Digital map production system for verifying change in location of ground object
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Patents
- Current Assignee / Owner
- YESLT CO LTD
- Filing Date
- 2026-04-27
- Publication Date
- 2026-08-03
Smart Images
Figure 112026051117131-PAT00001_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a digital map production system, and more specifically, to a digital map production system capable of verifying changes in the position of objects on the ground. Background Technology
[0003] Generally, a digital map refers to a map that represents geographical and topographical content using numerical data. Examples include nautical charts that show water depth numerically and topographic survey maps that show the relief of the terrain. In other words, a digital map applies numerical information to a drawn image while expressing the geographical and topographical features of a specific point.
[0004] The construction of a digital map is completed through the following various processes. First, after a paper map is converted into a digital map format through digitizing or scanning, it undergoes procedures to correct various input errors.
[0005] Next, through coordinate transformation, the data is converted into an actual coordinate system to suit the user's purpose, and a topological structure is established to identify the relative positionalities and relationships between spatial objects. Subsequently, attribute data related to each geometric data is input into the digital map that has undergone the establishment of the topological structure.
[0006] In this case, the aforementioned attribute data includes various identifier information. For example, the Unique Feature Identifier (UFID) is used as an identifier for topographic features in the digital maps of the National Geographic Information Institute. This refers to a single identifier uniquely assigned to a topographic feature, representing location information, managing agency, and other attribute information assigned to the feature. It consists of agency codes, map sheet numbers, topographic feature identification codes, and serial number fields, and is used as an identifier for linking with other spatial information or for cross-referencing between topographic features for the management, search, and utilization of the features.
[0007] Digital maps produced in this way enable faster and more accurate map searching compared to paper maps, and their superior information management and usability allow for more effective support for various planning and decision-making.
[0008] In most current systems for editing or managing digital maps, surfaces are represented as polygon objects; when another surface exists inside a surface, the inner surface object is referred to as a hole.
[0009] In addition, multiple polygons forming a single object are called multipolygons.
[0010] In this case, when representing the color of polygons, holes are not colored. In other words, they represent a surface shape with holes.
[0011] When performing input and editing operations for creating a digital map (DWG file) using the method described above, polygons and multi-polygons can be represented only as closed-polylines with connected endpoints.
[0012] In this case, polygon objects and multipolygon objects do not exist. For example, when representing a polygon with a single hole, another closed polyline is displayed within the area of the closed polyline, and a multipolygon with two faces can be represented by separating them into individual closed polylines.
[0013] However, since a single topographic feature can be represented as multiple objects, when performing digital map input and editing work or searching for a specific topographic feature on a digital map, other related objects must be considered together, which requires a lot of attention from the operator and reduces work efficiency.
[0014] Additionally, in the case of hole polygons, when displaying color, the entire area should not be filled; instead, the internal holes should not be displayed, and the representation should show a gap.
[0015] However, conventional hole representation methods cannot be expressed as a single hole because the inner polyline (hole) is obscured when two closed polylines—namely, the outer polyline and the inner polyline—overlap, or because the two polylines are selected separately.
[0016] In addition, additional work is required to maintain object types when importing or exporting data formats from other systems that support polygons or multi-polygons.
[0017] In other words, there is a problem in that when importing, the information of the separated objects must be managed separately, and when performing an export, the separated objects must be edited back into a single object from the system of the saved file.
[0018] Meanwhile, while digital maps can be viewed using the AutoCAD system, polygon and multi-polygon objects exist when using higher versions of the CAD system; however, when using AutoCAD, files created in higher versions cannot be viewed in lower versions, causing compatibility issues.
[0019] In addition, while it is possible to develop other applications to create and use new object types, there is a problem in that if an object created through another application is saved as a file, editing and modification are impossible without a corresponding application.
[0020] Accordingly, patent technology has been disclosed regarding a multi-polygon generation system and method using attribute information of a digital map object, wherein unique attribute information, such as numerical coordinates, is input for each polygon so that polygons can be automatically identified based on this information.
[0021] However, since this technology requires the operator to manually input the corresponding attribute information for each polygon according to the set rules, there was inconvenience and difficulty in the work.
[0022] To explain this in more detail, in a conventional digital map where areas or objects are distinguished by polygons, the operator directly distinguishes between multi-polygons, where multiple polygons form a single object, and polygons, where a single polygon forms a single object. For each of these distinguished polygons, the operator inputs the numerical coordinates of the corresponding point as attribute information, or inputs a unique code linked to the numerical coordinates as attribute information.
[0023] However, this method of inputting attribute information placed a heavy burden on the worker because the worker had to manually input attribute information for numerous polygons. Furthermore, the time burden was also significant because the attribute information had to be checked and entered for each polygon individually, and there was a problem that incorrect attribute information could be entered into any polygon due to the worker's error or mistake.
[0024] Furthermore, this manual method caused a positional discrepancy between the actual terrain image of the aerially photographed point (aerial image) and the corresponding ground object image within the digital map, which made it difficult to produce a precise digital map.
[0025] In addition, conventional manual techniques had the problem that their use was limited to numeric maps with simple polygon object structures.
[0026] The matters described above as background technology are intended solely to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. The problem to be solved
[0028] The present invention aims to solve the problems of the aforementioned prior art by providing a digital map production system capable of verifying changes in the position of ground objects, which can precisely compare a ground object image represented as a polygon object type in a digital map with an actual terrain image located at a corresponding point to identify points of discrepancy, and adjust the digital coordinates of the corresponding point or adjust the ground object image to the position of the digital coordinates.
[0029] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description of the present invention. means of solving the problem
[0031] The configuration of the present invention for achieving the above purpose comprises: a data input module that receives a digital map produced using digital map production software; a creation module that creates an MPolygon object by analyzing the geometric relationship of a polyline; an attribute information setting module that sets attribute information of a polyline; an attribute information attachment module that links attribute information to a polyline; a search and extraction module that searches for an MPolygon object existing in the digital map; a modification module that adds or removes polygons to an MPolygon object or removes attribute information of an MPolygon object; a database module that stores digital map information, an MPolygon object, a polygon object, a polyline object, and attribute information for each object; a display module that displays the MPolygon object extracted by the search and extraction module on an output device; and a control module that generates polygons constituting the MPolygon object and attribute information for each polygon.
