公开(公告)号：US06237421B1

公开(公告)日：2001-05-29

申请号：US09335265

申请日：1999-06-17

申请人： Xin zen Li ,  Shiro Takada ,  Masayuki Miyazaki

发明人： Xin zen Li ,  Shiro Takada ,  Masayuki Miyazaki

IPC分类号： G01L124

CPC分类号： G01L1/242 ,  G01D5/35348 ,  G01M11/39

摘要： A light intensity measurement unit can sample the light intensity of scattered light at time intervals of a certain length corresponding to two times the length of each of small equal length sections, into which a measurement area in an optical fiber is divided. A computation unit can then compute the strain and/or temperature of each of the small sections of the measurement area in the optical fiber, based on the light intensity of the scattered light measured by the light intensity measurement unit from the scattering gain coefficient of the scattered light associated with each of the small sections.

摘要翻译： 光强测量单元可以以对应于光纤中的测量区域被划分的每个小等长部分的长度的两倍的一定长度的时间间隔采样散射光的光强度。 计算单元可以根据由光强测量单元测量的散射光的光强度，根据光强度测量单元的散射增益系数计算光纤中测量区域的每个小部分的应变和/或温度 与每个小部分相关联的散射光。