Zhang Min, Xing Yimeng, Zhang Zhiguo, Chen Qiguan
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Sensors (Basel). 2014 Dec 12;14(12):23954-69. doi: 10.3390/s141223954.
A scheme for monitoring icing on overhead transmission lines with fiber Bragg grating (FBG) strain sensors is designed and evaluated both theoretically and experimentally. The influences of temperature and wind are considered. The results of field experiments using simulated ice loading on windless days indicate that the scheme is capable of monitoring the icing thickness within 0-30 mm with an accuracy of ±1 mm, a load cell error of 0.0308v, a repeatability error of 0.3328v and a hysteresis error is 0.026%. To improve the measurement during windy weather, a correction factor is added to the effective gravity acceleration, and the absolute FBG strain is replaced by its statistical average.
设计了一种利用光纤布拉格光栅（FBG）应变传感器监测架空输电线路覆冰情况的方案，并进行了理论和实验评估。考虑了温度和风的影响。在无风天气下使用模拟冰荷载进行的现场实验结果表明，该方案能够监测0至30毫米范围内的覆冰厚度，精度为±1毫米，称重传感器误差为0.0308v，重复性误差为0.3328v，滞后误差为0.026%。为了改善有风天气下的测量，在有效重力加速度中加入了一个校正因子，并用绝对FBG应变的统计平均值代替。
