Electric opening and closing device control device, electric opening and closing system, program

Abstract

To provide a technology to easily set a position at which a shutter curtain should be stopped.SOLUTION: A motor 86 outputs a rotation power to a winding shaft capable of winding up a shutter curtain. A current value detection part 424 controls a current value for rotating the motor 86. The current value detection part 424 detects a current value output to the motor 86. A setting part 426 sets a rotation angle in a specific state of the shutter curtain based on change of the current value, which is detected by the current value detection part 424 and per unit change amount of a position of rotation of the motor 86, when the shutter curtain is fed out from the winding shaft 60.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to an opening / closing body technology, and relates to an electric opening / closing body control device, an electric opening / closing system, and a program for electrically opening and closing an electric opening / closing body. [Background technology]

[0002] An electric shutter device needs a mechanism to prevent people from being caught in the shutter by mistake. In other words, if the operation of the shutter curtain is hindered by an obstacle, the motor may become overloaded, so a device is required to detect an overloaded state in which the motor is overloaded. For example, the position information of the shutter curtain and current information related to the load state of the motor are stored in association with each other, and an overloaded state is detected when the current value measured during operation deviates from the current information corresponding to the position information at that time (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-307471 A Summary of the Invention [Problem to be solved by the invention]

[0004] When installing an electric shutter device, it is necessary to set the upper and lower limit positions of the shutter curtain. Generally, this setting requires complicated operations and is often done by a professional.

[0005] The present disclosure has been made in consideration of these circumstances, and has an object to provide a technique for easily setting the position at which a shutter curtain should stop. [Means for solving the problem]

[0006] In order to solve the above problems, an electric opening / closing body control device of one embodiment of the present disclosure comprises an electric unit that outputs rotational power to a winding shaft capable of winding up the shutter curtain, a control unit that controls the current value for rotating the electric unit, a current value detection unit that detects the current value output to the electric unit, and a setting unit that sets the rotation angle of a specific state of the shutter curtain based on the change in current value detected by the current value detection unit when winding the shutter curtain onto the winding shaft or when unwinding the shutter curtain from the winding shaft, and based on the change in current value per unit change in position in the rotation of the electric unit. In a shutter curtain, multiple slats are combined, and the multiple slats in the shutter curtain are slidable so that the slits formed between two adjacent slats can be opened and closed. When the shutter curtain is unwound from the winding shaft, each slit is open during the downward period until the lower end of the shutter curtain can no longer descend, and during the closing period from the air intake state when the lower end of the shutter curtain can no longer descend, the slits close in order starting from the lower slats, and the specific state set in the setting unit is the air intake state. Another aspect of the present disclosure is also an electric opening / closing body control device. This device includes an electric unit that outputs rotational power to a winding shaft capable of winding up a shutter curtain, a control unit that controls a current value for rotating the electric unit, a current value detection unit that detects a current value output to the electric unit, and a setting unit that sets a rotation angle of a specific state of the shutter curtain based on a change in the current value detected by the current value detection unit and a change in the current value per unit change in the position in the rotation of the electric unit when the shutter curtain is unwound from the winding shaft. The setting unit obtains, as a slope of the current value, a change in the current value detected by the current value detection unit and a change in the current value per unit change in the rotation angle in the rotation of the electric unit when the shutter curtain is wound up on the winding shaft or when the shutter curtain is unwound from the winding shaft, and sets a rotation angle of a state in which the shutter curtain is open or a state in which the shutter curtain closes the opening based on the change in the slope of the current value.

[0007] Any combination of the above components, or conversion of the present disclosure into a method, device, system, computer program, or recording medium having a computer program recorded thereon, is also valid as an aspect of the present disclosure. Effect of the Invention

[0008] According to the present disclosure, the position at which the shutter curtain should stop can be easily set. [Brief description of the drawings]

[0009] [Figure 1] 1(a)-(b) are diagrams showing the structure of a shutter system according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing the internal structure of the shutter system in FIGS. [Diagram 3] FIG. 2 is a block diagram showing the configuration of the shutter system of FIGS. [Figure 4] 4(a)-(b) are diagrams showing an outline of the operation of the shutter system of FIGS. 1(a)-(b). [Diagram 5] 5(a)-(d) are diagrams showing an outline of the operation of the shutter system of FIGS. 1(a)-(b). [Figure 6] 4 is a diagram showing an overview of two-axis conversion performed in a current value detection unit in FIG. 3. [Figure 7] 4 is a diagram showing the relationship between the rotation angle and the current value in the current control unit of FIG. 3. [Figure 8] 8(a)-(b) are enlarged views of a portion of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Before describing the specific examples of the present disclosure, an overview of the examples will be provided. The examples relate to a shutter system installed at an opening of a facility such as a house. The shutter system is an electric shutter, and the electric shutter automates shutter operation. In the electric shutter, a shutter curtain made up of a combination of multiple slats is opened and closed by rotating a winding shaft. When installing such an electric shutter, it is necessary to set a range within which the shutter curtain can move. The range of movement is indicated by the rotation angle (hereinafter referred to as the "fully open angle") at which the shutter curtain completely opens the opening (hereinafter referred to as the "fully open state") and the rotation angle at which the shutter curtain closes the opening.

[0011] On the other hand, slits are provided in the electric shutter to add a ventilation function or a lighting function to the electric shutter. The ventilation and lighting functions are functions for taking in wind and light. For example, the slats of the electric shutter are configured to be slidable, and a slit is formed between two adjacent slats by widening the gap between the two adjacent slats. In such an electric shutter, when the shutter curtain rotates in the closing direction and the lower end of the shutter curtain reaches the lower surface of the opening, all the slits are open (hereinafter referred to as the "ventilation state"). In addition, when the shutter curtain rotates in the same direction from the ventilation state, all the slits are closed (hereinafter referred to as the "completely closed state"). In such an electric shutter, in addition to the fully open angle, it is necessary to set a rotation angle at which the ventilation state is reached (hereinafter referred to as the "ventilation angle") and a rotation angle at which the fully closed state is reached (hereinafter referred to as the "completely closed angle").

