An optical fiber anemometer based on the Pitot-static tube is reported. The device was fabricated in a 3-D printer, and the pressure difference was assessed by means of a latex rubber diaphragm with a mounted fiber Bragg grating probe, so the membrane deflection is obtained in terms of the fiber curvature. The sensor characteristics were first obtained by the simulation in order to determine the correlation between the Bragg wavelength shifts and the airflow speed. Next, the device was experimentally evaluated in a wind tunnel, allowing for the assessment of a 20–36-m/s dynamic range, with 24.9-pm/(m/s) maximum sensitivity and 0.04-m/s resolution. Finally, the system was tested on the measurement of cyclic airflow speeds for predicting the applied speed according to the calibration curve, yielding reproducible results with an average error of 0.98 m/s, which is comparable to other reported sensors based on more complex designs and interrogation setups.

中文翻译：

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基于皮托管的全光纤风速计

报道了一种基于皮托静压管的光纤风速计。该装置是在 3-D 打印机中制造的，并且通过带有安装的光纤布拉格光栅探头的乳胶橡胶隔膜评估压力差，因此根据光纤曲率获得膜偏转。传感器特性首先通过模拟获得，以确定布拉格波长偏移与气流速度之间的相关性。接下来，该设备在风洞中进行了实验评估，允许评估 20-36-m/s 的动态范围，最大灵敏度为 24.9-pm/(m/s)，分辨率为 0.04-m/s。最后，该系统在循环气流速度的测量上进行了测试，以根据校准曲线预测应用速度，产生可重复的结果，平均误差为 0。