Fiber-optic based wearables for the continuous monitoring of respiratory rate

2021 ◽  
Author(s):  
Aizhan Issatayeva ◽  
Aidana Beisenova ◽  
Daniele Tosi ◽  
Carlo Molardi
Keyword(s):  
Respiratory Rate ◽  
Continuous Monitoring ◽  
Fiber Optic

Multipoint Fiber-Optic Hot-Spot Sensing Network Integrated Into High Power Transformer for Continuous Monitoring

2008 ◽  
Vol 8 (7) ◽  
pp. 1264-1267 ◽  
Author(s):  
A. B. Lobo Ribeiro ◽  
N. F. Eira ◽  
J. M. Sousa ◽  
P. T. Guerreiro ◽  
J. R. Salcedo
Keyword(s):  
High Power ◽  
Continuous Monitoring ◽  
Fiber Optic ◽  
Power Transformer ◽  
Hot Spot

Application of Brillouin Fiber Optic Sensors to Monitor Pipeline Integrity

2004 ◽  
Author(s):  
R. C. Tennyson ◽  
W. D. Morison ◽  
B. Colpitts ◽  
A. Brown
Keyword(s):  
Optical Fibers ◽  
Continuous Monitoring ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Third Party ◽  
Ground Movement ◽  
Temperature Profiles ◽  
Thermal Anomalies ◽  
Temperature Distributions ◽  
Close Proximity

This paper describes the application of Brillouin fiber optic sensors to monitor pipeline integrity in terms of third party intrusion, leak detection, and ground movement. Brillouin sensors provide a means for continuous monitoring of strain and temperature distributions over distances of about 25km. The optical fibers can be bonded to the pipeline or buried in close proximity to the pipe. Third party intrusion is detected by strain anomalies caused by vehicles or persons in close proximity to the sensor located at some depth below the surface. Leaks from oil or gas pipelines are detected by thermal anomalies in the temperature profiles. Pipeline movement can also be detected using this system for existing and new pipeline installations. Applications include northern pipelines, high consequence areas, river crossings and fault lines.

AFORS - Autonomous Fiber Optic Rotational Seismograph as a System for Continuous Monitoring the Rotational Seismic Events

2014 ◽  
Vol 909 ◽  
pp. 444-449 ◽  
Author(s):  
Leszek R. Jaroszewicz ◽  
Zbigniew Krajewski ◽  
Jerzy K. Kowalski ◽  
Anna Kurzych ◽  
Zbigniew Raszewski
Keyword(s):  
Direct Measurement ◽  
Continuous Monitoring ◽  
Fiber Optic ◽  
The Internet ◽  
Seismic Events ◽  
Processing Unit ◽  
Rotational Components ◽  
Telemetric System ◽  
Seismological Observatory ◽  
Seismic Rotation

We outline the development and application of the Autonomous Fibre-Optic Rotational Seismograph (AFORS), which utilizes the Sagnac effect for a direct measurement of seismic rotation. The main advantage of AFORS is it complete insensitivity to linear motions as well as a direct measurement of rotational components emitted during seismic events. The presented system contains a special autonomous signal processing unit which optimizes its operation for the measurement of rotation motions, whereas applied telemetric system based on the Internet allows for a remote AFORS control. The laboratory investigation of the two such devices indicated they keep accuracy no less than 5.1·10-9to 5.5·10-8rad/s in the frequency bandpass from 0.83 Hz to 106.15 Hz with protect linear changes of sensitivity in above bandpass. The experimental results of AFORS-1 application for continuous monitoring the rotational events in the Książ (Poland) seismological observatory are also presented.

scholarly journals Continuous monitoring in COVID-19 care; a retrospective study in time of crisis

JAMIA Open ◽  
2021 ◽  
Author(s):  
Roy de Ree ◽  
Jorn Willemsen ◽  
Gilbert te Grotenhuis ◽  
Rick de Ree ◽  
Joé Kolkert ◽  
...  
Keyword(s):  
Adverse Events ◽  
Respiratory Rate ◽  
Nursing Staff ◽  
Early Warning ◽  
Wireless Sensors ◽  
Continuous Monitoring ◽  
Vital Signs ◽  
Early Warning Score ◽  
Monitoring Systems ◽  
Patients At Risk

Abstract Background A new monitoring system was implemented to support nursing staff and physicians on the COVID-19 ward. This system was designed to remotely monitor vital signs, to calculate an automated Early Warning Score (aEWS) and to help identify patients at risk of deterioration. Methods Hospitalized patients who tested positive for SARS-CoV-2 were connected to two wireless sensors measuring vital signs. Patients were divided into two groups based on the occurrence of adverse events during hospitalization. Heart and respiratory rate were monitored continuously and an automated EWS was calculated every 5 minutes. Data were compared between groups. Results Prior to the occurrence of adverse events, significantly higher median heart and respiration rate and significantly lower median SPO2 values were observed. Mean and median automated EWS were significantly higher in patients with an adverse event. Conclusion Continuous monitoring systems might help to detect clinical deterioration in COVID-19 patients at an earlier stage. Lay Summary A new monitoring system was implemented to support nursing staff and physicians on the COVID-19 ward. This system was designed to remotely monitor vital signs, like respiratory rate, heart rate and the oxygen level in the blood. These parameters were used to calculate an automated early warning score which helps to identify patients at risk of deterioration. Hospitalized patients who tested positive for SARS-CoV-2 were connected to two wireless sensors. Heart and respiratory rate were monitored continuously and an automated EWS was calculated every 5 minutes. Data were compared between patients at the COVID-19 ward and patients who were transported to the ICU or died. COVID patients at the ICU or those who died had significantly higher median heart and respiration rate and significantly lower median oxygen levels. These findings showed that continuous monitoring systems might help to detect clinical deterioration in COVID-19 patients at an earlier stage.

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