[0012] The fully open angle and the fully closed angle are set manually during construction. The air intake angle is set manually while the user visually checks. By doing it manually, the set rotation angle, i.e., the position of the shutter curtain, varies depending on the individual. To improve construction and convenience, it is preferable to automate these settings. However, since the load characteristics differ depending on the size and height of the shutter, it is difficult to detect the rotation angle based on the load. Therefore, in this embodiment, the fully open angle, the fully closed angle, and the air intake angle are automatically set by detecting the feature amount of each state based on the torque current (motor current) of the vector control.

[0013] Below, we will explain (1) the basic structure, (2) the structure with slits, and (3) setting the rotation angle in that order. (1) Basic structure The basic structure corresponds to the structure of the shutter system 1000 according to this embodiment, omitting the structure related to the slit. Figures 1(a)-(b) show the structure of the shutter system 1000. Figures 1(a)-(b) show the structure of the shutter system 1000. Figure 1(a) shows the configuration when the facility is viewed from outside, and Figure 1(b) shows the configuration when the facility is viewed from inside. The shutter system 1000 includes a guide rail 20, a shutter curtain 30, a shutter case 40, a communication line 200, and a controller 300, and the shutter curtain 30 includes a slat 32 and a seat plate 33. Here, the guide rail 20, the shutter curtain 30, and the shutter case 40 are included in the shutter.

[0014] As shown in FIG. 1(a), a shutter, which is an opening / closing body, is installed in an opening 10 formed in an exterior wall that separates the inside and outside of a facility such as a house or a building. The opening 10 is a space that communicates the inside and outside of the facility. The two guide rails 20 have a shape that extends in the vertical direction, and are fixed to a frame material such as a sash installed in the opening 10 and the exterior wall, spaced apart from each other on both left and right sides of the opening 10. Each guide rail 20 is a hollow member having an internal structure with a substantially U-shaped cross section, and the two guide rails 20 are fixed so that their U-shaped openings face each other.

[0015] The shutter curtain 30 moves up and down along the longitudinal direction of the guide rail 20 to open and close the opening 10. Specifically, both left and right ends of the shutter curtain 30 are inserted into the guide rail 20, so that both left and right ends of the shutter curtain 30 can be moved up and down by the guide rail 20. The shutter curtain 30 is configured by a combination of a plurality of slats 32 and a seat plate 33. Each slat 32 is a plate-shaped member extending along the left and right direction of the opening 10, and is formed of, for example, steel, stainless steel, aluminum, or the like. A curled portion (not shown) is provided at the upper end and the lower end of each slat 32, and of two adjacent slats 32, the curled portion at the lower end of the upper slat 32 and the curled portion at the upper end of the lower slat 32 are rotatably connected. The seat plate 33 is rotatably connected to the lower side of the lowest slat 32. Further details of the structure of the shutter curtain 30, which is a combination of a plurality of slats 32 and a seat plate 33, will be described later.

[0016] The shutter case 40 is a container with a generally rectangular vertical cross section that is provided above the opening 10 and the guide rail 20. The shutter case 40 has a storage space inside, and the storage space is connected to the outside via a through hole provided on the underside of the shutter case 40. A winding mechanism is provided in the storage space for winding up or unwinding the shutter curtain 30 via the through hole. Here, "winding up" means that the shutter curtain 30 rises along the guide rail 20 to open the opening 10, and "unwinding" means that the shutter curtain 30 falls along the guide rail 20 to close the opening 10.

[0017] As shown in Fig. 1(b), a sash 12 is attached so as to surround the opening 10. A communication line 200 connected to the shutter case 40 in Fig. 1(a) is buried inside the sash 12 and extends to the interior of the building. A controller 300 is installed on a wall surface of the building, and the communication line 200 is connected to the controller 300. In this way, the communication line 200 connects the motorized unit 100 installed outdoors and the controller 300 installed indoors.

[0018] 2 shows the internal structure of the shutter system 1000. The shutter system 1000 includes a shutter curtain 30, a shutter case 40, and a winding shaft 60. The shutter curtain 30 includes a slat 32, a seat plate 33, and a screw 34, and the shutter case 40 includes a first bracket 42a and a second bracket 42b, which are collectively referred to as brackets 42, and a first support shaft 44a and a second support shaft 44b, which are collectively referred to as support shafts 44. The winding shaft 60 includes a first rotating frame 62a and a second rotating frame 62b, which are collectively referred to as rotating frames 62, a driven wheel 64, a winding spring 66, a fixing part 72, and an electric motor unit 80, and the electric motor unit 80 includes a main body 82 and a driving wheel 84, and the main body 82 includes a motor 86, a control unit 88, a reducer 90, and a communication line 200. The electric motor unit 80 is also called an electric opening / closing body control device.

[0019] Here, the shutter case 40 is shown transparent to show the internal structure of the shutter case 40. A winding shaft 60, which is a cylindrical support extending in the left-right direction, is disposed in the shutter case 40. A plurality of fixing parts 72 are provided on the winding shaft 60, and the shutter curtain 30 is fixed to the plurality of fixing parts 72 using a plurality of screws 34. Therefore, it can be said that the winding shaft 60 is a shaft capable of winding up the shutter curtain 30.

[0020] At the left and right ends of the storage space of the shutter case 40, a first bracket 42a and a second bracket 42b, collectively referred to as bracket 42, are provided to sandwich the winding shaft 60 from the left and right. Specifically, the first bracket 42a is disposed on the left side of the winding shaft 60, and the second bracket 42b is disposed on the right side of the winding shaft 60. The first bracket 42a is a support part that rotatably supports the left end of the winding shaft 60, and the second bracket 42b is a support part that rotatably supports the right end of the winding shaft 60. When the left end of the winding shaft 60 is referred to as the "first end", the right end of the winding shaft 60 is referred to as the "second end".

