Decomposition of horizontal functional safety requirements of HNP based on GSN
Aiming at the lateral functional safety goal of avoiding the unexpected lateral movement of the vehicle controlled by the HNP function,this paper uses the goal structuring notation to decompose the safety goal to derive the functional safety requirements.Firstly,the goal structuring notation is used to decompose the safety goal to derive the functional safety requirements;Secondly,the swimlane diagram is used to show the allocation of safety strategies in the architectural elements and the specific elements that need to be implemented by these safety strategies;Finally,the safety requirements of different architecture elements including actuator EPS,camera,radar and ADS domain controller are described.