Title page for etd-0804115-114000


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URN etd-0804115-114000
Author Da-Cian Wun
Author's Email Address No Public.
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Department Electrical Engineering
Year 2015
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Ipsilateral Dual SIL-Radar System for Vital Sign Detection with Random Body Movement Cancellation
Date of Defense 2015-09-03
Page Count 72
Keyword
  • Doppler radar
  • self-injection-locked radar
  • random body motion cancellation
  • vital sign detection
  • Abstract 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.
    Advisory Committee
  • Sheng-Ful Chang - chair
  • Chao-Hsiung Tseng - co-chair
  • Lih-Tyng Hwang - co-chair
  • Tzyy-Sheng Horng - advisor
  • Files
  • etd-0804115-114000.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2015-09-07

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