Patent ID: 11871489
Assignee: LUTRON TECHNOLOGY COMPANY LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 12:
13. The method of claim 12, further comprising:
responsive to the determination that the lighting device should be placed in the INTERIM state:
incrementing, by the control circuit, a failure counter;
causing, by the control circuit, the drive circuit to provide an adjusted drive current to the at least one emitter using the data representative of the forward voltage across the photodetector;
calculating, by the control circuit, a second difference between the forward voltage across the at least one emitter at the adjusted drive current and the forward voltage across the photodetector; and
determining, by the control circuit, whether the second difference exceeds the defined threshold value; and
responsive to the determination that the second difference exceeds the defined threshold value:
incrementing, by the control circuit, the failure counter;
determining, by the control circuit, whether the failure counter exceeds a defined failure count threshold value; and
causing by the control circuit, the lighting fixture to enter the INOPERATIVE state responsive to the determination that the failure counter exceeds the defined failure count threshold value.