Calibration of a load control device for a light-emitting diode light source

1. A system to control power delivery to an electric load device, the system comprising:

calibration device circuitry disposed at the electric load device, the calibration device circuitry including:

sense circuitry to measure, at a first periodic interval, a load voltage at the electric load device; and

calibration device control circuitry communicatively coupled to the sense circuitry, the calibration device control circuitry to:

determine whether the measured load voltage is less than a stored threshold voltage value; and

responsive to a determination that the measured load voltage is less than the stored threshold voltage value, generate a load voltage output signal at a second periodic interval;

power supply circuitry to provide a source voltage output, the power supply circuitry including:

load regulation circuitry to adjust the source voltage provided by the power supply circuitry; and

system control circuitry communicatively coupled to the calibration device circuitry and to the power supply circuitry, the system control circuitry to:

responsive to receipt of the load voltage output signal at the second periodic interval, generate at a third periodic interval, a source voltage control signal, the source voltage control signal to cause an incremental change, at the third periodic interval, in the source voltage; and

responsive to a failure to receive the load voltage output signal at the second periodic interval, cease generation of the source voltage control signal.

2. The system of claim 1 wherein the first periodic interval and the second periodic interval are equal.

3. The system of claim 1 wherein the second periodic interval is shorter in duration than the third periodic interval.

4. The system of claim 1 wherein the load voltage output signal comprises a current spike on power wiring delivering the output voltage to the electric load device.

5. The system of claim 1 :

wherein the calibration device further comprises wireless communication interface circuitry; and

wherein the load voltage output signal comprises a wireless signal communicated to the system control circuitry.

6. The system of claim 1 :

wherein the calibration device further comprises power line communication interface circuitry; and

wherein the load voltage output signal comprises a signal communicated to the system control circuitry via power wiring conductively coupling the power supply circuitry to the electric load device.

7. The system of claim 1 , wherein the load voltage output signal includes data representative of the voltage measured by the sense circuitry at the electric load device.

8. The system of claim 7 , the system control circuitry to further:

develop a relationship between the source output voltage and the load voltage using the received data representative of the voltage measured by the sense circuitry at the electric load device.

9. The system of claim 8 the control circuitry to further:

responsive to receipt of an input that includes data representative of a target load voltage, determine a source voltage to deliver the target load voltage at the electric load device using the source voltage/load voltage relationship; and

cause the power supply circuitry to provide a voltage output at the determined source voltage.

10. A system to control power delivery to an electric load device, the system comprising:

calibration device circuitry disposed at the electric load device, the calibration device circuitry including:

voltage sense circuitry to measure, at a first periodic interval, a load voltage at the electric load device; and

calibration device control circuitry communicatively coupled to the voltage sense circuitry, the calibration device control circuitry to:

determine, at a second periodic interval, whether the measured load voltage exceeds a stored threshold voltage value; and

responsive to a determination that the measured load voltage exceeds the stored threshold voltage value, generate a load voltage output signal;

power supply circuitry to provide a source voltage, the power supply circuitry including:

load regulation circuitry to adjust the source voltage provided by the power supply circuitry; and

system control circuitry communicatively coupled to the calibration device circuitry and to the power supply circuitry, the system control circuitry to:

responsive to an absence of the load voltage output signal, generate at a third periodic interval, a source voltage control signal to cause an incremental change in the source voltage at the third periodic interval; and

responsive to receipt of the load voltage output signal cease generation of the source voltage control signal.

11. The system of claim 10 wherein the first periodic interval and the second periodic interval are equal.

12. The system of claim 11 wherein the second periodic interval is shorter in duration than the third periodic interval.

13. The system of claim 10 wherein the first periodic interval is shorter in duration than the second periodic interval.

14. The system of claim 10 wherein the load voltage output signal comprises a current spike on power wiring delivering the output voltage to the electric load device.

15. The system of claim 10 :

wherein the calibration device further comprises wireless communication interface circuitry; and

wherein the load voltage output signal comprises a wireless signal communicated to the system control circuitry.

16. The system of claim 10 :

wherein the calibration device further comprises power line communication interface circuitry; and

wherein the load voltage output signal comprises a signal communicated to the system control circuitry via power wiring conductively coupling the power supply circuitry to the electric load device.