JP3259998B2 - System for automatically creating equipment sectional views and method for automatically creating equipment sectional views - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automatic creation of equipment sectional views.
System and automatic creation method of equipment sectional view, especially
Map data indicating the position of the map element on the xy plane;
In addition to the position of the equipment element on the xy plane, its z
Arbitrary designation based on the equipment data indicating the axial position
The installation position of the relevant equipment element in the section specified by the line segment
A system for automatically creating equipment section views that outputs section data
System and automatic creation method.

In general, map data indicating the position of map elements such as roads, sidewalks, and tree-planting zones, and the position of equipment elements such as gas pipes, water pipes, sewage pipes, and power lines are provided for each mesh (for example, a 500 m × 350 m area). Create a database of equipment data shown, access the database from the terminal device, display a road map and equipment layout map of a predetermined area, and make necessary corrections based on this display screen. It is widely used in various fields such as road management, utility management and administrative management.

[0003] In particular, with respect to various equipment elements installed underground or in the air, in addition to the installation conditions on the respective xy planes, the installation conditions in the so-called z-axis direction such as depth and height can be simply determined. The present invention meets this demand.

[0004]

2. Description of the Related Art FIG. 8 is an explanatory diagram showing an outline of a general display system such as a road map and a facility layout diagram. Reference numeral 71 denotes a host computer, and 72 denotes a database consisting of map data and facility data. A large-capacity external disk storage device for storage, 73 is a storage device having a storage area for application programs and a normal work area, 74 is a display unit with a keyboard, and 75 is an input device such as a tablet or mouse. .

Here, the map data and facility data are stored in units of, for example, an area (mesh) of 500 m × 350 m. By operating a keyboard of the display unit 74 and specifying an arbitrary mesh, the map data and the facility data are stored. The equipment data is extracted from the disk external storage device 72, and a road map, an equipment layout map, and the like based on the data are displayed on the display unit 74.

When newly inputting the map data or the equipment data or correcting the input data, the operation of the input device 75 such as the keyboard and mouse of the display unit 74 causes the data in the disk external storage device 72 to be deleted. -The contents of the database (map data and equipment data) have been changed.

[0007]

As described above, conventionally, arbitrary mesh data is extracted from a database composed of map data and equipment data, and a predetermined road map or equipment is extracted based on these data. It is widely practiced to automatically create a layout drawing and display it on the terminal device side.

[0008] However, these creations and displays are all about road maps and equipment layouts on a so-called xy plane, and include gas pipes, water pipes, sewage pipes, and the like in arbitrary cross-sections including ground space. It has not been performed to automatically create and display a facility sectional view showing the installation status of each facility element such as a power line.

For this reason, when this equipment sectional view is required, a road map and an equipment layout drawing on an xy plane automatically created based on the database, or each of the sectional views obtained separately from this creation processing, It has been practiced to create by hand using the data in the z-axis direction indicating the depth and height of the equipment element, and the creation takes a long time and there is a problem that a creation error easily occurs. Was.

Therefore, in the present invention, the equipment data indicating the installation status of gas pipes, water pipes, sewage pipes and the like is assumed to include depth data in addition to conventional position data on the xy plane. When the user inputs an arbitrary section designation line segment, the facility data and the conventional map data, and furthermore,
If necessary, replace the
Automatically create equipment sectional views corresponding to the specified section line
With this, it is possible to simplify the process for creating
In, and an object thereof is to enhance the creation accuracy.

[0011]

According to the present invention, there is provided a cutting point indicating a position on a xy plane of a cutting point of each map element line and each equipment element line cut by an arbitrary cross-section designated line segment. Based on the data and the z-axis direction data indicating the depth of the equipment element line at this time or the like and the pseudo z-axis direction data instead of the data, a facility sectional view corresponding to the section designation line segment is automatically created. Is what you do.

