JP2602821Y2 - Remote control device - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, a main controller and a plurality of terminals are connected via a transmission line, and a transmission signal is transmitted from the main controller to each terminal to be provided in each terminal. The present invention relates to a remote control device that controls a load.

[0002]

2. Description of the Related Art Conventionally, as a remote control device of this type, as shown in FIG. 5, a plurality of terminals 2 are connected to a main control device 1 via a transmission line 3 to form a loop-shaped transmission path. A device that controls the on / off and output level of a load 4 such as a lighting load provided in each terminal 2 by transmitting a transmission signal transmitted in one direction from the main control device 1 to a transmission path. Has been proposed. The transmission signal includes an address value designating each terminal device 2 and control data for controlling each load 4.

Each terminal 2 receives the transmission signal through the receiving unit, and if the address value included in the transmission signal is a designated value, takes in the control data of the transmission signal to control the load 4 and changes the state of the load 4. The corresponding monitoring signal is transmitted from the transmission unit. If the address value included in the transmission signal is not the designated value, the transmission unit transmits the transmission signal received by the reception unit. The transmission unit of each terminal 2 is connected to the reception unit of another terminal 2 via the transmission line 3 to form a transmission path, and one of the terminals 2 at both ends of the transmission path is formed. The receiving section and the other transmitting section are connected to main controller 1. With such a configuration, the transmission signal from the main control device 1 is transmitted in one direction (for example, clockwise in FIG. 5) in the transmission path, and the main control device 1 transmits the transmission signal to the target terminal 2. By controlling the load 4 and receiving the monitoring signal from the terminal device 2, the monitoring and control of the load 4 can be performed.

[0004]

By the way, in the above-mentioned conventional remote control device, a transmission signal is transmitted only in one direction through a loop-shaped transmission path formed by the main control device 1 and the terminal device 2. Therefore, when a disconnection occurs in the transmission line 3 or when the terminal device 2 fails, there is a problem that a transmission signal cannot be transmitted to the terminal device 2 after the disconnection point or the failure point. .

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and to transmit a transmission signal from a main controller to a desired terminal even if a transmission line is disconnected or a terminal fails. It is an object of the present invention to provide a remote control device capable of performing the above.

[0006]

According to the present invention, in order to achieve the above-mentioned object, when a load value is connected and a transmission signal received through a reception unit is contained in a transmission signal, the address value is included in the transmission signal. A plurality of terminals for controlling the load according to the control data and transmitting the received transmission signal through the transmission unit when the address value included in the transmission signal is not the designated value, and transmitting the transmission unit of each terminal to another terminal And a main control unit for connecting terminals at both ends of a loop-shaped transmission path formed by connecting to a receiving unit via a transmission line and transmitting a transmission signal transmitted in one direction through the transmission path. In the apparatus, the main control device is provided with transmission interval control means for setting a time interval for transmitting a transmission signal to a fixed time and transmission direction control means for inverting the direction in which the transmission signal is transmitted to the transmission path. Following transfer within the elapsed time is the time limit set in the above said predetermined time from the reception of the last time the No.
If a transmission signal is not received, a transmission direction switching means for switching the transmission line to which the reception unit and the transmission unit are connected is provided in each terminal, and the transmission direction switching means is filled by the output of the reception unit.
When the terminal voltage of the capacitor to be
The transmission line is replaced .

[0007]

