EP 0041856 A1 19811216 - Telemetry apparatus.
Title (en)
Telemetry apparatus.
Title (de)
Fernmessapparat.
Title (fr)
Appareil de télémesure.
Publication
Application
Priority
US 15809280 A 19800610
Abstract (en)
The output from a strain gauge bridge 13 on a shaft is transmitted to a fixed detector 27, 29, 31 using only two coupling capacitors 19, 23, and 21, 25, each with a rotating plate 19 or 21 and a fixed plate 23 or 25, by applying the voltage from the bridge to a voltage to frequency converter 15 also mounted on the shaft. The converter 15 provides a square wave signal with frequency proportional to strain. This is received by the detector circuit as a differentiated square wave. A squaring amplifier 29 and frequency to voltage converter 31 reconstitute a voltage proportional to strain.
IPC 1-7
IPC 8 full level
G08C 17/06 (2006.01)
CPC (source: EP)
G08C 17/06 (2013.01)
Citation (search report)
Instrument Practice, Vol. 23, No. 5, May 1969 London (GB) "Short-Range Telemetry" page 369 * the whole article *
Designated contracting state (EPC)
AT DE FR
DOCDB simple family (publication)
EP 0041856 A1 19811216; ES 502872 A0 19820401; ES 8301024 A1 19820401
DOCDB simple family (application)
EP 81302527 A 19810608; ES 502872 A 19810609