JPS63316936A - Power line delivery controller - Google Patents

Abstract

PURPOSE:To identify the stoppage of conduction by a wall switch from power failure and to enable the reception of a load control instruction signal to be performed even in operating the wall switch, by providing a power failure detecting means and a carrier delivery means in a terminal equipment, and the power failure detecting means a carrier receiving means and an arithmetic means in a control terminal equipment. CONSTITUTION:The terminal equipment 7 sends a carrier from the carrier delivery means 9 when the period of voltage drop detected by a voltage drop detecting means 8 exceeds a preset value. The arithmetic operation control means 19 of the control terminal equipment 15, when the voltage decrease of a power line 6 being detected by a voltage detecting means 18, controls a load control means 16 so as to maintain the state of a load 14 when the carrier reception means 17 detects the carrier successively in the above detecting period, and controls the state of the load 14 inversely when the reception means 17 receives an intermittent carrier. Thereby, it is possible to discriminate the operation of the wall switch 11 from the momentary disconnection or the power failure generated in the power line, and to receive the carrier even in operating the wall switch by performing the inverse control of the load while operating the wall switch, and maintaining a present status when the hit or the power failure is generated in the power line.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a power line carrier control device using a wall switch type control terminal that can remotely control equipment by superimposing a carrier signal onto a commercial power line in a general household. It is related to.

2. Description of the Related Art In recent years, various power line carrier control systems have been reported that use commercial power lines as transmission lines to remotely control loads such as electrical equipment by transmitting and receiving control signals composed of high-frequency carrier waves. Among these, a control terminal for use in existing houses receives a control signal composed of a high-frequency carrier wave superimposed on a power line and controls the load of electrical equipment connected to it via a wall switch. There are some that are equipped with.

This configuration is shown in FIG.

In the diagram, 1 is a commercial power line for a general household (hereinafter referred to as the power line)
In addition to supplying power, it is also used as a transmission path for control signals made up of carrier waves. Reference numeral 2 is a push-off switch connected to the power line 1, whose contacts open only when it is pressed and close when it is released, and is attached to the wall of the room.

3 is a load such as a lighting fixture, which is operated by receiving power from the power line 1. 4 is a control terminal device connected to the power line 1 via the push-off switch 2, which controls the load 3 on and off according to the control signal from the controller 6;
The load 3 can also be controlled on and off by operating the push-off switch 2. In order to control the load 3 by operating the push-off switch 2, the control terminal 4 has switching contacts therein for inverting and controlling the load 3 that is switched by operating the push-off switch 2. Reference numeral 6 denotes a controller connected to the power line 1, which controls the load 3 on and off by transmitting the load control command signal (114) from the carrier wave to the control terminal 4 via the power line 1 and the push-off switch 2. It has the function of

The operation of the power line transport control system configured as described above will be described below. When a transmission request to turn on the load 3 is issued to the controller 6, the controller 6 transmits a turn-on control command signal for the load 3, which is composed of a carrier wave, to the control terminal 4 on the power line 1. This ON control command signal is transmitted to the control terminal 4 via the power line 1 and the contact of the push-off switch 2. The control terminal device 4 that has received this command turns on the load 3 according to this control command. This series of operations is similarly performed when a transmission request to turn off the load 3 is issued to the controller 6.

Next, the operation of the control terminal 4 when the push-off switch 2, which is a wall switch, is operated will be explained. The wall switch is originally operated when it is desired to reversely control the load 3 from its current state, that is, when it is desired to turn off the load 3 if it is currently on, or to turn it on if it is currently off. Therefore, when the push-off switch 2 is operated, that is, when the power supply to itself is stopped, the control terminal 4 operates to perform on/off inversion control of the load 3. Note that the reason why the wall switch is a push-off switch is to ensure the power supply for the control terminal 4, and the control terminal 4 is always turned off when the wall switch is not being operated.
This is to keep the power on. In addition, while the push-off switch 2, which is a wall switch, is operated, the control terminal 4 is not energized from the power line 1, but during this period, the control terminal 4 has a built-in backup circuit that does not Power for operation of the control terminal device 4 is secured.

Problems to be Solved by the Invention However, the above configuration has the following problems.