[0032] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the display module preferably comprises: an installation support unit installed on the ground; an installation coupling plate coupled to the upper part of the installation support unit; a plurality of radiation supports coupled to the upper part of the installation coupling plate; a heat radiation plate coupled to the upper part of the radiation supports; a heat transfer support unit mounted on the upper part of the heat radiation plate; a heat transfer plate mounted on the upper part of the heat transfer support unit; and an output device coupled to the upper part of the heat transfer plate.
[0033] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the heat transfer support member preferably comprises: a base member that contacts the lower part of a heat transfer plate; an elastic support member disposed inside the base member, one side of which contacts the lower base of the base member and the other side of which contacts the upper base of the base member to elastically support the lower base and the upper base; an elastic guide member disposed spaced apart from the elastic support member, one side of which is fixed to the lower base and the other side of which is fixed to the upper base, and one side of which is inserted into the other side and elastically supported in the inserted state; a first heat transfer member disposed in the center of the base member, the upper side of which contacts the heat transfer plate and the other side of which is exposed to the outside of the heat radiation plate to transfer heat to the atmosphere; and a plurality of second heat transfer members disposed spaced apart from the first heat transfer member, the upper side of which contacts the heat transfer plate and the other side of which is exposed to the outside of the heat radiation plate to transfer heat to the atmosphere.
[0034] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the elastic support unit preferably comprises: a first support base fixed to the lower surface of an upper base; an elastic member with its upper portion fixed to the first support base; and a second support base fixed to the upper surface of a lower base and connected to the lower portion of the elastic member.
[0035] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the elastic guide unit preferably comprises: a guide body fixed to the lower surface of an upper base; a lifting guide, the upper end of which is inserted into a body groove formed in the lower part of the guide body and the lower end of which is fixed to the upper surface of a lower base; and a guide elastic member disposed inside the body groove to elastically support the upper part of the lifting guide.
[0036] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the first heat transfer member is formed with a larger contact area with the heat transfer plate than each second heat transfer member, and the elastic support member and the elastic guide member elastically press the heat transfer plate in the direction of the output device.
[0037] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, it is preferable that the first heat transfer member penetrates a lower first hole formed in a lower base and is coupled to an upper first hole formed in an upper base to make surface contact with a heat transfer plate, and that the plurality of second heat transfer members penetrate each lower second hole formed in a lower base and are coupled to each upper second hole formed in an upper base to make surface contact with a heat transfer plate.
[0038] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, it is preferable that the first heat transfer member is formed in a cylindrical shape with a solid interior, and the second heat transfer member is formed in a plate shape with a solid interior.
[0039] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the installation support unit preferably comprises: an installation support case having a hollow interior and disposed at the bottom of an output device; an up-and-down adjustment part coupled to the center of the inner lower surface of the installation support case and capable of moving up and down; a pair of left and right fixing parts coupled to both sides of the inner lower surface of the installation support case and arranged to face each other with the up-and-down adjustment part in between; and a pair of fixing supplementary parts provided at the bottom of an installation coupling plate.
[0040] In a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention, the left and right fixing unit preferably comprises: an up-and-down operating part coupled to the inner lower surface of an installation support case so as to be movable up and down; a fixed support part spaced apart from the up-and-down operating part and fixedly coupled to the inner lower surface of the installation support case; a lower fastening plate coupled transversely to the upper end of the fixed support part and having a plurality of lower fastening teeth; and an upper fastening plate having one end rotatably coupled to the upper end of the up-and-down operating part, and a central part rotatably coupled to the upper part of the lower fastening plate and having a plurality of upper fastening teeth. Effects of the invention
[0042] The present invention, having the above configuration, has the effect of precisely comparing a ground object image represented as a polygon object type in a digital map with an actual terrain image located at a corresponding point to identify points of discrepancy, and adjusting the numerical coordinates of the corresponding point or adjusting the ground object image to the position of the said numerical coordinates. Brief explanation of the drawing
[0044] It should be noted that the attached drawings are provided as examples for reference to help understand the technical concept of the present invention, and the scope of the rights of the present invention is not limited by them. FIG. 1 is a block diagram illustrating the configuration of a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention. FIG. 2a is an example diagram showing a screen in which a generation module unit according to an embodiment of the present invention generates an MPolygon object. FIG. 2b is an example diagram showing a screen in which an attribute information attachment module according to an embodiment of the present invention links attribute information to a polyline of a polygon. FIG. 2c is an example diagram showing a screen in which a partial addition module according to an embodiment of the present invention partially adds and registers polygons. FIG. 2d is an example diagram showing a screen in which a partial removal module according to an embodiment of the present invention deletes a portion of a polygon. FIG. 2e is an example diagram showing a screen in which a release module according to an embodiment of the present invention removes attribute information values linked to the polyline of the corresponding polygon. FIG. 2f is an example diagram showing a screen in which a control module unit according to an embodiment of the present invention searches for, creates, and edits polygons. FIG. 3a is an overall flowchart illustrating a method for generating multiple polygons using attribute information of a numeric map object according to an embodiment of the present invention. FIG. 3b is a detailed flowchart illustrating a method for assigning attribute information to a polygon or multiple polygons according to an embodiment of the present invention. FIG. 4 is a block diagram illustrating the configuration of an attribute information module according to an embodiment of the present invention. FIG. 5 is a diagram showing a control module unit scanning a digital map according to an embodiment of the present invention, an attribute information setting module unit setting attribute information, and an attribute information attachment module unit linking attribute information to a corresponding polygon. FIG. 6 is an image showing an object comparison module according to an embodiment of the present invention comparing a ground object image and a terrain image of the MPolygon object, polygon object, and polyline object types. FIG. 7 is an image showing an object modification module according to an embodiment of the present invention preparing to modify the position of a ground object image based on a terrain image. FIG. 8 is an image showing an object modification module according to an embodiment of the present invention modifying a ground object image to match a terrain image. FIG. 9 is a drawing showing the overall appearance of a display module part according to an embodiment of the present invention. FIG. 10 is a drawing showing the internal view of an installation support unit according to an embodiment of the present invention. FIG. 11 is a drawing showing a state in which a heat transfer support member according to an embodiment of the present invention is mounted between a heat transfer plate and a heat radiation plate. FIG. 12 is a schematic diagram showing a heat transfer support member according to an embodiment of the present invention. FIG. 13 is a schematic diagram showing the first heat transfer section and the second heat transfer section of a heat transfer support member according to an embodiment of the present invention. Specific details for implementing the invention
[0045] Hereinafter, the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement it. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.
