Electricity: measuring and testing – Electrical speed measuring – Including speed analog electrical signal generator
Patent
1980-12-09
1983-11-22
Krawczewicz, Stanley T.
Electricity: measuring and testing
Electrical speed measuring
Including speed analog electrical signal generator
G01P 346, G01P 352
Patent
active
044172087
ABSTRACT:
An apparatus for contactless distance, or travel and/or speed measurement of bodies moving substantially uniformly is disclosed. The apparatus has zones of electrically conductive material which are displaced in synchronism with the body and a measuring transducer disposed at a distance therefrom and spatially fixed, the measuring transducer having a high-frequency alternating current flowing through it. To permit construction of a measuring transducer having large geometric dimensions while detecting narrow electrically conductive zones (10) of attaining measurement signals which are relatively invulnerable to malfunction, the measuring transducer (15) is extended spatially over a multiplicity of zones (10) and has individual, active measuring faces (16) which are interconnected and spatially demarcated. The distance of these active measuring faces (16) from one another, viewed in the direction of movement of the zones (10), corresponds substantially to the distance (b) of adjacent zones (10) and the width of the measuring faces, also viewed in the direction of movement of the zones (10), corresponds substantially to the width (c) of the zones (10).
REFERENCES:
patent: 4164706 (1979-08-01), Akita
Dobler Klaus
Hachtel Hansjorg
Krawczewicz Stanley T.
Robert & Bosch GmbH
Solis Jose M.
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