System and methods for radar-based detection of people in a room
US11709245B2 · kind B2 · utility
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13References
9Claims
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Key dates
| Filing date | Apr 24, 2020 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system improve on the accuracy of detecting the presence of people in a room. Aspects of the embodiments may be used for occupancy sensors by monitoring occupant physiological movements. In an embodiment, a Doppler radar sensor may be used to measure the occupant-related physiological signals, calculate the Riemann integral (RI) of the occupants' cardiopulmonary movement displacement, body movement index (BMI), and amplitude difference accumulation (ADA) of the body movement. A determination for detection of occupants may be by adaptive thresholding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.