汽车控制单元基于模型的设计Model-based design for automotive control unit

The main aspects of my work are: willingness to understand the software architecture and

the network topology of an automotive ECU and apply the concepts of Model-Based design to

implement the logic of some vehicle functions (VFs).

In particular two vehicle functions were analyzed: Vehicle Speed & Odometer and Emergency

Stop Signalling.

This VFs are generally responsibility of the BCM ECU. In automotive electronics, BCM is

intended as the Body Control Module, generic term for an electronic control unit used to monitor

and to control many electronic accessories built in the vehicle. Typically is used to control service

accessories like power windows, power mirrors, etc. and to control and to monitor security

accessories like central locking, alarm and immobilizer system.

Model-Based design work starts with the requirements analysis, followed by the architecture

design to converge in a detailed model design in order to define the architecture of the model and

development of the functional logic. This workflow enables me to stay in the same environment

from requirement to test, minimizing the amount of work. In addition, testing can begin at

the requirement phase when I simulate the executable specifications in models to verify that the

requirements are met. As a result, defects are caught and removed earlier, lowering the total cost

of development.

The treatise is structured as follow: in chapter 1, an introduction will show the reasons for

Model-Based design techniques as modern automotive environment; in chapter 2, I will discuss

about Model-Based design techniques and its advantages; in chapter 3, I will discuss about invehicle

networks and protocols; chapter 4 focuses on AUTOSAR architecture; in chapter 5 I will

discuss about the supporting tools for Model-Based design and testing; in chapter 6, I will show

the case study, so the works about the two vehicle functions under analysis; finally, chapter 7 will

draw my conclusions.