[0021] A first support shaft 44a protruding toward the right side is provided on the right side surface of the first bracket 42a. The first support shaft 44a has a cylindrical shape, and a first rotating frame 62a is fitted to the side surface of the first support shaft 44a. The first rotating frame 62a is disposed at the left end portion of the winding shaft 60 and has a shape surrounding the side surface of the first support shaft 44a. With this structure, the first rotating frame 62a rotates around the first support shaft 44a fixed to the first bracket 42a. A second support shaft 44b protruding toward the left side is provided on the left side surface of the second bracket 42b. The second support shaft 44b has a cylindrical shape, and a second rotating frame 62b is fitted to the side surface of the second support shaft 44b. The second rotating frame 62b is disposed at the right end portion of the winding shaft 60 and has a shape surrounding the side surface of the second support shaft 44b. With this structure, the second rotary frame 62b rotates around the second support shaft 44b fixed to the second bracket 42b. Furthermore, the take-up shaft 60 also rotates due to the rotation of the first rotary frame 62a and the second rotary frame 62b.

[0022] A holder (not shown) is disposed in the right region inside the winding shaft 60, and the motorizing unit 80 is attached to the holder. The motorizing unit 80 is an electric device that outputs rotational power to the winding shaft 60. The motorizing unit 80 includes a cylindrical main body 82 and a drive wheel 84 disposed on the left side of the main body 82. It can be said that the drive wheel 84 faces the center side of the winding shaft 60 in the motorizing unit 80. A motor 86, a control unit 88, and a speed reducer 90 are mounted inside the main body 82, and the speed reducer 90 and the drive wheel 84 also rotate due to the rotation of the motor 86. The control unit 88 controls the rotation of the motor 86. In particular, the control unit 88 controls the value of the current for rotating the motor 86 of the motorizing unit 80.

[0023] Inside the winding shaft 60, a driven wheel 64 is provided in an area to the left of the holding portion, that is, an area on the central side of the winding shaft 60 with respect to the motorized unit 80. The driven wheel 64 is disposed to the left of the driving wheel 84, and rotates with the rotation of the driving wheel 84 when combined with the driving wheel 84. The rotation of the driven wheel 64 also rotates the winding shaft 60. As a result, it can be said that the winding shaft 60 rotates with the rotational power from the motorized unit 80. On the other hand, when the driving wheel 84 and the driven wheel 64 are not combined with each other, the winding shaft 60 rotates with manual rotational power, not with the rotational power from the motorized unit 80. A description of the manual rotation of the winding shaft 60 will be omitted.

[0024] Here, the holding part holds a portion of the side surface of the main body 82, for example, a portion including the lower side of the side surface of the main body 82. In addition, the right end part of the holding part is connected to the second support shaft 44b. Because the holding part is fixed to the second bracket 42b by this connection, the main body 82 held by the holding part does not rotate even when the winding shaft 60 rotates.

[0025] More specifically, in the main body 82 of the motorized unit 80, the motor 86 rotates under the control of the control unit 88. The speed reducer 90 amplifies the torque of the rotational power of the motor 86. The speed reducer 90 may use any known technology, and may have a structure in which a plurality of planetary gears revolve around a sun gear while rotating on their own axes. When the drive wheel 84 rotates due to the rotation of the speed reducer 90, the driven wheel 64 combined with the drive wheel 84 also rotates, and the winding shaft 60 rotates.

[0026] When the winding shaft 60 rotates in the winding direction from a state in which the shutter curtain 30 closes the opening 10 as shown in FIG. 1(a), the shutter curtain 30 opens the opening 10 while being wound along the outer circumferential surface of the winding shaft 60. As this rotation continues, the shutter curtain 30 is wound up while being stacked on the shutter curtain 30 that was wound up in the first rotation, opening the entire opening 10. Also, when the winding shaft 60 rotates in the unwinding direction from a state in which the shutter curtain 30 opens the opening 10, the shutter curtains 30 stacked on the outer circumferential surface of the winding shaft 60 are unwound one by one. As this rotation continues, the shutter curtain 30 closes the entire opening 10.

[0027] 3 is a block diagram showing the configuration of the shutter system 1000. The shutter system 1000 includes a motorized unit 80, a communication line 200, and a controller 300. The motorized unit 80 includes a motor 86 and a control unit 88, and the control unit 88 includes a first connection unit 410, a first wired communication unit 412, a position control unit 414, a position detection unit 416, a speed control unit 418, a differentiation unit 420, a current control unit 422, a current value detection unit 424, and a setting unit 426. The controller 300 includes an operation unit 310, an operation control unit 312, a second wired communication unit 314, and a second connection unit 316.

[0028] The operation unit 310 of the controller 300 is a user interface having a plurality of buttons, and accepts user operations. An open button, a stop button, and a close button are provided on the surface of the controller 300. The open button, the stop button, and the close button are configured, for example, as flat switches. The open button is a button that accepts an instruction to move the shutter curtain 30 so as to open the opening 10 (hereinafter referred to as an "open instruction"). The stop button is a button that accepts an instruction to stop the moving shutter curtain 30 (hereinafter referred to as a "stop instruction"). The close button is a button that accepts an instruction to move the shutter curtain 30 so as to close the opening 10 (hereinafter referred to as a "close instruction"). When one of the open button, the stop button, and the close button is pressed down, an operation signal corresponding to one of the open instruction, the stop instruction, and the close instruction is output from the operation unit 310 to the operation control unit 312.

