LED lighting systems
Light fixture systems and application of ambient light measurement for improving lighting system efficiency.
1. A method for controlling light emitting diode (LED) light fixtures, the method comprising:
monitoring a clock source signal to identify the presence of a feature in the clock source signal;
generating a trigger signal with a triggering module in response to identifying the presence of the feature in the clock source signal;
providing the trigger signal to each of a plurality of light fixtures to command
each of the plurality of light fixtures to stop outputting light; and
measuring ambient light with a light sensor located with the plurality of light fixtures;
wherein the clock source signal is a power line communication signal carried by an AC or DC signal used to provide power to the plurality of light fixtures.
2. The method of claim 1 , wherein the triggering commands each of the plurality of light fixtures to stop outputting light for a predefined time period.
3. The method of claim 1 , wherein an ambient light monitor measures the ambient light in response to the trigger signal.
4. The method of claim 1 , wherein the ambient light is measured using one or more light emitting diodes in the one or more of the plurality of light fixtures.
5. The method of claim 1 , comprising varying operating parameters of one or more of the light fixtures based on the measured ambient light.
6. A light fixture control system, the system comprising:
a monitoring module that monitors a clock source signal to identify the presence of a feature in the clock source signal;
a triggering module that generates a trigger signal in response to identifying the presence of the feature in the clock source signal;
a command module that provides the trigger signal to each of a plurality of light fixtures to command each of the plurality of light fixtures to stop outputting light; and
a ambient light module that monitors ambient light measured in proximity to the plurality of light fixtures;
wherein the clock source signal is a power line communication signal carried by an AC or DC signal used to provide power to the plurality of light fixtures.
7. The system of claim 6 , wherein the command module commands each of the plurality of light fixtures to stop outputting light for a predefined time period.
8. The system of claim 6 , wherein the ambient light module measures the ambient light in response to the trigger signal.
9. The system of claim 6 , wherein the ambient light is measured using one or more light emitting diodes in the one or more of the plurality of light fixtures.
10. The system of claim 6 , wherein a light fixture control module varies operating parameters of one or more of the light fixtures based on the measured ambient light.