JPH0544379A - Motor-driven opening and closing device - Google Patents

Abstract

PURPOSE:To remote-control any of a plurality of blinds from any one of a plurality of controllers by communicating the plurality of blinds with the plurality of the controllers so as to form a loop-like transmission path. CONSTITUTION:A plurality of blinds 21 through 2 (h+n) and a plurality of controllers 12, 13 are connected together through the intermediary of communication wires 3.... Further, transmitter and receiver circuits 9... are provided to the blinds, respectively, and receiver circuits 4a, 4b, transmission circuits 5a, 5b and transmitter circuits 6a, 6b are provided in the controllers 12, 13, respectively so as to form a loop-like transmission path as a whole. Further, even after instruction signals delivered from the controllers 12, 13 are transmitted to the blinds and the other controller, successively, the signals are inputted to the original controllers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric opening / closing device, and more particularly to an electric opening / closing device having a plurality of opening / closing devices such as blinds, shutters and curtains, and a plurality of controllers for collectively controlling the operations of these plural opening / closing devices. Regarding

[0002]

2. Description of the Related Art Currently, a plurality of electric blinds are controlled by a single controller so that the heights of the plurality of blinds and the angles of the blades are set to appropriate values in terms of both lighting and cooling and heating efficiency, and the blinds are aligned. Sells electric blind systems that help maintain the overall aesthetics of the building as well as save on heating and cooling costs. In order to make the operation of these electric blinds more reliable, a plurality of blinds and a controller are connected to the same transmission line, and a command signal output by the controller for controlling the operation of the blinds is sent to the same transmission line. A system has been proposed in which a plurality of blinds are given to the blinds via the blinds, and the command signals passing through the blinds are returned to the controller itself.

Next, the proposed electric blind system will be described. This electric blind system is provided with one controller and a plurality of electric blinds collectively controlled by this controller.
The controller is connected via a signal line to one blind of the plurality of blinds, and this blind is connected to another blind via another signal line. Similarly, a plurality of blinds are connected in series one after another via signal lines, and the last blind connected in series is connected to the controller via another signal line. In this way, one controller and a plurality of electric blinds are communicatively connected by a signal line in a closed loop.

In the electric blinds connected in a loop as described above, when the controller collectively or individually commands the blinds to move up and down and the blades to open and close, first of all, the first blind adjacent to one side of the controller. A command signal is received in the blind. Then, this command signal is transmitted from the first blind to the next blind via the signal line. Similarly, this command signal is transmitted to the last blind connected in a loop, and the command signal is given to the controller itself from the last blind adjacent to the other side of the controller through a signal line. In addition,
The command signal that has passed through the loop-shaped transmission line and returned to the controller itself is not transmitted from the transmission circuit of the controller to the transmission line again.

As described above, the command signal transmitted from the transmission circuit of the controller is transmitted to all blinds and also to the controller itself. When the blinds are collectively designated based on the reception command signal or individually designated, the blinds are lifted and the blades are opened and closed. Further, since the controller can receive the command signal via the receiving circuit, it can recognize that the transmitted command signal has been reliably transmitted to all the blinds connected to the system.

When a signal is sent from the controller to the transmission path to instruct the blinds to move up and down and the blades to open and close for all blinds, all the connected blinds are set to the same height and angle. By applying the above-mentioned electric blinds to the blinds that face the same direction with respect to the sun, it is possible to set all the blinds to the proper elevating state or the opening and closing state of the blades, which saves heating and cooling costs and the aesthetics of the whole building. Can be maintained.

[0007]

However, the controller of the above-mentioned proposed electric blind system has the following problems.
It does not send the signal it receives to the looped transmission path, but the command signal it sent goes through the closed loop transmission path and returns to the controller to receive all blinds connected to this closed loop. Since each of them is configured to receive the command signal and be controlled normally in accordance with the command signal, there is a restriction that only one controller can be connected to the transmission path having the closed loop. Therefore, if the user wants to operate the electric blind, he / she first has to go to the installation location of the controller, which is not convenient.

Therefore, an object of the present invention is to provide a switchgear such as a plurality of blinds connected to a transmission line forming a closed loop from any place in a site, a building, or a room where the transmission line is installed. A command signal is transmitted via the device so that the operation can be controlled as desired, thereby providing an easy-to-use electric switchgear.

