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Proceedings Paper

Technology of 0-20 ton FBG loadcell
Author(s): Weilai Li; Fenfang Zhu; Bo Jiang
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Paper Abstract

In a traditional weighing scale, the loadcells with strain gauges are widely used, however, as an electrical device, its performance is poor under the conditions of interference and corrosion. According to the stress distribution of a cantilever loadcell, two FBGs (fiber Bragg grating), were adhered to replace traditional strain gauges in a 0-20t cantilever loadcell. One of them was used as a tensive sensor and the other is as a compressive sensor. To subtract their measuring results, the response is doubled, meanwhile, the environmental interference is eliminated. The calibration showed that the repeatability in full scale achieved as high as 0.02%. In its application, FBG loadcells were used to do weighing of running vehicles in a weigh-in-motion (WIM) scale, the results showed that the FBG scale performed better than strain gauge scale under the same WIM processing program. Under the speed of 11km/h, the measuring accuracy could be kept within 1%.

Paper Details

Date Published: 21 November 2007
PDF: 7 pages
Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67814P (21 November 2007); doi: 10.1117/12.745525
Show Author Affiliations
Weilai Li, Wuhan Univ. of Technology (China)
Fenfang Zhu, Wuhan Univ. of Technology (China)
Bo Jiang, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6781:
Passive Components and Fiber-based Devices IV
Ming-Jun Li; Jianping Chen; Satoki Kawanishi; Ian H. White, Editor(s)

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