Apr 12, 2022
In General Discussions
As a technology enthusiast, my favorites are smart hardware, smart cars, and virtual reality. The purpose of writing this series is to sort out what I have learned, thought, and thought over the past few years, so as to form a complete knowledge system for your reference. It will tell about the current status and future of products, technologies, and business in the automotive field. For practitioners related to automotive electronics, everything is oriented by electronics and electrical, and only by understanding, learning, and judging the development of electrical and electronic architecture can they have a more intuitive understanding of the future competition relationship and development trend of their own products. When we say job title email list electrical and electronic, what are we talking about? Electronic and electrical architecture is an abstract concept that defines the relationship between automotive electronic components, the relationship between the logical functions of all electronic components, and various principles for designing and maintaining these electronic components. The development of electronic and electrical architecture also follows "What is the relationship between vehicle regulations and AEC-Q? "The "V"-shaped development process of ISO26262 mentioned in . 4 core problems solved by electronic and electrical architecture design 1. Communication network topology The network topology is the communication relationship between various controllers on the car, and the communication relationship between the controllers is designed according to the network topology. For example, mesh topology, star topology, ring topology, and more often, different forms of heterogeneous network forms are used in different fields. Heterogeneous networks inevitably bring about gateways, protocol conversions, and different message forms according to different physical characteristics. 2. Power Network Topology Even if it is electronic and electrical, all equipment is facing the need for power supply. There must be hundreds of controllers, sensors, actuators, etc. on the vehicle. The arrangement and physical connection relationship of various fuses and relays on the vehicle body constitute the electrical topology. POE will be introduced during the popularization of Ethernet technology, and Tesla has also optimized the electrical topology by redesigning the cable structure. 3. Logical topology (functional and technical architecture) It is used to describe how the various functions of the car are divided, which functions are in which area, and which sub-functions are arranged in which controller. This includes the recombination of hardware products and the redistribution of software functions. 4. Software Model To describe the basic software and application software, the AutoSAR standard defines the basic software and the standard interface between it and the application software, including hardware abstraction software, drivers, operating systems, communication software, etc. The application software is divided into functional software and control software. Electronic and electrical will also define content related to space, installation, etc., but for those entering the Internet industry, you can temporarily ignore it.