Accession Number : ADD012188

Title :   Magnetic Bridge Proximity Sensor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Heemstra,Frank W

Report Date : 11 Dec 1984

Pagination or Media Count : 9

Abstract : A proximity sensor for indicating the spatial proximity of a ferrous object comprising a magnetic reluctance bridge formed from a plurality of high and low permeability sections and with a ring core flux gate magnetometer disposed there between to form the center reluctance path of the bridge in order to sense flux when the bridge is unbalanced, a dc magnetic field generator disposed along a line of symmetry for the bridge for providing magnetic flux in the bridge, wherein a ferrous object disposed adjacent one of the low permeability sections will unbalance the bridge and cause flux to be detected by the flux gate magnetometer, and further including circuitry for generating a triggering signal when flux is detected by the magnetometer. (Author)

Descriptors :   *PATENTS, *MAGNETIC DETECTORS, *PROXIMITY DEVICES, *BRIDGES, *MAGNETOMETERS, MAGNETIC FIELDS, TRIGGER CIRCUITS, ELECTROMAGNETIC PROPERTIES, FLUX(RATE), GATES(CIRCUITS), SIGNALS, IRON ALLOYS, ELECTRIC GENERATORS, DIRECT CURRENT, SYMMETRY, PATHS, PERMEABILITY, GENERATORS, DETECTORS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE