Simulation and test of three-frequency piezoelectric bone conduction hearing device

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

doi:10.3788/OPE.20152304.1011

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Simulation and test of three-frequency piezoelectric bone conduction hearing device

更新时间：2020-08-13

- Simulation and test of three-frequency piezoelectric bone conduction hearing device
- Optics and Precision Engineering Vol. 23, Issue 4, Pages: 1011-1018(2015)
- 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.20152304.1011
  CLC： R764.5;TN384
- Received：16 June 2014，
  
  Revised：19 July 2014，
  
  Published：25 April 2015
- 稿件说明：
移动端阅览
曾平, 高莹莹, 董景石等. 三分频式压电骨传导助听装置的仿真与测试[J]. 光学精密工程, 2015,23(4): 1011-1018

ZENG Ping, GAO Ying-ying, DONG Jing-shi etc. Simulation and test of three-frequency piezoelectric bone conduction hearing device[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1011-1018
曾平, 高莹莹, 董景石等. 三分频式压电骨传导助听装置的仿真与测试[J]. 光学精密工程, 2015,23(4): 1011-1018 DOI： 10.3788/OPE.20152304.1011.

ZENG Ping, GAO Ying-ying, DONG Jing-shi etc. Simulation and test of three-frequency piezoelectric bone conduction hearing device[J]. Editorial Office of Optics and Precision Engineering, 2015,23(4): 1011-1018 DOI： 10.3788/OPE.20152304.1011.

摘要

设计了一种采用3个结构尺寸不同的压电振子进行电信号-音频信号转换的三分频式压电骨传导助听装置

该装置可以适应较宽的工作频率范围。对压电振子进行了模态仿真分析和谐响应仿真分析

得出了压电振子最佳振型和谐振频率

确定了各个压电振子的工作频率段。根据仿真结果设计制作了三分频压电骨传导助听装置试验样机

对样机的幅频特性和响度进行了试验测试。结果显示:助听装置中低频、中频和高频压电振子的最大振动幅值分别为86.08 m、34.24 m和1.545 m

且处于各自振动频率段内;低频、中频和高频压电振子在各自频段内响度最大

各频段的最大响度值依次为69.1 dB、98.3 dB和117.1 dB。由于3个压电振子同时工作时

各频段声音都能得到较好的响应

因此拓宽了声音的响应频域。

Abstract

A three-frequency piezoelectric bone conduction hearing aid device was proposed. The device adopts three piezoelectric vibrators with different sizes to converse the electrical signals into audio signals

which could adapt to a wide frequency range. The modal analysis and harmonic response simulation analysis of the vibrators were conducted

the best modes and resonance frequencies of the vibrators were selected

and their operating frequency bands were determined. A prototype for three-frequency piezoelectric bone conduction hearing aid devices was designed and manufactured according to the simulation results

and its amplitude-frequency characteristics and loudness were tested. The experiments show that the maximum vibration amplitudes of the low-frequency

mid-frequency and high-frequency piezoelectric vibrators are 86.08 m

34.24 m and 1.545 m

respectively

and they appear in their respective frequency bands. At their own response frequency band

every piezoelectric vibrator's loudness is largest and the maximun values are 69.1 dB

98.3 dB and 117.1 dB

respectively. When three piezoelectric vibrators are working at their respective bands simultaneously

the sound in each frequency band could obtain very good response

which broadens the sound response frequency domain of the hearing device.

关键词

Keywords

references

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