Resonance frequency position sensor

Details Resonance frequency position sensor Resonance frequency position sensor

1989-12-26

1991-06-11

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Vibration type

73290V, 73717, 73736, G01L 1100, G01L 1302

Patent

active

050222694

ABSTRACT:
A position sensor includes a vibrating elongated member with a marker retained thereto in a sliding relationship thereon, wherein the marker coupled to a displacement of a target corresponding to a change of a physical quantity alters the natural frequency of the vibrating elongated member and, consequently, the numerical value of the physical quantity is determined from the natural frequency of the vibrating elongated member.

REFERENCES:
patent: 3048040 (1962-08-01), Pegram
patent: 3095745 (1963-07-01), Kirwan
patent: 3208281 (1965-09-01), Kalmus et al.
patent: 3372592 (1968-03-01), Gravert
patent: 4305283 (1981-12-01), Redding
patent: 4337656 (1982-07-01), Rapp
patent: 4839590 (1989-06-01), Koski et al.

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