Humidity control of an incubator using the microcontroller-based active humidifier system employing an ultrasonic nebulizer

Güler, İnan; Burunkaya, Mustafa

doi:10.1080/03091900110115478

Cited by 18 publications

(6 citation statements)

References 2 publications

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“…If heat loss is not prevented and is allowed to continue, the baby will develop hypothermia and is at increased risk of developing health problems and of death. Therefore an infant incubator is necessary which attempts to create the necessary environment for the baby's survival [4]. This device may include an ac-powered heater, a fan to circulate the warmed air, a container for water to add humidity, a control valve for oxygen supply and access ports for nursing care.…”

Section: Introductionmentioning

confidence: 99%

Design of an Enhanced Temperature Control System for Neonatal Incubator

2013

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Worldwide every year over 4 million infants die within a month of birth. Of this number, 3.9 million belong to the developing world. Some (25%) of this deaths are caused due to complications of prematurity, most often due to improper heat regulation, water loss and neonatal jaundice. An infant incubator provides stable levels of temperature, relative humidity and oxygen concentration. Temperature control system is the most important part of a baby incubator which has to be maintained around 37°C. In the present work we have designed and developed an enhanced temperature control system incorporating a combination of Pulse Width Modulation (PWM) and simple ON-OFF control system, where thermistors have been used as temperature sensors. The range of variation of temperature against the set temperature (37°C) has been found to be 1°C which is satisfactory. A temperature monitor has been designed through a circuit network incorporating a thermistor so that the voltage output is linearly related to the temperature. This allowed the use of a simple millivoltmeter to display the temperature directly through appropriate scaling. To ensure the safety of the baby an alarm circuit was designed which provides sound alarms for personnel attention if the temperature goes beyond a specified safe range, chosen here as 26°C 38°C. In developing countries, like Bangladesh frequent power cuts demand an uninterrupted operation of incubator and a battery back up system, which could also be powered by a solar panel, has been suggested for this purpose. DOI: http://dx.doi.org/10.3329/bjmp.v5i1.14668 Bangladesh Journal of Medical Physics Vol.5 No.1 2012 53-61

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Section: Introductionmentioning

confidence: 99%

Design of an Enhanced Temperature Control System for Neonatal Incubator

2013

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“…But only temperature control is not sufficient to provide comfortable environment. Also, the relative humidity control is very important to reduce the new born heat loss [6,7]. For these reasons, we have developed an active humidification system based on a nebulizer.…”

Section: Introductionmentioning

confidence: 99%

Decoupling Control Approach for Neonate Incubator System

Feki¹,

Zermani²,

Mami³

2012

IJCA

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This paper presents an adaptive decoupling temperature and humidity control for neonatal incubator process by exploiting an active humidification system. The neonatal incubator is a Two-Input Two-Output process (TITO) with characteristics of strong coupling and time variation. The coupling problem is treated by the weight adjustment of the output error to reduce the effect of coupling and to enhance control performance. In addition, an Adaptive Decoupling strategy based on Generalized Predictive Control (ADGPC) with Multivariable Recursive Extended Least-Squares (MVRELS) parameters estimator is used. The simulation and real results demonstrate that the decoupling by error dependent tuning of the weighting factor can eliminate the coupling influence with better control performance and can be easily generalized to the Multiple-Input -Multiple-Output (MIMO) systems.

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“…Therefore, some incubators have active or passive systems to control the internal RH. Control schemes built to deal with this issue have been described by Bouattoura et al [1998], Amorim [1994], Guler and Burunkaya [2002] and Oliveira et al [2006]. In fact, by controlling the relative humidity and air temperature values, one is actually also controlling the internal partial vapor pressure.…”

Section: Introductionmentioning

confidence: 99%