Systems and methods for sensing environmental changes using light sources as sensors
US9618553B2 · kind B2 · utility
1Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Dec 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for sensing environmental changes using electromagnetic interference (EMI) signals are disclosed herein. An EMI monitoring system may be used to monitor an EMI signal of one or more light sources provided over a power line, e.g., in a home or building. The received EMI energy at the power line may be analyzed to detect variations in the EMI signature indicative of environmental changes occurring in the proximity of the light sources. Environmental changes that may be sensed include, but are not limited to, proximity, touch, motion, and temperature change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.