Geometrical instruments – Distance measuring – Scale reading position sensor
Patent
1988-08-19
1989-10-17
Haroian, Harry N.
Geometrical instruments
Distance measuring
Scale reading position sensor
33DIG1, 33784, G01B 702
Patent
active
048737704
ABSTRACT:
Disclosed is a capacitive measurement system. The system comprises structure for generating a plurality of waveforms, a calibrated reference member for use with a reader head in making a measurement, and a reader element configured for lateral movement with respect to the calibrated reference member. The calibrated reference member comprises one element of a capacitor. The reader element comprises a plurality of reader regions comprising the other element of the capacitor. The reader element also includes structure for receiving two signals resulting from coupling of the two capacitor elements. The system functions to detect a phase shift level between the two signals and to determine magnitude of lateral movement in a particular direction from the magnitude of the phase shift.
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Luttmer David J.
Panian Thomas L.
Wilson Raymond L.
Wixey Barry D.
Delta International Machinery Corp.
Haroian Harry N.
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