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標題: | 應用於低功耗之能源採集電路結合單晶片系統 Energy Harvesting Circuits with SoC System for Low-Power Applications |
作者: | Chun-Chang Wu 吳浚彰 |
指導教授: | 呂學士 |
關鍵字: | 系統單晶片、心電訊號、擷能電路、溫差發電、感測器、太陽能電池, system on a chip (SoC)、electrocardiography、energy harvesting circuit、thermoelectric generator (TEG)、sensors、 photovoltaic cell, |
出版年 : | 2017 |
學位: | 博士 |
摘要: | 能源已成為現今社會不論在學術界和工業界上的一個新興課題。因此,能量採集(擷能)和低功耗設計已經成為下一個世代技術發展的重要課題。為了解決這一需求,本篇論文設計、實現和驗證了低功耗電路架構和太陽能電池能量採集電路。
首先,本篇論文提出了一個針對偵測心律不整並結合擷取體溫產電的可攜式Electrocardiography (ECG)監測系統,該系統具有完整的系統單晶片(System on a Chip, SoC),內含數位與類比電路以及能源擷取電路。晶片部分利用台積電 0.18 μm 製程技術實現了整合CMOS ECG監測與擷取溫差而產電之晶片系統,並使用了生物相容的parylene進行封裝,再用Near Field Communication (NFC)技術將量測到的ECG資訊傳送到使用者端,若使用者有心律不整的情況發生,將會及時收到警告資訊。 另外本論文另外提出了第一個由室內光驅動且可同時監測多種室內環境因子(溫、濕與二氧化碳)的傳輸平台。該平台整合了自製有機材料感測器、MSP430微處理器、完整的統單晶片(System on a Chip, SoC)以及傳輸部分(MTK Linkit One 以及Electro-Phoretic Display, EPD)。晶片部分由台積電的0.35 μm CMOS製程技術實現,並使用了低功耗的class AB放大器電路架構來放大感測器感測到的室內環境資訊,再透過10 bit SAR ADC將訊號轉換成數位。同時,系統內使用power-gating技術將每一個電路區塊做定時開啟與關閉,傳輸部分分為有線與無線兩種,無線傳輸可將資料傳送至雲端,而另外亦可以電子紙有線呈現。如此一來,整體系統平均功耗為3.2 μW,實現在室內光下達成永續使用的目標。 Energy has become an emerging issue at both academia and industries in modern society. As a consequence, energy harvesting and low-power consumption have become important topics in developments for next-generation technologies. To address this unmet need, in this thesis, both low-power circuit architectures and solar-cell energy harvesting circuit are designed, implemented, and validated. In this thesis, first, we presents a portable Electrocardiography (ECG) monitoring system to detect the arrhythmia and capture body temperature. This system has a complete system-on-chip (SoC) circuit and a temperature-based energy harvesting circuit. To implement the proposed circuits, TSMC 0.18 μm process technology is employed. The implemented chip includes CMOS ECG signal process element, temperature-based energy harvesting circuit, a biocompatible parylene package, and a near field communication (NFC) wireless transceiver to deliver the measured signal to a user console. The developed wireless low-power ECG monitoring SoC can send out a warning message if the user has a situation of arrhythmia. In addition, this thesis also presents an indoor environmental monitoring platform driven by solar-cells. The monitoring environmental factors include temperature, humidity and carbon dioxide. The developed platform integrates homemade organic material sensors, a MSP430 microprocessor, an analog front-end, a wireless transmission unit (MTK Linkit One), and Electro-Phoretic Display (EPD). This thesis focus in developing the system-on-chip (SoC) chip for the platform. The chip is implemented by TSMC 0.35 μm CMOS process technology. In brief, the chip uses a low-power class AB amplifier circuit architecture to amplify the sensing signals of indoor environment information. It also uses a 10-bit SAR ADC to convert the sensor signal into digital information for following signal processes. At the same time, the SoC also employs a power-gating technology to schedule operations of every circuit block to achieve the required low-power consumption. The obtained environmental information can be either wirelessly or wired transmitted to the cloud for further processes. Utilizing the developed SoC chip, the first demonstrated, the overall system average power consumption is 3.2 μW to achieve an indoor environmental monitoring driven by indoor dim light condition. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20298 |
DOI: | 10.6342/NTU201704406 |
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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