Modeling a contact patch using a multiple laser system

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2005-01-01
Authors
Blum, Douglas
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Abstract

This research examined the repeatability problems associated with data collection with road profiling equipment on textured concrete roads. Over time, the test equipment used for road profiling has evolved from a contact type instrument and to a non-contact instrument. Problems with textured or tined concrete have surfaced which question the repeatability using the newest non-contact type devices. Through previous research studies, repeatability issues have narrowed, and an industry consensus has been reached and documented to correct these problems. In response to the consensus and in an attempt to provide the customers with a robust product, a solution was developed to respond to the need for repeatability testing on textured surfaces. For the past seven years, the standard single laser system has provided adequate repeatability on tight mix asphalt and lightly textured concrete, however, this research led to the development of a multi laser sensor system called the TriODS laser system. The TriODS is a multiple laser system that has taken the single laser system technology and built upon it to provide a means to handle textured/tined concrete. Typically, three lasers are used in tandem to read the road surface with the intention of modeling the surface to eliminate or bridge any texture/tining.

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Sat Jan 01 00:00:00 UTC 2005