Linkage of position sensor

Details Linkage of position sensor Linkage of position sensor

1998-02-17

2000-01-25

Patidar, Jay

Electricity: measuring and testing

Magnetic

Displacement

32420722, 32420724, 32420725, G01B 714, G01B 730

Patent

active

060182415

ABSTRACT:
An extremely reliable and effective position sensor is provided at low cost for determining the relative position of a mechanical linkage with respect to a reference point. The position sensor includes a rotor or bracket which is mechanically coupled to the linkage and contains at least two magnets on opposite walls adjacent a channel opening. The opposing magnets are formed with first and second sloped or ramped sections which produce produce variable magnetic fields as determined by the geometric profile of the magnets. One or more detectors are positioned in the air gap between the opposing magnets. As the linkage is moved, the rotor or bracket moves with respect to the detector causing a change in the strength of the magnetic field detected by the detector whereby the detector determines the position of the movable linkage.

REFERENCES:
patent: 4392375 (1983-07-01), Eguchi et al.
patent: 4570118 (1986-02-01), Tomczak et al.
patent: 4703261 (1987-10-01), Berchtold
patent: 5191284 (1993-03-01), Moretti et al.

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