[0046] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.
[0047] In addition, terms or words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.
[0049] FIG. 1 is a block diagram illustrating the configuration of a digital map production system capable of verifying changes in the position of a ground object according to an embodiment of the present invention.
[0050] As described above, the system according to the present invention performs the function of assigning certain attribute information to a polyline belonging to a polygon, comprising: a data input module (10) that receives a digital map created by a worker using digital map creation software (A); a creation module (20) that creates an MPolygon object by analyzing the geometric relationship of a polyline configured in the polygon when the worker selects a polygon object in the digital map; an attribute information setting module (30) that sets the value of attribute information linked to the polyline; an attribute information attachment module (40) that links the set attribute information to the polyline; a search extraction module (50) that searches for MPolygons existing in the digital map; a modification module (60) that removes or maintains the link status of attribute information linked to the polyline in the digital map; a database module (70) that registers and manages MPolygon objects as a list; and the MPolygon object extracted through the search extraction module (50). It is composed of a display module (80) that displays an MPolygon using a screen or a separately provided output device (81) so that an operator can check it, an object comparison module (100) that compares a digital map with a target terrain image and a digital map of object types such as an MPolygon object, a polygon object, and a polyline object for which digital map production is completed, an object modification module (110) that modifies objects with different locations as a result of comparison to match the terrain image, and a control module (90) that controls the components (10, 20, 30, 40, 50, 60, 70, 80, 100, 110) according to the procedure of the operation program so that polygons can be searched, created, and edited on the digital map.
[0051] In this embodiment, the processing of the digital map is performed by digital map production software (A), and although the details thereof will be omitted below, it is preferable to understand that the series of production methods disclosed in the present invention includes some functions of the digital map production software (A).
[0052] In other words, it is possible to verify the digital map saved as the above DWG file by receiving it as input and using AutoCAD.
[0053] Here, the above-mentioned digital map production software (A) is set to AutoCAD, but the present invention is not limited thereto.
[0055] FIG. 2a is an exemplary diagram showing a screen in which a creation module unit according to an embodiment of the present invention creates an MPolygon object; FIG. 2b is an exemplary diagram showing a screen in which an attribute information attachment module unit according to an embodiment of the present invention links attribute information to a polyline of the corresponding polygon; FIG. 2c is an exemplary diagram showing a screen in which a partial addition module according to an embodiment of the present invention registers a partial polygon; FIG. 2d is an exemplary diagram showing a screen in which a partial removal module according to an embodiment of the present invention deletes a partial polygon; FIG. 2e is an exemplary diagram showing a screen in which a release module according to an embodiment of the present invention removes an attribute information value linked to a polyline of the corresponding polygon; FIG. 2f is an exemplary diagram showing a screen in which a control module unit according to an embodiment of the present invention searches for, creates, and edits a polygon; FIG. 3a is an overall flowchart showing a method for creating multiple polygons using attribute information of a digital map object according to an embodiment of the present invention; FIG. 3b is according to an embodiment of the present invention FIG. 4 is a detailed flowchart showing a method for assigning attribute information to a polygon or multiple polygons, FIG. 4 is a block diagram showing the configuration of an attribute information module according to an embodiment of the present invention, FIG. 5 is a diagram showing a control module scanning a digital map, an attribute information setting module setting attribute information, and an attribute information attachment module linking attribute information to a polygon according to an embodiment of the present invention.
[0056] When the creation module (20) selects a polyline on the digital map using the object selection module (21), the verification analysis module (22) analyzes geometric relationships by considering whether the polyline is closed, whether there is a shared polyline between polygons, whether the polylines intersect, or whether there is an independent polyline inside the polyline, and then creates a single polygon or a multi-polygon as an MPolygon object through the object creation module (23) as shown in FIG. 2a.
[0057] Here, if it is confirmed that two or more polygons share a single polyline, the two or more polygons are considered to form a multipolygon and are managed as a single MPolygon object.
[0058] Meanwhile, the verification analysis module (22) ignores the polylines because if they are not closed or intersect each other, the polylines cannot form a polygon, and if there is an independent polyline inside the polyline, it determines it as the corresponding HOLE.
[0059] For reference, a multipolygon is an object formed by multiple polygons.
[0060] In other words, if the number of polygons in an MPolygon object is 1, it becomes a Polygon object, and if it is 1 or more, it becomes a MultiPolygon object.
[0061] Ultimately, an MPolygon object treats a single polygon or multiple polygons as a single object, enabling more efficient management of polygons.
[0062] The generation module (20) according to the present invention will be explained in more detail.
[0063] The object selection module (21) of the generation module (20) checks the polyline drawn on the digital map, and the verification analysis module (22) checks whether the polyline is closed, whether two or more polygons share one polygon, whether it intersects with another polyline, whether there is another polyline inside the polyline, etc., and creates the MPolygon object shown in FIGS. 4 and 5, and stores the object data of the MPolygon object in the database module (70).
[0064] The scan module (31) of the attribute information setting module (30) scans the digital map recognized by the creation module (20), and the polygon location verification module (32) verifies the location of the MPolygon objects (101, 102, 103, 104, 105).
[0065] Additionally, the attribute information setting module (33) of the attribute information setting module (30) configures an attribute information table including MID, PID, and HOLE to set attribute information linked to each polyline.
[0066] Here, MID represents a unique value for distinguishing MPOlygons in a digital map, PID represents a serial number of polygons belonging to a multi-polygon, and HOLE represents a value indicating whether an individual polyline belonging to a polygon is a hole, wherein if the value of the hole is 1, it means that it is a Hole object, and if the value is 0, it means that it is a Boundary object (a boundary line in the strict sense specified in a map or drawing).
[0067] To explain in more detail the process of the attribute information setting module (30) according to the present invention automatically setting attribute information in a digital map, the scan module (31) of the attribute information setting module (30) performs one or more of longitudinal scanning (111) and transverse scanning (112) in the digital map.
