仿生角加速度传感器设计及传感特性研究  

Study on Design and Sensing Characteristics of Bionic Angular Acceleration Sensor

作　　者：王智 陆施恩 李文康 边义祥[1] 姜亚妮 WANG Zhi;LU Shi’en;LI Wenkang;BIAN Yixiang;JIANG Yani(School of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225127

出　　处：《压电与声光》2022年第5期812-816,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金面上资助项目(51775483)。

摘　　要：半规管是人体前庭系统中的一种角位移感知器官,该文基于人体半规管几何尺寸、机械属性及内部结构,利用表面对称电极含金属芯聚偏二氟乙烯(PVDF)纤维(SMPF)传感器,设计制备了一种结构尺寸、工作机理与人体半规管基本一致的仿生角加速度传感器。同时搭建了实验系统,对仿生半规管传感器的感知理论模型进行了验证。实验结果证明,传感器的工作机理与数学模型推导结果基本一致,仿生传感器在不同加速度刺激下输出相应幅值的电信号。通过扫频实验确认系统固有频率约为10 Hz,可用于人体头部的运动检测。The semicircular canal is an angular displacement sensing organ in human vestibular system.In this paper,based on the geometric size,mechanical properties and internal structure of human semicircular canal,a bionic angular acceleration sensor with similar structure size and working mechanism as human semicircular canal is designed and fabricated by using the sensor with symmetrical electrode metal-core PVDF fiber(SMPF).At the same time,an experimental system is built to verify the sensing theoretical model of bionic semicircular canal sensor.The experimental results show that the working mechanism of the sensor is basically consistent with the derivation results of the mathematical model.The bionic sensor outputs electrical signals with corresponding amplitudes under different acceleration stimuli.Through the frequency sweep experiment,it is confirmed that the natural frequency of the system is about 10 Hz,which can be used for the motion detection of human head.

关 键 词：半规管 内淋巴 聚偏二氟乙烯(PVDF) 固有频率 角加速度传感器 

分 类 号：TN919[电子电信—通信与信息系统] TP212[电子电信—信息与通信工程] Q811[自动化与计算机技术—检测技术与自动化装置]