Wireless localization techniques in lighting systems
US8570221B2 · kind B2 · utility
14Cited by
2References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2009 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a system and method for localization positioning in lighting systems. At least two of a Time Difference of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Index (RSSI) and a Position Estimation Algorithm with unified TDOA and RSSI are used to obtain localization positioning. The schemes introduce a maximum-likelihood estimation strategy incorporating a partial derivative matrix for each lighting unit using at least two reference nodes in order to achieve higher accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.