Non-Contact Detection of Breathing Using a Microwave Sensor
نویسندگان
چکیده
In this paper the use of a continuous-wave microwave sensor as a non-contact tool for quantitative measurement of respiratory tidal volume has been evaluated by experimentation in seventeen healthy volunteers. The sensor working principle is reported and several causes that can affect its response are analyzed. A suitable data processing has been devised able to reject the majority of breath measurements taken under non suitable conditions. Furthermore, a relationship between microwave sensor measurements and volume inspired and expired at quiet breathing (tidal volume) has been found.
منابع مشابه
Detection of napropamide by microwave resonator sensor using carbon nanotube – polypyrrole- chitosan layer
This paper presents the design and fabrication of proximity coupled feed disk resonator coated with Multi Walled Carbon Nanotubes (MWCNTs) and Polypyrrole-Chitosan (PPy-CHI) layers as a napropamide sensor. Computer Simulation Technology (CST) microwave studio was used to obtain the best design of disk resonator and feed line position in 5 GHz resonant frequency. Also, MWCNTs - PPy-CHI layers we...
متن کاملFeasibility Study for Non-Contact Heartbeat Detection at 2.4 GHz and 60 GHz
Two new schemes for human non-invasive cardiopulmonary activity monitoring are demonstrated using microwave low power and non-contact Doppler sensors. The two systems, using direct conversion architecture and simple design, are demonstrated and tested at a distance of 1 m from the patient. The first one proposes a simple technique for direct measurement of heartbeat signal at 2.4 GHz while the ...
متن کاملMovement Detection in Non-los Environment Using Microwave
Microwave can be used as a source to detect any movement behind the barrier and it paves way for many unknown intrusion similar to the movement detection in Line of Sight (LOS) environment by passive infrared sensors. Microwave frequencies can penetrate the barrier to gather information in non LOS environment. However the insight about the situation of a person behind the opaque medium will al...
متن کاملNon-contact breath sensor based on a Doppler detector
Respiratory activity is an important parameter for observation of human body activity. A normal adult has a respiratory rate of 12–15 breaths/min in normal conditions. Breath sensor based on non-contact Doppler detector allows for the measurement and detection and the absence of the breathing action, which may cause death in a few minutes. The monitoring and detection of some respiratory abnorm...
متن کاملMicrowave Doppler Transducer for Contactless Cardiorespiratory Monitoring
One presents the results of a study concerning the use of microwave Doppler transducer for contact-less detection of cardiorespiratory activity. The main element of the installation is a microwave Doppler transducer. The Doppler signal resulting from the movement of the anatomical structures is a complex one. The experimental setup also includes an electrocardiograph, a photopletismograph and a...
متن کامل