Title page for etd-0725115-221152


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URN etd-0725115-221152
Author You-Rung Chou
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 Chest-Worn Health Monitor Based on a Bistatic Self-Injection-Locked Radar
Date of Defense 2015-08-18
Page Count 72
Keyword
  • wireless transmission
  • cardiopulmonary sensor
  • Wearable health monitor
  • acceleration
  • time-frequency spectrogram
  • self-injection-locked (SIL) radar
  • bistatic
  • pedometer
  • Doppler continuous-wave radar
  • Abstract This thesis presents wearable health monitors that are based on continuous-wave Doppler radar technology. To achieve low complexity, low power consumption and simultaneous wireless transmission of Doppler information, the radar architecture is bistatic with a self-injection-locked oscillator (SILO) tag and an injection-locked oscillator (ILO)-based frequency demodulator. In experiments with a prototype that was operated in the Medical Body Area Network (MBAN) and the Industrial Scientific and Medical (ISM) bands from 2.36 to 2.484 GHz, the actuator with a metal plate is used to perform a linear movement with adjustable displacement. First, the SILO tag is attached to the metal and measures the acceleration of actuator from forth to back,then the SILO tag is attached to the chest of a subject to transform the movement of the chest due to cardiopulmonary activity and body exercise into a transmitted frequency modulated wave.The ILO-based frequency demodulator, located 30 cm away from the subject, receives and processes this wave to yield the waveform that is associated with the movement of the chest. Following further digital signal processing, the cardiopulmonary activity and body exercise are displayed as time-frequency spectrograms.Promisingly, the experimental results that are presented in this thesis reveal that the proposed health monitor has high potential to integrate a cardiopulmonary sensor, a pedometer and a wireless transmission device on a single radar platform.
    Advisory Committee
  • Lih-Tyng Hwang - chair
  • Jian-Ming Wu - co-chair
  • Kang-Chun Peng - co-chair
  • Tzyy-Sheng Horng - advisor
  • Files
  • etd-0725115-221152.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2015-08-25

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