[0009]

An electric switchgear according to the present invention includes a plurality of switchgear and a plurality of the switchgear.
A plurality of controllers for transmitting command signals for controlling the operation, and a transmission line forming a loop so as to communicatively connect each of the plurality of switching devices and each of the plurality of controllers to each other are configured. It

Further, each of the plurality of opening / closing devices is
First receiving means for receiving a signal transmitted via the transmission path, first transmitting means for transmitting a signal via the transmission path, and transmitting the signal received by the receiving means And a first transfer means for transferring to the means.

Further, each of the plurality of controllers transmits a signal including the command signal to any one of the plurality of opening / closing devices or any one of the plurality of controllers via the transmission path. Transmitting means, second receiving means for receiving a signal transmitted from any of the plurality of switchgear devices or any of the plurality of controllers via the transmission path, and received by the second receiving means Second transfer means for transferring the generated signal to the second transmission means, and disabling means for disabling the second transfer means when the second transmission means transmits the command signal. It

Further, in the electric switchgear, the command signal transmitted from the second transmitting means of any controller of the plurality of controllers is transmitted through the transmission path to the plurality of switchgear and the arbitrary controller. Except for the above, the data is sequentially transmitted to the plurality of controllers, and then the second controller of the arbitrary controller is controlled to be input.

[0013]

The electric switchgear according to the present invention is configured as described above, and the command signal transmitted from the second transmitting means of any one of the plurality of controllers is first transmitted via the loop-shaped transmission path. It is received by the switchgear or controller on one of the adjacent sides. When the switchgear is adjacent to the switchgear, the command signal is received by the first receiving means of the switchgear and is transmitted again to the transmission path from the first transmitting means via the first transfer means. If the controllers are adjacent to each other, the command signal is received by the second receiving means of the controller, transferred to the second transmitting means of the controller via the second transfer means, and accordingly transmitted to the transmission path. The command signal transmitted to the transmission path is then received by the first receiving means of the adjacent switchgear or the second receiving means of the controller. Also in this switchgear or controller, the command signal is transmitted again to the transmission path by the first transmitting means or the second transmitting means. In this way
The command signal transmitted from the arbitrary controller is sequentially transmitted to each of the plurality of opening / closing devices or the plurality of controllers. In this way, the first transmitting means of the switchgear or the second transmitting means of the controller, which finally receives the command signal sequentially transmitted in the closed loop, is transmitted to the second receiving means of the arbitrary controller which is the transmission source of the received command signal. Send.
Since the second transfer means of the arbitrary controller is disabled by the disabling means, the command signal received by the second receiving means is not transferred to the second transmitting means of the arbitrary controller. , Will not be transmitted to the transmission line again. Therefore, the command signal transmitted from any one of the plurality of controllers is sequentially received by each of the plurality of switchgear connected to the loop-shaped transmission path and each of the plurality of controllers other than the arbitrary controller. , Is input to the arbitrary controller again.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a schematic block diagram showing the configuration of an electric blind system according to an embodiment of the present invention. Next, the configuration of an electric blind system according to an embodiment of the present invention will be described with reference to FIG. The electric blind system includes centralized controllers 12 and 13,
Blinds 21, 22, ... 2h, 2 (h + 1), ... 2
(H + n) and the loop-shaped communication line 3 are included.

Each of the centralized controllers 12 and 13 is for individually or collectively controlling the operation of each blind, and is a microprocessor (MP).
U) 8a and 8b, respectively. The MPUs 8a and 8b respectively have device designation switches 71a and 7a.
Each of 1b is connected, and each of operation designation switches 72a and 72b is connected.

Each of the device designating switches 71a and 71b is a switch for designating a blind as a target for commanding operations such as raising, lowering, stopping, and opening and closing of a blind (slat), and one specific one. It is possible to specify blinds and all blinds. Each of the operation designating switches 72a and 72b is a switch for designating operation contents such as raising, lowering, stopping of the blind, opening and closing of the slat, and the like.

