JP2015229859A - Window shade and window shade control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window shade and a window shade control system that can resume a window shade to a desired condition, when the window shade condition changed by automatic control and others is not the desired condition.SOLUTION: A window shade control system includes a control part 154 that controls the conditions of a window shade 150, and a storage part 156 that stores the information related to the conditions of the window shade 150 at any given time. The control part 154 controls the condition of the window shade 150 based on the condition information stored in a second storage part 156-2, when the control part receives a condition restoration signal that gives an instruction on restoration of the condition of the window shade 150. The conditions of the window shade 150 may be controlled based on the condition information stored in the storage part 156-2 when the condition restoration signal is received, regardless of the condition of the window shade 150.

Description

  The present invention relates to a blind and a blind control system, and more particularly to a blind and its control system in which various states such as the height and angle of the blind are automatically controlled.

  An electric blind that is automatically controlled by a control means provided in a blind body or an external control means is known (see Patent Document 1). An automatic control of a conventional electric blind will be outlined with reference to FIG. In FIG. 8, reference numeral 10 is the content of the control by the control means, and reference numeral 20 is the storage content of the storage means provided in the electric blind. When the blind state is changed from state A to state E by the control means at a predetermined cycle, the changed state A to state E are stored in the storage means by overwriting.

  In such automatic control, the state may be changed to a state different from the automatic control during the automatic control. When the state of the blind is changed, for example, the blind is separated from the object of automatic control, and it is changed by a controller that can change the state of the blind to a desired state, or in the event of an emergency such as a fire, external equipment The state is controlled in conjunction with the device, and may be changed by performing interrupt control different from automatic control.

JP-A-3-169997

  By the way, when the state of the blind is changed by automatic control, the desired state may not be obtained. In addition, the state of the blind when returning to the automatic control after being changed to a state different from the automatic control during the automatic control may not be a desired state. In such a case, there is a problem that even if it is desired to return to the blind state at a certain time point, the blind state is overwritten and stored, so that it is not possible to return to the desired blind state at a past time point. In particular, automatic control includes solar control as control based on outdoor illuminance. In general solar control, only the slat angle is controlled by determining the position of the sun and the presence of direct light. If the height of the blind is changed, even if the automatic control is restored or the angle of the blind can be returned to the desired angle by automatic control, the height of the blind will be adjusted to the desired height by automatic control. I couldn't get it back.

  Therefore, the present invention has been made in view of such problems, and the object of the present invention is to return to a desired blind state when the blind state changed by automatic control or the like is not a desired state. It is an object of the present invention to provide a blind and a blind control system.

  In order to solve the above-described problem, according to a first aspect of the present invention, a state control unit that controls a blind state and a state information storage unit that stores state information relating to a blind state at an arbitrary time point are provided. When the state control means receives the state restoration signal instructing restoration of the blind state, the state control means sets the blind state to the state at the arbitrary time point based on the state information stored in the state information storage means. A blind is provided that is characterized by control.

  According to such a configuration, the blind state can be controlled based on the state information stored in the state information storage unit by receiving the state restoration signal regardless of the state of the blind.

  In the blind according to the present invention, the state information storage means can store a plurality of the state information, and the state restoration signal includes one of the plurality of state information stored in the state information storage means. Information for selection may be included. By making it possible to store a plurality of state information, a desired state can be selected and restored from among a plurality of states.

  Further, when the state information storage means receives a signal instructing to store the state information relating to the blind state at the arbitrary time point, the state information storage means may store the state information relating to the blind state at the time of reception. Good. By making it possible to store the state of the blind at an arbitrary time, it is possible to restore the stored state to a desired state at any subsequent time.

