Strain-temperature monitor of high speed railway switch by fiber Bragg grating gauges

Li, Weilai; Huang, Xiaomei; Cheng, Jian; Pan, Jianjun

doi:10.1117/12.865497

Cited by 3 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…8. For a bare FBG at a band of 1300 nm, when it was taken as a strain sensor directly, according to our experiment, a micro-strain only produced a 1-pm wavelength shift [3].…”

Section: Fbg Pole Stress Detector With the Stresssensibilized Methodsmentioning

confidence: 80%

FBG stress-sensibilized monitor for railway switch pole on-line monitoring

Liu

Pan

et al. 2014

Photonic Sens

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The fiber Bragg grating (FBG) sensing technology is used to dynamically monitor multiple parameters of railway switch machine poles, including time of movement, direction and quantity of loading and locking force, and states of loading resistance. This paper presents the design and implementation of a railway switch pole strain on-line monitoring system based on the FBG stress-sensibilized monitor for a Siemens S700K switch machine. The ring shape FBG strain gauge and stress-sensibilized methods significantly increased the monitoring sensitivity. Installing approaches adapted the harsh environment in the railway application. The monitoring results showed the high sensitivity and high reliability of this monitoring system. This application provides a long-term and on-line detecting method which could meet railway switch condition monitoring demands of more than 100,000 switch machines in the country.

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“…8. For a bare FBG at a band of 1300 nm, when it was taken as a strain sensor directly, according to our experiment, a micro-strain only produced a 1-pm wavelength shift [3].…”

Section: Fbg Pole Stress Detector With the Stresssensibilized Methodsmentioning

confidence: 80%

FBG stress-sensibilized monitor for railway switch pole on-line monitoring

Liu

Pan

et al. 2014

Photonic Sens

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“…Because of the symmetrical appearance, ΔCD, the deforming value in vertical direction of the ring is the same, but negative. 3 , and durability test shows that it is save for a piece of fiber long term loading with 1500με.…”

Section: Structure and Operation Principlementioning

confidence: 97%

Displacement monitor with FBG deforming ring and its application in high speed railway

Zhang

Wang

et al. 2012

SPIE Proceedings

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A displacement monitor with deforming ring is developed to ensure the FBG suspended and to avoid it to be chirped by covering glue. The mechanical analysis provides ring size to ensure suitable BFG wavelength shift extent within detected range. Two pieces of FBG are crosswise fixed on the ring and pre-drawn properly. Rail creep force of high speed railway makes one tense, the other compress. To add these two wavelength shifts, the sensitivity is doubled, and environmental temperature interference is eliminated. Its general error is ±0.25% FS; repeatability is 0.2% FS; resolution is 0.1mm; the temperature error, from -20 to 60Cº, is ±0.45mm in 50mm range.

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“…FBGs bonded to rails have been used to monitor local deformation of the rail in response to the loading by a passing train and to monitor switch arms during transitions [10]. The displacement of a switch and the sleepers on which it was mounted were monitored on a high-speed line, showing good correlation with daily temperature changes [20,21].…”

Section: Applications Of Optical Fbg Sensors In the Rail Industrymentioning

confidence: 99%

Railway track component condition monitoring using optical fibre Bragg grating sensors

Buggy

James

Staines

et al. 2016

Meas. Sci. Technol.

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The use of optical fibre Bragg grating (FBG) strain sensors to monitor the condition of safety critical rail components is investigated. Fishplates, switchblades and stretcher bars on the Stagecoach Supertram tramway in Sheffield in the UK have been instrumented with arrays of FBG sensors. The dynamic strain signatures induced by the passage of a tram over the instrumented components have been analyzed to identify features indicative of changes in the condition of the components.

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Strain-temperature monitor of high speed railway switch by fiber Bragg grating gauges

Cited by 3 publications

References 1 publication

FBG stress-sensibilized monitor for railway switch pole on-line monitoring

FBG stress-sensibilized monitor for railway switch pole on-line monitoring

Displacement monitor with FBG deforming ring and its application in high speed railway

Railway track component condition monitoring using optical fibre Bragg grating sensors

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