[0068] In an embodiment according to the present invention, automatic setting of attribute information by longitudinal scanning (111) is described as an example.
[0069] As shown in FIG. 4, the scan module (31) of the attribute information setting module (30) performs longitudinal scanning (111) of the numeric map output to the display module (80) and checks the polylines detected first in order.
[0070] Subsequently, the polygon location verification module (32) first verifies the location of the MPolygon object and the constituent polygon of the detected polyline, and the attribute information setting module (33) sets the attribute information of the polygon in order based on the verified location information.
[0071] To explain this more specifically, the scan module (31) of the attribute information setting module (30) sequentially detects polylines while performing longitudinal scanning (111), the polygon position verification module (32) identifies the MPolygon object to which the polyline belongs by verifying it in the object data, and the attribute information setting module (33) sets the MID of the MPolygon object to which the polyline belongs to '1'.
[0072] Continuing, since the polyline is first detected in the MPolygon object, the PID, which is the target polygon identification code of the polyline, is set to '1', and it is checked whether the polygon is a hole; if it is a hole, HOLE is set to '1', and if it is not a hole, it is set to '0'.
[0073] Ultimately, the attribute information setting module (33) automatically sets the attribute information of the polygon to (1,1,0).
[0074] Subsequently, the polygon position verification module (32) considers the polyline newly detected by the scan module (31) as the next polygon, and the attribute information setting module (33) automatically sets the attribute information of the polygon to (1,2,0) according to the procedure described above, and the next polygon is automatically set to (1,3,0).
[0075] In this process, attribute information is automatically set continuously until all polylines are detected, and the first MPolygon object (101) has 6 polylines detected and attribute information is automatically set to the corresponding polygon.
[0076] Next, when all polygon-specific attribute information of the first MPolygon object (101) is set, the second MPolygon object (102) is checked and its MID is set to '2'.
[0077] For reference, since the second MPolygon object (102) consists of one polygon, the attribute information of the second MPolygon object (102) is automatically set to (2,1,0).
[0078] Next, the third (103), fourth (104), and fifth MPolygon objects (105) are located on a similar height line.
[0079] However, even if multiple MPolygon objects (103, 104, 105) overlap on a similar height line, the attribute information setting module (30) considers the interconnected polylines as one MPolygon object, detects them first, and assigns them to the same MID, and also considers the polygon formed by the interconnected polylines as one MPolygon object and sets the PID.
[0080] Accordingly, even if the polyline configured in the fourth empolygon object (104) is detected first during the longitudinal scanning (111) process rather than the polyline configured in the third empolygon object (103), the polylines of the third empolygon object (103) that are connected to each other are combined into a single empolygon object to set attribute information, and the polylines of the fourth empolygon object (104) are independently set with new attribute information in parallel.
[0081] Ultimately, the attribute information of the third MPolygon object (103) is automatically set to (3,n,n) regardless of the position of the fourth MPolygon object (104), and the attribute information of the fourth MPolygon object (104) is automatically set to (4,n,n).
[0082] Meanwhile, the fourth MPolygon object (104) has a polygon in the shape of a hole, and thus the automatically set attribute information is (4,1,0) and (4,1,1).
[0083] Of course, the fifth MPolygon object (105) is located between the polygons with attribute information of (4,1,0) and (4,1,1) in the fourth MPolygon object (104), but as previously mentioned, the attribute information is automatically set to (5,1,0) regardless of the fourth MPolygon object (104).
[0084] As described above, the attribute information setting module (30) scans a digital map to determine the position order of the MPolygon objects, combines the determined position order with the MPolygon object information determined by the creation module (20) to automatically set attribute information for each polygon, and then stores it in the database module (70).
[0085] Meanwhile, as in the above-described embodiment, when two or more MPolygon objects on the same position line are detected during longitudinal scanning (111), the MPolygon objects are transversely scanned (112) and attribute information is automatically set in the corresponding detection order.
[0086] The attribute information attachment module (40) links the set attribute information to a polyline as shown in FIG. 2b. Specifically, the attribute information (MID, PID, HOLE) described above is configured to link the attribute information to the polylines forming each polygon.
[0087] This configures attribute information based on the polylines selected by the user on the digital map when they form a multipolygon, and links the attribute information to each polyline.
[0088] Meanwhile, when a polyline selected by the user in a digital map forms a polygon, attribute information (MID, PID, HOLE) is configured as described above and linked to each polyline. At this time, the polyline may include a hole.
[0089] Additionally, the search extraction module (50) searches for a polyline on a digital map, generates a multi-polygon accordingly, extracts a polyline within the multi-polygon, and then registers the processing object as a Boundary object when HOLE is 0 and registers the processing object as a HOLE object when HOLE is 1, thereby storing and managing attribute information of the MPolygon object.
[0090] Here, the MPolygon object stored in the database module (70) can be managed by editing or changing it to another format.
[0091] The change module (60) converts the MPolygon into a closed polyline by adding or removing polygons or removing all attribute information of the MPolygon.
[0092] Specifically, the modification module (60) includes a partial addition module (51) that adds a polygon to an MPolygon as shown in FIG. 2c by considering the geometric relationship between the polylines belonging to the previously registered MPolygon and the polylines selected by the user to add using the verification analysis module (22) and reconstructing attribute information by the setting module (30) and attaching it to the polylines, a partial removal module (52) that deletes a portion of the polygon selected by the operator from the previously registered MPolygon as shown in FIG. 2d, and a release module (53) that removes attribute information attached to all polylines belonging to the previously registered MPolygon as shown in FIG. 2e.
[0093] At this time, it is preferable for the release module (53) to remove the previously registered MPolygon object from the database module (70).
[0094] The object comparison module (100) compares the ground image of an object type, such as an MPolygon object, a polygon object, or a polyline object, completed according to the above-described process, with the terrain image that is the target of the polygon object.
[0096] FIG. 6 is an image showing an object comparison module according to an embodiment of the present invention comparing a ground object image of the type of MPolygon object, polygon object, and polyline object with a terrain image; FIG. 7 is an image showing an object modification module according to an embodiment of the present invention preparing to modify the position of a ground object image based on a terrain image; and FIG. 8 is an image showing an object modification module according to an embodiment of the present invention modifying a ground object image to match a terrain image.