According to the above arrangement, the time interval for transmitting the transmission signal from the main controller is set to a fixed time, and the terminal must receive the transmission signal within the time limit set to the fixed time or more. By exchanging the transmission line to which the transmission unit and the reception unit are connected, the terminal transmitting the transmission signal is reversed in the terminal in which the transmission signal from the main control device is not received due to disconnection or failure of the terminal. Further, since the transmission direction control means can reverse the direction in which the transmission signal is transmitted to the transmission line in the main control device, the transmission signal is transmitted to the desired terminal device due to the disconnection of the transmission line or the failure of the terminal device. Otherwise, the transmission direction can be reversed by the transmission direction control means. At this time,
Since the transmission direction of the transmission signal is reversed in the terminal where the transmission signal is no longer received, the transmission signal can be transmitted to the desired terminal by reversing the transmission direction from the main controller. is there. In short, when the transmission signal cannot be transmitted due to the disconnection of the transmission line or the failure of the terminal device, the transmission signal can be transmitted to the terminal device by reversing the transmission direction of the transmission signal. In addition, transmission signals are
Sends out at regular time intervals and outputs from the receiver of the terminal
Charge the capacitor by this capacitor
Since the time limit is limited by using the discharge time of
There is no need for a time limit with an imma circuit or program
Easy.

[0008]

In this embodiment, as in the basic configuration shown in FIG. 5, a loop-shaped transmission line in which a plurality of terminals 2 are sequentially connected to a main controller 1 via a transmission line 3 is formed. And
An optical fiber or the like is used as the transmission line 3. From the main controller 1, a transmission signal in a format as shown in FIG. That is, the transmission signal includes a start signal ST indicating the start of a frame, an address signal AD in which an address value for designating the terminal device 2 is set, a mode signal MD for designating a control mode and a monitoring mode, and a mode signal MD. A data signal DD corresponding to control data or monitoring data, and an end signal ED indicating the end of a frame accordingly.

When a transmission signal with the mode signal MD as the control mode and the data signal DD as the control data is transmitted from the main controller 1 to the transmission line 3, the address signal A of the transmission signal is transmitted.
The terminal 2 specified by the address value of D receives the transmission signal and performs control such as turning on / off the load 4 and dimming according to the control data. In addition, the terminal 2 sets the mode signal MD to the monitoring mode as necessary, and sets the data signal DD
Is transmitted to the transmission line 3 and transmitted to the main controller 1. Further, in each terminal 2, when the set address value is not the designated value, the transmission signal once received is transmitted to the other terminals 2 in order, and the transmission signal is transmitted from the main controller 1 to the other terminal 2. The data is transmitted in one direction through the loop transmission path.

As shown in FIG. 2, the main controller 1 has a transmission interval control means for setting a time interval for transmitting a transmission signal to a predetermined time T. The transmission signal does not necessarily need to control the terminal 2 in the system, and when it is not necessary to control the load 4, a dummy transmission signal that does not control any load 4 is transmitted. That is, as shown in FIG. 3, when not sending a transmission signal V ₁ of the normal in a predetermined time T is to transmit a transmission signal V ₂ of the dummy.

[0011] As shown in FIG.
And a transmission direction switching unit 5 as transmission direction switching means inserted in the device. The transmission direction switching unit 5 is inserted between the transmission lines 3 before and after the terminal device 2, connects the transmission line 3 from which the transmission signal is sent to the reception unit 6, and connects the transmission line 3 that sends out the transmission signal. Connect to the transmission unit 7. The transmission signal received by the receiving unit 6 is input to the signal processing unit 9, and when the address signal AD of the transmission signal has a specified value, the load 4 is controlled according to the control data. Terminal 2
The transmission signal is transmitted as it is. Here, as a method of designating the terminal 2, an address is set in each terminal 2, a method of detecting the coincidence with the address value of the transmission signal, or a method of specifying the address of the received transmission signal in each terminal 2. There is a method in which the transmission signal whose value is decremented (or incremented) is retransmitted to the next terminal device 2 and the terminal device 2 which receives the transmission signal having the address value of 0 controls the load 4. Further, the terminal device 2 is provided with a reception state monitoring unit 8 for detecting whether or not the transmission signal is received by the reception unit 6, and the time limit set to be equal to or longer than the time interval at which the main control device 1 transmits the transmission signal. When the transmission signal is not received by the receiving unit 6, an abnormal signal is sent to the signal processing unit 9. Upon receiving the abnormal signal from the reception state monitoring unit 8, the signal processing unit 9 controls the transmission direction switching unit 5 so that the transmission line 3 to which the reception unit 6 and the transmission unit 7 are connected is switched. Therefore, when the transmission line 3 is disconnected between the main control device 1 and the terminal device 2 or another terminal device 2 is broken and the transmission signal from the main control device 1 is not received, the transmission is performed. The transmission line 3 connected to the receiving unit 6 and the transmitting unit 7 is reversed by the direction switching unit 5. That is,
The transmission line 3 from which the transmission signal has been transmitted is connected to the transmission unit 7, and the transmission line 3 from which the transmission signal has been transmitted is connected to the reception unit 6. In this way, when the terminal 2 no longer receives the transmission signal, it reverses the transmission direction.

