Hierarchical Mapping of an Electric Vehicle Sensor and Control Network

Abstract

This article reviews the electronic networks used in automotive engineering, with particular reference to a fully electric vehicle (EV). The block diagram of the electronic network of the vehicle is assembled on the basis of measurements and studies carried out on a university EV. The block diagram includes the network connections of sensors, actuators, switches, indicators, control systems, and sub-systems of the vehicle. After mapping the electrical network, the paper is briefly surveying the communication systems and control processors used in EV, then investigates the causes of the probabilities of the failures from the sensor core up to the control units. Regarding sensors investigation, the most important sensor, the wheel speed sensor, will be examined, then the LIN and CAN bus systems operation and its possible faults will be reviewed, analysed. At the end of the article, in the appendix, the complete electronic network of the vehicle can be seen.