本文選題：功能電刺激 + 運(yùn)算跨導(dǎo)放大器　； 參考：《東南大學(xué)》2017年碩士論文

【摘要】：相關(guān)數(shù)據(jù)顯示,我國(guó)有2000多萬(wàn)各類肢體截癱患者,其中有200多萬(wàn)因脊髓損傷導(dǎo)致的截癱或四肢癱瘓患者�；颊呱钭岳砟芰κ芟奚踔羻适�,嚴(yán)重影響了生活質(zhì)量。采用微電子技術(shù)和神經(jīng)系統(tǒng)理論相結(jié)合的方法,采集正常人體四肢的體表肌電(Surface Electromyographic,SEMG)信號(hào),對(duì)癱瘓肢體進(jìn)行功能電刺激,從而實(shí)現(xiàn)癱瘓肢體協(xié)調(diào)和運(yùn)動(dòng)功能重建的目標(biāo)。體表肌電信號(hào)的采集與放大對(duì)于整個(gè)神經(jīng)信號(hào)探測(cè)前端來(lái)說(shuō)非常重要。本論文主要研究體表肌電信號(hào)放大器電路的設(shè)計(jì)。本設(shè)計(jì)采用兩級(jí)濾波器級(jí)聯(lián)的結(jié)構(gòu),將噪聲與信號(hào)擺幅分開(kāi)考慮,使用基于gm/id的設(shè)計(jì)方法分別設(shè)計(jì)兩級(jí)運(yùn)算跨導(dǎo)放大器(Operational Transconductance Amplifier,OTA),采用有源晶體管來(lái)實(shí)現(xiàn)大阻值的反饋電阻,從而實(shí)現(xiàn)選頻功能。將充當(dāng)有源電阻的晶體管的柵極電壓?jiǎn)为?dú)引出,調(diào)節(jié)此電壓可以控制電阻值以確保精確選頻。整個(gè)設(shè)計(jì)采用TSMC0.18μmCMOS工藝,供電電壓為1.8V,根據(jù)后仿結(jié)果顯示,整個(gè)肌電信號(hào)放大器增益為60dB,可以實(shí)現(xiàn)50～1500HZ的選頻,靜態(tài)功耗為7.2μW,在50-1000HZ的頻帶內(nèi),積分噪聲為2.03μVrms,電壓輸出擺幅達(dá)到±0.92V,噪聲效率因子(Noise Efficiency Factor,NEF)為 4.86。整個(gè)芯片尺寸為 2mm×3mm。根據(jù)仿真結(jié)果,肌電信號(hào)放大器能夠有效地探測(cè)并放大微弱的體表肌電信號(hào),為接下來(lái)信號(hào)的數(shù)字化處理和傳遞打下了良好的基礎(chǔ),也為從分立元器件設(shè)計(jì)轉(zhuǎn)向微電子化設(shè)計(jì)積累了經(jīng)驗(yàn)。
[Abstract]:The related data show that there are about 20000000 kinds of limb paraplegia in our country, of which about 2000000 of the patients with paraplegia or limb paralysis caused by spinal cord injury. The patient's self-care ability is limited or even lost, which seriously affects the quality of life. A combination of microelectronics and neural system theory is used to collect the body surface of the normal body. Surface Electromyographic (SEMG) signals are used to perform functional electrical stimulation of paralyzed limbs to achieve the objective of paralyzed limb coordination and movement function reconstruction. The acquisition and amplification of the body surface EMG signal is very important for the whole nerve signal detection front end. This paper mainly studies the design of the body surface EMG signal amplifier circuit. The design adopts a cascade of two stage filter, which divides the noise from the signal swing separately. Using the gm/id based design method, the two level operational transconductance amplifier (Operational Transconductance Amplifier, OTA) is designed respectively. The active transistor is used to realize the feedback resistance of the large blocking value, thus the frequency selection function is realized. The gate voltage of the resistive transistor is extracted separately, adjusting this voltage to control the resistance value to ensure accurate frequency selection. The whole design uses TSMC0.18 micron mCMOS technology and the power supply voltage is 1.8V. According to the post simulation results, the whole EMG amplifier gain is 60dB, which can achieve 50 to 1500HZ frequency selection, static power consumption is 7.2 u W, 50-1000HZ In the frequency band, the integral noise is 2.03 mu Vrms, the voltage output swing is + 0.92V, the noise efficiency factor (Noise Efficiency Factor, NEF) is 4.86. whole chip size 2mm * 3mm. based on the simulation results. The EMG signal amplifier can effectively detect and amplify the weak body surface muscle electrical signal, for the digital processing and transmission of the next signal. It has laid a good foundation, and has accumulated experience for the design of discrete components to microelectronics.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN722

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 謝書(shū)珊;王志功;呂曉迎;沈曉燕;黃宗浩;潘海仙;;神經(jīng)信號(hào)再生專用微電子系統(tǒng)的設(shè)計(jì)[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年06期

2 陳恒江;劉明峰;郭良權(quán);王成;;一種高增益帶寬CMOS全差分運(yùn)算放大器的設(shè)計(jì)[J];微電子學(xué);2009年02期

3 周勝海;郭淑紅;;基于低噪聲運(yùn)放的傳感器前置放大器設(shè)計(jì)[J];儀表技術(shù)與傳感器;2006年09期

4 朱小珍;朱樟明;柴常春;;一種高速CMOS全差分運(yùn)算放大器[J];半導(dǎo)體技術(shù);2006年04期

5 呂英俊,楊雪;生物電前置放大器研究與設(shè)計(jì)[J];儀器儀表學(xué)報(bào);2005年S2期

6 李建中,湯小虎,魏同立;一種低電壓CMOS折疊-共源共柵跨導(dǎo)運(yùn)算放大器的設(shè)計(jì)[J];微電子學(xué);2005年04期

相關(guān)碩士學(xué)位論文 前1條

1 何紅松;CMOS高性能運(yùn)算放大器研究與設(shè)計(jì)[D];復(fù)旦大學(xué);2009年

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