By David Shepardson
WASHINGTON (Reuters) - Tesla Inc. asked the Federal Communications Commission (FCC) for approval to market a short-range interactive motion-sensing device that could help prevent children from being left behind in hot cars and boost theft-prevention systems.
The California automaker wants permission to use unlicensed millimeter-wave sensors that would operate at higher power levels than allowed under existing rules.
Tesla's device would utilize four transmit and three receive antennas driven by a radar front-end unit. Tesla says millimeter wave radar technology has advantages over other sensing systems like camera-based or in-seat occupant detection systems.
The radar-based system "provides depth perception and can 'see' through soft materials, such as a blanket covering a child in a child restraint."
Tesla added ...
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