基于FPGA的多频耳声导抗测试系统的设计Design of multi-frequency ear acoustic immittance testing system based on FPGA
阮小微,林霖,王涛
摘要(Abstract)：
为了实现多频探测音的声导抗测试方法,提升声导抗诊断灵敏度,设计一种基于FPGA的多频耳声导抗测试系统。采用FPGA芯片协调多模块同步工作,实现上位机通信、探测音产生、气压改变、声压和气压信号采集、数据缓冲和传输等核心功能,由上位机软件对数据实时处理和鼓室导抗图显示。系统对多名正常听力成年人采用1 000 Hz高频和226 Hz低频探测音进行测试试验,结果稳定并与理论分析一致,表明该系统设计正确和工作可靠。
关键词(KeyWords)： FPGA;多频探测音;耳声导抗测试;诊断灵敏度;同步工作;鼓室导抗图
基金项目(Foundation): 广东省科技计划项目(2013B051000054)~~
作者(Author): 阮小微,林霖,王涛
DOI: 10.16652/j.issn.1004-373x.2018.12.016
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