Receiving circuits 4a and 4b and transfer circuits 5a and 5b are connected to MPUs 8a and 8b, respectively, and transmitting circuits 6a and 6b are further connected. Each of the receiving circuits 4a and 4b includes a blind 2 (h + n) and a blind 2 connected to the preceding stage.
Receive the signals transmitted from each of the h. Each of the receiving circuits 4a and 4b responds to the received signal by the MPU.
It is applied to each of 8a and 8b, and operates to transfer to each of transmission circuits 6a and 6b through each of transfer circuits 5a and 5b.

Each of the transfer circuits 5a and 5b transfers the command signal from the other controller among the signals received by the reception circuits 4a and 4b connected to the preceding stage to each of the transmission circuits 6a and 6b. The command signals from the respective controllers 12 and 13 operate so as not to be transferred to the transmission circuits 6a and 6b, respectively. The transfer operation of each of the transfer circuits 5a and 5b is controlled by each of the MPUs 8a and 8b determining a signal received by each of the reception circuits 4a and 4b.

Each of the transmission circuits 6a and 6b operates so as to amplify the reception signal in each of the reception circuits 4a and 4b given through each of the transfer circuits 5a and 5b and send it to the communication line 3. Further, each of the transmission circuits 6a and 6b operates so as to input a command signal for each blind operation given from each of the MPUs 8a and 8b, amplify the command signal, and then send it to the connected communication line 3. The signals sent from the transmission circuits 6a and 6b are transmitted to the blinds 21 and 2 respectively.
2, ... 2h, 2 (h + 1) ..., 2 (h + n), the transmission circuit 6a of the controller 12 is connected to the blind 21 via the communication line 3, and the controller 13
The transmission circuit 6b of is connected to the blind 2 (h + 1).

If there are inputs from the operation designating switches 72a and 72b, the MPUs 8a and 8b generate corresponding command signals based on the inputs from the device designating switches 71a and 71b, respectively, and transmit the signals. It derives to each of 6a and 6b. At this time, each of the MPUs 8a and 8b receives the transfer circuit 5
The transfer operation of each of a and 5b is controlled to be disabled. M
Each of the PUs 8a and 8b has an operation designating switch 7
If there is no signal input from each of 2a and 72b, activate each of transfer circuits 5a and 5b,
The received signals in the receiving circuits 4a and 4b are controlled to be transferred to the transmitting circuits 6a and 6b, respectively.

Each of transfer circuits 5a and 5b is activated by energizing each of MPUs 8a and 5b to each of circuits 5a and 5b. The transfer circuits 5a and 5b are disabled by the MPUs 8a and 8b cutting off the above-mentioned energization.

Each blind 21, 22, ... 2h, 2 (h
+1), ..., 2 (h + n) are provided with the MPU 10. An electric motor 11 for electrically driving the transmission / reception circuit 9 and the blind is connected to the MPU 10.

The transmission / reception circuit 9 of the blind 21 is connected to the communication line 3
Is connected to the transmission circuit 6a of the centralized controller 12 via the and the transmission / reception circuit 9 of the blind 22. Similarly, the transmission / reception circuit 9 of the blind 2 (h + 1) is connected to the transmission circuit 6b of the centralized controller 13 via the communication line 3 and also to the transmission / reception circuit 9 of the blind 2 (h + 2) (not shown). Further, similarly, the transmission / reception circuit 9 of the blind 2 (h + n) receives the blind 2 (h + n) (not shown) immediately before the blind 2 (h + n) via the communication line 3.
(n-1) is connected to the transmitting / receiving circuit 9 and is also connected to the receiving circuit 4a of the centralized controller 12. Similarly,
The transmission / reception circuit 9 of the blind 2h is connected to the transmission / reception circuit 9 of the preceding blind 2 (h-1) (not shown) and is also connected to the reception circuit 4b of the centralized controller 13. Other blinds 2 except the blinds 21, 2h, 2 (h + 1) and the blind 2 (h + n) described above.
The transmission / reception circuits 9 of 2, ..., 2 (h + n−1) are connected to the blind transmission / reception circuit 9 connected to the previous one via the communication line 3 and to the blind transmission / reception circuit 9 to the next one, respectively. Connected. In this way, the centralized controllers 12 and 13 and the blinds 21, 22, ...
2h, 2 (h + 1), ... 2 (h + n) are connected in series via a communication line 3 forming a closed loop.

