摘要 |
<p>An occupant sensor (10) comprises an electric field sensor (100) comprising a plurality of first electrodes (103) mountable within a vehicle seat (3), wherein the plurality of first electrodes (103) are disposed on a common surface and are non-overlapping with one another. The electric field sensor (100) further comprises at least one second electrode (116), wherein the first (103) and second (116) electrodes are proximate to one another. A sensing circuit (106) is operatively coupled to the first (103) and second (116) electrodes so as to control the level of capacitance between an occupant (5) on the vehicle seat (3) and a circuit ground (110). In a second aspect, the electric field sensor incorporates a lattice electrode (119) with a ground plane (120). In a third aspect, the electric field sensor incorporates a receive electrode (126) that receives a signal from a sensing electrode (128) for purposes of mitigating the effects of a seat wetting condition.</p> |