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US 4,242,666 AGranted
Range selectable contactless data acquisition system for rotating machinery
AssigneeGeneral Electric Company
InventorsJohn M. Reschovsky, Gerald P. Hunt
Life of this patent
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AssigneeGeneral Electric Company
InventorsJohn M. Reschovsky, Gerald P. Hunt
Estimating the term…
A multichannel data acquisition system for physical measurements on rotating members of operating machinery avoids slip rings and radio telemetry for data transfer by providing a capacitive coupling link between rotating and stationary members. Electronic circuitry mounted on the rotating member provides a pulse-code modulated signal containing the measured information for transmission through the capacitive coupling link. Power required to operate the rotating circuitry is inductively coupled from a stationary high-frequency source. The rotating circuitry includes a digital counter whose count is incremented by a momentary power interruption and whose digital output corresponds to a particular measuring range, allowing a range selection to be made during machinery operation.
In combination with apparatus having a stationary member and a rotational member or rotor adapted to rotate at high speed within said stationary member, a multichannel data acquisition system for acquiring physical measurement data on parts of said rotational member comprising:
Dependencies are inferred from the claim text.