JPH01103033A - Power line carrier system - Google Patents

Abstract

PURPOSE:To shorten a transmission time required for a load control and to raise the responsiveness by constituting the titled system so that only one input terminal sends back a cognitive signal against a supervisory signal from a control terminal, and other input terminal of the same address sends back no cognitive signal. CONSTITUTION:A control terminal 2a transmits a supervisory signal. An input terminal 2b receives this signal and outputs a signal corresponding to the contents of a data part, and also, sends back a recognized signal. The outputted signal is inputted to an indicator, and the state of a load apparatus 3 is monitored. An input terminal 2c receives the supervisory signal and outputs a signal corresponding to the contents of the data part to an output terminal. However, the terminal 2c sends back no recognized signal since it is set to an extension mode by extension input mode switch.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power line conveyance system that superimposes a control signal on a power line to control a load.

[Conventional technology]

FIG. 9 is a diagram showing the configuration of a conventional remote control device disclosed in, for example, Japanese Patent Publication No. 60-31307.

In the figure, reference numeral 1 denotes a master unit 2a, 2b which manages the system by synchronizing the entire system.

2c is a terminal device that receives a control signal from the base device 1, controls the connected load equipment according to the information, and has a monitoring input terminal and a function of reporting the status of the load;
Reference numerals a, 3b, and 3c are load devices controlled by the terminals 2a, 2b, and 2c, 4 is a control manual switch, and 5 is a line for transmitting signals.

The operation will be explained based on the figure.

First, the operation when controlling a load device from the base unit 1 will be explained. Each terminal device 2a, 2b.

2C each has a different address and is connected to track 5 from base unit 1.
When the address information in the control signal sent above matches its own address, the load device 3 receives the control signal and becomes the control target according to the content of the control information in the control signal.
Controls a, 3b, and 3c.

Next, a load device 3a is connected to another terminal device by a control input switch 4 attached to a monitoring input terminal of the terminal device 2b,
The operation when controlling 3c will be explained. □ The control input switch 4 of the terminal device 2b is connected to the monitoring input terminal of the terminal device 2b, and transmits its on or off state as a monitoring signal to the base device 1 via the line 5. Base unit 1
, the address of the terminal device 2b to which the control input switch 4 is attached and the program of the control correspondence/subordination relationship between the control input switch 4 and each terminal device are set in advance, and the monitoring signal sent from the terminal device 2b is Only the necessary monitoring information is extracted from the information, the destination of the control signal and the control contents are determined according to the contents of the program, and the control signal is sent onto the line 5 to each terminal device.

After that, the load device 3a is sent from the above-mentioned parent device 1.

A predetermined load device 3a is controlled from the control manual switch 4 using the same procedure as in the case of controls 3b and 3c.

3c control is performed.

[Problem that the invention seeks to solve]

Generally, in a power line transport system, the transmission speed is kept low in order to improve the reliability of transmission, and it takes a considerable amount of time to transmit the control signal - times. Conventional power line transport systems are configured as described above, so remote control from the terminal must be performed via the base unit, which requires at least multiple exchanges of control signals and takes a long time to transmit. Become,
There were problems such as poor response of load equipment control.

In order to solve this problem, the present inventor first developed a terminal device in order to control the load device 3 by the control input switch 4 by directly transmitting and receiving control signals between the terminal devices without going through the parent device 1. ■ Normal mode in which the status notification destination of the monitoring input terminal of the device is set to the source address of the last message received by each terminal ■ Three-way control mode in which the address determined according to certain rules is determined from the self-address of each terminal device A remote control device that can be set to seed mode is proposed.

According to this remote control device, even when using a low-speed communication method such as power line carrier communication, the time required to control the load equipment 3 can be shortened, and a remote control device with high responsiveness for load control can be obtained. .

However, the proposed device does not meet the 1-to-N control requirement of controlling load equipment of multiple control terminals from the control switches of multiple input terminals, which is often required especially in the field of control of lighting, etc. However, in order to realize this function, it was still necessary to perform control via the conventional base unit.

This invention was made to solve the above-mentioned problems, and by directly exchanging remote control from multiple input terminals between terminals without going through a base unit,
The purpose of this study is to shorten transmission time and obtain a power line transport system with high load control responsiveness.

(Means for solving the problem) Based on the above-mentioned conventional device in which the status of the monitoring input terminal of the terminal device is determined from the self-address of the terminal device according to a certain rule, the input device is The terminal is
Some of them are terminals that have the same address as other input terminals and do not return an acknowledgment signal (ACK) in response to a monitoring signal addressed to its own address.

(Operation) As a result, control signals are sent from multiple input terminals at the same address to one control terminal at an address determined according to a certain rule, and the monitoring signal from that IIJ control terminal is , only one input terminal returns a recognition signal, and other input terminals with the same address do not return recognition signals, so multiple recognition signals are not returned and an error occurs, and multiple input terminals directly from −
A control signal can be sent to one control terminal to control a controlled device connected to that control terminal.

〔Example〕

This invention will be explained below with reference to Examples.

