Control system

Abstract

To provide a control system that can improve the usability of an opening / closing device.SOLUTION: A control system 50 includes: an opening / closing movement control unit capable of performing first opening / closing control and second opening / closing control; and a return setting unit for setting a limit position when a setting timing arrives, triggered by an end of an opening / closing body 30 on the closing direction side reaching a reference position PP by the first opening / closing control and / or the second opening / closing control. When the setting timing arrives and a first operation instruction is accepted via an operating device 60, the opening / closing movement control unit sets a first overload determination value for determining an overload state of an opening / closing device 40 based on a learning value acquired before the setting timing arrives, determines whether the opening / closing device 40 is in an overload state based on the first overload determination value, and performs the first opening / closing control based on the determination result.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a control system. [Background technology]

[0002] Conventionally, a technology has been proposed for a shutter device attached to an opening in a building, in which the fully closed and fully open positions of the opening / closing body and a reference position for controlling the opening / closing position of the opening / closing body have been set, and then the reference position setting is lost when the power to the shutter device is turned off (for example, due to a power outage, etc.). This technology allows for resetting the fully closed and fully open positions.

[0003] In such a technology, for example, when an operation instruction (hereinafter referred to as an "opening operation instruction") to move the opening / closing body to the open position is received after the power supply to the shutter device has been restored after a power outage, the opening / closing body is moved to the open position, and then when the position of the end of the opening / closing body in the closing direction reaches a reference position, a technology is disclosed in which a fully closed position and a fully open position are calculated and set by subtracting or adding a predetermined operating amount to the reference position (see, for example, Patent Document 1).

[0004] Furthermore, with the above-described technology, when an operation instruction (hereinafter referred to as a "closing operation instruction") to move the opening / closing body in the closed position is received after the power supply to the shutter device has been restored after a power outage, damage to the opening / closing body can be suppressed by restricting the closing movement of the opening / closing body (specifically, by preventing the opening / closing body from moving in the closed position). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-35221 Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-described conventional technology, as described above, when a closing operation instruction is received after the power supply to the shutter device is restored after a power outage, the closing movement of the opening / closing body is restricted. Therefore, for example, even if a closing operation instruction is received, the opening / closing body cannot be moved open or closed, which may lead to a user mistaking the shutter device for a malfunction. In particular, when the reference position is located above the fully open position and the end of the opening / closing body in the closing direction is positioned at the fully open position immediately after the power supply to the shutter device is restored after a power outage, the opening / closing body cannot be moved open even if a closing operation instruction is received. This may lead to a user mistaking the shutter device for a malfunction, making it difficult to smoothly reset the fully closed and fully open positions. Therefore, there is room for improvement in terms of usability of the opening / closing device.

[0007] The present invention is intended to solve the above-mentioned problems in the prior art, and has an object to provide a control system that can improve the usability of a switching device. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems and achieve the object, the control system according to claim 1 is a control system for controlling an opening / closing device having an opening / closing body that opens and closes an opening of a building, the control system comprising: an operating means for receiving an operation instruction related to the opening / closing device; and an opening / closing movement control means for controlling the opening / closing movement of the opening / closing body via a drive means for moving the opening / closing body open or closed based on the operation instruction received via the operating means, the opening / closing movement control means being capable of performing a first opening / closing control that is a control for moving the opening / closing body so that an end portion of the opening / closing body on the closing direction side moves away from a reference position that is preset in the control system and serves as a reference for controlling the opening / closing movement of the opening / closing body; and a second opening / closing control that is a control for moving the opening / closing body so that the end portion of the opening / closing body on the closing direction side approaches the reference position. and a reset setting means for setting the limit position when a setting timing arrives for resetting a limit position for limiting the opening / closing movement of the opening / closing body, triggered by the end of the opening / closing body on the closing direction side reaching the reference position by the first opening / closing control and / or the second opening / closing control. When the setting timing arrives and a first operation instruction, which is the operation instruction to perform the first opening / closing control, is accepted via the operation means, the opening / closing movement control means sets a first overload determination value for determining an overload state of the drive means based on a learned value that is acquired before the setting timing arrives and indicates a load at the time of opening / closing movement of the drive means, determines whether the drive means is in an overload state based on the set first overload determination value, and performs the first opening / closing control based on the determination result.

[0009] A control system according to a second aspect of the present invention is the control system according to the first aspect, wherein the first overload determination value is based on a maximum load value of the learned value.

[0010] The control system of claim 3 is the control system of claim 1 or 2, wherein when the set timing arrives, the opening / closing movement control means, when determining whether the drive means is in an overload state based on the set first overload determination value, restricts the first opening / closing control if the number of times the drive means is determined to be in an overload state when the position of the closing direction end of the opening / closing body is the same is greater than or equal to a threshold, or if the number of times the drive means is determined to be in an overload state is greater than or equal to a threshold, regardless of the position of the closing direction end of the opening / closing body.

[0011] The control system of claim 4 is the control system of claim 1 or 2, wherein when the set timing arrives and the first operation instruction is accepted via the operation means, the opening / closing movement control means determines whether the distance by which the opening / closing body has been moved to open or close during the first opening / closing control has reached the distance of the distance judgment value obtained before the set timing arrives, and if it is determined that the distance of the distance judgment value has been reached, the control means limits the first opening / closing control regardless of the determination result of whether the drive means is in an overload state.

[0012] The control system of claim 5 is the control system of claim 1 or 2, wherein when the set timing arrives and a second operation instruction, which is the operation instruction to perform the second opening / closing control, is received via the operation means, the opening / closing movement control means determines whether the driving means is in an overload state based on a second overload determination value that is set in advance in the control system and indicates a load amount of the driving means different from the first overload determination value, and is used to determine an overload state of the driving means, and performs the second opening / closing control based on the determination result.

[0013] The control system described in claim 6 is the control system described in claim 5, wherein the reference position is the position of the end of the opening in the opening direction or a position nearby, and the load amount of the driving means indicated by the first overload judgment value is smaller than the load amount of the driving means indicated by the second overload judgment value. [Effects of the Invention]

[0014] According to the control system of claim 1, the control system includes an opening / closing movement control means that controls the opening / closing movement of the opening / closing body via a drive means that moves the opening / closing body open and closed based on an operation instruction received via an operation means, the opening / closing movement control means being capable of performing first opening / closing control and second opening / closing control, and a return setting means that, when the set timing arrives, is triggered by the end of the opening / closing body on the closing direction side reaching a reference position through the first opening / closing control or / and the second opening / closing control.When the set timing arrives and the first operation instruction is received via the operation means, the opening / closing movement control means sets a first overload judgment value, determines whether the drive means is in an overload state based on the set first overload judgment value, and performs the first opening / closing control based on the judgment result.Therefore, compared to conventional technology (technology that restricts the closing movement of the shutter curtain when a closing operation instruction is received after the power to the shutter device has been powered off and then restored), when the first operation instruction is received after the set timing arrives, the opening / closing movement of the opening / closing body can be reliably performed, and the limit position can be re-set through the first opening / closing control or / and the second opening / closing control. This prevents the user from mistaking the opening / closing device for a malfunction, thereby improving usability of the opening / closing device. Furthermore, when the first opening / closing control is performed after the set timing arrives, it is possible to avoid malfunction or damage to the opening / closing body and / or drive means, thereby further improving usability of the opening / closing device.

[0015] According to the control system described in claim 2, the first overload judgment value is based on the maximum load value of the learned value, so that first opening and closing control can be performed which makes it easier to ensure the usability of the opening and closing device, and the controllability of the first opening and closing control can be improved.

[0016] According to the control system described in claim 3, when the set timing arrives, the opening / closing movement control means, when determining whether the drive means is in an overload state based on the set first overload determination value, restricts the first opening / closing control if the number of times the drive means is determined to be in an overload state when the position of the end of the opening / closing body on the closing direction side is the same is greater than or equal to a threshold value, or if the number of times the drive means is determined to be in an overload state is greater than or equal to a threshold value regardless of the position of the end of the opening / closing body on the closing direction side.This prevents the first opening / closing control from being performed unnecessarily, and further prevents breakdowns or damage to the opening / closing body and / or drive means.

[0017] According to the control system described in claim 4, when the set timing arrives and the first operation instruction is accepted via the operation means, the opening / closing movement control means determines whether the distance by which the opening / closing body has been moved to open or close during the first opening / closing control has reached the distance determination value, and if it is determined that the distance has reached the distance determination value, it limits the first opening / closing control regardless of the determination result of whether the drive means is in an overload state, thereby further avoiding the first opening / closing control being performed unnecessarily and further avoiding breakdowns or damage to the opening / closing body and / or drive means.

[0018] According to the control system described in claim 5, when the set timing arrives and the second operation instruction is received via the operation means, the opening / closing movement control means determines whether the drive means is in an overload state based on the second overload determination value, and performs the second opening / closing control based on the determination result.Therefore, the accuracy of determining whether the drive means is in an overload state can be made different in the first opening / closing control and the second opening / closing control, and the first opening / closing control and the second opening / closing control can be performed according to the situation.

[0019] According to the control system of claim 6, the reference position is the position of the end of the opening in the opening direction or a position nearby, and the load amount of the drive means indicated by the first overload judgment value is set smaller than the load amount of the drive means indicated by the second overload judgment value. Therefore, the judgment accuracy of the first opening / closing control can be set stricter than the judgment accuracy of the second opening / closing control compared to when the load amount of the drive means indicated by the first overload judgment value is larger than the load amount of the drive means indicated by the second overload judgment value, making it easier to avoid breakdowns or damage to the opening / closing body and / or drive means. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a diagram conceptually showing an opening and closing device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a block diagram showing the electrical configuration of a control device. [Figure 3] 10 is a flowchart of an opening / closing process according to an embodiment. [Figure 4] 10 is a flowchart of a first control mode process. [Figure 5] 10 is a flowchart of a second control mode process. [Figure 6] 5 is a diagram showing an outline of learned value information and a first overload determination value. FIG. [Figure 7] 10 is a flowchart of a third control mode process. [Figure 8] 10 is a flowchart of a fourth control mode process. [Figure 9] 9 is a flowchart of the fourth control mode process following FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0021] An embodiment of a control system according to the present invention will be described in detail below with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] specific details of the embodiment will be described, and finally, [III] modifications to the embodiment will be described. However, the present invention is not limited to the embodiment.

[0022] [I] Basic Concept of the Embodiment First, the basic concept of the embodiment will be described. The embodiment generally relates to a control system for controlling an opening and closing device having an opening and closing body that opens and closes an opening in a building.

[0023] Here, the term "building" refers to any specific structure or type, but is a concept that includes, for example, a detached house, a housing complex such as an apartment or condominium, an office building, a commercial facility, and a public facility.

[0024] Furthermore, an "opening in a building" is an opening formed in a part of the building's framework (for example, a wall, floor, ceiling, etc.) for installing an entrance or window.

