Burgmeier Jörg, Schippers Wolfgang, Emde Nico, Funken Peter, Schade Wolfgang
Clausthal University of Technology, Energy-Campus, Am Stollen 19, 38640 Goslar, Germany.
Appl Opt. 2011 May 1;50(13):1868-72. doi: 10.1364/AO.50.001868.
A fiber Bragg grating sensor system used for monitoring the effects of strain on the power cable of an offshore wind turbine is presented. The Bragg grating structure was inscribed into coated nonphotosensitive standard telecommunication fibers using an IR femtosecond laser and the point-by-point writing technique. Because of the presence of the protective coating of the fiber, the mechanical stability of the resultant sensor device is better than that of a sensor consisting of a bare fiber. A system containing this sensing element was to our knowledge for the first time successfully installed and tested in an offshore wind turbine prototype (REpower 6M, REpower Systems, AG, Germany) in February 2010, near Ellhöft (Germany). The fabrication process of the fiber Bragg gratings, measurement results of the online monitoring, and a comparison between the sensor signal and commonly used sensing techniques are presented.
本文介绍了一种用于监测应变对海上风力涡轮机电力电缆影响的光纤布拉格光栅传感器系统。采用红外飞秒激光和逐点写入技术，将布拉格光栅结构写入涂覆的非光敏标准通信光纤中。由于光纤存在保护涂层，所得传感器装置的机械稳定性优于由裸光纤组成的传感器。据我们所知，2010年2月，一个包含这种传感元件的系统首次在德国埃勒霍夫附近的一个海上风力涡轮机原型（REpower 6M，德国REpower Systems公司）中成功安装并测试。文中介绍了光纤布拉格光栅的制造过程、在线监测的测量结果，以及传感器信号与常用传感技术之间的比较。
