generates pulses in accordance with the rotation of the switch. When the shutter curtain has reached one of the upper and lower limit positions based on the counted pulse, it is determined that the shutter curtain has reached one of the upper and lower limit positions. Control means for setting a value corresponding to the position determined based on the count value and controlling the switch based on the count value of the count means, the value set by the setting means and the maximum movement amount stored in the storage means Is described.

In Patent Document 1, when resetting after a power failure, if the number of pulses for overload detection is equal to or less than a predetermined value, it is determined that the shutter curtain has reached the upper limit position or the lower limit position, and stored as origin position data. The upper limit position (lower limit position) and the lower limit position (upper limit position) are set from the stored origin position data and the maximum movement amount. The upper limit position (lower limit position) set by the overload detection pulse ) Is registered at the wrong position for some reason, the lower limit position (upper limit position) is set based on the misrecognized position, and the upper limit position and the lower limit position may be registered at the wrong position. There is sex. For example, if the shutter curtain hits an obstacle while the shutter curtain is descending, an overload is detected and the lower limit position is set above the fully closed position. Furthermore, an upper limit position is also set based on a position above the actual fully closed position. Therefore, when the opening is closed, the driving of the shutter curtain is stopped before the shutter curtain is fully closed, and when the opening is opened, the shutter curtain is further overrun from the actual upper limit position.
Utility model registration No. 2543458

An object of the present invention is to provide an electric shutter control device in which the upper or lower limit position of the shutter curtain is not registered at an incorrect position even when the power is restored from a power failure. .

The technical means adopted by the present invention in order to achieve such a problem are as follows:
A first step of raising or lowering the shutter curtain by raising or lowering operation ;
A second step of detecting overload detection in the ascending or descending shutter curtain and temporarily storing the detected position as an upper limit position or a lower limit position of the shutter curtain;
And lowering or raising continuously shutter curtain by raised or lowered operation from the detected upper limit position or lower limit position, and a third step that detect the continuous movement of the shutter curtain,
Third and continuous movement of the shutter curtain has been detected have you to step, the maximum amount of movement of the shutter curtain which is stored in advance, by comparing the maximum amount of movement of the continuous movement amount shutter curtain of the shutter curtain and a fourth step of judging whether the corresponding to,
If it is determined that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount, the temporarily stored upper limit position or lower limit position is set as the upper limit position or lower limit position, and the continuous movement amount of the shutter curtain is the maximum movement amount. If it is determined that the upper limit position or the lower limit position is temporarily stored, the first step to the fourth step are performed until it is determined that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount. An electric shutter control method characterized by repetition .

Other technical means adopted by the present invention are:
Drive means for moving the shutter curtain up and down by ascending or descending operation ;
Overload detection means for detecting overload of the drive means;
Position storage means for detecting and storing the position of the shutter curtain;
A movement amount detecting means for detecting a movement amount of the shutter curtain;
Nonvolatile storage means for storing the maximum amount of movement of the shutter curtain;
Comparison determination means for comparing and determining the detected movement amount of the shutter curtain and the stored maximum movement amount of the shutter curtain;
An electric shutter control device comprising:
The overload detecting means detects an overload in a shutter curtain that is raised or lowered by the driving means;
The position storage means temporarily stores the position where the overload is detected as the upper limit position or the lower limit position of the shutter curtain,
The movement amount detecting means detects a continuous movement amount in which the shutter curtain is continuously lowered or raised by lowering or raising the shutter curtain by the driving means,
The comparison determination unit compares the detected continuous movement amount with the maximum movement amount stored in the nonvolatile storage unit, so that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount of the shutter curtain. Determine whether or not to
When the comparison determination unit determines that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount, the control device sets the temporarily stored upper limit position or lower limit position as the upper limit position or lower limit position, When the comparison / determination unit determines that the continuous movement amount of the shutter curtain is less than the maximum movement amount, the upper limit position or the lower limit position temporarily stored is discarded, and the shutter curtain continuously moves by the comparison / determination unit. Until it is determined that the amount corresponds to the maximum movement amount, the drive means raises or lowers the shutter curtain, the overload detection means detects the overload, and the position storage means detects the position where the overload is detected. , Detection of the continuous movement amount of the shutter curtain by the movement amount detection means, shutter by the comparison determination means Comparison determination of the continuous movement and the maximum movement amount of the shutter curtain of the curtain, is characterized in that it is configured to repeat the.

