題名: Implementation of Feedback Control for the Optimal Ventilation Device based on the WOB Index
作者: 葉信樟;劉康楝;林賢龍
貢獻者: 逢甲大學自動控制工程研究所 Department of Automatic Control Engineering Feng Chia University
關鍵詞: 最佳化送氣裝置;呼吸控制模擬器;呼吸功;回授控制;Ventilation Device;Human Respiratory Control Simulator;WOB;Feedback Control
日期: 2003-09-13
上傳時間: 2009-12-09T05:24:54Z 出版者: 臺中健康暨管理學院
摘要: 使用呼吸器作機械通氣的目的，主要在幫助病人滿足其呼吸生理上之需求。本研究中 的「最佳化送氣裝置」回授控制，則是在維持病患生理上之條件外，進一步期能達到 呼吸耗能最小化的需求，使接受機械通氣之病患以最省力的方式來呼吸。首先以先前 的研究為基礎，利用人體呼吸控制模擬器模擬出的最佳化氣流變化波形，並透過擷 取卡來控制並驅動送氣裝置，藉由壓力與流量感測器，將所量測的通氣訊號傳入單 晶片中，藉由RS232 傳輸線將訊號回授給模擬器中。整個系統透過 LabVIEW?來監 控病人的動態呼吸機械特性及機械通氣時之呼吸功，利用呼吸功的指標來建立送氣 裝置的最小耗能回授，違成即時控制之機制。
The work of the present paper is to implement a feedback system which can help the patients not only to satisfy his physiology requirement, but also to achieve minimum work of breathing (WOB). The Human
Respiratory Control Simulator was utilized to control and drive the ventilation device through a PCI-6024E card. The signals were measured by flow and pressure sensors and were transmitted into a PIC16F877 chip for further processing. The collected signals will then be feedback to the simulator to compute the resultant respiratory mechanics and WOB index. Once it was found that the patient’s respiratory physiology has significant change, the decision will be made to invoke the
optimization process for further control strategy. The minimal WOB cost to the patient with mechanical ventilation and the real-time control were hence fulfilled based on the implemented feedback control mechanism.
