JPH0746875A - Motor curtain driver - Google Patents

Abstract

PURPOSE:To provide a motor curtain driver for allowing smooth open/close operation of a curtain without relying on the weight of the curtain. CONSTITUTION:The motor curtain driver comprises a drive source, i.e., a motor, for open/close operation of a curtain having one movable end in the horizontal direction, means 12 for presetting the opening/closing speed of the curtain, means 9 for detecting the position and opening/closing speed of the curtain, and a motor control means 10 including an operational processing section 17 for controlling the motor to match a detected speed substantially with a set speed and calculating a command value for the motor based on a set speed, a detected speed, and a control constant, and means 20 for detecting the weight of the curtain, wherein the control constants being used at the operational processing section 17 varies depending on the weight of the curtain.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric curtain drive device for controlling opening / closing of a curtain.

[0002]

2. Description of the Related Art As a conventional electric curtain drive device,
There is one proposed by the applicant of the present application in Japanese Patent Application No. 5-074819. This is a motor that is a drive source for opening and closing operation of the curtain, one end side of which in the horizontal direction is movable, and speed setting means for presetting the opening and closing speed of the curtain,
A position / speed detecting means for detecting the position and opening / closing speed of the curtain, and a motor control means for controlling the motor so that the detected speed matches the set speed. The motor control means has an arithmetic processing unit that calculates a command value to the motor from the set speed, the detected speed, and the control constant. Further, the control constant used to calculate the command value is adapted to change according to the set speed.

The calculation of the command value to the motor by the arithmetic processing unit will be specifically described. First, the detected speed detected by the position / speed detecting means and the set speed set by the speed setting means are compared, Calculate the speed difference. Then, a control constant corresponding to the set speed is applied to the speed difference to calculate a command value for the motor. In this way, when calculating the command value to the motor, by using the control constant according to the set speed, a more appropriate command value is given to the motor than when using the control constant that is constant and invariant regardless of the set speed. The curtain can be opened and closed smoothly.

[0004]

However, the above-mentioned ones are slightly insufficient for smoothing the opening / closing operation of the curtain. That is, since the weight of the curtain is not taken into consideration, if the curtain is extremely heavy or light, the command value given to the motor may be inappropriate, and the smooth opening / closing operation of the curtain may be impaired. There is.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric curtain drive device capable of smoothly performing opening and closing operations of a curtain regardless of the weight of the curtain. .

[0006]

In order to achieve the above object, an electric curtain drive device according to a first aspect of the present invention is provided with a motor, which is a drive source for opening and closing the curtain, one end side of which in the horizontal direction is movable, and a curtain. A speed setting means for presetting the opening / closing speed of the, a position / speed detecting means for detecting the position and opening / closing speed of the curtain, and a motor for controlling the detected speed to substantially match the set speed, In an electric curtain drive device including a motor control unit having a calculation processing unit that calculates a command value to the motor from a set speed, a detection speed, and a control constant, a weight detection unit that detects the weight of the curtain is provided, and the motor The control constant used in the arithmetic processing unit of the control means changes depending on the weight of the curtain.

According to a second aspect of the present invention, there is provided the electric curtain drive device according to the first aspect, wherein the weight detecting means outputs the output voltage when the one end side of the curtain has passed a predetermined position near the end of the curtain rail in the moving direction. The curtain weight is detected from the value.

The electric curtain drive device according to a third aspect of the present invention is configured such that the predetermined position according to the second aspect is set differently depending on whether the curtain is opened or closed.

According to a fourth aspect of the present invention, in the electric curtain drive device according to the first aspect, the weight detecting means determines the curtain from the output voltage value at each position when the one end side of the curtain passes through a plurality of predetermined positions. Is configured to detect the weight of.

Further, in the electric curtain drive device according to a fifth aspect of the present invention, the weight detecting means according to the first aspect is the curtain from a moving time when the one end side of the curtain is moved by a predetermined distance with a constant output voltage value. Is configured to detect the weight of.

Further, in the electric curtain drive device according to claim 6, the weight detecting means according to claim 1 is configured to detect the weight by actually measuring the weight of the curtain.

The electric curtain drive device according to a seventh aspect of the present invention has a configuration in which a reset switch is provided so that the stored contents of the detection result of the weight detection means according to the first to sixth aspects can be arbitrarily reset.

Further, in the electric curtain drive device according to an eighth aspect, the weight detection means according to the first to sixth aspects constantly detects the weight of the curtain, and when the weight of the curtain changes by a predetermined amount or more, the weight detection result is obtained. The memory status of is automatically updated.

