Network control method based on CAN bus

Abstract

The invention discloses a method of network control based on a CAN bus; the bus network is divided into five states of uninitialization, stop, start, hibernation and closing of the bus, the executable operation in each state is limited and how to change from one state into another state is formulated. The invention provides transition conditions among the states, and more flexible use for the CAN network can be realized and glitches of software and hardware of the CAN network can be detected in real time by controlling and managing uniformly the operating mode state. By using the method, the state of the network and a subcontroller can be managed effectively and data is transmitted in the condition of available network resources and reliable lines, thus improving the stability of the system.

Description

technical field [0001] The invention relates to an embedded real-time control system in the computer field, and more specifically relates to a CAN bus-based network control method. Background technique [0002] A real-time system refers to a system that will cause serious consequences if there is a deviation in logic and timing. It is widely used in the fields of factory production process control, automobile industry, office automation, computer peripherals, communication equipment, robotics, aerospace and civil consumption. In the real-time control system, the bus network is mainly used for communication. It generally refers to the communication between electronic control units through the network layer, link layer, physical layer, etc. For embedded real-time control systems, the communication between electronic control units is very necessary and important. The speed and reliability of the communication system directly affect the performance and driving safety of the car...

AI Technical Summary

Problems solved by technology

[0004] In the current CAN bus network system, the methods related to network management are still very limited, and it is impossible to provide a unified management method for the bus network and all CAN controllers connected to the network, which increases the complexity of the system, and when errors occur It cannot be monitored and managed uniformly, and there are many inconveniences in practical application.

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