JP3612237B2 - Lifting device for electric blind and control device for electric blind - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevating device for an electric blind that controls the slat elevating operation of the electric horizontal blind, the elevating operation of the curtain fabric of the electric pleat curtain or the electric hoisting curtain, and the elevating operation of the screen of the electric roll blind.
[0002]
[Prior art]
In recent years, electric blind control devices that control the operation of a large number of electric blinds installed on each floor of a building based on a preset program or a control signal generated by manual operation of the operating device have been put into practical use. ing.
[0003]
In such an electric blind, each electric blind is connected through a signal line, and the signal line is manually controlled by a central controller that automatically controls the operation of all the blinds and the operation of the blind for each specific area or group. An area switch controlled by operation is connected.
[0004]
When an operation signal is output from the central control device to each electric blind based on a program set in advance in the central control device, each electric blind uses a blind controller built in the head box based on the operation signal. The slats are moved up and down and the angle adjustment operation is automatically performed.
[0005]
Further, when the area switch is operated, an operation signal is output from the area switch to each electric blind in the area, and each electric blind performs a lifting / lowering operation and an angle adjustment operation based on the operation signal. .
[0006]
As manual operation means other than the area switch, there is an electric blind in which a remote control transmitter is set. In such an electric blind, for example, the area switch has a reception function of receiving a remote control signal output from the remote control transmitter. ing.
[0007]
When a remote control signal for controlling each electric blind in the area is output to a specific area switch by the operation of the remote control transmitter, the area switch that receives the remote control signal receives the remote control signal based on the remote control signal. Controls the operation of the electric blinds.
[0008]
Each of the electric blinds is provided with a blind controller in the head box, and the blind controller drives a slat raising / lowering motor or a slat angle adjusting motor based on the control signal to raise / lower the slats or the slats. Perform angle adjustment.
[0009]
[Problems to be solved by the invention]
In the electric blind as described above, when the slat is moved up and down based on the input of the operation signal, a constant motor drive voltage is supplied from the power supply unit in the blind controller to the slat lift motor, and based on the motor drive voltage. The slat raising / lowering motor operates to raise and lower the slats.
[0010]
However, due to variations in the characteristics of the motor itself or variations in the load acting on the motor from the slat lifting mechanism, variations in the lifting speed of each electric blind occur. There is a problem that the time required varies.
[0011]
In the electric blind described in Japanese Examined Patent Publication No. 4-16591, the rotational speed of the take-up drum that raises and lowers the lifting tape during the lifting and lowering operation of the slat is detected, and the detected rotational speed and a preset reference rotational speed are detected. And a configuration in which the electric motor is servo-controlled so that the rotation speed of the winding drum becomes a predetermined speed is disclosed.
[0012]
However, in such an electric blind, when servo control is activated at the time of activation, the power supplied to the electric motor increases rapidly until the rotation speed of the winding drum reaches a predetermined speed, and the rotation speed of the winding drum eventually increases. It becomes more than a predetermined speed.
[0013]
Next, until the rotation speed of the winding drum reaches a predetermined speed, the electric power supplied to the electric motor decreases rapidly, and the rotation speed of the winding drum eventually becomes lower than the predetermined speed. Thereafter, the power supplied to the electric motor increases again, and such an operation is repeated, so that the rotation speed of the winding drum converges to a predetermined speed.
[0014]
Therefore, there is a problem that it takes time until the rotational speed of the winding drum, that is, the ascending / descending speed of the slat is stabilized.
In order to solve such problems, the resolution of the detection device for detecting the rotation speed of winding is improved, and the calculation speed for calculating the power supplied to the electric motor based on the detected rotation speed is improved. It is necessary, but it causes an increase in cost.
[0015]
On the other hand, at the time of start-up, the rotational speed of the electric motor is rapidly changed so that the rotational speed of the winding drum becomes a predetermined speed in a short time while the grease filled as lubricant in the slat lifting mechanism is cooled and solidified. Since the motor is overloaded and a large load current flows through the motor, there is a problem that durability of the motor and the control circuit of the motor is lowered.
