CAN bus communication delay solving method for AUTOSAR network management and system thereof

Abstract

The invention discloses a CAN (Controller Area Network) bus communication delay solving method AUTOSAR network management and a system thereof. Applications in nodes are graded in advance according tothe importance of safe driving of the applications; according to differences of thresholds, the communication functions of the nodes of different levels are dynamically disabled, so that the purposeof real-time information transmission can be achieved by high-level applications necessary for safe driving of an automobile; and the bus load rate can be monitored when the automobile runs only by adding a corresponding management module in an existing software architecture of the system. According to the method, communication of unnecessary applications is closed under the condition that the busis high in load rate, so that the applications related to safe driving can still communicate in real time, and the dangerous driving situation possibly caused by communication delay is avoided.

Description

technical field [0001] The invention belongs to the technical field of automobile control systems, and in particular relates to a CAN bus communication delay solution method for AUTOSAR network management and a system thereof. Background technique [0002] Modern automotive electronic technology has penetrated into all aspects of vehicles, from the traditional electronic technology for important parts of the vehicle such as engines and windows to the application of many automotive electronic technologies such as lights and ADAS, the vehicle electronic control unit has also changed from the original From dozens to hundreds now. With the increasing number of control units and the increasingly complex functions of its internal application software, the complexity of the software and hardware of the car itself is getting higher and higher. In order to cope with such complex development requirements, more and more car manufacturers adopt the AUTOSAR standard as the general frame...

AI Technical Summary

Problems solved by technology

③ A node sends a network management message to indicate that the node needs to maintain the network working mode; if a node is ready to enter the network sleep mode, it stops sending network management messages, but if it receives network management messages from other nodes, It delays the transition to network sleep mode; eventually, within a certain time limit, if no more network management packets are received, each node will enter sleep mode from active mode

[0007] Although the above two methods can calculate the CAN bus load rate, they cannot be used without changing the body structure due to the need for professional instruments and the addition of master nodes, considering that the structure of the car is not easy to change

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