[0097] To this end, the object comparison module (100) searches for a target terrain image of a digital map completed by polygon technology in the database module (70), and compares the terrain image and the ground object image of the digital map based on the digital coordinates, as shown in FIG. 6.
[0098] As a result of the comparison, it is confirmed that the position of the second ground object image is out of place relative to the second terrain image.
[0099] The object modification module (110) checks this and, as shown in FIGS. 7 and 8, moves the second ground object image to match the second terrain image to update the ground object image of the target object type, such as an MPolygon object, a polygon object, or a polyline object.
[0100] Ultimately, after the operator completes the draft of the numerical map of the object type, there is no need to individually check whether the position of the ground object image is correct; instead, it is automatically processed through the image combination of the object comparison module (100) and the modification of the object modification module (110), thereby enabling efficient and accurate error verification and processing.
[0101] As shown in FIG. 2f, the control module (90) performs the function of generating multiple polygons using attribute information of a digital map object by controlling the data input module (10), the creation module (20), the attribute information setting module (30), the attribute information attachment module (40), the search extraction module (50), the change module (60), the database module (70), the display module (80), the object comparison module (100), and the object modification module (110).
[0102] Hereinafter, a method for generating attribute information of a numeric map object through a system configured as described above is described with reference to FIGS. 3a and FIGS. 3b.
[0103] First, the control module (90) receives a digital map produced in a different file format (SHP, NGI, etc.) from the operator as shown in FIG. 3a (S2). Although the present embodiment is set to receive the digital map from the outside, the present invention is not limited to this and the operation is possible even when only the execution screen (DWG screen) is executed.
[0104] Next, the control module (90) assigns attribute information to the polyline (S4). That is, referring to FIG. 3b, the control module (90) generates a new unique ID value (S4a) in step S4, which assigns attribute information to the polyline. Here, the ID can be understood as representing a unique value for identifying a polygon or multiple polygons.
[0105] Next, the control module (90) initializes the PID to 'count= 0' to process polygon objects or multi-polygon objects that make up the digital map (S4b). Here, count can be understood as representing the number of polygon objects or multi-polygon objects that make up the digital map.
[0106] First, the control module (90) links attribute information to the Boundary polyline within the MPolygon object (S4c). Specifically, the control module (90) searches for polygons within the MPolygon object on the digital map (S4c1), and then generates attribute information (MID, PID, HOLE) corresponding to the polygons (S4c2). At this time, it is preferable that the count be automatically set to 'count+1', and the count order of the polygons is set sequentially according to the scanning order of the attribute information setting module (30) as described above.
[0107] The control module (90) sets the attribute information value of the extracted polygon to 'MID = id, PID = count, HOLE = 0' (S4c3), and then links the set attribute information to the Boundary polyline within the MPolygon.
[0108] The control module (90) searches for a HOLE polyline within an MPolygon on a digital map (S4d1), and then generates attribute information (MID, PID, HOLE) according to the polyline (S4d2).
[0109] The control module (90) sets the attribute information value of the extracted Hole polyline to 'MID = id, PID = count, HOLE = 1' (S4d3), and then links the set attribute information to the Hole polyline within the polygon.
[0110] Next, the control module (90) searches for an MPolygon object with attribute information linked to a digital map and selects a processed object (S6). At this time, the control module (90) checks the attribute information (MID, PID, HOLE) linked to the processed object (S8).
[0111] The control module (90) determines whether an MPolygon is searched among the objects stored in the database module (70) using 'MID' among the attribute information (S10).
[0112] In the above step S10, when an MPolygon is searched, the control module (90) determines whether a polygon is searched in the MPolygon using 'PID' (S12).
[0113] In the above step S12, when a polygon is found, the control module (90) determines whether 'HOLE=1' (S14). That is, if the result of the determination in step S14 is 'HOLE=1', the control module (90) registers the processing object as a Hole object in the found polygon (S16).
[0114] Next, the control module (90) registers a polygon in the MPolygon (S18). That is, if it is a newly created polygon, the polygon is registered in the MPolygon. At this time, the control module (90) sets the unique key of the MPolygon to 'MID' (S20).
[0115] Next, the control module (90) registers the MPolygon in the database module (70) (S22). This registers the MPolygon in the database module (70) in the case of a newly created MPolygon.
[0116] Finally, the control module (90) registers and manages the new polygon and the new MPolygon containing the new polygon in the database module (70).
[0117] On the other hand, if the result of the judgment in step S14 is 'HOLE=0', the control module (90) registers the processing object as a Boundary object to the searched polygon (S24). If, in step S12, no polygon is searched, the control module (90) creates a new polygon (S26).
[0118] In addition, in the above step S10, if an MPolygon is not found, the control module (90) generates a new MPolygon (S28).
[0120] FIG. 9 is a drawing showing the overall appearance of a display module part according to an embodiment of the present invention, and FIG. 10 is a drawing showing the internal appearance of an installation support unit according to an embodiment of the present invention.
[0121] As described above, the display module (80) according to the present invention comprises an installation support unit (300) installed on the ground, an installation coupling plate (400) coupled to the upper part of the installation support unit (300), a plurality of radiation support members (430) coupled to the upper part of the installation coupling plate (400), a heat radiation plate (420) coupled to the upper part of the radiation support members (430), a heat transfer support member (200) mounted on the upper part of the heat radiation plate (420), a heat transfer plate (410) mounted on the upper part of the heat transfer support member (200), and an output device (81) coupled to the upper part of the heat transfer plate (410).
[0122] When the heat transfer plate (410) is arranged transversely on the upper part of the heat transfer support (200) and the heat radiating plate (420) is arranged transversely on the lower part of the heat transfer support (200), heat generated from the output device (81) is released to the outside through the heat transfer plate (410), the heat transfer support (200), and the heat radiating plate (420).
[0123] The above plurality of radiation supports (430) are arranged vertically between the heat radiating plate (420) and the installation coupling plate (400), and a space is formed between the heat radiating plate (420) and the installation coupling plate (400) by the plurality of radiation supports (430) so that heat can be smoothly emitted to the outside.