[0016]
An object of the present invention is to provide a lifting device for an electric blind that can quickly stabilize a lifting speed at a predetermined speed during a lifting operation of a shielding material.
It is another object of the present invention to provide a lifting device for an electric blind capable of improving durability while quickly stabilizing the lifting speed.
[0017]
[Means for Solving the Problems]
According to claim 1, in the electric blind which can rotate and drive the shielding material lifting shaft by a motor, can control the operation of the motor by a blind controller, and can move the shielding material up and down based on the rotation of the shielding material lifting shaft. In the ideal start-up voltage setting mode, the blind controller sets an ideal start-up voltage based on the power supply voltage supplied to the motor when the shielding material elevating shaft rotates at a predetermined rotation speed. A voltage setting unit, and a normal operation control unit that supplies the motor with the ideal starting voltage set by the ideal starting voltage setting unit as a power supply voltage in the normal operation mode, the ideal starting voltage setting unit, the lifting stroke of the shielding member for each subdivided subdivision ranges, setting the ideal starting voltage, the normal operation control unit, slat elevator Provided with a slow start voltage supply unit for supplying a slow start voltage obtained by stepping down the ideal start voltage at a predetermined rate to the motor for raising and lowering the slats for a predetermined time at the start of the operation. A setting switch unit that can set each parameter is provided, and the slow start voltage supply unit sets the slow start voltage based on the parameter .
[0018]
According to a second aspect of the present invention, the subdivision range is set in advance based on the number of pulses of an output signal of an encoder that converts the rotation of the lifting shaft of the shielding material into a pulse signal and outputs the pulse signal. This is recognized by comparing the number of pulses to be set with a preset number of pulses .
According to a third aspect of the present invention, the ideal starting voltage setting unit sets the ideal starting voltage in each of the lifting direction and the descending direction of the shielding material.
[0022]
According to a fourth aspect , the lifting and lowering operations of the plurality of electric blinds provided with the lifting device according to any one of the first to third aspects are collectively controlled by a common operation signal.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, many electric blinds 1 are connected by a common signal line 2 and are grouped into, for example, first to fourth areas A to D for each specific area.
[0024]
The electric blind 1 is supported by hanging a plurality of slats from a head box via a ladder cord and a lifting tape. Then, the slat can be moved up and down by rotating the slat lifting shaft disposed in the head box with a slat lifting motor 14 described later to raise and lower the lifting tape, and the angle adjustment with the slat angle adjusting motor 16 described later. By driving the device, the angle of each slat can be adjusted via the ladder cord.
[0025]
A personal computer 3 is connected to the signal line 2 as a central control device. The personal computer 3 is preset with a program for automatically controlling the blinds 1 in the respective areas A to D, and the personal computer 3 operating based on the program performs the slat raising / lowering operation and the slat angle adjusting operation of each blind 1. It is automatically controlled.
[0026]
Area switches 4a to 4d are connected to the signal line 2 for each of the first to fourth areas A to D, and the operation of the area switches 4a to 4d is prioritized over the control by the personal computer 3, and the blinds in the corresponding area or other areas The slat raising / lowering operation and the slat angle adjusting operation of the blind in the area can be controlled.
[0027]
A blind controller is disposed in the head box of each electric blind 1. Each blind controller has a function of receiving an operation signal output from the personal computer 3 or the area switches 4a to 4d, a signal analysis function of generating a blind operation control signal based on the received operation signal, and an operation control signal. Based on this, the slat lifting / lowering motor or the slat angle adjusting motor disposed in the head box is operated to detect the state of the slat opening / closing operation and the blind drive function for performing the slat lifting / lowering operation or the slat angle adjusting operation. And a state detection function for transmitting to the personal computer 3 or the area switches 4a to 4d.
[0028]
The area switches 4 a to 4 d can receive a remote control signal RS output from the remote control transmitter 5.
A blind controller 6 shown in FIG. 2 is disposed in the head box of each electric blind 1. A power supply unit 7 in the blind controller 6 supplies power to each circuit and motor of the electric blind 1.
