SENSING APPARATUS AND METHOD

摘要

There is described a number of sensors which can be incorporated within a washing machine or the like to enable greater controllability. In particular, there is described a pressure sensor which uses an inductive sensor to measure the displacement of a moveable wall of an enclosure that can form part of a water level sensor within a washing machine, There is also described a connector having two relatively moveable parts and inductive sensor, including a resonant circuit which electromagnetically couples an excitation winding and a sensor winding, for detecting the relative position of the two moveable parts. There are also described a number of LVDT type sensors in which a magnetically permeable body moves through an aperture defined by a planar substrate, and the planar substrate has formed thereon plural planar coils which spiral around the aperture and are spaced at intervals along the thickness of the planar substrate.