FIG. 1 is a diagram showing the basic configuration of the present invention. In the figure, reference numeral 1 denotes a database, which is composed of map data and equipment data in mesh units, and the equipment data is equipment elements such as gas pipes, water pipes, sewage pipes, and power lines. The graphic element data indicates the installation status on the xy plane, for example, vector data on a line segment indicating the installation status, and the z-axis direction data indicating the depth of the installation location. Reference numeral 2 denotes an input unit for specifying a mesh, inputting a line for specifying a cross section, and the like, and uses a keyboard, a tablet, and the like. Reference numeral 3 denotes an application program, which extracts map data and equipment data for the mesh specified by the input unit 2 from the database 1, and corresponds to a section designation line segment based on these data. The process of creating the equipment cross section is performed. Reference numeral 4 denotes a display unit, which displays a facility sectional view created by running the application program 3 in addition to a normal xy plane display of map elements such as roads and sidewalks and facility elements such as gas pipes and water pipes. Also do.

Here, the processing procedure of the application program 3 is as follows. That is, the map data and the equipment data of the designated mesh are extracted from the database 1. Intersection coordinates on the xy plane between each map element line specified by the map data and the input section designation line segment are determined, and each is set as map element line cutting point data. Intersection coordinates on the xy plane between each of the equipment element lines specified by the equipment data and the input section designation line segment are obtained, and each is set as equipment element line cutting point data. The z-axis direction data corresponding to each of the equipment element lines cut by the section designation line segment is obtained. These map element cutting point data and equipment element cutting point data
The data and the data in the z-axis direction are sent to the display unit 4 as data for creating a sectional view of the equipment. Thus, the processing for creating and displaying the sectional view of the equipment is performed.

[0014]

The present invention thus provides a facility data indicating the installation status of each facility element such as a gas pipe, a water pipe, a sewage pipe, and a power line.
The figure data such as vector data for specifying the position on the xy plane is represented by z indicating the depth of the equipment element.
The apparatus is constructed in such a manner that axial direction data is newly added, and when an arbitrary sectional designating line segment is inputted, the equipment sectional view is automatically created using the z-axis direction data and the like.

In the automatic creation, the application program 3 obtains intersection coordinates on the xy plane between each of the facility element line and the map element line and the section designation line segment. As a method of expression and a method of calculating the coordinates of the intersections of these lines, a conventional method, for example, “bit separate volume (separate volume of September 1986), computational geometry and geographic information processing, published by Kyoritsu Shuppan Co., Ltd. (Showa September 10, 61
Day) ”).

Further, the z-axis direction data has a feature that a standard value is set for each equipment element, rather than being different for each installation position of each equipment element. It is not necessary to have this z-axis direction data in all the records in the linked state. For example, only the record indicating the portion set at a depth deviating from the standard value, or only the record every predetermined number of times, You may make it have axial direction data.

If the record indicating the cutting point portion of the equipment element line is not set with the z-axis direction data, the following: z-axis direction data of a record near the equipment data; The standard value data
For example, pseudo z-axis direction data such as data is used.

A priority is given to which of the two is to be used. First, the former record is checked by a predetermined number, and when the z-axis direction data is not found, the latter standard value data is used only. It may be. Also,
When this standard value data is used, a display to that effect is made on the display unit.

[0019]

An embodiment of the present invention will be described with reference to FIGS. In the following embodiments, for convenience of explanation, equipment elements composed of pipes such as gas pipes, sewage pipes, and water pipes buried underground are targeted, and “depth data” is used instead of “z-axis direction data”. The word "sa data" is used.

[0020] FIG. 2 is an explanatory diagram showing a facilities element line, the relationship between the data format of the equipment data, P _i
Is the i-th feature point of any equipment element line, (x _i , y _i )
Coordinate data of the feature points P _i, the 21 header, 22 denotes a region for storing the number of coordinate data, 23 vector data area comprising two-dimensional data array, 24 attribute data portion in the vector data area, respectively ing. A positive value is used for the coordinate data, and a negative value is used for the attribute data, so that the two can be identified.

Here, the equipment element line itself composed of various graphic elements such as line segments, arcs, semi-circles, etc. is a vector data format consisting of a column of coordinate data of each of the characteristic points P _i which are the end points of these graphic elements. Is represented by

The attribute data portion 24 in the vector data area shows a case where the preceding and following feature points are not connected by a line segment. In the case shown in FIG. It is specified by the data of the part.

