Research Of Conformance Testing For The Vehicle Lights And Wiper Systems Based On AUTOSAR Standard

Along with the fast development of embedded systems, automotive electronicsindustry has been in the period of rapid development. AUTOSAR (AUTomotive OpenSystem ARchitecture) is open and standardized automotive software architecture,jointly developed by automobile manufacturers, suppliers and tool developers in2003.AUTOSAR standard advocates "cooperate on standards, compete on implementation".Automotive electronics software products will be developed by different softwaremanufacturers according to standard, which can be used in different automotives.Testing is the guarantee of software product quality, according to real-time, highreliability, networking features of automotive electronics systems, testing becomeseven more important. Conformance testing is an important black-box test method, bycontrolling the input, observing the output to evaluate the different implementationsof the AUTOSAR standard whether it is consistent with specification of the standard.TTCN-3is formalized languages of test suite and developed by ETSI (EuropeanTelecommunications Standards Institute), it posses a strict definition of the syntax andsemantics, also have many useful features for the testing. It is widely used in varioustests. The conformance testing of car lights electronic systems and wiper/washersystems are implanted by using TTCN-3language. The main contents are as follows:(1) Analyze of TTCN-3test system architecture, and then conformance testingsystems are designed according to the architecture, the adapter entity and the codecentities are also implemented.(2) Analyze of AUTOSAR standards, and extract testing requirements, simulate ofthe system under test in high-level language. Then abstract test suites are designed byTTCN-3language. At last, take headlight system and wiper/washer system as example,conformance testing systems are accomplished in the article step by step.(3) Considering real-time characteristic of automotive electronics systems, testingrequirements about real-time are analyzed, taking signal light system an example,conformance testing systems are also implemented.(4) Because of the TTCN-3language’s features about dynamic creation of testcomponents and configuration, and also the complexity of automotive electronics,some research on parallel testing and a tasks scheduling algorithm are given at last.