Accession Number : ADD010698

Title :   Portable Instrumentation Telemetry Device.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Beal,T E ; Boeglin,R W

Report Date : 06 Sep 1983

Pagination or Media Count : 5

Abstract : A shaft mountable, portable, low frequency FM transmission device for communicating rotating shaft mounted sensor information to a stationary platform. It includes a generally cylindrical, dynamically balanced sending unit attached to and encircling the shaft and a remote stationary receiver having a preamplifier and pickup loop encircling but not touching the sending unit. Information from shaft mounted transducers is transmitted from the shaft to the receiver using low frequency FM techniques. Low frequency FM operates at low power which permits use of small batteries containable in a reduced volume, requires minimal receiver electronics, allows undistorted signal transmission at high RPM's and is relatively insensitive to axial and radial shaft movement. (author)

Descriptors :   *Patents, *Tachometers, *Telemeter systems, *Rotation, *Transducers, *Instrumentation, Radio signals, Shafts(Machine elements), Remote detectors, Spinning(Motion), Centrifugal force, Electronic switches, Portable equipment, Frequency modulation, Preamplifiers, Loop antennas, Low frequency, Stationary, Loops, Low power, Receivers, Wave propagation, Platforms, Mounts, Electronics

Subject Categories : Test Facilities, Equipment and Methods
      Telemetry

Distribution Statement : APPROVED FOR PUBLIC RELEASE