Digital load control system providing power and communication via existing power wiring
First Claim
1. A method for a load control system comprising:
- receiving, via a power device, power from an AC power source via a power wiring;
producing, via a controller, a phase-control voltage that is adapted to be received by the power device via the power wiring, the controller adapted to be coupled in series electrical connection on the power wiring between the AC power source and the power device;
transmitting, via the controller, a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage;
transmitting, via the power device, a reverse digital message to the controller via the power wiring, the reverse digital message being split up into two or more packets; and
transmitting, via the controller, a continuation pattern between the packets of the reverse digital message.
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Accused Products
Abstract
A two-way load control system comprises a power device, such as a load control device for controlling an electrical load receiving power from an AC power source, and a controller adapted to be coupled in series between the source and the power device. The load control system may be installed without requiring any additional wires to be run, and is easily configured without the need for a computer or an advanced commissioning procedure. The power device receives both power and communication over two wires. The controller generates a phase-control voltage and transmits a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage. The power device transmits a reverse digital message to the controller via the power wiring.
68 Citations
22 Claims
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1. A method for a load control system comprising:
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receiving, via a power device, power from an AC power source via a power wiring; producing, via a controller, a phase-control voltage that is adapted to be received by the power device via the power wiring, the controller adapted to be coupled in series electrical connection on the power wiring between the AC power source and the power device; transmitting, via the controller, a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage; transmitting, via the power device, a reverse digital message to the controller via the power wiring, the reverse digital message being split up into two or more packets; and transmitting, via the controller, a continuation pattern between the packets of the reverse digital message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling power delivered from an AC power source to an electrical load by a controller, the controller comprising a controllably conductive device adapted to be coupled in series electrical connection on a power wiring between the AC power source and a power device, the method comprises:
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generating a phase-control voltage on the power wiring by rendering the controllably conductive device conductive each half-cycle of the AC power source; transmitting a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage; receiving a reverse digital message from the power device via the power wiring, the reverse digital message being split up into two or more packets; and transmitting a continuation pattern between the packets of the reverse digital message. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for controlling power delivered from an AC power source to an electrical load in response to a controller that is coupled in series electrical connection between the AC power source and a power device, the method comprising:
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receiving a phase-control voltage from the controller via a power wiring; receiving a forward digital message from the controller in response to digital information encoded in timing edges of the phase-control voltage; transmitting a reverse digital message to the controller via the power wiring, the reverse digital message being split up into two or more packets; and receiving a continuation pattern between the packets of the reverse digital message. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification