Occupancy and non-occupancy detection in the lighting system
AssigneeABL IP Holding LLC
InventorsMin-Hao Michael Lu, Michael Miu
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a lighting system including a detector, which is configure to obtain an indicator data of a RF signal. The detector compares the indicator data with a baseline indicator data to generate a difference value and determines a rate of change from the indicator data. The detector also determines a data metric based on the rate of change and the difference value and compares the data metric with a transition threshold to detect one of an occupancy condition or a non-occupancy condition in the area. The lighting system also includes a light source, which is controlled in response to the detected one of the occupancy condition or the non-occupancy condition in the area.
Claims30
A lighting system comprising:
- a wireless communication transmitter for transmission of a wireless radio frequency (RF) signal;
- a wireless communication receiver configured to receive the transmission of the RF signal and generate an indicator data of a signal characteristic of the RF signal;
- a detector coupled to the wireless communication receiver and configured to:
- determine a data metric based on a rate of change of the indicator data and difference between the indicator data and a baseline indicator data;
- and
- process the data metric to detect one of an occupancy condition or a non-occupancy condition in an area including the wireless communication receiver;
- and
- a light source located to illuminate at least a portion of the area and controlled in response to the detected one of the occupancy condition or the non-occupancy condition in the area.
A lighting system comprising:
- a plurality of system nodes,
- each of a plurality of the system nodes including a light source and being configured as a lighting device, and
- at least one other of the system nodes:
- including one of a user interface component and being configured as a lighting controller, a switchable power connector and being configured as a plug load controller, or a sensor detector and being configured as a lighting related sensor;
- wherein each respective system node further comprises:
- a wireless communication interface including a wireless communication transmitter and a wireless communication receiver configured to enable wireless data communication among the system nodes;
- a processor coupled to at least one of the light source, the user interface component, the switchable power connector or the detector and coupled to communicate via the communication interface and a wireless network link;
- a memory accessible to the processor;
- programming in the memory which configures the processor to control operations of the respective system node as one of the lighting device, the lighting controller, the plug load controller or the lighting related sensor,
- wherein:
- programming in a system node configures the system node to transmit a radio frequency (RF) signal;
- programming in at least one of the system nodes configures the at least one of the system nodes to receive the transmission of the RF signal through an area illuminated by the lighting device and generate indicator data of a signal characteristic of the received RF signal;
- and
- programming in the at least one of the system nodes configures the at least one of the system nodes to:
- determine a data metric based on a rate of change of the indicator data and difference between the indicator data and a baseline indicator data;
- and
- process the data metric to detect one of an occupancy condition or a non-occupancy condition in the area including the wireless communication receiver.
A method comprising:
- obtaining, in a lighting system, indicator data of a radio frequency (RF) signal received via a wireless communication receiver;
- determining a data metric based on a rate of change of the indicator data and difference between the indicator data and a baseline indicator data;
- processing the data metric to detect one of an occupancy condition or a non-occupancy condition in an area including the receiver;
- and
- controlling a light source in the lighting system in response to the detected one of the occupancy condition or the non-occupancy condition in the area.
Dependencies are inferred from the claim text.