[0124] The above-mentioned installation support unit (300) is positioned at the bottom of the output device (81) and comprises an installation support case (310) with a hollow interior, an upper and lower adjustment part (320), a pair of left and right fixing parts (330), and a pair of fixing reinforcement parts (340).
[0125] The above-described vertical adjustment unit (320) is coupled to the center of the inner lower surface of the installation support case (310) and is movable vertically. A pair of supplementary fastening units (321) having a concave groove are coupled to the upper part of the vertical adjustment unit (320).
[0126] The above pair of left and right fixing parts (330) are coupled to both sides of the inner lower surface of the installation support case (310) and are arranged to face each other with the upper and lower adjustment part (320) in between. The pair of left and right fixing parts (330) fix both sides of the installation coupling plate (400).
[0127] The above left and right fixing part (330) includes an up-and-down operating part (331) which is coupled to the inner lower surface of the installation support case (310) so as to be movable up and down, a fixed support part (332) which is spaced apart from the up-and-down operating part (331) and fixedly coupled to the inner lower surface of the installation support case (310), a lower fastening plate (333) which is coupled horizontally to the upper end of the fixed support part (332) and has a plurality of lower fastening teeth (334), and an upper fastening plate (335) which has one end rotatably coupled to the upper end of the up-and-down operating part (331), and a central part rotatably coupled to the upper end of the lower fastening plate (333) and has a plurality of upper fastening teeth (336).
[0128] When the upper and lower operating part (331) moves upward, one end of the upper fastening plate (335) moves upward together, and the other end of the upper fastening plate (335) moves downward, so that the upper fastening tooth (336) and the lower fastening tooth (334) interlock with each other. An installation coupling plate (400) is coupled between the interlocked upper fastening tooth (336) and the lower fastening tooth (334), and accordingly, the output device (81) is firmly fixed.
[0129] Conversely, when the upper and lower operating part (331) moves downward, one end of the upper fastening plate (335) moves downward together, and the other end of the upper fastening plate (335) moves upward, thereby releasing the engagement between the upper fastening tooth (336) and the lower fastening tooth (334).
[0130] A left and right fastening plate (337) is coupled to the other end of the upper fastening plate (335) so as to be movable left and right, and a left and right elastic member (338) is coupled between the upper fastening plate (335) and the left and right fastening plate (337) to provide elastic force to the left and right fastening plate (337).
[0131] The above left and right fastening plates (337) support the side portions of both sides of the radiation support (430) to prevent the radiation support (430) from shaking, and thereby prevent the output device (81) from shaking. This elastic structure absorbs minute differences in the dimensions of the radiation support (430) and, at the same time, prevents vibrations generated during operation from being transmitted to the output device (81), thereby enabling precise operation.
[0132] The above pair of fixed reinforcement parts (340) are provided at the bottom of the installation coupling plate (400) and are linked with the upper and lower adjustment part (320) to perform temporary fixing and position alignment in the stage prior to fastening the output device (81).
[0133] Specifically, the fixed reinforcement member (340) comprises a fixed reinforcement case (341) coupled to the lower part of the installation coupling plate (400), a fixed reinforcement elastic member (342) coupled to the inner side of the fixed reinforcement case (341), a fixed reinforcement rod (343) having one end coupled to the fixed reinforcement elastic member (342) and capable of moving left and right inside the fixed reinforcement case (341), a circular fixed fastening part (344) coupled to the other end of the fixed reinforcement rod (343) and capable of being housed inside the fixed reinforcement case (341) or exposed to the outside, and a temporary fixing part (345) mounted to be movable left and right on the inner lower surface of the fixed reinforcement case (341), having one end protruding to the outside of the fixed reinforcement case (341) and the other end contacting the lower surface of the fixed reinforcement rod (343).
[0134] One side of the temporary fixing part (345) is formed in a rod shape and protrudes outside the fixing support case (341), and the other side of the temporary fixing part (345) is formed in a semicircle shape and can contact and support the lower surface of the fixing support rod (343). The vertical width of one side of the temporary fixing part (345) is relatively smaller than the vertical width of the other side of the temporary fixing part (345).
[0135] The diameter of the fixed fastening part (344) is approximately the same as or relatively slightly smaller than the inner upper and lower width of the fixed supplementary case (341), and when the other side of the temporary fixing part (345) contacts the lower surface of the fixed supplementary rod (343), the fixed supplementary rod (343) is vertically displaced upward and compressed and fixed, so that left and right movement is temporarily stopped and fixed.
[0136] Normally, the above temporary fixing part (345) moves toward the fixed fastening part (344) to contact and support the lower surface of the fixed support rod (343), and the fixed fastening part (344) is maintained in a state of being housed inside the fixed support case (341).
[0137] When the upper and lower adjustment part (320) moves upward and comes into contact with the lower surface of the installation coupling plate (400), the temporary fixing part (345) moves in the opposite direction of the fixing fastening part (344) and is separated from the lower surface of the fixing reinforcement rod (343), and the fixing fastening part (344) is ejected to the outside of the fixing reinforcement case (341) by the elastic force of the fixing reinforcement elastic member (342).
[0138] The externally protruding fixed fastening part (344) is inserted into and fixed to the supplementary fastening part (321) having a concave groove, and the output device (81) is fixed to the upper part of the vertical adjustment part (320), and the vertical adjustment part (320) moves downward so that the entire device moves downward. At this time, the vertical adjustment part (320) can adjust the height of the output device (81) and simultaneously distribute the load.
[0139] With the output device (81) moved downward, a pair of left and right fixing parts (330) are operated to firmly fix both sides of the installation coupling plate (400), and the output device (81) is also firmly fixed.
[0140] Thus, the present invention supports the output device (81) at multiple points, such as the supplementary fastening part (321) of the upper and lower adjustment part (320), the fixed fastening part (344) of the fixed supplementary part (340), the upper fastening plate (335) and the lower fastening plate (333), and the left and right fastening plates (337), thereby allowing the output device (81) to be fixed without shaking. Furthermore, since engagement and disengagement are possible with simple movements, maintenance and replacement work are easy, and the alignment state can be maintained consistently even under external vibrations.
