Distributed fiber optics techniques for gas network monitoring

Campanella, Carlo Edoardo; Ai, Gang; Ukil, Abhisek

doi:10.1109/icit.2016.7474825

Cited by 12 publications

(6 citation statements)

References 22 publications

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“…These single-point sensors can be multiplexed and placed at strategic locations along the fibre to construct a quasi-distributed measurement. Distributed sensing uses the fibre-optical cable to monitor strain across the entire length of the structure under investigation [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Optical Fibre Devices For Strain Sensingmentioning

confidence: 99%

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Campanella

Cuccovillo²,

Yurt³

et al. 2018

Sensors

374

185

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Fibre Bragg grating (FBG) strain sensors are not only a very well-established research field, but they are also acquiring a bigger market share due to their sensitivity and low costs. In this paper we review FBG strain sensors with high focus on the underlying physical principles, the interrogation, and the read-out techniques. Particular emphasis is given to recent advances in highly-performing, single head FBG, a category FBG strain sensors belong to. Different sensing schemes are described, including FBG strain sensors based on mode splitting. Their operation principle and performance are reported and compared with the conventional architectures. In conclusion, some advanced applications and key sectors the global fibre-optic strain sensors market are envisaged, as well as the main market players acting in this field.

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Section: Optical Fibre Devices For Strain Sensingmentioning

confidence: 99%

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Campanella

Cuccovillo²,

Yurt³

et al. 2018

Sensors

374

185

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“…Different approaches have been employed to solve the problem of leak in pipelines [2]- [4]. Campanella et.al.…”

Section: A Literature Reviewmentioning

confidence: 99%

Experimental Validation of Leak and Water-Ingression Detection in Low-Pressure Gas Pipeline Using Pressure and Flow Measurements

et al. 2017

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In underground low-pressure gas distribution pipelines, ground water enters the pipeline through cracks. This is known as the water ingress problem, and it occurs predominantly in the monsoon season when the water table is high. This issue is currently detected based on complaints from the users. In order to arrive at an efficient and reliable processing technique, experimental results of pressure and flow on an existing low-pressure gas pipeline are reported in the present paper. Several experiments for leak location, severity of the leak, water ingression with various volumes of water followed by removal of water are conducted. Healthy network loading data collected over a 24 hr period is used to verify the robustness of the derived parameters for water ingression detection. The present technique can detect leaks easily with a leak valve opening of 30 o . Robust detection of water ingression with more than 10% of pipe volume is possible.

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“…With the aim of transferring these benefits to a new kind of optical sensors to be used for real life applications, in this paper we propose methane gas sensors based on the redirection of light propagation in coupled resonant cavities, allowing the detection of a methane gas concentration under its lower explosive limit (LEL). This detection feature is crucial in different environments, such as in oil and gas industries and in domestic and commercial sites, where high methane gas concentrations may give rise to an explosion hazard [4]. Being the LEL of methane 5% by volume [5], precise and reliable sensors are needed.…”

Section: Introductionmentioning

confidence: 99%

Methane Gas Photonic Sensor Based on Resonant Coupled Cavities

Campanella

Carlo

Cuccovillo³

et al. 2019

Sensors

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In this paper we report methane gas photonic sensors exploiting the principle of absorption-induced redirection of light propagation in coupled resonant cavities. In particular, an example of implemented architecture consists of a Fabry–Pérot (FP) resonator coupled to a fibre ring resonator, operating in the near IR. By changing the concentration of the methane gas in the FP region, the absorption coefficient of the FP changes. In turn, the variation of the methane gas concentration allows the redirection of the light propagation in the fibre ring resonator. Then, the methane gas concentration can be evaluated by analysing the ratio between the powers of two resonant modes, counter-propagating in the fibre ring resonator. In this way, a self-referenced read-out scheme, immune to the power fluctuations of the source, has been conceived. Moreover, a sensitivity of 0.37 ± 0.04 [dB/%], defined as the ratio between resonant modes at different outputs, in a range of methane concentration included between the 0% and 5%, has been achieved. These results allow a detection limit below the lower explosive limit (LEL) to be reached with a cost-effective sensor system.

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Distributed fiber optics techniques for gas network monitoring

Cited by 12 publications

References 22 publications

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Experimental Validation of Leak and Water-Ingression Detection in Low-Pressure Gas Pipeline Using Pressure and Flow Measurements

Methane Gas Photonic Sensor Based on Resonant Coupled Cavities

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