The present invention sets the position by actually moving the shutter curtain by the maximum movement amount, and in particular, when setting the upper and lower limit positions after recovery from a power failure, the upper limit position and / or the lower limit position of the shutter curtain. Is not set at the wrong position. Furthermore, according to the present invention, when the shutter curtain upper and lower limits are reset after a power failure, the user can set the upper and lower limits accurately in the course of normal operation without special awareness. Even if the upper and lower limit positions are not determined, the driving of the shutter curtain stops due to an overload at the true upper and lower limit positions, so that no trouble occurs in normal operation.

In FIG. 1, a shutter device installed in a building opening includes a shutter curtain 1, a winding shaft 2 to which the upper end of the shutter curtain 1 is connected, and an opening / closing device 3 that drives the winding shaft 2 to open and close. The opening / closing machine 3 has a stepping motor 4 as drive means, and connects the rotation shaft of the stepping motor 4 and the winding shaft 2 to transmit the rotation of the rotation shaft of the stepping motor 4 to the winding shaft 2. By rotating the winding shaft 1 forward and backward, the shutter curtain 1 is wound around the winding shaft 2, or when the shutter curtain 1 is fed out from the winding shaft 2, the shutter curtain 1 moves up and down while being guided by the left and right guide rails 5 Open and close the opening.

The opening / closing drive of the shutter device is performed by a command from the switch box 6. A command from the switch box 6 is transmitted to the switch 3 via the control unit 7. The switch box 6 is provided with push button type operation switches PBU, PBS and PBD for raising, lowering and stopping. When the up button PBU is pressed, a shutter up signal is transmitted to the open / close control circuit of the control unit 7, a motor drive current is supplied to the motor 4 of the open / close machine 3, and the motor 4 rotates to wind the shutter curtain 1. Take up around the take-up shaft 2. When the lowering button PBD is pressed, a shutter lowering signal is transmitted to the opening / closing control circuit of the control unit 7, a motor driving current is supplied to the motor 4 of the opening / closing machine 3, the motor 4 rotates, and the shutter curtain 1 is wound. It is fed out from the take-up shaft 2. When the stop button PBS is pressed, the control unit 7 cuts off the supply of the motor driving current to the motor 4 and stops the rotation of the motor 4.

The control unit 7 includes a microcomputer, the microcomputer includes a CPU and a storage unit, and the IC memory constituting the storage unit further includes a ROM and a RAM. The driving of the stepping motor 4 is controlled by a microcomputer. That is, the stepping motor outputs a predetermined driving torque (switch output) by sending a predetermined driving current controlled by the microcomputer to the motor. The control unit 7 includes nonvolatile storage means (which may be configured by the ROM), and the nonvolatile storage means stores the maximum movement amount of the shutter curtain. In one aspect, the maximum movement amount of the shutter curtain is stored as the number of pulses corresponding to the maximum movement amount of the shutter curtain.

The shutter control device according to the present invention includes a drive unit that moves the shutter curtain up and down, an overload detection unit that detects an overload of the shutter curtain, a position storage unit that detects and stores the position of the shutter curtain, and a shutter Comparison of movement amount detection means for detecting the movement amount of the curtain, non-volatile storage means for storing the maximum movement amount of the shutter curtain, and comparison determination for comparing the detected movement amount of the shutter curtain and the stored maximum movement amount of the shutter curtain Determination means. In one embodiment, the shutter curtain driving means is a stepping motor. In this case, the overload detecting means uses stepping motor step-out in one embodiment. That is, the overload is detected by the step-out using the characteristic of the stepping motor that steps out when the load exceeds the motor output. Of course, the drive means and overload detection to which the present invention is applied are not limited to stepping motors and stepping motor step-outs, but other DC motors, AC motors, etc. can be employed. The overload state may be detected by an overload detection means, for example, a change in the motor current value or a decrease in the rotation speed of the motor (change in the pulse interval from the encoder).

