Non-contact distance measurement system

Details Non-contact distance measurement system Non-contact distance measurement system

1974-11-11

1979-07-03

Rolinec, Rudolph V.

Electricity: measuring and testing

Magnetic

Displacement

324200, 324222, G01R 3312

Patent

active

041602048

ABSTRACT:
This distance measurement system employs the principle of electromagnetic induction to sense distances between an inductive transducer and an object. The inductive transducer forms a part of a signal phase network, and a means for comparing the signal of the inductive transducer to a reference signal provides linear output of the dimension between the transducer and an object. A circuit element such as a capacitor is connected in parallel with the inductive transducer to enhance the sensitivity and resolution of the measurement, to significantly reduce or eliminate error due to temperature, and to provide a high degree of output linearity relative to the distance measured.

REFERENCES:
patent: 3450985 (1969-06-01), Lorenzi et al.
patent: 3609527 (1971-09-01), Ellis
patent: 3851242 (1974-11-01), Ellis
patent: 3870948 (1975-03-01), Holt et al.

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