Patent ID: 11885672
Assignee: LUTRON TECHNOLOGY COMPANY LLC
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 6:
7. A load control method, comprising:
causing, by the control circuitry, a periodic cycling of a communicatively coupled photosensor from a STANDBY state to an ACTIVE state and back to the STANDBY state at a first interval;
receiving, by the control circuitry from the photosensor, a value representative of a measured ambient light level in a space responsive to cycling the photosensor to the ACTIVE state;
storing, by the control circuitry in communicatively coupled memory circuitry, the received value representative of the measured ambient light level in the space;
determining, by the control circuitry, a rate of change of the ambient light level using at least two of the stored values representative of the measured ambient light level in the space
determining, by the control circuitry, whether the calculated rate of change of the ambient light level in the space is greater than a first threshold value corresponding to a high rate of change in ambient light level in the space;
generating, by the control circuitry, a control signal output to adjust one or more electrical load control devices in the space responsive to the determination that the calculated rate of change of the ambient light level in the space is greater than the first threshold value, wherein each of the one or more electrical load control devices operatively couples to one or more electrical load devices that contribute to the ambient light level in the space;
causing, by the control circuitry, a transition of communicatively coupled RF transceiver circuitry from a STANDBY state to an ACTIVE state responsive to the generation of the control signal output;
causing, by the control circuitry, a communication of the control signal output to the one or more electrical load control devices; and
causing, by the control circuitry, a transition of the RF transceiver circuitry from the ACTIVE state to the STANDBY state responsive to the communication of the control signal output to the one or more electrical load control devices.