[0029]
The input / output unit 8 in the blind controller 6 is connected to the CPU 9. An operation signal output from the personal computer 3 or the area switches 4a to 4d is input to the CPU 9 through the input / output unit 8. Further, a determination signal for determining the operating state of the electric blind 1 by the CPU 9 is output to the personal computer 3 or the area switches 4 a to 4 d via the input / output unit 8.
[0030]
The LED display unit 10 connected to the CPU 9 drives a light emitting diode exposed on the lower surface of the head box, and lights each light emitting diode based on a control signal output from the CPU 9.
[0031]
The EEPROM 11 connected to the CPU 9 includes area setting data for setting an area to which the electric blind 1 belongs, upper and lower limit values when the slat is raised and lowered, and rotation of the slat raising and lowering shaft during the slat constant speed raising and lowering operation. The speed and the power supply voltage value supplied to the slat lifting motor are stored.
[0032]
The setting switch unit 12 connected to the CPU 9 is composed of a dip switch exposed on the lower surface of the head box of the electric blind 1, and can set the blind address, blind type, product size, and remote control number. It is. The setting signal is input to the CPU 9.
[0033]
The first motor drive unit 13 connected to the CPU 9 supplies and drives a power supply voltage to the slat lifting motor 14 disposed in the head box based on a motor control signal output from the CPU 9.
[0034]
The second motor drive unit 15 connected to the CPU 9 drives a slat angle adjusting motor 16 disposed in the head box based on a motor control signal output from the CPU 9.
[0035]
The encoder 17 connected to the CPU 9 converts the rotation of the slat lifting shaft rotated by the slat lifting motor 14 in the head box into a pulse signal and outputs it to the CPU 9. And the rotation angle and rotation speed of the slat lifting shaft are detected.
[0036]
The upper limit switch 18 connected to the CPU 9 outputs a detection signal to the CPU 9 when the slat is pulled up to the upper limit.
The lower limit switch 19 connected to the CPU 9 detects slack in the slat lifting tape and outputs a detection signal to the CPU 9.
[0037]
The program storage unit 20 connected to the CPU 9 stores a program for controlling the operation of the blind controller 6. In particular, the slat lifting motor 14 is operated at a predetermined rotational speed during the initial operation of the electric blind. A program for setting a power supply voltage value, a program for maintaining the rotational speed of the slat raising / lowering motor 14 at a predetermined speed, and at the time of starting the slat raising / lowering operation, the slat raising / lowering motor 14 is slowed only for a predetermined time from the startup Stores the program to rotate with.
[0038]
In such a blind controller 6, the CPU 9 operates based on a program preset in the program storage unit 20, an operation signal input from the input / output unit 8, and data set in the EEPROM 11 and the setting switch unit 12. Then, the slat is moved up and down and the angle is adjusted.
[0039]
When an operation signal is input from one of the area switches 4a to 4d to the blind controller 6 of each electric blind 1 via the signal line 2 based on the operation of the remote control transmitter 5, the operation is performed in each electric blind 1. Only when the area number and the remote control number in the signal coincide with the preset area number and remote control number, the slat is moved up and down and the angle is adjusted.
[0040]
Then, the CPU 9 stops the operation of the slat raising / lowering motor 14 based on the count of the pulse signal output from the encoder 17 when the slat is raised / lowered to a preset blind opening.
[0041]
Further, the CPU 9 stops the operation of the slat lifting motor 14 in the slat pulling direction based on the detection signal of the upper limit switch 18 during the slat pulling operation, and the lower limit switch during the slat pulling operation or the slat lowering operation. Based on the detection signal 19, the operation of the slat lifting motor 14 is stopped.
[0042]
Next, the rotation speed control operation of the slat lifting motor 14 during the slat lifting operation of the electric blind 1 configured as described above will be described.
When the electric blind 1 is installed and the first raising / lowering operation is started, the CPU 9 in the blind controller 6 sets the power supply voltage supplied to the slat raising / lowering motor 14 in order to perform the slat raising / lowering operation at a predetermined speed. To start.