[0029] The operation control unit 312 receives an operation signal from the operation unit 310. The operation control unit 312 generates an instruction signal including one of an open instruction, a stop instruction, and a close instruction indicated in the operation signal. The second wired communication unit 314 receives the instruction signal from the operation control unit 312, and transmits the instruction signal to the motorization unit 80 via the second connection unit 316 and the communication line 200.

[0030] The second connection unit 316 is an interface for connecting the communication line 200 to the controller 300. The first connection unit 410 of the motorization unit 80 is also an interface for connecting the communication line 200. The communication line 200 connects the controller 300 and the motorization unit 80 by connecting the communication line 200 to the second connection unit 316 and the first connection unit 410. With this connection, the communication line 200 transmits an instruction signal from the controller 300 to the motorization unit 80. Since the controller 300 is installed indoors and the motorization unit 80 is installed outdoors, an instruction signal is transmitted from indoors to outdoors.

[0031] First wired communication unit 412 receives an instruction signal from second wired communication unit 314 via second connection unit 316, communication line 200, and first connection unit 410. First wired communication unit 412 outputs one of an open instruction, a stop instruction, and a close instruction included in the instruction signal to position control unit 414. Position control unit 414 accepts one of an open instruction, a stop instruction, and a close instruction from first wired communication unit 412.

[0032] The position control unit 414 updates the target value of the position (position of the lower end) of the shutter curtain 30 in response to one of the received open, stop, and close instructions. For example, when the position control unit 414 receives an open instruction, it updates the target value so as to increase the target value. The position control unit 414 also receives a feedback value of the position of the shutter curtain 30 from the position detection unit 416. A method of detecting the feedback value of the position in the position detection unit 416 will be described later. Here, the position of the shutter curtain 30 may be indicated as an angle of rotation of the motor 86, but hereinafter, the position and the angle will be used without distinction. The position control unit 414 outputs a target value of the speed for operating at a non-zero constant speed until at least one of the target value and the feedback value reaches the upper limit position (completely open angle) or the lower limit position (completely closed angle), or until a stop instruction is received.

[0033] The differentiation unit 420 receives a feedback value of the position of the shutter curtain 30 from the position detection unit 416, and derives a feedback value of the speed by differentiating the position feedback value. The differentiation unit 420 outputs the feedback value of the speed to the speed control unit 418. The speed control unit 418 receives a target value of the speed from the position control unit 414, and receives the feedback value of the speed from the differentiation unit 420. The speed control unit 418 derives a speed deviation by subtracting the feedback value of the speed from the target value of the speed, and then performs speed loop processing such as proportional-integral control to derive a target value of the torque (current).

[0034] The current control unit 422 receives a target value of torque (current) from the speed control unit 418. The magnitude of the current output from the current control unit 422 to the motor 86, that is, the value of the total current supplied to the motor 86 of the motorization unit 80, is detected by the current value detection unit 424, and the current control unit 422 receives a feedback value of the detected current. The current value detection unit 424 is configured by, for example, a shunt resistor. The current control unit 422 determines the magnitude of the current to be output to the motor 86 so that the feedback value of the current approaches the target value of torque (current). This corresponds to controlling the current for rotating the motor 86, and a known technique may be used for this determination. In other words, the speed control unit 418 and the current control unit 422 determine the value of the current for rotating the motor 86 according to the change in position detected by the position detection unit 416, that is, the speed.

[0035] Motor 86 rotates at a speed according to the value of the current output from current control unit 422. Motor 86 outputs rotational power to winding shaft 60. If motor 86 is a three-phase brushless motor, current control unit 422 outputs a three-phase direct current.

[0036] With this configuration, when the control signal corresponds to an open command, the control unit 88 rotates the motor 86 so that the winding shaft 60 rotates in the winding direction, and when the control signal corresponds to a close command, the control unit 88 rotates the motor 86 so that the winding shaft 60 rotates in the unwinding direction. The rotation direction of the motor 86 in the winding direction is opposite to the rotation direction of the motor 86 in the unwinding direction. On the other hand, when the control signal corresponds to a stop command, the control unit 88 stops the rotation of the motor 86. The motor 86 rotates in response to the control unit 88 and supplies power to the shutter curtain 30, the winding shaft 60, and the like that open and close the opening 10.

[0037] When the shutter curtain 30 is opened or closed according to the rotation direction of the motor 86, the position of the shutter curtain 30 is detected by the position detection unit 416. The position detected by the position detection unit 416 can also be said to be the position in the rotation of the motor 86. The position detection unit 416 is, for example, configured as a counter-type limit switch provided on the side of the motor 86, which mechanically counts the number of rotations of the motor 86 to detect the open / closed position or the upper and lower limit positions. The position detection unit 416 may also be configured to detect the open / closed position or the upper and lower limit positions of the shutter curtain 30 by counting pulses using an encoder provided on the motor 86. The position detection unit 416 may also be configured as a current detection circuit of the motor 86, which detects the open / closed position or the upper and lower limit positions from a change in current value corresponding to a load fluctuation applied to the motor 86. Furthermore, the position detection unit 416 may be a mechanical or electrical limit switch provided above and below the guide rail 20 to directly detect the open / closed position or the upper and lower limit positions of the shutter curtain 30. The position detected by the position detection section 416 is output to the position control section 414 and the differentiation section 420. The setting section 426 will be described later.

[0038] (2) Slit structure The structure of the slit added to the shutter system 1000 explained thus far will be described below. Figures 4(a)-(b) show an outline of the operation of the shutter system 1000. Figure 4(a) shows the structure of the winding shaft 60 and the shutter curtain 30 in Figure 2 when viewed from the side. At the rotation angle of the winding shaft 60 shown in Figure 4(a), the multiple slats 32 and the seat plate 33 hang down from the winding shaft 60, and the lower end of the seat plate 33 does not reach the lower surface 14.

