公开(公告)号：KR100726206B1

公开(公告)日：2007-06-11

申请号：KR1020060009433

申请日：2006-01-31

Applicant: 한국표준과학연구원

Inventor： 권일범 ,  김치엽 ,  서대철 ,  황효창

IPC: G01B11/16

Abstract: A fiber optic two mode interferometric sensor for detecting an abnormal status and a signal processing method using the same are provided to detect the abnormal status using an optical fiber sensor and an optical fiber sensor system. A fiber optic two mode interferometric sensor for detecting an abnormal status includes a melted connection part, and a signal processor. The melted connection part is aligned to a center of two cores of the optical fibers. The signal processor performs a signal processing operation. Light entered the waveguide from a laser diode enters a detection optical fiber. The signal processor obtains data from a sensor for certain time intervals. The data obtained for certain time intervals are analyzed to set an alarm level and a hazard level. Then, whether the absolute level is smaller than a reference level set by a sure is determined. When the absolute level is smaller than the reference level, it is determined that the optical fiber is cut.

Abstract translation: 提供了一种用于检测异常状态的光纤双模式干涉传感器以及使用它的信号处理方法，以使用光纤传感器和光纤传感器系统来检测异常状态。 用于检测异常状态的光纤双模式干涉传感器包括熔化的连接部分和信号处理器。 熔化的连接部分与光纤的两个芯的中心对齐。 信号处理器执行信号处理操作。 光从激光二极管进入波导进入检测光纤。 信号处理器在一定的时间间隔内从传感器获取数据。 分析获得的特定时间间隔的数据以设置警报级别和危险级别。 然后，确定绝对水平是否小于确定的参考水平。 当绝对等级小于参考等级时，确定光纤被切断。