Title:
【発明の名称】磁気位置検出器
Document Type and Number:
Japanese Patent JPH02503235
Kind Code:
A
Abstract:
A position sensor and method for detecting and providing an indication of the position of a movable member comprising a ferromagnetic element oriented substantially parallel to the path of travel of the movable member, the element including a segment thereof having spaced-apart ends defining the positional limits between which movement of the movable member is to be monitored, the segment comprising a pair of contiguous, oppositely polarized, remanently magnetized regions defining an intersection along the length of the segment; a magnet positioned proximate the intersection and mounted in known spatial relationship to the movable member for movement therewith, and, simultaneously along the ferromagnetic element, the magnet providing a magnetic field presenting a constant polarity to the element and having a strength sufficient to locally polarize the element, whereby movement of the magnet means along the element alters the length of the respective regions; and, means for sensing the position of the intersection without altering that position and for providing an indication of the position of the movable member based thereon.
Inventors:
Gercheris, Ivan Jay
Application Number:
JP50266889A
Publication Date:
October 04, 1990
Filing Date:
February 10, 1989
Export Citation:
Assignee:
Gercheris, Ivan Jay
International Classes:
G01B7/00; G01B7/14; G01D5/20; G01D5/22; G01F23/62; (IPC1-7): G01B7/00; G01D5/20; G01F23/62
Attorney, Agent or Firm:
Shotaro Mogami