[0014]

According to the structure of the first aspect, since the control constant used for calculating the command value to the motor changes depending on the weight of the curtain, the command value in consideration of the weight of the curtain is calculated.

According to the structure of claim 2, in addition to the operation of claim 1, the output voltage value when one end side of the curtain in the horizontal direction passes a predetermined position near the end of the curtain rail, that is, Since the weight of the curtain is detected and stored from the output voltage value for moving substantially the entire curtain, it is not necessary to actually measure the weight of the curtain.

According to the third aspect of the invention, in addition to the operation of the second aspect, the way of setting the predetermined position near the end of the curtain rail is different between when the curtain is opened and when it is closed. Therefore, the error between the detected weight of the curtain when the opening operation is performed and the detected weight of the curtain when the closing operation is performed is reduced.

According to the structure described in claim 4, in addition to the operation described in claim 1, the weight detecting means has the motor at each position when one end side in the horizontal direction of the curtain passes through a plurality of predetermined positions. Since the weight of the curtain is detected and stored from the output voltage value of, the reliability of the detection result becomes high.

According to the structure of claim 5, in addition to the operation of claim 1, the moving time when the weight detecting means moves the one end side of the curtain by a predetermined distance while keeping the output voltage value constant. Since the weight of the curtain is detected and stored from the memory, it is not necessary to actually measure the weight of the curtain.

According to the structure of claim 6, in addition to the operation of claim 1, the weight detecting means detects and stores the weight by actually measuring the weight of the curtain. A command value considering the weight is calculated.

According to the structure of claim 7, in addition to the operation of claims 1 to 6, a reset switch is provided so that the stored contents of the detection result of the weight detection means can be arbitrarily reset, so that depending on the situation. The curtain weight can be rediscovered.

According to the structure of claim 8, in addition to the functions of claims 1 to 6, the weight detecting means always detects the weight of the curtain, and when the weight of the curtain changes by a predetermined amount or more, the weight is changed. Since the storage state of the detection result is automatically updated, the weight of the curtain is re-detected labor-savingly.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. This electric curtain drive system uses a motor
7, encoder 8 and monostable multivibrator 9
A speed setting unit 12 and a control circuit 10.

The motor 7 is, for example, a linear motor incorporated in a curtain rail, and the curtain is suspended on a runner which is a mover of the motor 7. That is, the motor 7 is a drive source for opening and closing the curtain, which is movable on one end side in the horizontal direction. Explaining the driving of the motor 7, first, the commercial AC power supply 1 is full-wave rectified by the rectifier 3 composed of a diode bridge. Next, the rectified output is smoothed by the smoothing capacitor 4. Then, the smoothed output is converted into a predetermined voltage by the DC power supply circuit 5 and applied to the motor 7 to drive the motor 7.

By the way, a power switch 2 is inserted between the commercial AC power supply 1 and the rectifier 3, and the power supply to the motor 7 is controlled by turning on / off this switch. Further, a command is sent to the DC power supply circuit 5 from a control circuit 10 described later through a signal line, whereby the DC voltage applied to the motor 7 can be adjusted to change the speed of the motor 7. In addition, the DC power supply circuit 5 and the motor 7
An opening / closing switching circuit 6 is inserted between the two, and the polarity of the DC voltage applied to the motor 7 is controlled to be inverted, so that opening / closing of the curtain can be switched.

The power switch 2 and the open / close switching circuit 6 use relay contacts in this embodiment.

The encoder 8 and the monostable multivibrator 9 are used to detect the position and the opening / closing speed of the curtain.
It is a speed detecting means. The encoder 8 generates a pulse having a cycle proportional to the speed of the motor 7 as shown in FIG. 3A, and its output is input to the monostable multivibrator 9. The monostable multivibrator 9 is triggered by the rising edge of the pulse output of the encoder 8 and outputs a pulse train signal consisting of negative pulses with a constant low level period.

From the number and cycle of the output pulses of the monostable multivibrator 9, the position and speed of the motor 7 can be determined, which corresponds to the position and speed of the curtain. The output of the monostable multivibrator 9 is
It is input to the control circuit 10 described later.

The speed setting unit 12 is for presetting the opening / closing speed of the curtain, and gives setting speed data to the control circuit 10 described later. The control circuit 10 is a motor control unit that controls the motor 7 so that the detected speed matches the set speed, and is composed of a microcomputer.