[0023] For example, (- 4,0) attribute data also that between the feature point P ₄ and the next feature point P ₅ before its is semicircular in the traveling direction left, (-16, attribute data of 0) shows that the flying is between feature points P ₆ and the next feature point P ₇ before it.

In the field of computer mapping, various graphic elements, for example, “Introduction to Map Information System, edited by Yasuhiko Kamada, published by Nikkan Kogyo Shimbun (March 30, 1990), 41
Pages ", and these are of course used in the present invention as needed.

Next, the header 21 is composed of equipment classification numbers indicating the types of equipment elements, data indicating the material of the pipe, data indicating the diameter of the pipe, depth data indicating the burial status of the pipe, and the like. ing.

Actually, equipment element lines such as gas pipes and water pipes, which are represented by more line segments, are divided into arbitrary units, and one record is formed by the equipment data of this unit. Are linked so as to match the continuous state of the facility elements at the site.

Even if the records themselves do not have link data, the records can be logically linked by checking the coincidence of the coordinate data of each record.

Although not shown, the map element line is also composed of various graphic elements such as line segments, arcs, and semicircles in the same manner as the equipment element line, and its data format is the same as that of the equipment data. The header 21 is composed of the type of map element line, for example, type data indicating the boundary between the sidewalk and the land or the boundary between the road and the sidewalk.

The hardware itself for creating and displaying the equipment sectional view based on such map data and equipment data is not substantially different from the conventional hardware shown in FIG. This is significantly different from the prior art in that depth data is added to equipment data.

FIG. 3 is an explanatory diagram showing a display screen when a section designation line segment is input, where 30 is a boundary between a sidewalk and a private land, 31 is a boundary between a road and a sidewalk, 32 is a gas pipe, 33 is a water pipe, 34 is a sewer pipe, 35 is a power cable, 36 and 37 are input points for section designation, 38 is a section designation line segment, and A to H are sections of the section designation line 38 and each element line 30 to 35. intersection shows (x _a, y _a) is a point a in the coordinate data, (x _H, y _H) is the H point coordinate data, respectively. Each of the element lines 30 to 35 is displayed in a straight line, but may be displayed in a curved line as needed, such as a road curve or a pipe joint.

FIGS. 4, 5 and 6 are explanatory views showing the processing procedure when generating data for creating and displaying a facility sectional view corresponding to the sectional designated line segment in FIG. In this process, map data, equipment data, and position data of the cross-section designating input points 36 and 37, which are already stored in the work area, for the mesh displayed in FIG. 3 are used.

FIG. 4 and FIG. 5 are explanatory diagrams showing a processing procedure for obtaining an intersection between a map element line and a section designation line segment. That is, the application program: (1) The section designation line segment 38, that is, the section designation input points 36 and 37
An equation for specifying a line segment that connects is obtained, and the process proceeds to the next step. (2) Take out the first record of the linked map data and proceed to the next step. (3) It is determined whether there is a possibility that the map element line specified by this record and the section designation line segment may intersect, and “YES”
If it is, proceed to the next step, if it is “NO”,
Proceed to (10). (4) The number of coordinate data (positive values) of this record as an initial value of a variable N indicating the number of remaining feature points to be processed (FIG. 2)
In the case of the element line, a value of “10” is set, and a value of “1” is set as an initial value of a variable M indicating the next feature point to be processed, and the process proceeds to the next step. (5) It is determined whether the variable N is “N> 1” and “YE
If “S”, proceed to the next step; if “NO”, proceed to step (10). (6) An equation for specifying a line connecting the M-th feature point and the next feature point is calculated, and the process proceeds to the next step. Note that this formula often specifies a line segment, but when attribute data (negative value) exists between coordinate data (positive value) of these feature points, it is determined according to the content of the attribute data. For example, in the case of attribute data of (−4, 0), this is an expression that specifies a semicircle having a diameter of a line segment connecting the feature points. (7) From the equations obtained in step (1) and step (6), determine whether or not the section designation line 39 intersects with this line,
If "YES", proceed to the next step; if "NO", proceed to step (9). (8) The coordinate data of the intersection, that is, the data of the map element line cutting point is stored in the work area, and the process proceeds to the next step. (9) Change the value of the variable N to “N−1” and the value of the variable M to “M
+1 ”and return to step (5). (10) It is determined whether or not the processing has been completed for all records, and if “YES”, the next processing, that is, the coordinate data of the intersection between the equipment element line and the section designation line segment (equipment element line cut) The process proceeds to a process for obtaining point data) and depth data. If "NO", the process proceeds to the next step (11). (11) Select the next record and return to step (3). Thus, map element line cutting point data is obtained.

