Remote Cardiac Monitoring Using Radar PDF Download
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Author: Jonathan S. Burnham
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
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Book Description
Recording a patient's vital signs without physical contact is a challenging research problem with applications in medicine, search and rescue, and security. In order to study this problem, an ultra wide band (UWB) pulse radar and a fixed-frequency amplitude based radar were constructed and evaluated. The UWB radar was not reliable and did not produce repeatable results, but the fixed-frequency radar successfully recorded heartbeat signatures from twelve human subjects at a distance of 0.5 - 3 meters. The effects of several variables on the results were analyzed. Two experiments conducted to determine the physiological source of the radar amplitude modulations suggest that the modulation is from chest movement, not electrically induced impedance changes.
Author: Jonathan S. Burnham
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
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Book Description
Recording a patient's vital signs without physical contact is a challenging research problem with applications in medicine, search and rescue, and security. In order to study this problem, an ultra wide band (UWB) pulse radar and a fixed-frequency amplitude based radar were constructed and evaluated. The UWB radar was not reliable and did not produce repeatable results, but the fixed-frequency radar successfully recorded heartbeat signatures from twelve human subjects at a distance of 0.5 - 3 meters. The effects of several variables on the results were analyzed. Two experiments conducted to determine the physiological source of the radar amplitude modulations suggest that the modulation is from chest movement, not electrically induced impedance changes.
Author: Danilo Mandic
Publisher: Springer Science & Business Media
ISBN: 0387743677
Category : Technology & Engineering
Languages : en
Pages : 335
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Book Description
This book brings together the latest research achievements from signal processing and related disciplines, consolidating existing and proposed directions in DSP-based knowledge extraction and information fusion. The book includes contributions presenting both novel algorithms and existing applications, emphasizing on-line processing of real-world data. Readers discover applications that solve biomedical, industrial, and environmental problems.
Author: IEEE Staff
Publisher:
ISBN: 9781665424707
Category :
Languages : en
Pages :
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Book Description
International workshop MTTW is essential part of IEEE Latvia section activities devoted to annual celebration of IEEE day in the beginning of October Topics of the interest include general topics, such as RF signal modulation and demodulation, amplification, electronic and optical circuits, signal processing, networking, antennas, channel characterization as well as advanced and new topics, such as cognitive radio, sensor networks, massive multiple input multiple output (MIMO) and microwave photonics This event is major scientific event of recently established IEEE Latvia Section COM MTT AP Joint chapter Broad promotional activities are planned as free of charge registration and hosting of the event in RTU largest Latvian technical university will attract many young professionals and researchers
Author: Songjie Bi
Publisher:
ISBN: 9780438290716
Category :
Languages : en
Pages :
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Book Description
In recent years, radar technology has been utilized extensively in human health monitoring applications. The outstanding sensitivity and reliability enable vital-sign detecting radar to monitor sub-centimeter motions that represent the human physiological indicators such as heart rate and respiration rate. Compared with conventional cardiac health monitoring techniques such as Electrocardiography (ECG) and ultrasound imaging, radar monitoring is advantageous in the sense that it doesn’t need electrodes and gel. In this dissertation, contact radar based cardiac monitor technique was investigated. Mathematical calculation and simulations in Computer Simulation Technology (CST) Studio Suite were performed to evaluate the Electromagnetic (EM) wave propagation properties in human thorax. The attenuation rate was found to increase exponentially as the frequency of EM wave increases. This phenomenon limits the practical radar frequency to be at most 3GHz. Besides, a wide-band pulsed radar and a Doppler radar were designed and tested on human subjects. It showed decent accuracy in heart rate detection. The quadrature demodulation architecture of radar circuit is indispensable to recover the actual motion pattern of the target. Additionally, it investigated the dependence of radar output on the sensor’s position and antenna polarization. Further efforts were devoted to improving Doppler radar accuracy. A multi-arc method for improving Doppler radar motion measurement was proposed and implemented. By inserting a phase shifter in the transmitter front end, the arc shape on the constellation plot can be phase-shifted to various angles. It eliminates the errors of DC offset estimation by combining all the arc information. Moreover, a Coupling-Cancellation-Antenna scheme was proposed and implemented to further enhance accuracy by minimizing the antennacoupling. Future work includes several interesting topics, including radar detection of two targetsmotion, radar imaging of human thorax, classification of heartbeat waveform based on machine learning technology.