The transmission / reception circuit 9 of each blind receives the signal given from the communication line 3 connected thereto, amplifies the received signal in accordance with the signal, sends it out again to the communication line 3, and the blind or the blind connected to the next stage. Operates to transmit to a centralized controller. In addition, the transmission / reception circuit 9 gives a signal received via the communication line 3 to the connected MPU 10, and accordingly, the electric motor 11 is drive-controlled based on the content of the received signal. Therefore, the electric motor 11 is controlled by a signal given through the communication line 3, and each blind is driven up and down or opened and closed.

The MPU 10 temporarily stores the input signal supplied from the transmitting / receiving circuit 9 in its internal buffer and analyzes it. As a result of this analysis, if it is determined that the input signal is a signal directed to the self-blind, the MPU 10 drives the electric motor 11 based on the content of the signal to lift or lower or open or close the slat. On the contrary, as a result of the above-mentioned analysis, if the input signal is not the signal for its own blind, the MPU 10 does not perform any processing operation.

FIG. 2 is a diagram showing the waveform of the command signal transmitted by the communication line 3 shown in FIG. 1 above.

In FIG. 2, the command signal is composed of a serial signal composed of a binary code. The serial signal includes operation contents for a blind operation defined in advance by a fixed number of bits. In the signal shown in FIG. 2, “1” and “0” are represented by the size of the signal period, 2 ms are used for “1”, and 4 ms are used for “0”. Although used, this is only one example. That is, the signal cycle is not limited to the above, and "1" or "0" may be represented by the magnitude of the signal amplitude regardless of the signal cycle, or another modulation method may be used.

FIG. 3 is a flow chart for explaining the operation of the centralized controller shown in FIG. 1 above. The flow shown in FIG. 3 is stored in advance as a program in each of the MPUs 8a and 8b of the centralized controllers 12 and 13 as a program. Execution of the stored program is controlled by MPU 8a and MPU 8b.

Next, the specific operation of the embodiment of the present invention will be described with reference to FIGS.

The blinds 21, 22, ... 2h,
When 2 (h + 1), ..., 2 (h + n) transmitting / receiving circuits 9 constantly receive a signal from the communication line 3, the received signal is amplified and transmitted to the communication line 3 according to the signal, and connected to the next stage. Suppose we are working to feed a blind or centralized controller.

Further, the processing program shown in FIG.
It is a program of a subroutine called from a main routine of a program executed by each of the MPUs 8a and 8b. In each of the receiving circuits 4a and 4b, in response to receiving a signal from the communication line 3 connected thereto, each of the MPUs 8a and 8b transfers its control from the main routine to this subroutine.

First, description will be made assuming that each of the operation designating switches 72a and 72b provided on the centralized controllers 12 and 13 is not externally operated by the user. Central controller 12 and 13 MPU
Each of 8a and 8b is executing a main routine, and when it is detected that a signal is received through each of receiving circuits 4a and 4b, the control thereof is shown in FIG. 3 from the main routine. Transition to a subroutine.

First, each of the MPUs 8a and 8b is
In the process of step S1 (abbreviated as S1 in the figure), it is determined whether or not the received signal is a command signal from another controller other than the controller. At this time, since the centralized controllers 12 and 13 are not externally operated as described above, the processing of the next step S2 is executed according to this determination processing.

In the process of step S2, the MPU 8a
And the MPU 8b each have an operation designating switch 72.
It is determined whether or not there is an input signal by switch operation from each of a and 72b. Switch 7 at this time
Since there is no input signal from each of 2a and 72b,
In response to this, the processing of the next step S7 is executed.

In the process of step S7, the MPU 8a
And 8b respectively activate (ON) the transfer circuits 5a and 5b to activate them. After that, MPU
The control of 8a and 8b returns to the main routine.

As described above, when the operation designating switches 72a and 72b of the centralized controllers 12 and 13 are not externally operated, the MPUs 8a and 8b are used.
Respectively, the transfer circuits 5a and 5b are set to the ON state, so that the reception circuits 4a and 4b are
The received signals in each are the transmission circuits 6a and 6b.
Are transferred to each. That is, each of the centralized controllers 12 and 13 is also set to receive a signal given from the communication line 3 and transmit the received signal to the communication line 3 so that it can be transmitted to the next blind or controller. As a result, the controllers 12 and 13 connected in a closed loop by the communication line 3 and the plurality of blinds 21, 22, ...
In 1), ..., 2 (h + n), the signal circulates via the communication line 3.

