Abstract
Bioradar-based noncontact breathing detection technology has been widely studied due to its superior detection performance. In this paper, a breath detection mechanism based on the change in radar cross section (RCS) is proposed by using a forward scatter radar and the deduction of the mathematical model of the received signal. Furthermore, we completed human breathing detection experiments in an anechoic chamber and in an ordinary chamber; we obtained the breathing rate through envelope detection in cases where the human orientation angle was 0, 30, 60, and 90°. The analysis of the measured data shows that the theoretical model fits well with the measured results. Compared with the existing single-base radar detection schemes, the proposed scheme can detect human respiratory rates in different orientations.
Highlights
Respiratory rate is an important index reflecting human physiological states
Microwave-based noncontact detection is irreplaceably advantageous in convenience in comparison with contact respiration detection
We found that the amplitude of the received signal changes with the radar cross section (RCS) change the forward scatter radar (FSR)
Summary
Respiratory rate is an important index reflecting human physiological states. Firstly, whether a life exists or not can be determined by the respiratory state. The radars based on the biological mechanism of chest wall micromotion do not perform well enough without the correct orientation of the antennas and of the test subject. The hardware cost must be brought down, and noise generated from random human motion must be removed In this way, human respiratory rate can be accurately detected with bioradars. Human respiratory rate can be accurately detected with bioradars To solve these problems, we propose a respiratory rate detection scheme by exploiting forward-scatter-based bioradar. We propose a respiratory rate detection scheme by exploiting forward-scatter-based bioradar In this system, the transmitter and receiver are arranged on opposite sides of a person so that their abdomen is placed on the baseline. The reliability of the theoretical model is verified by the experimental data
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
