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題名 | 基於混合訊號處理的嵌入式霍特心電圖機設計=A Holter of Low Complexity Design Using Mixed Signal Processor |
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作者 | 謝景棠; 謝廣霖; 洪國銘; 吳家榮; | 書刊名 | 龍華科技大學學報 |
卷期 | 19 民94.09 |
頁次 | 頁119-132 |
分類號 | 410.025 |
關鍵詞 | 霍特心電圖機; FIR數位濾波器; MSP430; SD card; Blue tooth; FIR filter; SmartPhone; Electrocardiogram; ECG; Holter recorder; |
語文 | 中文(Chinese) |
中文摘要 | 本篇論文利用混合訊號處理的方式來製作易於實現的霍特心電圖機。為了即時濾除室內電源信號以及肌肉移動所造成的雜訊,利用Optima method設計了一個FIR等漣波濾波器,並且利用FIR的對稱性,加快2倍濾波的速度及減少2倍的係數儲存量,最後再以MSP430實現FIR濾波器。為了要驗證可行性,利用MIT/BIH資料庫加上60Hz雜訊,並通過FIR濾波器後,能夠還原為原始的心電圖訊號。比較醫院量測的心電圖,本研究的心電圖機較接近醫院所量測的訊號,實驗證明所提的心電圖機製作方式確實能得到較正確的心電圖。最後本研究完成了一個基於混合訊號處理架構的霍特心電圖機,以及利用SD Card與BlueTooth做心電圖儲存與傳輸的媒介,提供一個低成本可商業化的霍特心電圖原型機。 |
英文摘要 | A low powered, portable, and cheap Holter recorder is necessary for patients and researchers of electrocardiogram (ECG). Such a Holter recorder is designed with mixed signal processors in this paper. To decreases the complexity of analog circuits and to diminish 60Hz noise from power line, we use MSP to implement a Finite Impulse Response (FIR) filter which is designed with equiripple method. We also use the input data structure of circular queue and the symmetrical characteristic of the FIR filter for efficiently computing convolution. Experimental results show that the ECG output signal is clear and it can be recorded for 24hr using a SD card in this Hoter recorder. Then, the ECG signal is transmitted with Smartphone via Bluetooth module to decrease the burden of Holter recorders without LCD and keyboard. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。