Single wire lighting driver control
AssigneeShafrir Romano
InventorsDror MANOR, Shafrir Romano
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Abstract
In embodiments of the present invention, there is provided a lighting control device connected in series with an AC supply line of a lighting driver at a control access point, wherein the lighting control device comprises an AC/DC converter configured to receive an input AC voltage from the AC supply line and to convert it to an output DC voltage. The lighting control device further comprises a lighting control circuit configured to use the output DC voltage as a power supply and to transmit control information to the driving unit.
Claims22
A lighting control device comprising:
- an input stage connected along an AC supply line of a lighting driver, said input stage being configured to convert an input current of the lighting driver flowing through the AC supply line to a substantially small AC voltage;
- an AC/DC converter coupled to receive said substantially small AC voltage as an input AC voltage and to convert it to an output DC voltage;
- and
- a lighting control circuit coupled to receive said output DC voltage as a power source and configured to transmit control information to the lighting driver.
A method of controlling a lighting driver, comprising the steps of:
- connecting a lighting control device along an AC supply line of the lighting driver, said lighting control device comprising an input stage, an AC/DC converter and a lighting control circuit;
- converting an input current of the lighting driver flowing through the AC supply line to an input voltage to the AC/DC converter;
- converting said input voltage to an output DC voltage by said AC/DC converter;
- using said output DC voltage for supplying power to a lighting control circuit;
- and
- transmitting control information to the lighting driver from said lighting control circuit.
Dependencies are inferred from the claim text.