| Title |
Basic Design of ECU Hardware for the Functional Safety of In-Vehicle Network Communication |
| Authors |
곽현철(Koag, Hyun Chul) ; 안현식(Ahn, Hyun-Sik) |
| DOI |
https://doi.org/10.5370/KIEE.2017.66.9.1373 |
| Keywords |
ISO26262 ; ESC(Electronic Stability Control) ; CAN(Controller Area Network) ; Functional safety ; ASIL(Automotive Safety Integrity Level) ; HARA(Hazard Analysis and Risk Assessment) |
| Abstract |
This paper presents a basic ECU(Electronic Control Unit) hardware development procedure for the functional safety of in-vehicle network systems. We consider complete hardware redundancy as a safety mechanism for in-vehicle communication network under the assumption of the wired network failure such as disconnection of a CAN bus. An ESC (Electronic Stability Control) system is selected as an item and the required ASIL(Automotive Safety Integrity Level) for this item is assigned by performing the HARA(Hazard Analysis and Risk Assessment). The basic hardware architecture of the ESC system is designed with a microcontroller, passive components, and communication transceivers. The required ASIL for ESC system is shown to be satisfied with the designed safety mechanism by calculation of hardware architecture metrics such as the SPFM(Single Point Fault Metric) and the LFM(Latent Fault Metric). |