The first problem is a problem with the configuration of the control terminal 4, which distinguishes between a power outage due to the operation of the wall switch 2 and a streetcar outage due to a momentary interruption or power outage in the power line 1. This means that it cannot be done. In other words, in the same way as when the wall switch 2 is operated, the load 3 is reversely controlled when a momentary interruption or power outage occurs. This is extremely dangerous if the load 3 is a device that generates heat, as it may lead to a fire or the like.

The second problem is that the control command signal from the controller 6 does not reach the control terminal 4 while the wall switch 2 is being operated. This means that if multiple users use this system at the same time, the person who operates the wall switch 2 will have priority processing, but as the person operating the controller 6, his command will be It means that you have been ignored, and that is not a fun feeling.

The present invention solves these problems, and it is possible to distinguish between a power outage due to the operation of a wall switch and a power outage due to a momentary interruption or power outage that occurs in the power line, and when the wall switch is operated, the load Controls the current state of the load in reverse, maintains the current state of the load in the event of a momentary interruption or power outage, and receives load control command signals from the controller even while the wall switch is being operated. The purpose of the present invention is to provide a power line transport control device that can perform the following functions.

Means for Solving the Problems To achieve this object, the power line control device of the present invention includes a first
The output signals of the voltage detecting means of the power line, the carrier wave transmitting means for transmitting a carrier wave onto the power line, and the first voltage drop detecting means are input, and when the voltage drop period of the power line exceeds a set value, the carrier wave transmitting means is driven to output the carrier wave. A switch circuit consisting of a terminal device having a determination control means for sending out a signal, a push-off switch that opens only when it is operated, and a capacitor for bypassing the carrier wave connected in parallel between the contacts, and this switch circuit connected in series. connected to the power line through
a second voltage detection means for detecting a voltage drop on the power line; a carrier wave reception means for receiving a carrier wave on the power line; a load control means for controlling a load connected to the power line; a carrier wave reception means; and a second voltage detection means. A load configured by a carrier wave sent out on a power line with an output signal as an input; when receiving an l+i control command signal, drives the load control means to control the load according to this control command, and a second voltage The detection means 2 detects a voltage drop in the power line, and when it is detected from the output of the carrier wave reception means that the carrier wave is not continuously received during the detection period of this voltage drop, the load state is changed. The configuration includes a control terminal device having an arithmetic control means for controlling the control means.

Effect With the above configuration, it is possible to distinguish between a momentary interruption or power outage that occurs in the power line and a energization stop due to the operation of a push-off switch, and in the case of energization stoppage due to a momentary interruption or power outage, the load status is not changed, In the case of power discontinuation due to push-off switch operation, the load state is reversed from the current state, and even while the push-off switch is operated, control commands can be received from the controller using carrier waves. This makes it a good power line carrier control device.

Embodiment Hereinafter, an embodiment of the power line control device of the present invention will be described with reference to the drawings.

FIG. 1g1 is a block diagram showing an embodiment of the present invention.

In the figure, 6 is a power line, which supplies commercial power and is also used as a carrier wave transmission path. 7 is a terminal device,
A first voltage detection means 8 that compares the voltage of the power line 6 with a set value and detects a momentary interruption or power outage that occurs in the power line 6 as a voltage drop in the power line 6, and a detection result of the first voltage detection means 8. The set value is the period of the voltage drop detected by the carrier wave sending means 9 that sends out a carrier wave onto the power line 6 when the determination control means 1o operates, and the first voltage drop detecting means 8.

and a determination control means 10 that drives the carrier wave sending means 9 to send out a carrier wave when the carrier wave exceeds the threshold value. 11 includes a push-off switch 12 that opens a circuit while the switch is operated and closes the circuit when the switch is released, and a capacitor 13 that is connected in parallel between the contacts of this push-off switch 12 and bypasses the carrier wave. It is a switch circuit. Reference numeral 14 denotes a load such as a lighting device, which is activated by power supply from the power line 6 and stops operating when the power supply is stopped. 16
is a control terminal device, which includes a load control means 16 for switching whether or not to supply power to the load 14, a carrier wave reception means 17 for receiving a carrier wave on the power line e, and a second voltage detection means for detecting a voltage drop on the power line 6. 18 and calculation control means 19. This arithmetic control means 19 operates with the outputs of the carrier wave receiving means 17 and the second voltage detecting means 18 as input, and the second
When the voltage detecting means 18 detects a voltage drop in the electric power lll6, the load controlling means 16 is controlled so as not to change the state of the load 14 when the carrier wave receiving means 17 is continuously detecting carrier waves during this detection period. Similarly, when the carrier wave receiving means 17 is receiving intermittent carrier waves while detecting a voltage drop, the load 1lIIJ control means 1 is controlled so as to reversely control the load 14 from the current state.
6 is +1ilJ controlled.

