具有無線傳輸之戒指型血氧濃度檢測系統

Wireless Transmission System Design for Pulse Oximeter Using Ring Sensor

王瑋成(Wei-Cheng Wang)

指導教授 ： 鍾文耀

中原大學/工學院/電子工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100898

摘要

本論文利用MSP430晶片作為核心，搭配戒指型感測探頭與無線藍芽模組，建構一套具有無線傳輸之戒指型血氧濃度檢測系統，不論是在戶外運動量測或室內醫療監測，皆可利用此裝置，在系統架構設計上，利用MSP430高度模組整合優勢，簡化電路佈局。本論文將LED和光源接收器放置於近端指骨，並探討感測器擺放位置與晃動的影響。
結果顯示，儀器經過校正後，指尖感測血氧飽和度數值均方根運算誤差在1%以下，戒指型感測血氧飽和度數值均方根運算誤差在2%以下。訊號經由有線RS-232與無線藍芽傳輸，電腦端透過LabVIEW接收或LCD面板顯示。
本論文加入時鐘、碼表、運動時間計時以及計步等功能，利用三軸加速度計運算得到的計步量，交給MSP430計算求得步行的里程數與消耗的卡洛里。

關鍵字

血氧濃度 ； 戒指型感測 ； 無線藍芽

並列摘要

In this paper, I apply MSP430 chip as the core, with the ring sensor probe and the wireless Bluetooth module to construct a wireless transmission system for Pulse Oximeter using Ring Sensor. The device can be used on indoor medical monitoring and outdoor activities measuring. The design of the system architecture, using the advantages of MSP430 combine many module in one chip to simplify the circuit layout. Therefore, I placed the LED and the light sensor on the phalanx, then discuss impacts of sensor places and shaking.
After the instrument is calibrated, the results show that the oxygen saturation operational error in the rms is below 1% of the finger sensor. And the oxygen saturation operational error in the rms is below 2% of the ring sensor. Data were transmitted through RS-232 signal line and wireless Bluetooth, then the computer terminal receive the data by the display of LabVIEW or LCD panel.
Furthermore, the study adds the clock, stopwatch, timer in exercise time and pedometer and other functions to the devise. And applying pedometers computed by three-axis accelerometer to the MSP430. Then use the MSP430 to calculate mileage and calories consumed.

並列關鍵字

Bluetooth module ； Oxygen saturation ； Ring sensor

參考文獻

[18]游宗憲,“血氧濃度計之設計於睡眠監測”,崑山科技大學電子碩士論文, Jun.2008.

[38]黃英郎,“新式血氧計之設計與研製”,台灣大學電機工程研究所, Jun.2006.

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[4]C. C. Johnson, “Optical diffusion in blood,” IEEE Transactions on Biomedical Engineering, Vol. 17, 1970, pp. 129-133.