JP2014228905A - Modeling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change an object without needing replacement of a link between the changed object and an object which is a connection destination thereof and is not changed, in a modeling method of a graph comprising points and lines.SOLUTION: In a modeling method, a modeling device represents a model structure constituting a graph or related information as a model class that is an abstract class, and the graph is configured by: a point class 12 succeeding to the model class 11, and representing a point; a line class 13 succeeding to the model class 11, and representing a line; a connection relationship relation 14 which is relationship between the point class 12 and the line class 13 and represents connection relationship between the point and the line; an information class 15 of the point that is the abstract class of a class representing a characteristic of each kind of the point; an information class 16 of each point succeeding to the information class of the point, and having a characteristic of each point; and a point kind relation 17 which is relationship between the point class and the information class of the point and represents the kind of the point.

Description

  The present invention relates to a method for modeling a graph composed of points and lines.

  For example, as shown in FIG. 8, a conventional model structure 11 of a graph composed of points and lines includes a “point” class 12 such as “circle”, “triangle”, and “square”, and “point” and “ The “line” class 13 connecting the “points” is classified, and the connection relationship between the “point” and the “line” is expressed by the “connection relationship” 14 between the “point” class and the “line” class.

  When increasing the type of “point”, it is only necessary to define it as a subclass of a point representing that type. For example, the “star” class in FIG. 8 is an example.

  FIG. 9A is a graph in which there are “circle 41” and “triangle 42” as points, and a “line 43” is connected between them. When creating a graph as shown in FIG. 9A, the model structure creates a “circle” object 41, a “triangle” object 42, and a “line” object 43, as shown in FIG. 9B. A connection relationship is created for each of the “circle” object 41 and the “line” object 42, and the “line” object 43 and the “triangle” object 42.

  Patent Document 1 is a piping system modeling method, and a point object as a single element corresponding to a branching junction and equipment (valves, pumps, tanks, etc.), and a plurality of pipes and equipment existing between the point objects. Are divided into interval objects as composite elements that collectively represent.

JP-A-7-103400

  FIG. 10 is a diagram illustrating a conventional model change example. When the “triangle 42” in FIG. 10A is changed to the “square 42” as shown in FIG. 10C, the following procedure is performed.

  As shown in FIG. 10D, (1) first, the “triangle” object 42 is deleted, and (2) next, the “square” object 42 is generated. (3) Finally, the connection relationship between the “line” object 43 and the “triangle” object 42 is changed to the connection relationship between the “line” object 43 and the “square” object 42.

  Thus, when changing the type of the “point” object, it is necessary to change the connection relationship between the “point” object and the “line” object in addition to changing the “point” object itself. For this reason, the “line” object that is not changed is also affected by the type change in the “point” object, and it is necessary to change the link to the “point” object of the connection destination.

  As shown above, when changing an object in the model structure of a graph composed of points and lines, the link between the changed object and the unchanged object that is the connection destination is changed. Providing a modeling method that does not need is a challenge.

  The present invention has been devised in view of the above-described conventional problems. One aspect of the present invention is a modeling method for expressing a model structure and related information constituting a graph as a model class which is an abstract class by a modeling device. Inheriting the model class, the point class representing the point, the line class representing the model class, representing the line, and the relationship between the point class and the line class represents the connection relationship between the point and the line A point information class that is an abstract class of a class that represents a connection relation and a feature for each type of point, an information class of each point that inherits the point information class and has a feature of each point, and the point A graph is constituted by a point type relation indicating a point type in the relationship between the class and the point information class.

  Also, as one aspect thereof, a point class of a piping system that inherits the point class and represents a point of the piping system, a piping class that inherits the line class and represents piping of the piping system, and an information class of the point Inherit, the reservoir class having the characteristics of the distribution system of the piping system and the information class of the point, the pump class having the characteristics of the pump of the piping system, and the information class of the point, and A graph of the piping system is constituted by a valve class having the characteristics of the valve.

  According to the present invention, in a modeling method of a model structure of a graph composed of points and lines, an object can be displayed without changing the link between the changed object and the unchanged object to which the changed object is connected. It becomes possible to change.

It is a figure which shows the model structure in a basic composition. It is a block diagram which shows the modeling apparatus in a basic composition. It is a figure which shows the graph and model in a basic composition. It is a figure which shows the example of a change of the model in a basic composition. 3 is a diagram illustrating a model structure in Embodiment 1. FIG. FIG. 3 is a diagram illustrating a graph and a model in the first embodiment. It is a figure which shows the example of a change of the model in Embodiment 1. FIG. It is a figure which shows an example of the conventional model structure. It is a figure which shows an example of the conventional model. It is a figure which shows the example of a change of the conventional model.

  Hereinafter, a basic configuration and an embodiment of a modeling method according to the present invention will be described in detail with reference to FIGS.

