What does the CAN bus of a car mean? Put it in a popular way.

CAN is the abbreviation of Controller Area Network (CAN), which was developed by Bosch Company in Germany, which is famous for developing and producing automotive electronic products, and finally became an international standard (ISO 1 1898), and it is one of the most widely used field buses in the world. In North America and Western Europe, CAN bus protocol has become the standard bus of automobile computer control system and embedded industrial control LAN, and has J 1939 protocol designed for large trucks and heavy machinery vehicles based on CAN.

CAN is the abbreviation of Controller Area Network (CAN) and is an ISO international standardized serial communication protocol. In the automobile industry, various electronic control systems have been developed for the requirements of safety, comfort, convenience, low pollution and low cost. Because the data types used in communication between these systems and the requirements for reliability are different, there are many cases of multi-buses, and the number of wire harnesses also increases. In order to meet the needs of "reducing the number of wire harnesses" and "carrying out high-speed communication of a large amount of data through multiple LANs", the German Electric Company 1986 Bosch developed the CAN communication protocol for automobiles. Since then, CAN has been standardized by ISO/KOOC-0//KOOC-0/898 and ISO/KOOC-0//KOOC-0/5/KOOC-0/9, and has become the standard protocol of European automobile networks.

The high performance and high reliability of CAN have been recognized and widely used in industrial automation, ships, medical equipment, industrial equipment and other fields. Fieldbus is one of the hot spots in the field of automation technology development, and it is called computer local area network in the field of automation. Its appearance provides strong technical support for distributed control system to realize real-time and reliable data communication between nodes.