Polymer packaged longitudinal microstructured fiber based distributed pressure sensing system

2016 ◽  
Vol 45 (8) ◽  
pp. 802003 ◽  
Author(s):  
孙琪真 Sun Qizhen ◽  
汪静逸 Wang Jingyi ◽  
张 威 Zhang Wei ◽  
向 阳 Xiang Yang ◽  
艾 凡 Ai Fan ◽  
...  
Keyword(s):  
Microstructured Fiber ◽  
Pressure Sensing ◽  
Sensing System ◽  
Distributed Pressure

scholarly journals Novel Application of a Multiscale Entropy Index as a Sensitive Tool for Detecting Subtle Vascular Abnormalities in the Aged and Diabetic

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Hsien-Tsai Wu ◽  
Men-Tzung Lo ◽  
Guan-Hong Chen ◽  
Cheuk-Kwan Sun ◽  
Jian-Jung Chen
Keyword(s):  
Glycosylated Hemoglobin ◽  
Reactive Hyperemia ◽  
Multiscale Entropy ◽  
Arterial Pulse ◽  
Vascular Changes ◽  
Entropy Index ◽  
Pressure Sensing ◽  
Vascular Abnormalities ◽  
Sensing System ◽  
Sensitive Tool

Although previous studies have shown the successful use of pressure-induced reactive hyperemia as a tool for the assessment of endothelial function, its sensitivity remains questionable. This study aims to investigate the feasibility and sensitivity of a novel multiscale entropy index (MEI) in detecting subtle vascular abnormalities in healthy and diabetic subjects. Basic anthropometric and hemodynamic parameters, serum lipid profiles, and glycosylated hemoglobin levels were recorded. Arterial pulse wave signals were acquired from the wrist with an air pressure sensing system (APSS), followed by MEI and dilatation index (DI) analyses. MEI succeeded in detecting significant differences among the four groups of subjects: healthy young individuals, healthy middle-aged or elderly individuals, well-controlled diabetic individuals, and poorly controlled diabetic individuals. A reduction in multiscale entropy reflected age- and diabetes-related vascular changes and may serve as a more sensitive indicator of subtle vascular abnormalities compared with DI in the setting of diabetes.

scholarly journals LifeChair: A Conductive Fabric Sensor-Based Smart Cushion for Actively Shaping Sitting Posture

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2261 ◽  
Author(s):  
Karlos Ishac ◽  
Kenji Suzuki
Keyword(s):  
Detection Accuracy ◽  
Upright Posture ◽  
Performance Study ◽  
Vibrotactile Feedback ◽  
Pressure Sensing ◽  
Sitting Posture ◽  
Conductive Fabric ◽  
The Past ◽  
Sensing System ◽  
Average Accuracy

The LifeChair is a smart cushion that provides vibrotactile feedback by actively sensing and classifying sitting postures to encourage upright posture and reduce slouching. The key component of the LifeChair is our novel conductive fabric pressure sensing array. Fabric sensors have been explored in the past, but a full sensing solution for embedded real world use has not been proposed. We have designed our system with commercial use in mind, and as a result, it has a high focus on manufacturability, cost-effectiveness and adaptiveness. We demonstrate the performance of our fabric sensing system by installing it into the LifeChair and comparing its posture detection accuracy with our previous study that implemented a conventional flexible printed PCB-sensing system. In this study, it is shown that the LifeChair can detect all 11 postures across 20 participants with an improved average accuracy of 98.1%, and it demonstrates significantly lower variance when interfacing with different users. We also conduct a performance study with 10 participants to evaluate the effectiveness of the LifeChair device in improving upright posture and reducing slouching. Our performance study demonstrates that the LifeChair is effective in encouraging users to sit upright with an increase of 68.1% in time spent seated upright when vibrotactile feedback is activated.

scholarly journals Flexible Distributed Pressure Sensing Strip for a Urethral Catheter

2015 ◽  
Vol 24 (6) ◽  
pp. 1840-1847 ◽  
Author(s):  
Mahdi Ahmadi ◽  
Rajesh Rajamani ◽  
Gerald Timm ◽  
A. Serdar Sezen
Keyword(s):  
Urethral Catheter ◽  
Pressure Sensing ◽  
Distributed Pressure

High-sensitivity dynamic distributed pressure sensing with frequency-scanning φ-OTDR

2021 ◽  
Author(s):  
Liqiang Qiu ◽  
Dexin Ba ◽  
Dengwang Zhou ◽  
Qi Chu ◽  
Zongda Zhu ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Pressure Sensing ◽  
Frequency Scanning ◽  
Distributed Pressure

Implementation of Distributed Polarization Maintaining Fiber Polarization Coupling Pressure Sensing System

2010 ◽  
Vol 37 (6) ◽  
pp. 1467-1472 ◽  
Author(s):  
陈信伟 Chen Xinwei ◽  
张红霞 Zhang Hongxia ◽  
贾大功 Jia Dagong ◽  
刘铁根 Liu Tiegen ◽  
张以谟 Zhang Yimo
Keyword(s):  
Pressure Sensing ◽  
Sensing System ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

scholarly journals Fully distributed pressure sensing with ultra-high-sensitivity using side-hole fibers

2018 ◽  
Author(s):  
Li Zhang ◽  
Zhisheng Yang ◽  
Łukasz Szostkiewicz ◽  
Krzysztof Markiewicz ◽  
Tomasz Nasilowski ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Pressure Sensing ◽  
Side Hole ◽  
Distributed Pressure
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