[0025] An opening and closing device is a device attached to an opening in a building for the purpose of crime prevention or fire prevention, and is a concept that includes all types of shutter devices and door devices that can be electrically driven, such as lightweight shutters, etc. The opening and closing directions of an opening and closing device include, for example, up and down, left and right, front and back, etc.

[0026] Furthermore, the "open / closed state of the opening / closing body" is a concept that includes, for example, a "fully closed state," a "fully open state," and a "half-open state."

[0027] Of these, the "fully closed state" is a state in which the opening is fully closed by the opening / closing body, and the position of the opening / closing body in this fully closed state is referred to as the "fully closed position." The "fully open state" is a state in which the opening is fully opened by the opening / closing body, and the position of the opening / closing body in this fully open state is referred to as the "fully open position." The "half-open state" is a state in which the opening / closing body is positioned between the fully closed position and the fully open position, and the position of the opening / closing body in the half-open state is referred to as the "half-open position."

[0028] In the following embodiments, a case will be described in which the opening and closing device is a lightweight electric shutter that opens and closes up and down and is provided at the entrance and exit of a garage of a building such as a detached house.

[0029] [II] Specific details of the embodiment Next, specific details of the embodiment will be described.

[0030] (composition) First, the configuration of a switching device 1 to which a control system 50 according to an embodiment is applied will be described.

[0031] In the following description, the X direction in FIG. 1 is referred to as the left-right direction of the opening and closing device 1 (the -X direction is the left direction of the opening and closing device 1, and the +X direction is the right direction of the opening and closing device 1), the Y direction in FIG. 1 is referred to as the up-down direction of the opening and closing device 1 (the +Y direction is the up direction of the opening and closing device 1, and the -Y direction is the down direction of the opening and closing device 1), and the direction perpendicular to the X and Y directions is referred to as the front-to-back direction (the direction leading to the front side of the paper in FIG. 1 is the front direction of the opening and closing device 1 (toward the outside of the building), and the direction leading to the back side of the paper in FIG. 1 is the rear direction of the opening and closing device 1 (toward the inside of the building)).

[0032] As shown in FIG. 1, the opening / closing device 1 generally includes a storage section 10, a guide rail 20, an opening / closing body 30, an opening / closing machine 40, a winding shaft (not shown), and a control system 50.

[0033] It should be noted that the configuration of the opening and closing device 1 that is not specifically mentioned is the same as that of the conventional device, and therefore the description thereof will be omitted.

[0034] Furthermore, the components that make up this switching device 1 may be connected in any manner, but in this embodiment, they are set as follows.

[0035] That is, the control device 90 of the control system 50 described later is electrically connected to each of the opening / closing device 40, the operating device 60 of the control system 50 described later, the position detection unit 70, and the rotation speed detection unit 80 via wiring 3.

[0036] This allows communication or power supply to be performed directly or indirectly between the control device 90 described later and the opening / closing device 40, the operating device 60 described later, the position detection unit 70 described later, or the rotation speed detection unit 80 described later.

[0037] The method of attaching (or connecting) the various components that make up the opening and closing device 1 to each other is arbitrary, but for example, a method is used in which the attachment side component is attached (or connected) to the attachment side component via an attachment hole (for example, a rivet hole, a screw hole, a screw hole, etc.) formed in the attachment side component or the attachment side component using a fastener (for example, a rivet, an attachment screw, a screw, etc.), welding, an adhesive, double-sided tape, etc.

[0038] (Configuration - Storage section) The storage section 10 is a hollow body for storing each part of the opening and closing device 1. As shown in Fig. 1, the storage section 10 is installed above the upper end of the opening 2 in the wall of the building.

[0039] In addition, the storage section 10 contains the opening / closing mechanism 40, the winding shaft, and the position detection section 70, rotation speed detection section 80, and control device 90 of the control system 50 described later, and when the opening / closing body 30 is wound up on the winding shaft, at least a portion of the opening / closing body 30 is also contained inside the storage section 10.

[0040] (Configuration - Guide rail) The guide rail 20 guides the opening / closing body 30 to move along the opening / closing direction (vertical direction) of the opening 2. The guide rail 20 is an elongated body formed so that its cross section is roughly U-shaped, and is disposed at each of the left and right ends of the opening / closing device 1 in a direction roughly along the vertical direction, and is fixed directly to the wall of the building or indirectly via a base material (not shown).

[0041] (Configuration - Opening and closing body) The opening / closing body 30 is a shielding means that is moved to a closed or opened state by the winding shaft, thereby changing the opening / closing state of the opening / closing body 30 to a fully open state, a fully closed state, or a half open state. As shown in Fig. 1, the opening / closing body 30 is configured with a plurality of slats 31, and the plurality of slats 31 are fitted and connected to each other via fitting portions (not shown) formed on both the upper and lower ends of each slat 31.

[0042] In addition, each of the left and right ends of this opening / closing body 30 is inserted into the inside of the guide rail 20 through the U-shaped open end of the guide rail 20, and is able to slide inside the guide rail 20 in the vertical direction, and is restricted from falling out of the guide rail 20 in the front-to-back direction.

[0043] A seat plate 32 is connected to the end portion of the opening / closing body 30 on the closing direction side (specifically, the lower end portion of the opening / closing body 30; hereinafter referred to as the "closing direction side end portion").

[0044] The seat plate 32 is arranged so as to be close to or in contact with the floor surface of the building in the fully closed state, and is formed over the entire length in the left-right direction of the closing direction end of the opening / closing body 30.

[0045] (Configuration - Opening and closing mechanism) The opening / closing device 40 is a driving means for rotating the winding shaft to open and close the opening / closing body 30. The opening / closing device 40 is configured using, for example, a known opening / closing device, and is configured with an output shaft, a drive unit, a brake unit, a power supply unit, and a control unit (all of which are not shown).

[0046] Of these, the output shaft is for transmitting the rotational force transmitted from the drive unit to the winding shaft via a clutch (not shown). The brake unit acts on the output shaft to brake the rotation of the winding shaft. The drive unit drives the opening / closing body 30 by electrically rotating the output shaft. The power supply unit supplies power supplied from a commercial power source (not shown) to each part of the opening / closing device 40. The control unit is a control means for controlling each part of the opening / closing device 40, and also controls the opening and closing of the opening / closing body 30 based on output from a control device 90 (described later).

[0047] Furthermore, the specific operation of the opening and closing device 40 is arbitrary, but in this embodiment, it operates as follows.

[0048] That is, when the opening / closing device 40 and the winding shaft are connected via the clutch by manual operation, a signal indicating this (hereinafter referred to as a "clutch connection signal") is output to the control device 90, which will be described later.

[0049] Furthermore, when the connection between the open / close device 40 and the winding shaft by the clutch is released by manual operation, a signal indicating this (hereinafter referred to as a "clutch release signal") is output to the control device 90, which will be described later.

[0050] (Configuration - Winding shaft) The winding shaft is a rotating shaft for closing or opening the opening / closing body 30. This winding shaft is configured using, for example, a known winding shaft or the like, and is installed along the left-right direction.

[0051] In addition, a connecting slat (not shown) connected to the upper end of the opening / closing body 30 is connected to this winding shaft, and by rotating this winding shaft, the opening / closing body 30 can be moved to close or open via the connecting slat.

[0052] In addition, the left end (or right end) of this winding shaft is connected to the output shaft of the opening / closing machine 40 via a chain (not shown) and a clutch, so the winding shaft can be rotated in conjunction with the rotation of the output shaft of the opening / closing machine 40.

[0053] (Configuration-Control System) Next, the configuration of the control system 50 will be described.

[0054] The control system 50 is for controlling the opening and closing device 1, and includes an operating device 60, a position detection unit 70, a rotation speed detection unit 80, and a control device 90, as shown in FIG.

[0055] (Configuration - Control System - Operation Device) The operating device 60 is an operating means for receiving operating instructions related to the opening and closing device 1. As shown in Fig. 1, the operating device 60 is provided near the opening 2, and is configured using, for example, a known operating device for a shutter device.

[0056] Specifically, the operating device 60 is equipped with an open button that instructs the opening / closing body 30 to be moved electrically to the open position, a close button that instructs the opening / closing body 30 to be moved electrically to the closed position, and a stop button that instructs the closing or opening movement to be stopped electrically (all not shown).

[0057] Furthermore, the specific operation of the operating device 60 is arbitrary, but in this embodiment, it operates as follows.

[0058] That is, when the open button, close button, or stop button is pressed by the user, an operation signal (i.e., open signal, close signal, stop signal) corresponding to the pressed button is output to the opening / closing device 40 via the control device 90. As a result, the opening / closing device 40 can electrically move the opening / closing body 30 to close or open, or electrically stop the opening or closing movement of the opening / closing body 30.

[0059] Furthermore, when the open button, close button, or stop button is operated multiple times within a predetermined time (for example, pressing the close button three times while pressing the stop button), a signal corresponding to the operation is output to the control device 90. This makes it possible to set a first restricting position P1, which will be described later, and a second restricting position P2, which will be described later.

[0060] In the embodiment, the operation device 60 is described as communicating with the control device 90 via a wired connection, but this is not limiting. For example, the operation device 60 may communicate with the control device 90 wirelessly. Furthermore, both a wired type and a wireless type operation device 60 may be provided.

[0061] (Configuration - Control system - Position detection unit, rotation speed detection unit) The position detection unit 70 is a position detection means for detecting the position of the closing direction end of the opening / closing body 30 and outputting a signal indicating the detected position (hereinafter referred to as a "position signal") at a predetermined period, and is provided in the vicinity of the opening / closing device 40 as shown in Figure 1.

[0062] The rotation speed detection unit 80 is a rotation speed detection means for detecting the rotation speed of the drive unit of the switchgear 40 (hereinafter referred to as "rotation speed of the drive unit") and outputting a signal indicating the detected rotation speed (hereinafter referred to as "rotation speed signal") at a predetermined cycle, and is also an overload state detection means used to detect an overload state of the switchgear 40 (specifically, the drive unit). As shown in FIG. 1, the rotation speed detection unit 80 is provided in the vicinity of the switchgear 40.

[0063] Furthermore, the specific configurations of the position detection unit 70 and the rotation speed detection unit 80 are arbitrary, but in the embodiment, they are configured using a Hall IC or the like that has the functions of both the position detection unit 70 and the rotation speed detection unit 80.

[0064] However, the present invention is not limited to this. For example, the position detector 70 may be configured using a potentiometer or the like, and the rotation speed detector 80 may be configured using a tachogenerator or the like.

[0065] The "rotation speed of the drive unit" mentioned above corresponds to the "load amount of the drive means." Specifically, the higher the rotation speed of the drive unit, the lower the load amount of the drive unit, and vice versa.

[0066] (Configuration - Control System - Control Device) The control device 90 is a device that interconnects the various parts of the switching device 1, and includes an input unit 91, an output unit 92, a power supply unit 93, a control unit 94, and a storage unit 95, as shown in FIG.