Author: Wenjin Wang
Publisher: Academic Press
ISBN: 0128222824
Category : Computers
Languages : en
Pages : 364
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Book Description
Vital signs, such as heart rate and respiration rate, are useful to health monitoring because they can provide important physiological insights for medical diagnosis and well-being management. Most traditional methods for measuring vital signs require a person to wear biomedical devices, such as a capnometer, a pulse oximeter, or an electrocardiogram sensor. These contact-based technologies are inconvenient, cumbersome, and uncomfortable to use. There is a compelling need for technologies that enable contact-free, easily deployable, and long-term monitoring of vital signs for healthcare. Contactless Vital Signs Monitoring presents a systematic and in-depth review on the principles, methodologies, and opportunities of using different wavelengths of an electromagnetic spectrum to measure vital signs from the human face and body contactlessly. The volume brings together pioneering researchers active in the field to report the latest progress made, in an intensive and structured way. It also presents various healthcare applications using camera and radio frequency-based monitoring, from clinical care to home care, to sport training and automotive, such as patient/neonatal monitoring in intensive care units, general wards, emergency department triage, MR/CT cardiac and respiratory gating, sleep centers, baby/elderly care, fitness cardio training, driver monitoring in automotive settings, and more. This book will be an important educational source for biomedical researchers, AI healthcare researchers, computer vision researchers, wireless-sensing researchers, doctors/clinicians, physicians/psychologists, and medical equipment manufacturers. Includes various contactless vital signs monitoring techniques, such as optical-based, radar-based, WiFi-based, RFID-based, and acoustic-based methods. Presents a thorough introduction to the measurement principles, methodologies, healthcare applications, hardware set-ups, and systems for contactless measurement of vital signs using camera or RF sensors. Presents the opportunities for the fusion of camera and RF sensors for contactless vital signs monitoring and healthcare.
Author: Mostafa Alizadeh
Publisher:
ISBN:
Category : Continuous wave radar
Languages : en
Pages : 102
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Book Description
A vision on the migration from contact standard health monitoring measurement devices to non-contact measurement technologies has gained a tremendous attention in literature and in industry. A promising method for realizing the remote measurement of vital signs is using electromagnetic radars such as frequency modulated continuous wave (FMCW) radars. However, using these radars has challenges to precisely acquire the respiration and heart rates. A solution for higher accurate measurement of the vital signs can be the use of mm-wave frequencies, which gives a high-resolution sensing of displacements in an environment in the order of sub-mm changes. On the other hand, being in mm-wave bands increases both hardware and signal processing designs and implementations. In this work, a mm-wave radar is used to monitor the breathing and the heart rates as well as their waveforms for further clinical diagnostics. To that end, we established a complete analysis of the FMCW radars principles by considering hardware impairments. The analysis considers the effect of antenna coupling, RF cross-talk, stationary clutters, phase noise, IQ imbalances, and the thermal noise. Also, the effect of the individual hardware imperfections on the phase quality is shown by simulations and experiments. The simulations are carried out with a Matlab Simulink model. For the experiments, Texas Instruments (TI) mm-wave FMCW radars have been used. To earn insight into vital signs monitoring, different experiments are designed. In the experiments, the effect of the thermal instability of the RF parts on the phase is shown. In addition, to mimic the behaviour of the chest vibration due to respiration and the heartbeats, a two-pendulum system is designed and tested. Particularly, the pendulum system performance in terms of vibration frequency estimations of the two pendulums versus distance is then measured. In the simulations, the system performance is obtained for different signal to noise ratios (SNR) and different phase noise levels, as well as different stationary clutters. Finally, to test the TI sensors for different directions to the subjects, Hexoskin smart garment is used as a reference sensor, which is a reliable commercial product. Our results show great system improvement in terms of accuracy of the vital signs detection in comparison to other similar research. For different sleep positions, the accuracy of HR and BR are greater than 94\% and 96\%, respectively. In addition to detecting the vital rates, we have shown that their waveforms can also be reconstructed by using an adaptive optimum filter.
