APPARATUS HAVING FUNCTION OF DETECTING EXISTING POSITION OF METALLIC MEMBER.

摘要

The apparatus of the invention includes folded transmission lines (22) for sending a current for generating a magnetic field, and folded reception lines (26) disposed at a position at which they can electromagnetically couple with the transmission lines (22), for detecting the change of the magnetic flux due to the approach of a metal. The transmission lines (22) are disposed on a first plane, and the reception lines (26) are disposed on a second plane in parallel with the first plane in such a manner that the transmission lines are perpendicular to the reception lines in order to constitute a detection matrix (20).The detection matrix (20) is disposed on a panel surface, along which a metallic member to be detected moves, in such a manner as to oppose each other while keeping at least a space through which the metallic member can pass. Transmission means (50) and reception means (40) are connected to the detection matrices (20) so as to detect the existing position of the metallic member.