Noncontact displacement pickup employing coaxial signal coupling
Abstract
Abstract THERE IS DISCLOSED HEREIN A NONCONTACT PROXIMITY SENSITIVE TRANSDUCER EMPLOYING A PICKUP RESPONSIVE TO DISTANCE DEPENDENT ENERGY VARIATIONS BETWEEN A PICKUP AND THE OBJECT UNDER INSPECTION. THE TRANSDUCER INCLUDES MEANS FOR GENERATING A SIGNAL WHICH IS MODIFIED BY THE SPACIALLY DEPENDENT PHENOMENON MEASURED BY THE PICKUP AND SUITABLE SIGNAL PROCESSING CIRCUITRY FOR EXTRACTING FROM THE MODIFIED SIGNAL, THE VARIATIONS IN THE PICKUP TO OBJECT SPACING. THE PICKUP IS CHARACTERIZED BY AN ELONGATED RODLIKE SENSING MEMBER COAXIALLY POSITIONED WITHIN AN ELONGATED HOLLOW CYLINDRICAL COUPLING MEMBER BY WHICH THE PICKUP SIGNAL IS COUPLED FROM THE SENSING ELEMENT TO THE ANCILLARY ELECTRONIC CIRCUITRY.
Inventors
- 👤 Eugene R Lucka
Bibliographic Details
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