JP2951822B2 - Data management apparatus and graphic data management method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data management apparatus for managing graphic data such as topographic maps and equipment maps used for design management of electric power, gas, water and sewage facilities and the like and attribute data thereof, and a division system The present invention relates to a method for managing graphic data to be managed.

[0002]

2. Description of the Related Art FIGS. 15 and 16 show an example of a design support system in the construction design of electric power, gas, water and sewage facilities and the like.
There is a configuration shown in FIG. FIG. 15 is a block diagram showing the overall system configuration. In the figure, reference numeral 1 denotes a server serving mainly as a means for managing data transfer, reference numeral 2 denotes a database, and reference numeral 3 denotes a plurality of design terminals connected to the server 1 by lines. FIG. 16 is a diagram showing details of information stored in the database 2. The database 2 includes design drawing information (basic drawing information) 2a, such as topographic maps and equipment maps as graphic data, necessary for designing. Stores construction management information 2b of construction process and the like, attribute information 2c of graphic data, integrated information 2d such as construction estimate and the like. In addition, a design drawing data storage means 4 for storing design drawing data such as already-designed drawing data and updated design drawing data is provided.

At the time of designing, a designer accesses the server 1 to fetch the already-designed drawing data into the terminal 3 from the design drawing data storage means 4, and updates the design using information such as the design drawing information 2a.

Conventionally, a method of managing (variable length) graphic data, such as a topographic map and a facility map, in association with attribute information 2c as design drawing information is performed by using an index file having a file number and a record number. In addition to the case where the information is managed by using a table, the case where the information is managed by using a table structure is used. FIG. 17 is a diagram showing an example of data storage in a conventional data management method (table structure management) disclosed in Japanese Patent Application Laid-Open No. 62-162170.
, Character information (code data), and a map number for image data are stored in the same table / record, and links between images, vectors, and code data (attribute information) are realized.

[0005]

According to the conventional data management method, in the case of an index file, index information must be simultaneously managed in order to link graphic data and its attribute information. The index information must be changed with the change, and the management method is complicated. Also, when managing with a table structure,
When data larger than the size of the vector data 12 defined in the table (for example, data composed of many line groups) is inserted, the data overflows. If the size of the data storage area of the vector data 12 is defined in consideration of this, an unnecessary area 12h occurs in a record of a small amount of data as shown in FIG. 18, resulting in inefficient data management. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a data management device which can efficiently manage graphic data and can easily link graphic data and its attribute data. With the goal. Another object of the present invention is to provide a graphic data management method capable of optimally managing graphic data to be divided and managed in accordance with a drawing using the graphic data.

[0007]

The data management apparatus according to claim 1 SUMMARY OF THE INVENTION, the power, gas, topographic requiring the construction design of water and sanitation, etc., graphic data storing means for storing graphic data such as facilities Figure A storage length setting means (data management software 1b) for setting the data storage length of each area in advance to a certain length, and, when the graphic data covers a plurality of areas, the graphic data covering the plurality of areas Data management means (data management software 1b) for managing based on the serial number information and the graphic element continuation information . The graphic data management method according to claim 2 is based on specific crossover information (crossover flag 51).
Graphic data such as topographic maps and equipment maps that span a plurality of unit drawings (mesh unit drawings 50) are stored and managed in a plurality of unit drawings, respectively, or the graphic data is divided into a plurality of unit drawings. Whether to store and manage each of them or to store and manage the graphic data in one unit drawing is selected.

[0008]

[0009]

[0010]

[0011]

In the data management device of the present invention, the data storage length of each area of the graphic data storage means is previously unified to a fixed length by the storage length setting means. Here, when one piece of graphic data is large data, or when one piece of graphic data has one meaning, such graphic data is stored over a plurality of areas. Therefore, the graphic element serial number information and the graphic element continuation information are added to the data of each area of the graphic data stored over a plurality of areas as described above, and the data of each area is stored on the basis of the information. And are managed as one meaningful graphic data . According to the graphic data management method of the present invention, it is possible to select a graphic data management method based on specific crossover information according to the type of drawing.