The shutter curtain position detection means will be described. A rotary encoder is attached to the rotating shaft of the motor constituting the switch, and the number of pulses output according to the rotation of the rotating shaft is counted by the counting means, and the count value is stored in the storage unit. . By counting and storing pulses output from the rotary encoder with the upper limit position or lower limit position of the shutter curtain as the origin position, the position of the shutter curtain is detected by the count value. Further, the number of pulses corresponding to the maximum movement amount of the shutter curtain may be acquired from the origin position and the count value of the upper limit position or the lower limit position. The data of the origin position is stored in the microcomputer RAM by operating the setting switch by stopping the shutter curtain at the upper limit position or the lower limit position when the shutter is installed in the building opening.

The upper limit position or the lower limit position of the shutter curtain is detected by detecting an overload when the shutter curtain comes into contact with a lintel above the opening or a drainer below the opening when the shutter curtain is raised or lowered. Do that. In one aspect, the overload detection means detects the stepping motor built in the switch due to overload. Alternatively, the overload state may be detected by a change in the current value of the motor or a decrease in the rotation speed of the motor (change in the pulse interval from the encoder).

At the initial setting of the shutter, the upper limit position and the lower limit position of the shutter curtain are set. The upper limit position and the lower limit position of the shutter curtain are stored in the storage unit as the number of pulses corresponding to each position. Further, the maximum movement amount of the shutter curtain is calculated as the number of pulses by setting the upper and lower limit positions, and the calculated maximum movement amount is stored in the nonvolatile storage means. By storing the upper limit position and lower limit position of the shutter curtain in the storage unit as the corresponding pulse numbers, the upper limit position and the lower limit position are determined based on the pulse number by detecting the number of pulses when the shutter curtain is opened and closed under normal circumstances. To stop the power supply to the motor. That is, when the count value matches the value corresponding to the origin position and the value corresponding to the maximum movement amount, it is determined that the upper / lower limit position has been reached, and the drive current supply to the motor is stopped.

In one aspect, the means for detecting the movement amount of the shutter curtain detects the continuous movement amount of the shutter curtain based on the number of pulses by counting the number of pulses continuously generated from the encoder when the shutter curtain moves.

The comparison determination unit is configured by a control unit of a microcomputer. The comparison determination unit compares the continuous movement amount of the shutter curtain detected by the movement amount detection unit and the maximum movement amount of the shutter curtain stored in the nonvolatile storage unit, and the continuous movement amount corresponds to the maximum movement amount. It is determined whether or not. When it is determined that the continuous movement amount corresponds to the maximum movement amount, the position where the continuous movement starts is stored in the storage unit as the upper limit position (or lower limit position) and set as the upper limit position (or lower limit position). The Further, when the continuous movement amount reaches the maximum movement amount, the current supply to the motor is stopped and the driving of the shutter curtain is stopped.

Control of the shutter after a power failure using such a control device will be described with reference to FIG. When the shutter device is in the normal mode and the power supply to the shutter device is interrupted due to a power failure, the position data (number of pulses) of the shutter curtain stored in the RAM disappears. On the other hand, since the maximum amount of movement of the shutter curtain is stored in the non-volatile storage means, the maximum amount of movement data will not be lost due to a power failure.

