JPS62126837A - Lamp line carrier-current control system with service restoration indicator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a power outage recovery display suitable for informing a user of the effect on home appliances during a power outage after the power outage is restored in a power line transportation control system. It is.

[Background of the invention]

If a power outage occurs during control using the power line conveyance control system, the load will be temporarily reduced to 1 when the power is restored. It is necessary to disconnect the power from the power supply, and then resume energization after the user has confirmed that it is safe.

For this reason, the power line transport control system is usually configured so that the load is disconnected from the power source and placed in a standby state when the power is restored.

However, if a power outage or restoration occurs while the user is away, for example, if the user is controlling the woodblock printing machine while the user is away, there is a possibility that the power will be cut off in the middle of woodblock printing.
In this case, even if you open the lid of the woodblock printing machine and notice that the woodblock has failed, you cannot easily tell whether this is due to a failure of the woodblock machine or a power outage.

In this way, with conventional power line conveyance control systems, if there is a device that is being operated while you are out, there is a possibility that the operation is not working properly, or if an abnormal termination is found, it takes time to investigate the cause. , ``Measures against these problems were delayed.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a power line transport control system that, when a power outage occurs during continuous use of the system, displays some kind of display upon restoration to facilitate subsequent countermeasures.

[Summary of the invention]

That is, the present invention provides a power line carrier control system that transmits a control signal to a power line using a high-frequency carrier frequency.
1st pressure inspection section that detects restoration of power outage and this voltage inspection
The power line transport system is equipped with a power outage recovery display device that has a drive circuit that issues a drive signal based on a detection signal from the power supply, and a power outage recovery display circuit that operates based on the drive signal from this drive circuit, making it easy to confirm that power has been restored. It provides a control system.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 6. First, the outline of the electric light and transport control system will be explained with reference to FIG.

2 is an electric light line connected to the commercial power supply 1, and this electric light gland 2
A master unit 3 and a slave unit 4 are connected to the terminal.

In other words, a high frequency signal is transmitted between the base unit 3 and the slave unit 4.

By being superimposed on the commercial power supply, information is exchanged with each other, and, for example, the relay contacts 6 in the handset 4 are opened and closed, and the load 5 connected to the handset 4 is controlled to be turned on and off.

Now, next is the power failure recovery display screen to be incorporated into base unit 3.

An outline of the installation will be explained with reference to FIG. Reference numeral 7 denotes a voltage drop section, which drops, for example, a commercial voltage of 100 V.AC to 12-'.AC. 8 is the aftermath rectifier, for example +2V-DC
is obtained. 9 is a voltage detection unit that indirectly monitors the state of the commercial power supply by inputting the output voltage of the full-wave rectifier 8; Detects the rising edge and issues a detection signal. A drive circuit 10 receives a detection signal from the voltage detection section 9 and generates a drive signal for driving the power failure recovery display circuit 11. 12 is a three-terminal regulator for obtaining a control power source for controlling each circuit, for example, 5V-DC.

If such a configuration is adopted, when the commercial power supply 1 experiences a power outage and is restored after the power outage, the output of the full-wave rectifier 8 will be reduced.

The voltage detection section 9 can detect an increase in the power voltage.

Therefore, based on the detection signal of the voltage detection unit 9, the old display circuit 11 can display a power failure recovery display after a power failure via the drive circuit 10.

In this way, according to the base unit 3 equipped with the power outage recovery display device, it is possible to easily determine whether there is a power outage while the user is out when returning home, and if it is displayed that a power outage has occurred, It is possible to smoothly move on to countermeasures such as checking each control load or redoing control. In addition, by ensuring such a display on the main unit 3, it is possible to smoothly proceed with inspections of loads that were not directly controlled, such as checking the cold food in the refrigerator or the condition of the fish in the aquarium. can.

Next, a more specific configuration of the main parts of the embodiment will be explained with reference to FIG. 13 is a DC power supply that equivalently represents the DC output voltage of the full-wave rectifier 8; 17 is a thyristor that constitutes the drive circuit 10; its gate G is connected to a capacitor 16 and a resistor 14 that constitute the voltage detection unit 9; .15 Furthermore, 111 gate circuits each consisting of a diode 20 are connected. 18
is a light emitting diode constituting the power failure recovery display circuit 11 and is connected to the anode A of the thyristor 17. Also, 1
9 is a reset switch connected to the cathode K of the thyristor 17.

