Piezoelectric bone-conduction hearing device with elastic support

ZENG Ping; CHEN Yan-hui; GAO Ying-ying; DONG Jing-shi; LI Yan-peng; CHENG Guang-ming

doi:10.3788/OPE.20142210.2765

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Piezoelectric bone-conduction hearing device with elastic support

更新时间：2020-08-13

- Piezoelectric bone-conduction hearing device with elastic support
- Optics and Precision Engineering Vol. 22, Issue 10, Pages: 2765-2772(2014)
- 作者机构：
  
  1. 吉林大学机械科学与工程学院,吉林长春,130022
  2. 浙江师范大学精密机械研究所,浙江金华,321004
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142210.2765
  CLC： R764.5;TN384
- Received：21 March 2014，
  
  Revised：04 May 2014，
  
  Published：25 October 2014
- 稿件说明：
移动端阅览
曾平, 陈艳辉, 高莹莹等. 弹性支撑式压电骨传导听觉装置[J]. 光学精密工程, 2014,22(10): 2765-2772

ZENG Ping, CHEN Yan-hui, GAO Ying-ying etc. Piezoelectric bone-conduction hearing device with elastic support[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2765-2772
曾平, 陈艳辉, 高莹莹等. 弹性支撑式压电骨传导听觉装置[J]. 光学精密工程, 2014,22(10): 2765-2772 DOI： 10.3788/OPE.20142210.2765.

ZENG Ping, CHEN Yan-hui, GAO Ying-ying etc. Piezoelectric bone-conduction hearing device with elastic support[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2765-2772 DOI： 10.3788/OPE.20142210.2765.

摘要

提出一种以圆形轮式片状弹簧作为中间弹性支撑的新型压电骨传导听觉装置以提高它的低频响应性能.通过对听觉装置的动力学建模

理论分析了由支撑弹簧和压电振子组成的振动系统;选择厚度为0.9 mm的片弹簧作为听觉装置的支撑元件

设计了圆形轮式片状支撑弹簧.最后

制作了弹性支撑式压电骨传导听觉装置的试验样机

搭建了试验测试系统

对样机的幅频特性、响频特性和噪频特性进行了试验测试.实验结果显示:当电源激励信号频率为550 Hz时

压电振子的最大振动幅值可达22.21 μm;中低频区域的响度为60~70 dB

中高频区域的响度稳定在80 dB左右;在离听觉装置1 m远处测试到听觉装置的噪声大小为35~40 dB.得到的数据表明:圆形中间弹性支撑式压电骨传导听觉装置具有较好的低频响应性能

其响度基本能够满足佩戴者的听力要求

近距离噪声也不大.

Abstract

A novel circular piezoelectric bone-conduction hearing device with a leaf spring support was proposed to improve its lower-frequency response performance. The equivalent dynamic system containing a support spring and a piezoelectric vibrator was analyzed theoretically by building the dynamic-model of the hearing device. The structure of the support spring was designed after selecting an optimum spring with the thickness of 0.9 mm as the support element. A prototype of piezoelectric bone-conduction hearing device was developed and the test system was built. The experimental test on amplitude-frequency characteristics and loudness-frequency characteristics were conducted. The results show that the maximum response amplitude of the piezoelectric system has reached up to 22.21 μm at 550 Hz. Furthermore

the loudness of the hearing device is between 60 dB and 70 dB in the low-frequency region

and that is stabilized at about 80 dB in the high-frequency region.The noise of the device is within a basically reasonable level of 35-40 dB at one meter away.It concludes that the response amplitude of the hearing device is larger in the low-frequency region; the loudness of the device basically meets the requirements of the wearers with a smaller noise.

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references

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