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对拖线阵聚氨酯管(PU管)内光纤压力传感器的响应特性开展理论及试验的研究,结果表明在拖线阵变速水平拖曳过程中,PU管内的油压沿着轴向会产生梯度分布,引起光纤压力传感器的测量结果偏离实际水深值。同时,根据分析结果,提出了一种拖线阵中光纤压力传感器的简易校准方法。
The research on the response characteristics of the fiber pressure sensor in the line-drawn polyurethane tube (PU tube) is carried out. The results show that the hydraulic pressure in the PU tube will have a gradient distribution in the axial direction during the towing at the variable speed towing line. Causing the fiber optic pressure sensor measurement deviates from the actual water depth. At the same time, based on the analysis results, a simple calibration method of fiber optic pressure sensor in drag line array is proposed.