More specifically, the control circuit 10, as shown in FIG. 1, includes an opening / closing input detection unit 13, a position / speed detection unit 14, a set speed detection unit 15, a control constant storage unit 16, an arithmetic processing unit 17, and an output voltage. It is composed of a control unit 18, a relay control unit 19, a weight detection / storage unit 20, and the like.

The opening / closing input detector 13 detects the operating state of the opening / closing switch 11 for opening / closing or stopping the curtain. The position / speed detector 14 detects the position and speed of the curtain from the output of the monostable multivibrator 9. The set speed detection unit 15 includes the speed setting unit 12
Is used to detect the speed setting state.

The control constant storage unit 16 holds a plurality of control constants that differ depending on the set speed, and the control constant corresponding to the set speed is selected as the set speed is read.

The weight detecting / storing unit 20 is a weight detecting means for detecting the weight of the curtain. For example, from the output voltage value when one end side of the curtain in the horizontal direction passes a predetermined position near the end of the curtain rail. Detect and store curtain weight.

The arithmetic processing unit 17 includes an opening / closing input detection unit 13, a position / speed detection unit 14, a set speed detection unit 15, and a control constant storage unit 1.
6. The calculation processing for controlling the motor 7 is performed according to the input from the weight detection / storage unit 20. Specifically, first, the actual position and speed of the curtain is input from the position / speed detection unit 14, and the set speed is input from the set speed detection unit 15.
A control constant corresponding to the set speed is input from the control constant storage unit 16, and the weight of the curtain is input from the weight detection / storage unit 20. Next, the control constant is changed depending on the weight of the curtain, and the control constant is acted on the speed difference between the set speed and the actual speed to calculate the command value to the motor 7. And
The processing result is output to the output voltage control unit 18 and the relay control unit 19 described later.

The output voltage control unit 18 variably controls the output voltage of the DC power supply circuit 5 according to the processing result of the arithmetic processing unit 17. The relay control unit 19 controls the open / close switching circuit 6 and the power switch 2 according to the processing result of the arithmetic processing unit 17.

With such a configuration, the control circuit 10 receives the electric signal from the open / close switch 11 and the signal from the monostable multivibrator 9, and sends the electric signal to the DC power supply circuit 5 via the signal line. Controls the output voltage value of the DC voltage applied to the motor 7. In addition, an electric signal is sent to the power switch 2 via a signal line to open / close the relay contact to control the on / off of the commercial AC power supply 1, and an electric signal is sent to the open / close switching circuit via the signal line to drive the motor. Controls the polarity of the voltage applied to 7.

The operation of the electric curtain drive system will be described below with reference to the flow charts shown in FIGS. When the electric curtain drive device is in an operable state (at least in a state where power is supplied to the control circuit 10 and the curtain is not driven to open / close), the arithmetic processing unit 17
Now start running the program. Then, at that time, the arithmetic processing unit 17 next performs initial setting. That is, the weight detection point is maximized, the learning flag is set (learning flag =
1), and the following processing is performed in the learning mode, and the output voltage of the DC power supply circuit 5 is set to 0 (steps 1 to 3).

After that, the operation waits until the open / close switch 11 is operated (this waiting processing is performed by the power-on judgment in step 4 and execution of the loop processing shown in FIG. 6). When a curtain opening command is input through the open / close switch 11 (step 20), the control circuit 10 causes the output voltage of the DC power supply circuit 5 to open and close at a predetermined speed. A control input is given to (step 21).

Then, the pulse counter of the position / velocity detector 14 for counting the output pulses of the monostable multivibrator 9 is reset (step 22), and the initial setting for detecting the curtain position is performed. Further, the stop detection counter for judging the stop state of the curtain is reset (step 23), and the initial setting for stop detection is performed. further,
An opening direction signal for driving the motor 7 in the opening direction is output to the open / close switching circuit 6 (step 24). Then, after that, a power-on signal is output to the power switch 2 (switch 25). That is, the relay contact that constitutes the power switch 2 is closed.

As a result, the motor 7 is driven to open the curtain (at this time, programmatically, step 2 is performed).
The procedure returns from step 5 to step 4, and since the power switch 2 is on at this time, the reading of the output pulse of the monostable multivibrator 9 is started. ). By the way, when the curtain starts to open, it is difficult to move the curtain. Therefore, a method may be adopted in which the output of the DC power supply circuit 5 is maximized at the beginning of driving the curtain and then gradually stabilized at a predetermined speed.