When the open switch is operated after the power is turned on again, an ascending signal is transmitted and the shutter curtain is raised. When an overload is detected in the rising shutter curtain, the position where the overload is detected is temporarily stored in the storage unit as an upper limit position (temporary registration), and the shutter curtain is lowered again. The moving amount (operation stroke) of the descending shutter curtain is detected, it is determined whether or not the detected moving amount corresponds to the maximum moving amount stored in the nonvolatile storage means, and it is determined that it is the maximum moving amount. In such a case, the temporarily stored upper limit position is formally stored and set as the upper limit position (main registration), and the shutter curtain is operated in the normal mode. The lower limit position can be calculated from the upper limit position and the maximum movement amount, and the calculated position can be stored and set as the lower limit position.

If it is determined that the shutter curtain lowering amount is less than the maximum moving amount stored in the non-volatile storage means (including when the stop button or the up button is pressed during the lowering), it is temporarily stored. The upper limit position data is discarded and the shutter operation is performed again. For example, when an open switch operation is performed, the shutter curtain rises. When an overload is detected in the rising shutter curtain, the position is temporarily stored as the upper limit position, and the shutter curtain is lowered again. Perform the operation. The moving amount (operation stroke) of the descending shutter curtain is detected, and it is determined whether the detected moving amount is the maximum moving amount. This operation is repeated until it is determined that the movement amount of the shutter curtain corresponds to the maximum movement amount.

When the closing switch is operated after the power is turned on again, a lowering signal is transmitted and the shutter curtain is lowered. When an overload is detected in the descending shutter curtain, the position where the overload is detected is temporarily stored in the storage unit as a lower limit position (temporary registration), and the shutter curtain is raised again. The moving amount (operation stroke) of the rising shutter curtain is detected, it is determined whether the detected moving amount is the maximum moving amount, and if it is determined that it is the maximum moving amount, the lower limit position temporarily stored Is formally stored and the lower limit position is set (main registration), and the shutter curtain is operated in the normal mode. The upper limit position can be calculated from the lower limit position and the maximum movement amount, and the calculated position can be stored and set as the upper limit position.

If it is determined that the shutter curtain ascending amount is less than the maximum moving amount (including when the stop button or descending button is pressed during ascending), the temporarily stored lower limit position data is discarded, The shutter operation is performed again. For example, when a closing switch operation is performed, the shutter curtain is lowered, and when an overload is detected in the descending shutter curtain, the position is temporarily stored as a lower limit position, and the shutter curtain is raised again. Perform the operation. The moving amount (operation stroke) of the rising shutter curtain is detected, and it is determined whether the detected moving amount is the maximum moving amount. This operation is repeated until it is determined that the movement amount of the shutter curtain corresponds to the maximum movement amount.

As described above, in the present invention, the position where the continuous movement starts is set as the upper limit position or the lower limit position only when the shutter curtain can actually move continuously by an amount corresponding to the maximum movement amount. In the subsequent setting of the upper and lower limit positions of the shutter curtain, the upper limit position and / or the lower limit position of the shutter curtain is not set at an incorrect position. Furthermore, according to the present invention, when the shutter curtain upper and lower limits are reset after a power failure, the user can set the upper and lower limits accurately in the course of normal operation without special awareness. Even if the upper and lower limit positions are not determined, the driving of the shutter curtain stops due to an overload at the true upper and lower limit positions, so that no trouble occurs in normal operation.

When setting the upper and lower limit positions of the shutter curtain after a power failure, a drive current is supplied to the motor so that the motor output is larger than the motor output during normal opening and closing. The torque margin is set as small as possible with respect to the motor load during normal opening and closing, but a slight load is not detected as an overload when the upper and lower limits are set. In addition, the motor load may increase due to the use of the shutter at the time of resetting after use as compared with the time of initial initial setting.

