ACTIVE REFLECTED WAVE MONITORING

Abstract: embodiments relate to a device and method for determining a status of an environment and/or a status or condition of a person therein. the method may comprise: receiving an output of a sensor to monitor said environment; commencing a time window after the sensor detects activity in the environment; upon expiry of the time window, activating an active reflected wave detector to measure wave reflections from the environment, the detector consuming more power in an activated state than the sensor in an activated state; and determining a status of the environment and/or of a person therein based on an output of the active detector indicative of one or more of the measured reflections. the method comprises delaying expiry of the time window in response to the sensor detecting activity in the environment during the time window.

Inventor(s): Ilan HEVDELI, Ohad AMIR, Jonathan Mark SCHNAPP

CPC Classification: G01S13/88 (RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES)

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