In this way, when the motor 7 is driven, the output of the monostable multivibrator 9 is counted by the pulse counter (step 5).
The curtain position is detected. That is, the curtain position is determined from the count number of the pulse counter (step 6-
8). Here, by using the speed detection output, the control circuit is controlled so that the predetermined speed is reached during the opening and closing of the curtain.
Reference numeral 10 controls the output of the DC power supply circuit 5.

When the curtain reaches the end of the curtain rail, the movement of the curtain is stopped. This state is judged from the fact that the output of the monostable multivibrator 9 does not occur. That is, a monostable multivibrator
When the stop detection counter that starts counting from the point when the output is no longer obtained from 9 counts up (step 13), the arithmetic processing unit 17 determines that it is in a stopped state, and at this time, turns off the power supply step. (Step 34).

Thereafter, the learning flag is judged (step 35), and it is judged whether the curtain opening / closing is in the learning mode. If it is in the learning mode, FIG.
As shown in (3), the weight detection point corresponding to the length of the curtain rail is determined using the count value of the pulse counter (step 36). That is, since the length of the curtain rail can be known from the count value of the count pulse, a position for detecting the weight of the curtain, that is, a weight detection point can be arbitrarily determined from here.

The weight detection point is provided near the end of the curtain rail in the moving direction of the curtain. This is because in order to obtain the output voltage value as the curtain weight, the output voltage value when almost the entire curtain is moving is preferable, and when the almost entire curtain is moving, that is, the curtain This is because it can be considered that the one end side has passed a predetermined position near the end of the curtain rail in the moving direction.

When this weight detection point setting process is completed, the learning mode is canceled (step 37). This causes the curtain to move to the normal operation mode (return to step 4).

In this operation mode, if, for example, a curtain closing command is input by the open / close switch 11 (step 26), the curtain is closed at a predetermined speed in the same manner as the case of the opening command in the learning mode. Controls the DC power supply circuit 5 and open / close switching circuit 6, and
2 is input (steps 27 to 31).

After the power is turned on, the output of the monostable multivibrator 9 is counted by the pulse counter (step 5) to detect the curtain position (steps 6-8). Here, the position is detected, the speed is detected, the set speed is read, and the control constant corresponding to the set speed is read (step 9).
~ 11).

Then, it is judged whether or not the curtain weight is stored (step 14). Here, if the curtain weight is not stored, it is judged whether or not the value of the pulse counter matches the weight detection point (step 1
5) If they match, after storing the output voltage value at that time as the curtain weight (step 16), the control constant is changed according to the curtain weight, and the control constant and the actual speed and the speed difference between the speeds, The output voltage value is calculated from this to control the motor 7 (steps 17 and 18). If the curtain weight is already stored, or is not stored and is not the weight detection point, the output voltage value is not stored and the process proceeds to step 17.

When it is detected from the count-up of the stop detection counter that the curtain has been completely closed (step 13), the power switch 2 is opened (step 34) to return to the standby state (step 35 to step 4).
What).

As described above, since the weight of the curtain is taken in to control the motor 7, the curtain does not reach the set speed quickly due to the weight of the curtain, or strange vibration occurs during the operation of the curtain. It is possible to reduce the possibility that the curtain will move, and the operation of the curtain can be performed smoothly regardless of the weight.

In the above description, the case of learning the length in the opening direction of the curtain has been described, but it goes without saying that the length can be learned in the closing direction. In any case, it goes without saying that the curtain needs to be positioned at one of the end positions of the curtain rail during learning.

In the learning mode, the weight detection points may be provided differently depending on whether the curtain is opening or closing. That is, when the curtain is opened, the curtain is pushed near the end of the curtain rail, and the output voltage value tends to become unstable. Therefore, when the curtain is opened, it is preferable to capture the output voltage value before it becomes unstable. Furthermore, the weight of the curtain may be detected by providing a number of weight detection points and averaging the output voltage values at those points.

Further, the weight may be detected by detecting the weight of the curtain from the moving time when one end of the curtain is moved by a predetermined distance while keeping the output voltage value constant. The weight may be detected by measuring the weight, for example, a spring for attaching the curtain may be attached with a spring and the extended length may be taken as the weight.

Further, when a reset switch is provided so that the stored contents of the detection result of the weight detecting means can be arbitrarily reset, or the weight detecting means constantly detects the weight of the curtain, and the weight of the curtain changes by a predetermined amount or more. The storage state of the weight detection result may be automatically updated.

