标题: | 适用于可携式三通道ECG远端照护系统晶片之有效的心跳变异率处理器设计 An Effective Heart Rate Variability Processor Design for Portable 3-Lead ECG Monitoring System-on-Chip |
作者: | 曾少彦 方伟骐 电子研究所 |
关键字: | 心率变异率分析;整合型生医系统;蓝芽传输;可携式系统;ECG;Heart Rate Variability;HRV;Integrated Health-Care System;Bluetooth;Portable System;Digital Signal Processing;Lomb Periodogram |
公开日期: | 2010 |
摘要: | 全球年龄六十五岁以上的人口数量已被预测在2025年之前将回从1990年的3.75亿人成长至7.61亿人。不久,社会将面临老年化社会所带来的医疗照顾问题。因此,整合型健康照护系统已成为研究人员在最近几年的重要课题。本论文提出一可携式整合型心电图监测与分析系统,并包含一心率变异性之时频分析处理器。所提出之主要的系统包括一个资料转换器控制器,一心率变异性的处理器,以及一无损压缩引擎。系统由资料转换器控制器从前端电路获得心电图的数据,并传送至心率变异性分析处理器做时频分析。本论文所提出之心率变异性处理器利用Lomb Periodogram进行心率变异性之时频分析。Lomb Periodogram适合分析非平均取样数据之频谱分析,并已应用于心率变异性时频分析降低误差。在心电数据使用UART输出之前并利用无损压缩引擎将资料以压缩率2.5的比例压缩。利用UART传输介面,本系统可以蓝牙技术等无线传输方式将所分析之心率变异性分析以及原始心电数据传送至远端工作站供显示或进一步分析。本论文所提之系统具有多项操作模式,并且可以透过远端设置。此整合型健康心电照护系统设计使用联华电子90奈米 CMOS技术下线晶片。 The worldwide population of people over the age of 65 has been predicted to more than double from 375 million in 1990 to 761 million by 2025. Soon society will be faced with the problem of providing medical care for an aged population. Therefore, ubiquitous health-care systems have become an important topic of research in recent years. In this thesis, an integrated system for portable electrocardiography (ECG) monitoring with an on-board processor for time-frequency analysis of heart rate variability (HRV) is presented. The main function of the system comprises an analog-to-digital converter (ADC) controller, an HRV processor, and a lossless compression engine. ECG data acquired from front-end circuits through the ADC controller is passed to the HRV processor for HRV analysis. The HRV processor performs real-time analysis of time-frequency HRV using the Lomb periodogram and a sliding window configuration. The Lomb periodogram is suited for spectral analysis of unevenly sampled data and has been applied to time-frequency analysis of HRV in the proposed system. The ECG data is compressed using the lossless compression engine before output using UART and has a compression ratio of 2.5. Bluetooth is used to transmit analyzed HRV data and raw ECG data to a remote station for display or further analysis. The system has many operating modes and can be configured remotely. The integrated ECG health-care system design proposed in this thesis has been implemented using UMC 90nm CMOS technology. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT079711655 http://hdl.handle.net/11536/44355 |
显示于类别: | Thesis |
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