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Method of laser & imaging deflection measurement

DONG Hui, CHEN Wei-min, FU Yu-mei, XIA Zhe hongqing Universitiy, Chongqing 400044,China)  
The principles of deflection measurement systems of both laser and imaging are analyzed.With the discussion of their performances,a new method of laser imaging deflection measurement is provided.The measuring system is designed and tested indoors and outdoors in laboratory.The experment result demonstrates that system excursion is little in the measuring environment-maintaining condition ,and it can be used to measure deflection with high accuracy and large range for large rigid bridges with sealed beam.
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