[0054]

In the electric curtain drive device according to the first aspect of the present invention, since the command value to the motor is calculated in consideration of the weight of the curtain, the opening / closing operation of the curtain can be smoothly performed regardless of the weight of the curtain.

The electric curtain drive device according to claim 2 is
In addition to the effect described in claim 1, it is not necessary to actually measure the weight of the curtain, so that the device can be simplified.

The electric curtain drive device according to claim 3 is
In addition to the effect according to claim 2, since the error between the detected weight of the curtain when performing the opening operation and the detected weight of the curtain when performing the closing operation becomes small, the operation of the curtain is performed regardless of the opening operation and the closing operation. Can be smooth.

The electric curtain drive device according to claim 4 is
In addition to the effect of the first aspect, the reliability of the weight detection result is increased, so that the smoothness of the opening / closing operation of the curtain is less likely to be impaired.

The electric curtain drive device according to claim 5 is
In addition to the effect described in claim 1, it is not necessary to actually measure the weight of the curtain, so that the device can be simplified.

The electric curtain drive device according to claim 6 is
In addition to the effect of claim 1, a more accurate command value in consideration of the weight of the curtain is calculated, so that the influence of the curtain weight on the opening / closing operation of the curtain can be further reduced.

The electric curtain drive device according to claim 7 is
In addition to the effects according to claims 1 to 6, the weight of the curtain can be re-detected depending on the situation, so that an abnormality in the opening / closing operation due to replacement of the curtain or the like can be promptly eliminated.

The electric curtain drive device according to claim 8 is:
In addition to the effects according to the first to sixth aspects, the weight of the curtain is re-detected in a labor-saving manner, so that it is possible to quickly and easily eliminate the abnormality in the opening / closing operation due to the replacement of the curtain.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control circuit according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing an embodiment of the present invention.

FIG. 3 is an operation explanatory diagram of the encoder and the monostable multivibrator.

FIG. 4 is a flowchart showing the operation.

FIG. 5 is a flowchart showing the operation.

FIG. 6 is a flowchart showing the operation.

FIG. 7 is a flowchart showing the operation.

[Explanation of symbols]

 7 Motor 8 Encoder 9 Monostable multivibrator 10 Control circuit 12 Speed setting unit 17 Arithmetic processing unit 20 Weight detection / storage unit 24 Arithmetic processing unit

[Procedure amendment]

[Submission date] October 5, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

The position and speed of the motor 7 are detected from the number and cycle of output pulses of the monostable multivibrator 9 .
That it can, it is consistent with the position and velocity of the curtain. The output of the monostable multivibrator 9 is input to the control circuit 10 described later.

Claims (8)

[Claims] 1. A motor that is a drive source for opening and closing operation of a curtain, one end side of which is movable in the horizontal direction, speed setting means for presetting the opening and closing speed of the curtain, and the position and opening and closing speed of the curtain. Position / speed detection means,
A motor control means for controlling the motor so that the detected speed substantially matches the set speed, and a motor control means having an arithmetic processing unit for calculating a command value to the motor from the set speed, the detected speed, and a control constant. In the curtain drive device, a weight detection means for detecting the weight of the curtain is provided, and a control constant used in an arithmetic processing section of the motor control means changes depending on the weight of the curtain. 2. The weight detecting means detects the weight of the curtain from the output voltage value when the one end side of the curtain passes a predetermined position near the end of the curtain rail in the moving direction. The electric curtain drive device according to 1. 3. The electric curtain drive device according to claim 2, wherein the predetermined position is set differently depending on whether the curtain is opened or closed. 4. The weight detection means detects the weight of the curtain from the output voltage value at each position when the one end side of the curtain passes through a plurality of predetermined positions. Electric curtain drive device. 5. The weight detecting means detects the weight of the curtain from a moving time when the one end side of the curtain is moved by a predetermined distance with a constant output voltage value. Electric curtain drive device. 6. The electric curtain drive device according to claim 1, wherein the weight detection means detects the weight by actually measuring the weight of the curtain. 7. The electric curtain drive apparatus according to claim 1, further comprising a reset switch for arbitrarily resetting the stored content of the detection result of the weight detection means. 8. The weight detection means always detects the weight of the curtain, and when the weight of the curtain changes by a predetermined amount or more, the storage state of the weight detection result is automatically updated. The electric curtain drive device according to any one of 1 to 6.