Distributed Large-Scale Dimensional Metrology

Abstract

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The SPQR («Semper Paratus ad Qualitatem et Rationem») Principle in Action

“…We mainly use excerpts from the book (published in 2011) and in one of the last papers, I could see (2010) [32,33].…”

Large-scale dimensional metrology (LSDM): from tapes and theodolites to multi-sensor systems

“…9,[43][44][45][46][47][48][49][50] Overall, the main objective of LSDM is to obtain measurement systems easy to install, possibly in the same place in which the object is constructed or utilized, characterized by a short acquisition time, accurate, able to perform contactless measurement also at a considerable distance from the measured object, in different working conditions and as cheaper as possible. Some commercial or prototypal systems have been realized with these objectives, at the current state of the art it is worth citing in particular photogrammetric systems and laser radars, which, apart from the economical aspect, are heading towards this direction with interesting results.…”

“…In fact, even when using contact optical systems, such as for example MScMS-II, surface reflections of light (or IR signal) may interfere with the measurement. 9,65 This is the reason why, very often, optical systems need matt surfaces or specific pre-treatments of them before measurement.…”

“…a distance or an angle). 1,8,9 However, many system are equipped by specific software for data elaboration, in order to provide further information such as for example the features of specific geometrical figures, or to perform advanced calibration, set-up and self-diagnostic operations.…”

“…Last decades has shown a great deal of applications of LSDM, involving different arenas of technology, ranging from civil and industrial architecture to aerospace engineering. [1][2][3][4][5][6][7][8][9] Typical applications refer to the measurement of large machines and structures, such as for example in the aeronautic and shipbuilder industry, but also in the field of topographical and architectural surveying. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] A branch of application, which is often neglected by the scientific literature when referring to LSDM, concerns the tracking of objects in movement in large spaces, such as for examples warehouses or industrial plants, or even over the territory.…”