[Basic configuration]
FIG. 1 is a diagram showing a basic configuration of a model structure in the present invention. As shown in FIG. 1, the basic structure of the model structure includes the following elements.
(11) Model class: abstract class representing a model constituting a graph (12) “Point” class: inheriting the above model class, class representing “point” (13) “Line” class: inheriting the above model class , Class representing “line” (14) Connection relationship: Relationship between “point” class and “line” class, relationship representing connection relationship between “point” and “line” (15) “Point information” class: Abstract class that represents the characteristics of each type of “point” (16) Information class of each point: a class that inherits the above “point information” class and represents the characteristics of each point. For example, “round” class has radius as “round” feature, “triangle” class has “triangle” feature with side length and angle, and “square” class has “square” feature. As the side length. Each may have characteristics other than those described above. (17) Point type relation: Relation between the “point” class 12 and the “point information” class 15 and representing the kind of point.

  As shown in FIG. 2, the modeling device 50 is configured by a computer (computer or the like), and is a normal computer hardware resource, that is, a ROM (Read Only Memory) 51 in which various programs, various parameters, and the like are stored in advance. A CPU (Central Processing Unit) 53 that controls the overall operation of the modeling device 50, a RAM (Random Access Memory) 52 that is used as a work area when the CPU 53 executes various programs, and a communication interface that transmits and receives various types of information to an external device. (I / F) 54, which is composed of a keyboard, a mouse, and the like, and includes an external input device 55 that receives input of various operations, an external output device 56 such as a display, an external storage device 57 such as a hard disk, and the like. That.

  As a result of the cooperation between the hardware resource and the software resource, as shown in FIG. 2, the modeling apparatus 50 uses the “point” class 58 a, “line” class 58 b, and connection relations in the object creation unit 58 of the CPU 53. 58c, an abstract class 58d of “point”, an information class 58e of each point, a point type relation 58f, etc. are expanded in the RAM 52, and the expanded “point” object 52a, “line” object 52b, information object 52c of each point The connection relation related object 52d and the point type related object 52e are processed to create a graph.

  The information developed in the RAM 52 can be stored as “created model” and “operation history” in the external storage device 57 by the CPU 53, and “created model” stored in the external storage device 57 and The “operation history” can be expanded in the RAM 52 by the CPU 53.

[Example of basic configuration model]
As shown in FIG. 3A, consider a graph connecting “circle 1” and “triangle 2” with “line 12”. The object expressing “circle 1” shown in FIG. 3A creates a “point 1” object and a “circle” object as shown in FIG. Link objects with point types.

  Similarly, as the object representing “triangle 2” in FIG. 3A, a “point 2” object and a “triangle” object are created as shown in FIG. Link “triangular” objects in relation to point types. The object expressing “line 12” in FIG. 3A creates a “line 12” object as shown in FIG.

  In order to express the connection between “Circle 1” and “Line 12” shown in FIG. 3A, the “Point 1” object and the “Line 12” object among the objects representing “Circle 1” are illustrated. As shown in 3 (b), links are made in connection relations.

  Similarly, to express the connection between “triangle 2” and “line 12” in FIG. 3A, among the objects representing “triangle 2”, the “point 2” object and the “line 12” object Are linked in connection relation as shown in FIG.

[Example of change]
FIG. 4 is a diagram illustrating a model change example of the basic configuration. Consider a case where “triangle 2” in FIG. 4A is changed to “square 2” as shown in FIG.

  As in the case of FIG. 3, the object expressing “circle 1” in FIG. 4A creates a “point 1” object and a “circle” object as shown in FIG. 1 ”object and the above“ circle ”object are linked in relation to the point type.

  Similarly, as the object representing “triangle 2” in FIG. 4A, a “point 2” object and a “triangle” object are created as shown in FIG. Link “triangular” objects in relation to point types.

  The object representing “line 12” in FIG. 4A creates a “line 12” object as shown in FIG. 4B.

  In order to express the connection between “Circle 1” and “Line 12” in FIG. 4A, among the objects representing “Circle 1”, the “Point 1” object and the “Line 12” object are represented in FIG. As shown in (b), link in connection relation.

  Similarly, in order to represent the connection between “triangle 2” and “line 12” in FIG. 4A, among the objects representing “triangle 2”, the “point 2” object and the “line 12” object are As shown in FIG. 4B, the links are linked in connection relations.

  Here, when “triangle 2” is changed to “square 2” as shown in FIG. 4C, as shown in FIG. 4D, (1) first, the object representing “triangle 2” is displayed. Among them, the “triangle” object is deleted. (2) Next, only the “square” object among the objects expressing “square 2” is generated. (3) Finally, among the objects representing “triangle 2”, the point type relationship between the “point 2” object and the “triangle” object is the point type between the “point 2” object and the “square” object. Change to related.

  As described above, according to the basic configuration of the present invention, the “point” type change processing can be configured only by processing to “point”, which is necessary in the conventional method as shown in FIG. Further, the connection relationship changing process to “line” accompanying the change of the type of “point” is not required. That is, it is not necessary to change the connection relationship of the “line 12” object.

