PROBLEM TO BE SOLVED: To provide passive wireless sensors for rotary machines.SOLUTION: A rotary machine includes a rotatable shaft and a retaining ring coupled to, and extending about, the rotatable shaft. The rotatable shaft defines a longitudinal axis. The rotatable shaft and the retaining ring define an annular cavity. The rotatable shaft and the retaining ring each include a radially outer surface. The rotary machine also includes a monitoring system, which includes a stationary reader-antenna positioned proximately to the retaining ring and a radio frequency (RF) coupler. The RF coupler includes a flexible antenna band coupled to, and extending over, the radially outer surface of the retaining ring. The flexible antenna band is configured to establish RF coupling with the stationary reader-antenna. A sensor die is coupled to the flexible antenna band, extends into the substantially annular cavity, and is also coupled to the radially outer surface of the rotatable shaft.SELECTED DRAWING: Figure 1

    【課題】回転機械用の受動的ワイヤレスセンサを提供する。【解決手段】回転機械は、回転可能シャフトと、回転可能シャフトに結合されかつ回転可能シャフトの周りに延びる保持リングとを含む。回転可能シャフトは、長手方向軸を画定する。回転可能シャフトおよび保持リングは、環状の空洞を画定する。回転可能シャフトおよび保持リングはそれぞれ、半径方向外側表面を含む。回転機械はまた、保持リングに近接して位置付けられる固定リーダアンテナと、無線周波数(RF)カプラとを含んだ監視システムを含む。RFカプラは、保持リングの半径方向外側表面に結合されかつ半径方向外側表面にわたって延びる可撓性アンテナバンドを含む。可撓性アンテナバンドは、固定リーダアンテナとのRF結合を確立するように構成されている。センサダイが、可撓性アンテナバンドに結合され、実質的に環状の空洞の中に延び、回転可能シャフトの半径方向外側表面にも結合される。【選択図】図1


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    Title :

    PASSIVE WIRELESS SENSORS FOR ROTARY MACHINES


    Additional title:

    回転機械用の受動的ワイヤレスセンサ


    Contributors:

    Publication date :

    2017-01-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G08C Übertragungssysteme für Messwerte, Regel-, Steuer- oder ähnliche Signale , TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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