本論文在研究雙自我注入鎖定雷達系統，目的在改善生理訊號感測領域目前之重大議題，即隨機身體移動對生理訊號感測之干擾，利用同側雙自我注入鎖定雷達系統之雙注入路徑達到180°相位差，來滿足隨機身體移動抵銷條件並測得呼吸、心跳等生理資訊。透過本論文中的系統架構、實驗方法與步驟，逐一進行實驗觀察與調整，首先利用金屬板作為受測目標進行隨機晃動，再將系統調整為對稱路徑架構並利用相位移器使得雙自我注入路徑相位差達180°，在金屬板晃動情況下與單一自我注入鎖定雷達架構相較下能有效抵銷所造成的都卜勒相移。然後再進行實際人體實驗，並能在身體隨機晃動下測得呼吸及心跳資訊。本論文實驗架構除了能在受測者一般隨機晃動情況下達到抵銷條件而量測到呼吸及心跳訊號外，對於受測者運動後的休息狀態也能在隨機身體移動情況下量測到頻率升高之呼吸及心跳訊號。

This thesis studies a vital-sign detection system based on a dual self-injection-locked (SIL) radar to resolve the interference due to random body motion, which is one of the challenging issues in this field. The system creates the 180 degrees phase difference between the two different paths in the dual SIL radar to achieve the random body motion cancellation condition in detecting vital signs such as respiration and heart rates. The system architecture and experimental setup are constructed through a step-by-step procedure. Firstly, a random object motion is generated by shaking a metal plate. Secondly, the phase shifter is tuned to cancel the Doppler shift caused by the motion of the object under a well-balanced system architecture. Finally, the dual SIL radar is used to detect vital signs under random body motion with comparison to the signal SIL radar. Only the dual SIL radar can successfully detect the normal and high respiration and heart rates of a human before and after exercise, respectively, with random body motion.

論文審定書 i
誌謝 ii
摘要 iv
Abstract v
目錄 vi
圖次 viii
表次 xii
第一章 緒論 1
1.1 研究背景與動機 1
1.2 現有生理訊號感測技術 6
1.3 論文章節規劃 10
第二章 同側雙雷達架構之移動抵銷機制 11
2.1 注入鎖定理論 11
2.2 正交頻率解調 14
2.3 系統架構與移動抵銷步驟 15
2.3.1 單一壓控振盪器之對照組雷達架構 18
2.3.2 移動抵銷條件之雙雷達架構 21
2.3.3 雙天線之雙雷達架構 24
第三章 隨機身體移動抵銷之生理訊號偵測實驗 31
3.1 實驗進行方式 31
3.1.1 單一壓控振盪器之對照組雷達系統 31
3.1.2 移動抵銷條件之雙雷達系統 35
3.2 實驗變因探討 40
3.2.1 天線擺設方式 40
3.2.2 受測者運動後之生理訊號感測 50
第四章 結論 54
參考文獻 55

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