[0012]

[0013]

[0014]

[0015]

EXAMPLE 1. An embodiment of the data management device of the present invention will be described below with reference to FIGS. FIG. 1 shows a simplified configuration diagram of a data management device of the present invention. Referring to FIG. 1, reference numeral 1A denotes a server, which includes a graphic editing / image processing software 1a and a data management software 1b in addition to performing data transfer management. Reference numeral 2A denotes a variable-length relational database which stores various information shown in FIG. 16, and which corresponds to the design drawing information 2a, includes vector data or image data as graphic data, and attribute data of these data. (Attribute information 2c) and the like.

The data management software 1b functions as both a storage length setting unit and a data management unit. That is, the data management software 1b
As shown in FIG. 2, the data storage length x of each area of the graphic data storage means (storage area in the database 2A) for storing the graphic data 2d is set according to the length of each graphic data. The graphic data 2d and its attribute data 2e are associated with key information 2f,
2g (consolidated information).

That is, in the first embodiment, since the area of the graphic data of the variable length type is defined according to the length of the graphic data 2d, the unnecessary data area 2h in each area is not physically secured. Data storage devices can be used efficiently. (In other words, the graphic data can be efficiently managed.) Further, since the graphic data 2d and the attribute data 2e can be linked to each other based on the key information 2f, 2g, there is no need to manage special index information and the like. , Simplifying management for links.

Embodiment 2 FIG . In the first embodiment, the storage length x of each area data for storing the graphic data is set according to the length of each graphic data. In the second embodiment, the data management software 1 b The information storage length x of each area in the data storage means is set to a fixed length, and when the graphic data covers a plurality of areas, the graphic data covering the plurality of areas is transferred to the graphic element serial number information and the graphic element continuation. It is managed based on the information .

Next, a second embodiment will be described with reference to FIGS.
Will be described in detail. For example, the data table configuration example shown in FIG. 3 is an example of a data configuration in a case where each graphic data has attribute data and the graphic data group also has certain information. Here, there is a plurality of graphic data in one facility (the symbol A in FIGS. 3 and 5).
A description will be given of a case where a plurality of equipment groups have one attribute (the same number 1 indicated by a symbol B) as shown in FIG. An item of equipment key 20f, 20g (connection information) is provided as a management key for each equipment, and an item of group keys 21f, 21g, 21m (connection information) is provided as a management key of the equipment group. Further, when there is a plurality of graphic data in one facility and
A graphic element serial number and a graphic element continuation flag 22 (continuation information) are provided as keys used when the size of the graphic data of the equipment exceeds the size defined in the table. When processing is performed in units of equipment, the equipment attribute information table and the drawing information table are searched based on the equipment keys 20f and 20g, and related equipment information is fetched, updated, and deleted. For example, when processing data in which the equipment keys 20f and 20g are 1, as shown in the flow of FIG. 6, the equipment attribute information and the drawing information table are searched (steps S1 and S2).
If there are multiple records of the searched drawing information data, sort them in the order of the graphic element serial number and check if there is no data with the same graphic element serial number,
Among the retrieved data, data having a continuation flag of 0 (no graphic element continuation) has only one record, and a logical check is performed to determine whether or not the graphic element serial number matches the number of retrieved data (step S3). If there is, the drawing data is corrected (step S4), and the logic check is performed again (step S3). If there is no error, the equipment attributes are changed, the drawing data is edited, and the like (step S5), and each table is updated (step S6). When processing is performed on a group basis, the group keys 21f, 21g,
Based on 21m, the group information table, the equipment attribute information table, and the drawing information table are searched, and the information is updated. The graphic data has a management unit 23 as shown in FIG. 4 for each graphic element, classifies the data structure, and manages the data structure classification, the number of coordinate points, the data length, the number of characters, the layer, and the like. . Therefore, data of a plurality of structure types such as symbols, line groups, characters, and images can be registered in one drawing information table.