  In order to solve the above problems, according to a second aspect of the present invention, a plurality of blinds, a central control device connected to the plurality of blinds to control the state of the blinds, and one or more blinds are provided. And a blind control system in which a state control signal for controlling a state of the blind is transmitted from the central control unit or the controller to each blind. In the blind control system of the present invention, each of the blinds includes state control means for controlling the state of the blind, and state information storage means for storing state information regarding the state of the blind at an arbitrary time point, and the state control means After storing the state information related to the state of the blind, when receiving a state recovery signal instructing the recovery of the blind state from the central controller or the controller, the state information is stored on the basis of the state information stored in the state information storage means. The blind state is controlled.

  According to such a configuration, by storing the state information regarding the state of the blind at an arbitrary time, even if there is a change in the state of the blind by automatic control by the central control device, the blind is based on the state information at the stored time. Can be controlled.

  In the blind control system of the present invention, the state information storage means can store a plurality of the state information, and the state restoration signal includes one of the plurality of state information stored in the state information storage means. Information for selecting one may be included. By making it possible to store a plurality of state information, a desired state can be selected and restored from among a plurality of states.

  In addition, an external control device that controls blinds in conjunction with the central control device is further provided, and when the notification signal is transmitted from the external control device to the central control device, the notification signal is transmitted. The state information is stored in the state information storage means, and when the linkage between the central control device and the external control device is released, the central control device may transmit the state restoration signal. . According to such a configuration, the state information of the blind at the time when the notification signal is transmitted from the external control device can be stored, so that the state restoration signal is stored when the linkage with the external control device is released. The blind state can be controlled based on the state information.

  Further, the central control device transmits a control signal to each blind at a predetermined cycle, and each blind is given priority to a remote mode in which control from the central control device is given priority and control from the controller. In the remote mode, when the notification signal is transmitted from the external control device in the remote mode, the blind signal at the time of receiving the notification signal or the control signal transmitted in the predetermined cycle is used. At least one of the states of the based blind is stored in the state information storage means, and after receiving the notification signal, when the linkage between the central control device and the external control device is released, each blind is You may make it be in the state memorize | stored last in the said status information storage means. According to such a configuration, in the remote mode, at least one of the blind state at the time of receiving the notification signal or the blind state based on the control signal transmitted at a predetermined cycle can be stored in the storage unit. When the linkage with the external control device is released, the state of the blind can be controlled based on the stored state information. Therefore, the open / close state reflecting the automatic control can be achieved.

  Further, the central control device transmits a control signal to each blind at a predetermined cycle, and each blind is given priority to a remote mode in which control from the central control device is given priority and control from the controller. In the local mode, when the notification signal is transmitted from the external control device, the control signal transmitted in the blind state at the time of reception of the notification signal or the predetermined signal is transmitted. At least one of the states of the based blind is stored in the state information storage means, and after receiving the notification signal, when the linkage between the central control device and the external control device is released, each blind is You may make it be in the state in the time of the said notification signal reception. According to such a configuration, in the local mode, at least one of the blind state at the time of receiving the notification signal or the blind state based on the control signal transmitted at a predetermined period can be stored in the storage unit. When the linkage with the external control device is released, the blind state can be controlled based on the last stored state information even if the brine state changes. Therefore, it can be set as the blind state reflecting the hand operation.

  According to the present invention, when the blind state changed by automatic control or the like is not a desired state, it is possible to return to the desired blind state. The other effects of the present invention will be described in the section of the embodiment for carrying out the invention below.

It is a figure which shows the structure of the blind control system concerning 1st Embodiment. It is a block diagram which shows the structure of a blind. It is a figure which shows control of a blind. It is a figure which shows the structure of the blind control system concerning 2nd Embodiment. It is a block diagram which shows the structure of a blind. It is a figure which shows control of a blind. It is a figure which shows the application example of the blind control system concerning 2nd Embodiment. It is a figure which shows the control of the conventional blind.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a case where a plurality of blinds arranged across a plurality of floors in a building are controlled by a central control device will be described as an example.