The step (3) is for improving the efficiency of searching for the intersection with the cross-section designated line segment 38, and whether or not this step is adopted is optional. In addition, as a determination method of this step, for example, similar to the one disclosed in Japanese Patent Application No. 3-31059 filed by the present applicant, the cross-section designation line segment 39 is placed in a rectangular area circumscribing the map element line. For example, a method of checking whether or not the user enters may be used.

Subsequently, as described in the step (10), the processing shifts to the processing for obtaining the equipment element line cut point data and the depth data. The procedure itself for the former is the map element line cut point data. Is the same as in the case of finding the data. It goes without saying that any of the processing for obtaining the equipment element line cutting point data and the depth data and the processing for obtaining the map element line cutting point data may precede.

FIG. 6 is an explanatory diagram showing a processing procedure newly required for obtaining the depth data. That is, following the previous step (8), (21) it is determined whether or not the record contains depth data, and if "YES", the flow proceeds to step (24), and "N"
If "O", proceed to the next step. (22) It is sequentially determined whether or not depth data is included in a predetermined number of records before and after the record linked to the record, and if `` YES '', step (2
Proceed to 4), and if all are "NO", proceed to the next step. (23) A preset standard value, for example, in the case of a gas pipe, "1.2 m" is regarded as depth data, which is stored in the work area, and the process proceeds to step (9) in FIG. (24) This depth data is stored in the work area, and the flow advances to step (9) in FIG. Is performed.

Subsequently, the application program:
The map element line cutting point data, the equipment element line cutting point data and the depth data thus obtained are converted into a predetermined display function as arguments, and the equipment sectional view is obtained by running the display function program. Is displayed.

FIG. 7 is an explanatory view showing the contents of the display. 41 is a sidewalk surface, 42 is a road surface, 43 is a buried position of the gas pipe 32, 44 is a buried position of the water pipe 33, and 45 is a sewage pipe 34. The embedding position 46 indicates the embedding position of the power cable 35 (see FIG. 3).

As the reference point in the x-axis direction of the equipment sectional view, the point A which is one of the intersections of the section designation line segment 38 and the boundary 30 is used, and the x-axis of each of the other points B to H is used. The display position in the direction is specified based on the display distance from the point A on the xy plane.

The display distance of each of the points B to H on the xy plane can be obtained by multiplying the distance between the reference point A and the reference point A by the enlarged display coefficient a. Is a calculation formula shown in FIG. When the displayed sectional view of the facility is printed out by hard copy or the like, the coefficient a may be used as a scale and may be instructed from outside.

The display argument of the road surface 42 is B
Using the xy coordinate data of each of the point and the point G, the display function receiving the xy coordinate data executes a display process such that the road surface becomes lower as approaching the boundary between the road and the sidewalk as shown in the figure.

The burial positions 43 to 43 of the respective equipment elements 32 to 35
The xy coordinate data and the corresponding depth data of each of the points C to F are used as the display arguments for each of the 46, and the display function that receives them uses the display distance and the depth data obtained from the coordinate data. The embedding position is indicated by a circle having a predetermined radius centered on the position specified by the display depth (d ₁ to d ₄ ) obtained from ( ₁ ).

FIG. 7 shows a case in which the relative positional relationship between the facility elements 32 to 35 is displayed. If necessary, x from the reference point A to each of the points B to H is displayed. The axial distance itself may be displayed using a leader line or the like.

When a predetermined standard value is used as the depth data, the application program also sends a signal to that effect to the display function, and the display function receiving the signal sends the signal to the display function. When the buried position is displayed, for example, a specific color is used or an explanation is added so that the display is based on the standard value.