In the present invention, when it is determined that the continuous movement amount corresponds to the maximum movement amount, the continuous movement amount and the maximum movement amount may not necessarily match. In another aspect of the present invention, even when the continuous movement amount is slightly smaller or larger than the maximum movement amount, it is determined that it corresponds to the maximum movement amount. For example, if the number of pulses corresponding to the maximum movement amount is set as a predetermined range (number of pulses of maximum movement amount ± α), and there is a pulse number of continuous movement amount within the predetermined range (pulse at the time of overload detection) It is determined that the continuous movement amount corresponds to the maximum movement amount). Further, in this case, the maximum movement amount may be rewritten and updated based on the detected continuous movement amount. In this way, even when the shutter curtain expands and contracts in the process of opening and closing over many times due to long-term use, the change can be followed.

In the present invention, overload is detected based on the count value of the number of pulses, but the electric shutter is controlled using a count value slightly increased or decreased from the actual count value determined to be the upper and lower limits due to overload. May be.

The present invention can be used for setting the upper and lower limit positions of a shutter after a power failure in an electric shutter.

It is the schematic which shows the whole structure of an electric shutter apparatus. It is a flowchart which shows the setting of the upper / lower limit position of the shutter curtain after a power failure return.

Explanation of symbols

1 Shutter curtain 3 Opening and closing machine 7 Control unit

Claims (2)

A first step of raising or lowering the shutter curtain by raising or lowering operation ;
A second step of detecting overload detection in the ascending or descending shutter curtain and temporarily storing the detected position as an upper limit position or a lower limit position of the shutter curtain;
And lowering or raising continuously shutter curtain by raised or lowered operation from the detected upper limit position or lower limit position, and a third step that detect the continuous movement of the shutter curtain,
Third and continuous movement of the shutter curtain has been detected have you to step, the maximum amount of movement of the shutter curtain which is stored in advance, by comparing the maximum amount of movement of the continuous movement amount shutter curtain of the shutter curtain and a fourth step of judging whether the corresponding to,
If it is determined that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount, the temporarily stored upper limit position or lower limit position is set as the upper limit position or lower limit position, and the continuous movement amount of the shutter curtain is the maximum movement amount. If it is determined that the upper limit position or the lower limit position is temporarily stored, the first step to the fourth step are performed until it is determined that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount. An electric shutter control method characterized by repeating . Drive means for moving the shutter curtain up and down by ascending or descending operation ;
Overload detection means for detecting overload of the drive means;
Position storage means for detecting and storing the position of the shutter curtain;
A movement amount detecting means for detecting a movement amount of the shutter curtain;
Nonvolatile storage means for storing the maximum amount of movement of the shutter curtain;
Comparison determination means for comparing and determining the detected movement amount of the shutter curtain and the stored maximum movement amount of the shutter curtain;
An electric shutter control device comprising:
The overload detecting means detects an overload in a shutter curtain that is raised or lowered by the driving means;
The position storage means temporarily stores the position where the overload is detected as the upper limit position or the lower limit position of the shutter curtain,
The movement amount detecting means detects a continuous movement amount in which the shutter curtain is continuously lowered or raised by lowering or raising the shutter curtain by the driving means,
The comparison determination unit compares the detected continuous movement amount with the maximum movement amount stored in the nonvolatile storage unit, so that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount of the shutter curtain. Determine whether or not to
When the comparison determination unit determines that the continuous movement amount of the shutter curtain corresponds to the maximum movement amount, the control device sets the temporarily stored upper limit position or lower limit position as the upper limit position or lower limit position, When the comparison / determination unit determines that the continuous movement amount of the shutter curtain is less than the maximum movement amount, the upper limit position or the lower limit position temporarily stored is discarded, and the shutter curtain continuously moves by the comparison / determination unit. Until it is determined that the amount corresponds to the maximum movement amount, the drive means raises or lowers the shutter curtain, the overload detection means detects the overload, and the position storage means detects the position where the overload is detected. , Detection of the continuous movement amount of the shutter curtain by the movement amount detection means, shutter by the comparison determination means Comparison determination of the continuous movement and the maximum movement amount of the shutter curtain curtain, the control device for an electric shutter, characterized in that it is configured to repeat the.

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