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    • 1. 发明授权
    • Smart fiber optic magnetometer
    • 智能光纤磁力计
    • US06433543B1
    • 2002-08-13
    • US09683480
    • 2002-01-04
    • Mohsen ShahinpoorSorin Gabriel PopaLaurel O. Sillerud
    • Mohsen ShahinpoorSorin Gabriel PopaLaurel O. Sillerud
    • G01R33032
    • G01R33/0327
    • A smart magnetometer which includes at least one cantilevered magnetostrictive/optical fiber structural bonded composite in a vibrationally isolated housing allowing an optical signal to be transmitted and detected from one optical fiber to another such that fluctuations of the surrounding magnetic field H will cause fluctuating mechanical torque on the composite magnetostrictive beam which will be applied to the bonded cantilevered optical fiber to deflect or misalign and cause modulation of the optical signal transmitted between the two fibers. This modulation can be calibrated to the dynamic variation of strength of a neighboring magnetic field to a precision and sensitivity of less than 1 fT and 1 fT/sqrtHz. The system is smart to selectively filter out any neighboring magnetic field with average strength smaller or greater than a certain critical value. The system is also smart enough to switch from one magnetic field average strength and/or direction to another with different average strength and/or direction.
    • 一种智能磁力计,其包括在振动隔离的壳体中的至少一个悬臂磁致伸缩/光纤结构粘合复合材料,允许将光信号从一根光纤传输到另一根光纤,使得周围磁场H的波动将引起波动的机械扭矩 将复合磁致伸缩光束施加到粘合的悬臂光纤上以偏转或不对准,并引起在两根光纤之间传输的光信号的调制。 该调制可以校准为相邻磁场的强度的动态变化,精度和灵敏度小于1 fT和1 fT / sqrtHz。 该系统智能地选择性地过滤出平均强度小于或大于某一临界值的任何相邻磁场。 该系统也足够聪明,可以从不同的平均强度和/或方向从一个磁场平均强度和/或方向切换到另一个。