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Mehmed, Ayhan
Publications (3 of 3) Show all publications
Mehmed, A., Antlanger, M., Steiner, W. & Punnekkat, S. (2019). Forecast Horizon for Automated Safety Actions in Automated Driving Systems. In: 38th International Conference on Computer Safety, Reliability and Security SAFECOMP 2019: . Paper presented at 38th International Conference on Computer Safety, Reliability and Security SAFECOMP 2019, 10 Sep 2019, Turku, Finland.
Open this publication in new window or tab >>Forecast Horizon for Automated Safety Actions in Automated Driving Systems
2019 (English)In: 38th International Conference on Computer Safety, Reliability and Security SAFECOMP 2019, 2019Conference paper, Published paper (Refereed)
Abstract [en]

Future Automated Driving Systems (ADS) will ultimately take over all driving responsibilities from the driver. This will as well include the overall safety goal of avoiding hazards on the road by exe- cuting automated safety actions (ASA). It is the purpose of this paper to address the general properties of the ASA. One property in particu- lar interest is the forecast horizon that defines how early in advance a hazard has to be identified in order to ensure the execution of an ASA. For the estimation of the forecast horizon, we study the fault-tolerant time interval concept defined by the ISO 26262 and extend it for the use case of fail-operational ADS. We then perform a thorough study on all parameters contributing to the forecast horizon, assign exemplary values for each parameter for a running example, and formalize our work by a set of equations. The set of equations are then applied to two specific driving scenarios, and based on the running example values, the fore- cast horizon is estimated. We conclude our work with a summary of the estimated forecast horizon for each of the specific driving scenarios at different road conditions and the recommended road speed limits.

National Category
Engineering and Technology Computer Systems
Identifiers
urn:nbn:se:mdh:diva-43944 (URN)
Conference
38th International Conference on Computer Safety, Reliability and Security SAFECOMP 2019, 10 Sep 2019, Turku, Finland
Projects
RetNet - The European Industrial Doctorate Programme on Future Real-Time Networks
Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-06-20Bibliographically approved
Mehmed, A., Steiner, W., Antlanger, M. & Punnekkat, S. (2019). System Architecture and Application-Specific Verification Method for Fault-Tolerant Automated Driving System. In: IEEE Intelligent Vehicles Symposium workshops IEEE IVS 2019 WS: . Paper presented at IEEE Intelligent Vehicles Symposium workshops IEEE IVS 2019 WS, 09 Jun 2019, Paris, France.
Open this publication in new window or tab >>System Architecture and Application-Specific Verification Method for Fault-Tolerant Automated Driving System
2019 (English)In: IEEE Intelligent Vehicles Symposium workshops IEEE IVS 2019 WS, 2019Conference paper, Published paper (Refereed)
Abstract [en]

Automated vehicles come with promises for higher comfort and safety compared to the standard human-driven vehicles. Various demonstrator vehicles with fully automated driving capabilities have been already presented with success. Yet, there is a large number of technical challenges to be solved until the safety levels comply with those required from safety standards, and most importantly with those for public acceptance. In this paper, we introduce the technical challenges resulting from the need for fault-tolerant capabilities of automated vehicles with no fallback-ready drivers. We then propose a concrete solution to these challenges. This includes a fault-tolerant architecture for automated driving systems. Also, the safety co-pilot, that is a safety mechanism that ensures the coordinated operation of two or more redundant ADS, by means of novel application-specific verification methods. We conclude our work with experimental proof of concept results of the proposed solution.

National Category
Engineering and Technology Computer Systems
Identifiers
urn:nbn:se:mdh:diva-43943 (URN)
Conference
IEEE Intelligent Vehicles Symposium workshops IEEE IVS 2019 WS, 09 Jun 2019, Paris, France
Projects
RetNet - The European Industrial Doctorate Programme on Future Real-Time Networks
Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-08-26Bibliographically approved
Mehmed, A., Punnekkat, S. & Steiner, W. (2017). Deterministic Ethernet: Addressing the Challenges of Asynchronous Sensing in Sensor Fusion Systems. In: 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops, DSN-W 2017; Denver; United States; 26 June 2017 through 29 June 2017: . Paper presented at The 47th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2017), 26-29 June 2017, Denver, Colorado, USA (pp. 22-28). , Article ID 8023693.
Open this publication in new window or tab >>Deterministic Ethernet: Addressing the Challenges of Asynchronous Sensing in Sensor Fusion Systems
2017 (English)In: 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops, DSN-W 2017; Denver; United States; 26 June 2017 through 29 June 2017, 2017, p. 22-28, article id 8023693Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we study the cause of out-of-sequence measurements (OOSM) and their effect on Kalman filter based multi-sensor fusion systems. We explore the current available solutions for handling of OOSM and pinpoint how the absence of precise measurement timestamps does not allow the correct chronological order of sensor measurements. The processing of such, out-of-order measurements, leads to negative-time measurement updates in the sensor fusion process, which in turn leads to a wrong representation of the environment.Furthermore, we present methods for achieving precise measurement timestamps. We explore the suitability of set of communication standards for improving the timestamp precision. In particular we focus on IEEE 802.1AS, IEEE 802.1Qav, Qbv and SAE AS6802 standards that enable deterministic communication over IEEE802.3 standard Ethernet. We present theoretical performance studies and comparison of the said communication standards.

National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-36084 (URN)10.1109/DSN-W.2017.44 (DOI)000425860600005 ()2-s2.0-85031711590 (Scopus ID)978-1-5386-2272-8 (ISBN)
Conference
The 47th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2017), 26-29 June 2017, Denver, Colorado, USA
Available from: 2017-07-10 Created: 2017-07-10 Last updated: 2019-08-26Bibliographically approved
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