Patent ID: 7895015
Filing Date: 2011-02-22
Classification: G01B,G01C

Abstract:
1. A method for determining structural health of a bridge comprising: (a) measuring a plurality of cardinal points fixed to said bridge from a plurality of locations, wherein (b) measuring at least; a first range from a first electronic distance measurement instrument to a first cardinal point, a second range from a second electronic distance measurement instrument to said first cardinal point, and a third range from a third electronic distance measurement instrument to said first cardinal point, wherein (c) storing at least said first, second, and third ranges; (d) computing a first three dimensional coordinate of said first cardinal point, in said stable reference coordinate system, based at least in part on said first, second, and third ranges; (e) determining at least a first structural health parameter of said bridge based at least in part on said first three dimensional coordinate; (f) storing said first structural health parameter.