Universal extensible programming symbol modeling method

Abstract

The invention discloses a universal extensible programming symbol modeling method. The method comprises two parts of data modeling and graphic modeling. The data modeling is abstracted to one-dimensional data modeling, two-dimensional data modeling and three-dimensional data modeling. One-dimensional data, two-dimensional data and three-dimensional data are combined to form a tree-like hierarchical organization relationship, the data is accessed by using hierarchical reference names, and based on this, data definitions of symbols can be arbitrarily extended, so that self-description of the symbol modeling data is realized. For the graphic modeling, a universal attribute value display graphic element, a binary attribute rectangular display graphic element and a binary attribute round display graphic element are designed in addition to conventional basic graphic elements, association is carried out based on the hierarchical reference names and data attributes, and set values of corresponding data are displayed by using graphic symbols, so that the expressive ability of the visual graphic symbols is enhanced. According to the method, the self-description and extensibility of the visual programming symbols are realized, independent evolution of a symbol library is realized, and the visual programming symbols are decoupled from a visual programming tool.

Description

technical field [0001] The invention relates to a power system, in particular to a general scalable programming symbol modeling method. Background technique [0002] In the visual programming system, symbol modeling is the most basic work. Due to the complexity and changeability of the application system, the symbol model often changes. At the same time, when the application system expands new functions, it often needs to add symbols, and the new The data model of augmented symbols is varied and complex. [0003] There have been preliminary researches and applications on the symbolic modeling method of visual programming. Some technologies use a function block function modeling method for visual programming, and define the text segment of the function block function as seven key fields: description information, included header file content, parameter information, member variables, structure code segment, initialization code segment, and function body code segment. This me...

AI Technical Summary

Problems solved by technology

If a one-to-one specific modeling method is used for each symbol, when adding a new symbol type, since it cannot effectively support self-description and expansion, it is necessary to modify the code to support the expansion of symbol functions and interfaces, which cannot meet the new requirements. application requirements, and cannot well adapt to the interface changes of the underlying support platform

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