基于奥米亚寄生蝇的三维声定位MEMS器件设计

The Design of Fly Ormia Ochracea Inspired MEMS Sensor for Sound Localization in Three Dimensions

为进一步减小声定位器件尺寸、提高测量精度,我们提出了一种微型仿生三维声定位传感器,利用MALAB对该听觉模型进行了分析,结合ANSYS进行了器件的设计与仿真。仿真结果表明:该传感器很好的实现了耦合放大机制,对于244 Hz的声波,入射角度在XZ平面内从90゜变化至0゜时,振幅值比从1变化至3.11,时延从0变化至45μs,YZ平面内,振幅值比从1变化至2.85,时延从0变化至43μs。

In order to reducing the size of sound localization device,improving the accuracy of measurement.,a novel bionic sensor for sound localization in three dimensions was presented. MATLAB was used to simulate the physics model,after that a novel MEMS Sensor for Sound Source Localization in Three Dimensions was designed,ANSYS was utilized to analyse this sensor. From above analysis,the designed sensor has the ability to sensitise the changes of the incidence angle,when the angel of the sound source changes from 90° to 0° and frequency at 244 Hz in XZ plane,the vibration intensity ratio between the two thin slices of the sensor changes from 1 to 3. 11. The difference in time arrival changes from 0 to 47 μs. In YZ plane,vibration intensity ratio changes from 1 to 2. 85,time difference changes from 0 to 45 μs.