Technical Name Digital self-injection-locked ultrasonic Doppler radar for accurate non-contact vital sign monitoring
Project Operator National Sun Yat-Sen University
Project Host 洪子聖
Summary A highly sensitive and linear ultrasonic radar was realized using digital self-injection-locking (SIL) technique. It can remotely monitor the vital signs of a human in motion, which will be demonstrated in this expo by upgrading a low-cost ultrasonic radar for reverse parking to support high-value telemedical applications. In the future it will further combine phased-array technology to implement non-contact 4D ultrasound system, which will bring disruptive innovation to medical technologies.
Technical Film
Scientific Breakthrough The present self-injection-locked (SIL) radars use the centimeter-wave signal because it must operate under the condition that the range of physical or physiological movements is much less than the wavelength to avoid the nonlinear distortion phenomenon. This invention resolves the nonlinear distortion problem by digitalizing the SIL mechanism and has been successfully applied to the SIL radar using a millimeter ultrasonic wave. The breakthroughs are:1) The SIL mechanism was digitalized for the first time to make Doppler sensing technology no longer limited by the signal wavelength.2) The all-digital Doppler radar was realized for the first time for non-contact monitoring of vital signs.3) The ultrasonic radar was realized for the first time for non-contact monitoring of vital signs.
Industrial Applicability The embodiment of this invention implements an ultrasonic Doppler radar using digital self-injection-locking (SIL) technique to remotely monitor the vital signs of a human in motion. The invention can be now used in medical and healthcare industries for the vital sign monitoring, life detection, and medical ultrasound applications. In the future, the invention will combine phased-array technology to realize a 4D ultrasound system that can observe the interior of the human body without contact.
Keyword Self-injection-locked radar Digital Doppler radar Non-contact vital sign monitor Life detector Biomedical radar Digital ultrasonic radar Medical Doppler ultrasound system 4D ultrasound Pandemic prevention Healthcare
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