Next, with reference to FIG. 2, a load control command composed of carrier waves and a carrier wave sent out by the carrier wave sending means 9 of the terminal device 7 will be explained. In the figure, 20 indicates the commercial frequency voltage of the power line 6, and 21, 22, and 23 indicate carrier waves superimposed on this commercial voltage, respectively. Naturally, the horizontal axis represents time and the vertical axis represents the magnitude of voltage V. load 1
The control command for 4 is expressed as a combination of the superimposed phase of the carrier wave on the commercial voltage.If the superimposed phase is in the first half T1 of the peak of the commercial voltage, it is 1'', and if it is in the latter half T2, it is '0'', and this signal A load control command is constructed by combining a plurality of these. In other words, in this embodiment, the carrier wave 21
represents 1″, and the carrier wave 22 represents “o”.
This load control command is sent from a controller (not shown). Further, a carrier wave 23 indicates a carrier wave sent out by the carrier wave sending means 9 of the terminal device 7. In the case of this figure, the voltage set in the first voltage detection means 8 of the terminal device 7 is 1v11, and the voltage drop period set in the determination control means 10 is 0.

That is, the first voltage detection means 8 always monitors the commercial voltage of the power line 6, and the instantaneous value of this commercial voltage is 1v, 1v,
When the following is reached, a signal is sent to the determination control means 10,
The determination control means 10 activates the carrier wave sending means 9 after 0 seconds and continues sending out the carrier wave 23 until the instantaneous value of the commercial voltage of the power line 6 exceeds 1v11. In FIG. 2, since no abnormalities such as instantaneous interruptions or power outages have occurred in the commercial voltage of the power line 6, this carrier wave 23 intermittently generates power fj! every half cycle of the commercial frequency. It is sent to e.

Next, the operation of the power line transfer control device having the configuration shown in FIG. 1 will be explained.

A control command for the load 14 is generated in a controller (not shown), and the load control command configured by a carrier wave is transmitted to the power line 6.
Suppose that it is sent to the top. Then, the carrier wave receiving means 17 of the control terminal device 16 receives this carrier wave, and the arithmetic control means 19
decodes this control command and drives the load control means 16 to control the load 14 in accordance with this control command. In this way, the load 14 is controlled according to the control commands issued to the controller.

Next, a case where the push-off switch 12 is operated will be explained. When the push-off switch 12 is operated, the operating power of the control terminal 16 is secured by the backup circuit built in the control terminal 16, and the second voltage detection means 18 detects the power line 6 due to the operation of the push-off switch 12. detects the voltage drop and inputs this information to the arithmetic control means 19. At this time, since there is no momentary interruption or power outage in the power line 6, the carrier wave sending means 9 of the terminal device 7 intermittently generates a carrier wave every half cycle of the commercial frequency as explained in FIG. 2 above. There is. This carrier wave is sent from the power line 6 via the capacitor 13 to the carrier wave receiving means 17 of the control terminal device 16. The carrier wave receiving means 17 inputs this received signal to the calculation control means 19. When the push-off switch 12 is operated in this way, the control terminal 15
At the same time, the second voltage detection means 18 detects a voltage drop in the power line 6 due to the operation of the push-off switch 12, and at the same time, the carrier wave reception means 17 receives an intermittent carrier wave (i).
I will do it. Then, the arithmetic control means 19 identifies that the push-off switch 12 has been operated, and drives the load control means 16 to reversely control the load 14 from its current state.