[0039] A first slat 32a is disposed above the seat plate 33, and a second slat 32b is disposed above the first slat 32a. A slide member 36 is disposed between the seat plate 33 and the first slat 32a. A slide member 36 is also disposed between two adjacent slats 32. The slide member 36 is a member that slides the slat 32 in the up-down direction, and a slit 38 opens and closes between the seat plate 33 and the first slat 32a. In addition, a slit 38 opens and closes between two adjacent slide members 36. In a state in which the lower end has not reached the lower surface 14 as shown in FIG. 4(a), the seat plate 33 moves downward due to gravity applied to the seat plate 33. In addition, the lower slat 32 of the two adjacent slides also moves downward. As a result, the slit 38 between the seat plate 33 and the first slat 32a is opened. In addition, the slits 38 between all exposed slats 32 are opened.

[0040] At the rotation angle of the winding shaft 60 shown in FIG. 4(b), the plurality of slats 32 hang downward from the winding shaft 60, and the lower end of the seat plate 33 reaches the lower surface 14. The first slat 32a moves downward due to the rotation of the motor 86. As a result, the slit 38 between the seat plate 33 and the first slat 32a is closed. On the other hand, the second slat 32b does not move downward, so the slit 38 between the first slat 32a and the second slat 32b is opened. In addition, when the shutter curtain 30 is wound on the winding shaft 60, the slide member 36 bends along the winding shaft 60 together with the slats 32.

[0041] Figures 5(a)-(d) show an outline of the operation of the shutter system 1000. Figure 5(a) shows the structure of the shutter system 1000 in a state in which the seat plate 33 has not yet reached the lower surface 14, similar to Figure 4(a). The multiple slats 32 in the shutter curtain 30 are shown in order from the bottom as the first slat 32a, the second slat 32b, the third slat 32c, ... Here too, the slit 38 between the seat plate 33 and the first slat 32a is opened, and all the slits 38 between adjacent slats 32 are also opened.

[0042] Fig. 5(b) shows the structure of the shutter system 1000 in a state where the seat plate 33 has reached the lower surface 14 by unrolling the shutter curtain 30 further than in Fig. 5(a). Here again, the slit 38 between the seat plate 33 and the first slat 32a is opened, and all the slits 38 between the adjacent slats 32 are also opened.

[0043] Fig. 5(c) shows the structure of the shutter system 1000 in a state in which the shutter curtain 30 is further unrolled from Fig. 5(b). As the shutter curtain 30 is unrolled, the slats 32 slide downward in order starting from the lower slat. For example, the first slat 32a moves downward, causing the seat plate 33 to come into contact with the first slat 32a, and the second slat 32b moves downward, causing the first slat 32a to come into contact with the second slat 32b. Furthermore, the third slat 32c and the fourth slat 32d also move downward, causing the second slat 32b to come into contact with the third slat 32c, and the third slat 32c to come into contact with the fourth slat 32d.

[0044] As a result, the slit 38 between the seat panel 33 and the first slat 32a is closed, and the slit 38 between the first slat 32a and the fourth slat 32d is also closed. On the other hand, the fifth slat 32e does not move downward, so the fourth slat 32d and the fifth slat 32e are separated from each other. Therefore, the slit 38 between the fourth slat 32d and the fifth slat 32e is opened.

[0045] Fig. 5(d) shows the structure of the shutter system 1000 in a state in which the shutter curtain 30 is further unrolled from Fig. 5(c). As all of the slats 32 move downward, adjacent slats 32 all come into contact with each other. As a result, the slits 38 between all of the slats 32 are closed. Up to this point, the operation when the shutter curtain 30 is unrolled has been described, but when the shutter curtain 30 is wound up, the shutter system 1000 may transition in the order of Fig. 5(d), Fig. 5(c), Fig. 5(b), and Fig. 5(a).

[0046] The opening and closing operation of the shutter curtain 30 is performed by rotating the motor 86 of the motorized unit 80 through an operation on the controller 300. At that time, the position detection unit 416 detects the position of the shutter curtain 30, that is, the angle of rotation of the motor 86 (hereinafter referred to as the "rotation angle"), and the current value detection unit 424 detects the current value for rotating the motor 86. The rotation angle is indicated by, for example, a counter value, and the current value is, for example, the torque component of a three-phase current.

[0047] To explain the process in the current value detection unit 424 more specifically, the current value detection unit 424 detects a torque component of the current value flowing through the motor 86. When the motor 86 is a three-phase brushless motor, the three-phase DC currents output to the three-phase brushless motor are indicated as u-phase, v-phase, and w-phase. The three-phase brushless motor rotates as the composite vector of the current vectors of each phase periodically changes angle. The current value detection unit 424 receives the current vectors of the u-phase, v-phase, and w-phase, and performs two-axis transformation on these to the q-axis and d-axis. Since a known matrix operation may be performed for such transformation, a description thereof will be omitted here.

[0048] FIG. 6 shows an overview of the two-axis conversion performed in the current value detection unit 424. The mutually orthogonal u-phase, v-phase, and w-phase are shown, as well as the mutually orthogonal d-axis and q-axis. Here, the d-axis indicates the excitation component, and the q-axis indicates the torque component. The resultant vector is converted into a combination of the excitation vector in the d-axis direction and the torque vector in the q-axis direction by the two-axis conversion. This corresponds to converting the three-phase current in a three-phase brushless motor into a combination of the excitation component and the torque component. Of the excitation component and the torque component, the torque component has a characteristic that is proportional to the load due to an external force. In other words, the torque component reflects the change in the torque of the total load. Return to FIG. 3. The position detection unit 416 outputs the rotation angle to the current control unit 422, and the current value detection unit 424 outputs information on the current value to the current control unit 422.

