The intelligent driving industry is developing from a distributed function controller to a centralized domain controller, and then to a centralized one. The concept of domain controller has evolved along with the development of the electronic and electrical architecture of the vehicle. With the continuous improvement of automobile intelligence, there will be dozens or even hundreds of ECU electronic control units on each vehicle, each of which is responsible for independent functions, and then connected through CAN or LIN bus, resulting in high vehicle cost and technical difficulty. Ascension, which gave birth to the concept of domains. The so-called “domain” is to divide the automotive electronic system into several functional blocks according to their functions, and the system architecture inside each functional block is dominated by the domain controller.