公开(公告)号：US07122783B1

公开(公告)日：2006-10-17

申请号：US10985077

申请日：2004-11-02

申请人： Robert A. Pastore, Jr. ,  John A. Kosinski ,  Hong-Liang Cui ,  Yan Zhang ,  Zhifan Yin ,  Bingquan Chen

发明人： Robert A. Pastore, Jr. ,  John A. Kosinski ,  Hong-Liang Cui ,  Yan Zhang ,  Zhifan Yin ,  Bingquan Chen

IPC分类号： G01J1/04 ,  G01J1/42 ,  G01J5/08 ,  G01J4/00

CPC分类号： G01V1/00

摘要： Fiber Bragg gratings (FBG) seismic activity sensors coupled in sensor arrays provide increased sensitivity to seismic activities, lower strain values and an absence of EMI allowing detection of troop and vehicle movements based on ground vibrations generating seismic signals. The FBG sensor head features a spring-mass configuration with a head surface, fiber optic cable and the FBG sensor attached to a spring that stretches during the acceleration of the mass. Waves propagating inside the earth and along the ground arriving at the sensor locations cause movement of the seismic activity sensors embedded in the ground and this movement induces an acceleration-dependent change in the FBG gratings placed on the sensors. In multiple sensor configurations, the cable will be connected to the other sensors in the network. FBG sensors, sensor arrays and sensor methods are provided in several embodiments.

摘要翻译： 耦合在传感器阵列中的光纤布拉格光栅（FBG）地震活动传感器为地震活动提供了更高的灵敏度，更低的应变值和不存在EMI，从而可以基于产生地震信号的地面振动检测部队和车辆的运动。 FBG传感器头具有弹簧质量配置，带有头表面，光纤电缆，FBG传感器连接到在质量加速过程中延伸的弹簧。 传播到地球和沿着地面到达传感器位置的波浪使嵌入地面的地震活动传感器的运动发生变化，导致放置在传感器上的FBG光栅的加速度相关变化。 在多个传感器配置中，电缆将连接到网络中的其他传感器。 在几个实施例中提供FBG传感器，传感器阵列和传感器方法。