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    • 3. 发明申请
    • Monitoring device for rotating body
    • 旋转体监测装置
    • US20050253051A1
    • 2005-11-17
    • US11022017
    • 2004-12-23
    • Yoha HwangSang LeeJong Lee
    • Yoha HwangSang LeeJong Lee
    • G01B11/16G01D5/353G01J5/08G01L1/24
    • G01B11/165G01D5/35303G01L1/246G02B6/3604
    • A fiber Bragg grating (FBG) sensor is mounted to a rotating body, which is supported by a rotating shaft mounted rotatably with respect to a fixed element. The FBG sensor extends along the rotating shaft, one end of which is disposed at the center of the end of the rotating shaft. An optical fiber is mounted to the fixed element, one end of which is disposed opposite to the end of the FBG sensor, apart from the FBG sensor. Light emitted from a broadband light source passes through the optical fiber and is transmitted to the FBG sensor across a gap between the optical fiber and the FBG sensor. The FBG sensor reflects light with frequencies corresponding to deformation of the rotating body. A data processing unit receives the reflected light and calculates the deformation of the rotating body based thereupon.
    • 光纤布拉格光栅(FBG)传感器安装在旋转体上,旋转体由相对于固定元件可旋转地安装的旋转轴支撑。 FBG传感器沿着旋转轴延伸,其一端设置在旋转轴的端部的中心。 光纤安装在固定元件上,其一端与FBG传感器相对设置,与FBG传感器的端部相对。 从宽带光源发射的光穿过光纤,并通过光纤和FBG传感器之间的间隙传输到FBG传感器。 FBG传感器反射具有对应于旋转体的变形的频率的光。 数据处理单元接收反射光并据此计算旋转体的变形。