Electricity: measuring and testing – Electrical speed measuring – Including speed analog electrical signal generator
Patent
1997-08-04
2000-01-18
Patidar, Jay
Electricity: measuring and testing
Electrical speed measuring
Including speed analog electrical signal generator
3242072, 32420725, 324174, G01P 352, G01B 730
Patent
active
060160551
ABSTRACT:
A device for measuring the rotation speed or detecting the direction of rotation of a rotary magnetic field includes a Hall sensor which is mounted as an SMD component on a printed circuit board. A magnet wheel is secured to a rotor spindle of an electric motor and a rotary magnetic field is generated upon its rotation. A magnetic flux guide element is provided for concentrating the rotary magnetic field in the region of the Hall sensor, thereby increasing the sensitivity of the Hall sensor.
REFERENCES:
patent: 4110676 (1978-08-01), Edick et al.
patent: 4857784 (1989-08-01), Mukaekubo
patent: 5070298 (1991-12-01), Honda et al.
patent: 5444369 (1995-08-01), Luetzow
patent: 5543672 (1996-08-01), Nishitani et al.
Jager Heimo
Kostler Werner
Greenberg Laurence A.
Lerner Herbert L.
Patidar Jay
Siemens Aktiengesellschaft
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