scholarly journals Towards Human Stress and Activity Recognition: A Review and a First Approach Based on Low-Cost Wearables

Electronics ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 155
Author(s):  
Juan Antonio Castro-García ◽  
Alberto Jesús Molina-Cantero ◽  
Isabel María Gómez-González ◽  
Sergio Lafuente-Arroyo ◽  
Manuel Merino-Monge
Keyword(s):  
Electrodermal Activity ◽  
Low Cost ◽  
Physiological Signals ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Battery Lifetime ◽  
Open Hardware ◽  
Custom Made ◽  
Human Stress

Detecting stress when performing physical activities is an interesting field that has received relatively little research interest to date. In this paper, we took a first step towards redressing this, through a comprehensive review and the design of a low-cost body area network (BAN) made of a set of wearables that allow physiological signals and human movements to be captured simultaneously. We used four different wearables: OpenBCI and three other open-hardware custom-made designs that communicate via bluetooth low energy (BLE) to an external computer—following the edge-computingconcept—hosting applications for data synchronization and storage. We obtained a large number of physiological signals (electroencephalography (EEG), electrocardiography (ECG), breathing rate (BR), electrodermal activity (EDA), and skin temperature (ST)) with which we analyzed internal states in general, but with a focus on stress. The findings show the reliability and feasibility of the proposed body area network (BAN) according to battery lifetime (greater than 15 h), packet loss rate (0% for our custom-made designs), and signal quality (signal-noise ratio (SNR) of 9.8 dB for the ECG circuit, and 61.6 dB for the EDA). Moreover, we conducted a preliminary experiment to gauge the main ECG features for stress detection during rest.

Revelation of Body Behavior Based on Arm Motion Measurement in Wireless Body Area Network System

2016 ◽  
Vol 833 ◽  
pp. 179-184
Author(s):  
Nur Alia Athirah Mohtadzar ◽  
Shigeru Takayama
Keyword(s):  
Low Cost ◽  
Wearable Sensors ◽  
Wireless Body Area Network ◽  
Healthcare Systems ◽  
Body Area Network ◽  
Network System ◽  
Area Network ◽  
Body Area ◽  
Arm Motion ◽  
Fitness Training

Wireless Body Area Network or known as BAN, is a system consists of various kinds of wearable sensors to measure condition of human body. Wrist, waist and shoulder modules from BAN system can help to monitor, analyze and provide advice to the user in order to perform a moderate exercise. The availability of small, low-cost networked sensors combined with advanced signal processing and information extraction is driving a revolution in physiological monitoring and intervention. BAN system is enabling technologies for accurate measurements in healthcare systems, enhance sports and fitness training, life-style monitoring and individualized security.

Simplified human phantoms for narrowband and ultra-wideband body area network modelling

2015 ◽  
Vol 34 (2) ◽  
pp. 439-447 ◽  
Author(s):  
Łukasz Januszkiewicz ◽  
Sławomir Hausman
Keyword(s):  
Research And Development ◽  
Low Cost ◽  
Path Loss ◽  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Network Modelling ◽  
Content Type ◽  
Human Body Models

Purpose – The purpose of this paper is to compare the properties of simplified physical and corresponding numerical human body models (phantoms) and verify their applicability to path loss modeling in narrowband and ultra-wideband on-body wireless body area networks (WBANs). One of the models has been proposed by the authors. Design/methodology/approach – Two simplified numerical and two physical phantoms for body area network on-body channel computer simulation and field measurement results are presented and compared. Findings – Computer simulations and measurements which were carried out for the proposed simplified six-cylinder model with various antenna locations lead to the general conclusion that the proposed phantom can be successfully used for experimental investigation and testing of on-body WBANs both in ISM and UWB IEEE 802.15.6 frequency bands. Research limitations/implications – Usage of the proposed phantoms for the simulation/measurement of the specific absorption rate and for off-body channels are not within the scope of this paper. Practical implications – The proposed simplified phantom can be easily made with a low cost in other laboratories and be used both for research and development of WBAN technologies. The model is most suitable for wearable antenna radiation pattern simulation and measurement. Social implications – Presented results facilitate applications of WBANs in medicine and health monitoring. Originality/value – A new six-cylinder phantom has been proposed. The proposed simplified phantom can be easily made with a low cost in other laboratories and be used both for research and development of WBAN technologies.

scholarly journals Efficient energy for one node and multi-nodes of wireless body area network

2022 ◽  
Vol 12 (1) ◽  
pp. 914
Author(s):  
Sondous Sulaiman Wali ◽  
Mohammed Najm Abdullah
Keyword(s):  
Health System ◽  
Ieee 802.15.4 ◽  
Low Cost ◽  
Wireless Body Area Network ◽  
Body Area Network ◽  
Area Network ◽  
Structural Factors ◽  
Body Area ◽  
Efficient Energy ◽  
Compression Sensing

<span>Compression sensing approaches have been used extensively with the idea of overcoming the limitations of traditional sampling theory and applying the concept of pressure during the sensing procedure. Great efforts have been made to develop methods that would allow data to be sampled in compressed form using a much smaller number of samples. Wireless body area networks (WBANs) have been developed by researchers through the creation of the network and the use of miniature equipment. Small structural factors, low power consumption, scalable data rates from kilobits per second to megabits per second, low cost, simple hardware deployment, and low processing power are needed to hold the wireless sensor through lightweight, implantable, and sharing communication tools wireless body area network. Thus, the proposed system provides a brief idea of the use of WBAN using IEEE 802.15.4 with compression sensing technologies. To build a health system that helps people maintain their health without going to the hospital and get more efficient energy through compression sensing, more efficient energy is obtained and thus helps the sensor battery last longer, and finally, the proposed health system will be more efficient energy, less energy-consuming, less expensive and more throughput.</span>

Super Ultrawideband Planar Inverted F Antenna on Paper based Substrate with Low SAR

2019 ◽  
Vol 17 (2) ◽  
pp. 204-213
Author(s):  
Sakshi Kumari ◽  
Vibha Rani Gupta
Keyword(s):  
Low Cost ◽  
Wireless Body Area Network ◽  
Cavity Resonator ◽  
Impedance Bandwidth ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Transmission Line Method ◽  
Measured Impedance ◽  
Almost All

In this paper, a super ultrawide band planar inverted F antenna (PIFA) has been proposed for wearable applications on a low cost, ecofriendly paper-based substrate. This work is a first and important step towards the progression of conformal flexible antennas for a body area network. The proposed antenna has measured impedance bandwidth of 10.6 GHz, which covers almost all the bands of a wireless body area network i.e. GSM (880-960 MHz), GPS (1565-1585 MHz), DCS (1710-1880 MHz), PCS (1850-1990 MHz), UMTS (1920-2170 MHz), ISM (2.4-2.4835 GHz), WiMAX (3.3-3.8 GHz), HIPERLAN (5.15-5.35 GHz), WLAN (5.725-5.850 GHz) and UWB (3.1-10.6 GHz). Initially, the electrical characteristics of paper are extracted using Cavity Resonator and Transmission line method and then used for the design and fabrication of the proposed antenna. The measured results are in good agreement with the simulated results. This paper also focuses on analysis of the effect of electromagnetic absorption in terms of specific absorption rate for a human arm with frequency exposure at 0.9 GHz, 1.5 GHz, 1.8 GHz, 3.5 GHz, 2.45 GHz, 5.2 GHz and 5.8 GHz and is found to be within the recommended limit by FCC.

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