Method and system for presence detection
US7760130B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Oct 20, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for presence detection using a microwave transmitter and a microwave receiver, the method including generating a sequence of clock pulses by means of a pulse generator, feeding the clock pulses to a clocked circuit arranged to generate a sequence of first pulses of a first pulse length and a sequence of second pulses of a second pulse length, each one of the first and second pulse lengths being related to a predetermined number of the clock pulses, periodically actuating the microwave transmitter by means of the sequence of first pulses, periodically actuating the microwave receiver by means of the sequence of second pulses; and determining whether an object is present in the detection volume based on microwave radiation being received by the microwave receiver. A system for such presence detection is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.