The popularity of electronic systems had increased in automobiles. A lot of ECUs, electronics sensors, bus are used in automobile systems which has made the system complex. Safety analysis should be done to ensure functional safety. IEC has introduced the standard, ISO 26262 for safety analysis of electrical/electronic/programmable systems in automobiles to reduce and control systematic faults. ISO 26262 give guidelines to define and follow the techniques strategically for the entire product life cycle of the vehicle. It does not explain how functional safety is done but it will guide us throughout the process. In this paper, we have analysed the Automatic Emergency Braking system as per the ISO 26262 guidelines. AEB is a significantly important active safety system which relies on electronic sensors, ECU and electronic actuators. The proper functioning of these electronic components could save the hazard from happening. We have determined the ASIL level, we determine safety goal and safety requirement, Fault Tree Analysis (FTA), Failure mode and Effect analysis. Also, we performed an HW safety analysis.
Keywords: Electronic Sensors, functional safety, ISO 26262, Automatic Emergency Braking, Medini Analyze, Fault Tree analysis (FTA), Electro-Hydraulic Braking System, Failure Mode and Effect Analysis, Model-Based Safety Analysis, Safety Goals, HARA, FTA
- S. K. Saha, "Past, Present and Future of Automotive Software Engineering," Quest, Journal of Research in Mechanical Engineering, vol. 8, pp. 29-36, 2022.ISSN(Online): 2321-8185. https://www.questjournals.org/jrme/papers/vol8-issue4/D08042936.pdf
- S. Furst, T., “AUTOSAR and Functional Safety,” Safetronic 2011, 8 Nov. 2011, Sheraton Arabellapark Hotel, Munich. https://automotivetechis.files.wordpress.com/2013/04/autosar-and-functional-safety1.pdf
- R. Dardar, “Building a Safety Case in Compliance with ISO 26262 for Fuel Level Estimation and Display System,” Masters dissertation, Dept. Intelligent Embedded system., Malardalen University Vasteras, Sweden, MA, 2013. http://mdh.diva-portal.org/smash/get/diva2:690954/FULLTEXT01.pdf
- A. Flores, C. Hobbs, J. Stafford, S. Fischmeisters, “Safety and Security Analysis of AEB for L4 Autonomous Vehicle Using STPA,” Workshop on Autonomous System Design 2019, Dagstuhl Research Online Publication Server, DOI: 10.4230/OASIcs.ASD.2019.5
- Y. Zhu, R. Xu, H. An, A. Zhang and K. Lu, “Research on automatic emergency braking system development and test platform,” Fifth International Conference on Connected and Autonomous Driving (MetroCAD), IEEE 2022, DOI: 10.1109/METROCAD56305.2022.0000.
- B. D. Singh and H. A.Gabbar “Safety Analysis of Autonomous Emergency Braking (AEB) System,” https://faculty.ontariotechu.ca/gaber/AEB-paper.pdf.
- Y-Y. Chen and K-L. Lu, “ISO 26262 ASIL-Oriented Hardware Design Framework for Safety-Critical Automotive Systems,” The 8th IEEE International Conference on Connected Vehicles and Expo Graza Austria, November 2019, DOI: 10.1109/ICCVE45908.2019.8965235.
- L. Yang, Y. Yang, G. Wu, X. Zhao, S. Fang, X. Liao, R. Wang and M. Zhang, " A Systematic Review of Autonomous Emergency Braking System: Impact Factor, Technology, and Performance Evaluation," Journal of Advanced Transportation, vol. 13, pp. 1188089, 2022. https://doi.org/10.1155/2022/1188089
- He, X., Ji, X., Yang, K., Liu, Y. et al., "Autonomous Emergency Braking Control Based on Hierarchical Strategy Using Integrated-Electro-Hydraulic Brake System," SAE Technical Paper 2017-01-1964, 2017, doi:10.4271/2017-01-1964.
- G. Allergra, “Functional Safety for Advanced Driver-Assistance Systems,” Masters dissertation, Department of Control and Computer Engineering., POLITECNICO DI TORINO, 2017-1018. https://webthesis.biblio.polito.it/9570/1/tesi.pdf