FIG. 1 is a system configuration diagram of a power line transport system that is an embodiment of the present invention, FIG. 2 is a configuration diagram of a control terminal device of the same embodiment, and FIG. 3 is a configuration diagram of an input terminal device of the same embodiment. , 4th
5 is a message format diagram of the same embodiment, FIG. 5 is a destination address determination rule diagram of the same embodiment, and FIGS. 6 to 8 are communication sequence diagrams of the same embodiment.

In the figure, 6 is a destination selection switch for the monitoring input terminal of the terminal, 7 is a power S11 control circuit that controls the power supply to the load device 3, and 8 is a human power control circuit that controls the control state of the load device 3 to be controlled. This is a display device for remote monitoring with a terminal device connected to the switch 4. 9 is an additional input mode setting switch.

Depending on the setting of the destination selection switch 6, the destination of the status of the monitoring input terminal is: ■ Normal mode in which each terminal uses the source address of the message it received last time ■ The destination is determined according to certain rules from the own address of each terminal. It can be set to either three-way control mode with a fixed address.

By setting the extension manual mode setting switch 9, it is possible to set the extension input mode in which no acknowledgment signal (ACK) is returned even for control signals addressed to the own address.Here, for convenience of explanation, the format of the control signal is 4
The format is as shown in the figure, and the rules for determining the destination from the own address in the three-way control mode are defined as shown in FIG.

An outline of the operation of this embodiment will be explained below.

In FIG. 1, terminal device 2a and terminal device 2d are control terminal devices, terminal device 2b and terminal device 2C are input terminal devices, and terminal device 2a and terminal device 2d are control terminal devices.
, terminal device 2b and terminal device 2C are in three-way control mode, terminal device 2
d is set to the normal mode by the destination selection switch 6. Further, the terminal device 2C is set to the expansion input mode by the expansion mode setting switch 9. Set the address of the system component device to base unit 1 “00”H, @meter 2a”
01″H0 Terminal 2b “81”) I, Terminal 2c”81
"H, g8 end device 2d"02"H sell.

The operation for each control type will be explained below.

A: When controlling the load device 3 connected to the terminal device 2d from the main device 1.

Control is performed by the communication sequence shown in FIG.

When base unit 1 issues a control request to terminal 2d, base unit 1 sends the source address (OOH) and destination address (
02H) is transmitted to line 5. Terminal 2d
receives this control signal because the destination address of the control signal matches its own address, and outputs an output according to the contents of the data section shown in Fig. 4 to the output terminal.
Sends the signal back to C. The output signal is input to the power control circuit 7, which controls the supply of power to the load device 3, thereby controlling the load device 3. At the same time, the output signal is input to the monitoring input terminal.

The terminal device 2d reads the state of the monitoring input terminal, determines the destination of the monitoring signal according to the destination mode set by the destination selection switch 6, and transmits the monitoring signal. Here, since the terminal device 2d is set to normal mode, it transmits a monitoring signal to the source address of the message received last time, that is, the base unit (OOH). Base unit 1 receives this signal and
It returns the CK signal and monitors the status of the load device 3 connected to the terminal device 2d based on the content of the monitoring signal.

When controlling the load device 3a connected to the terminal device 2a from the Bmm meter 2b control human switch 4.

Control is performed according to the communication sequence shown in FIG. When the control input switch 4 of the terminal device 2b is operated and input is input to the monitoring input terminal, the terminal device 2b reads this state and determines the destination of the monitoring signal according to the destination mode set by the destination selection switch 6. Send a monitoring signal. Here, since the terminal device 2b is set to the three-way control mode, it determines the destination address according to the rules defined in FIG. 5.

Since the address of terminal 2b is “81”H, the destination is “0”.
1"H, that is, the address of the terminal device 2a is attached, and the monitoring signal is transmitted. Since the destination address of the monitoring signal matches its own address, the terminal device 2a accepts this monitoring signal and writes the address of the terminal device 2a in the data section. A signal corresponding to the content is output to the output terminal.The output signal is sent to the power control circuit 7.
is input to control the power supply to the load device 3a, thereby controlling the load device 3a. At the same time, the output signal is input to the monitoring input terminal. The terminal 92a reads the state of the monitoring input terminal, determines the destination of the monitoring signal according to the destination mode set by the destination selection switch 6, and transmits the monitoring signal.

Here, since the terminal device 2a is set to the three-way control mode, the destination address is determined according to the rules defined in FIG. That is, the address of the terminal 2a is "01"H.
Therefore, the destination is assigned an address of "81"H and a monitoring signal is transmitted. Since the destination address of the monitoring signal matches its own address, the terminal device 2b receives this signal, outputs a signal corresponding to the contents of the data portion to the output terminal, and returns the signal to the AC. The output signal is
The information is input to the display 8, and the status of the load device 3 connected to the terminal 2a can be monitored by the terminal 2b.

Since the destination address of the monitoring signal matches its own address, the terminal device 2C receives this monitoring signal and outputs a signal corresponding to the contents of the data section to the output terminal. However, since the SR device 2C is set to the additional input mode by the additional input mode setting switch 9, it does not return an ACK even if the destination address of the monitoring signal matches its own address.