Further, graphic data of a topographic map such as contour lines as shown in FIG. 7, that is, a line group having a large number of coordinate points (FIG. 1)
When the data amount of one graphic element is large and overflows the data size defined in the table as in (4), the graphic element continuation flag 24 (continuation information) as shown in FIG.
Is set to 2 to perform record division. This gives 1
Recognition of the configuration of graphic data when there are multiple graphic data for one graphic (multiple records may occur due to the presence of multiple graphic elements, or the division of graphic elements may occur because the amount of one graphic element data will overflow. And so on).

That is, according to the second embodiment, it is not necessary to perform complicated management simply by setting a management key (consolidation information) such as a group key and a facility key in each data table. A management system can be established, and man-hours spent on design can be significantly reduced. Also, in the case of large data that overflows, such as line group data such as contour lines of a topographic map, or in the case of data such as symbols and numbers that make one meaning with a plurality of graphic elements, the continuation flag (continuation flag) Information), efficient data management can be performed.

Embodiment 3 FIG . Next, management of image data and vector data as graphic data will be described with reference to FIGS.
In the third embodiment, image data and vector data are separately stored as an image data group 30A and a vector data group 30B as representing the same graphic data, and the key information is used by the data management software 1b using the key information. , Corresponding image data and vector data are connected to common attribute data in the attribute data group 31 and managed.

That is, as shown in FIG. 9, vector data and image data have the same structure with the same key information 30.
By using f, 30g, and 30m, related data can be easily extracted, data can be corrected, and new data can be easily created. This is the graphic editing software 1a shown in FIG.
As a result, as shown in FIG.
, And a vector correction 30b is performed, and if necessary, editing such as adding characters is also performed. That is, the image data can be corrected by moving the data of the image hierarchy to the vector hierarchy and performing vector correction. It is also possible to correct the image of the vector data. This can be performed by extracting vector data and attaching it to the original image layer after image conversion. The same applies to the creation of new data.

Depending on the shape indicated by the data, the graphic data may be easier to correct with image data, or may be easier to correct with vector data. Therefore, as in the third embodiment, if image data and vector data are separately provided to represent the same graphic data, and each data is managed by key information,
In accordance with the graphic data, data correction / conversion processing between image data and vector data can be easily performed, and correction and new creation of data according to each user's request can be performed.

Embodiment 4 FIG. Next, an embodiment of a graphic data management method according to the present invention will be described with reference to FIGS. This is for managing figure data, such as a topographic map and a facility map, divided for each mesh unit drawing, based on a crossing flag (crossing information) for graphic data over a plurality of mesh drawings.

That is, as shown in FIG. 11, when the drawing data is managed for each mesh unit drawing 50 (unit drawing), the graphic data may straddle between meshes. As a data management method at this time, a method of multiplexing and holding data as shown in FIG. 12, a method of holding and decomposing graphic data as shown in FIG. 13, and a method of storing entities of graphic data in a certain mesh. There is a method in which no entity is placed on the mesh. As a result, it is possible to select a method of managing data across meshes for each data having a different drawing meaning, such as a topographic map and a facility map. The straddling flag 51 indicates the case where the same graphic data is made to correspond to all the mesh unit drawings as in the case of multiplexing. In this case, 1 is set when graphic data corresponding to the drawing is stored, and 2 when other graphic data is stored.

More specifically, the multiplexing method does not make sense with a fragment of the graphic data in each mesh unit drawing, such as a facility drawing, but the graphic data spans a plurality of mesh unit drawings. It is suitable for data management of drawings that specify one facility. That is, the main body of the graphic data is managed in correspondence with each fragment of the graphic data in each mesh unit drawing. In addition, the method of disassembly is suitable for drawings in which each fragment itself forms a topographic element and has meaning in one fragment, such as a topographic map, and is disassembled based on each mesh unit drawing. The fragment itself of the graphic data is managed in correspondence with each mesh drawing. The dummy method is a management method in which the main body of graphic data is stored in correspondence with one mesh unit drawing, and other graphic data is stored in a place corresponding to another mesh unit drawing. is there.

