Industrial time-sensitive network data deterministic scheduling method

Abstract

The invention relates to an industrial time-sensitive network data deterministic scheduling method, which belongs to the technical field of industrial networks and comprises the following steps that:S1: a TSN management network allocates priorities to data frames sent by industrial Ethernet equipment; S2, defining industrial data characteristics according to the data frame characteristic parameters; S3, establishing a data scheduling model at an output port of the industrial TSN switch, wherein the data scheduling model is composed of a data frame distribution module, a buffer queue and a data frame scheduling module; the data frame distribution module divides the buffer queue into eight scheduling queues according to the frame characteristic parameters; S4, distributing the data frames into different scheduling queues; S5, different shaping mechanisms are adopted for all the scheduling queues according to different determinacy and real-time requirements of the data frames; and S6, the data frame scheduling module performs output scheduling on the data frames. According to the method, the determinacy and the real-time performance of industrial CDT type data transmission are ensured, the jitter of SR type data can be effectively reduced, and meanwhile, the transmission of BE type data is allowed.

Description

technical field [0001] The invention belongs to the technical field of industrial networks, and relates to a deterministic scheduling method for industrial time-sensitive network data. Background technique [0002] At present, the architecture of the traditional factory network usually presents a "two-tier and three-tier" structure: "two-tier" refers to the existence of two technical heterogeneous networks of "factory IT network" and "factory OT network"; "three-tier" refers to According to the current division of factory management levels, the network is also divided into three levels: "field level", "workshop level", and "factory level / enterprise level". The network configuration and management strategies between each level are independent of each other. Although OT is designed to satisfy attributes such as real-time, reliability, and availability and safety-critical behaviors, these attributes are usually not considered when designing IT, so the traditional factory interc...

AI Technical Summary

Problems solved by technology

Although OT is designed to satisfy attributes such as real-time, reliability, and availability and safety-critical behaviors, these attributes are usually not considered when designing IT, so the traditional factory interconnection architecture has the following problems: 1) IT and OT network technical standards are different; 2) There are a large number of "information dead ends" in the whole process of industrial production; 3) The static configuration and rigid organization of industrial networks are difficult to meet the needs of future user customization and flexible production

[0005] Therefore, when there are a large number of different types of data in the industrial time-sensitive network, there is still a lack of a reasonable scheduling method to ensure the deterministic and real-time performance of the industrial time-sensitive network data

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