[0067] (Configuration - Control system - Control device - Input section) The input unit 91 is an input means that receives input of various signals (e.g., operation signals, position signals, rotation speed signals, clutch engagement signals, clutch release signals, etc.) from the operation device 60, the position detection unit 70, the rotation speed detection unit 80, or the opening / closing machine 40, and is configured using, for example, known input terminals, etc.

[0068] (Configuration - Control system - Control device - Output section) The output unit 92 is an output means for outputting various signals to the switch 40 and the like, and is configured using, for example, known output terminals and the like.

[0069] (Configuration - Control system - Control device - Power supply unit) The power supply unit 93 is a power supply means that supplies power from a commercial power source or a battery (e.g., a battery, etc.) not shown to each part of the control device 90, as well as to the operating device 60, the position detection unit 70, and the rotation speed detection unit 80.

[0070] (Configuration - Control system - Control device - Control unit) The control unit 94 is a control means that controls each unit of the control device 90. Specifically, the control unit 94 is a computer that includes a CPU, various programs that are interpreted and executed on the CPU (including basic control programs such as an OS, and application programs that are started on the OS and realize specific functions), and an internal memory such as a RAM for storing the programs and various data.

[0071] As shown in FIG. 2, the control unit 94 conceptually includes an opening / closing movement control unit 94a and a return setting unit 94b.

[0072] (Configuration - Control system - Control device - Control unit - Opening / closing movement control unit) The opening / closing movement control unit 94a is an opening / closing movement control means that controls the opening / closing movement of the opening / closing body 30 based on operation instructions received via the operating device 60, and is an opening / closing movement control means that is capable of performing first opening / closing control and second opening / closing control.

[0073] Here, "first opening / closing control" refers to control performed in the fourth control mode described later, which moves the opening / closing body 30 to open or close so that the closing direction side end of the opening / closing body 30 moves away from a reference position PP previously set in the control system 50 (in the embodiment, the reference position PP set in the second control mode processing described later).

[0074] In addition, the "second opening / closing control" refers to the control performed in the fourth control mode described later, which moves the opening / closing body 30 to open or close so that the closing direction side end of the opening / closing body 30 approaches the reference position PP.

[0075] Moreover, the "reference position PP" refers to a position that serves as a reference for controlling the opening and closing movement of the opening and closing body 30.

[0076] In the embodiment, this reference position PP is set at or near the end (upper end) of the opening 2 in the opening direction. Specifically, as shown in Fig. 1, this will be described as a position near the upper end of the opening 2, a position above a limiting position described below, and a position where the closing direction end of the opening / closing body 30 abuts against the lower end of the storage section 10 (or the ceiling of the building).

[0077] (Configuration - Control system - Control device - Control unit - Reset setting unit) The return setting unit 94b is a return setting means for setting the limit position when the setting timing arrives.

[0078] Here, the "setting timing" refers to the timing at which the limiting position previously set in the control system 50 (in the embodiment, the limiting position set in the first control mode process described later) is set again. This setting timing is a concept that includes, for example, the timing at which the power supply to the opening and closing device 1 is turned off due to a power outage or manually, and / or the timing at which the connection between the opening and closing device 40 and the winding shaft by the clutch of the opening and closing device 40 is released.

[0079] Moreover, the term "restriction position" refers to a position for restricting the opening / closing movement of the opening / closing body 30, and in the embodiment, this corresponds to the first restriction position P1 and the second restriction position P2.

[0080] Of these, the "first limit position P1" will be described as an upper limit position for limiting the opening movement of the opening / closing body 30 (for example, a fully open position or a position nearby thereto), as shown in FIG.

[0081] Further, the "second limit position P2" will be described as a lower limit position for limiting the closing movement of the opening / closing body 30 (for example, a fully closed position or a position nearby thereto), as shown in FIG.

[0082] The processing executed by the control unit 94 will be described in detail later.

[0083] (Configuration - Control system - Control device - Storage unit) Returning to Figure 2, the memory unit 95 is a memory means for storing programs and various data necessary for the operation of the control device 90, and is configured using a rewritable recording medium, and can use a non-volatile recording medium such as a flash memory.

[0084] (Opening and closing process) Next, the opening and closing process executed by the control unit 94 of the control device 90 of the control system 50 will be described.

[0085] In the following description, steps will be abbreviated as "S" in the explanation of each process shown in FIGS. 3 to 5 and 7 to 9.

[0086] The opening / closing process is a process for controlling the opening / closing movement of the opening / closing body 30.

[0087] The timing for executing this opening / closing process is arbitrary, but in the embodiment, it is described as being started after the power supply of the opening / closing device 1 is turned on.

[0088] (Opening and closing process - premise) Next, the premise of the opening and closing process in this embodiment is as follows.

[0089] That is, the description will be given assuming that the opening / closing state of the opening / closing body 30 is in the fully closed state, and that the first restricted position information described below, the second restricted position information described below, and the reference position information described below are not stored in the memory unit 95.

[0090] Furthermore, the control modes of the control system 50 will be described as including a "first control mode," a "second control mode," a "third control mode," and a "fourth control mode."

[0091] Of these, the "first control mode" is a control mode for setting the first restriction position P1 and the second restriction position P2.

[0092] In addition, the "second control mode" is a control mode for linking the control position of the opening / closing body 30 with the load amount of the drive unit of the opening / closing device 40 that drives the opening / closing body 30 (specifically, the rotation speed of the drive unit).

[0093] The "third control mode" is a control mode for performing opening and closing movements of the opening-closing body 30 (so-called normal control mode).

[0094] The "fourth control mode" is a control mode for resetting the first restriction position P1 and the second restriction position P2 after the setting timing has arrived.

[0095] (Opening and closing process - Opening and closing process details) Next, the opening and closing process will be described in detail.

[0096] When the opening / closing process is started, as shown in FIG. 3, the control unit 94 sets the control mode to the first control mode at SA1 and starts the first control mode process.

[0097] (Opening and closing process - Opening and closing process details - First control mode process) Next, the first control mode process of SA1 in FIG. 3 will be described.

[0098] The first control mode process is a process for setting the first restriction position P1 and the second restriction position P2.

[0099] When the first control mode process is started, as shown in FIG. 4, the control unit 94 sets the first limit position P1 (specifically, the upper limit position) in SB1.

[0100] The first limit position P1 may be set in any manner, but in this embodiment it is set as follows.

[0101] That is, first, the opening / closing movement control section 94a opens / closes the opening / closing body 30 (specifically, the closing direction side end of the opening / closing body 30) to a predetermined position.

[0102] Specifically, the opening / closing movement control unit 94a opens and closes the opening / closing body 30 based on an operation signal (specifically, an open signal, a close signal, or a stop signal) received as input from the operating device 60 through a predetermined operation. The details of the control of this opening / closing movement are substantially the same as the specific processing of SD5 described later, and specifically, it controls the opening / closing movement of the opening / closing body 30 corresponding to the push-off operation described later.

[0103] However, the present invention is not limited to this, and for example, the opening / closing movement control unit 94a may automatically move the opening / closing body 30 to the predetermined position in an open state without relying on the operation signal at the same time as the start of processing of SB1. In this case, the opening movement may be stopped when a stop signal is received.

[0104] Next, when the opening / closing body 30 reaches the above-mentioned predetermined position, the control unit 94 sets the predetermined position as the first restriction position P1 based on the first setting signal (a signal for determining the first restriction position P1) received as input from the operating device 60 by a predetermined operation, and stores information indicating the set first restriction position P1 (hereinafter referred to as "first restriction position information") in the memory unit 95.

[0105] In SB2, the control section 94 sets the second limit position P2 (specifically, the lower limit position), and then ends the first control mode process, returning to the opening / closing process of FIG.

[0106] The second limit position P2 may be set in any manner, but in this embodiment it is set as follows.

[0107] That is, first, the opening / closing movement control section 94a opens / closes the opening / closing body 30 to a predetermined position different from the first limit position P1.

[0108] Specifically, the opening / closing movement control unit 94a opens and closes the opening / closing body 30 based on an operation signal received as input from the operating device 60 through a predetermined operation. The details of the control of this opening / closing movement are substantially the same as the specific processing of SD5 described later, and specifically, it controls the opening / closing movement of the opening / closing body 30 in response to a push-off operation described later.

[0109] However, the present invention is not limited to this, and for example, the opening / closing movement control unit 94a may automatically close the opening / closing body 30 to the predetermined position without relying on the operation signal at the same time as the start of processing SB2. In this case, the closing movement may be stopped when a stop signal is received.

[0110] Next, when the opening / closing body 30 reaches the above-mentioned predetermined position, the control unit 94 sets the predetermined position as the second restriction position P2 based on the second setting signal (a signal for determining the second restriction position P2) input from the operating device 60 by a predetermined operation, and stores information indicating the set second restriction position P2 (hereinafter referred to as ``second restriction position information'') in the memory unit 95.

[0111] By performing such first control mode processing, the first restricting position P1 and the second restricting position P2 can be set via the operating device 60. Therefore, compared to when the first restricting position P1 and the second restricting position P2 are automatically set, the first restricting position P1 and the second restricting position P2 can be set in accordance with the needs of the user, thereby improving the usability of the opening and closing device 1.

[0112] Returning to FIG. 3, at SA2, the control unit 94 switches the control mode from the first control mode to the second control mode and starts the second control mode process.

[0113] (Opening and closing process - Opening and closing process details - Second control mode process) Next, the second control mode process of SA2 in FIG. 3 will be described.

[0114] The second control mode process is a process for linking the control position of the opening / closing body 30 and the load amount of the drive unit of the opening / closing device 40.

[0115] When the second control mode process is started, the control unit 94 sets the reference position PP in SC1 as shown in FIG.

[0116] The method for setting this reference position PP is arbitrary, but in this embodiment it is set as follows.

[0117] That is, first, the opening / closing movement control unit 94a moves the opening / closing body 30 to a predetermined position (specifically, a position where the closing direction side end of the opening / closing body 30 abuts the lower end of the storage section 10) (note that in this embodiment, the opening / closing movement of the opening / closing body 30 is not stopped based on the first limiting position P1 and the second limiting position P2 until the processing of SC1 is completed).

[0118] Specifically, the opening / closing movement control unit 94a opens and closes the opening / closing body 30 based on an operation signal input from the operating device 60 through a predetermined operation. The details of the control of this opening / closing movement are substantially the same as the specific processing of SD5 described later, and specifically, it controls the opening / closing movement of the opening / closing body 30 corresponding to a self-holding operation described later.

[0119] However, the present invention is not limited to this, and for example, the opening / closing movement control unit 94a may automatically move the opening / closing body 30 to the predetermined position in an opening manner without relying on the operation signal at the same time as the start of processing of SC1. In this case, as will be described later, the opening movement may be stopped after it is determined that the number of rotations of the drive unit of the opening / closing device 40 is less than a threshold value.

[0120] Next, while continuing the opening and closing movement, the control unit 94 determines whether the rotation speed of the drive unit of the opening and closing device 40 is below a threshold value based on the rotation speed signal received as input from the rotation speed detection unit 80.

