嵌入式系統應用在心電訊號(ECG)模擬和心電與腦電訊號(EEG)量測

Using embedded systems to simulate ECG signals and measure EEG & ECG signals

黃聖文(Sheng-Wen Huang)

指導教授 ： 謝建興

元智大學/工程學院/機械工程學系/碩士(2008年)

https://doi.org/10.6838/YZU.2008.00115

摘要

一般來說，嵌入式系統（Embedded System）是在一些大型系統內，由硬體和軟體所構成的一個元件，處理一些不需由人們來操作且特定的一些功能，達到客制化(Customize)的要求，大多是著重在電腦基礎系統(Computer-baesd-system)的應用程式或產品。目前許多的電子與通訊用品皆與嵌入式系統息息相關，因此，生理訊號擷取分析，醫療儀器輔具開發應用等器材設備更缺少不了嵌入式系統。
本篇論文以嵌入式微控制器為系統核心應用在心電訊號(ECG)的模擬和心電與腦電訊號(EEG)的量測。將嵌入式系統結合生理放大器擷取腦電訊號EEG(Electroencephalography)傳送至電腦儲存分析，改善傳統式腦波機龐大、移動不便的缺點，降低硬體設計成本，以輕量、節電、體積小等優勢取代，提高抓取頻率與精度維持訊號完整性。
另一方面，以嵌入式系統模擬產生各種心電訊號ECG (Electrocardiography)，製作病人模擬器，以實際動態波形訓練新進醫學院學生認知，並幫助設計量測生理訊號的硬體電路校正，代替直接量測人體，並搭配高階多功能生理訊號監視器(Datex-Ohmeda S/5 & Philips MP60)進行驗證，提升硬體的可信度，進行實驗分析結果比對。經由Similarity分析理論的實驗結果統計，整體的相似程度均與原始訊號差異不大，且生理監視器都可接收量測，顯示出波形的正確性。

關鍵字

嵌入式系統 ； 客制化 ； 電腦基礎系統 ； 腦電訊號 ； 心電訊號

並列摘要

The embedded system was a component made up by hardware and software. People used its special function to deal with unusual requests and customized their products. Most of them focused on computer-based system applications like electrical appliances and communications. So, we used embedded systems to capture bio-signals and develop medical instruments.
This paper was used the embedded microcontroller acted as a platform which was applied to simulate ECG signals and measure EEG & ECG signals. So, we combined microcontroller with amplifier to catch EEG & ECG signals and saved them into the computer for being analyzed. Most important of all, we improved tradition ECG & EEG device defects and cost down the hardware price to make it more convenient, more lightweight, and more economical.
In the other hand, we integrated microcontroller with D/A chip to develop patients simulator which could simulate different kinds of ECG signals. Besides, we corrected our device by using patient monitors and tested analysis via similarity theory to improve our hardware reality. Finally, our ECG signals were similar to original ECG signals and could be detected by patient monitor to show our waveform correctly.

並列關鍵字

Embedded system ； customize ； computer-based system ； ECG ； EEG.

參考文獻

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