Society demands higher standards of care and safety
Smart biomedical products are the future
Application areas
Contactless vital life sign (VLS) measurement ideal for:
What are the popular VLS solutions?
Heart beat monitoring
- Pulse Oximeter
- ECG electrodes
- Vibrometry (laser Doppler vibrometry)
- Smart watch
Heart beat and respiration monitoring
- Ultrasound
- Radar (UWB and CW) – works through clothes and blankets!
- Smart phone medical apps (using LED and camera)
What are the issues with contact based VLS solutions?
- Skin irritation: allergic reaction to sensor material/adhesive
- Not suitable for burn victims and premature babies
- Monitoring heart beat only
- ECG requires trained personnel and very careful setup!
- Inaccurate readings when subject moves or sensor has poor contact with the ski
Pulse Oximeter
- Low cost solution, used heavily for home monitoring
- Ambient light degrades performance (finger must be matched to fit the detection area and block out ambient light)
- EMI interference and movement also affect performance
Our State-of-the-art UWB (ultrawide band)
pulse doppler radar sensor
What can we measure?
Our accurate measurement results on a human in bed
Typical VLS data captured from a UWB radar – containing both heart beat and respiration information
Notice how slow the biomedical signal is!
Heart beat (HB) and respiration rate (RR) estimation algorithm
Algorithm’s HB estimate is accurate to ±1 bpm
of the Pulse Oximeter’s estimate!