Characterisation of a polymer-coated fibre Bragg grating sensor for relative humidity sensing

Yeo, T.L.; Sun, Tao; Grattan, Kenneth T. V.; Parry, David; Lade, R.; Powell, B. D.

doi:10.1016/j.snb.2005.01.033

Cited by 237 publications

(124 citation statements)

References 19 publications

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“…While the authors have reported fiber optic humidity sensor systems in previous research [4]- [7], a critical aspect of the work in this research has been to tailor the design of the sensor system to the requirements of the measurement "in-the-field" and for the stonework itself: this involving developing a specific design of its protection and packaging for use in the harsh environments experienced. As a result, the dual-parameter sensor elements have been protected in this special design created to allow monitoring of the key parameters involved in the deterioration of stone masonry structures, as prescribed by the users of the devices.…”

Section: B Sensor Design Fabrication and Packagingmentioning

confidence: 99%

Building Stone Condition Monitoring Using Specially Designed Compensated Optical Fiber Humidity Sensors

et al. 2012

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Abstract-This paper presents the design and implementation of a novel optical fiber temperature compensated relative humidity (RH) sensor device, based on fiber Bragg gratings (FBGs) and developed specifically for monitoring water ingress leading to the deterioration of building stone. The performance of the sensor thus created, together with that of conventional sensors, was first assessed in the laboratory where they were characterized under experimental conditions of controlled wetting and drying cycles of limestone blocks, before being employed "in-the-field" to monitor actual building stone in a specially built wall. Although a new construction, this was built specifically using conservation methods similar to those employed in past centuries, to allow an accurate simulation of processes occurring with wetting and drying in the historic walls in the University of Oxford.

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Section: B Sensor Design Fabrication and Packagingmentioning

confidence: 99%

Building Stone Condition Monitoring Using Specially Designed Compensated Optical Fiber Humidity Sensors

et al. 2012

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“…When the polyimide resin is coated on the FBG sensor to form the moisture sensitive layer, this polyimide coating will undergo a volume expansion as the water molecules migrate into it, which directly induces a strain imposed on the FBG and in turn results in a proportional shift of the Bragg wavelength of the FBG sensor. Based on this sensing mechanism, the humidity measurements are carried out by directly reading this wavelength shift through spectrum analysis methods [9,16,31,36,[42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Polyimide-Coated Fiber Bragg Grating Sensors for Humidity Measurements

Wang¹,

Fang²,

Huang³

2012

High Performance Polymers - Polyimides Based - From Chemistry to Applications

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Compared to the conventional mechanical and electrical/electronic humidity sensors, fiber-optic based humidity sensors [6,14], including silica glass fiber and polymer optical fiber (POF) based sensors [28, 46], demonstrate many unique advantages, such as small size and low weight, immunity to electromagnetic interference, corrosion resistance, potentials for remote operation and distributed sensing. In fiber-optic sensor family, the fiber grating

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“…Among others, gas sensing (Buric et al, 2007;Caucheteur et al, 2008), humidity sensing (Kronenberg et al, 2002;Yeo et al, 2005), salinity Men et al, 2008), magnetic field (Davino et al, 2008;Yang et al, 2009) and pH monitoring (Corres et al, 2007) have been recently reported. Based on a similar principle, the association of an absorbing layer to a FBG can be realized for infrared (IR) radiation detection purposes as it has been demonstrated in (Caucheteur, 2010;Renoirt, 2010;Yüksel, 2011).…”

Section: Introductionmentioning

confidence: 99%