The Intelligent Tire: Acceleration Sensors Data Acquisition

In the EC funded APOLLO project the feasibility of an “intelligent tire” concept is investigated. The main objective is to increase traffic safety introducing acceleration sensors into the tire in order to evaluate exerted forces at tire-road interface, contact patch area length, friction coefficient, slip angle, aquaplaning, road conditions and tire wear. Acceleration data, transmitted by a wheel-mounted RF transceiver, are received by a dedicated electronic unit, further processed and sent to the vehicle control system by means of a CAN interface. Bit rate, transmission protocol and clock recovery aspects are discussed.