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Data transmission method and device based on time triggering mechanism

A data transmission method and a time-triggered technology are applied in the field of data transmission methods and devices based on a time-triggered mechanism, and can solve the problems of low service security and inability to process messages in time.

Active Publication Date: 2012-12-19
KYLAND TECH CO LTD
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Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a data transmission method and device based on a time-triggered mechanism to solve the problem that the data transmission operations of nodes are triggered by the occurrence of events in the existing industrial Ethernet. As a result, some messages sent by nodes cannot be processed in time, which makes the business less secure

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  • Data transmission method and device based on time triggering mechanism
  • Data transmission method and device based on time triggering mechanism
  • Data transmission method and device based on time triggering mechanism

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Embodiment Construction

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The embodiment of the present invention solves the problem of high networking cost, serious waste of bandwidth resources, and reliable network by adopting a point-to-point direct connection method in order to ensure real-time transmission of important nodes when there are multiple important nodes in the industrial Ethernet in the prior art. To solve the problem of poor performance, a data transmission method and device based on a time-triggered mechanism are proposed.

[0029] Embodiments of the present invention will be described in detail below...

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Abstract

The invention provides a data transmission method and a data transmission device based on a time triggering mechanism. The method comprises the following steps of: receiving a request message sent by each node connected with exchange equipment by the exchange equipment; determining time length corresponding to a time slice according to total bandwidth of a communication line between network nodes and total byte information contained in an acquired message to be sent of each node at a scheduling time period; determining a time period scheduling table according to the determined time length corresponding to the time slice and the total byte information contained in the message to be sent of each node; and forwarding the message of each node to the network nodes according to the time period scheduling table. According to the method, the exchange equipment adopts the time triggering mechanism to schedule each node through the formulated time period scheduling table according to data transmission demand of each node, the problem that a part of messages cannot be processed timely is solved, and the safety of service processing is effectively improved.

Description

technical field [0001] The invention relates to the technical field of node data communication in industrial Ethernet, in particular to a data transmission method and device based on a time-triggered mechanism. Background technique [0002] Industrial Ethernet is an Ethernet technology applied in the field of industrial control. Industrial Ethernet has outstanding performance in real-time, reliability, anti-interference, and operability. High communication rate is one of the outstanding features of industrial Ethernet. At present, 100M and Gigabit Ethernet have been widely used, and 1Gb / s Ethernet technology has gradually matured. Compared with the traditional fieldbus with a maximum communication rate of only 12Mb / s. Industrial Ethernet is more suitable for industrial control networks that require increasing bandwidth. [0003] Industrial Ethernet technology is widely used in industries such as smart grid, rail transit, and mining transportation, mainly because these indus...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L47/52
CPCH04L12/4015H04L12/44
Inventor 黄剑超薛百华
Owner KYLAND TECH CO LTD
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