Author: Alessandro Leone
Publisher: Springer
ISBN: 3030059219
Category : Technology & Engineering
Languages : en
Pages : 549
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Book Description
This book documents the state of the art in the field of ambient assisted living (AAL), highlighting the impressive potential of novel methodologies and technologies to enhance well-being and promote active ageing. The coverage is wide ranging, with sections on care models and algorithms, enabling technologies and assistive solutions, elderly people monitoring, home rehabilitation, ICT solutions for AAL, living with chronic conditions, robotic assistance for the elderly, sensing technologies for AAL, and smart housing. The book comprises a selection of the best papers presented at the 9th Italian Forum on Ambient Assisted Living (ForitAAL 2018), which was held in Lecce, Italy, in July 2018 and brought together end users, technology teams, and policy makers to develop a consensus on how to improve provision for elderly and impaired people. Readers will find that the expert contributions offer clear insights into the ways in which the most recent exciting advances may be expected to assist in addressing the needs of the elderly and those with chronic conditions.
Author: Olga Boric-Lubecke
Publisher: John Wiley & Sons
ISBN: 1119078423
Category : Science
Languages : en
Pages : 303
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Book Description
Presents a comprehensive description of the theory and practical implementation of Doppler radar-based physiological monitoring This book includes an overview of current physiological monitoring techniques and explains the fundamental technology used in remote non-contact monitoring methods. Basic radio wave propagation and radar principles are introduced along with the fundamentals of physiological motion and measurement. Specific design and implementation considerations for physiological monitoring radar systems are then discussed in detail. The authors address current research and commercial development of Doppler radar based physiological monitoring for healthcare and other applications. Explains pros and cons of different Doppler radar architectures, including CW, FMCW, and pulsed Doppler radar Discusses nonlinear demodulation methods, explaining dc offset, dc information, center tracking, and demodulation enabled by dc cancellation Reviews advanced system architectures that address issues of dc offset, spectrum folding, motion interference, and range resolution Covers Doppler radar physiological measurements demonstrated to date, from basic cardiopulmonary rate extractions to more involved volume assessments Doppler Radar Physiological Sensing serves as a fundamental reference for radar, biomedical, and microwave engineers as well as healthcare professionals interested in remote physiological monitoring methods.
Author: Moeness Amin
Publisher: CRC Press
ISBN: 1498782000
Category : Technology & Engineering
Languages : en
Pages : 390
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Book Description
This book aims to capture recent advances and breakthroughs in in-home radar monitoring of human motions and activities. It addresses three key attributes of radar for in-door human monitoring, namely: motion classification including fall, detection of vital signs, and categorization of human gait for risk assessment and progression of physical impairments and disabilities. It explores recent developments in radar technology for human monitoring inside homes and residences. The reader will learn enhanced detection and classification techniques of radar signals associated with human micro- and macro-motions. Furthermore, the book includes examples using real data collected from healthy individuals, patients, and retirement communities based on the subject Doppler and range information, and using different single and multi-antenna radar system configurations. Results are also presented using modeled data based on biomechanics and kinematics. Indoor monitoring is further demonstrated using alternative technologies of infrared sensors and RF signals of opportunities.
Author: Boris Escalante
Publisher: BoD – Books on Demand
ISBN: 9535106511
Category : Technology & Engineering
Languages : en
Pages : 532
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Book Description
Nowadays it is hard to find areas of human activity and development that have not profited from or contributed to remote sensing. Natural, physical and social activities find in remote sensing a common ground for interaction and development. This book intends to show the reader how remote sensing impacts other areas of science, technology, and human activity, by displaying a selected number of high quality contributions dealing with different remote sensing applications.
