Low-cost capacitive sensor for oil-level monitoring in aircraft

Palma, Luisa De; Adamo, Francesco; Attivissimo, Filippo; Gioia, Sergio de; Nisio, Attilio Di; Lanzolla, Anna Maria Lucia; Scarpetta, Marco

doi:10.1109/i2mtc48687.2022.9806667

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…This paper investigates a novel approach to the design of a capacitive sensor for level sensing, with the proposal of a new geometry design for the sensing probes. The design is presented in section 2, starting from the work presented in [19]. Several problems will be discussed, such as vibrational stresses and capillarity effects of the fluid in the gap between probes.…”

Section: Introductionmentioning

confidence: 99%

First experimental tests on the prototype of a capacitive oil level sensor for aeronautical applications

et al. 2023

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In this paper, the design, the prototyping, and the first experimental tests of a Capacitive Oil Level Sensor (CLS) intended for aeronautical applications are described. Due to potentially high vibrational stresses and the presence of high electromagnetic interferences (EMI), the working conditions on aircraft can be considered quite harsh. Hence, both the sensing part and the conditioning circuit should meet strict constraints. For this reason, in the design phase, great attention has been paid also to the mechanical characteristics of the probes. All the design aspects are exposed and the main advantages concerning alternative level sensing techniques are discussed and the preliminary experimental results of sensitivity, linearity, hysteresis, and settling time tests are presented and commented.

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Section: Introductionmentioning

confidence: 99%

First experimental tests on the prototype of a capacitive oil level sensor for aeronautical applications

et al. 2023

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“…To make use of these temperature gradients most efficiently, additional effort to characterize such systems is required [16] - [18]. This paper investigates motor oil level monitoring using a novel capacitive sensor geometry [19], focusing on obtaining a reduced settling time with a customized conditioning circuit. A typical capacitive level sensor is made of two concentric cylinders of conductive materials with the monitored fluid filling the intermediate gap.…”

Section: Introductionmentioning

confidence: 99%

Development and Prototyping of a Capacitive Oil Level Sensor for Aeronautical Applications

Adamo¹,

Attivissimo²,

Gioia³

et al. 2022

Proceedings of the 25th IMEKO TC4 International Symposium and 23rd International Workshop on ADC and DAC Modelling and Testing

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Capacitive Level Sensors (CLSs) are one of the most used level-sensing technologies in the industry as they are cheap, reliable and show high sensitivity. A typical capacitive level sensor with concentric and closed cylindrical armatures has slow dynamical response when used for high viscosity liquids such as lubricating oil for aeronautic applications. This work investigates a conditioning circuit that uses a capacitance to frequency converter and that could provide fast and accurate measurements when paired with cylindrical sensor using an LC tank-based oscillator as the exciting source. The preliminary experimental results show a linear response with small error and standard deviation.

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A design strategy for performance improvement of capacitive sensors for in-flight oil-level monitoring aboard helicopters

et al. 2023

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Low-cost capacitive sensor for oil-level monitoring in aircraft

Cited by 6 publications

References 7 publications

First experimental tests on the prototype of a capacitive oil level sensor for aeronautical applications

First experimental tests on the prototype of a capacitive oil level sensor for aeronautical applications

Development and Prototyping of a Capacitive Oil Level Sensor for Aeronautical Applications

A design strategy for performance improvement of capacitive sensors for in-flight oil-level monitoring aboard helicopters

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