Locating system to determine the position of movable bodies with

Details Locating system to determine the position of movable bodies with Locating system to determine the position of movable bodies with

1975-08-13

1978-06-13

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Displacement

324 16T, 324174, 310111, 123117D, G01R 3312

Patent

active

040951790

ABSTRACT:
The movable body is supplied with at least two marker elements to move therewith, the reference being at a fixed location at which a stationary transducer is located responsive to the marker elements and to provide output signals staggered in time as the marker elements pass by the transducer, so that the marker elements in combination with the transducer form a pulse source. The individual marker elements are different to provide pulses having respectively different characteristics, which pulses are conducted to threshold stages which, in turn, are connected to a logic circuit to evaluate and logically combine the respectively different pulses from the pulse source. Different pairs of marker elements, for example associated with different pistons of a multi-cylinder internal combustion engine can be characterized by additional marker elements providing additional pulses which, in combination with one marker element, can characterize a certain number representative, for example, of a cylinder.

REFERENCES:
patent: 3230407 (1966-01-01), Marsh, Jr.
patent: 3548300 (1970-12-01), Nolting
patent: 3562741 (1971-02-01), McEvoy et al.
patent: 3883795 (1975-05-01), Klein et al.

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