[0121] Next, when it is determined that the difference is less than the threshold value, the control unit 94 sets the predetermined position as the reference position PP based on the position signal received as input from the position detection unit 70, and stores information indicating the set reference position PP (hereinafter referred to as "reference position information") in the memory unit 95. Thereafter (specifically, after processing SC2, which will be described later), the opening / closing body 30 is automatically moved from the reference position PP to the first limit position P1 to close.

[0122] At SC2, the control unit 94 calculates the first distance and the second distance.

[0123] Here, the method for calculating the first distance is arbitrary, but in the embodiment, the control unit 94 calculates the distance from the first restriction position P1 set in SB1 to the reference position PP set in SC1, sets the calculated distance as the first distance, and stores information indicating the first distance (hereinafter referred to as "first distance information") in the memory unit 95.

[0124] Furthermore, the method for calculating the second distance is arbitrary, but in the embodiment, the control unit 94 calculates the distance from the second restriction position P2 set in SB2 to the reference position PP set in SC1, sets the calculated distance as the second distance, and stores information indicating the second distance (hereinafter referred to as "second distance information") in the memory unit 95.

[0125] However, this is not limited to this, and for example, the control unit 94 may calculate the distance from the first restriction position P1 set in SB1 to the second restriction position P2 set in SB2, and use the calculated distance as the second distance.

[0126] For example, in order to clarify the directionality of the distances for the first distance and second distance set above, the control unit 94 may add a plus sign and a minus sign to the first distance information and the second distance information.

[0127] As an example, the first distance information may be information indicating "-200 pulses" when the first limit position P1 is 1 m downward from the reference position PP, or information indicating "+200 pulses" when the first limit position P1 is 1 m upward from the reference position PP.

[0128] In SC3, the control unit 94 executes a process (hereinafter referred to as "cording process") to link the control position of the opening / closing body 30 with the load amount of the drive unit of the opening / closing device 40. Thereafter, the second control mode process ends, and the process returns to the opening / closing process of FIG.

[0129] The processing content of this linking process is arbitrary, but in this embodiment, it is as follows.

[0130] That is, the opening / closing movement control unit 94a moves the opening / closing body 30 to the closed position from the first restricting position P1 to the second restricting position P2 based on a closing signal received as input from the operating device 60 (for example, the closing movement may be caused by controlling the opening / closing movement of the opening / closing body 30 corresponding to the self-holding operation described below. However, this is not limited to this, and the closing movement may also be caused automatically at the same time as the start of processing SC3).

[0131] In addition, in parallel with the closing movement, the control unit 94 stores in the memory unit 95, in association with each other, information indicating the control position of the opening / closing body 30 (hereinafter referred to as "control position information"), information indicating the rotation speed of the drive unit (hereinafter referred to as "rotation speed information"), and information indicating a threshold value (the rotation speed of the drive unit minus a predetermined value) used to determine an overload state of the opening / closing device 40 (specifically, the drive unit) in the third control mode, based on the position signal and rotation speed signal received as input from the position detection unit 70 and the rotation speed detection unit 80.

[0132] In this embodiment, the control unit 94 handles each of the values of the control position information and the rotation speed information as a learned value, and stores the learned value information indicating the learned value separately in the storage unit 95 as shown in FIG. 6 (i.e., the learned value is acquired before the setting timing arrives).

[0133] Then, when the position of the closing direction side end of the opening / closing body 30 reaches the second limit position P2, the control unit 94 stops the closing movement of the opening / closing body 30 and also stops storing the control position information, rotation speed information, and threshold value information.

[0134] By performing such second control mode processing, the control position of the opening / closing body 30 and the load amount of the drive unit of the opening / closing device 40 can be linked, and the third control mode processing can be performed accurately and safely.

[0135] Returning to FIG. 3, at SA3, the control unit 94 switches the control mode from the second control mode to the third control mode and starts the third control mode process.

[0136] (Opening and closing process - Opening and closing process details - Third control mode process) Next, the third control mode process of SA3 in FIG. 3 will be described.

[0137] The third control mode process is a process for performing opening and closing movement of the opening-closing body 30.

[0138] When the third control mode process is started, as shown in FIG. 7, the control unit 94 determines in SD1 whether or not the setting timing has arrived.

[0139] The method for determining whether or not this set timing has arrived is arbitrary, but in this embodiment, from the viewpoint of accurately determining whether or not the set timing has arrived, the determination is made based on whether or not a signal indicating that power supply from the commercial power source has been stopped (hereinafter referred to as a "power supply stop signal") has been received from the power supply unit 93, or whether or not a clutch release signal has been received from the opening / closing device 40.

[0140] Here, if the input of the power supply stop signal or the clutch release signal is received, it is determined that the set timing has arrived, and if the input of the power supply stop signal or the clutch release signal is not received, it is determined that the set timing has not arrived.

[0141] However, the present invention is not limited to this, and the determination may be made based solely on whether or not the input of the power supply stop signal has been received.

[0142] Then, if the control unit 94 determines that the setting timing has arrived (SD1, Yes), it proceeds to SD2, and if it determines that the setting timing has not arrived (SD1, No), it proceeds to SD4.

[0143] In the embodiment, it has been described that only SD1 determines whether the setting timing has arrived, but this is not limiting. For example, it may be determined whether the setting timing has arrived in processes other than SD1 (e.g., the process of SD4) among the third control mode processes and / or in each process of the fourth control mode process, and if it is determined that the setting timing has arrived, the process may proceed to SD2.

[0144] In SD2, the control unit 94 determines whether or not the timing has come to return to the state before it was determined in SD1 that the setting timing had arrived (hereinafter referred to as "return timing").

[0145] The method for determining whether or not this return timing has arrived is arbitrary, but in this embodiment, from the viewpoint of accurately determining whether or not the return timing has arrived, the determination is made based on whether or not a signal indicating that power is being supplied from a commercial power source (hereinafter referred to as a "power supply signal") has been input from the power supply unit 93, or whether or not a clutch connection signal has been input from the opening / closing device 40.

[0146] Here, if the input of the power supply signal or the clutch connection signal is received, it is determined that the return time has arrived, and if the input of the power supply signal and the clutch connection signal is not received, it is determined that the return time has not arrived.

[0147] However, the present invention is not limited to this, and the determination may be made based solely on whether or not only the input of the power supply signal has been received.

[0148] Then, the control unit 94 waits until it is determined that the return timing has arrived (SD2, No), and if it is determined that the return timing has arrived (SD2, Yes), it switches the control mode from the third control mode to the fourth control mode and starts the fourth control mode processing (SD3).

[0149] The details of the fourth control mode process will be described later.

[0150] In addition, in the embodiment, after the processes of SD1 and SD2 are executed, the fourth control mode process (SD3) can be executed (specifically, the first operation instruction and the second operation instruction, which will be described later, can be accepted). In light of this, the setting timing in the embodiment essentially means the timing after the processes of SD1 and SD2 are executed.

[0151] In SD4, the control unit 94 determines whether or not an input of an operation signal from the operation device 60 has been accepted.

[0152] Then, if the control unit 94 determines that the input of the operation signal has been accepted (SD4, Yes), it proceeds to SD5, and if it determines that the input of the operation signal has not been accepted (SD4, No), it proceeds to SD6.

[0153] In SD5, the opening / closing movement control unit 94a opens or closes the opening / closing body 30 or stops the opening / closing movement of the opening / closing body 30 based on the operation signal input and accepted in SD4.

[0154] Specifically, when SD4 receives an input of a closing signal or an opening signal, it outputs a control signal corresponding to the closing signal, etc. to the opening / closing device 40 via the output unit 92, thereby electrically releasing the brake unit of the opening / closing device 40 and driving the drive unit of the opening / closing device 40, thereby electrically moving the opening / closing body 30 to the closing or opening position.

[0155] In this case, in the embodiment, even if the acceptance of inputs such as a closing signal is stopped, the drive unit of the opening / closing device 40 is driven by continuing to output the control signal, thereby continuing the closing or opening movement of the opening / closing body 30. In other words, the opening / closing movement of the opening / closing body 30 is controlled in a manner corresponding to the so-called "self-holding operation."

[0156] However, the present invention is not limited to this, and for example, when the acceptance of an input such as a closing signal is stopped, the closing or opening movement of the opening / closing body 30 may also be stopped. In other words, the opening / closing movement of the opening / closing body 30 may be controlled in response to a so-called "push-off operation."

[0157] In addition, if a stop signal is received while the opening / closing body 30 is moving to close or open, a control signal corresponding to the stop signal is output to the opening / closing machine 40 via the output unit 92, thereby stopping the drive unit of the opening / closing machine 40 from operating, and actuating the brake unit of the opening / closing machine 40 to stop the electrically driven closing or opening movement of the opening / closing body 30.

[0158] In SD6, the opening / closing movement control unit 94a determines whether the opening / closing device 40 (specifically, the drive unit) is in an overloaded state in order to confirm whether there is a factor in the opening 2 that is hindering the opening / closing movement of the opening / closing body 30 (for example, an obstacle such as a person or object passing through the opening 2).

[0159] While any method may be used to determine whether or not the overload state has occurred, in the present embodiment, when the closing movement of the opening-closing body 30 is being performed by SD7, SC3 determines whether or not the rotation speed of the drive unit indicated by the rotation speed signal received as input from the rotation speed detection unit 80 during processing of SD6 is less than a threshold value (specifically, the threshold value of the threshold information corresponding to the position of the closing direction end of the opening-closing body 30 in the position signal received as input from the position detection unit 70 during processing of SD6) based on the control position information, rotation speed information, and threshold value information stored in the storage unit 95. Note that in the present embodiment, when the opening-closing movement of the opening-closing body 30 is being performed by SD7, the determination of whether or not the overload state has occurred is not performed.

[0160] If the value is less than the threshold, it is determined that the overload state exists, and if the value is not less than the threshold, it is determined that the overload state does not exist.

[0161] Then, if the opening / closing movement control unit 94a determines that the overload state exists (SD6, Yes), it proceeds to SD7, and if it determines that the overload state does not exist (SD6, No), it proceeds to SD8.

[0162] In SD7, if the opening / closing movement of the opening / closing body 30 is continuing immediately before the processing of SD7, the opening / closing movement control unit 94a stops the opening / closing movement, and then the process proceeds to SD1.

[0163] Here, the method for stopping the opening / closing movement of the opening / closing body 30 is arbitrary, but in the embodiment, when the closing movement of the opening / closing body 30 is being performed by SD7, the closing movement of the opening / closing body 30 is temporarily stopped, and then the opening movement of the opening / closing body 30 is performed so that the position of the closing direction side end of the opening / closing body 30 is higher than the current position, and then this opening movement is stopped (a so-called ``touch-up operation'' is performed).

[0164] However, the present invention is not limited to this, and for example, the opening / closing movement of the opening / closing body 30 may simply be stopped (a so-called "touch stop operation" may be performed).

[0165] In SD8, the control unit 94 determines whether the position of the closing direction side end of the opening / closing body 30 has reached either the first limit position P1 or the second limit position P2.

