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A simple optical fiber interferometer based breathing sensor

Xixi Li, Dejun Liu, Rahul Kumar, Wai Pang Ng, Yong-qing Fu, Jinhui Yuan, Chongxiu Yu, Yufeng Wu, Guorui Zhou, Gerald Farrell, Yuliya Semenova, Qiang Wu
2017 Measurement science and technology  
A breathing sensor has been experimentally demonstrated based on a singlemode-multimodesinglemode (SMS) fiber structure which is attached to a thin plastic film in an oxygen mask.  ...  The sensor can be used in a strong electric/magnetic field and radioactive testing systems such as magnetic resonance imaging (MRI) systems and computed tomography (CT) examinations where electrical sensors  ...  By monitoring the light power variation rate, the breathing rate can be measured.  ... 
doi:10.1088/1361-6501/aa577d fatcat:bkzrh3id7jdypedd3fler5xica

Metrological Characterization for Vital Sign Detection by a Bioradar

Giovanni Cerasuolo, Orsola Petrella, Luigi Marciano, Francesco Soldovieri, Gianluca Gennarelli
2017 Remote Sensing  
In space missions, during the long isolation at extreme conditions for human health, it is of paramount importance to monitor vital parameters. One such parameter is the breathing rate.  ...  By measuring of the phase shift between the incident and reflected wave, it is possible to detect and monitor the respiratory rate.  ...  Frequency Range RMS Electric Field (V/m) RMS Magnetic Field (A/m) Irradiance (W/m Figure 3 . 3 Electric field profile.  ... 
doi:10.3390/rs9100996 fatcat:inlcf3wsrbctfigt4me4mmuwra

Monitoring Apnea in the Elderly by an Electromechanical System with a Carbon Nanotube-based Sensor

Hung-Chang Liu, Yu-Jen Chen, Ying-Chen Lu, Chien-Liang Wu, Wen-Chieh Huang, Jung-Tang Huang
2013 International Journal of Gerontology  
usefulness for detecting abnormal breathing rates, especially apnea.  ...  An effective breathing sensor for real-time detection of apnea is important in clinical critical care.  ...  Based on these aspects, in the present study we designed a testing platform with an MWCNT-based sensor through an integrated technology to measure breathing performance for elderly care.  ... 
doi:10.1016/j.ijge.2013.01.004 fatcat:pxvgc4ejo5ds3gef2gizq32gna

Respiratory Monitoring by a Field Ionization Sensor Based on Trichel Pulses

Fucheng Deng, Lingyun Ye, Kaichen Song
2014 Sensors  
The method is based on Trichel pulses (TPs) using a simple field ionization sensor which consists of a needle electrode and a plate electrode.  ...  Experiments have been conducted to demonstrate that different respiratory patterns, including normal, ultra-fast, deep breaths, and apnea could be easily monitored in real time by detecting the changes  ...  In this paper, we propose a method of respiratory monitoring by field ionization sensor based on Trichel pulses (TPs).  ... 
doi:10.3390/s140610381 pmid:24926694 pmcid:PMC4118392 fatcat:3wtii4ddsncsvbfwrvjlwvtbte

Air-Flow-Driven Triboelectric Nanogenerators for Self-Powered Real-Time Respiratory Monitoring

Meng Wang, Jiahao Zhang, Yingjie Tang, Jun Li, Baosen Zhang, Erjun Liang, Yanchao Mao, Xudong Wang
2018 ACS Nano  
air flow rate of 120 L/min (AVI When a person stops breathing for more than 5 s, an alarm was wirelessly triggered through the respiratory monitoring and alert system (AVI) When a person stops breathing  ...  This TENG can generate distinct real-time electric signals when exposed to the air flow from different breath behaviors.  ...  In this system, the TENG could send an electric signal in response to different breath patterns without any additional power source.  ... 
doi:10.1021/acsnano.8b02562 pmid:29847095 pmcid:PMC6279609 fatcat:4afuclxifvg3nkxfwxb46652nq

