Tobias Dörr, M. Sc.

Tobias Dörr, M. Sc.

  • Engesserstr. 5

    76131 Karlsruhe

Research interests

Model-based design of safety-critical embedded systems

Modern embedded systems used in domains such as automotive or aerospace are subject to increasingly stringent safety and real-time requirements. To cope with the complexity that is associated with the development of such systems, novel design paradigms based on formal models are becoming increasingly important. In this context, we develop modeling techniques and, based on these techniques, software tools that automatically transform given model instances into reliable implementation artifacts.

Synthesis of isolation mechanisms for modern mixed-criticality systems

To meet their performance requirements, modern embedded systems are increasingly based on multicore processors. This is often accompanied by a tight integration of subsystems with different criticality levels. To ensure that a sufficient degree of safety and security is achieved despite this integration, reliable isolation mechanisms must be incorporated into the systems. We investigate approaches that perform an automatic generation of such mechanisms by leveraging available hardware capabilities.

Fault tolerance mechanisms based on dynamic hardware redundancy

As automated driving functions are on the rise, the risk of electronic malfunctions in the vehicle leading to physical harm is increasing. Therefore, components that are relevant in this context must often be designed in such a way that they reliably deliver a defined minimum level of functionality despite such malfunctions. This requires the use of suitable fault tolerance mechanisms. We are researching how the concept of dynamic hardware redundancy can be used to implement such mechanisms a particularly cost-effective manner.

Supervised student works

  • MA: “Development of a Configurable Access Protection Module for FPGA Components”
  • SA: “Evaluation of Cost-Efficient Fault Detection Approaches for MPSoC-Based Fail-Operational Systems”
  • MA: “Development of an FPGA-Controlled Architecture for Dynamic On-Chip Redundancy of Safety-Critical Functions”
  • MA: “Optimization of a Code Generator for Isolation Configurations of Modern MPSoCs”