[0043]
As shown in FIG. 3, when the electric blind 1 is turned on and an up / down operation signal is input by operating the area switches 4a to 4d or the remote control transmitter 5 (step 1), the CPU 9 moves the slat up and down a predetermined amount. It is determined whether or not an ideal starting voltage for raising and lowering at a speed is set (step 2).
[0044]
Here, since the ideal starting voltage has not yet been set, the CPU 9 drives the first motor drive unit 13 to supply the power supply voltage from the power supply unit 7 to the slat lifting motor 14 and starts the slat lifting operation ( Step 3).
[0045]
Next, the CPU 9 determines whether or not the signal from the encoder 17 is input, that is, whether or not the slat lifting shaft is normally rotated based on the supply of power to the slat lifting motor 14 (step 4). .
[0046]
When the signal from the encoder 17 is not input for 100 ms, the CPU 9 determines that the slat lifting shaft is not normally rotated (step 5), and stops the supply of power to the slat lifting motor 14 ( Step 6).
[0047]
In step 4, when a signal is normally input from the encoder 17, the CPU 9 starts the ideal starting voltage setting operation shown in FIG. 4 and first detects the rotation speed of the slat lifting shaft based on the output signal of the encoder 17. (Step 7).
[0048]
Next, the CPU 9 determines whether or not the rotation speed of the slat lifting shaft is, for example, 40 rotations per minute (step 8). If it is 40 revolutions or less, the power supply voltage supplied to the slat lifting motor 14 is raised (steps 9 and 10). If it is 40 revolutions or more, the power supply voltage supplied to the slat lifting motor 14 is increased. Pull down (steps 9 and 11) to converge the rotational speed of the slat lifting shaft to 40 revolutions per minute.
[0049]
When the rotation speed of the slat raising / lowering shaft reaches 40 revolutions per minute, the CPU 9 determines whether or not the raising / lowering in the range where the slat raising / lowering stroke is subdivided into a plurality of parts is completed (step 12).
[0050]
This subdivision range is set in advance based on the number of pulses of the output signal of the encoder 17, and the subdivision range is determined by comparing the number of pulses counted during the raising / lowering operation with the preset number of pulses. It comes to recognize.
[0051]
The reason for setting such a subdivision range is as follows. During the lifting operation of the slats, the slats supported by the ladder cord are sequentially stacked on the bottom rail, and the bottom rail is a lifting tape that is wound up by the slat lifting shaft. Pulled up. Further, when the lifting tape is wound around the slat lifting shaft, the winding diameter gradually increases.
[0052]
For this reason, the load acting on the slat raising / lowering motor 14 increases as the bottom rail rises. Therefore, the slat lifting stroke is subdivided, and an ideal starting voltage to be supplied to the slat raising / lowering motor is set for each division range. I am doing so.
[0053]
Further, when the slat is lowered, the bottom rail is lowered, and the slats stacked on the bottom rail are sequentially supported by the ladder cord. Further, when the lifting tape is rewound from the slat lifting shaft, the winding diameter gradually decreases.
[0054]
For this reason, since the load acting on the slat lifting motor 14 decreases as the bottom rail descends, the slat descending stroke is subdivided, and the ideal starting voltage supplied to the slat lifting motor is set for each divided range. Like to do.
[0055]
In step 12, when one subdivision range is completed, the CPU 9 detects the peak value of the power supply voltage supplied to the slat raising / lowering motor within the subdivision range (step 13), and the peak value is detected when the motor is started. An ideal starting voltage is calculated by adding a margin, and the calculated value is stored in the EEPROM 11 (step 14).
[0056]
Then, the CPU 9 determines whether or not the ideal starting voltages of all subdivision ranges in the slat pulling direction and the descending direction have been calculated (step 15), and steps until the ideal starting voltages of all subdivision ranges are calculated. Repeat steps 8-15.
[0057]
When the ideal starting voltages for all the subdivision ranges are calculated, the CPU 9 finishes the ideal starting voltage calculation operation (step 15), goes to step 17 shown in FIG. It will be in the state to perform.
