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Function block ordering method on basis of information flow

A sorting method and technology of function blocks, applied in the direction of program control, instrument, computer control, etc., can solve problems affecting on-site production safety, control logic errors of function block diagrams, etc., and achieve the effect of clear sorting process and guaranteed safety

Active Publication Date: 2014-06-04
ZHEJIANG SUPCON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method for sorting function blocks based on information flow, to solve the problem of manual designation of the execution order of each function block in the prior art, which may easily lead to control logic errors in the function block diagram and affect on-site production safety issues

Method used

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  • Function block ordering method on basis of information flow
  • Function block ordering method on basis of information flow
  • Function block ordering method on basis of information flow

Examples

Experimental program
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Embodiment 1

[0030] Such as figure 1 As shown in FIG. 1 , it is a specific implementation flowchart of a method for sorting function blocks based on information flow disclosed in Embodiment 1 of the present invention. Its detailed process is:

[0031] Step S101: Determine the function block with no information input in the function block diagram as the initial function block, mark it as sequence number 1, and put it into the sorted state;

[0032] Wherein, for the case where there are multiple function blocks without input information in one function block diagram, the selection of the initial function block may preferably be set as the one located in the upper left corner of the function block diagram and without input information function blocks, so that sorting the entire function block diagram from the upper left corner can make the whole sorting process more organized.

[0033] Step S102: from top to bottom, traverse each functional block connected to the output terminal of the init...

Embodiment 2

[0049] Such as figure 2 As shown, it is a specific control function block diagram disclosed in Embodiment 2 of the present invention, and the control function block diagram has been sorted according to the method disclosed in Embodiment 1 of the present invention above.

[0050] Such as image 3 As shown, in order to apply the method disclosed in Embodiment 1 of the present invention, for figure 2 The process shown in the control function block diagram is sequenced. The specific steps are:

[0051] Step 1: Determine the function block A with no input information in the upper left corner of the figure as the starting function block, and mark it as the serial number 1, as shown in the figure "1#" in the lower right corner of function block A, At the same time, set function block A to the sorted state;

[0052] Wherein, in step 1, when sorting the function block diagram, the loop line connecting the first and last function blocks is ignored, that is figure 2 " / / " is marke...

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Abstract

The invention discloses a function block ordering method on the basis of the information flow, which mainly comprises the following steps: according to the information flow direction between function blocks in a function block diagram, determining an initial function block and a currently positioned function block by combining a spatial position of each function block in the function block diagram, wherein a mode of combining a mode from top to bottom with a mode from left to right is specifically adopted and a loop line for connecting the initial and tail function blocks is ignored in the ordering process; and then sequentially traversing input ends and output ends of the currently positioned function blocks from top to bottom, so that the complete ordering process is clear and accords with the information flow direction between the function blocks, and therefore, an accurate execution sequence which accords with the internal control logic can be generated and the safety of the field production is ensured.

Description

technical field [0001] The invention relates to the technical field of industrial control, in particular to an information flow-based function block sorting method. Background technique [0002] In the field of industrial control, FBD (Function Block Diagram, Function Block Diagram) is often used to write control schemes. The FBD is a graphical programming language that uses functions and function blocks to construct control strategies, which is not only intuitive but also easy to maintain. The so-called function block refers to the program block that contains the internal state, has a certain self-computing ability and can realize specific functions, and is usually represented by a rectangular block. Wherein, each function block has no less than one input terminal on the left side and no less than one output terminal on the right side. Usually the type name of the function block is written inside the function block, the name of the function block instance is written on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 曹远恩裘坤章凌吴欣
Owner ZHEJIANG SUPCON TECH
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