[0166] The method for determining whether the first restricting position P1 or the second restricting position P2 has been reached is arbitrary, but in the embodiment, the determination is made based on whether the position of the closing direction side end of the opening / closing body 30 indicated by the position signal received as input from the position detection unit 70 during processing of SD8 matches the first restricting position P1 or the second restricting position P2 set in SB1 or SB2 (or the first restricting position P1 or the second restricting position P2 set in SE19 described below).

[0167] Here, if it matches the first restriction position P1 or the second restriction position P2, it is determined that either the first restriction position P1 or the second restriction position P2 has been reached, and if it does not match either the first restriction position P1 or the second restriction position P2, it is determined that neither the first restriction position P1 nor the second restriction position P2 has been reached.

[0168] Then, if the control unit 94 determines that either the first restriction position P1 or the second restriction position P2 has been reached (SD8, Yes), it proceeds to SD7, and the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30.

[0169] On the other hand, if it is determined that neither the first limit position P1 nor the second limit position P2 has been reached (SD8, No), the process proceeds to SD1, and the processes from SD1 to SD8 are repeated in the same manner.

[0170] By performing such third control mode processing, the opening / closing body 30 can be opened or closed, and the open / closed state of the opening / closing body 30 can be changed depending on the situation.

[0171] (Opening and closing process - Opening and closing process details - 4th control mode process) Next, the fourth control mode process of SD3 in FIG. 7 will be described.

[0172] The fourth control mode processing is processing for setting (resetting) the first restriction position P1 and the second restriction position P2 that were previously set in the control system 50 (specifically, the first restriction position P1 and the second restriction position P2 that were previously set in the first control mode processing of SA1) after the setting timing has arrived.

[0173] Here, the first restriction position P1 and the second restriction position P2 are set after the setting timing has arrived for the following two reasons.

[0174] First, the first reason is as follows. That is, when the power supply of the opening / closing device 1 is turned off, the connection between the opening / closing device 40 and the winding shaft by the clutch of the opening / closing device 40 may be released in order to manually operate the opening / closing device 40. In this case, when the opening / closing device 40 is manually operated, the position of the closing direction end of the opening / closing body 30 may be shifted, and the position detection unit 70 may not be able to accurately detect the position of the closing direction end of the opening / closing body 30. For this reason, there is a risk that the opening / closing movement of the opening / closing body 30 may not be accurately stopped at the first limit position P1 and the second limit position P2 set in the first control mode processing of SA1, and this is to avoid the occurrence of such a problem.

[0175] Although the opening / closing device 40 is not necessarily manually operated after the opening / closing device 1 is powered off, the control device 90 cannot receive a clutch release signal when the opening / closing device 1 is powered off, and therefore the control device 90 cannot recognize the connection state between the opening / closing device 40 and the winding shaft. Therefore, in the embodiment, the fourth control mode process is executed even when the opening / closing device 1 is simply powered off and then restored (specifically, when the power is turned on).

[0176] The second reason is as follows: That is, when the power supply of the opening / closing device 1 is on and the connection between the opening / closing device 40 and the winding shaft by the clutch of the opening / closing device 40 is released in order to manually operate the opening / closing device 40, as described above, the position of the closing direction side end of the opening / closing body 30 is shifted due to the manual operation of the opening / closing device 40, and the position detection unit 70 cannot accurately detect the position of the closing direction side end of the opening / closing body 30 (in this case, the control device 90 receives a clutch release signal). Therefore, there is a risk that the opening / closing movement of the opening / closing body 30 cannot be accurately stopped at the first limit position P1 and the second limit position P2 set in the first control mode processing of SA1, and this is to avoid the occurrence of such a problem.

[0177] When the fourth control mode process is started, as shown in FIG. 8, the opening / closing movement control section 94a sets a first overload determination value in SE1.

[0178] Here, the "first overload determination value" is a value for determining whether the switch 40 is in an overload state in the first opening / closing control.

[0179] The first overload judgment value may be set by any method, but in this embodiment, it is set in SC3 based on the learned value of the learned value information stored in the storage unit 95, and more specifically, it is set based on the maximum load value of the learned value.

[0180] More specifically, as shown in FIG. 6, the first overload judgment value is set to be either the maximum load value of the learned value itself (in FIG. 6, the value at which the rotation speed of the drive unit of the opening / closing device 40 is lowest) or a value obtained by multiplying the maximum load value of the learned value by a coefficient, which is a constant value regardless of the position of the opening / closing body 30 and indicates a rotation speed that is higher than the rotation speed of the drive unit of the opening / closing device 40 indicated by the second overload judgment value described below (in other words, it is set so that the load amount of the opening / closing device 40 indicated by the first overload judgment value is smaller than the load amount of the opening / closing device 40 indicated by the second overload judgment value described below).

[0181] Such a setting makes it possible to execute the first opening and closing control that easily ensures the usability of the opening and closing device 1, and improves the controllability of the first opening and closing control.

[0182] Furthermore, compared to when the load amount of the opening / closing device 40 indicated by the first overload judgment value is greater than the load amount of the opening / closing device 40 indicated by the second overload judgment value, the judgment accuracy of the first opening / closing control can be set stricter than the judgment accuracy of the second opening / closing control, making it easier to avoid failure or damage to the opening / closing body 30 and / or the opening / closing device 40.

[0183] However, the present invention is not limited to this, and the first overload determination value may be set based on a value other than the maximum load value of the learned values (for example, the minimum load value or an intermediate load value of the learned values). Alternatively, the first overload determination value may be set to a value equal to or greater than a second overload determination value (described later) or a variable value that varies depending on the position of the opening / closing body 30.

[0184] Returning to FIG. 8, in SE2, the opening / closing movement control section 94a determines whether the first operation instruction has been received via the operation device 60.

[0185] Here, the "first operation instruction" refers to an operation instruction received via the operating device 60 that instructs to perform the first opening / closing control, and in the embodiment, this corresponds to the instruction indicated by the closing signal (i.e., an instruction to move the opening / closing body 30 in the closing direction away from the reference position PP previously set in SC1 by moving the opening / closing body 30 in the closing direction).

[0186] Furthermore, the method for determining whether or not the first operation instruction has been accepted may be arbitrary, but in the embodiment, the determination is made based on whether or not input of a close signal from the operation device 60 has been accepted.

[0187] Here, if the input of the close signal is accepted, it is determined that the first operation instruction is accepted, and if the input of the close signal is not accepted, it is determined that the first operation instruction is not accepted.

[0188] Then, if the opening / closing movement control unit 94a determines that the first operation instruction has been accepted (SE2, Yes), it proceeds to SE3, and if it determines that the first operation instruction has not been accepted (SE2, No), it proceeds to SE15.

[0189] In SE3, the opening / closing movement control section 94a executes the first opening / closing control.

[0190] Specifically, the opening / closing movement control unit 94a moves the opening / closing body 30 in the closing direction so that the closing direction side end of the opening / closing body 30 moves away from the reference position PP based on the first operation instruction (more specifically, the instruction indicated by the closing signal) received by SE2.

[0191] Further, regarding the details of the control content of this first opening / closing control, in the embodiment, it is assumed that the opening / closing movement of the opening / closing body 30 corresponding to the self-holding operation is controlled.

[0192] In SE4, the opening / closing movement control unit 94a determines whether the opening / closing machine 40 (specifically, the drive unit) is in an overload state in order to avoid malfunctions of the opening / closing body 30 and / or the opening / closing machine 40 during the first opening / closing control.

[0193] The method for determining whether or not the above-mentioned overload state exists is arbitrary, but in this embodiment, the determination is made based on whether or not the rotation speed of the drive unit indicated by the rotation speed signal received as input from the rotation speed detection unit 80 during processing of SE4 is less than the first overload determination value set in SE1.

[0194] If the value is less than the threshold, it is determined that the overload state exists, and if the value is not less than the threshold, it is determined that the overload state does not exist.

[0195] Then, if the opening / closing movement control unit 94a determines that the overload state exists (SE4, Yes), it proceeds to SE5, and if it determines that the overload state does not exist (SE4, No), it proceeds to SE10.

[0196] In SE5, the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30, which has been continued until just before the processing in SE5.

[0197] The method for stopping the opening and closing movement of the opening and closing body 30 is arbitrary, but in the embodiment, the opening and closing movement of the opening and closing body 30 is stopped by performing the touch-up operation described above (note that the processing of SE11 is substantially the same).

[0198] In SE6, the opening / closing movement control section 94a determines whether or not to limit the first opening / closing control.

[0199] Here, in the embodiment, "limiting the first opening / closing control" means that the opening / closing movement control section 94a does not perform the first opening / closing control even if the first operation instruction is accepted.

[0200] Furthermore, the method for determining whether or not to restrict the first opening / closing control is arbitrary, but in the embodiment, the determination is made based on whether or not the number of times (e.g., two or more times) that SE4 has determined that the opening / closing device 40 is in an overload state when the closing direction side end of the opening / closing body 30 is in the same position is greater than or equal to a threshold value.

[0201] However, the present invention is not limited to this, and the determination may be made based on whether the number of determinations (for example, once or twice or more) is equal to or greater than a threshold value, regardless of the position of the closing direction end of the opening / closing body 30, for example.

[0202] If the difference is less than the threshold value, it is determined that the first opening / closing control is to be limited, and if the difference is not less than the threshold value, it is determined that the first opening / closing control is not to be limited.

[0203] Then, if the opening / closing movement control unit 94a determines that the first opening / closing control is to be restricted (SE6, Yes), it proceeds to SE7, and if it determines that the first opening / closing control is not to be restricted (SE6, No), it proceeds to SE2.

[0204] In SE7, the opening / closing movement control section 94a limits the first opening / closing control.

[0205] Specifically, the opening / closing movement control unit 94a will not execute the first opening / closing control even if the first operation instruction is accepted between the completion of processing in SE7 and the lifting of the restriction on the first opening / closing control in SE9 described below.

[0206] By processing SE4 to SE7 in this manner, when the first opening / closing control is performed after the set timing arrives, failure or damage to the opening / closing body 30 and / or opening / closing machine 40 can be avoided, thereby improving the usability of the opening / closing device 1.

[0207] Furthermore, if the number of judgments in SE6 is equal to or greater than a threshold value, the first opening / closing control is restricted in SE7, thereby preventing the first opening / closing control from being performed unnecessarily and further avoiding breakdowns or damage to the opening / closing body 30 and / or opening / closing machine 40.

[0208] In SE8, the opening / closing movement control section 94a determines whether or not a second operation instruction has been accepted via the operating device 60 in order to release the restriction on the first opening / closing control in SE7.

[0209] Here, the "second operation instruction" refers to an operation instruction received via the operating device 60 that instructs to perform a second opening / closing control, and in the embodiment, this corresponds to the instruction indicated by the opening signal (i.e., an instruction to move the opening / closing body 30 in the opening direction, thereby bringing the closing direction side end of the opening / closing body 30 closer to the reference position PP).

