H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 35/14 (2006.01) B60R 21/01 (2006.01) G01P 15/093 (2006.01) G01P 15/105 (2006.01) G01P 15/11 (2006.01) G01P 15/135 (2006.01) G01P 21/00 (2006.01)
Patent
CA 2055776
Abstract of the Disclosure An acceleration sensor that comprises a body of non-magnetic construction having a linear internal cavity of uniform cross section, and a pair of permanent magnetics movably mounted within such cavity with like magnetic poles opposed to each other, such that the magnetics are urged to opposite ends of the cavity by force of magnetic repulsion therebetween. At least one weigand wire is positioned externally of the cavity between the cavity ends, and has a longitudinal dimension parallel to the lineal dimension of the cavity. The weigand wire is characterized by two stable magnetic flux-generating states dependent upon application of an external magnetic field of appropriate polarity for switching between such states. An electrical coil is positioned adjacent to the weigand wire, and is responsive to switching between the two flux-generating states for generating a sensor output signal as a result of acceleration forces on either of the magnets sufficient to overcome the force of magnetic repulsion therebetween, and thus to bring one of the magnets into proximity with the wire.
Marks & Clerk
Meister Jack B.
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