Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention

Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention

A body pressure relief system was newly developed with optical pressure sensors for pressure ulcer prevention. Unlike a conventional alternating pressure air mattress (APAM), this system automatically regulates air flow into a body supporting mattress with adaptive inflation (or deflation) duration...

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Bibliographic Details
Main Authors: Kang-Ho Lee, Yeong-Eun Kwon, Hyukjin Lee, Yongkoo Lee, Joonho Seo, Ohwon Kwon, Shin-Won Kang, Dongkyu Lee
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Sensors
Subjects:
body pressure distribution
air-filled cell
alternating pressure air mattress
time of flight
air flow
active control system
Online Access:https://www.mdpi.com/1424-8220/19/18/3862
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spelling doaj-fd86fea86344485b8efc2a2b2b446c2f2020-11-25T01:17:23ZengMDPI AGSensors1424-82202019-09-011918386210.3390/s19183862s19183862Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer PreventionKang-Ho Lee0Yeong-Eun Kwon1Hyukjin Lee2Yongkoo Lee3Joonho Seo4Ohwon Kwon5Shin-Won Kang6Dongkyu Lee7Daegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaSchool of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, KoreaDaegu Research Center for Medical Devices, Korea institute of Machinery and Materials, Daegu 42994, KoreaA body pressure relief system was newly developed with optical pressure sensors for pressure ulcer prevention. Unlike a conventional alternating pressure air mattress (APAM), this system automatically regulates air flow into a body supporting mattress with adaptive inflation (or deflation) duration in response to the pressure level in order to reduce skin stress due to prolonged high pressures. The system continuously quantifies the body pressure distribution using time-of-flight (ToF) optical sensors. The proposed pressure sensor, a ToF optical sensor in the air-filled cell, measures changes in surface height of mattress when pressed under body weight, thereby indirectly indicating the interface pressure. Non-contact measurement of optical sensor usually improves the durability and repeatability of the system. The pressure sensor was successfully identified the 4 different-predefined postures, and quantitatively measured the body pressure distribution of them. Duty cycle of switches in solenoid valves was adjusted to 0−50% for pressure relief, which shows that the interface pressure was lower than 32 mmHg for pressure ulcer prevention.https://www.mdpi.com/1424-8220/19/18/3862body pressure distributionair-filled cellalternating pressure air mattresstime of flightair flowactive control system
collection DOAJ
language English
format Article
sources DOAJ
author Kang-Ho Lee
Yeong-Eun Kwon
Hyukjin Lee
Yongkoo Lee
Joonho Seo
Ohwon Kwon
Shin-Won Kang
Dongkyu Lee
spellingShingle Kang-Ho Lee
Yeong-Eun Kwon
Hyukjin Lee
Yongkoo Lee
Joonho Seo
Ohwon Kwon
Shin-Won Kang
Dongkyu Lee
Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
Sensors
body pressure distribution
air-filled cell
alternating pressure air mattress
time of flight
air flow
active control system
author_facet Kang-Ho Lee
Yeong-Eun Kwon
Hyukjin Lee
Yongkoo Lee
Joonho Seo
Ohwon Kwon
Shin-Won Kang
Dongkyu Lee
author_sort Kang-Ho Lee
title Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
title_short Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
title_full Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
title_fullStr Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
title_full_unstemmed Active Body Pressure Relief System with Time-of-Flight Optical Pressure Sensors for Pressure Ulcer Prevention
title_sort active body pressure relief system with time-of-flight optical pressure sensors for pressure ulcer prevention
publisher MDPI AG
series Sensors
issn 1424-8220
publishDate 2019-09-01
description A body pressure relief system was newly developed with optical pressure sensors for pressure ulcer prevention. Unlike a conventional alternating pressure air mattress (APAM), this system automatically regulates air flow into a body supporting mattress with adaptive inflation (or deflation) duration in response to the pressure level in order to reduce skin stress due to prolonged high pressures. The system continuously quantifies the body pressure distribution using time-of-flight (ToF) optical sensors. The proposed pressure sensor, a ToF optical sensor in the air-filled cell, measures changes in surface height of mattress when pressed under body weight, thereby indirectly indicating the interface pressure. Non-contact measurement of optical sensor usually improves the durability and repeatability of the system. The pressure sensor was successfully identified the 4 different-predefined postures, and quantitatively measured the body pressure distribution of them. Duty cycle of switches in solenoid valves was adjusted to 0−50% for pressure relief, which shows that the interface pressure was lower than 32 mmHg for pressure ulcer prevention.
topic body pressure distribution
air-filled cell
alternating pressure air mattress
time of flight
air flow
active control system
url https://www.mdpi.com/1424-8220/19/18/3862
work_keys_str_mv AT kangholee activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT yeongeunkwon activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT hyukjinlee activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT yongkoolee activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT joonhoseo activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT ohwonkwon activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT shinwonkang activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
AT dongkyulee activebodypressurereliefsystemwithtimeofflightopticalpressuresensorsforpressureulcerprevention
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