Electrodynamic position transducer with electronic memory means

Details Electrodynamic position transducer with electronic memory means Electrodynamic position transducer with electronic memory means

2007-02-20

2007-02-20

Patidar, Jay M. (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C073S728000

Reexamination Certificate

active

10508212

ABSTRACT:
The transducer (1) comprises: a rigid casing (2–4) in which a membrane (5) is clamped which, together with a portion of the casing (2–4), defines at least one chamber (6, 7) of variable volume; at least one winding (14); an interaction element (13), able to interact magnetically with the winding (14) under the effect of a displacement of the membrane (5), in such a way that the inductance of the winding (14) is variable in dependence on the relative position of the interaction element with respect to the winding (14), and circuit devices (17) connected to the winding (14) and operable to supply electrical signals of which one parameter, frequency for example, is variable in dependence on the inductance of the winding (14); the said circuit devices (17) including a memory (22) operable to store data representative of corrective values which, when applied in operation to the effective instantaneous values of the said parameter, make it possible to obtain correct values of the parameter corresponding to a predetermined transduction characteristic.

REFERENCES:
patent: 3455532 (1969-07-01), Barker
patent: 3884079 (1975-05-01), Turtle et al.
patent: 4149133 (1979-04-01), Hilgert
patent: 4174638 (1979-11-01), Zabler et al.
patent: 198 35 865 (1999-02-01), None
patent: 0 254 707 (1988-01-01), None

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