EP1433091A2 - Verfahren zur erzeugung von schematisierten netzplänen - Google Patents
Verfahren zur erzeugung von schematisierten netzplänenInfo
- Publication number
- EP1433091A2 EP1433091A2 EP02774372A EP02774372A EP1433091A2 EP 1433091 A2 EP1433091 A2 EP 1433091A2 EP 02774372 A EP02774372 A EP 02774372A EP 02774372 A EP02774372 A EP 02774372A EP 1433091 A2 EP1433091 A2 EP 1433091A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- line
- edges
- routes
- line sections
- plan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
Definitions
- An inventory plan contains information about coordinates of all documented network elements, for example
- GIS geographic information system
- both inventory plans and schematic plans of a network can be stored and managed separately.
- the effort to maintain both types of plans separately is comparatively high for users of a geographic information system.
- separate maintenance of the two types of plans often leads to inconsistencies.
- the present invention is therefore based on the object of specifying a method and a computer program for generating schematic network plans that enable a schematic network map to be derived quickly from an inventory plan.
- this output is achieved by a method having the features specified in claim 1 and a computer program having the features specified in claim 6. Further developments of the method according to the invention are specified in the dependent claims.
- One aspect of the present invention is that determining an arrangement of edges assigned to paths in the respective path using an algorithm for tournament graphs significantly accelerates a method for generating schematic network plans.
- An algorithm for tournament graphs is applied to pairs of line connections with at least one parallel line section, taking into account a number of crossing points between the respective line connections.
- the acceleration achieved according to the invention of a method for generating schematic network plans makes it possible to automatically generate a schematic plan from an inventory plan if necessary and to dispense with separate, complex and error-prone maintenance of both plan types.
- an exact location plan is declared a "master plan” and only this plan type is maintained.
- An alternative diagram scheme for example, is generated automatically after a change in the inventory plan.
- FIG. 1 shows a section of an inventory plan of a line network
- FIG. 1 shows a section assigned to FIG. 1
- Figure 3 is a flow chart for a method for generating a schematic network plan.
- sections 101 and route points 111 are shown in the correct position in the section of an inventory plan of a line network, in which the line network is modeled as a graph with nodes and edges.
- routes 101 run parallel line sections.
- a correct representation of line sections in an inventory plan can be confusing due to the large number of parallel line sections, sometimes arranged at different levels. For this reason, in the present example, a correct representation of routes instead of line sections is preferred.
- a correct representation of line sections is also possible in an inventory plan. The following considerations apply equally to this case.
- the partial plan shown in FIG. 1 is converted into a schematic plan, which is shown in detail in FIG. 2, in accordance with a method described in more detail.
- Line sections 211 assigned to a route 101 are shown in the schematic plan, which are delimited by network points 202, which in turn can be assigned route points 111.
- Line sections 211, which are connected by network points 202 of minor importance, for example cable sleeves with a view to network management or network nodes which do not branch out, are combined to form line connections 201.
- intersections should remain in the inventory plan. In addition, no new crossings should be added.
- Network elements that have a north / south or west / east relationship in the inventory plan should also be arranged accordingly in the schematic map.
- the alignment of edges in the schematic plan should be as parallel as possible to the axis.
- hierarchical dependencies between line sections and routes, between route points and routes, between line sections and network points as well as between network points and route points are also taken into account in the schematic plan. Due to the hierarchical dependencies, te and routes sometimes several network elements and therefore have an expansion.
- the schematic diagram is generated in the following steps shown in FIG. 3:
- the nodes and edges of the inventory plan are imported with their coordinates and hierarchical dependencies including the associated text names and control parameters into a schema plan database that is generated dynamically when a schema plan is generated.
- the schematic plan is automatically generated, for example, after a change in the inventory plan.
- the schema map database is based on that in DH Douglas, TK Peucker: "Algorithms for the Reduction of the Number of Points Required to Represent a Digitised Line or its Caricature", The Canadian Cartographer, Vol. 10, No. 2, pp. 112-122, 1973 described Douglas-Peucker algorithm knots with grade 2 removed. This results in a combination of edges and a smoothing of routes. Intersections are eliminated by inserting auxiliary nodes into the relevant edges. In this way, a planar graph is generated. Minimum widths for routes are determined from the assignments of network points and line sections to route points and routes, from which minimum dimensions for route points are determined. The minimum dimensions result from the number of line sections within a route and from a predetermined distance between edges.
- route nodes After determining the minimum dimensions for route nodes, there are often mutually overlapping route nodes. These are first dealt with using various scaling heuristics.
- All edges in the schematic plan should be aligned as orthogonally as possible. This is achieved by an additional force in the spring model of the "spring embedder". Depending on whether the respective edge is more vertical or horizontal, corresponding forces are exerted on the nodes that limit the respective edge in order to move the edge further in the respective direction.
- the positional relationship of the nodes to one another should be preserved as far as possible. For this purpose, it is checked before each node shift whether the respective node would cross another edge by the node shift node or whether an edge delimited by the respective node would cross another node. If one of these two conditions is met, the respective node is only moved to a limited extent. An exception are level 2 nodes, which are moved without restrictions.
