CHILD SEAT PRESENCE AND/OR ORIENTATION DETECTION SYSTEM

摘要

A child seat presence and/or orientation detection system for detecting, on a vehicle seat, presence and/or orientation of a transponder-equipped child seat comprises a loop-shaped transmission antenna for transmitting an electromagnetic excitation field and a loop-shaped reception antenna for receiving an electromagnetic response field emitted by a transponder of a child seat in response to the electromagnetic excitation field. The loop-shaped transmission antenna surrounds a first, the loop-shaped reception antenna a second area. The second area includes an overlap area with the first area. The second area also includes a non-overlap area with the first area, i.e. an area which is part of the second area but does not overlap with the first area, such that the magnetic flux caused by the loop-shaped transmission antenna in the non-overlap area is of opposite sign with respect to the magnetic flux caused by the loop-shaped transmission antenna in the overlap area.