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Control method of industrial multiunit coherent communication network

A technology of communication network and control method, which is applied in the field of digital communication network structure, can solve problems such as reducing transmission speed, and achieve the effect of synchronous consistency control

Inactive Publication Date: 2013-02-13
浙江易栋电子有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

One reason is that all common industrial communication standards are serial, which will result in the number of nodes multiplied by the transmission speed to complete the transmission of information, and another reason is that long transmission distances will reduce the feasible transmission speed, such as RS485 at 1200 meters The transmission distance is roughly only 100Kbps

Method used

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  • Control method of industrial multiunit coherent communication network

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Embodiment Construction

[0010] Such as figure 1 As shown, the multi-unit nodes are divided into multi-layer node layout: each layer of nodes is connected to the next layer of nodes with an independent serial port, the same layer of nodes and the upper layer of nodes are arranged at equal angles in space, or each layer of the same layer The nodes are equidistantly arranged on the same straight line. Nodes on each layer continuously send signals to each lower layer node below it in order from near to far, and then receive signals from each lower layer node below it in order from near to far.

[0011] The number of communication nodes in each layer of the first layer: The number N1 of communication nodes in the first layer is determined by the minimum transmission loop time Tdmax acceptable for system control and its feasible maximum transmission baud rate B1.

[0012] The formula is N1=(Tdmax*B1 / 8) / (x+y), where x and y are respectively the number of bytes required by the master for sending and receivi...

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Abstract

The invention relates to a control method of an industrial multiunit coherent communication network, belonging to the field of industrial automatic control. In the method, multiunit sub nodes are arranged in a multi-layer node mode, each layer of nodes is respectively connected with nodes at a next layer through an independent serial port, the nodes at a same layer and the nodes at a last layer are spatially arranged in an equiangular mode, or the nodes at the same layer are arranged with the same distance on the same line; and each layer of the nodes continuously sends messages to the nodes of each next layer below the layer in an order from the near to the far and then receives signals of the nodes of each next layer based on the order from the near to the far. The invention carries out level-division communication management on all units, thereby realizing the industrial control requirements of long distance and high synchronism which are difficultly realized by ordinary single serial port communication in large-scale networks of thousands of points and the like and realizing synchronization coherent control to multiple units.

Description

technical field [0001] The invention relates to the technical field of communication network, which is a digital communication network structure in which multi-unit actions are coordinated and consistent in industrial automation control, and belongs to the field of industrial automation control. Background technique [0002] In the automatic control and production of industrial mining, textile industry, etc., there are often many devices that need to coordinate and work together. Many of the working conditions require sequential actions in time, but in some cases, the actions of multiple devices are required to have the ability to be synchronized in time. For example, in the textile industry, the spindles of fine spinning machines are the most widely used equipment. In the early equipment, through the transmission of mechanical gears and pulleys, the speed of each spindle is synchronized with the main drive shaft, which can ensure that the spun yarns on all the spindles pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06
Inventor 周斌欣
Owner 浙江易栋电子有限公司
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