Detecting motion based on repeated wireless transmissions
US9523760B1 · kind B1 · utility
88Cited by
8References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 15, 2016 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Apr 15, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a general aspect, motion of an object is detected based on wireless signals. In some aspects, wireless signals based on a repeated wireless transmission are received at a wireless sensor device in a space. The received wireless signals are analyzed, by operation of a processor, to detect movement of an object in the space. The analysis includes determining complex values representing the relative phases and amplitudes of respective frequency components of each of the received wireless signals, and detecting movement of an object in the space based on a change in the complex values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.