A miniature optical breathing sensor

Jinesh Mathew, Yuliya Semenova, Gerald Farrell
2012 Biomedical Optics Express  
We demonstrate a novel miniature optical breathing sensor based on an Agarose infiltrated photonic crystal fiber interferometer.  ...  The sensor interrogation system can determine the breathing pattern in real time and can also predict the breathing rate and the breathing status during respiration.  ...  or high electric/magnetic fields.  ... 
doi:10.1364/boe.3.003325 pmid:23243581 pmcid:PMC3521315 fatcat:ndqlb3nnlbcbvfwmtyrugep5ce

E-Health Alert System Using Breathing Gestures (Breath Print) Classifying

Suhair Zaki
2020 International Journal of Medical Sciences  
Method: In this paper proposed an alert system for the E-Health purposes is presented which is based the using of patient breathing signal.  ...  Electronic Health is an emerging field in the intersection of medical informatics, public health and business, referring to health services and information delivered or enhanced through the Internet and  ...  Breath Print, a new behavioral biometric signature based on audio features derived from an individual's commonplace breathing gestures.  ... 
doi:10.32441/aajms.3.2.7 fatcat:djmfo3fl3nhologq26gpsc45ua

A breath sensor using carbon nanotubes operated by field effects of polarization and ionization

Xiaohang Chen, Yanyan Wang, Yuhua Wang, Zhongyu Hou, Dong Xu, Zhi Yang, Yafei Zhang
2010 Sensors and Actuators A-Physical  
These unique results ensure this MBS can be successfully employed to real-time monitoring of human breath.  ...  A novel microfabricated breath sensor (MBS) based on multi-walled carbon nanotubes (MWNTs) has been presented and tested. It has a simple structure of two nickel beams incorporating with MWNTs.  ...  Under the external AC source, electric field between the electrodes is greatly enhanced by the strong field convergence of the MWNTs tips [19] .  ... 
doi:10.1016/j.sna.2010.01.021 fatcat:jew6lftd6zdwrobnhbkph6ip34

Contact-Based Methods for Measuring Respiratory Rate

Carlo Massaroni, Andrea Nicolò, Daniela Lo Presti, Massimo Sacchetti, Sergio Silvestri, Emiliano Schena
2019 Sensors  
The present paper provides an overview of the currently available contact-based methods for measuring respiratory rate.  ...  There are different methods for measuring respiratory rate, which can be classed as contact-based or contactless.  ...  Intensity-based FOSs have been proposed for breathing pattern monitoring [62, [68] [69] [70] .  ... 
doi:10.3390/s19040908 fatcat:rd4huewo6bg23ndvmqrgqxbjpa

Medical Smart Textiles Based on Fiber Optic Technology: An Overview

Carlo Massaroni, Paola Saccomandi, Emiliano Schena
2015 Journal of Functional Biomaterials  
At the same time, the use of fiber optic sensors (FOSs) is gaining large acceptance as an alternative to traditional electrical and mechanical sensors for the monitoring of thermal and mechanical parameters  ...  In this review we provide an overview of the state-of-the-art of textiles, which use FOSs for monitoring of mechanical parameters of physiological interest.  ...  They tested the system on 11 volunteers during an MRI procedure, showing an accuracy of two breaths per minute for respiratory rate monitoring, and two beats per minute for heart rate monitoring.  ... 
doi:10.3390/jfb6020204 pmid:25871010 pmcid:PMC4493508 fatcat:l6wk343jfrgjlltksyrv62qr6i

Non-Contact Vital Signs Monitoring of Dog and Cat Using a UWB Radar

Wang, Ma, Liang, Zhang, Yu, Li, An, Lv, Wang
2020 Animals  
Keywords: cat; dog; vital signs monitoring; radar; ultra-wideband (UWB); variational mode decomposition (VMD)  ...  The electrical and magnetic fields, E and H fields, could be calculated from the power density.  ...  The experimental results demonstrated that the approach could meet the needs of monitoring pet breathing, and it also had the potential for the animal's heart rate monitoring.  ... 
doi:10.3390/ani10020205 pmid:31991803 pmcid:PMC7070589 fatcat:fyjqg4a3yvbwxm6fr24iw2uqoi