[0210] Furthermore, the method for determining whether or not the second operation instruction has been accepted may be arbitrary, but in the embodiment, the determination is made based on whether or not input of a release signal from the operation device 60 has been accepted.

[0211] Here, if the input of the open signal is accepted, it is determined that the second operation instruction is accepted, and if the input of the open signal is not accepted, it is determined that the second operation instruction is not accepted.

[0212] Then, the opening / closing movement control unit 94a waits until it is determined that the second operation instruction has been accepted (SE8, No), and if it is determined that the second operation instruction has been accepted (SE8, Yes), it proceeds to SE9.

[0213] In SE9, the opening / closing movement control section 94a releases the restriction on the first opening / closing control in SE7, and then the process proceeds to SE16.

[0214] Specifically, the opening / closing movement control unit 94a executes the first opening / closing control when the first operation instruction is accepted after the processing of SE9.

[0215] In SE10, the opening / closing movement control unit 94a determines whether the distance by which the opening / closing body 30 is moved to open or close during the first opening / closing control of SE3 has reached the distance determination value in order to avoid failure of the opening / closing body 30 and / or the opening / closing mechanism 40 during the first opening / closing control.

[0216] Here, the "distance determination value" means a value for limiting the distance by which the opening / closing body 30 is moved to open or close, and is, for example, the value of the distance from the first limit position P1 to the second limit position P2, or a value shorter than that distance.

[0217] Furthermore, the method for acquiring the distance determination value is arbitrary, but in this embodiment, the distance determination value is acquired before the set timing arrives.

[0218] For example, the difference between the first limit position P1 and the second limit position P2 set in the first control mode process may be calculated immediately after the first control mode process of SA1 is completed (or immediately before the third control mode process of SA3 is started), or may be obtained by storing the difference in the memory unit 95 when the opening and closing device 1 is manufactured (or installed).

[0219] Then, if the opening / closing movement control unit 94a determines that the distance of the distance judgment value has been reached (SE10, Yes), it proceeds to SE11, and if it determines that the distance of the distance judgment value has not been reached (SE10, No), it proceeds to SE12.

[0220] In SE11, the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30, which has been continued until immediately before the processing of SE11. Thereafter, by proceeding to SE7, the first opening / closing control is limited regardless of the determination result of SE4.

[0221] By performing the processes in SE10, SE11, and SE7, it is possible to further prevent the first opening / closing control from being performed unnecessarily, and to further prevent failure or damage to the opening / closing body 30 and / or the opening / closing device 40.

[0222] In SE12, the opening / closing movement control unit 94a determines whether or not a second operation instruction has been accepted via the operating device 60, in a manner similar to the processing of SE8, so that during the fourth control mode processing, the opening / closing movement control unit 94a can perform opening / closing movement of the opening / closing body 30 based on an operation signal input from the operating device 60, in a manner similar to the processing of the third control mode.

[0223] If the opening / closing movement control unit 94a determines that the second operation instruction has been accepted (SE12, Yes), it proceeds to SE16 described below, and if it determines that the second operation instruction has not been accepted (SE12, No), it proceeds to SE13.

[0224] In SE13, the opening / closing movement control unit 94a determines whether or not a third operation instruction has been accepted via the operating device 60 so that the opening / closing body 30 can be opened / closed based on an operation signal input from the operating device 60 during the fourth control mode processing, in a manner similar to the third control mode processing.

[0225] Here, the "third operation instruction" refers to an operation instruction received via the operation device 60 that instructs stopping the first opening / closing control or the second opening / closing control, and in the embodiment, this corresponds to the instruction indicated by the stop signal.

[0226] Furthermore, the method for determining whether or not the third operation instruction has been accepted may be arbitrary, but in the embodiment, the determination is made based on whether or not input of a stop signal from the operation device 60 has been accepted.

[0227] Here, if the input of the stop signal is accepted, it is determined that the third operation instruction is accepted, and if the input of the stop signal is not accepted, it is determined that the third operation instruction is not accepted.

[0228] Then, if the opening / closing movement control unit 94a determines that the third operation instruction has been accepted (SE13, Yes), it proceeds to SE14, and if it determines that the third operation instruction has not been accepted (SE13, No), it proceeds to SE4.

[0229] In SE14, the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30, which has been continued until just before the processing in SE14, and then the process proceeds to SE2.

[0230] Next, as shown in FIG. 9, in SE15, the opening / closing movement control unit 94a determines whether or not a second operation instruction has been accepted via the operating device 60, in substantially the same manner as in the processing in SE8.

[0231] Then, if the opening / closing movement control unit 94a determines that the second operation instruction has been accepted (SE15, Yes), it proceeds to SE16, and if it determines that the second operation instruction has not been accepted (SE15, No), it proceeds to SE2.

[0232] In SE16, the opening / closing movement control section 94a executes the second opening / closing control.

[0233] Specifically, if the opening / closing movement (closing movement) of the opening / closing body 30 is not performed by the first opening / closing control immediately before processing SE16, the opening / closing movement control unit 94a moves the opening / closing body 30 in an opening direction so that the closing direction side end of the opening / closing body 30 approaches the reference position PP.

[0234] Furthermore, if the opening / closing body 30 is being moved open / closed by the first opening / closing control immediately before processing SE16, the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30 and then moves the opening / closing body 30 open so that the closing direction side end of the opening / closing body 30 approaches the reference position PP.

[0235] Further, in the embodiment, the second opening / closing control is performed to control the opening / closing movement of the opening / closing body 30 in accordance with the self-holding operation.

[0236] In SE17, the opening / closing movement control section 94a determines whether or not the opening / closing device 40 (specifically, the drive section) is in an overload state in order to set (reset) the limit position.

[0237] The method for determining whether or not the above-mentioned overload state exists is arbitrary, but in the embodiment, the determination is made based on whether or not the rotation speed of the drive unit indicated by the rotation speed signal received as input from the rotation speed detection unit 80 during processing of SE17 is less than the second overload determination value.

[0238] Here, the "second overload determination value" is a value for determining whether the switch 40 is in an overload state in the second opening / closing control.

[0239] The method for setting this second overload judgment value is arbitrary, but in the embodiment, it is set to a value indicating the load amount of the opening / closing device 40 that is different from the first overload judgment value and is the value of the judgment value information that is pre-stored in the memory unit 95 when the control device 90 is manufactured or installed (i.e., a value pre-set in the control system 50).

[0240] As an example, a value indicating a rotation speed that is lower than the rotation speed of the drive unit of the switchgear 40 indicated by the first overload determination value is set as the second overload determination value (that is, the second overload determination value is set so that the load amount of the switchgear 40 indicated by the second overload determination value is greater than the load amount of the switchgear 40 indicated by the first overload determination value).

[0241] With such settings, it is possible to determine whether the switchgear 40 is in an overload state based on the second overload determination value, and to perform the second opening / closing control based on the determination result. Therefore, the accuracy of determining whether the switchgear 40 is in an overload state can be made different between the first opening / closing control and the second opening / closing control, and the first opening / closing control and the second opening / closing control can be performed according to the situation.

[0242] However, this is not limited to this, and for example, the load amount of the switchgear 40 indicated by the second overload judgment value may be set to be the same as the load amount of the switchgear 40 indicated by the first overload judgment value, or may be set to be smaller than the load amount of the switchgear 40 indicated by the first overload judgment value.

[0243] If the opening / closing movement control unit 94a determines that the overload state exists (SE17, Yes), it determines that the position of the closing direction side end of the opening / closing body 30 has reached the reference position PP, and proceeds to SE18.

[0244] On the other hand, if the opening / closing movement control unit 94a determines that the above-mentioned overload state does not exist (SE17, No), it determines that the position of the closing direction side end of the opening / closing body 30 has not reached the reference position PP and proceeds to SE20.

[0245] In the embodiment, if it is determined in SE17 that the above-mentioned overload state exists (i.e., if the position of the closing direction side end of the opening / closing body 30 reaches the reference position PP), the return setting unit 94b will retain the setting of the reference position PP processed in SC1.

[0246] Specifically, the return setting unit 94b sets (resets) the position indicated by the reference position information stored in the storage unit 95 during the processing of SC1 as the reference position PP.

[0247] However, the present invention is not limited to this. For example, if it is determined in SE17 that the above-described overload state exists, the restoration setting unit 94b does not have to retain the setting of the reference position PP processed in SC1.

[0248] As an example, the return setting unit 94b may set (reset) the position of the closing direction side end of the opening / closing body 30 indicated by the position signal received as input from the position detection unit 70 during the processing of SE17 as the reference position PP.

[0249] In SE18, the opening / closing movement control unit 94a stops the opening / closing movement of the opening / closing body 30, which has been continued up until just before the processing of SE18.

[0250] The method for stopping this opening / closing movement is arbitrary, but for example, the opening / closing movement control unit 94a may stop the opening / closing movement of the opening / closing body 30 at the position of the closing direction end of the opening / closing body 30 immediately before the processing of SE18.

[0251] Alternatively, the opening / closing movement control unit 94a first temporarily stops the opening / closing movement of the opening / closing body 30 at the position of the closing direction end of the opening / closing body 30 immediately before the processing of SE18. Next, the opening / closing body 30 is automatically opened / closed toward the first limit position P1. Thereafter, when the closing direction end of the opening / closing body 30 reaches the first limit position P1, the opening / closing movement of the opening / closing body 30 may be automatically stopped.

[0252] In SE19, the return setting unit 94b sets (resets) the first limiting position P1 and the second limiting position P2 based on the first distance and the second distance calculated in SC2.

[0253] Here, the method for setting the first restriction position P1 is arbitrary, but based on the first distance information stored in the memory unit 95, a position that is a first distance away from the reference position PP set during processing of SE17 is calculated, and the calculated position is set as the first restriction position P1.

[0254] Furthermore, the method for setting the second restriction position P2 is arbitrary, but based on the second distance information stored in the memory unit 95, if the second distance is the distance from the second restriction position P2 set in SB2 to the reference position PP set in SC1, a position that is the second distance away from the reference position PP set during processing of SE17 is calculated, and the calculated position is set as the second restriction position P2.

[0255] However, this is not limited to this. For example, if the second distance is the distance from the first restriction position P1 set in SB1 to the second restriction position P2 set in SB2, a position that is the second distance away from the first restriction position P1 set in SE19 may be calculated, and the calculated position may be set as the second restriction position P2.

[0256] Thereafter, the control unit 94 ends the fourth control mode process, switches the control mode from the fourth control mode to the third control mode, and then returns to the third control mode process of Fig. 7 and proceeds to SD1. Thereafter, the control unit 94 similarly repeats the processes from SD1 to SD8.

[0257] Returning to Figure 9, in SE20, during the fourth control mode processing, the opening / closing movement control unit 94a determines whether or not the first operation instruction has been accepted via the operating device 60 so that the opening / closing body 30 can be opened / closed based on the operation signal input from the operating device 60, in a manner similar to the third control mode processing.

