Full range analog Wheatstone bridge‐based automatic circuit for differential capacitance sensor evaluation

Ferri, Giuseppe; Stornelli, Vincenzo; Parente, Francesca Romana; Barile, Gianluca

doi:10.1002/cta.2298

Cited by 33 publications

(15 citation statements)

References 22 publications

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“…The first observation allows to underline how the management of many analog sensors is complex because of several disadvantages due to losses and signal noise along the connection cables [40] that require compensation circuits for each probe [41][42][43].…”

Section: Common Systems and Literature Backgroundmentioning

confidence: 99%

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

et al. 2019

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In this paper, a novel integrated measuring and control system for hot box experiments is presented. The system, based on a general-purpose microcontroller and on a wireless sensors network, is able to fully control the thermal phenomena inside the chambers, as well as the heat flux that involves the specimen wall. Thanks to the continuous measurements of air and surfaces temperatures and energy input into the hot chamber, the thermal behavior of each hot box component is analyzed. A specific algorithm allows the post-process of the measured data for evaluating the specimen wall thermal quantities and for creating 2D and 3D thermal models of each component. The system reliability is tested on a real case represented by a double insulating X-lam wall. The results of the 72 h experiment show the system’s capability to maintain stable temperature set points inside the chambers and to log the temperatures measured by the 135 probes, allowing to know both the U-value of the sample (equal to 0.216 ± 0.01 W/m2K) and the thermal models of all the hot box components. The U-value obtained via hot box method has been compared with the values gathered through theoretical calculation and heat flow meter measurements, showing differences of less than 20%. Finally, thanks to the data postprocessing, the 2D and 3D thermal models of the specimen wall and of the chambers have been recreated.

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Section: Common Systems and Literature Backgroundmentioning

confidence: 99%

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

et al. 2019

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“…The first allows us to measure inclinations. It consists of a MEMS differential capacitive device suitably read by means of capacity to voltage conversion interface [3][4][5] whose output is sampled and made available to the output via I2C protocol. The transceiver hosts a dedicated microcontroller which manages the incoming data accumulation through an input buffer, and suitably transfers them to the main microcontroller.…”

Section: Proposed Network: Hardwarementioning

confidence: 99%

Automatic Wireless Monitoring System for Real-Time Rock Fall Events

Barile

Ferri

Leoni

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In this work; we present an innovative sensing system able to recognize a rock fall event and to monitor the structural parameters of a falling rock protection barrier. The system has been conceived and optimized for any protection barrier; gabion mesh or concrete blocks; it has a modular and flexible architecture; organized with a control unit and sensing nodes that can be arranged directly on the considered site. This architecture provides information about the vibration and the inclination of the falling rock protection barrier. The data; continuously monitored; are collected on a web server responsible to check the overall status of the barrier itself and to generate and send automatic messages for any criticisms. A web application has been also developed for system monitoring; to create summary report and to analyze the data collected. The novel system is currently working on a gabion protecting mesh installed in the south of Italy.

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“…Pozo proposed a cylindrical structure that uses four electrodes to monitor liquid level and angle changes. Four sets of electrodes are connected in parallel to form a set of measuring electrodes to measure liquid level [5]. However, the liquid level data in this case are not adequate, and the influence of shape error during processing cannot be eliminated.…”

Section: Introductionmentioning

confidence: 99%

Design and evaluation of a single-tube cross-capacitance fuel level sensor

Wang

2020

Therm sci

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Original scientific paper https://doi.org/10.2298/TSCI190504024YIn order to improve the accuracy and reduce the weight of the cross-capacitor fuel level sensor, a novel single-tube cross-capacitor fuel level sensor is designed. Specifically, the fuel level measurement model of the single-tube cross-capacitance sensor is established, and the relationship between the measured liquid level and the sensor output capacitance is derived. Then, a finite element analysis model is constructed to solve the capacitance output of the sensor. The results of experiments conducted demonstrate that the output capacitance value of the designed single-tube cross-capacitive sensor changes linearly in the range 0-14 pF, with linearity ± 0.8%, hysteresis error ± 0.1%, and maximum reference error -1.0% FS at a liquid level of 120 mm. The optimized structural parameters were as follows: plate gap angle θ = 2⁰, quartz tube inner radius R 0 = 11.5 mm, quartz tube thickness R 1 -R 0 = 1.6 mm, and sensitivity = 0.0723 pF/mm (representing an 11.1% increase after optimization). The cross-capacitive fuel level sensor developed in this study is both lightweight and high precision.

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Full range analog Wheatstone bridge‐based automatic circuit for differential capacitance sensor evaluation

Cited by 33 publications

References 22 publications

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

Integrated Measuring and Control System for Thermal Analysis of Buildings Components in Hot Box Experiments

Automatic Wireless Monitoring System for Real-Time Rock Fall Events

Design and evaluation of a single-tube cross-capacitance fuel level sensor

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