Rolling noise analysis for on-board road state evaluation

Abstract

A system capable of analyzing the road state is proposed. This system captures and processes the noise produced by the interaction of the tires with the road, to reliably estimate the road surface conditions. Based on proposed system, an embedded device, tightly integrated with vehicle electronics has been designed and implemented. Resulting system, called Acoustic Asphalt Analyzer (A3), is capable of working on-board and in real time, with a very high success rate and a very fast response time. It can be applied to surface auscultation or active safety in vehicles, being useful in initiatives such as connected and unmanned vehicles. A3 allows to know the surface road conditions in real-time and provide data to the infrastructure manager, other drivers and the vehicle driver himself. The solution has been patented.