Jiang Yonggang, Ma Zhiqiang, Fu Jianchao, Zhang Deyuan
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.
International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, China.
Sensors (Basel). 2017 May 26;17(6):1220. doi: 10.3390/s17061220.
Surface mounted 'smart skin' can enhance the situational and environmental awareness of marine vehicles, which requires flexible, reliable, and light-weight hydrodynamic pressure sensors. Inspired by the lateral line canal system in fish, we developed an artificial lateral line (ALL) canal system by integrating cantilevered flow-sensing elements in a polydimethylsiloxane (PDMS) canal. Polypropylene and polyvinylidene fluoride (PVDF) layers were laminated together to form the cantilevered flow-sensing elements. Both the ALL canal system and its superficial counterpart were characterized using a dipole vibration source. Experimental results showed that the peak frequencies of both the canal and superficial sensors were approximately 110 Hz, which was estimated to be the resonance frequency of the cantilevered flow-sensing element. The proposed ALL canal system demonstrated high-pass filtering capabilities to attenuate low-frequency stimulus and a pressure gradient detection limit of approximately 11 Pa/m at a frequency of 115 ± 1 Hz. Because of its structural flexibility and noise immunity, the proposed ALL canal system shows significant potential for underwater robotics applications.
表面安装的“智能皮肤”可以增强海洋航行器的态势和环境感知能力，这需要灵活、可靠且轻质的流体动力压力传感器。受鱼类侧线管道系统的启发，我们通过将悬臂式流量传感元件集成到聚二甲基硅氧烷（PDMS）管道中，开发了一种人工侧线（ALL）管道系统。聚丙烯和聚偏二氟乙烯（PVDF）层叠合在一起形成悬臂式流量传感元件。使用偶极振动源对ALL管道系统及其表面对应物进行了表征。实验结果表明，管道传感器和表面传感器的峰值频率均约为110 Hz，这被估计为悬臂式流量传感元件的共振频率。所提出的ALL管道系统表现出高通滤波能力，可衰减低频刺激，并且在115±1 Hz频率下的压力梯度检测极限约为11 Pa/m。由于其结构灵活性和抗噪声能力，所提出的ALL管道系统在水下机器人应用中显示出巨大潜力。