[0049] 7 shows the relationship between the rotation angle and the current value in the current control unit 422. As described above, the rotation angle is received from the position detection unit 416, and the current value is received from the current value detection unit 424. The horizontal axis indicates the rotation angle, and the vertical axis indicates the current value (torque current, motor current). The rotation angle increases toward the right on the horizontal axis, and the shutter curtain 30 descends further as the rotation angle increases. The rotation angle "A1" corresponds to the "fully open angle," and the state of the shutter system 1000 at that time is the fully open state. The fully open state is a state in which the shutter curtain 30 completely opens the opening 10.

[0050] Furthermore, rotation angle "A2" corresponds to the "air intake angle", and the state of the shutter system 1000 at that time is the air intake state. The air intake state is a state in which the shutter curtain 30 closes the opening 10, but all of the slits 38 are open. Furthermore, rotation angle "A3" corresponds to the "completely closed angle", and the state of the shutter system 1000 at that time is the completely closed state. The completely closed state is a state in which the shutter curtain 30 closes the opening 10, and all of the slits 38 are closed.

[0051] Between the rotation angles "A1" and "A2", the weight of the slats 32 and the load of the winding spring 66 are balanced, so the current value fluctuates within a certain range. This is a state in which the shutter curtain 30 partially closes the opening 10 and all of the slits 38 are open. As the rotation angle moves from "A2" to "A3", the slits 38 begin to close, so the weight of the slats 32 decreases. Meanwhile, as the motor 86 rotates, the load of the winding spring 66 increases. As a result, the load balance is biased towards the load of the winding spring 66, so the current value increases in proportion to the increase in the rotation angle.

[0052] The period when the rotation angle of the shutter curtain 30 when it descends is between "A1" and "A2", that is, the period when it transitions from the fully open state to the air intake state, is called the "descent period". The descending period can be said to be the period until the lower end of the shutter curtain 30 cannot descend when the shutter curtain 30 is descended by the motor 86, and the period when each slit 38 is open. In addition, the period when the rotation angle of the shutter curtain 30 when it descends is between "A2" and "A3", that is, the period when it transitions from the air intake state to the fully closed state, is called the "closed period". The closed period can be said to be the period when the lower end of the shutter curtain 30 cannot descend and the slits 38 close in order starting from the lower side. In addition, the period when the rotation angle of the shutter curtain 30 when it ascends is between "A3" and "A1", that is, the period when it transitions from the fully closed state to the fully open state via the air intake state, is called the "rising period".

[0053] (3) Setting the rotation angle When such a shutter system 1000 is installed in the opening 10 of Fig. 1, it is necessary to set the fully open angle, the air intake angle, and the fully closed angle of the shutter curtain 30 in advance. After the fully open angle, the air intake angle, and the fully closed angle are set, the shutter curtain 30 is wound up or unwound between the fully open angle and the fully closed angle by operating the controller 300. In addition, the slit 38 of the shutter curtain 30 is closed or opened between the air intake angle and the fully closed angle. The setting of the fully open angle, the air intake angle, and the fully closed angle will be described below.

[0054] 8(a)-(b) are enlarged views of a portion of FIG. 7. FIG. 8(a) shows the vicinity of the rotation angle "A1" in FIG. 7. When the rotation angle decreases from a value greater than "A1" toward "A1", that is, when the controller 300 is wound up, the current value fluctuates within a certain range. When the rotation angle becomes smaller than "A1", the rotation angle decreases and the current value increases. This corresponds to an increase in the slope of the current value according to the change in the current value. The increase in the slope of the current value is due to an increase in the reaction force from the shutter case 40 when the winding of the shutter curtain 30 is completed.

[0055] FIG. 8(b) shows the vicinity of the rotation angles "A2" and "A3" in FIG. 7. When the rotation angle increases from a value smaller than "A2" toward "A2", that is, when the controller 300 is unrolled, the current value fluctuates within a certain range. When the rotation angle becomes larger than "A2", the current value increases while the rotation angle increases to "A2'". This is because the weight of the seat plate 33 decreases as the seat plate 33 reaches the lower surface 14, and the load of the winding spring 66 increases. Also, when the rotation angle becomes larger than "A2'", the current value increases gradually while the rotation angle increases to "A3". This is because the weight of the slat 32 decreases step by step as the slits 38 are closed one by one, and the load of the winding spring 66 increases step by step.

[0056] When the rotation angle becomes larger than "A3", the current value increases as the rotation angle increases. This also corresponds to the current value increasing in slope as the current value changes. The increase in the slope of the current value occurs because the reaction force from the lower surface 14 increases when the shutter curtain 30 is unrolled and the slits 38 are closed.

[0057] In this embodiment, the change in the slope of the current value is used to set the fully open angle and the fully closed angle, and the change in the current value is used to set the air intake angle. The shutter curtain 30 is unrolled or reeled in as the motor 86 rotates. In such a situation, the position detection unit 416 in FIG. 3 sequentially detects the position (rotation angle) and outputs it to the setting unit 426, and the current value detection unit 424 sequentially detects the current value and outputs it to the setting unit 426. The setting unit 426 sequentially receives the position (rotation angle) from the position detection unit 416 and sequentially receives the current value from the current value detection unit 424.

[0058] The setting unit 426 monitors the change in the rotation angle sequentially received from the position detection unit 416, and recognizes that the shutter curtain 30 is being wound around the winding shaft 60 when the rotation angle is decreasing. When the setting unit 426 winds up the shutter curtain 30 around the winding shaft 60, the setting unit 426 derives the change in the current value per unit change in the rotation angle as the slope of the current value. The unit change may be set to, for example, the detection interval between the position control unit 414 and the current value detection unit 424, or may be set to an integer multiple of the detection interval. To be more specific, the setting unit 426 receives a current value acquired at a predetermined timing (hereinafter referred to as a "first current value") and a current value acquired a unit change amount after the predetermined timing (hereinafter referred to as a "second current value"). The setting unit 426 derives the slope of the current value, which is the change in the current value, by subtracting the first current value from the second current value. When a new current value is received, this current value is set as the second current value, and the original second current value is set as the first current value, and this process is repeatedly executed.