In other words, by making it possible to select a method of managing a figure over a plurality of mesh unit drawings, data having no particular meaning in the figure such as a topographic map and a certain kind of figure such as a facility map can be used. Can be managed while distinguishing the management method between those having a logical meaning.

[0029]

According to the data management apparatus of the first aspect, the data storage length of each area of the storage means for storing data of graphic data such as topographic maps and facility maps is set to a fixed length,
When the graphic data covers a plurality of areas, the graphic data is managed based on the graphic element serial number information and the graphic element continuation information. Therefore, large data that overflows one defined area or one meaning that extends over a plurality of areas. Can efficiently manage such data. Further, in the case where unexpected data destruction occurs, the data can be logically checked by sequentially sorting the data based on the graphic element serial number information and referring to the graphic element continuation information . According to the graphic data management method according to the second aspect, since a graphic data management method can be selected based on specific crossover information, graphic data management suitable for a drawing can be performed.

[0030]

[0031]

[0032]

[Brief description of the drawings]

FIG. 1 is a simplified block diagram showing an embodiment of a design drawing information management apparatus according to the present invention.

FIG. 2 is a diagram showing graphic data, attribute data and connection information according to claim 1 of the present invention.

FIG. 3 is a diagram showing a table structure and a connection relationship of graphic data including a symbol according to claim 2 and related data.

FIG. 4 is a diagram showing details of a graphic element management unit shown in FIG. 3;

FIG. 5 is a diagram showing a display example of graphic data of the table in FIG. 3;

FIG. 6 is a diagram showing a flow of a data updating process according to claim 2;

FIG. 7 is a diagram showing a display example of graphic data by a line group according to claim 2;

8 is a diagram showing a table structure of graphic data constituting the drawing of FIG. 7;

FIG. 9 is a diagram showing a connection relationship between vector data, image data and attribute data according to claim 3;

FIG. 10 is a diagram for explaining vector correction according to claim 3;

FIG. 11 is a diagram showing a display example of graphic data spanning a plurality of drawings according to claim 4;

FIG. 12 is a diagram showing a method of managing the graphic data of FIG. 11 by multiplexing.

13 is a diagram showing a method of managing the graphic data of FIG. 11 by decomposition.

FIG. 14 is a diagram showing a method of managing the graphic data of FIG. 11 by using a dummy.

FIG. 15 is an overall configuration diagram of a conventional design support system.

FIG. 16 is a diagram showing details of various information stored in the database of FIG. 15;

FIG. 17 is a diagram showing a table structure of conventional graphic data.

FIG. 18 is a diagram for explaining an unnecessary area in a conventional graphic data table structure.

[Explanation of symbols]

1b Data management software (storage length setting means and data management means) 2f, 2g, 30f, 30g Key information (consolidation information) 22, 24 Continuation flag (continuation information) 50 Mesh unit drawing (unit drawing) 51 Crossover flag (crossover information) )

Claims (2)

(57) [Claims] 1. A data management apparatus which manages graphic data such as topographic maps and equipment maps required for construction design of electric power, gas, water and sewage facilities and the like and attribute data of the graphic data in association with each other. A storage length setting means for setting the data storage length of each area in the graphic data storage means for storing the graphic data to a predetermined length in advance; and, when the graphic data covers a plurality of areas, A data management means for managing the extended graphic data based on graphic element serial number information and graphic element continuation information. 2. Topographic maps required for construction design of electric power, gas, water and sewage facilities, etc., are separately managed for each specific unit drawing, and topographic maps extending over a plurality of unit drawings. A graphic data management method for managing graphic data such as equipment drawings in correspondence with unit drawings, wherein the graphic data is stored and managed in a plurality of unit drawings based on specific crossover information; Alternatively, it is possible to select whether the graphic data is divided and stored and managed in a plurality of unit drawings, respectively, or the graphic data is stored and managed in one unit drawing. Data management method.