[0142] FIG. 11 is a drawing showing a state in which a heat transfer support member according to an embodiment of the present invention is mounted between a heat transfer plate and a heat radiating plate, FIG. 12 is a drawing schematically showing a heat transfer support member according to an embodiment of the present invention, and FIG. 13 is a drawing schematically showing a first heat transfer member and a second heat transfer member of a heat transfer support member according to an embodiment of the present invention.
[0143] The heat transfer support member (200) according to the present invention is positioned between the heat transfer plate (410) and the heat radiating plate (420) and can elastically press the heat transfer plate (410) in the direction of the output device (81) and can perform a cooling function of the output device (81).
[0144] The above heat transfer support member (200) comprises a base member (210), an elastic support member (220) disposed inside the base member (210) such that one side contacts the lower base (212) of the base member (210) and the other side contacts the upper base (211) of the base member (210) to elastically support the lower base (212) and the upper base (211), an elastic guide member (230) disposed spaced apart from the elastic support member (220) such that one side is fixed to the lower base (212) and the other side is fixed to the upper base (211), and the one side is inserted into the other side and elastically supported in the inserted state, and a first heat transfer member (240) disposed in the center of the base member (210) such that the upper side contacts the heat transfer plate (410) and the other side is exposed to the outside of the heat radiation plate (420) to transfer heat to the atmosphere, and the It includes a plurality of second heat transfer sections (250) spaced apart from the first heat transfer section (240), with the upper side in contact with the heat transfer plate (410) and the other side exposed to the outside of the heat radiation plate (420) to transfer heat to the atmosphere.
[0145] The base portion (210) is composed of a lower base (212) and an upper base (211), and an elastic support portion (220) and an elastic guide portion (230) are disposed in the internal space between the lower base (212) and the upper base (211).
[0146] The upper base (211) is located on the side in contact with the heat transfer plate (410), and the lower base (212) is located on the upper side of the heat radiating plate (420), and the gap between the lower base (212) and the upper base (211) is adjusted by the elastic force of the elastic support part (220) and the elastic guide part (230).
[0147] The above elastic support member (220) includes a first support base (221) fixed to the lower surface of the upper base (211), an elastic member (222) with its upper portion fixed to the first support base (221), and a second support base (223) fixed to the upper surface of the lower base (212) and connected to the lower portion of the elastic member (222).
[0148] The above elastic member (222) may be composed of a coil spring and is compressed and stretched between the first support base (221) and the second support base (223) to provide elastic force between the lower base (212) and the upper base (211). The elastic support member (220) serves to maintain a constant elastic force so that the heat transfer plate (410) can be pressed against the output device (81) with uniform pressure.
[0149] The elastic guide part (230) comprises a guide body (231) fixed to the lower surface of the upper base (211), a lifting guide (232) whose upper end is inserted into a body groove formed in the lower part of the guide body (231) and whose lower end is fixed to the upper surface of the lower base (212), and a guide elastic part (233) disposed inside the body groove to elastically support the upper part of the lifting guide (232).
[0150] The above elastic guide part (230) is spaced apart from the elastic support part (220) and serves to guide the lifting movement of the base part (210). The lifting guide (232) is inserted into the body groove of the guide body (231) and can slide in the up and down direction. It is elastically supported by the guide elastic part (233), enabling stable linear movement without shaking during the lifting movement of the base part (210).
[0151] Accordingly, the elastic guide part (230) provides a uniform elastic force to the heat transfer plate (410) together with the elastic support part (220), while accurately maintaining the lifting direction of the base part (210).
[0152] The first heat transfer section (240) may be formed with a larger contact area with the heat transfer plate (410) than each of the second heat transfer sections (250). The first heat transfer section (240) is positioned in the center of the base section (210) to intensively absorb heat generated in the center of the heat transfer plate (410), and a plurality of second heat transfer sections (250) are spaced apart from the first heat transfer section (240) to disperse and absorb heat generated in the periphery of the heat transfer plate (410). Through this, an even cooling effect can be achieved across the entire heat transfer plate (410).
[0153] The elastic support member (220) and the elastic guide member (230) can elastically press the heat transfer plate (410) in the direction of the output device (81). The elastic member (222) of the elastic support member (220) and the guide elastic member (233) of the elastic guide member (230) cooperate to press the base member (210) upward, thereby ensuring that the heat transfer plate (410) adheres uniformly and stably to the output device (81). In this process, the elastic guide member (230) guides the vertical movement of the base member (210) so that the heat transfer plate (410) can make surface contact with the output device (81) without eccentricity.
[0154] The first heat transfer member (240) penetrates the lower first hole (212a) formed in the lower base (212) and is coupled to the upper first hole (211a) formed in the upper base (211) to make surface contact with the heat transfer plate (410), and the plurality of second heat transfer members (250) penetrate each lower second hole (212b) formed in the lower base (212) and are coupled to each upper second hole (211b) formed in the upper base (211) to make surface contact with the heat transfer plate (410).
[0155] The first heat transfer section (240) may be formed in a solid cylindrical shape, and the second heat transfer section (250) may be formed in a solid plate shape. The first heat transfer section (240) and the second heat transfer section (250) may be formed from a metal material with high thermal conductivity, such as copper or aluminum, and exhibit efficient cooling performance by combining a conduction method through surface contact with the heat transfer plate (410) and a convection method outside the heat radiating plate (420).
[0156] A cylindrical first heat transfer section (240) concentrates and absorbs heat from the heat transfer plate (410) with a wide contact area at the center of the base section (210), and a plurality of plate-shaped second heat transfer sections (250) are spaced apart around the first heat transfer section (240) to disperse and absorb heat from the heat transfer plate (410), thereby maximizing cooling efficiency.
[0157] Effective cooling action can be performed without a separate cooling means by means of the first heat transfer unit (240) and the second heat transfer unit (250) provided in the heat transfer support unit (200). Specifically, the upper side of the first heat transfer unit (240) and the second heat transfer unit (250) is in surface contact with the heat transfer plate (410), so that heat generated from the heat transfer plate (410) is conducted to the first heat transfer unit (240) and the second heat transfer unit (250), and the other side of the first heat transfer unit (240) and the second heat transfer unit (250) is exposed to the outside of the heat radiation plate (420) and comes into contact with the atmosphere, thereby releasing heat to the outside by convection.
