Details
| Original language | English |
|---|---|
| Pages (from-to) | 62-68 |
| Number of pages | 7 |
| Journal | Sensors and Actuators, A: Physical |
| Volume | 220 |
| Early online date | 28 Sept 2014 |
| Publication status | Published - 1 Dec 2014 |
Abstract
The design and development of a new fibre optic sensor system for the optical detection of leakages in sewerage tunnels is reported. The system developed overcomes the disadvantages of the usually employed camera based inspection systems which are relatively complex and, in addition, require cleaning of the structures to be monitored beforehand. The sensor concept created combines a Fibre Bragg Grating (FBG)-based humidity sensor and a swellable polymeric fibre optic sensor. Both sensors are located along the sewerage tunnel so that they can response immediately to any leakages that may occur. The swellable polymeric fibre optic sensor shows a response of 34.2 dB in the presence of water, a performance which is superior to that seen form other swellable polymeric fibre optic sensors reported so far. Furthermore, the resistance of both sensors to highly alkaline environments (pH 13.4), an important feature of such sensors was verified. Consequently, when compared to the use of conventional inspection techniques, the novel fibre optic sensor system provides a robust, relatively low-cost and continuous monitoring system well suited to use in sewerage tunnels.
Keywords
- Distributed optical sensing, Fibre Bragg Grating, Humidity sensing, Leakage detection, Sewerage tunnel
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Instrumentation
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Metals and Alloys
- Engineering(all)
- Electrical and Electronic Engineering
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In: Sensors and Actuators, A: Physical, Vol. 220, 01.12.2014, p. 62-68.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Sewerage tunnel leakage detection using a fibre optic moisture-detecting sensor system
AU - Bremer, K.
AU - Meinhardt-Wollweber, M.
AU - Thiel, T.
AU - Werner, G.
AU - Sun, T.
AU - Grattan, K. T.V.
AU - Roth, B.
N1 - Funding Information: The authors acknowledge support of the Bundesministerium für Wirtschaft und Energie (BMWi) – Zentrales Innovationsprogramm Mittelstand (ZIM) within Grant Number VP2672502UW1 . The support of the Royal Academy of Engineering and the George Daniels Educational Trust for KTVG is gratefully acknowledged.
PY - 2014/12/1
Y1 - 2014/12/1
N2 - The design and development of a new fibre optic sensor system for the optical detection of leakages in sewerage tunnels is reported. The system developed overcomes the disadvantages of the usually employed camera based inspection systems which are relatively complex and, in addition, require cleaning of the structures to be monitored beforehand. The sensor concept created combines a Fibre Bragg Grating (FBG)-based humidity sensor and a swellable polymeric fibre optic sensor. Both sensors are located along the sewerage tunnel so that they can response immediately to any leakages that may occur. The swellable polymeric fibre optic sensor shows a response of 34.2 dB in the presence of water, a performance which is superior to that seen form other swellable polymeric fibre optic sensors reported so far. Furthermore, the resistance of both sensors to highly alkaline environments (pH 13.4), an important feature of such sensors was verified. Consequently, when compared to the use of conventional inspection techniques, the novel fibre optic sensor system provides a robust, relatively low-cost and continuous monitoring system well suited to use in sewerage tunnels.
AB - The design and development of a new fibre optic sensor system for the optical detection of leakages in sewerage tunnels is reported. The system developed overcomes the disadvantages of the usually employed camera based inspection systems which are relatively complex and, in addition, require cleaning of the structures to be monitored beforehand. The sensor concept created combines a Fibre Bragg Grating (FBG)-based humidity sensor and a swellable polymeric fibre optic sensor. Both sensors are located along the sewerage tunnel so that they can response immediately to any leakages that may occur. The swellable polymeric fibre optic sensor shows a response of 34.2 dB in the presence of water, a performance which is superior to that seen form other swellable polymeric fibre optic sensors reported so far. Furthermore, the resistance of both sensors to highly alkaline environments (pH 13.4), an important feature of such sensors was verified. Consequently, when compared to the use of conventional inspection techniques, the novel fibre optic sensor system provides a robust, relatively low-cost and continuous monitoring system well suited to use in sewerage tunnels.
KW - Distributed optical sensing
KW - Fibre Bragg Grating
KW - Humidity sensing
KW - Leakage detection
KW - Sewerage tunnel
UR - http://www.scopus.com/inward/record.url?scp=84907919723&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2014.09.018
DO - 10.1016/j.sna.2014.09.018
M3 - Article
AN - SCOPUS:84907919723
VL - 220
SP - 62
EP - 68
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
SN - 0924-4247
ER -