Device for measuring a position of a moving object

Details Device for measuring a position of a moving object Device for measuring a position of a moving object

1982-05-13

1985-08-13

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

324235, G01B 714, G01R 3306

Patent

active

045352895

ABSTRACT:
A device for measuring the position of a moving body. A detected member made of magnetic material is secured to the moving body and an E-shaped magnet is arranged adjacent the measured member transverse to the direction of motion. A Hall IC for converting the variation of magnetic flux density of the magnet to the variation of voltage is secured to an end of a central leg portion of the magnet. The measured member is an elongated bar and is provided with a series of projections on the elongated bar at both sides. The projections of both sides are arranged in staggered relation. The Hall IC is adjacent to an inner portion of one of the projections when the moving body travels in the elongated direction. The Hall IC produces an output having a waveform with a zero level interval between inverted waves.

REFERENCES:
patent: 3230407 (1966-01-01), Marsh
patent: 3932813 (1976-01-01), Gallant
patent: 3947711 (1976-03-01), Presley et al.
patent: 4086533 (1978-04-01), Ricouard et al.
patent: 4093917 (1978-06-01), Haeussermann
patent: 4112366 (1978-09-01), Kouril et al.

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