Vital sign monitoring system for detecting multiple vital signs of multiple persons in a scene and method thereof

A method for detecting multiple vital signs of multiple persons in a scene, comprising:

• transmitting radar signals toward the scene and receiving reflected signals corresponding to the multiple persons by a radar transceiver;
• and
• by a processor, executing steps comprising:
• processing the reflected signals to obtain phase signals corresponding to the multiple persons;
• applying wavelet transformation on the phase signals using adjustable wavelet parameters to generate, for each of the multiple persons, a respiration rate signal and a heartbeat rate signal;
• processing the heartbeat rate signal of each of the multiple persons using a biometric model to generate a blood pressure signal of the person;
• and
• estimating, for each of the multiple persons, a respiration rate value, a heartbeat rate value, and a blood pressure value based on the respiration rate signal, the heartbeat rate signal, and the blood pressure signal of the person, respectively.

A vital sign monitoring system for detecting multiple vital signs of multiple persons in a scene, comprising:

• a radar transceiver, configured to transmit radar signals toward the scene and receive reflected signals corresponding to the multiple persons;
• a processor;
• and
• a storage unit, coupled to the processor, and configured to store a computer program comprising instructions that, when executed by the processor, causes the processor to:
• process the reflected signals to obtain phase signals corresponding to the multiple persons, and to apply wavelet transformation on the phase signals using adjustable wavelet parameters to generate, for each of the multiple persons, a respiration rate signal and a heartbeat rate signal;
• process the heartbeat rate signal of each of the multiple persons using a biometric model to determine a blood pressure signal of the person;
• and
• estimate, for each of the multiple persons, a respiration rate value, a heartbeat rate value, and a blood pressure value based on the respiration rate signal, the heartbeat rate signal, and the blood pressure signal of the person, respectively.