N on - Invasive Feto - Maternal Well - Being Monitoring: A Review of Methods

Abdullah Bin Queyam, Department of Instrume nt ation and Control Engineering, Dr. B. R. Ambedkar National Institute of Technology Jalandhar, India, Sharvan Kumar Pahuja, Dilbag Singh, Department of Instrume nt ation and Control Engineering, Dr. B. R. Ambedkar National Institute of Technology Jalandhar, India, Department of Instrume nt ation and Control Engineering, Dr. B. R. Ambedkar National Institute of Technology Jalandhar, India
2017 Journal of Engineering Science and Technology Review  
count, fetal heart rate, maternal ECG acquired from both chest and abdomen region, uterine contraction, blood SpO2 concentration, amniotic fluid pH etc.  ...  Monitoring of fetal and maternal well-being is extremely critical during pregnancy and during labor to reduce the occurrence of fetal and maternal distress in high risk pregnancies.  ...  Impedance Measurement Electrical impedance based instruments can be used for non-invasive continuous recording and monitoring of inside electrical field distribution of closed objects in terms of voltage  ... 
doi:10.25103/jestr.101.25 fatcat:tmdlgxspenhihkocuuwaq5aip4

Non-Invasive Fiber Optic Probe Encapsulated Into PolyDiMethylSiloxane for Measuring Respiratory and Heart Rate of the Human Body

Jan Nedoma, Macel Fajkus, Petr Siska, Radek Martinek, Vladimir Vasinek
2017 Advances in Electrical and Electronic Engineering  
This article describes the design and the functional verification of fiber optic system with an innovative non-invasive measuring probe for monitoring respiratory and heart rate.  ...  The measurement is based on sensing the movements of the thoracic cavity of the patient during breathing. Movement (mechanical stress) is transferred to FBG using the contact strip.  ...  The methodology of the test was based on sensing a minute measurement of breath and heart rate with a sampling frequency of 300 Hz at five tested people.  ... 
doi:10.15598/aeee.v15i1.1923 fatcat:ibbwilgegvcs3hjfs7a4ykkciq

Non-Invasive Fiber-Optic Biomedical Sensor for Basic Vital Sign Monitoring

Jan Nedoma, Marcel Fajkus, Radek Martinek, Vladimir Vasinek
2017 Advances in Electrical and Electronic Engineering  
The integrated sensor is based on two Fiber Bragg Gratings (FBGs) encapsulated inside an inert polymer (non-reactive to human skin) called PolyDiMethylSiloxane (PDMS).  ...  This article focuses on the functionality verification of a novel non-invasive fibre-optic sensor monitoring basic vital signs such as Respiratory Rate (RR), Heart Rate (HR) and Body Temperature (BT).  ...  The experimental results reported in article [6] describe an FBG-based sensor prototype designed for monitoring the respiratory rate.  ... 
doi:10.15598/aeee.v15i2.2131 fatcat:ehzzhwodlfdinio7xsbskdbu2u

A Carbon-Nanotube Resistive Respiratory Sensor by using Dielectrophoresis Technique

Yi-Chung Lan, Shu-Wei Tung, Yao-Joe Yang
2011 Procedia Engineering  
With an external AC electric field, the dielectrophoresis force acting on CNT can be described by [9] : (1) where is the gradient of the square of electric field, is the permittivity of the suspending  ...  As the electric field is applied, the MWCNTs rotate to align with the external field direction by dielectrophoresis force, and then MWCNTs are attracted to the region of high field intensity [8] .  ... 
doi:10.1016/j.proeng.2011.12.213 fatcat:uxn6x5wavjbbzkv5x4igii27gm
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