In the future, there will be more and more interactions between the car’s in-vehicle system and the cloud back-end architecture. The two can be connected via WIFI or a high-bandwidth 5G network. Due to the need for safety and automatic driving functions, vehicles need to have the ability to interact with external information, such as surrounding vehicles, new-generation infrastructure, weather, road information, and real-time high-precision maps. Since the software algorithm and basic hardware computing power of the car will be limited to a certain extent, as the amount of data increases, it will gradually become more difficult to make real-time analysis and decision-making on changing scenes and driving conditions. It is increasingly necessary to interact with high-processing backends (such as cloud servers) to obtain relevant information and data in driving scenarios.
The so-called “functional safety” is a general term for technologies that avoid unacceptable functional risks through safety functions and safety measures. The “function” of Function Safety refers to the role of safety devices that monitor controlled objects and controllers. Usually we use a computer as a safety device, if the controller fails, the computer will shut down the controlled object and warn the user of the danger. The safety effect achieved by the safety device is called “functional safety”. Functional safety can be said to be safety measures designed by using safety devices such as computers.