Control system for suppling power by power line communication

• US 20040239520A1
• Filed: 07/15/2003
• Published: 12/02/2004
• Est. Priority Date: 11/22/2001
• Status: Active Grant

• Current Assignee: DOO WON Company Limited
• Original Assignee: DOO WON Company Limited
• Inventors: Seo, Moon-Soo
• Granted Patent: US 7,009,527 B2
• Time in Patent Office: Days
• US Class Current: 340/825.71
• CPC Class Codes: H02J 13/00009 using pulsed signals
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 40/121 using the power network as support for the transmission

Abstract

The power supply control system using PLC includes a repeater for recognizing a remote control signal transmitted by a remote control signal transmitter and an ID number of a corresponding electronic equipment to remote control signal transmitter and an ID number of a corresponding electronic equipment to remotely turn on/off at least one of many electronic equipments, a power line signal transmitter for converting the ID number and the remote control signal into a data signal and interfacing with a power line signal of AC power to transmit the data signal, a power line signal controller having a PLC unit for isolating the data signal from the power line signal of AC power and converting the data signal into a digital signal, and a relay integrated with the controller in the electronic equipment to control a power source toward the electronic equipment by connecting/disconnecting a power source terminal to/from a load terminal by control of the controller and connected to the PLC unit.

Claims

1. A power supply control system using power line communication, comprising:

a repeater means for recognizing a remote control signal transmitted by a predetermined remote control signal transmitting means and an ID number of an electronic equipment corresponding to the remote control signal in order to remotely turn on/off at least one electronic equipment selected among a plurality of, electronic equipments;

a power line signal transmitting means for converting the ID number of the electronic equipment and the remote control signal recognized by the repeater means into a predetermined data signal, and interfacing with a power line signal of AC power to transmit the converted data signal;

a power line signal controller having a PLC (Power Line Communication) unit for isolating the data signal transmitted by the power line signal transmitting means from the power line signal of AC power, and converting the data signal into a digital signal; and

a relay means integrated with the power line signal controller and included in the electronic equipment so as to control a power source supplied to the electronic equipment by connecting or disconnecting a power source terminal to/from a load terminal under the control of the power line signal controller, the relay means being connected to the PLC unit through a contactor.

2. A power supply control system using power line communication according to claim 1,

wherein, the power line signal controller is detachably combined to the relay means by male—

female engagement.

3. A power supply control system using power line communication according to claim 1,

wherein the power line signal controller further includes a driving unit for filtering and rectifying the AC power supplied through the power line and then supplying constant voltages of 5V and 24V to tile PLC unit and the relay means respectively in order to drive the PLC unit and the relay means.

4. A power supply control system using power line communication according to claim 1, wherein the driving unit includes:

a filter for dropping the AC power applied from the power line to a constant voltage corresponding to a driving power of the PLC unit and the relay means;

a rectifier for rectifying the dropped voltage to be output in a DC power; and

a regulator for supplying driving powers of 5V and 24V to the PLC unit and the relay means by outputting the DC power rectified by the rectifier as a DC signal approximate to a sine wave.

5. A power supply control system using power line communication according to claim 1, wherein the PLC unit includes:

a Low Pass Filter (LPF) for filtering the data signal from the power line signal of AC power interfaced with the data signal transmitted from the power line signal transmitting means;

an amplifier for amplifying the signal filtered by the LPF;

an A/D converter for coding the analog signal amplified by the amplifier into a digital signal;

a microprocessor for analyzing the ID number of the electronic equipment and the control data signal coded by the A/D converter;

a buffer for configuring a data path so as to output the m number and the control data signal analyzed by the microprocessor; and

a driver for providing the ID number and the control data signal buffered by the buffer as an on/off pulse signal so that the power source terminal and the load terminal of the relay means are selectively connected or disconnected.

6. A power supply control system using power line communication according to claim 1, wherein the relay means includes:

a bobbin coil having an open circuit coil for applying a predetermined current upward and a loop circuit coil for applying a predetermined current downward according to the on/off pulse signal provided from the driver of, the PLC unit, the bobbin coil being spirally wound so that the open circuit coil and the loop circuit coil give electromagnetic forces to opposite directions by the current selectively applied;

a bar-shaped mover inserted into the bobbin coil to be movable vertically by the electromagnetic force applied to the bobbin coil; and

an amateur installed to the mover so as to connect or disconnect the power source terminal to/from the load terminal by the movement of the mover.

7. A power supply control system using power line communication according to claim 6,

wherein the relay means further includes a pilot unit selectively contacted with the mover by the movement of the mover so as to display a connection/disconnection state of the power source terminal and the load terminal to outside.

8. A power supply control system using power line communication according to claim 7, wherein, the pilot unit includes:

a fixed pilot contactor installed on a path of the mover; and

a movable pilot contactor installed to the mover in correspondence to the amateur so as to selectively contact with the fixed pilot contactor according to the movement of the mover.

9. A power supply control system using power line communication according to claim 3, wherein the driving unit includes:

a filter for dropping the AC power applied from the power line to a constant voltage corresponding to a driving power of the PLC unit and the relay means;

a rectifier for rectifying the dropped voltage to be output in a DC power; and

a regulator for supplying driving powers of 5V and 24V to the PLC unit and the relay means by outputting the DC power rectified by the rectifier as a DC signal approximate to a sine wave.

10. A power supply control system using power line communication according to claim 5, wherein the relay means includes:

a bobbin coil having an open circuit coil for applying a predetermined current upward and a loop circuit coil for applying a predetermined current downward according to the on/off pulse signal provided from the driver of, the PLC unit, the bobbin coil being spirally wound so that the open circuit coil and the loop circuit coil give electromagnetic forces to opposite directions by the current selectively applied;

a bar-shaped mover inserted into the bobbin coil to be movable vertically by the electromagnetic force applied to the bobbin coil; and

an amateur installed to the mover so as to connect or disconnect the power source terminal to/from the load terminal by the movement of the mover.

11. A power supply control system using power line communication according to claim 10,

wherein the relay means further includes a pilot unit selectively contacted with the mover by the movement of the mover so as to display a connection/disconnection state of the power source terminal and the load terminal to outside.

12. A power supply control system using power line communication according to claim 11, wherein, the pilot unit includes:

a fixed pilot contactor installed on a path of the mover; and

a movable pilot contactor installed to the mover in correspondence to the amateur so as to selectively contact with the fixed pilot contactor according to the movement of the mover.