  Further, when increasing the number of “points”, it is only necessary to add a concrete class that inherits the information of “point”, in the same way as a concrete class that inherits the conventional “point” class.

[Embodiment]
FIG. 5 shows the model structure of the piping system.

  By inheriting the “point” class 12 and the “line” class 13, a “pipe system point” class and a “pipe” class are prepared, respectively.

  By inheriting the “point information” class 15, a “reservoir” class, a “pump” class, and a “valve” class are prepared for the type of “piping system points”. There may be classes for other types of points. As characteristics of the information class 15 at each point, the “reservoir” class has a water distribution amount, the “pump” class has a rotation speed, and the “valve” class has an opening. Each may have features other than the above.

  Fig.6 (a) is a figure which shows the graph of a piping system. As shown in FIG. 6A, consider a graph of a piping system in which “reservoir 1” and “pump 2” are connected by “piping 12”, and “pump 2” and “valve 3” are connected by “piping 23”. .

  The object representing “reservoir 1” in FIG. 6A is created by creating a “piping system point 1” object and a “reservoir” object as shown in FIG. Link the “1” object and the “reservoir” object in relation to the point type.

  Similarly, as the object representing “pump 2” in FIG. 6A, a “pipe system point 2” object and a “pump” object are created as shown in FIG. Link the 2 ”object and the“ pump ”object in a point type relationship.

  Similarly, an object representing “valve 3” in FIG. 6A creates a “pipe system point 3” object and a “valve” object as shown in FIG. Link the “Point 3” object and the “Valve” object in relation to the point type.

  The object expressing “pipe 12” in FIG. 6A creates a “pipe 12” object as shown in FIG. 6B. Similarly, an object representing “pipe 23” in FIG. 6A creates a “pipe 23” object as shown in FIG. 6B.

  To represent the connection between “reservoir 1” and “pipe 12” in FIG. 6A, among the objects representing “reservoir 1”, the “pipe system point 1” object and the “pipe 12” The objects are linked in connection relation as shown in FIG. Similarly, in order to express the connection between “pump 2” and “pipe 12” in FIG. 6A, among the objects representing “pump 2”, the “pipe system point 2” object and the “pipe 12” above. The objects are linked in connection relation as shown in FIG.

  Similarly, in order to express the connection between “pump 2” and “pipe 23” in FIG. 6A, among the objects representing “pump 2”, the “point 2” object of the piping system and the “pipe 23” are displayed. ”Link the objects in connection relation as shown in FIG. Similarly, in order to express the connection between “valve 3” and “pipe 23” in FIG. 6A, the “pipe system point 3” object and the “pipe 23” among the objects representing the “valve 3”. The objects are linked in connection relation as shown in FIG.

  FIG. 7 is a diagram illustrating an example in which the type of “piping system point” is changed. In FIG. 7, the case where “pump 2” is changed to “valve 2” in the graph of the piping system of FIG.

  As shown in FIG. 7 (d), (1) First, the “pump” object is deleted from the objects representing “pump 2”, and (2) next, among the objects representing “valve 2”. Create only a “valve” object. (3) Finally, among the objects representing “pump 2”, the point type relationship between the “pipe line point 2” object and the “pump” object is referred to as the “pipe line point 2” object and the “pump line point 2” object. Change to the point type relationship with the “valve” object.

  As described above, according to the present embodiment, in the model structure of a graph composed of “points” and “lines”, a “point information” class is prepared for each type of “point”, and “point” By expressing the type of the item in relation to the “Point Information” class instead of the “Point” class, when changing the “Point” type, the relationship between the above “Point” class and the “Point Information” class Will be changed, and it will not affect the class other than the “point” that is the change target.

  Further, when increasing the number of “points”, it is only necessary to add a concrete class that inherits the information of “point”, in the same way as a concrete class that inherits the conventional “point” class.

11 ... Model class 12 ... Point class 13 ... Line class 14 ... Connection relation 15 ... Point information class 16 ... Information class for each point 17 ... Point type related

Claims (2)

A modeling method for expressing a model structure and related information constituting a graph as an abstract class by a modeling device,
A point class that inherits the model class and represents a point;
A line class that inherits the model class and represents a line;
A connection relationship related to a connection relationship between a point and a line in the relationship between the point class and the line class, and
A point information class that is an abstract class of a class that represents the characteristics of each type of point,
Inheriting the point information class, each point information class having the characteristics of each point;
In the relationship between the point class and the information class of the point, a point type relation indicating the type of the point,
A modeling method characterized by composing a graph by: Inheriting the point class, the point class of the piping system representing the point of the piping system,
A pipe class that inherits the line class and represents the pipe of the pipe system;
Reservoir class that inherits the information class of the point and has the characteristics of a distribution reservoir in the piping system,
Inheriting the information class of the point, the pump class having the characteristics of the pump of the piping system,
A valve class that inherits the information class of the point and has the characteristics of a valve of the piping system,
The modeling method according to claim 1, wherein a graph of a piping system is configured by the following.

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