A novel opto-electromagnetic actuator coupled to the tympanic membrane
A novel opto-electromagnetic actuator coupled to the tympanic membrane
复制标题
DOI：
10.1016/j.jbiomech.2008.09.015
复制
发表时间：
2008-12-05
影响因子：
2.4
通讯作者：
Liu, Tien-Chen
中科院分区：
文献类型：
--
作者：
Lee, Chia-Fone;Shih, Chih-Hua;Liu, Tien-Chen
研制了一种新型电磁振动传感器。致动器由两个光电二极管、两个永磁体、一个铝环、两个相对缠绕线圈、一个乳胶膜和一个Provil Novo（TM）膜组成。设计了一个光学探头，允许声音和光信号进入耳道，从而防止传统耳模的声学阻塞效应。两个发光二极管用于承载输入信号。相应的光电二极管用于接收光信号并在致动器中产生电流。光电磁振动驱动器的制造和测试使用激光多普勒测振仪。致动器显示出从300至6500 Hz的30至1 nm之间的振动位移，并且在较高频率下振幅减小。140 μ A的致动器在Limbo位移上的平均增益约为20 dB，相对于距鼓膜6cm处的87 dBA和0 μ A的致动器。(C)2008爱思唯尔有限公司保留所有权利。
A new type of electromagnetic vibration transducer designed to be placed onto the tympanic membrane was developed. The actuator consisted of two photodiodes, two permanent magnets, an aluminum ring, two Opposing Wound coils, a latex membrane and a Provil Novo (TM) membrane. An optic probe was designed to allow Sound and light signals to enter the ear canal, thereby preventing the acoustic Occlusion effect of traditional ear molds. Two light-emitting diodes were Used for carrying the input signals. The corresponding photodiodes were Used for receiving the light signals and generating currents in the actuator. The opto-electromagnetic vibration actuator was fabricated and tested using a Laser Doppler vibrometer. The actuator showed displacements of vibration between 30 and 1 nm from 300 to 6500 Hz and reduced in amplitude at higher frequencies. The average gain of the actuator with 140 mu A on the Limbo displacement was about 20 dB relative to 87 dBA at the distance of 6 cm from the tympanic membrane and 0 mu A in actuator. (C) 2008 Elsevier Ltd. All rights reserved.