Driver assistance systems which intervene in the vehicle's longitudinal and lateral control are safety-critical and have to work reliably in all thinkable and unthinkable traffic situations. The huge amount of test scenarios necessary to validate the system's behavior requires ECU tests to be front-loaded from real to virtual test drives. Typically, HIL systems are used for this. However, as HIL simulators are a highly contested resource and precious HIL test time has to be saved, MIL and SIL simulation is increasingly being used to set up and validate driving maneuvers and test libraries. With the introduction of AUTOSAR, it is even possible to run original ECU software components including basic software on a PC and to perform further tests in an early development stage. The actual HIL tests can then be more and more restricted to the verification of test results generated during MIL or SIL simulation. As a result, the quality of the ECU software is increased and development cycles shortened. To utilize the front-loading approach efficiently, the same models, tools and tests must be used continuously for PC offline and real-time HIL simulation. The tool chain from dSPACE presented here addresses this use case. It allows the assessment and validation of different driver assistance systems during MIL, SIL and HIL simulation. Dedicated models and tools are available especially for testing radar- and camera-based applications which are increasingly common in modern production vehicles. This tool chain is unique in that automated tests can be performed very early in the development process by using virtual ECUs containing parts of the original ECU software.


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