Development of an AUTOSAR Network Management Project

OData support
Dr. Sujbert László
Department of Measurement and Information Systems

The number of electronic control units (ECU) in automobiles is continuously

increasing. Designing complex system consisting of hundreds of ECUs is a challenging

engineering task. The AUTOSAR standard established in the early 2000s, aims at

supporting this design process by various facilities, like a modelling language and

software architecture.

The growing number of electronic units results in higher electric power, and fuel

consumption. This undesired effect can be reduced by switching off inactive units. In

traditional topologies electric units are powered on and off according to the ignition

signal. However this function can be realized by communication networks, where

devices are turned on and off by bus messages respectively.

Since in most cases entire communication buses cannot be shut down, ECUs are

organized into so called partial networks according to their functionalities. This refined

structure enables selectively switching off certain unused services in the vehicle. To

manage the partial networks, and to realize selective wake-up, we have to use such

hardware bus interfaces (transceivers), which are able to power up the ECUs on certain

messages. This mechanism is supported by CAN communication protocol standard

(ISO 11898-6).

The goal of the work presented here is realising the software layer of a control

unit in AUTOSAR architecture, supporting partial networks. The proper operation of

network management is verified, and a PC side test tool is implemented. This

application connects to the communication bus by a gateway, displays and simulates the

network management messages. The test tool is realised in Eclipse environment, by

means of AUTOSAR system models.


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