[0059] As a result, the setting unit 426 sequentially derives the slope of the current value. The setting unit 426 determines one of the slopes of the two consecutive current values ​​as a "first slope" and the slope following the first slope as a "second slope". The setting unit 426 derives the change in the slope of the current value by subtracting the first slope from the second slope. Such processing is repeatedly executed while changing the slope of the two consecutive current values. The setting unit 426 sequentially compares the change in the slope of the current value with the first threshold value when the rotation angle decreases. When the change in the slope of the current value becomes larger than the first threshold value, the setting unit 426 determines that the shutter curtain 30 is in a completely open state. In addition, the setting unit 426 specifies the rotation angle when it is determined that the shutter curtain 30 is in a completely open state as the completely open angle. The first threshold value is derived in advance by an experiment or a simulation calculation.

[0060] The setting unit 426 monitors the change in the rotation angle sequentially received from the position detection unit 416, and recognizes that the shutter curtain 30 is being unwound from the winding shaft 60 when the rotation angle is increasing. When the shutter curtain 30 is being unwound from the winding shaft 60, the setting unit 426 derives the change in the current value per unit change in the rotation angle as the slope of the current value. Since the derivation of the slope of the current value is the same as before, the description will be omitted here. When the rotation angle increases, the setting unit 426 sequentially compares the slope of the current value with the second threshold value. When the slope of the current value becomes larger than the second threshold value, the setting unit 426 determines that the shutter curtain 30 is in the air intake state. In addition, the setting unit 426 specifies the rotation angle when it is determined that the shutter curtain 30 is in the air intake state as the air intake angle. The second threshold value is also derived in advance by experiment or simulation calculation.

[0061] The setting unit 426 derives the change in the slope of the current value as before. When the rotation angle increases, the setting unit 426 sequentially compares the change in the slope of the current value with the third threshold value. When the change in the slope of the current value becomes larger than the third threshold value, the setting unit 426 determines that the shutter curtain 30 is in a fully closed state. Furthermore, the setting unit 426 specifies the rotation angle when it is determined that the shutter curtain 30 is in a fully closed state as the fully closed angle. The third threshold value is also derived in advance by an experiment or a simulation calculation. The third threshold value may be the same value as the first threshold value. The setting unit 426 sets the fully open angle, the ventilation angle, and the fully closed angle.

[0062] After the setting unit 426 has performed the setting, the position control unit 414 stops the winding operation when the target value of the position (rotation angle) in the operation of winding the shutter curtain 30 around the winding shaft 60 reaches the fully open angle. On the other hand, the position control unit 414 stops the winding operation when the target value of the position (rotation angle) in the operation of unwinding the shutter curtain 30 from the winding shaft 60 reaches the air intake angle or the fully closed angle.

[0063] The subject of the device, system, or method in the present disclosure includes a computer. The computer executes a program to realize the function of the subject of the device, system, or method in the present disclosure. The computer includes a processor that operates according to a program as a main hardware configuration. The type of the processor does not matter as long as it can realize the function by executing the program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). The multiple electronic circuits may be integrated into one chip or may be provided on multiple chips. The multiple chips may be integrated into one device or may be provided on multiple devices. The program is recorded on a non-transitory recording medium such as a computer-readable ROM, an optical disk, or a hard disk drive. The program may be stored in the recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet.

[0064] According to this embodiment, the rotation angle of the shutter curtain 30 in a specific state is set based on the change in the current value per unit change in the position in the rotation, so the rotation angle can be set even when there is no change in the current value due to the reaction force. In addition, since the rotation angle is set even when there is no change in the current value due to the reaction force, the position at which the shutter curtain should be stopped can be easily set. In addition, since the rotation angle of the ventilation state is set based on the change in the current value per unit change in the position in the rotation, the rotation angle can be set even when there is no change in the current value due to the reaction force. In addition, since the rotation angle of the shutter curtain 30 in an open state or in a state where the shutter curtain 30 closes the opening is set based on the change in the slope of the current value, the position at which the shutter curtain should be stopped can be easily set.

[0065] An overview of one aspect of the present disclosure is as follows: An electric opening / closing body control device (80) according to one aspect of the present disclosure includes an electric motor unit (86) that outputs rotational power to a winding shaft (60) capable of winding up a shutter curtain (30), a control unit (422) that controls a current value for rotating the electric motor unit (86), a current value detection unit (424) that detects a current value output to the electric motor unit (86), and a setting unit (426) that sets a rotation angle of a specific state of the shutter curtain (30) based on a change in the current value detected by the current value detection unit (424) when the shutter curtain (30) is unwound from the winding shaft (60) and that is a change in the current value per unit change in position in the rotation of the electric motor unit (86).

[0066] In the shutter curtain (30), a plurality of slats are combined, and the plurality of slats in the shutter curtain (30) are slidable so that slits formed between two adjacent slats can be opened and closed. When the shutter curtain (30) is unwound from the winding shaft (60), each slit is open during the period in which the lower end of the shutter curtain (30) is lowered until it can no longer descend, and during the period in which the lower end of the shutter curtain (30) is closed from the air intake state in which it can no longer descend, the slits close in order starting from the lower slats, and the specific state set in the setting unit (426) may be the air intake state.

[0067] The setting unit (426) may obtain, as a gradient of the current value, a change in the current value detected by the current value detection unit (424) when winding the shutter curtain (30) around the winding shaft (60) or unwinding the shutter curtain (30) from the winding shaft (60), which is a change in the current value per unit change in the rotation angle in the rotation of the motor unit (86), and set the rotation angle of the shutter curtain (30) when it is open or when it is closing the opening, based on the change in the gradient of the current value.

[0068] The specific state set in the setting section (426) may be a state in which the shutter curtain (30) closes the opening.