[0258] Then, if the opening / closing movement control unit 94a determines that the first operation instruction has been accepted (SE20, Yes), it proceeds to SE3, and if it determines that the first operation instruction has not been accepted (SE20, No), it proceeds to SE21.

[0259] In SE21, the opening / closing movement control unit 94a determines whether or not a third operation instruction has been accepted via the operating device 60 so that the opening / closing body 30 can be moved to open or close based on an operation signal input from the operating device 60 during the fourth control mode processing, in a manner similar to the third control mode processing.

[0260] Then, if the opening / closing movement control unit 94a determines that the third operation instruction has been accepted (SE21, Yes), it proceeds to SE14, and if it determines that the third operation instruction has not been accepted (SE21, No), it proceeds to SE17.

[0261] Compared to the conventional technology (technology that restricts the closing movement of the shutter curtain when a closing operation instruction is received after the power supply to the shutter device is restored after a power outage), this fourth control mode processing allows the opening / closing movement of the opening / closing body 30 to be reliably performed when the first operation instruction is received after the set timing has arrived, and also allows the restriction position to be set again by the first opening / closing control and / or the second opening / closing control. This prevents the user from mistaking the opening / closing device 1 for a malfunction, and improves the usability of the opening / closing device 1. Furthermore, when the first opening / closing control is performed after the set timing has arrived, it is possible to avoid malfunctions or damage to the opening / closing body 30 and / or the opening / closing device 40, further improving the usability of the opening / closing device.

[0262] In the embodiment, in order to notify the user that the restriction position is being re-set while the fourth control mode processing is being performed, the control unit 94 continuously or intermittently outputs notification information indicating this via an output means (e.g., a known audio output means and / or display means) provided on or in the vicinity of the opening / closing device 1.

[0263] However, the present invention is not limited to this, and for example, the output of the notification information may be omitted.

[0264] By performing the opening / closing process as described above, when the time to set the first and second limit positions P1 and P2 can be reset naturally by operating the opening / closing movement of the opening / closing body 30 via the operating device 60 without the user's awareness, while avoiding the user from mistaking the opening / closing device 1 for a malfunction. Therefore, the setting work of the first and second limit positions P1 and P2 can be performed easily and smoothly while maintaining the usability of the opening / closing device 1.

[0265] (Effects of the embodiment) As described above, according to the embodiment, the opening / closing movement control unit 94a controls the opening / closing movement of the opening / closing body 30 via a drive means that moves the opening / closing body 30 to open or close based on an operation instruction received via the operating device 60, and is equipped with the opening / closing movement control unit 94a that is capable of performing first opening / closing control and second opening / closing control, and the return setting unit 94b that sets the limit position when a set timing arrives, triggered by the end of the opening / closing body 30 on the closing direction side reaching the reference position PP by the first opening / closing control and / or the second opening / closing control. When the set timing arrives, the opening / closing movement control unit 94a controls the opening / closing movement of the opening / closing body 30 via a drive means that moves the opening / closing body 30 to open or close, based on an operation instruction received via the operating device 60, and is equipped with the return setting unit 94b. When a first operation instruction is received via the operation device 60, a first overload determination value is set, and based on the set first overload determination value, a determination is made as to whether the opening / closing device 40 is in an overload state. Based on the determination result, the first opening / closing control is performed. Therefore, compared to the conventional technology (a technology that limits the closing movement of the shutter curtain when a closing operation instruction is received after a power outage and subsequent recovery from a power outage of the shutter device), when the first operation instruction is received after the set timing arrives, the opening / closing movement of the opening / closing body 30 can be reliably performed, and the limit position can be re-set by the first opening / closing control and / or the second opening / closing control. This prevents the user from mistaking the opening / closing device 1 for a malfunction, thereby improving the usability of the opening / closing device 1. Furthermore, when the first opening / closing control is performed after the set timing arrives, malfunctions or damage to the opening / closing body 30 and / or the opening / closing device 40 can be avoided, thereby further improving the usability of the opening / closing device 1.

[0266] Furthermore, since the first overload determination value is based on the maximum load value of the learned value, the first switching control can be executed in a way that makes it easy to ensure the usability of the switching device 1, and the controllability of the first switching control can be improved.

[0267] Furthermore, when the set timing arrives, the opening / closing movement control unit 94a determines whether the opening / closing device 40 is in an overload state based on the set first overload determination value. If the number of times that the opening / closing device 40 is determined to be in an overload state when the position of the closing direction end of the opening / closing body 30 is the same is greater than or equal to a threshold value, or if the number of times that the opening / closing device 40 is determined to be in an overload state is greater than or equal to a threshold value regardless of the position of the closing direction end of the opening / closing body 30, the opening / closing movement control unit 94a limits the first opening / closing control. This prevents the first opening / closing control from being performed unnecessarily, and further prevents breakdowns or damage to the opening / closing body 30 and / or the opening / closing device 40.

[0268] Furthermore, when the set timing arrives and the first operation instruction is received via the operating device 60, the opening / closing movement control unit 94a determines whether the distance by which the opening / closing body 30 has been moved to open or close during the first opening / closing control has reached the distance determination value, and if it is determined that the distance determination value has been reached, it limits the first opening / closing control regardless of the determination result of whether the opening / closing machine 40 is in an overload state, thereby further preventing the first opening / closing control from being performed unnecessarily and further preventing breakdowns or damage to the opening / closing body 30 and / or the opening / closing machine 40.

[0269] Furthermore, when the set timing arrives and the second operation instruction is received via the operating device 60, the opening / closing movement control unit 94a determines whether the opening / closing device 40 is in an overload state based on the second overload determination value, and performs the second opening / closing control based on the determination result.Therefore, the accuracy of determining whether the opening / closing device 40 is in an overload state can be made different between the first opening / closing control and the second opening / closing control, and the first opening / closing control and the second opening / closing control can be performed according to the situation.

[0270] Furthermore, the reference position PP is the position of the end of the opening 2 in the opening direction or a position near it, and the load amount of the opening / closing device 40 indicated by the first overload judgment value is set smaller than the load amount of the opening / closing device 40 indicated by the second overload judgment value. Therefore, the judgment accuracy of the first opening / closing control can be set stricter than the judgment accuracy of the second opening / closing control compared to when the load amount of the opening / closing device 40 indicated by the first overload judgment value is larger than the load amount of the opening / closing device 40 indicated by the second overload judgment value, making it easier to avoid failure or damage to the opening / closing body 30 and / or the opening / closing device 40.

[0271] [III] Modifications to the embodiment Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions set forth in the claims. Such modifications will be described below.

[0272] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and the present invention may solve problems that are not described above or achieve effects that are not described above, or may solve only some of the problems that are described or achieve only some of the effects that are described.

[0273] (Regarding decentralization and integration) Furthermore, the electrical components described above are functional concepts and do not necessarily have to be physically configured as shown in the drawings. In other words, the specific form of distribution or integration of each part is not limited to that shown in the drawings, and all or part of them can be functionally or physically distributed or integrated in any unit depending on various loads, usage conditions, etc. Furthermore, the term "device" in this application is not limited to a single device, but includes a device configured from multiple devices.

[0274] For example, the control device 90 may be configured as a plurality of devices that are configured to be able to communicate with each other, with a control unit 94 provided in some of these devices and a memory unit 95 provided in another portion of these devices.

[0275] (shape, numbers, structure, time series) The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention in terms of shape, numerical value, or the structure or chronological relationship of multiple components.

[0276] (Regarding the reference position) In the above embodiment, the reference position PP is described as being above the limiting position, but this is not limiting. For example, the reference position PP may be below the limiting position, and may be at or near the bottom end of the opening 2.

[0277] In this case, in SE3 of the opening / closing process, the opening / closing movement control unit 94a may move the opening / closing body 30 to open so that the closing direction side end of the opening / closing body 30 moves away from the reference position PP based on a first operation instruction (more specifically, an instruction indicated by an open signal). Also, in SE16 of the opening / closing process, the opening / closing movement control unit 94a may move the opening / closing body 30 to close so that the closing direction side end of the opening / closing body 30 moves closer to the reference position PP based on a second operation instruction (more specifically, an instruction indicated by a close signal).

[0278] (Regarding control systems) In the above embodiment, the control system 50 is described as including the rotation speed detection unit 80, but this is not limited to this. For example, any detection means capable of detecting the load amount of the drive unit of the switchgear 40 may be used, and as one example, a detection device capable of detecting the voltage value or current value of the drive unit of the switchgear 40 may be used.

[0279] In this case, with regard to the voltage value or current value of the drive unit of the switch 40, a higher voltage value or current value indicates a higher load on the drive unit, and a lower voltage value or current value indicates a lower load on the drive unit.

[0280] (Regarding setting timing) In the above embodiment, the setting timing is essentially the timing after the processes of SD1 and SD2 have been executed, but the present invention is not limited to this.

[0281] For example, even if the power supply from the commercial power source to the switchgear 1 is stopped during execution of the third control mode process of SA3, if the fourth control mode process can be executed using the power of the power supply unit 93 of the control device 90 and / or an emergency power supply unit (not shown), the fourth control mode process (SD3) may be executed after the process of SD1, omitting the process of SD2. In other words, the set timing may simply be the timing after the process of SD1 is executed.

[0282] (About opening and closing process) In the above embodiment, the first control mode process and the second control mode process are performed before the third control mode process, but this is not limiting.

[0283] For example, if a predetermined operation is received via the operating device 60 during the third control mode processing (or the fourth control mode processing), the control unit 94 may cancel the third control mode processing (or the fourth control mode processing), switch the control mode from the third control mode (or the fourth control mode) to the first control mode (or the second control mode), and execute the first control mode processing (or the second control mode processing) again.

[0284] In the above embodiment, the reference position PP is set after the first and second restriction positions P1 and P2 are set, but this is not limiting. For example, the reference position PP may be set before the first and second restriction positions P1 and P2 are set.

[0285] Furthermore, in the above embodiment, it has been described that the processes of SE10 and SE11 are executed in the fourth control mode process, but this is not limiting, and for example, the processes of SE10 and SE11 may be omitted.

[0286] Furthermore, in the above embodiment, it was explained that in the fourth control mode processing, the first opening / closing control of SE3 and the second opening / closing control of SE16 control the opening / closing movement of the opening / closing body 30 corresponding to a self-holding operation, but this is not limited to this, and for example, the opening / closing movement of the opening / closing body 30 corresponding to a push-off operation may be controlled.

[0287] In addition, in the above embodiment, it was explained that in SE19 of the fourth control mode processing, the first restriction position P1 and the second restriction position P2 are set based on the first distance and the second distance calculated in SC2, but this is not limited to this.

[0288] For example, either the first limit position P1 or the second limit position P2 may be set based on the first distance or the second distance calculated by SC2. Alternatively, the other of the first limit position P1 or the second limit position P2 may be set by a method that is not based on the first distance or the second distance calculated by SC2 (for example, a method in which, while moving the opening / closing body 30 to open or close via the operating device 60, the position of the end of the opening / closing direction side of the opening / closing body 30 indicated by a position signal received as input from the position detection unit 70 at a predetermined timing is set as the limit position).