Next, description will be made assuming that the operation designating switch 72a of the centralized controller 12 is externally operated.

When the MPU 8a detects the reception of a signal via the receiving circuit 4a, the MPU 8a shifts its control from the main routine to the subroutine shown in FIG.

In the processing of step S1, the MPU 8a uses another controller, that is, the centralized controller 13
It is determined that the signal from No. 1 is not received, and then it is determined that there is an input from the operation designating switch 72a in the process of the next step S2. In response to this, the processing of the next step S3 is executed.

In the process of step S3, the MPU 8a
Is an operation designation switch 72a and a device designation switch 71
Based on the external operation of a, a command signal including the operation designation content and the equipment designation content is sent to the signal line 3 via the transmission circuit 6a. After that, the processing shifts to the next step S4,
The transfer circuit 5a is deenergized and turned off.

After that, the MPU 8a returns the control from the subroutine to the main routine again. The command signal transmitted from the transmission circuit 6a through the communication line 3 as described above is given to the transmission / reception circuit 9 of the blind 21. The transmission / reception circuit 9 of the blind 21 amplifies a given signal,
It is given to the transmitting / receiving circuit 9 of the blind 22 to be connected next via the communication line 3. Then, similarly to the above-mentioned blind 21, the command signal is transmitted from the transmitting / receiving circuit 9 of the blind 22 to the transmitting / receiving circuit 9 of the frind 23 connected to the next stage. When the transmission / reception circuit 9 of the blind 2h receives the sequentially transmitted signals as described above, the transmission / reception circuit 9 of the blind 2h gives the received command signal to the reception circuit 4b of the centralized controller 13. The receiving circuit 4b is
It receives the given command signal and responds to this received signal by M
Give to PU8b.

The MPU 8b of the centralized controller 13 transfers the control from the main routine being executed to the subroutine shown in FIG.

In the process of step S1, the MPU 8b uses another controller, that is, the central controller 12
It is determined that the command signal from is received, and accordingly, the process proceeds to the next step S5.

In the process of step S5, the MPU 8b
Discriminates that there is no signal input by the external operation from the operation designating switch 72b, and accordingly moves to the processing of the next step S7, and the transfer circuit 5b is energized and turned on in the same manner as described above.
Set to state. After that, the MPU 8b returns the control from this subroutine to the main routine.

As described above, in the centralized controller 13, the reception signal in the reception circuit 4b is transferred to the transmission circuit 6b via the transfer circuit 5b, is sent out to the communication line 3 in response, and is connected to the blind 2 (connected to the next stage. h + 1) is given to the transmitting / receiving circuit 9.

Blind 2 (h + 1) to which the command signal of the centralized controller 12 is given from the centralized controller 13.
The transmission / reception circuit 9 transmits the command signal to the next blind in the same manner as the blind 21 described above. That is, the command signals transmitted sequentially are blind 2 (h +
n) and the blind 2 (h +
It is transmitted from the transmitting / receiving circuit 9 of n) to the receiving circuit 4a of the centralized controller 12 through the communication line 3.

A command signal for operating the operation designating switch 72a, which is sequentially transmitted to all the blinds and the centralized controller 13 and received via the receiving circuit 4a, is MP.
The reception is detected by U8a. The MPU 8a transfers its control from the main routine being executed to the subroutine shown in FIG. In the process of step S1, the MPU 8a determines that the received signal is the command signal transmitted by itself and is not the command signal from another controller, that is, the centralized controller 13, and accordingly shifts to the process of the next step S2. Then, as in the above, the designation switch 72
It is determined that there is an input from a, and the process proceeds to the next step S3.

In the processing of step S3 and step S4, the MPU 8a continues to send a command signal by operating the operation designating switch 72a to the communication line 3 via the transmission circuit 6a, cut off the energization to the transfer circuit 5a, and transfers. The circuit 5a is continuously set to the OFF state. Then M
The control of the PU 8a is returned from this subroutine to the main routine.