The main controller 1 is provided with transmission direction control means for reversing the transmission direction. Therefore, if the transmission signal cannot be transmitted to the desired terminal 2 due to the disconnection of the transmission line 3 or the failure of the terminal 2,
The transmission direction can be reversed by the transmission direction control means. As described above, when no transmission signal is received in each terminal 2, the transmission direction is reversed and the terminal 2 stands by. Therefore, by inverting the transmission direction from main controller 1, these terminals 2 The transmission signal can be transmitted, and as a result, the load 4 can be controlled by transmitting the transmission signal to the terminal 2 other than the fault.

FIG. 4 shows a specific configuration of the terminal 2. The signal processing unit 9 is configured by an integrated circuit IC having a microprocessor, and the reception state monitoring unit 8 uses a capacitor C. The receiving unit 6 and the transmitting unit 7 have 751
An integrated circuit for a receiver such as 75 and an integrated circuit for a driver such as 75174 are used. The transmission direction switching unit 5
A relay Ry of four poles and double throws is used, and the transistor Q is turned on / off by the output of the integrated circuit IC.
The connection relationship between the transmission line 3 and the receiving unit 6 and the transmitting unit 7 is switched by controlling the energization of the coil. That is, the capacitor C is charged by the output of the receiving unit 6, and the terminal voltage of the capacitor C is maintained at a predetermined voltage or more by transmitting the transmission signal from the main control device 1 at fixed time intervals. During this period, the contacts of the relay Ry are maintained in the state shown in FIG.
If the transmission signal is not received due to the disconnection of the transmission line 3 or the failure of the other terminal device 2, the terminal voltage of the capacitor C decreases, and the contact of the relay Ry is switched. Here, it is desirable to provide a diode or the like between the receiving unit 6 and the capacitor C so that the output of the receiving unit 6 is input to the signal processing unit 9 without being smoothed by the capacitor C. In addition, even if the transmission signal can be normally received after the inversion of the contact of the relay Ry and the capacitor C is charged, the falling of the terminal voltage of the capacitor C is set so that the contact of the relay Ry does not return to the original state. The signal processing unit 9 is configured to control the relay Ry only when it is detected.

FIG. 3 shows the operation of the signal processing section 9 when the transmission signal is normally received by the terminal device 2. here,
An address is set to each terminal device 2 and the load 4 is controlled when the address matches the address value of the transmission signal. That is, the reception state monitoring unit 8 determines the presence or absence of a signal input within the set time limit (S1 and S2). If a transmission signal is received before the time limit elapses, the address of the address signal AD is determined. It is determined whether or not the value matches the address set in the terminal device 2 (S3). If the value matches, the mode signal MD is determined (S4). If the mode signal MD is in the control mode, it is determined according to the data signal DD. To control the load 4 (S
5). If the mode signal MD is in the monitoring mode, it is transmitted again (S6). Even when the address value of the address signal AD does not match the address of the terminal 2, the transmission signal is retransmitted to other terminals 2 as it is (S3, S6).