[0289] (Addendum) The control system of Supplementary Note 1 is a control system for controlling an opening / closing device having an opening / closing body that opens and closes an opening of a building, the control system comprising: an operating means for receiving an operation instruction related to the opening / closing device; and an opening / closing movement control means for controlling the opening / closing movement of the opening / closing body via a drive means for moving the opening / closing body to open or close, based on the operation instruction received via the operating means, the opening / closing movement control means being capable of performing a first opening / closing control that is a control for moving the opening / closing body to open or close so that an end portion of the opening / closing body on the closing direction side moves away from a reference position that is a reference position preset in the control system and serves as a reference for controlling the opening / closing movement of the opening / closing body; and a second opening / closing control that is a control for moving the opening / closing body to open or close so that the end portion of the opening / closing body on the closing direction side approaches the reference position, the opening / closing movement control means being capable of performing a first opening / closing control that is a control for moving the opening / closing body to open or close so that an end portion of the opening / closing body on the closing direction side moves closer to the reference position, the opening / closing movement control means being capable of performing a second opening / closing control that is a control for moving the opening / closing body to open or close so that an end portion of the opening / closing body on the closing direction side approaches the reference position, the opening / closing movement control means being capable of performing a limit position preset in the control system and and a return setting means for setting the limiting position again when the setting timing for resetting the limiting position for limiting movement arrives, triggered by the end of the opening / closing body on the closing direction side reaching the reference position by the first opening / closing control and / or the second opening / closing control, wherein when the setting timing arrives and a first operation instruction, which is the operation instruction to perform the first opening / closing control, is accepted via the operation means, the opening / closing movement control means sets a first overload judgment value for determining an overload state of the driving means based on a learning value that is acquired before the setting timing arrives and indicates the load during opening / closing movement of the driving means, determines whether the driving means is in an overload state based on the set first overload judgment value, and performs the first opening / closing control based on the judgment result.

[0290] The control system of Supplementary Note 2 is the control system according to Supplementary Note 1, wherein the first overload determination value is based on a maximum load value of the learned value.

[0291] The control system of Appendix 3 is the control system described in Appendix 1 or 2, wherein when the set timing arrives, the opening / closing movement control means, when determining whether or not the drive means is in an overload state based on the set first overload determination value, restricts the first opening / closing control if the number of times the drive means is determined to be in an overload state when the position of the closing direction end of the opening / closing body is the same is equal to or exceeds a threshold value, or if the number of times the drive means is determined to be in an overload state is equal to or exceeds a threshold value regardless of the position of the closing direction end of the opening / closing body.

[0292] The control system of Appendix 4 is the control system described in Appendix 1 or 2, wherein when the set timing arrives and the first operation instruction is accepted via the operation means, the opening / closing movement control means determines whether the distance by which the opening / closing body has been moved to open or close during the first opening / closing control has reached the distance of the distance judgment value obtained before the set timing arrives, and if it is determined that the distance of the distance judgment value has been reached, restricts the first opening / closing control regardless of the determination result of whether the drive means is in an overload state.

[0293] The control system of Appendix 5 is the control system described in Appendix 1 or 2, wherein when the set timing arrives and a second operation instruction, which is the operation instruction to perform the second opening / closing control, is received via the operation means, the opening / closing movement control means determines whether the driving means is in an overload state based on a second overload determination value that is set in advance in the control system and indicates a load amount of the driving means different from the first overload determination value, for determining an overload state of the driving means, and performs the second opening / closing control based on the determination result.

[0294] The control system of Appendix 6 is the control system described in Appendix 5, wherein the reference position is the position of the end of the opening in the opening direction or a position nearby, and the load amount of the driving means indicated by the first overload determination value is smaller than the load amount of the driving means indicated by the second overload determination value.

[0295] (Effect of supplementary notes) According to the control system described in Appendix 1, the control system includes an opening / closing movement control means that controls the opening / closing movement of the opening / closing body via a drive means that moves the opening / closing body open and closed based on an operation instruction received via an operation means, the opening / closing movement control means being capable of performing first opening / closing control and second opening / closing control, and a return setting means that, when the set timing arrives, is triggered by the end of the opening / closing body on the closing direction side reaching a reference position through the first opening / closing control or / and the second opening / closing control, and sets the limit position when the set timing arrives.When the set timing arrives and the first operation instruction is received via the operation means, the opening / closing movement control means sets a first overload judgment value, determines whether the drive means is in an overload state based on the set first overload judgment value, and performs the first opening / closing control based on the judgment result.Therefore, compared to the conventional technology (a technology that restricts the closing movement of the shutter curtain when a closing operation instruction is received after the power supply to the shutter device has been powered off and then restored), when the first operation instruction is received after the set timing arrives, the opening / closing movement of the opening / closing body can be reliably performed, and the limit position can be re-set by the first opening / closing control or / and the second opening / closing control. This prevents the user from mistaking the opening / closing device for a malfunction, thereby improving usability of the opening / closing device. Furthermore, when the first opening / closing control is performed after the set timing arrives, it is possible to avoid malfunction or damage to the opening / closing body and / or drive means, thereby further improving usability of the opening / closing device.

[0296] According to the control system described in Appendix 2, the first overload judgment value is based on the maximum load value of the learned value, so that first opening and closing control can be performed that makes it easier to ensure the usability of the opening and closing device, and the controllability of the first opening and closing control can be improved.

[0297] According to the control system described in Appendix 3, when the set timing arrives, the opening / closing movement control means, when determining whether the drive means is in an overload state based on the set first overload determination value, restricts the first opening / closing control if the number of times the drive means is determined to be in an overload state when the position of the closing side end of the opening / closing body is the same is equal to or exceeds a threshold value, or if the number of times the drive means is determined to be in an overload state is equal to or exceeds a threshold value regardless of the position of the closing side end of the opening / closing body, thereby preventing the first opening / closing control from being performed unnecessarily and further preventing breakdowns or damage to the opening / closing body and / or drive means.

[0298] According to the control system described in Appendix 4, when the set timing arrives and the first operation instruction is accepted via the operation means, the opening / closing movement control means determines whether the distance by which the opening / closing body has been moved to open or close during the first opening / closing control has reached the distance determination value, and if it is determined that the distance has reached the distance determination value, it limits the first opening / closing control regardless of the determination result of whether the drive means is in an overload state, thereby further avoiding the first opening / closing control being performed unnecessarily and further avoiding breakdowns or damage to the opening / closing body and / or drive means.

[0299] According to the control system described in Appendix 5, when the set timing arrives and the second operation instruction is received via the operation means, the opening / closing movement control means determines whether the drive means is in an overload state based on the second overload determination value, and performs the second opening / closing control based on the determination result.Therefore, the accuracy of determining whether the drive means is in an overload state can be made different in the first opening / closing control and the second opening / closing control, and the first opening / closing control and the second opening / closing control can be performed according to the situation.

[0300] According to the control system described in Appendix 6, the reference position is the position of the end of the opening in the opening direction or a position nearby, and the load on the drive means indicated by the first overload judgment value is set smaller than the load on the drive means indicated by the second overload judgment value. Therefore, the judgment accuracy of the first opening / closing control can be set stricter than the judgment accuracy of the second opening / closing control compared to when the load on the drive means indicated by the first overload judgment value is larger than the load on the drive means indicated by the second overload judgment value, making it easier to avoid failure or damage to the opening / closing body and / or drive means. [Explanation of symbols]

[0301] 1 Switchgear 2 Opening 3 Wiring 10 Storage area 20 Guide rail 30 Opening and closing body 31 Slats 32 Seat board 40 Opening and Closing Machine 50 Control System 60 Operating device 70 Position detection unit 80 Rotation speed detection unit 90 Control device 91 Input section 92 Output section 93 Power supply section 94 Control Unit 94a Opening / closing movement control section 94b Return setting section 95 Memory section P1 First limit position P2 Second limit position PP reference position

Claims

1. A control system for controlling an opening and closing device having an opening and closing body that opens and closes an opening in a building, an operation means for receiving an operation instruction regarding the opening and closing device; an opening / closing movement control means for controlling the opening / closing movement of the opening / closing body via a driving means for opening / closing the opening / closing body based on the operation instruction received via the operating means, a first opening / closing control that is a control for moving the opening / closing body so that an end portion of the opening / closing body on the closing direction side moves away from a reference position that is a reference position preset in the control system and serves as a reference for controlling the opening / closing movement of the opening / closing body; an opening / closing movement control means capable of performing a second opening / closing control, which is a control for opening and closing the opening / closing body so that the end of the opening / closing body on the closing direction side approaches the reference position; a return setting means for setting the limit position, which is preset in the control system, when a setting timing arrives for resetting the limit position for limiting the opening / closing movement of the opening / closing body, triggered by the end of the opening / closing body on the closing direction side reaching the reference position by the first opening / closing control and / or the second opening / closing control, The opening / closing movement control means When the set timing arrives, if a first operation instruction, which is the operation instruction instructing to perform the first opening / closing control, is accepted via the operation means, a first overload determination value for determining an overload state of the drive means based on a learned value that is acquired before the set timing and indicates a load at the time of opening and closing movement of the drive means; determining whether or not the driving means is in an overload state based on the set first overload determination value, and performing the first opening / closing control based on the determination result; Control system.

2. The first overload determination value is based on a maximum load value of the learned value. The control system of claim 1 .

3. When the set timing arrives, the opening / closing movement control means, when determining whether or not the drive means is in an overload state based on the set first overload determination value, restricts the first opening / closing control if the number of times it is determined that the drive means is in an overload state when the position of the end of the closing direction side of the opening / closing body is the same is equal to or exceeds a threshold value, or if the number of times it is determined that the drive means is in an overload state is equal to or exceeds a threshold value regardless of the position of the end of the closing direction side of the opening / closing body.

3. A control system according to claim 1 or 2.

4. The opening / closing movement control means When the setting timing arrives and the first operation instruction is accepted via the operation means, determining whether or not a distance by which the opening / closing body is moved during the first opening / closing control has reached a distance of a distance determination value acquired before the set timing arrives; When it is determined that the distance reaches the distance determination value, the first opening / closing control is limited regardless of the determination result of whether or not the driving means is in an overload state.

3. A control system according to claim 1 or 2.

5. The opening / closing movement control means When the set timing arrives, if a second operation instruction, which is the operation instruction instructing to perform the second opening / closing control, is accepted via the operation means, a second overload determination value that is set in advance in the control system and indicates a load amount of the drive means that is different from the first overload determination value, and whether or not the drive means is in an overload state is determined based on the second overload determination value for determining an overload state of the drive means, and the second opening / closing control is performed based on the determination result; 3. A control system according to claim 1 or 2.

6. the reference position is a position of an end of the opening in an opening direction or a position in the vicinity thereof, The load amount of the driving means indicated by the first overload determination value is set to be smaller than the load amount of the driving means indicated by the second overload determination value. The control system of claim 5 .

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