- the number of crossing points between the first and the second line connection is determined for each pair of line connections with a first and a second line connection in the event that the first line connection is arranged to the left or above the second line connection. The number of crossing points for the reverse case is then determined.
- an arrangement of edges assigned to paths within the respective path is determined using an algorithm for tournament graphs.
- An algorithm for tournament graphs is applied to pairs of line connections with at least one parallel line section, taking into account the number of crossing points between the respective line connections.
- a table for example, is determined using a tournament graph, in which the respective line connections are entered in an order corresponding to their relative arrangement in the schematic plan.
- tournament graphs which represents a sub-area of graph theory, especially game theory, and to which reference is made here.
- the described method for arranging lines in routes is particularly quick and efficient and contributes significantly to the accelerated generation of schematic plans.
- the accelerated generation of schema plans is, in turn, a prerequisite for automatically generating a schema plan from an inventory plan if necessary and for doing without separate maintenance of the inventory plan and schema plan, which sometimes leads to inconsistencies.
- a determination of coordinates for network points within route points and a determination of a course of line sections within route points are described below. Due to the previous line arrangement in routes, positions are in the respective route point entering and exiting line sections are already defined.
- Determining a route point layout should result in as few crossing points as possible between line sections.
- Line sections should only meet at network points if possible. If there are unavoidable crossing points between line sections, the respective line sections should meet orthogonally at these crossing points.
- a "pattern router” and a “lee router” are used in combination to determine the route point layout. Both methods were originally intended for the automatic unbundling of printed circuit boards.
- a route point layout usually has several subgraphs, which in turn are often divided into simply connected subgraph components and often have a network point and more than two line connections. The treatment of the subgraph components is described below.
- two network points are selected which lie on the edge of the route point and which can be connected by means of a simple pattern, for example u-shaped, z-shaped, straight or orthogonal.
- a third line connection on the edge of the route point is selected and connected.
- the coordinates of the associated network point are thus defined.
- the method described here for generating schematic plans is implemented by a computer program which can be loaded into a main memory of a data processing system and has at least one code section, the execution of the steps described above take place when the computer program runs in the data processing system.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Software Systems (AREA)
- Remote Sensing (AREA)
- Computer Graphics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10147027 | 2001-09-25 | ||
DE10147027A DE10147027A1 (de) | 2001-09-25 | 2001-09-25 | Verfahren und Computerprogramm zur Erzeugung von schematisierten Netzplänen |
PCT/DE2002/003455 WO2003027910A2 (de) | 2001-09-25 | 2002-09-16 | Verfahren zur erzeugung von schematisierten netzplänen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1433091A2 true EP1433091A2 (de) | 2004-06-30 |
Family
ID=7700096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02774372A Withdrawn EP1433091A2 (de) | 2001-09-25 | 2002-09-16 | Verfahren zur erzeugung von schematisierten netzplänen |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040199759A1 (de) |
EP (1) | EP1433091A2 (de) |
AU (1) | AU2002340737A1 (de) |
DE (1) | DE10147027A1 (de) |
WO (1) | WO2003027910A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2433675B (en) | 2005-12-22 | 2008-05-07 | Cramer Systems Ltd | Communications circuit design |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5119317A (en) * | 1988-03-16 | 1992-06-02 | Kabushiki Kaisha Toshiba | Routing method and system |
US5227983A (en) * | 1990-07-12 | 1993-07-13 | First Graphics, Inc. | Method and apparatus for designing a distribution system for a building |
US5329464A (en) * | 1992-03-23 | 1994-07-12 | Puget Sound Power & Light Company | Utility layout design system |
US6424933B1 (en) * | 2000-03-17 | 2002-07-23 | Vicinity Corporation | System and method for non-uniform scaled mapping |
-
2001
- 2001-09-25 DE DE10147027A patent/DE10147027A1/de not_active Withdrawn
-
2002
- 2002-09-16 WO PCT/DE2002/003455 patent/WO2003027910A2/de not_active Application Discontinuation
- 2002-09-16 US US10/490,654 patent/US20040199759A1/en not_active Abandoned
- 2002-09-16 EP EP02774372A patent/EP1433091A2/de not_active Withdrawn
- 2002-09-16 AU AU2002340737A patent/AU2002340737A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03027910A2 * |
Also Published As
Publication number | Publication date |
---|---|
DE10147027A1 (de) | 2003-04-17 |
US20040199759A1 (en) | 2004-10-07 |
AU2002340737A1 (en) | 2003-04-07 |
WO2003027910A3 (de) | 2003-09-12 |
WO2003027910A2 (de) | 2003-04-03 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20040323 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
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AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DOSTERT, PETER Inventor name: MALISCH, FRANK-OLIVER Inventor name: STUEBINGER, ANDREAS Inventor name: LAUTHER, ULRICH |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS S.P.A. |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20090401 |