請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25796
標題: | 無線超音波神經電刺激器 Wireless Ultrasound Stimulation Microsystem |
作者: | Jyun-Ru Wang 王駿儒 |
指導教授: | 劉深淵 |
關鍵字: | 超音波,刺激器, Ultrasound,Stimulation, |
出版年 : | 2011 |
學位: | 碩士 |
摘要: | 本論文是採用無線超音波傳遞資料和能量,並運用於神經電刺激器。相較於傳統線圈耦合的方式,超音波傳輸不但沒有輻射污染的問題,且能提供較長的傳輸距離,較適合身體組織深處的刺激。
本論文主要分為三個部份,首先介紹神經電刺激器,刺激器可輸出0.1mA 到 0.94mA 的電流,刺激頻率可操作在60Hz到300Hz適用生物組織,整體消耗功率為2.1mW。 第二部份介紹一個使用振幅偏移載波調變(ASK-Carrier)的無線超音波刺激器,此ASK-Carrier傳輸方式成功的接收超音波訊號且利用此傳輸方式操控刺激器之電流及頻率,同時也提出一個低功率的功率接收器於此無線超音波傳輸技術。此無線超音波刺激器是使用台積電 0.35um 2P4M 標準 CMOS製程來實現,面積為 2.2mm*2 mm,此晶片量測結果最大資料傳輸率為25 kbps,功率接收器的功率消耗為58.17uW。 第三部份為一個使用頻率偏移脈波寬度調變(FSK-PWM)的無線超音波刺激器,此FSK-PWM傳輸方式成功的接收超音波訊號且利用此方式操控刺激器之電流及頻率,同時一個無線超音波能量傳輸技術同樣運用於此,此無線超音波刺激器使用台積電 0.35um 2P4M 標準 CMOS製程來實現,面積為 2.2mm*2.2 mm,此晶片量測結果最大資料傳輸率為50 kbps,功率接收器的功率消耗為55uW。 In this thesis, ultrasound transmission technique is adopted and uses this method in the neural stimulator. As opposed to traditional inductive magnetically method, the ultrasound transmission technique have no electromagnetic radiation contamination and the ultrasound transmission distance is up to several centimeters and it is suitable for stimulating the deep tissue. This thesis is mainly divided into three parts. Firstly, a neural stimulator is present. The stimulator can output the stimulation current which is from 0.1mA to 0.94mA. The stimulation frequency is from 60Hz to 300Hz which is suitable bioengineering. And the power consumption is 2.1mW. Secondly, a wireless ultrasound stimulation microsystem with Amplitude Shift Keying with Carrier (ASK-Carrier) is implementation. This transmission technique receives ultrasound input signal and demodulates signal to control stimulator’s output current and frequency successfully. Meanwhile, the power management circuit is proposed to achieve low power consumption for wireless ultrasound transmission technique. This proposed wireless ultrasound stimulation microsystem is fabricated in TSMC 0.35-um 2P4M CMOS process, and occupies 2.2 mm*2 mm area. Measurement results show that the maximum data rate up to 25kbps. The power consumption of power receiver is 58.17mW. Thirdly, a wireless ultrasound stimulation microsystem with Frequency Shift Keying with Pulse Width Modulation (FSK-PWM) is implementation. This microsystem is also received the ultrasound signal and used it to control stimulator. This proposed wireless ultrasound stimulation microsystem is fabricated in TSMC 0.35-um 2P4M CMOS process, and occupies 2.2 mm*2.2 mm area. Measurement results show that the maximum data rate up to 50kbps. The power consumption of power receiver is 55mW. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25796 |
全文授權: | 未授權 |
顯示於系所單位: | 電子工程學研究所 |
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