Browse Publications Technical Papers 2018-01-0592
2018-04-03

Coherent Treatment of Time in the Development of ADAS/AD Systems: Design Approach and Demonstration 2018-01-0592

The application of digital control in the automotive domain clearly follows an evolution with increasing complexity of both covered functions and their interaction. Advanced Driver Assistance Systems (ADAS) and Automated Driving Functions (AD) comprise modular interacting software components that typically build upon a layered architecture. As these components are generally developed by different teams, using different tools for different functional purposes and building upon different models of computation, an integration of all components guaranteeing the satisfaction of all requirements calls for coherent handling of timing properties.
We propose an approach addressing this major challenge, which consists of four design paradigms. A compositional semantic framework - based on a notion of components, their interfaces and their interaction - provides the common ground. Equipped with well-defined semantics allowing to express specifications in terms of contracts, and together with also well-defined operations (such as decomposition and refinement), the framework gives means to all typical design steps in the considered application domain. The second paradigm consists of a carefully selected set of contract specification patterns covering a multitude of relevant timing phenomena. The third paradigm concerns the embedding of different models of computation into the framework, lifting them into a common semantic domain. The fourth design paradigm provides for integrating models of computation by means of interaction components. All those paradigms are well-known in academia or industrial practice. Although we have extended them where needed in order to fit the particular needs of ADAS/AD design, it is foremost their interplay which is the novelty of our approach.
The application of the approach is exemplified by an industrial-motivated case study of an emergency stop system. In the course of this demonstration we show that coherent treatment of time and timing effects in ADAS/AD design is indeed possible and can be integrated in typical industrial processes.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

An In-Vehicle Distributed Technique for Remote Programming of Vehicles' Embedded Software

2005-01-0313

View Details

TECHNICAL PAPER

Designing Reusable and Scalable Software Architectures for Automotive Embedded Systems in Driver Assistance

2010-01-0942

View Details

TECHNICAL PAPER

Software Services in Automotive Class A and B Multiplex Applications

890534

View Details

X