Next, a case where a momentary interruption or power outage occurs in the power line 6 will be explained. In this case, terminal device 7. The control terminal 16 has a built-in backup circuit, so the first terminal of the terminal 7
The voltage detecting means 8 of the control terminal 16 and the second voltage detecting means 18 of the control terminal 16 both detect a voltage drop in the power line 6. Since the setting time of the determination control means 10 of the terminal device 7 is 0 seconds, the first voltage detection means 8 detects that the voltage of the power line 6 is 1V.
The carrier wave sending means 9 is driven from the moment when it is detected that the voltage has become 1 or less, and continues to send out carrier waves continuously for 40 hours until the voltage of the power 1iI6 exceeds 1v11, that is, until the instantaneous interruption or power outage is recovered. . This carrier wave is received by the carrier wave receiving means 17 of the control terminal device 16 via the power line 6. In other words, in the event of a momentary interruption or power outage, the control terminal 16
The second voltage detection means detects a voltage drop, and at the same time, the carrier wave receiver stage 17 receives continuous carrier waves. Then, the arithmetic control means 19 identifies a momentary interruption or a power outage, and drives the load control means 16 so that the load 14 maintains its current state. In other words, no signal is sent to the load control means 16.

Further, a case where a plurality of operators operate the controller and the push-off switch 12 at the same time will be described below. At this time, the carrier wave receiving means 17 of the control terminal device 16 receives both the carrier wave signal sent from the controller and the carrier wave sent from the carrier wave sending means of the terminal device 7 every half cycle of the commercial frequency. This carrier wave sent every half cycle of the commercial frequency is sent out by the carrier wave sending means 9 at the moment when the first voltage detecting means 8 detects that the commercial voltage of the power line 6 reaches 1v11. Further, since the set value of the second voltage detecting means 18 of the control terminal device 16 is also 1v, 1 similar to the set value of the first voltage detecting means 8, the arithmetic control means 19 can detect the voltage transmitted by the carrier wave transmitting means 9. Carrier waves can be recognized. Therefore, the arithmetic control means 19 measures how much the carrier wave sent from the controller deviates from the position of the carrier wave that the carrier wave sending means 9 sends out every half cycle of the commercial frequency.
0" or "1". In this way, even if a load control command is issued from the controller while the pussy off switch 12 is being operated, the control terminal 16 will not accept this load control command. It is something that can be received and deciphered.

FIG. 3 shows a configuration diagram when the power line transfer control device of the present invention is implemented as a system for existing houses. This configuration and operation are as described above, and will be omitted here.

Effects of the Invention As described above, the power line control device of the present invention can distinguish between the operation of a wall switch and a momentary interruption or power outage that occurs in the power line, and when the wall switch is operated, the power line control device of the present invention can reversely control the load from its current state. However, it does not change the load status in the event of a momentary power outage or power outage, and is extremely easy to use as it can receive signals composed of carrier waves even while the wall switch is being operated. It is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the power line carrier control device of the present invention, and FIG. 2 is an explanation showing an example of data definition of a load control command signal composed of carrier waves and an example of carrier wave output of a terminal device in the same embodiment. 3 is a block diagram of a power line transfer control system for an existing house constructed using the same power line transfer control device, and FIG. 4 is a block diagram of a conventional power line transfer control system for an existing house. 6... Power line, 7... Terminal, 8...
. . . First voltage detection means, 9 . . . Carrier wave sending means, 10 . . . Determination control means, 11 . .
... Switch circuit, 12 ... Push-off switch, border, 13 ... Capacitor, 14 ...
・Load, 16... Control terminal, 16...
・Load control means, 17... Carrier wave receiving means, 1
8...Second voltage detection means, 19...
Arithmetic control means.

Claims (1)

[Claims] A first voltage detecting means connected to a power line and detecting a voltage drop on the power line, a carrier wave sending means sending a carrier wave onto the power line, and an output signal of the first voltage detecting means as input, and a voltage drop period on the power line. a terminal device having a determination control means for driving the carrier wave sending means to send out a carrier wave when a switch circuit consisting of a capacitor that bypasses the carrier wave connected to the power line; a second voltage detection means that is connected to the power line through the switch circuit in series and detects a voltage drop on the power line; and a second voltage detection means that receives the carrier wave on the power line. A carrier wave receiving means, a load control means for controlling a load connected to the power line, a load control command configured by a carrier wave sent out onto the power line, with output signals of the carrier wave receiving means and the second voltage detecting means as inputs. When the signal is received, the load control means is driven to control the load according to this control command, and the second voltage detection means detects a voltage drop in the power line, and the carrier wave continues during the detection period of this voltage drop. a power line carrier control device comprising: a control terminal device having arithmetic control means for controlling the load control means to change the state of the load when it is detected from the output of the carrier wave reception means that the carrier wave is not received;