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TTTech using VectorCAST platform for development of Audi zFAS to ISO 26262 ASIL-D compliance; domain controller for piloted driving

TTTech Computertechnik AG (TTTech) has selected Vector Software’s VectorCAST software test automation platform for use within TTTech’s development of Audi’s zFAS (zentrales Fahrerassistenzsteuergerät)—the domain controller for Audi piloted driving systems. (Earlier post.) VectorCAST provides TTTech with the tools necessary to ensure ISO 26262 compliance up to ASIL D level on all microcontrollers used in zFAS.

Under the guidance of Audi AG, TTTech developed the zFAS electronic control unit (ECU) that integrates various functionalities of advanced driver assistance systems (ADAS). The ECU uses numerous technology components from TTTech for various automotive assistance functions, such as piloted parking or autonomous driving.

Audi’s zFAS addresses the rapidly increasing performance demand of active and passive assistance systems. It enables new functions such as piloted driving on congested highways and piloted parking.

—Marc Lang, director sales & marketing automotive at TTTech

The VectorCAST embedded software testing platform is a family of products that automates testing activities across the software development lifecycle.

VectorCAST tools support capture and reporting of structural code coverage for all Automotive Safety Integrity Levels (ASIL) required by ISO 26262—an international standard for the functional safety of electrical and/or electronic systems in production automobiles. Functional safety refers to the absence of unreasonable risk due to hazards caused by the malfunction of systems.

ASIL is the automotive-specific risk-based approach for determining product risk classes. Risk classes are defined as Level A though D, with ASIL D representing the highest risk due to a failure.

Adherence to software functional safety standards is increasingly important to the automotive industry. VectorCAST helps software development organizations to satisfy the stringent testing requirements of the ISO 26262 standard.

—William McCaffrey, chief operating officer of Vector Software

zFAS receives and processes the information supplied by all sensors—including the signals from the 3D cameras, the laser scanner and the radar and ultrasonic sensors. zFAS will be capable of continuously comparing the data from the vehicle sensor systems with the model of the road space and its surroundings.

zFAS is based on a complex multicore network, hosting sophisticated sensor fusion and a variety of innovative functions with multiple safety criticality levels for its target applications such as piloted parking or driving.


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