Integrated Wheel Sensor Communication Using ESP32 - A Contribution Towards a Digital Twin of the Road System

Abstract

While current onboard state estimation methods are adequate for most driving and safety-related applications, they do not provide insights into the interaction between tires and road surfaces. This paper explores a novel communication concept for efficiently transmitting integrated wheel sensor data from an ESP32 microcontroller. Our proposed approach utilizes a publish-subscribe system, surpassing comparable solutions in the literature regarding data transmission volume. We tested this approach on a drum tire test rig with our prototype sensors system utilizing a diverse selection of sample frequencies between 1 Hz and 32 000 Hz to demonstrate the efficacy of our communication concept. The implemented prototype sensor showcases minimal data loss, approximately 0.1% of the sampled data, validating the reliability of our developed communication system. This work contributes to advancing real-time data acquisition, providing insights into optimizing integrated wheel sensor communication.

Authors 5

1. Ventseslav Yordanov Aachen Institute for Automotive Engineering

   RWTH Aachen University

   Affiliation as printed

   Institute for Automotive Engineering, RWTH Aachen University

2. Simon Schäfer Aachen Chair of Embedded Software

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair of Embedded Software

3. Stefan Kowalewski Aachen Chair of Embedded Software

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair of Embedded Software

4. Bassam Alrifaee

   Universität der Bundeswehr München

   Affiliation as printed

   University of the Bundeswehr Munich,Department of Aerospace Engineering,Germany

5. Lutz Eckstein Aachen Institute for Automotive Engineering

   RWTH Aachen University

   Affiliation as printed

   Institute for Automotive Engineering, RWTH Aachen University