PVDF压电纤维仿生柔性传感器水下传感特性研究

感知器官对于许多动物必不可少,尤其是生活在水下的生物。该文以聚偏二氟乙烯(PVDF)为材料,模仿水生动物海豹的触须设计制备了一种表面四电极PVDF压电纤维仿生柔性传感器。利用激振源测试所制备的传感器性能,包括输出不同的波形测试对不同激励的感知,对水动力的感知及对水下运动物体方向的感知。实验结果表明,该传感器对不同激励的感知性能很好,速度检测极限可达0.15 mm/s,且有良好的方向性检测能力,对水下情况感知的应用前景广。

Research on Underwater Sensing Characteristics of PVDF Piezoelectric FiberBiomimetic Flexible Sensor

The sensory organs are essential for many animals, especially for those creatures living underwater. In this paper, a surface four-electrode PVDF piezoelectric fiber biomimetic flexible sensor was designed and fabricated using polyvinylidene fluoride(PVDF) as the material, imitating the tentacles of aquatic animal seals. The excitation source is used to test the performance of the prepared sensor, including outputting different waveforms to test the perception of different excitations, the perception of hydrodynamics and the perception of the directions of underwater moving objects. The experimental results show that the sensor has good sensing performance for different excitations; the speed detection limit reaches 0.15 mm/s, and has good directional detection ability. It has great application prospects for the underwater situation perception.