[0058]
In step 16, the CPU 9 reads the parameters set by the setting switch unit 12, and waits for the input of an operation signal for performing the slat lifting operation (step 17). In the setting switch section 12, data indicating the type of blind such as the slat width or material, the pitch of the ladder code, and whether it is for an inclined window or a skylight is set as a parameter.
[0059]
When an operation signal for performing a slat pulling operation or a slat lowering operation is input, the CPU 9 sets an ideal starting voltage corresponding to the ascending / descending direction of the slat and the blind opening from the ideal starting voltage calculated in step 14 to the EEPROM. (Step 18).
[0060]
Next, the CPU 9 calculates a slow start voltage based on the read ideal start voltage, and supplies the voltage value to the slat lifting motor 14 via the first motor drive unit 13 (step 19).
[0061]
The slow start voltage is set to a voltage value of 50% to 90% of the ideal start voltage based on the parameter. And when the fluidity of grease is not sufficient at the time of starting the slat lifting operation, the starting voltage is suppressed so that no overload current flows to the slat lifting motor.
[0062]
Next, the CPU 9 determines whether or not the signal from the encoder 17 is input, that is, whether or not the slat lifting shaft is normally rotated based on the supply of the slow start voltage to the slat lifting motor 14 (step). 20).
[0063]
When the signal from the encoder 17 is not input for 100 ms, the CPU 9 determines that the slat lifting shaft is not normally rotated (step 21), and stops the supply of power to the slat lifting motor 14 ( Step 22).
[0064]
In step 20, if the signal is normally input from the encoder 17, the CPU 9 proceeds to step 23 shown in FIG. 6 and determines whether 200 ms has passed since the start of the supply of the slow start voltage.
[0065]
When 200 ms elapses and the fluidity of the grease is improved, the CPU 9 starts detecting the rotational speed of the slat lifting shaft based on the output signal of the encoder 17 (step 24), and then moves to the slat lifting motor. The supply of the ideal starting voltage in the slat pulling direction or the descending direction is started (step 25).
[0066]
Next, when the slat lifting shaft is rotated at 40 revolutions per minute based on the ideal starting voltage, the CPU 9 applies the ideal starting voltage to the slat lifting motor 14 until an operation signal for stopping the slat lifting operation is input. (Steps 26 and 27), when the operation signal is input, the supply of the ideal starting voltage is stopped (step 28), and the lifting operation is stopped.
[0067]
In step 26, if the rotation speed of the slat lifting shaft is 40 rotations or less per minute, the CPU 9 increases the voltage supplied to the slat lifting motor 14 (steps 29 and 30). In the case of 40 revolutions per minute or more, the CPU 9 lowers the voltage supplied to the slat raising / lowering motor 14 (steps 29 and 31) and returns to step 26.
[0068]
Therefore, even if the rotational speed of the slat lifting shaft slightly deviates from 40 rotations per minute while supplying the ideal starting voltage, the rotation speed quickly converges to 40 rotations per minute.
In the slat lifting device of the electric blind 1 configured as described above, the following operational effects can be obtained.
[0069]
(1) During the first slat lifting operation, the power supply voltage of the slat lifting motor 14 required for rotating the slat lifting shaft at 40 revolutions per minute can be set as the ideal starting voltage.
[0070]
(2) The ideal starting voltage can be set in each slat lifting direction and slat descending direction in each range obtained by subdividing the slat lifting stroke, so that it acts on the slat lifting shaft as the blind opening changes. Even if the load changes, an optimum ideal starting voltage can be set in each divided range.
[0071]
(3) Since the ideal starting voltage can be calculated using a parameter corresponding to the type of blind, an optimal ideal starting voltage can be set according to the type of blind.
[0072]
(4) Since a parameter corresponding to the type of blind is set by the setting switch unit 12 and the ideal starting voltage can be set using the parameter, the blind controller 6 common to various blinds can be attached. it can.
[0073]
(5) Since the slow starting voltage lower than the ideal starting voltage can be supplied for 200 ms at the start of the slat lifting operation, it is possible to prevent the occurrence of an overcurrent flowing through the motor when the slat lifting motor 14 is started. The durability of the lifting device can be improved.
