The Body High Performance Computer fulfills central requirements such as consistent hardware/software separation by means of the basic software developed by Elektrobit based on adaptive AUTOSAR and virtualization (multiple operating systems on four virtual ECUs). This leads to an efficient and flexible, security concept (ASIL, non-ASIL) and fulfils the requirement for new business models and the integration of numerous software sources.
The hardware of the HPC includes a microprocessor with external memory and multi-core technology. The HPC provides high-speed data interfaces and supports virtualization using hypervisor technology. The communication architecture is designed for service orientation. The middleware also supports connectivity via Gigabit Automotive Ethernet, which provides the necessary data throughput for the applications. The HPC also handles coordination of the connection to a backend and the applications available there. With regard to future applications such as automated driving, the HPC has already been designed for the fusion of sensor data.
By maintaining sufficient memory and processing power (in the HPC currently, typically more than 10 K DMIPS – Dhrystone Million Instructions Per Second), it is possible to flash new software or update existing software at any time.
The Body HPC combines the functions of a gateway with the functional scope of a body controller in a powerful unit and supports the development of x-domain function integration. For the implementation layer of the Zone Control Units under the HPC, the server is also the interface for the traditional hardware and software inputs.
The server/zone architecture can be used to clean up the existing E/E system in the vehicle. Reduction in stand-alone ECUs and wiring harness allow an overall EEA optimization, leading to less weight and CO² emissions. The high computing power of Body HPC enable central hosting of vehicle functions, leading to standardized and cost-effective components and functions.
As a server, the computer offers the possibility to install additional functions from different sources over-the-air after the end of the vehicle production line. Therefore, the HPC initially appears oversized, because the existing computing power as well as the memory volume are initially only partially utilized.
However, the maintained power buffer makes the HPC future-proof for years to come and enables the subsequent realization of new data and service-based business models (feature upgrades, new functions).