  As shown in FIG. 1, the blind control system 100 of the present embodiment includes a sunshine detection device 110 installed on the rooftop of a building, a floor relay device 120 installed in the building, a blind communication line 130, a central control. The apparatus 140 and the blind 150 are comprised. In FIG. 1, only the configuration necessary for the description of the present embodiment is shown. Hereinafter, it demonstrates in order.

  The sunshine detection device 110 measures illuminance, and for example, a sunshine detection device described in Japanese Patent Application Laid-Open No. 2007-101501 is installed.

  The floor relay device 120 is provided on each floor, converts the signal from the central control device 140 and transmits it to the blind 150 of the corresponding floor, or temporarily stores the state of the blind 150 of the corresponding floor. Or The floor relay device 120 is connected to the sunshine detection device 110 and temporarily stores the illuminance value of the sunshine detection device 110.

  The blind communication line 130 connects the sunshine detection device 110, the floor relay device 120, the central control device 140, and the blind 150, and is a communication line for transmitting a signal related to the control of the blind 150.

(Central control device 140)
The central controller 140 manages the control and status of the blind 150. The central controller 140 has at least functional units similar to those of a general electronic computer, such as a calculation means (CPU), a storage means (for example, ROM, RAM, etc.), and transfers data, calculates, and temporarily according to a predetermined program. Data storage or main program storage. Further, the central control device 140 inputs / outputs data to / from the blind 150 via the floor relay device 120 and stores data and programs. More specifically, the central control device 140 determines whether it is sunny or cloudy based on the illuminance value measured by the sunshine detection device 110, or calculates the rotation angle of the slats 158 described later. Data for automatic control is transmitted to the blind 150, schedule management, blind control of the entire building, acquisition of blind status, and the like are also performed.

  In addition to the control signal for controlling the state of the blind 150, the central control device 140 is a signal for instructing to store the current state of the blind 150 as a control signal unique to the present embodiment (hereinafter, a state holding signal). And a signal for instructing the restoration of the state of the blind 150 (hereinafter referred to as a state restoration signal) to the control unit 154 of the blind 150, respectively. This point will be further described later.

(Blind 150)
The blinds 150 are horizontal blinds that are electrically opened and closed, for example, and a plurality of blinds are provided on each floor as shown in FIG.

Details of the blind 150 will be described with reference to FIG.
As shown in FIG. 2, the blind 150 receives a signal from the controller 152 or an instruction from the central controller 140 when the user arbitrarily sends a command regarding the state of the blind 150, and the state of the blind 150 A control unit 154 for controlling the state, a storage unit 156 (first and second storage units 156-1 and 156-2) for storing state information regarding the state of the blind 150, and a slat whose open / close state is controlled by the control unit 154. 158. In FIG. 2, only the configuration necessary for the description of the present embodiment is shown. Hereinafter, it demonstrates in order.

  The controller 152 is for operating the blind 150 at hand, and is provided for each of one or more blinds 150 (see also FIG. 1). The controller 152 transmits a signal similar to the signal transmitted by the central controller 140 described above to the control unit 154 at the subsequent stage. That is, in addition to the control signal for controlling the state of the blind 150, the controller 152, as a control signal unique to the present embodiment, a state holding signal for instructing to store the current state of the blind 150, and the state of the blind 150 A state restoration signal instructing restoration is transmitted to the control unit 154 of the blind 150. This point will be further described later.

  The control unit 154 receives a signal from the central control device 140 or the controller 152, and controls the state of the blind 150 based on the signal. The control unit 154 is subjected to periodic automatic control by the central control device 140 and manual control by the controller 152. The period of automatic control by the central controller 140 can be arbitrarily set, for example, 60 minutes.

  Further, when receiving the state holding signal from the central control device 140 or the controller 152, the control unit 154 stores the current state of the blind 150 in the second storage unit 156-2, which will be described later. Furthermore, when receiving the state restoration signal from the central controller 140 or the controller 152, the control unit 154 controls the state of the blind 150 based on the state information stored in the second storage unit 156-2. Here, the state of the blind 150 is a state such as the degree of the rotation angle of the slat 158 and the degree of elevation of the slat 158.

