Chinese scientists have developed a radio wave scanner that can detect the heart’s electrical activity from a distance, making remote monitoring of vital signs possible for the first time.
In their new study, the scientists explained how they used a millimetre wave radar to detect the movements of the heart and transform that information into electrical signals. This contactless ECG system could help in the daily monitoring of certain heart diseases, the team said. They first separated the readings coming from other parts of the body, eliminated motion interference such as from breathing, fine-tuned the signals from cardiac movement and suppressed ambient noise, before finally extracting the data.
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