[0158] At this time, the cylindrical first heat transfer section (240) intensively absorbs heat from the center of the heat transfer plate (410) at the center of the base section (210), and the plate-shaped multiple second heat transfer sections (250) are spaced apart around the first heat transfer section (240) to disperse and absorb heat from the periphery of the heat transfer plate (410), thereby achieving a uniform cooling effect over the entire heat transfer plate (410).
[0159] In this way, the present invention can prevent malfunction or damage to parts caused by overheating during the operation of the output device (81) by a cooling method that combines conduction and convection, and can improve the durability and operational stability of the device.
[0160] It will be obvious to those skilled in the art that the invention described above is not limited by the aforementioned embodiments and attached drawings, and that various substitutions, modifications, and changes can be made within the scope of the technical concept of the invention. Explanation of the symbols
[0162] 10 : Data Input Module 20 : Generation Module 30 : Attribute Information Setting Module 40 : Attribute Information Attachment Module 50 : Search Extraction Module 60 : Modification Module 70: Database Module 80: Display Module 81: Output device 90: Control module 100 : Object Comparison Module 110 : Object Modification Module 200 : Heat transfer support part 210 : Base part 211 : Upper base 211a : Upper first hole 211b : Upper 2nd hole 212 : Lower base 212a : Lower 1st hole 212b : Lower 2nd hole 220: Elastic support part 221: First support base 222 : Elastic member 223 : Second support base 230 : Elastic guide part 231 : Guide body 232 : Lifting guide 233 : Guide elastic part 240: 1st heat transfer section 250: 2nd heat transfer section 300 : Installation support unit 310 : Installation support case 320: Vertical adjustment part 321: Supplementary fastening part 330: Left / Right Fixing Part 331: Up / Down Operating Part 332 : Fixed support part 333 : Lower fastening plate 334 : Lower fastening part 335 : Upper fastening plate 336 : Upper fastening part 337 : Left and right fastening plates 338 : Left and right elastic members 340 : Fixed reinforcement member 341 : Fixed reinforcement case 342 : Fixed reinforcement elastic member 343 : Fixed reinforcement rod 344 : Fixed fastening part 345 : Temporary fixing part 400 : Installation connecting plate 410: Heat transfer plate 420: Heat radiator 430 : Radiation support
Claims
Claim 1 A data input module that receives a digital map produced using digital map production software; a generation module that generates an MPolygon object by analyzing the geometric relationships of polylines; an attribute information setting module that sets attribute information of polylines; an attribute information attachment module that links attribute information to polylines; a search and extraction module that searches for MPolygon objects existing in the digital map; a modification module that adds or removes polygons to MPolygon objects or removes attribute information of MPolygon objects; a database module that stores digital map information, MPolygon objects, polygon objects, polyline objects, and attribute information for each object; a display module that displays the MPolygon objects extracted by the search and extraction module on an output device; and a control module that generates polygons constituting the MPolygon objects and attribute information for each polygon; wherein the display module comprises: an installation support unit installed on the ground; an installation coupling plate coupled to the upper part of the installation support unit; a plurality of radiation supports coupled to the upper part of the installation coupling plate; and a heat radiation plate coupled to the upper part of the radiation supports. A heat transfer support member mounted on the upper part of a heat radiating plate; a heat transfer plate mounted on the upper part of the heat transfer support member; and an output device coupled to the upper part of the heat transfer plate; wherein the heat transfer support member comprises: a base member contacting the lower part of the heat transfer plate; an elastic support member disposed inside the base member, having one side contacting the lower base of the base member and the other side contacting the upper base of the base member to elastically support the lower base and the upper base; an elastic guide member spaced apart from the elastic support member, having one side fixed to the lower base and the other side fixed to the upper base, and having one side inserted into the other side and elastically supported in the inserted state; a first heat transfer member disposed in the center of the base member, having an upper side contacting the heat transfer plate and an other side exposed to the outside of the heat radiating plate to transfer heat to the atmosphere; and a plurality of second heat transfer members spaced apart from the first heat transfer member, having an upper side contacting the heat transfer plate and an other side exposed to the outside of the heat radiating plate to transfer heat to the atmosphere. The elastic support member comprises: a first support base fixed to the lower surface of an upper base; and an elastic member with its upper portion fixed to the first support base.and a second support base fixed to the upper surface of the lower base and connected to the lower part of the elastic member; wherein the elastic guide part comprises: a guide body fixed to the lower surface of the upper base; a lifting guide having its upper side inserted into a body groove formed in the lower part of the guide body and its lower side fixed to the upper surface of the lower base; and a guide elastic part disposed inside the body groove to elastically support the upper part of the lifting guide. The first heat transfer member is formed with a larger contact area with the heat transfer plate than each second heat transfer member, and the elastic support member and elastic guide member elastically press the heat transfer plate in the direction of the output device; the first heat transfer member penetrates a lower first hole formed in the lower base and is coupled to an upper first hole formed in the upper base to make surface contact with the heat transfer plate; the plurality of second heat transfer members penetrate each lower second hole formed in the lower base and are coupled to each upper second hole formed in the upper base to make surface contact with the heat transfer plate; the first heat transfer member is formed in a cylindrical shape with a solid interior, and the second heat transfer member is formed in a plate shape with a solid interior; the installation support unit comprises: an installation support case disposed at the bottom of the output device and having a hollow interior; an up-and-down adjustment member coupled to the center of the inner lower surface of the installation support case and capable of moving up and down; and a pair of left and right fixing members coupled to both sides of the inner lower surface of the installation support case and arranged to face each other with the up-and-down adjustment member in between. A digital map production system capable of verifying changes in the position of a ground object, comprising: a pair of fixed supplementary members provided at the lower part of an installation coupling plate; wherein the left and right fixing members include: an up-and-down operating member coupled to the inner lower surface of an installation support case so as to be movable up and down; a fixed support member spaced apart from the up-and-down operating member and fixedly coupled to the inner lower surface of the installation support case; a lower fastening plate coupled transversely to the upper part of the fixed support member and having a plurality of lower fastening teeth; and an upper fastening plate having one end rotatably coupled to the upper part of the up-and-down operating member, and a central part rotatably coupled to the upper part of the lower fastening plate and having a plurality of upper fastening teeth.