  The storage unit 156 includes a RAM that is a rewritable memory, and includes a first storage unit 156-1 and a second storage unit 156-2. The 1st memory | storage part 156-1 memorize | stores the state of the blind 150 changed sequentially by the control part 154 by automatic control or manual control by overwrite at the time of changing.

  On the other hand, when the control unit 154 receives a state holding signal from the central control device 140 or the controller 152, the second storage unit 156-2, which is a characteristic component of the present embodiment, is blinded at the time of reception. 150 states are stored. Even if the state of the blind 150 is changed by automatic control or manual control, and the storage content of the first storage unit 156-1 is changed, the second storage unit 156-2 overwrites the changed state of the blind 150. Never remember.

  The configuration of the blind control system 100 according to the present embodiment has been described above. Next, the control of the blind 150 in the blind control system 100 will be described with reference to FIG.

  When the control unit 154 performs automatic control to change the state of the blind 150 to state A, state B,... In accordance with an instruction from the central controller 140, as shown in FIG. 1 stores these changed states A, B,.

  Then, when the control unit 154 receives the state holding signal from the central controller 140 or the controller 152 when the control state in the control unit 154 is the state C, as shown in FIG. 3, the second storage unit 156- 2 stores this state C. The state information stored in the second storage unit 156-2 at this time is the rotation angle of the slat 158 in the state C and the height of the blind 150. The second storage unit 156-2 stores the state at the time of reception only when the control unit 154 receives the state holding signal, and does not store other states.

  Thereafter, when the control state in the control unit 154 is changed to the state D, state E,..., The first storage unit 156-1 changes the state D, state E,. It memorizes by overwriting sequentially. On the other hand, the second storage unit 156-2 holds the stored contents in the state C. When the control unit 154 receives the state restoration signal from the central control device 140 or the controller 152 when the control state in the control unit 154 is the state E, the second storage unit 156-2 stores the control unit 154. Read state C. Then, the control unit 154 controls the state of the blind 150 based on the state C.

(Effects of the first embodiment)
As described above, according to the present embodiment, the state information on the state of the blind 150 at the past time point is stored in the second storage unit 156-2 where the stored content is not overwritten, so that the central controller 140 automatically Even if the state of the blind 150 is changed by the control, it is possible to return to the desired state of the blind 150 based on the state information at the past time point.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, an external control device is connected to the central control device that manages the control and state of the blind, and the external control device changes the state of the blind to a state different from the control state by the central control device. Interrupt control is performed. In the present embodiment, the description will focus on the parts that are different from the first embodiment.

  As shown in FIG. 4, the blind control system 200 of the present embodiment includes a sunshine detection device 210 installed on the rooftop of a building, a floor relay device 220 installed in the building, a blind communication line 230, a central control. The apparatus 240, the blind 250, the external control apparatus 260, and the external communication line 270 are comprised.

  Among the components of the blind control system 200, the sunshine detection device 210, the floor relay device 220, the blind communication line 230, and the central control device 240 are the sunshine detection device 110 in the first embodiment (FIG. 1), Substantially the same as the floor relay device 120, the blind communication line 130, and the central control device 140 can be used.

  As shown in FIG. 5, the blind 250 includes a controller 252, a control unit 254, a storage unit 256 (first and second storage units 256-1 and 256-2), and a slat 258. Is done. These may be substantially the same as the controller 152, control unit 154, first, second storage units 156-1, 156-2, and slats 158 in the first embodiment (FIG. 2). .

(External control device 260)
The external control device 260 having a characteristic configuration in the present embodiment will be described.
The external control device 260 transmits a notification signal to the central control device 240 based on information such as air conditioning, lighting, and disaster prevention, for example, and causes the central control device 240 to temporarily perform interlocking control. By this interlock control, the height of the blind 250 and the rotation angle of the slat 258 are controlled. As such an external control device 260, for example, BACnet (Building Automation and Control Networking protocol) which is a communication standard for an intelligent building network can be used.

