Electricity: measuring and testing – Electrical speed measuring
Patent
1992-09-16
1994-07-19
Strecker, Gerard R.
Electricity: measuring and testing
Electrical speed measuring
324179, 324247, 340941, 364565, G01P 350, G08G 1052
Patent
active
053312767
ABSTRACT:
A passive velocity measuring system which includes first and second biaxial fluxgate magnetometers separated by a known distance and oriented precisely with respect to one another and with respect to the path of travel of a ferrous vehicle whose velocity is to be determined. An indication of the velocity of the vehicle is obtained from the ratio of the time derivative of the magnitude of the vehicle's magnetic induction to the negative of the spatial derivative of this same quantity.
REFERENCES:
patent: 3721859 (1973-03-01), Blanyer
Ellerbrake David G.
Polvani Donald G.
Strecker Gerard R.
Westinghouse Electric Corporation
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