On the other hand, if the transmission signal is not received until the time limit elapses, it is determined that an abnormality such as a disconnection of the transmission line 3 or a failure of the terminal 2 with the main controller 1 has occurred. Then, a transmission signal is created using the address of the address signal AD as the address value of the address signal AD and the data signal DD as monitoring data for abnormality notification (S7), and this transmission signal is transmitted to the main controller 1 (S6). Here, in the terminal 2 behind this terminal 2, there is a time delay before the abnormality is detected, and the transmission signal from the terminal 2 that first detects the abnormality is received. After the transmission signal including the data is transmitted, the abnormality is notified to main controller 1 and the transmission direction is switched. In this way, main controller 1 can know the location where the abnormality has occurred, based on the address of terminal 2 that first notified the abnormality. Using this information, the transmission direction can be switched according to the address of the terminal 2 to which the load 4 to be controlled is connected.

In the above embodiment, one loop is formed as a transmission line. However, even when a multiplexed loop-like transmission line is formed by forming a branched loop in the middle of the transmission line, the above-described technique can be used. It is possible to apply

[0017]

According to the present invention, as described above, the time interval at which the transmission signal is transmitted from the main controller is set to a fixed time, and the terminal transmits the transmission signal within the time limit set to the fixed time or more. If the signal is not received, the transmission line connected to the transmission unit and the reception unit is exchanged, so that the terminal that has not received the transmission signal from the main control unit due to disconnection or failure of the terminal can change the direction of transmitting the transmission signal. Reverse. Further, since the transmission direction control means can reverse the direction in which the transmission signal is transmitted to the transmission line in the main control device, the transmission signal is transmitted to the desired terminal device due to the disconnection of the transmission line or the failure of the terminal device. Otherwise, the transmission direction can be reversed by the transmission direction control means. At this time, since the transmission direction of the transmission signal is reversed in the terminal device where the transmission signal is no longer received, the transmission signal must be transmitted to the desired terminal device by reversing the transmission direction from the main controller. In the event that the transmission signal cannot be transmitted due to the disconnection of the transmission line or the failure of the terminal device, the transmission signal can be transmitted to the terminal device by reversing the transmission direction of the transmission signal. It has the advantage that. And the main control equipment
The transmitter sends out transmission signals at regular intervals,
The capacitor is charged by the output of the receiver of the terminal.
The time limit is set using the discharge time of this capacitor.
Time limit by timer circuit or program
There is an advantage that it is unnecessary and the configuration is simple.

[Brief description of the drawings]

FIG. 1 is a block diagram of a terminal device used in an embodiment.

FIG. 2 is an operation explanatory diagram showing a form of a transmission signal in the embodiment.

FIG. 3 is an operation explanatory diagram of the embodiment.

FIG. 4 is a specific circuit diagram of a terminal device used in the embodiment.

FIG. 5 is a schematic configuration diagram of a remote control device.

FIG. 6 is a diagram showing a format of a transmission signal used for a remote control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main control device 2 Terminal 3 Transmission line 4 Load 5 Transmission direction switching part 6 Receiving part 7 Transmitting part 8 Reception state monitoring part 9 Signal processing part

Claims (1)

(57) [Scope of request for utility model registration] When an address value included in a transmission signal received through a receiving unit is a designated value, the load is controlled according to control data included in the transmission signal, and the address value included in the transmission signal is controlled. Are not specified values, a plurality of terminals that transmit received transmission signals through the transmission unit, and a loop formed by connecting the transmission unit of each terminal to the reception unit of another terminal via a transmission line. And a main controller for transmitting a transmission signal transmitted in one direction through the transmission line to a terminal device at both ends of the transmission line, and setting a time interval for transmitting the transmission signal to a fixed time. The main control unit is provided with transmission interval control means and transmission direction control means capable of reversing the direction in which the transmission signal is transmitted to the transmission line, and the time elapsed since the previous reception of the transmission signal is set to the predetermined time or more. The next transmission within the specified time limit
If a transmission signal is not received, a transmission direction switching means for switching the transmission line to which the reception unit and the transmission unit are connected is provided in each terminal, and the transmission direction switching means is filled by the output of the reception unit.
When the terminal voltage of the capacitor to be
A remote control device characterized by exchanging transmission lines .