Now, the operation of the embodiment configured as described above will be explained. When the power is restored after a power outage occurs, the DC voltage of the DC power supply 16 increases rapidly. Therefore, the gate G of the thyristor 17 is connected to the capacitor 16. A trigger signal shaped by a time constant determined by the resistors 14 and 15 is input, and the thyristor 17 is turned on. Therefore, the light emitting diode 18 connected thereto lights up, indicating that the commercial power source 1 has been restored after the power outage. This light emitting diode 18
After confirming that the light is lit, press the reset switch 19.
The thyristor 17 is disconnected from the operating power source and turns off, and the light emitting diode 18 continues to turn off until the power is restored again.

In this embodiment, the light emitting diode 18 was selected as the display element for power recovery, but it is also possible to combine it with other lamps, a liquid crystal cell, a buzzer, etc. Further, in order to stabilize the operation at the time of recovery, it is desirable to use a thyristor 17° light emitting diode 18 or the like as an operating power source (for example, 5V-DC) l:t battery back amplifier.

Next, another embodiment shown in FIG. 4 will be described. In this embodiment, a one-chip microcomputer 200 incorporated in the main unit 3 constitutes a power failure recovery display device. That is, in this embodiment, the reset start function of the one-chip microcomputer 200 is utilized to control the display device. For example, such a one-chip microcomputer 200 has a glue set terminal 23 with a length of at least 20 m5. When held at W level and returned to High level, initialization progera A starting from the reset start address is executed.

Therefore, by incorporating a program for power failure recovery display as shown in FIG. 5 into the initialization program in advance, the display device can be controlled. That is, when the power failure recovery display program is executed, the A2 terminal of the 1-chip microcomputer 200 goes to Lo.
It is controlled to the W state and turns on the transistor connected to it. Therefore, the light emitting diode 18 connected to the transistor lights up in bulk, indicating that there has been a power outage/recovery. After this, the 1-chip microcomputer 200 becomes in a state where the A5 terminal is operated manually. That is, when the reset switch 19 is pressed and the As terminal becomes Low, the 1-chip microcomputer 200 executes the next step and
Switch the 2# child from the Low state to the Hsh state. As a result, the transistor connected to the A2 terminal is turned off, and the light emitting diode 18 is turned off. In this way, the reset terminal 23 of the 1-chip microcomputer 200 is set to Low when the power is restored.
By connecting a gate circuit that changes from the state to the Highk state, it is also possible to configure a power failure recovery display device using each input/output terminal of the one-chip microcomputer 200.

In addition, due to battery back amplifier etc., even during power outage,
If the operation of a one-chip microcomputer is to be guaranteed, a power failure recovery display circuit may be provided separately, and the power failure recovery display program may be operated by its output.

In the above description, the power failure recovery display device is incorporated into the main unit, but it can also be incorporated into the slave unit.

〔Effect of the invention〕

As is clear from the above description, the present invention provides a power line transmission control system that transmits control signals to power lines using a high-frequency carrier frequency, including a voltage detection section that detects restoration of a power outage, and a voltage detection section that detects restoration of a power outage. According to the present invention, there is provided a power line conveyance control system equipped with a power failure recovery display device having a drive circuit that issues a drive signal based on a detection signal, and a power failure recovery display circuit that operates based on the drive signal of the drive circuit. This can be known at the time of power outage restoration, and subsequent countermeasures can be easily taken.

[Brief explanation of drawings]

FIG. 1 is a block diagram for explaining the main parts of one embodiment of the present invention, FIG. 2 is a schematic diagram for explaining a power line conveyance control system, and FIG. 3 is a concrete configuration of the embodiment. A circuit diagram for explaining FIG. 4 is a circuit diagram for explaining the configuration of another embodiment 1, and FIG. 5 is a 70-chart for explaining the operation of the embodiment shown in FIG. 9... Voltage detection unit, 10... Drive circuit, 11... Power failure recovery display circuit. Representative Patent Attorney Katsutoshi Ogawa Figure 1ゝ゛-10 Figure 5

Claims (1)

[Claims] A power line carrier control system that transmits control signals to power lines using a high-frequency carrier frequency includes a voltage detection section that detects recovery from a power outage, a drive circuit that issues a drive signal based on the detection signal of this voltage detection section, and a drive circuit that issues a drive signal based on the detection signal of this voltage detection section. A power line conveyance control system equipped with a power failure recovery display device having a power failure recovery display circuit that operates based on a circuit drive signal.