Human breathing and heartbeat sensors

A sensor for remote measurement and control of human breathing and heart beat parameters in medicine or high-risk work.

Actual bioengineering problem is research and development of radar remote sensing of small displacements of biological structures, such as: motion activity, breathing, heartbeat and arterial vessels. Bioradar, in simple terms, may be imagined as a small displacements sensor sensitive to reflected target deflections towards receiving antenna.

Modulation of the radio signal reflected from a man, is resulted from heartbeat, by fluctuations of arterial vessels, lung, other innards. One can select several groups of biomechanical motions that differ both in frequency and range of the amplitude:

• contraction (of the heart ventricles muscle) /frequency range is 0.8 ... 2.5 Hz, breast amplitude Is 0.1 mm/;

• human breast fluctuations, when breathing (frequency range is 0,2. 0,5 Hz, breast amplitude depending on the type of breathing Is 0.5 .. 1.5 cm);

• movement in other parts of the human body (arms, legs, etc.).

The most promising application fields of the above sensor are:

• remote measurement of respiration and heart rate of people for whom (burn patients, babies) using of contact sensors in resuscitation and functional diagnostics is unacceptable;

• remote registration of movements, respiration and heart rate during preclinical researches to detect respiratory and/or sleep disorders in somnology and also for creation of «clever alarm clock», defining sleeping phases and the moment for most suitable awakening point;

• monitoring of physiological status of human operator, performing responsible work required continuative attention.