In-vehicle communication networks : a literature survey

The increasing use of electronic systems in automobiles instead of mechanical and hydraulic parts brings about advantages by decreasing their weight and cost and providing more safety and comfort. There are many electronic systems in modern automobiles like antilock braking system (ABS) and electronic brakeforce distribution (EBD), electronic stability program (ESP) and adaptive cruise control (ACC). Such systems assist the driver by providing better control, more comfort and safety. In addition, future x-by-wire applications aim to replace existing braking, steering and driving systems. The developments in automotive electronics reveal the need for dependable, efficient, high-speed and low cost in-vehicle communication. This report presents the summary of a literature survey on in-vehicle communication networks. Different in-vehicle system domains and their requirements are described and main invehicle communication networks that have been used in automobiles or are likely to be used in the near future are discussed and compared with key references

An experimental study of the FlexRay dynamic segment

It is expected that the time-triggered FlexRay bus will replace the event-triggered Controller Area Network (CAN) for the high-speed in-vehicle communication in future automobiles. To this end, FlexRay provides a static segment for the transmission of periodic messages and a dynamic segment that is suitable for exchanging event-based (sporadic) messages. In this paper, we experimentally evaluate the operation of the FlexRay dynamic segment. In particular, we study how the maximum and average message delays are affected if the length of the dynamic segment, the message payload, the utilization of the dynamic segment and the priority assignment changes. Our experiments are carried out on a FlexRay network with 6 nodes

Configuring the communication on FlexRay - the case of the static segment

The paper provided is a reworked version of the paper included in the ERTS Proceedings.International audienceThis paper deals with the configuration of the static segment of a FlexRay network, in the case where the tasks producing the signals are not synchronized with the FlexRay communication cycle, as it can be the case, for instance, if legacy software is to be re-used. First, we provide solutions to verify the freshness constraints of the signals exchanged in the static segment, under the form of both simple non-schedulability tests and an exact analysis. Then we propose a heuristic to construct the communication schedule, which proved to be efficient in our experiments. Finally, we highlight some future work that should help us further optimize the configuration of FlexRay networks, be it in regard to hardware resource usage or dependability objectives

A NOVEL APPROACH FOR FLEXRAY PROTOCOL WITH CONFIDENTIALITY AND AUTHENTICITY

Master'sMASTER OF ENGINEERIN

Recursive Set-Membership State Estimation Over a FlexRay Network

10.13039/501100001809-National Natural Science Foundation of China (Grant Number: 61873148, 61873169, 61903253 and 61933007); Royal Society of the U.K.; Alexander von Humboldt Foundation of Germany