[0044]

As described above, according to the present invention, as the equipment data indicating the installation status of each equipment element, the data indicating the position on the xy plane in the conventional z-axis direction data for specifying the depth and the like are specified. When an arbitrary cross-section designating line segment is input using data to which data is added, the relevant facility data and conventional map data , and furthermore,
If necessary, based on the substitute data of the z-axis direction data , the equipment sectional view corresponding to this section designation line segment is automatically created, so that a highly accurate equipment sectional view can be easily created for any part. Can be sought.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a basic configuration of the present invention.

FIG. 2 is an explanatory diagram showing the relationship between equipment element lines and the data format of the equipment data according to the present invention.

FIG. 3 is an explanatory diagram showing a display screen when a section designation line segment is input according to the present invention.

FIG. 4 is an explanatory diagram showing a processing procedure when finding an intersection between a map element line and a designated section line according to the present invention (part 1);

FIG. 5 is an explanatory diagram showing a processing procedure for obtaining an intersection between a map element line and a designated section line according to the present invention (part 2).

FIG. 6 is an explanatory diagram showing a processing procedure newly required for obtaining depth data according to the present invention.

FIG. 7 is an explanatory diagram showing a facility cross-sectional view corresponding to the cross-section designated line segment of FIG. 3 according to the present invention.

FIG. 8 is an explanatory diagram showing an outline of a general system for displaying a road map and a facility layout based on a database.

[Explanation of symbols]

 In FIG. 1, 1 ... database 2 ... input unit 3 ... application program 4 ... display unit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 17/50 G06T 11/60

Claims (6)

(57) [Claims] 1. A land indicating a position of a map element on an xy plane.
Necessary in addition to the diagram data and the position of the equipment element on the xy plane
And equipment data indicating the position in the z-axis direction according to
Required for the facility in the section specified by the specified line segment.
Equipment cross-sectional view that outputs cross-sectional data indicating the installation position of the element
Automatic In creation system, comprising: means for receiving an instruction of the specified line segment, the specified line segment as the map element line specified by the map data
The first intersection on the xy plane with
On the xy plane between the equipment element line specified by
Find the second intersection at and output each data
In addition, the equipment data contains the
2 includes the position data in the z-axis direction corresponding to the intersection of
The position data is output together with
In the equipment data, the second intersection of the equipment element line
When the corresponding position data in the z-axis direction is not included
Is the data that also outputs the alternative position data in the z-axis direction
An automatic system for creating a sectional view of equipment , comprising a processing means . 2. The equipment element line as the equipment data.
In the unit of the record of the line part which is a component of
The data processing means uses a format having position data of the same direction as the substitute position data.
Another line within a predetermined range from the line portion including the second intersection
Using the position data in the z-axis direction of the record indicating the portion
Automatic creation of equipment sectional views according to claim 1, characterized in that:
system. 3. The data processing means according to claim 2 , wherein
2. A facility cross-sectional view according to claim 1 , wherein a predetermined standard value is used as the data.
system. 4. A place indicating a position of a map element on an xy plane.
Necessary in addition to the diagram data and the position of the equipment element on the xy plane
And equipment data indicating the position in the z-axis direction according to
Required for the facility in the section specified by the specified line segment.
Equipment cross-sectional view that outputs cross-sectional data indicating the installation position of the element
In the automatic creation method, the designated line segment is input using an input unit, and specified by the map data using a data processing unit.
First intersection of the map element line and the designated line segment on the xy plane
Points, and equipment element lines and fronts specified by the equipment data
Finds the second intersection on the xy plane with the specified line segment and calculates it
Each data is output and the equipment data
The z corresponding to the second intersection of the equipment element line
If the position data in the axial direction is included,
Data and output the equipment data
A position in the z-axis direction corresponding to the second intersection of the element line
If no data is included, the alternative position data in the z-axis
Automatic output of equipment sectional views, characterized in that data is also output . 5. The equipment element line as the equipment data.
In the unit of the record of the line part which is a component of
Using a format having position data of the same direction, and including the second intersection as the substitute position data.
Before a record indicating another line part within a predetermined range from the line part
5. The automatic creation of the equipment sectional view according to claim 4 , wherein the position data in the z-axis direction is used .
Method. 6. A predetermined standard as said substitute position data.
The automatic creation of the equipment sectional view according to claim 4 , wherein a value is used .
Method.