  As shown in FIG. 4, the external control device 260 is connected to the central control device 240 via an external communication line 270, and signals are transmitted and received between the external control device 260 and the central control device 240. When the external control device 260 and the central control device 240 are interlocked, a predetermined display can be performed on the controller 252 of the blind 250 so that the user can recognize this. For example, a light emitting diode (LED) may be provided in the controller 252 so that the LED blinks when the external control device 260 and the central control device 240 are linked.

  The configuration of the blind control system 200 according to the present embodiment has been described above. Next, the control of the blind 250 in the blind control system 200 will be described with reference to FIG.

  In the control of this embodiment, there are two control modes, a remote mode and a local mode. In the remote mode, the control by the central controller 240 is prioritized in each blind 250. In the local mode, the control by the controller 252 is prioritized in each blind 250. First, the remote mode will be described.

(Remote mode)
When the control unit 254 performs automatic control to change the state of the blind 250 to state A, state B,... In accordance with an instruction from the central control device 240, as shown in FIG. 1 stores these changed states A, B,.

  When the control unit 254 is in the state C and the external control device 260 transmits a notification signal to the central control device 240, the control unit 254 performs interlocking control based on the signal from the central control device 240. As a result, the height of the blind 250 and the rotation angle of the slats 258 are controlled based on the notification signal. For example, the height of the blind 250 controlled based on the notification signal is 1 and the angle is 15.

  At the same time, the control unit 254 stores the state C in the second storage unit 256-2. The data stored in the second storage unit 256-2 at this time is a value of height: 8 and angle: 8, which is the height of the blind 250 in the state C and the rotation angle of the slat 258. The second storage unit 256-2 stores the state of automatic control at the time when the control unit 254 starts the interlock control, and does not store other states. Accordingly, the second storage unit 256-2 stores only the state C.

  Thereafter, since interlock control is performed in the control unit 254, the state of the blind 150 is changed to height: 1 and angle: 15. This state D is overwritten and stored in the first storage unit 256-1, but is not stored in the second storage unit 256-2. In addition, since the automatic control is interrupted during the interlock control, the control unit 254 does not receive automatic control data from the central control device 240. Therefore, the control unit 254 does not receive the data of the angle: 7 from the central control device 240 in the next automatic control cycle, and remains in the state D by the interlock control from the external control device 260.

  Since the interlock control is continuously performed in the next automatic control cycle, the control unit 254 receives only the interlock control data from the external control device 260 without receiving the data of the angle: 5 from the central control device 240. . Thereby, the state of the automatic control in the control unit 254 is changed to the state E. This state E is overwritten and stored in the first storage unit 256-1, but is not stored in the second storage unit 256-2.

  Then, when the transmission of the notification signal is completed in the middle of the cycle in which the state is changed from the state E to the next state, the linkage between the external control device 260 and the central control device 253 is released. As a result, the blind 250 returns to the automatic control by the control unit 254, and a state restoration signal is transmitted from the central control device 240 to the control unit 254 at this timing. Thereby, as illustrated in FIG. 6, the control unit 254 reads the state C stored in the second storage unit 256-2 and controls the state of the blind 250 based on the state C.

  If the state restoration signal is not transmitted from the central controller 240 to the control unit 254 at the timing when the interlock control is returned to the automatic control, the control unit 254 reads the state E from the first storage unit 256-1, and the blind 250 The state E is controlled. The height of this state is a state before the interlock control is started, and there is a possibility that the height of the blind 250 when the automatic control of the main body is continued: 8 may be greatly different. The possibility of not being in a desired state (height) increases.

