Deterministic scheduling method and system for realizing bus communication

A technology of bus communication and scheduling method, which is applied in the direction of transmission system, digital transmission system, electrical components, etc., can solve the problem that the security level non-real-time information and timely data transmission cannot be guaranteed, so as to reduce the network burden, ensure accuracy, and ensure timely The effect of transmission

Active Publication Date: 2013-03-20
ZHEJIANG SUPCON TECH
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Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a deterministic scheduling method and system for bus communication

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  • Deterministic scheduling method and system for realizing bus communication
  • Deterministic scheduling method and system for realizing bus communication
  • Deterministic scheduling method and system for realizing bus communication

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Embodiment Construction

[0069] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0070] The present invention realizes the deterministic scheduling method of bus communication. In order to effectively realize the real-time, deterministic and secure communication of the industrial control network and meet the communication requirements of the industrial control network, a method based on time slice division and token transfer mechanism is proposed. The master-slave trigger scheduling mechanism divides the slave nodes in the bus system into safe slave nodes and regular slave nodes according to the security level requirements, divides the control cycle into multiple communication sub-links, and preferably completes the non-real-time data communication of the safe slave nodes.

[0071]...

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Abstract

The invention discloses a deterministic scheduling method for realizing bus communication, which is used for realizing communication with determinacy and reliability in industrial control network. A bus comprises at least one master node and a plurality of slave nodes; and a plurality of safety slave nodes are determined among the slave nodes according to the requirements of safety level. The method comprises the following steps; after one control cycle, sending a non-real time communication trigger signal of the safety slave nodes to the mater node, so as to ensure that the master node carries out non-real time data communication with the safety slave nodes in sequence; after receiving the signal indicating that the master node finishes non-real time data communication with all the safety slave nodes, sending a real time communication trigger signal to the master node, so as to ensure that the master node carries out real time data communication with the slave nodes in sequence; and after receiving a signal indicating that the master node finishes real time data communication with all the slave nodes, sending a non-real time communication trigger signal to the master node, so as to ensure that the master node carries out non-real time data communication with the slave nodes in sequence. The invention further discloses a deterministic scheduling system for realizing bus communication.

Description

technical field [0001] The invention relates to the technical field of bus communication, in particular to a deterministic scheduling method and system for realizing bus communication. Background technique [0002] The industrial control network is a typical real-time application system, and its tasks are divided into periodic tasks and non-periodic tasks. Periodic tasks are triggered at certain time intervals, and have deadline requirements for task execution time; non-periodic tasks only appear when triggered at a specific time, such as device configuration, fault diagnosis, program upload / download, and running records Wait. These two tasks are reflected in the communication of the industrial control network, which are two types of communication information: real-time information corresponding to periodic tasks and non-real-time information corresponding to non-periodic tasks. [0003] Industrial control systems have high requirements for real-time network data communica...

Claims

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Application Information

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IPC IPC(8): H04L12/417H04L12/24H04L7/00
Inventor 陆卫军裘坤翁扬慧赖晓健
Owner ZHEJIANG SUPCON TECH
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