Nowadays, the passenger cars are equipped with all kinds of electrical and electronic systems (E/E systems). These systems are mostly responsible for increasing comfort and safety enhancement. There are lots of rules for designing and manufacturing which are intended to increase the reliability of these systems. The ISO 26262 standard is the automotive adaptation of the IEC 61508 which summarizes these rules. The ISO standard deals with the functional safety and the system functions (it does not apply to components of the physical system) are listed in so-called ASIL levels (Automotive System Integrity Level) which expresses how critical the function of the given system is. The given ASIL level will tell you what requirements must be fulfilled during the design and development to provide a sufficient safety for users in case of system failure.
Our goal at Silex Zrt. is the development of a body control unit (BCU) which has the interfaces and tools that are able to communicate with each autonomous system and it is also able to do specific tasks, such as internal and external lighting control. When we design the system we consider the ISO 26262 standard and our object is to reach the ASIL B level. The main objects with this project are the demonstration and the understanding the ISO 26262 standard – the standard is only now starting to be deployed and there isn’t many resources to help understand the standard – so we will design a system for a fictional passenger vehicle and we will do limitations for the vehicle.
The company’s long-term plans include the development of vehicles that are primarily used in agriculture and industry. Each wheel on one of the axes will have direct motor and the designed BCU will do the main tasks in these vehicles.