Capacitive sensor-based fluid level measurement in a dynamic environment using neural network

Terzić, Edin; Nagarajah, Romesh; Alamgir, Muhammad

doi:10.1016/j.engappai.2009.09.014

Cited by 36 publications

(28 citation statements)

References 4 publications

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“…Here we have demonstrated that a volumetric array consisting of thermistors and capacitive sensors can be mounted on a flexible polyimide substrate measuring 18 cm x 12 cm and can be completely incorporated into an ostomy appliance measuring 23 cm x 15 cm. The size and appearance of the device is comparable to currently marketed stoma appliances, as can be seen in wall of a rigid structure [21]. A combination of thermal and capacitive sensing has not previously been described in volumetric sensing applications.…”

Section: Discussionmentioning

confidence: 84%

Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates

Fearn¹,

Naik²,

Dorofeeva³

et al. 2019

Preprint

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Over 55% of stoma patients suffer complications such as dehydration. Outcomes may be improved through communicating stoma output data to the patient and their clinical teams. Past artificial neural networks to improve accuracy in fluid level sensing were designed to account for ‘slosh’ caused by variable acceleration in one or two axes of movement. This paper describes the development of a novel sensor platform for non-invasive monitoring of stoma output in real time through incorporating a volumetric array consisting of thermistors and capacitive sensors into an ostomy appliance. Stoma output which exits the body at core temperature passes into a stoma appliance in a pattern which is dictated by water content, existing effluent within the bag and distortion of the usual bag shape. By using thermistors, a thermal boundary demarcates the accumulated level of fecal material as the effluent settles. A capacitive array allows the measurement of volume of output. The sensing components communicates via near field communication (NFC) and transmits data to a smartphone application by Bluetooth low energy (BLE). Testing of the device on 11 existing ileostomy patients with 51.6 bag hours of data found a correlation between measured volume and predictive value, supporting its use in this population.

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Section: Discussionmentioning

confidence: 84%

Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates

Fearn¹,

Naik²,

Dorofeeva³

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

“…A charge and discharge technique of cylindrical capacitive sensor is developed by G. Behzadi et al [11] to measure the liquid level of different liquids like distilled water, mineral water, tap water and salt water. E. Terzic et al [12] have proposed a neural network based capacitive sensor to measured fluid level under dynamic condition and have obtained very low measurement error by using static feed-forward back propagation neural network. F. N. Toth et al [13] have developed a microcontroller based capacitive liquid level measurement and leakage detection system in which the sensing capacitor consists of two parallel electrodes with one electrode grounded and other electrode divided into insulated segments .…”

Section: Introductionmentioning

confidence: 99%

Study on Further Modification of Non-Contact Capacitance Type-Level Transducer for a Conducting Liquid

Chakraborty

Bera²,

Mandal

et al. 2015

IEEE Sensors J.

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A non-contact capacitance type liquid level transducer for a conducting liquid consists of a short circuited non-inductive coil wound on a uniform cylinder made of insulating material like glass, PVC, nylon, teflon etc. The cylinder is connected with a storage tank through a metallic connector and the capacitance between upper short circuited end of the coil and metallic connector varies linearly with liquid level measured from datum level. The capacitance at datum level depends on atmospheric condition and the fringe effect of other conductors. So the transducers require frequent recalibration depending on atmospheric and environmental conditions. In the present paper, this non-contact capacitive sensor has been further modified in order to minimize this defect of non-contact capacitive sensor. Moreover, all the conventional capacitance type level sensors are associated with a perpendicular plate capacitance between liquid and electrode which varies with the length of the electrode. In the present paper, the effect of this perpendicular capacitor on liquid level measured has been studied and its effect is minimized. The proposed modified transducer has been designed and developed and its theory of operation has been derived. The performance of the developed transducer has been experimentally studied and the experimental results are reported in the paper. A good linear performance characteristic of the transducer with very minimum parasitic capacitance effect has been observed.

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“…In neural network theory, dynamic neural networks are generally more powerful than static networks since they have memory that can remember the past values and states of the network [20]. The output of the dynamic network depends on the current input values as well as on the previous inputs, outputs or states of the network.…”

Section: Experiments Conductingmentioning

confidence: 99%

Neuro-genetic optimization of disc brake performance at elevated temperatures

Ćirović¹,

Smiljanic²,

Aleksendrić³

2014

FME Transaction

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Capacitive sensor-based fluid level measurement in a dynamic environment using neural network

Cited by 36 publications

References 4 publications

Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates

Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates

Study on Further Modification of Non-Contact Capacitance Type-Level Transducer for a Conducting Liquid

Neuro-genetic optimization of disc brake performance at elevated temperatures

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Capacitive sensor-based fluid level measurement in a dynamic environment using neural network

Cited by 36 publications

References 4 publications

Validation of a Novel Connected &ldquo;Smart&rdquo; Stoma Bag to Monitor Output in Ostomates

Validation of a Novel Connected &ldquo;Smart&rdquo; Stoma Bag to Monitor Output in Ostomates

Study on Further Modification of Non-Contact Capacitance Type-Level Transducer for a Conducting Liquid

Neuro-genetic optimization of disc brake performance at elevated temperatures

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Product

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Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates

Validation of a Novel Connected “Smart” Stoma Bag to Monitor Output in Ostomates