A public network communication method for a vehicle-mounted electronic processing unit system

Abstract

The public network communication method of a vehicle-mounted electronic processing unit system described in the present invention divides each functional module in detail according to its functional characteristics and data characteristics through data types, function types, and module numbers, and is the vehicle-mounted electronic processing unit system. Sufficient space is reserved for future development. By extracting the common parts of CAN network and Ethernet, the public network communication method formulated by this patent makes the basic structural content such as the nominal symbol, data type, function type, module number and parameter number of each functional module completely unified, and communicate with each other , so as to realize the data interoperability and resource sharing between the vehicle-mounted electronic processing unit host and each functional module, as well as among the functional modules, and solve the problem that the products in the vehicle-mounted computer system (or vehicle-mounted electronic products) on the market are messy and independent of each other , mutual incompatibility, single function, resources cannot be shared and many other problems.

Description

technical field [0001] The invention relates to a communication method, in particular to a public network communication method of a vehicle-mounted electronic processing unit system. Background technique [0002] SAE J1939 is based on the Controller Area Network (CAN: Controller AreaNetwork) developed by Bosch, Germany, and is recommended by the Society of Automotive Engineers (SAE) as a network communication standard between electronic components on heavy-duty road vehicles. It describes a network application of heavy vehicle fieldbus, including CAN network physical layer (J1939-11), data link layer (J1939-21), network layer (J1939-31), application layer (J1939-71), Protocols such as fault diagnosis (J1939-73) and network management (J1939-81), the communication rate can reach 250Kbps. SAE J1939 is widely used in commercial vehicles, ships, rail vehicles, agricultural machinery and large engines. The Ethernet technology was originally created by Xerox, and has gradually b...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a public network communication method of the vehicle-mounted electronic processing unit system to solve the problems that the current vehicle-mounted electronic peripheral function modules are independent of each other, incompatible with each other, and resources cannot be shared.

Images