Patent ID: 11971471
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 5:
6. A device for detecting an approach of an object on a lateral side of a moving motor vehicle, said device configured to be incorporated in door handles on said lateral side of said vehicle, each of which includes an ultra-high-frequency antenna configured, when the vehicle is stationary, to detect a presence of a portable user apparatus in a vicinity of the vehicle and to identify said apparatus in order to validate hands-free access to the vehicle for a user, said device comprising:
at least one processor configured to:
cause each one of said antennas to emit an electromagnetic field, a first radiated power per steradian of which, in a first zone oriented toward the outside of the vehicle and defined by a first aperture angle, is greater than a second radiated power per steradian in a second, lateral zone directed toward another one of the antennas and defined by a second aperture angle,
while the vehicle is moving, m measure a power of the electromagnetic field received by each of the antennas,
compare the value of a received power with a predetermined minimum received power, and
store the received power.