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Study on a non-contact life parameter detection system using millimeter wave.

Jian-qi Wang1, Chong-xun Zheng, Xi-jing Jin

  • 1Biomedical Engineering Research Institute, Xi'an Jiaotong University, Shanxi Xi'an. wangjq@fmmu.edu.cn

Hang Tian Yi Xue Yu Yi Xue Gong Cheng = Space Medicine & Medical Engineering
|June 1, 2005
PubMed
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This study presents a non-contact life detection system using 36 GHz millimeter wave radar. The system effectively detects heartbeat and respiration through clothing and quilts up to 3 meters, offering a safe monitoring solution.

Area of Science:

  • Biomedical Engineering
  • Radar Technology
  • Physiological Monitoring

Background:

  • Non-contact vital sign monitoring is crucial for various applications, including space exploration.
  • Millimeter wave technology offers potential for sensitive, non-invasive physiological detection.

Purpose of the Study:

  • To investigate the principles and design of a 36 GHz millimeter wave non-contact life detection system.
  • To assess the system's capability in detecting human heartbeat and respiration signals.

Main Methods:

  • Utilized continuous wave radar techniques.
  • Employed signal processing methods: zero intermediate frequency, frequency domain accumulation, and adaptive noise cancellation.

Main Results:

Related Experiment Videos

  • Successfully detected heartbeat and respiration signals from human subjects.
  • Detection was effective through common clothing and quilts up to a 3-meter range.
  • Operated with a radiated power of approximately 1 milliwatt (mW).

    • Conclusions:

    • The developed system is feasible and effective for non-contact vital sign monitoring.
    • Demonstrated high detection sensitivity, small antenna size, and simple structure.
    • Suitable for long-term continuous monitoring, particularly for astronauts, due to its safety and miniaturization potential.