| 题名 | 基于近距离通信技术的电子耳蜗反馈式接收刺激器系统的设计与实现 |
| 作者 | 胡民 |
| 学位类别 | 博士 |
| 答辩日期 | 2007-06-05 |
| 授予单位 | 中国科学院声学研究所 |
| 授予地点 | 声学研究所 |
| 关键词 | 电子耳蜗 反馈式接收刺激器 近距离通信 电极 可编程电流源 |
| 其他题名 | Design and Implementation of the Electronic Cochlea Feedback Receiver-Stimulator System Based on NFC Technology |
| 学位专业 | 信号与信息处理 |
| 中文摘要 | 电子耳蜗，又叫耳蜗内植体，能够植入到耳聋患者的内耳，将声音信号转换成电信号，直接刺激分布于内耳的听神经末梢，再由听神经将这些信息传入大脑，恢复严重耳聋患者的部分听力。 电子耳蜗通常由体外的言语处理器和体内的接收刺激器两部分组成。本文要实现的反馈式接收刺激器，主要完成两项功能：一方面，将接收到的电极刺激指令译码，分离出各个不同作用的控制信号，来选择刺激电极和控制可编程电流源，使刺激器根据不同的控制信号产生不同的双相恒流脉冲，驱动不同组合的电极，去刺激耳蜗内不同位置的听神经，使耳聋患者恢复听觉；另一方面，将检测到的耳蜗内部的参数，反馈给言语处理器，用于电子耳蜗植入人体后的康复培训阶段。 反馈式接收刺激器系统的实现是基于近距离通信技术协议的。飞利浦公司的近距离通信控制芯片PN531自动完成电极刺激指令的解调，并将反馈信号调制到13.56MHz的载波上，为系统的实现提供了极大的方便。 |
| 英文摘要 | Electronic cochlea, also called cochlear, can be implanted into the inner ear of the profoundly deaf. It can turn the sound signal into electrical signal and then stimulate directly the auditory nerve of the patient to restore their partial hearing. Usually, electronic cochlea consists of two parts, the speech signal processor out of the body and the receiver-stimulator in the body. The feedback receiver-stimulator implemented here mainly does such two things. In one hand, after decoding the received electrode stimulating command, it obtains the different control signals, which are used to select the active electrode and control the programmable current source. According to the different control signals, the receiver-stimulator produces different biphasic current pulses, which are used to drive a different combination of electrodes and stimulate the auditory nerve of different position in cochlea to restore some hearing of the deaf people. In the other hand, the receiver-stimulator feed back the detecting parameters of patient’s cochlea to the speech signal processor, which is used in recovering of patients after implanting electronic cochlea. The implementation of feedback receiver-stimulator system is based on the protocol of near field communication. PN531, which is a near field communication controller of Philips Company, demodulate the electrode stimulating command automatically, and modulate the feedback signal into the carrier wave, whose frequency is 13.56MHz. It makes the implementation of the system very convenient. |
| 语种 | 中文 |
| 公开日期 | 2011-05-07 |
| 页码 | 65 |
| 内容类型 | 学位论文 |
| 源URL | [http://159.226.59.140/handle/311008/246]  |
| 专题 | 声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 胡民. 基于近距离通信技术的电子耳蜗反馈式接收刺激器系统的设计与实现[D]. 声学研究所. 中国科学院声学研究所. 2007. |
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