Non-contact human vital sign measurement method and device
A vital sign and non-contact technology, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve the problem that vital signs are easily affected by the environment
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Embodiment 1
[0058] Embodiments of the present invention provide a non-contact method for measuring human vital signs, such as figure 1 shown, including:
[0059] Transmitting chirp continuous wave modulated millimeter waves to the human body that needs to measure vital signs;
[0060] Process the acquired echo signal reflected by the human body to obtain the intermediate frequency signal s 1 (t);
[0061] the intermediate frequency signal s according to the preset acquisition frequency 1 (t) Sampling to obtain a discrete signal s 1 (n);
[0062] Spectrum analysis and target detection are performed on the discrete signals, and breathing and heartbeat signals are extracted and separated to obtain breathing and heartbeat frequencies.
[0063] The present invention irradiates the human body with electromagnetic waves, collects echo signals containing physiological characteristic information such as human respiration and heartbeat, and utilizes the relationship between human body micro-mo...
Embodiment 2
[0091] The embodiment of the present invention also provides a non-contact human vital signs measurement device, which is implemented based on the above-mentioned non-contact human vital signs measurement method, including:
[0092] The transmitting module is used to transmit the millimeter wave modulated by the linear frequency modulation continuous wave to the human body that needs to measure the vital signs;
[0093] The receiving module is used to process the obtained echo signal reflected by the human body to obtain the intermediate frequency signal s 1 (t);
[0094] A sampling module, configured to perform the intermediate frequency signal s according to a preset sampling frequency 1 (t) Sampling to obtain a discrete signal s 1 (n);
[0095] The frequency acquisition module is used to perform frequency spectrum analysis and target detection on the discrete signals, extract and separate the breathing and heartbeat signals, so as to acquire the breathing and heartbeat f...
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