  However, in the present embodiment, since the control unit 254 can control the state of the blind 250 based on the state C at the timing when the automatic control is returned from the interlock control, the state of the blind 250 that has returned to the automatic control is desired. The state (height) can be restored to the blind state by the original automatic control in the next automatic control cycle.

  In the above description, when interlocking with the external control device 260 is performed, the state of the blind 250 at the time when the interlock control is started is automatically stored, but a state holding signal is transmitted to the control unit 254 at an arbitrary timing. The state at that time may be stored. Further, the state restoration signal may be transmitted to the control unit 254 at an arbitrary timing.

  The remote mode control has been described above. Next, local mode control will be described.

(Local mode)
In the local mode, when the linkage between the external control device 260 and the central control device 240 is released, the control by the controller 252 has priority over the control by the central control device 240 in each blind 250. The user transmits a state holding signal and a state restoration signal from the controller 252 to the control unit 254 at an arbitrary timing so that the state of the blind 250 at an arbitrary time is stored in the second storage unit 255 or automatically from the interlock control. Even after returning to the control, the state of the blind 250 can be restored at an arbitrary timing.

(Effect of 2nd Embodiment)
As described above, according to the present embodiment, the state information regarding the state of the blind 250 at the time when the notification signal is transmitted from the external control device 260 can be stored in the second storage unit 256-2 where the stored content is not overwritten. By doing so, when the linkage with the external control device 260 is released, the desired state of the blind 250 can be restored based on the state information at the time when the notification signal is transmitted from the external storage device 260. Is possible.

  In the remote mode, at least one of the state of the blind 250 at the time when the notification signal is received or the state of the blind 250 based on the control signal transmitted at a predetermined cycle may be stored in the second storage unit 256-2. Therefore, when the linkage with the external control device 260 is released, the state of the blind 250 can be controlled based on the stored state information. Therefore, the open / close state reflecting the automatic control can be achieved.

  Furthermore, in the local mode, at least one of the blind state at the time of receiving the notification signal or the blind state based on the control signal transmitted at a predetermined cycle can be stored in the second storage unit 256-2. Even when the state of the blind 250 changes when the linkage with the external control device 260 is released, the state of the blind 250 can be controlled based on the stored state information. Therefore, the state of the blind 250 reflecting the hand operation can be obtained.

  In the present embodiment, the configuration illustrated in FIG. 4 has been described as the blind control system 200. However, the configuration illustrated in FIG. In the configuration example shown in FIG. 7, the external control device 260 is connected not only to the central control device 240 but also to each floor relay device 220 through the external communication line 270. Also with this configuration, control similar to that of the configuration shown in FIG. 4 is possible.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this example. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above embodiment, the storage unit (156, 256) is provided with one second storage unit (156-2, 256-2) in which stored contents are not overwritten, and one state (state C) is stored. However, the present invention is not limited to this. A plurality of storage units corresponding to the second storage unit may be provided to store a plurality of state information. Then, by including information for selecting one of the plurality of stored state information in the state restoration signal, the state of the blind can be controlled based on one of the plurality of state information Is possible. In the above embodiment, the automatic control is interrupted during the interlock control with the external control device 260. However, the control unit 254 receives each state data by the automatic control from the central control device 240 and stores it in the storage unit. It may be possible to memorize. According to this, since the latest automatic control data is stored in the storage unit, it is possible to immediately restore the desired open / closed state when the automatic control is restored.

  In the above embodiment, the “height” and “angle” of the blind have been described as examples of the blind state restored by the state restoration signal, but the present invention is not limited to this. Other states of the blind may be restored as objects to be restored by the state restoration signal, and various other states of the blind control system, for example, the central control device and the controller (for example, effective / Invalidity, change of operation mode, priority of operation, etc.) may be restored.

  Furthermore, in the said embodiment, although the example which controls a some blind with a central control apparatus was demonstrated, this invention is not limited to this. Even when automatic control is performed by a single blind without using a central control device, it is possible to store the state of the blind and restore the stored state, as in the above embodiment.

