Ground Surface Deformation Sensor Based on Cable Impedance

Ren Yuan Tong; Qing Li; Ming Li; Xiong Li

doi:10.4028/www.scientific.net/AMM.241-244.998

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 241-244Ground Surface Deformation Sensor Based on Cable...

Ground Surface Deformation Sensor Based on Cable Impedance

Abstract:

In order to measure ground surface deformation, a sensor based on cable impedance change is studied in this paper. This sensing cable has elastic double helical structure with much larger measurement range than optical fiber distributed deformation technology. Using the precision impedance analyzer, we obtain the relationship between elongation and impedance of the sensing cable and choose one of the frequent as the measurement frequency. A ground surface deformation measuring circuit is designed for the sensing cable. Deformation experiment shows that the relationship between sensing cable impedance and stretching deformation is approximately linearity, when the deformation is small.

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Periodical:

Applied Mechanics and Materials (Volumes 241-244)

Pages:

998-1003

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.241-244.998

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Online since:

December 2012

Authors:

Ren Yuan Tong*, Qing Li, Ming Li, Xiong Li

Keywords:

Cable Impedance, Elastic Helical, Geological Hazard Monitoring, Ground Surface Deformation

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* - Corresponding Author

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