As described above, the central controller 12
Since the transfer circuit 5a of 1 is maintained in the OFF state, the reception signal of the reception circuit 4a is not transferred to the transmission circuit 6a. That is, the command signal in the centralized controller 12 sequentially circulates through all blinds and all controllers connected in a loop via the signal line 3, and then is input to the centralized controller 12 again.

Next, description will be made assuming that the operation designating switch 72a of the centralized controller 12 is externally operated and the operation designating switch 72b of the centralized controller 13 is externally operated.

Even if the operation designation switch 72b of the centralized controller 13 is externally operated and its input signal is given to the MPU 8b, the MPU 8b does not operate in the process of step S1 of FIG.
It is determined that the command signal given from the controller 2 is received, and accordingly, the process proceeds to the next step S5, and it is determined that there is an input from the operation designating switch 72b. Accordingly
The process proceeds to the next step S6.

In the process of step S6, the MPU 8b
Resets the command signal transmission so that the command signal based on the operation content given according to the external operation of the operation designating switch 72b is not transmitted to the communication line 3 via the transmission circuit 6b. At this time, since the centralized controller 13 has not originally sent the command signal by operating the operation designating switch 72b to the signal line 3, there is no change in operation in each blind.

After that, the MPU 8b shifts to the processing of step S7 and turns on the transfer circuit 5b. That is, MPU
8b continues to set the transfer circuit 5b to the ON state. As a result, the instruction by the external operation of the operation designating switch 72b of the centralized controller 13 becomes invalid.

When the centralized controller 12 is externally operated while the centralized controller 13 is externally operated, the centralized controller 12 performs the same operation as the centralized controller 13 described above, and the centralized controller 13 is operated. In, the operation similar to that of the centralized controller 12 described above is performed.

Next, description will be made assuming that the centralized controller 12 and the centralized controller 13 are externally operated at the same time.

In this case, as described above, each of the MPUs 8a and 8b sends a command signal based on the switch operation in the transmission circuits 6a and 6a in the process of step S3.
It is sent to the communication line 3 via each of b. After that, the processing shifts to step S4 and the transfer circuits 5a and 5b are turned off.
Set to FF state. As a result, as described above, the command signal of the centralized controller 12 is sequentially transmitted to the next blind via the blinds 21 and 22, but when the blind 2h is reached, this command signal is sent to the blind 2h.
It is given to the receiving circuit 4b of the centralized controller 13 via the transmitting / receiving circuit 9 of FIG. At this time, since the transfer circuit 5b of the centralized controller 13 is in the OFF state, the command signal in the centralized controller 12 received by the receiving circuit 4b is not transferred to the transmitting circuit 6b. As a result, this command signal is not transmitted to the blinds connected to the blind 2 (h + 1) and the blinds and the receiving circuit 4a of the centralized controller 12. Similarly, the command signal in the centralized controller 13 is the next blind 2 (h + 1).
From the blind 2 (h + n) to the receiving circuit 4a of the centralized controller 12,
The blinds 21 to 2 (h + n) are not transmitted to the blinds and the receiving circuit 4b of the centralized controller 13. That is, each of the receiving circuits 4a and 4b of the centralized controllers 12 and 13 receives not the command signal of its own but the command signal of another controller. In response to the reception of this command signal, each of the MPUs 8a and 8b executes the subroutine shown in FIG.

In the processing of step S1, each of the MPUs 8a and 8b determines that it has received a command signal from another controller, and accordingly, in the next step S5.
Process shifts to. In the process of step S5, it is determined that there is a signal input from each of the operation designating switches 72a and 72b, and accordingly, in the process of step S6, each of the MPUs 8a and 8b resets the transmission of the command signal. Then, in the next step S7, each of the transfer circuits 5a and 5b is set to the ON state.

As a result of the above-described operation, when the centralized controllers 12 and 13 are simultaneously operated, the complete command signal is not transmitted to each of the blinds. That is,
As shown in FIG. 2, since the command signal is serial transfer, the normal serial transfer is interrupted by the centralized controller 12 or 13 interposed in the middle, so that the command signals of the centralized controllers 12 and 13 become invalid, The target blind becomes inoperative.

As described above, the central controller 1
If the operation timings of the switches 72a and 72b are adjusted so that the command signals transmitted from 2 and 13 do not interfere with each other on the communication line 3 configured in a loop, targeting all blinds connected in a loop. Remote control from the controller is possible.

