Automotive data acquisition system - FST

David Rua

Key information

Authors:

David Rua (David Rua Copeto)

Supervisors:

Moisés Simões Piedade (Moisés Simões Piedade); Francisco André Corrêa Alegria (Francisco André Corrêa Alegria)

Published in

11/26/2009

Abstract

This thesis addresses the design, implementation and validation of a telemetry system for a Formula Student prototype vehicle, having in mind an existing CAN-bus network of sensors in it. The proposed system is divided in two blocks: a mobile station and a base station. The first, is placed on the vehicle and is connected to its sensors through a CAN-bus. This mobile station has the function of recording locally the data generated by the bus activity and also of transferring this data wirelessly to the base station located off-track. The second has the function of picking up the data sent through the wireless link and presenting it in an attractive and comprehensible way to the user. Besides the ?online? operation, the base station is also capable of presenting data from previous logging sessions for analysis. The developed telemetry system was successfully deployed on a practice track, being able to reliably record CAN-bus data of a variable number, sample rate and type of sensors. The performance of the radio link between stations was also evaluated both in controlled and real environments in order to understand the limits of the system. The results show a maximum wireless data rate of 4.28 kB/s for a typical vehicle position on track.