Key result
Non-contact cardiopulmonary sensing using simple Doppler radars accurately measured heart and respiration rates, with a maximum difference of 1.6 bpm for heart rate versus reference.
Why the study?
Can simple Doppler radars operating in CW mode accurately detect cardiopulmonary signals at a distance?
Can simple Doppler radars operating in CW mode accurately detect cardiopulmonary signals at a distance?
Non-contact cardiopulmonary sensing using simple Doppler radars in CW mode is feasible and accurate for measuring heart and respiration rates.
May support remote vital sign monitoring; leaves open prospective clinical validation.
Cardiopulmonary signals can be detected at a distance using simple Doppler radars operating in CW mode. Tests with and without audio modulation show the feasibility of measurements with this hardware, providing a maximum measured difference to the reference of just 1.6bpm for heart rate. Tests show good correspondence of heart/respiration rate with the reference data.
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Hafner et al. (2007) studied this question. Non-contact cardiopulmonary sensing using simple Doppler radars accurately measured heart and respiration rates, with a maximum difference of 1.6 bpm for heart rate versus reference.
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