When the controller 13 (12) is operated during the operation of the controller 12 (13) and when the controllers 12 and 13 are operated simultaneously, the command signals from the respective controllers become invalid. The invalidation can be recognized because the desired designated blind does not operate. Further, when such an invalid state is entered, it is possible to operate the desired blind by shifting the operation timing between the controllers and performing the operation again.

In the above-described embodiment, it is confirmed that the desired blind does not operate and the invalidity of the command signal by the controller operation is recognized. However, this invalidity is notified to a third party including the user. The usability can be further improved by providing the centralized controllers 12 and 13 with a notification unit including a display element or the like, or by providing them separately.

Further, when the centralized controllers 12 and 13 are operated simultaneously, the command signals from any of the controllers are invalid. However, the priority order of the operations between the centralized controllers is set in advance, and the operation in the centralized controller having a high priority order is performed. If it is effective, its usability is further improved.

Further, in the above-mentioned embodiment, the centralized controller is set to be two controllers 12 and 13, but it is also possible to implement the same with three or more controllers.

Further, although the blind is operated in the present embodiment, the present invention is not limited to the blind and can be similarly applied to a curtain, a shutter or the like which is an opening / closing device similar to the blind.

[0066]

As described above, according to the present invention, the plurality of switchgear devices and the plurality of controllers are provided with a transmission line forming a loop so as to communicate with each other, and any one of the plurality of controllers is provided. The command signal transmitted from the second transmitting means of the arbitrary controller is sequentially transmitted to the plurality of controllers excluding the plurality of switchgear and the arbitrary controller via the transmission path, and then input to the second receiving means of the arbitrary controller. Is controlled as
It is possible to connect a plurality of controllers to arbitrary positions between a plurality of switchgear connected to a loop-shaped transmission line, and send a command signal from each of the controllers to remotely operate the desired switchgear. There is an effect that there is.

Due to the above-described effects, it becomes possible to install the controllers at a plurality of locations on the transmission path, which are separated from each other. Further, when additionally installing each of the controller and the switchgear, the wiring work for the wiring forming the loop-shaped transmission path is not necessary. Also,
Since it becomes possible to easily connect an additional controller to a position on the transmission path where the user can easily use it, the desired switchgear can be remotely operated from a plurality of places distant from each other, and usability is improved.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of an electric blind system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a waveform of a command signal transmitted by the communication line shown in FIG.

3 is a flowchart for explaining the operation of the centralized controller shown in FIG.

[Explanation of symbols]

3 communication lines 4a and 4b reception circuit 5a and 5b transfer circuit 6a and 6b transmission circuit 8a, 8b and 10 MPU 9 transmission / reception circuit 11 electric motor 12 and 13 centralized controller 21, 22, ... 2h, ... 2 (h + 1) ,. (H +
n) Blinds 71a and 71b Device designation switches 72a and 72b Operation designation switches In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A plurality of opening / closing devices, a plurality of controllers transmitting command signals for controlling the operation to the plurality of opening / closing devices, each of the plurality of opening / closing devices and each of the plurality of controllers. A transmission line forming a loop so as to be communicatively connected to each other, each of the plurality of switchgear devices includes a first receiving unit for receiving a signal transmitted via the transmission line, and the transmission line. First transmitting means for transmitting a signal via the transmitting means, and first transferring means for transferring the signal received by the receiving means to the transmitting means, wherein each of the plurality of controllers includes the plurality of opening / closing devices. A second transmission means for transmitting a signal including the command signal to any of the plurality of controllers via the transmission path, and the plurality of opening / closing devices. Second receiving means for receiving a signal transmitted from any one of the plurality of controllers or the plurality of controllers via the transmission path, and the second transmitting the signal received by the second receiving means. Second transfer means for transferring to the means, and further disabling means for disabling the second transfer means when the second transmitting means transmits the command signal, and any one of the plurality of controllers is provided. After the command signal transmitted from the second transmission means of the controller is sequentially transmitted to the plurality of controllers excluding the plurality of switchgear and the arbitrary controller via the transmission path, the command signal of the arbitrary controller is transmitted. 2. An electric switchgear which is controlled so as to be input to the receiving means.