Technology of 0-20 ton FBG loadcell

Weilai Li; Fenfang Zhu; Bo Jiang

doi:10.1117/12.745525

21 November 2007 Technology of 0-20 ton FBG loadcell

Weilai Li, Fenfang Zhu, Bo Jiang

Proceedings Volume 6781, Passive Components and Fiber-based Devices IV; 67814P (2007) https://doi.org/10.1117/12.745525
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

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%.

Citation Download Citation

Weilai Li, Fenfang Zhu, and Bo Jiang "Technology of 0-20 ton FBG loadcell", Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67814P (21 November 2007); https://doi.org/10.1117/12.745525

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