  In the above-described embodiment, the horizontal blind has been described as an example. However, the present invention is not limited to this, and can be applied to any electric opening / closing device such as a vertical blind, a roll screen, a curtain, and a shutter. . In the case of such a blind, as the state of the blind to be controlled, for example, in the case of a vertical blind, the degree of the louver rotation angle and the degree of the louver movement position can be set. Further, the rolls clone can be set as the degree of the height of the screen, the curtain as the degree of movement of the fabric, the shutter as the degree of lift of the shutter, and so on.

100 Blind Control System (First Embodiment)
110 Sunlight Detection Device 120 Floor Relay Device 130 Blind Communication Line 140 Central Control Device 150 Blind 152 Controller 154 Control Unit 156-1 First Storage Unit 156-2 Second Storage Unit 158 Slat 200 Blind Control System (Second Embodiment)
260 External control device 270 External communication line

Claims (8)

State control means (154, 254) for controlling the state of the blinds (150, 250);
State information storage means (156-2, 256-2) for storing state information relating to the state of the blind at an arbitrary time;
With
When the state control unit receives a state restoration signal instructing restoration of the blind state, the state control unit controls the blind state to the state at the arbitrary time point based on the state information stored in the state information storage unit. A blind characterized by that. The state information storage means can store a plurality of the state information,
The blind according to claim 1, wherein the state restoration signal includes information for selecting one of a plurality of pieces of state information stored in the state information storage unit.   The state information storage means, when receiving a signal instructing to store state information relating to the blind state at the arbitrary time point, stores state information relating to the blind state at the time of reception. The blind according to claim 1 or 2. A plurality of blinds (150, 250);
A central controller (140, 240) connected to the plurality of blinds to control the state of the blinds;
A controller (152, 252) connected to one or more blinds;
With
In each blind, a blind control system in which a state control signal for controlling the state of the blind is transmitted from the central controller or the controller,
Each blind is
State control means (154, 254) for controlling the state of the blind;
State information storage means (156-2, 256-2) for storing state information relating to the state of the blind at an arbitrary time;
With
When the state control means receives the state restoration signal instructing restoration of the blind state from the central control unit or the controller after storing the state information relating to the state of the blind, the state control means is stored in the state information storage means. A blind control system that controls the state of a blind based on state information. The state information storage means can store a plurality of the state information,
The blind control system according to claim 4, wherein the state restoration signal includes information for selecting one of a plurality of state information stored in the state information storage unit. An external control device (260) for controlling blinds in conjunction with the central control device;
When the notification signal is transmitted from the external control device to the central control device, the state information at the time when the notification signal is transmitted is stored in the state information storage means,
6. The blind control system according to claim 4, wherein when the linkage between the central control device and the external control device is released, the central control device transmits the state restoration signal. 7. The central control unit transmits a control signal with a predetermined period to each blind,
Each blind is controlled by either a remote mode in which control from the central controller is prioritized or a local mode in which control from the controller is prioritized,
In the remote mode, when the notification signal is transmitted from the external control device, at least one of the state of the blind at the time of reception of the notification signal or the state of the blind based on the control signal transmitted at the predetermined period is: Stored in the state information storage means,
After the notification signal is received, when the linkage between the central control device and the external control device is released, each blind is in a state stored last in the state information storage means, The blind control system according to claim 6. The central control unit transmits a control signal with a predetermined period to each blind,
Each blind is controlled by either a remote mode in which control from the central controller is prioritized or a local mode in which control from the controller is prioritized,
In the local mode, when the notification signal is transmitted from the external control device, at least one of the blind state at the time of reception of the notification signal or the blind state based on the control signal transmitted at the predetermined period is: Stored in the state information storage means,
The said each blind will be in the state in the time of the said notification signal reception, if the interlocking | linkage of the said central control apparatus and the said external control apparatus is cancelled | released after receiving the said notification signal. The blind control system described in.