Dc track lighting systems control
AssigneePhilips Lighting Holding B.V.
InventorAlan James DAVIE
Life of this patent
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Abstract
This invention generally relates to control of DC track lighting systems. The proposed solution implements a control system for a DC track lighting system based on the use of near-field RF technologies such as NFC. This solution is achieved by extending the limited range offered by near-field RF technologies by taking advantage of the unexpected behaviour of a DC track while having thereon high frequency signals such as near-field RF signals. The proposed solution may require less tedious control of DC track lighting system since lamp holder(s) may be controlled based on a single “touch” of near-field RF enable device.
Claims17
A control system comprising a track lighting system powered by a DC power source, the track lighting system comprising at least one elongated conducting track extending from a first end to a second end for supplying a DC supply voltage component of the DC power source to at least one lamp holder adapted to be attached to the track, the control system comprising:
- a combining unit configured to:
- combine the DC supply voltage component and, at least, a received near-field radio frequency, RF, signal, thereby producing a combined signal, the near-field RF signal comprising at least one control command;
- and,
- transmit the combined signal at the first end of the track, so as to inductively control the operation of the at least one lamp holder based on the control command.
A method of controlling a track lighting system powered by a DC power source, the track lighting system comprising at least one elongated conducting track extending from a first end to a second end for supplying a DC supply voltage component of the DC power source to at least one lamp holder adapted to be attached to the track, the method comprising:
- combining the DC supply voltage component and, at least, a received near-field radio frequency, RF, signal, thereby producing a combined signal, the near-field RF signal comprising at least one control command;
- transmitting the combined signal at the first end of the track, so as to inductively control the operation of the at least one lamp holder based on the control command.
A track lighting system powered by a DC power source, the track lighting system comprising:
- at least one elongated conducting track extending from a first end to a second end for supplying a DC supply voltage component of the DC power source to at least one lamp holder adapted to be attached to the track;
- and
- a control system comprising a combining unit configured to:
- combine the DC supply voltage component and, at least, a received near-field radio frequency, RF, signal, thereby producing a combined signal, the near-field RF signal comprising at least one control command;
- and,
- transmit the combined signal at the first end of the track, so as to inductively control the operation of the at least one lamp holder based on the control command.
Dependencies are inferred from the claim text.