听觉脑干诱发电位仪的研究

发布时间：2018-06-17 01:47

本文选题：听觉脑干诱发电位(ABR) + 小型化　；参考：《北京交通大学》2010年硕士论文

【摘要】： 随着听力损失的低龄化,对新生儿的听力筛查显得尤为重要。通过听觉脑干诱发电位(ABR)来进行听力检测是现在客观检测听力的黄金标准,采用这种方法来进行新生儿的听力筛查,结果不受受试者影响,客观准确。针对当前ABR检测设备体积大,不利于便携的特点,为了使新生儿听力筛查更加方便快捷,本文基于减小体积、减小功耗、提高便携度的目的,设计一种可手持式的ABR听力检测设备,实现设备的小型化、便携化及低功耗。采集到的ABR信号非常微小,淹没在大量的噪声中,将信号通过模拟放大滤波电路处理后再在DSP中进行叠加平均运算,并把处理后的结果图形显示在LCD上,大大减小设备体积。 ABR信号是给人单侧耳一个Click短声刺激诱发产生的,系统通过DSP和Codec产生不同听力级的刺激声对人耳进行刺激；同时利用Codec的AD和DA转换功能,简化了转换电路。本系统的小型化及便携化为新生儿的听力检测带来了很大的方便。
[Abstract]:With the younger age of hearing loss, it is very important to screen the newborn hearing. Auditory brainstem evoked potential (ABR) is the gold standard for objective hearing detection. The results are not affected by the subjects and are objective and accurate. In view of the large volume of ABR testing equipment, which is not convenient for portable, in order to make neonatal hearing screening more convenient and fast, this paper aims to reduce the volume, reduce power consumption and improve portability. A portable ABR audiometer is designed to achieve miniaturization, portability and low power consumption. The ABR signal collected is very small and submerged in a large amount of noise. The signal is processed by analog amplifying and filtering circuit and then superposed average operation is carried out in DSP, and the result is displayed on LCD. ABR signal was induced by a click short sound stimulation of single lateral ear. The system stimulated human ear by DSP and Codec with different hearing levels. At the same time, the conversion circuit is simplified by using the AD and DA conversion function of Codec. The miniaturization and portability of the system bring great convenience to the newborn hearing test.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：R764

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