The output signal is displayed as I! 8, terminal 2C
It is also possible to monitor the status of the load equipment connected to the terminal device 2a.

When controlling the load device 3 connected to the terminal device 2a from the control manual switch 4 of the C terminal device 2C.

It is controlled by the communication sequence shown in FIG. When the control input switch 4 of the terminal device 2C is operated and the state is input to the monitoring input terminal, the terminal device 2C reads this state and selects the destination of the monitoring signal according to the destination mode set by the destination selection switch 6. and sends a monitoring signal. Since the terminal 2C is set to the three-way control mode, the terminal 2C determines the destination address according to the rules set forth in FIG. In other words, since the address of the terminal 2C is 81''H, the destination is "01"H, so the control signal is transmitted to the terminal 2a.The terminal 2a has a control signal whose destination address matches its own address. The receiver receives this signal and outputs a signal corresponding to the contents of the data section to the output terminal, and also sends the signal back to the AC.The output signal is input to the power control circuit, which controls the power supply of the load equipment 3. The supply is controlled and the load equipment 3 is controlled.At the same time, the output signal is input to the monitoring input terminal.The terminal device 2a reads the state of the monitoring input terminal and selects the destination set by the destination selection switch 6. The destination of the monitoring signal is determined by the code and the monitoring signal is sent.

Here, since the terminal device 2a is set to the three-way control mode, the destination address is determined according to the rules set forth in FIG. That is, since the address of the terminal device 2a is "01"H, the supervisory signal is transmitted with the address "81"H assigned to the destination. In the terminal device 2C, since the destination address of the monitoring signal matches its own address, the terminal device 2C receives this monitoring signal and outputs a signal corresponding to the contents of the data section to the output terminal. However, since the terminal device 2C is set to the additional input mode by the additional input mode setting switch 9, it does not return an ACK signal even if the destination address of the monitoring signal matches its own address.

The output signal is input to the display 8, and the status of the load device 3 connected to the terminal 2a can be monitored by the terminal 2C.

On the other hand, although the supervisory signal is not generated by the terminal device 2b's own control request, since the destination address of the supervisory signal matches its own address, the terminal device 2b receives the supervisory signal and sends a signal according to the contents of the data section. is output to the output terminal and an ACK signal is sent back. The output signal is input to the display 8, and the terminal 2b can monitor the status of the load device 3 connected to the terminal 2a.

In this way, a plurality of input terminal devices 2b.

2c can directly control the load equipment 3 of the control terminal 2a.

In this embodiment, the extension input mode is set using a switch, but an input terminal exclusively for the extension input mode may be used.

Furthermore, as is clear from the above description, the system of this embodiment uses a control signal and a monitoring signal including a destination address, and when each destination receives the control signal and monitoring signal, a recognition signal is sent. It adopts a communication protocol based on "returning (to AC)."

〔Effect of the invention〕

As described above, the load devices connected to one control terminal from multiple input terminals can be directly controlled without going through the master unit, reducing the transmission time required to control the load devices and controlling the load. A highly responsive power transfer system can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of a power line transport system that is an embodiment of the present invention, FIG. 2 is a configuration diagram of a control terminal device of the same embodiment, and FIG. 3 is a configuration diagram of an input terminal device of the same embodiment. , 4th
The figure is a message format diagram for the power line transport system of the same embodiment, Figure 5 is the rule for determining the destination address in the three-way control mode of the terminal device of the same embodiment, and Figure 6 is the master unit l of the same embodiment. FIG. 7 is a communication sequence diagram when the load device 3 connected to the terminal device 2d is controlled from the terminal device 2d, and FIG. FIG. 8 is a communication sequence diagram of the case where the control manual switch 4 of the terminal device 2c
FIG. 9 is a communication sequence diagram when controlling the load device 3 connected to the terminal device 2a from the terminal device 2a, and FIG. 9 shows a system configuration diagram of a conventional power line transport system. In the figure, 1 is a base device, 2 is a terminal device, 3 is a load device, and 4 is a terminal device.
Reference numeral indicates a control manual switch, 5 indicates a line (power line), 6 indicates a destination selection switch, 7 indicates a power control circuit, 8 indicates a display, and 9 indicates an additional manual mode setting switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A power line transport system characterized by having at least an input terminal device and a control terminal device, and satisfying the following requirements (a) to (c). (a) The power line transport system communicates based on the use of a control signal and a monitoring signal that include a destination address, and sending back a recognition signal when each destination receives the control signal and the monitoring signal. The protocol is adopted. (b) The input terminal device inputs a control request and transmits a control signal from its own address to a control terminal device at an address determined according to certain rules, and a part of the input terminal device transmits a control signal to another input terminal device. This is a terminal device that has the same address as the terminal device and does not return an acknowledgment signal in response to a monitoring signal addressed to its own address. (c) The control terminal device is connected to a controlled device,
It also receives a control signal and controls the controlled device according to the content of the control signal. (2) The power line transport system according to claim 1, further comprising a base unit that performs centralized control and monitoring of the system.