Liquid level gauge based in plastic optical fiber

Antunes, Paulo; Dias, João M.S.; Paixão, Tiago; Mesquita, Esequiel; Varum, Humberto; André, Paulo S.

doi:10.1016/j.measurement.2015.01.030

Cited by 52 publications

(19 citation statements)

References 19 publications

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“…Essentially, from the year 2000, the implementation of systems and sensors employing optical technologies [46][47][48][49][50][51]. The optical fiber sensing techniques make possible the measurement of a high number of parameters with only one fiber cable, through the sensors multiplexing techniques [52].…”

Section: Recent Advances On Shmmentioning

confidence: 99%

Global overview on advances in structural health monitoring platforms

Mesquita

Antunes

Coelho

et al. 2016

J Civil Struct Health Monit

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Advances in the development of sensors, data processing systems, and numerical models have motivated the implementation of structural health monitoring (SHM) specially focused on the assessment of structural safety. Thus, this work presents a literature review about SHM platforms, especially from 1993 to 2015. In this way, a short history review about the recent advances on SHM, mainly related with dynamic monitoring, was summarized, and a benchmark and the main guidelines related with SHM platforms were also included in this review. Some case studies are also described here. Special attention was given to SHM platforms, and a method for their classification (an extension of Rytter's method) is presented. In addition, experiences related with heritage constructions, specially focused on maintenance, were included in this work. In the final section, some observations are made about the new prospects for SHM. The recent advances on SHM platforms contributed to the development of adaptive systems and to the cost reduction of the monitoring systems implementation, allowing the increase of its application in real structures. However, the monitoring systems should be implemented, optimizing all the available sensing technologies.

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Section: Recent Advances On Shmmentioning

confidence: 99%

Global overview on advances in structural health monitoring platforms

Mesquita

Antunes

Coelho

et al. 2016

J Civil Struct Health Monit

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“…La medición de nivel permite conocer y controlar la cantidad de líquido almacenada en un depósito, durante la misma hay que tomar en cuenta algunas propiedades del líquido tales como la viscosidad del fluido, temperatura, densidad, corrosión, gránulos, etc. Para el tipo de medición y la calidad deseada se deben conocer las características del instrumento como campo de medición, exactitud, repetitividad, presurización o no del recipiente, mantenimiento, calibración y costo [1], [3].…”

Section: Introductionunclassified

Sistema de Monitoreo de Nivel de Líquido en Grandes Depósitos

Llorens¹,

Molinet

Montero

2019

ing.

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Context: The objective of this work is to design and build a system capable of controlling the level of liquids stored in large tanks. The system is also oriented to its use in automatic control practices and the transmission of information from a distance.Method: It consists of different stages that meet the fulfillment of the proposed objective. In addition, it is composed of sound and light alarms in case of spills in the tanks or lack of communication between its components. The realization of digital control within the system required a data acquisition procedure implemented by Arduino with XBee modules for communication, and a personal computer.Results: This type of procedure to implement the control was chosen due to the ease of implementation, the benefits and the low costs of the system with respect to those existing in the market. Another task was the practical study of the different control techniques applied to a real system for monitoring the level of liquids in large capacity tanks. Conclusions:The validation of the measurement system was made through a comparison between the real values obtained with the measurement instruments and the values shown by the system through the web application that was designed. The correct operation of this system allowed its subsequent installation in real deposits.

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“…The structure is simple and the measurement range is large enough. For example, the operational range of the multipoint liquid level sensor could exceed 2 m, which is achieved by engraving grooves on a vertical POF [7,8], bending and polishing POFs [9] or aligning a group of POF segments coaxially [10], and so on. The maximum range among them is 2.8 m but the resolution is 350 mm.…”

Section: Introductionmentioning

confidence: 99%

An Optical Fiber Liquid Level Sensor Based on Side Coupling Induction Technology

Zhang

Hou

et al. 2018

Journal of Sensors

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An optical fiber liquid level sensor based on two twisted polymer optical fibers twining around a racetrack column is demonstrated in this study. The side-coupling power of the passive fiber is modulated by the refractive index (RI) of the environment medium and decreases while the liquid level increases. The variation patterns of the side-coupling power in the bent section and the straight section form a step attenuation, which can improve the measurement range with a superior sensitivity and distinguish liquids with different RIs. Furthermore, the cost-effective sensor also shows good reversibility and low temperature-dependent properties.

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Liquid level gauge based in plastic optical fiber

Cited by 52 publications

References 19 publications

Global overview on advances in structural health monitoring platforms

Global overview on advances in structural health monitoring platforms

Sistema de Monitoreo de Nivel de Líquido en Grandes Depósitos

An Optical Fiber Liquid Level Sensor Based on Side Coupling Induction Technology

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