[0074]
(6) By setting the ideal starting voltage, the rotational speed of the slat lifting shaft is quickly stabilized at 40 rotations per minute during the slat lifting operation regardless of variations in the characteristics of the slat lifting motor 14 and variations in the slat lifting mechanism. be able to.
[0075]
(7) By setting ideal start-up voltages for the electric blinds 1 in the areas A to D, when the electric blinds 1 are operated all at once, the ascending / descending speeds of the electric blinds 1 are made to coincide with each other. The required time can be matched and the aesthetics of the raising / lowering operation can be improved.
[0076]
The above embodiment can be modified as shown below.
The rotational speed of the slat lifting shaft during the slat lifting operation may be set to an arbitrary speed other than 40 rotations per minute.
-One ideal starting voltage may be set for the entire range of the slat lifting stroke without setting the ideal starting voltage for each subdivision range.
-You may make it perform slat raising / lowering operation and slat angle adjustment operation with one motor.
-You may operate the said electric blind 1 in the state which became independent one by one.
-With the blind controller as described above, pleated curtains and hoisting curtains that can raise and lower the curtain fabric with an electric motor, or roll blinds that can move the winding shaft with an electric motor to move the screen up and down You may make it control.
[0077]
【The invention's effect】
As described in detail above, the present invention can provide a lifting device for an electric blind that can quickly stabilize the lifting speed to a predetermined speed during the lifting operation of the shielding material.
[0078]
Moreover, the raising / lowering apparatus of the electric blind which can aim at the improvement of durability can be provided, stabilizing the raising / lowering speed rapidly.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a control device for an electric blind.
FIG. 2 is a block diagram showing an electrical configuration of a blind controller.
FIG. 3 is a flowchart showing the operation of the blind controller.
FIG. 4 is a flowchart showing the operation of the blind controller.
FIG. 5 is a flowchart showing the operation of the blind controller.
FIG. 6 is a flowchart showing the operation of the blind controller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electric blind 6 Blind controller 9 Ideal starting voltage setting part, normal operation control part (CPU)
11 Ideal start-up voltage setting unit, normal operation control unit (EEPROM)
14 Motor (motor for raising and lowering slats)
17 Ideal start-up voltage setting unit, normal operation control unit (encoder)

Claims (4)

In the electric blind that can rotate and drive the shielding material raising and lowering shaft with a motor, can control the operation of the motor with a blind controller, and can move the shielding material up and down based on the rotation of the shielding material raising and lowering shaft,
In the blind controller,
In the ideal starting voltage setting mode, when the shielding material lifting shaft rotates at a predetermined rotation speed, an ideal starting voltage setting unit that sets an ideal starting voltage based on a power supply voltage supplied to the motor;
A normal operation control unit that supplies the ideal starting voltage set by the ideal starting voltage setting unit as a power supply voltage to the motor in a normal operation mode;
The ideal starting voltage setting unit sets the ideal starting voltage for each subdivision range obtained by subdividing the lifting / lowering stroke of the shielding material ,
The normal operation control unit includes a slow start voltage supply unit that supplies a slow start voltage obtained by stepping down the ideal start voltage at a predetermined rate to the slat lift motor for a predetermined time when the slat lift operation is started. ,
The blind controller is provided with a setting switch unit that can set parameters for each type of blind, and the slow start voltage supply unit sets the slow start voltage based on the parameters. Lifting device. The subdivision range is set in advance based on the number of pulses of the output signal of the encoder that converts the rotation of the shielding material lifting shaft into a pulse signal and outputs the pulse signal. The lifting device for an electric blind according to claim 1, wherein the lifting device is recognized by comparing with a preset number of pulses. The lifting device for an electric blind according to claim 1 or 2, wherein the ideal starting voltage is set in each of a lifting direction and a descending direction of the shielding material. A plurality of the elevating operation of the electric blind, a common operation signal collectively controlling the control device to that conductive kinematic blind, characterized in that with the lifting device according to any one of claims 1 to 3.

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