Publications


2024
Conference Papers
Automatic Deployment of Embedded Real-Time Software Systems to Hypervisor-Managed Platforms
Schade, F.; Dörr, T.; Ahlbrecht, A.; Janson, V.; Durak, U.; Becker, J.
2024. 2023 26th Euromicro Conference on Digital System Design (DSD), Golem, 6th - 8th September 2023, 436 – 443, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DSD60849.2023.00067
2023
Conference Papers
Pattern-Based Information Flow Control for Safety-Critical On-Chip Systems
Dörr, T.; Schade, F.; Becker, J.
2023. Computer Safety, Reliability, and Security. Ed.: J. Guiochet, 181–195, Springer Nature Switzerland. doi:10.1007/978-3-031-40923-3_14
Presentations
Tutorial: Simulation-based development of networked avionics systems using the XANDAR toolchain
Dörr, T.; Schade, F.; Ahlbrecht, A.
2023, June 7. 4th Summer School on Cyber-Physical Systems and Internet-of-Things (CPS&IoT 2023), Budva, Montenegro, June 6–10, 2023
2022
Conference Papers
Safety by Construction: Pattern-Based Application of Safety Mechanisms in XANDAR
Dörr, T.; Schade, F.; Masing, L.; Becker, J.; Keramidas, G.; Antonopoulos, C. P.; Mavropoulos, M.; Kelefouras, V.; Voros, N.
2022. 2022 IEEE Computer Society Annual Symposium on VLSI (ISVLSI), Nicosia, Cyprus, 04-06 July 2022, 369–370, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ISVLSI54635.2022.00081
A Behavior Specification and Simulation Methodology for Embedded Real-Time Software
Dörr, T.; Schade, F.; Ahlbrecht, A.; Zaeske, W.; Masing, L.; Durak, U.; Becker, J.
2022. 2022 IEEE/ACM 26th International Symposium on Distributed Simulation and Real Time Applications (DS-RT), 151–159, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DS-RT55542.2022.9932069
Hypervisor-Based Target Deployment Strategies for Time Predictability in Model-Based Development
Schade, F.; Dörr, T.; Becker, J.
2022. Conference Proceedings: 2022 IEEE 35th International System-on-Chip Conference (SOCC) Ed.: S. Sezer, 1–2, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/SOCC56010.2022.9908090
XANDAR: A holistic Cybersecurity Engineering Process for Safety-critical and Cyber-physical Systems
Siddiqui, F.; Khan, R.; Sezer, S.; McLaughlin, K.; Masing, L.; Dörr, T.; Schade, F.; Becker, J.; Ahlbrecht, A.; Zaeske, W.; Durak, U.; Adler, N.; Sailer, A.; Weber, R.; Wilhelm, T.; Nemeth, G.; Nemeth, G.; Morales, V.; Gomez, P.; Keramidas, G.; et al.
2022. 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring): Proceedings ; 19–22 June 2022, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/VTC2022-Spring54318.2022.9860859
XANDAR: Exploiting the X-by-Construction Paradigm in Model-based Development of Safety-critical Systems
Masing, L.; Dörr, T.; Schade, F.; Becker, J.; Keramidas, G.; Antonopoulos, C. P.; Mavropoulos, M.; Tiganourias, E.; Kelefouras, V.; Antonopoulos, K.; Voros, N.; Durak, U.; Ahlbrecht, A.; Zaeske, W.; Panagiotou, C.; Karadimas, D.; Adler, N.; Sailer, A.; Weber, R.; Wilhelm, T.; et al.
2022. 2022 Design, Automation & Test in Europe Conference & Exhibition (DATE), Antwerp, Belgium, 14-23 March 2022, 814–818, Institute of Electrical and Electronics Engineers (IEEE). doi:10.23919/DATE54114.2022.9774534
2021
Journal Articles
Model-based configuration of access protection units for multicore processors in embedded systems
Dörr, T.; Sandmann, T.; Becker, J.
2021. Microprocessors and microsystems, 87, Article no: 104377. doi:10.1016/j.micpro.2021.104377
Achieving cost-efficient fail-operational behavior based on inherent redundancy at the system level
Dörr, T.; Sandmann, T.; Friederich, P.; Leitner, A.; Becker, J.
2021. Microprocessors and microsystems, 87, Aricle no: 104380. doi:10.1016/j.micpro.2021.104380
Conference Papers
XANDAR: X-by-Construction Design framework for Engineering Autonomous & Distributed Real-time Embedded Software Systems
Becker, J.; Masing, L.; Dörr, T.; Schade, F.; Keramidas, G.; Antonopoulos, C. P.; Mavropoulos, M.; Tiganourias, E.; Kelefouras, V.; Antonopoulos, K.; Voros, N.; Durak, U.; Ahlbrecht, A.; Zaeske, W.; Panagiotou, C.; Karadimas, D.; Adler, N.; Sailer, A.; Weber, R.; Wilhelm, T.; et al.
2021. Proceedings 2021 31st International Conference on Field-Programmable Logic and Applications: FPL 2021 ; Dresden, Germany, 30 August – 3 September 2021, 382–383, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/FPL53798.2021.00075
Employing the Concept of Multilevel Security to Generate Access Protection Configurations for Automotive On-Board Networks
Dörr, T.; Sandmann, T.; Mohr, H.; Becker, J.
2021. 2021 24th Euromicro Conference on Digital System Design (DSD), 107–114, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DSD53832.2021.00026
2020
Conference Papers
An Approach to Cost-Efficient Fault Tolerance in Inherently Redundant Fail-Operational Systems
Dörr, T.; Sandmann, T.; Friederich, P.; Leitner, A.; Becker, J.
2020. 2020 23rd Euromicro Conference on Digital System Design (DSD), 630–637, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DSD51259.2020.00103
A Formal Model for the Automatic Configuration of Access Protection Units in MPSoC-Based Embedded Systems
Dörr, T.; Sandmann, T.; Becker, J.
2020. 2020 23rd Euromicro Conference on Digital System Design (DSD), 596–603, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/DSD51259.2020.00098
2019
Conference Papers
Leveraging the Partial Reconfiguration Capability of FPGAs for Processor-Based Fail-Operational Systems
Dörr, T.; Sandmann, T.; Schade, F.; Bapp, F. K.; Becker, J.
2019. Applied Reconfigurable Computing – 15th International Symposium, ARC 2019, Darmstadt, 9.-11. April 2019, 96–111, Springer. doi:10.1007/978-3-030-17227-5_8
2018
Reports/Preprints