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DataInjection And Partial ECU-Simulation

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About the job

Data Injection and Partial ECU-simulation

Introduction

Scania is one of the leading European manufacturers of heavyduty vehicles (HDV), with global sales of 66'900 trucks, 5'190 buses and 10'990 engines in 2020. Quality of the productions that Scania delivers to costumers is extremely important. That’s why we at Scania try to keep the quality and also work continuedly with improving the quality of our product.

For achieving that goal we need to introduce, design and perform different types of tests in different levels during our continues improvement. The different levels in our tests is according to the standard V-model testing. How well and reliable the verification process is done depends on quality of tests and our test equipment. That’s why improving our tests and test-systems is an important ongoing work at Scania.

Background

In our group we develop embedded software for some ECUs and perform system and limited integration tests on the ECUs to be sure that the new functions have implemented correctly and fulfill our specification. We have regression tests that help us to check if existing functions still work properly and that adding new functions haven’t affected them.

  • In our system level tests (SUT, System under test): We normally simulate other ECUs/Nodes on real CAN/LIN busses. In this approach we can configure simulated nodes but we need well-defined models that describe the behavior of the simulated nodes to test the relevant system operations.

  • in our integration level tests: We have more than one real ECU and don’t have much possibility to interact with real ECUs other than simulating sensors or surrounding ECUs .In this level of testing CAN/LIN communication are captured monitored and wider functions over a network of ECUs is verified. Data sniffers is used widely in this level of testing.

Assignment

Introducing and studying a new level of testing between the mentioned test levels (System-test and integration-test). In this new level testing, two or more real ECUs will be connected together and instead of having a fully simulated ECU and all its messages, the ECU will be active on the bus and only some of its messages should be blocked and rest of its messages will be passed to the bus. The blocked messages should be simulated by test-systems.

This approach will help us to maintain a big part behavior of that “partly-simulated” ECU and a complex model is not needed anymore during a partial simulation. Then, the test-system can take control over desirable messages selectively.

Based on the description, the assignment can be summarized as follows:

  • Studying how the existing levels of testing work, how those levels are categorized and which limitations they have.
  • Studying the proposed concept and compare it with existing test-levels. Explain and measure the benefits of the new concept and identify its constrains.
  • Investigate how the new concept can be implemented and which test tools are needs.
  • Try to implement a simple prototype that can illustrate how the new concept can look like.

Education

Preferred experience and competence of applicants:

  • Embedded Systems, applied physics, electrical engineering, vehicle engineering, mechatronics or similar.
  • Scripting/programming.
  • HW/SW integration.

Number of students: 1-2
Start date: Jannuary-February 2022
Estimated time needed: 20 weeks

Contact Person:

Jan Karlsson Tel: +46 8553 80216

Application

Please enclose personal letter, CV and the list of grades from the latest M.Sc. studies

Om företaget

Scania is a world-leading provider of transport solutions, including trucks and buses for heavy transport applications combined with an extensive product-related service offering. Scania offers vehicle financing, insurance and rental services to enable our customers to focus on their core business. Scania is also a leading provider of industrial and marine engines. In 2019, we delivered 91,700 trucks, 7,800 buses as well as 10,200 industrial and marine engines to our customers. Net sales totalled to over SEK 152 billion, of which about 20 percent were services-related. Founded in 1891, Scania now operates in more than 100 countries and employs some 51,000 people. Research and development are concentrated in Sweden, with branches in Brazil and India. Production takes place in Europe, Latin America and Asia, with regional production centers in Africa, Asia and Eurasia. Scania is part of TRATON SE.

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