[0069] When the shutter curtain (30) is wound around the winding shaft (60), the setting section (426) may set a rotation angle of the shutter curtain (30) to open the opening, based on the change in the current value detected by the current value detection section (424) and the change in the current value per unit change in position in the rotation of the motorized section (86).

[0070] The system may include an electric opening / closing body control device (80) and an electric opening / closing body connected to the electric opening / closing body control device (80).

[0071] The present disclosure has been described above based on the embodiments. These embodiments are merely illustrative, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present disclosure.

[0072] The shutter curtain 30 in this embodiment includes the slide member 36 and thus has the slits 38. However, the present invention is not limited to this, and for example, the shutter curtain 30 does not need to have the slits 38. According to this modification, the range of application of the present disclosure can be expanded.

[0073] The setting unit 426 in this embodiment determines whether the valve is in the fully open state or the fully closed state based on the change in the slope of the current value. However, the present invention is not limited to this, and the setting unit 426 may determine whether the valve is in the fully open state or the fully closed state based on the slope of the current value. According to this modification, the processing can be simplified.

[0074] In this embodiment, the motorized unit 80 and the controller 300 are connected by a communication line 200, and the motorized unit 80 and the controller 300 perform wired communication. Therefore, the controller 300 transmits an instruction signal to the motorized unit 80 by wired communication. However, this is not limited to this, and for example, the motorized unit 80 and the controller 300 may perform wireless communication. In this case, the first wired communication unit 412 included in the motorized unit 80 becomes the first wireless communication unit, and the first connection unit 410 becomes the first antenna. In addition, the second wired communication unit 314 included in the controller 300 becomes the first wireless communication unit, and the second connection unit 316 becomes the second antenna. A known technology may be used for processing the wireless communication by the first wireless communication unit and the second wireless communication unit. With this configuration, the controller 300 transmits an instruction signal to the motorized unit 80 by wireless communication. Furthermore, the controller 300 may be realized by a communication device such as a smartphone. In this case, the operation unit 310 is an interface provided in the communication device, and the operation control unit 312 is an application program installed in the communication device. With this configuration, the communication device transmits a command signal by wireless communication to the motorizing unit 80. According to this modification, the degree of freedom in configuration can be improved. [Explanation of symbols]

[0075] 10 opening, 12 sash, 14 underside, 20 guide rail, 30 shutter curtain, 32 slat, 33 seat plate, 34 screw, 36 slide member, 38 slit, 40 shutter case, 42 bracket, 44 support shaft, 60 winding shaft, 62 rotating frame, 64 driven wheel, 66 winding spring, 72 fixed part, 80 motorized unit (electric opening / closing body control device), 82 main body, 84 driving wheel, 86 motor (electric part), 88 control part, 90 reducer, 200 communication line, 300 controller, 310 operation part, 312 operation control part, 314 second wired communication part, 316 second connection part, 410 first connection part, 412 first wired communication part, 414 position control section, 416 position detection section, 418 speed control section, 420 differentiation section, 422 current control section (control section), 424 current value detection section, 426 setting section, 1000 shutter system.

Claims

1. an electric motor that outputs rotational power to a winding shaft capable of winding up the shutter curtain; A control unit that controls a current value for rotating the motor unit; a current value detection unit that detects the current value output to the motor unit; a setting unit that sets a rotation angle of the shutter curtain in a specific state based on a change in the current value detected by the current value detection unit when the shutter curtain is unwound from the winding shaft and based on a change in the current value per unit change in position in the rotation of the motor unit, In the shutter curtain, a plurality of slats are combined, The plurality of slats in the shutter curtain are slidable so that a slit formed between two adjacent slats can be opened and closed, When the shutter curtain is unwound from the winding shaft, each slit is open during the descent period until the lower end of the shutter curtain can no longer descend, and the slits close sequentially from the lower side during the closing period from the air intake state when the lower end of the shutter curtain can no longer descend, The specific state set by the setting unit is the ventilation state.

2. The setting unit, when winding the shutter curtain onto the winding shaft or unwinding the shutter curtain from the winding shaft, acquires the change in the current value detected by the current value detection unit, and the change in the current value per unit change in the rotation angle in the rotation of the electric unit, as the slope of the current value, and sets the rotation angle when the shutter curtain is open or when the shutter curtain closes the opening based on the change in the slope of the current value.

3. an electric motor that outputs rotational power to a winding shaft capable of winding up the shutter curtain; A control unit that controls a current value for rotating the motor unit; a current value detection unit that detects the current value output to the motor unit; a setting unit that sets a rotation angle of the shutter curtain in a specific state based on a change in the current value detected by the current value detection unit when the shutter curtain is unwound from the winding shaft and based on a change in the current value per unit change in position in the rotation of the motor unit, The setting unit is an electric opening / closing body control device that acquires the change in the current value detected by the current value detection unit when the shutter curtain is wound onto the winding shaft or when the shutter curtain is unwound from the winding shaft, and obtains the change in the current value per unit change in the rotation angle in the rotation of the electric unit as the slope of the current value, and sets the rotation angle when the shutter curtain is open or when the shutter curtain closes the opening based on the change in the slope of the current value.

4. The electric opening / closing body control device according to claim 1 , wherein the specific state set by the setting unit is a state in which the shutter curtain closes the opening.

5. The electric opening / closing body control device as described in claim 4, wherein the setting unit sets the rotation angle at which the shutter curtain opens the opening based on the change in the current value detected by the current value detection unit when the shutter curtain is wound around the winding shaft, and based on the change in the current value per unit change in position in the rotation of the electric unit.

6. The electric opening / closing member control device according to any one of claims 1 to 3, An electric opening / closing body connected to the electric opening / closing body control device; An electric opening and closing system.

7. A program executed by the electric opening / closing member control device according to any one of claims 1 to 3.

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