KR102630365B1 - Digital map production system for improving reliability using field survey data - Google Patents

Abstract

The present invention relates to a digital map production system, and more specifically, to a plurality of permanent observatories that communicate with artificial satellites and confirm the current numerical coordinates, a mobile station that communicates with artificial satellites and corrects digital map images, and the current confirmed by a plurality of permanent observatories. It is characterized in that it includes a virtual reference point server that receives numerical coordinates, generates a position correction value and transmits it to the mobile station, and a distance information collector that measures the moving distance of the mobile station in real time and displays the distance value on the moving path. In order to measure high-accuracy numerical coordinates for an area, we produce a digital map that can improve reliability by using field survey data according to topographical changes that can confirm numerical coordinates using VRS-based network RTK technology and general RTK technology, respectively. It's about the system.

Description

Digital map production system that can improve reliability by using field survey data according to topographical changes {DIGITAL MAP PRODUCTION SYSTEM FOR IMPROVING RELIABILITY USING FIELD SURVEY DATA}

The present invention relates to a digital map production system, and more specifically, to a digital map production system that can improve reliability by using field survey data according to topographical changes.

In general, a digital map refers to a map that expresses the geographical and topographic content to be expressed in numbers, such as a chart showing the water depth in numbers, a topographic map showing the relief of the terrain, etc. there is. In other words, a digital map expresses the geographical/topographical characteristics of a specific point as numerical information and applies it to a drawn image.

The process of building a numerical map is completed through several processes as follows. First, the paper map becomes a digital map through digitizing or scanning, and then goes through procedures to correct various input errors.

Subsequently, through coordinate transformation, it is converted into an actual coordinate system to suit the user's purpose, and then a topological structure is established to determine the mutual location and correlation between spatial objects. Afterwards, attribute data related to each geometrical data are entered into the numerical map whose topological structure has been established.

At this time, the above-mentioned attribute data includes various identifier information, and as an example, a feature electronic identifier (UFID: Unique Feature Identifier) is used as an identifier for a feature in a digital map of the National Geographic Information Institute, which is used for a feature. It is a single identifier that represents the assigned location information, management agency, other attribute information, etc. and is uniquely assigned to a geographical feature. It is composed of an organization code, map number, geographical feature identification code, and serial number field, and is used to manage the geographical feature, It is used as an identifier for linking with other geographic information or cross-referencing between geographical features for search and utilization.

The digital maps produced in this way enable faster and more accurate map searches than paper maps, and are superior in terms of information management and usability, allowing them to more effectively support various planning and decision-making.

In a digital map, the numerical spatial information about the relevant point must be accurately applied to the drawn image so that the user can easily obtain geographical and topographical information while looking at the map, and the drawn image must also be accurately depicted according to the spatial information.

In this process, in areas where the accuracy of numerical coordinates such as GNSS location information is relatively low (hereinafter referred to as 'occluded areas'), such as urban areas with high communication volume or points far from a reference station or permanent observation station, the numerical values of other adjacent areas are collected. Refer to the coordinates to check the numerical coordinates of the occluded area.

However, since the numerical coordinates directly checked in the field are applied to the digital map image that serves as the background of the digital map, inaccurate numerical coordinates can lead to the production of inaccurate digital maps.

In order to improve this, it is possible to effectively check for errors by comparing existing digital maps for buildings that have not been realistically processed in conventionally produced realistic appraisal images, or for buildings that are outside the accuracy range set by the inspector even for buildings that have been processed. The technology has been disclosed.

However, the prior art is only a technology for evaluating and correcting the digital map image of a digital map, and is not a technology for correcting the numerical coordinates themselves by checking inaccuracies in the numerical coordinates. Therefore, the prior art also provides a high level of information about the current location to the user of the digital map. There is a problem in that it does not provide reliable information.

The matters described as background technology above are only for the purpose of improving understanding of the background of the present invention, and should not be taken as recognition that they correspond to prior art already known to those skilled in the art.

The present invention is intended to solve the problems of the prior art described above. In order to measure the numerical coordinates of a blocked area with high accuracy, the network RTK technology using VRS and the general RTK technology can be used to determine the numerical coordinates of terrain changes. Accordingly, the purpose is to provide a digital map production system that can improve reliability using field survey data.

In addition, the present invention can track the uncertainty of a digital map image for a specific location by identifying the difference between the two types of numerical coordinates, so it is possible to modify and complete a high reliability digital map image without being limited to a specific type of numerical coordinates. Another purpose is to provide a digital map production system that can improve reliability by using field survey data according to possible topographical changes.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description of the present invention. .

The configuration of the present invention to achieve the above object includes a plurality of permanent observatories that check current numerical coordinates while communicating with artificial satellites; A mobile station that communicates with satellites and corrects digital map images; A virtual reference point server that receives the current numerical coordinates confirmed by multiple permanent observation stations, generates a position correction value, and transmits it to the mobile station; and a distance information collector that measures the moving distance of the mobile station in real time and displays the distance value on the moving path; It is characterized by including.

In the digital map production system that can improve reliability by using field survey data according to changes in terrain according to an embodiment of the present invention, the mobile station includes a GNSS module that verifies current numerical coordinates while communicating in real time with an artificial satellite; A network communication module that processes communication with a virtual reference point server; A numerical coordinate correction module that corrects the numerical coordinates confirmed by the GNSS module based on the position correction value received from the virtual reference point server; An image storage module that stores digital map images; An image input/output module that outputs a digital map image retrieved from an image storage module; A supplementary point processing module that processes supplementation for the corresponding point in the digital map image; A photography module that photographs a specific point; Numerical coordinate comparison module that checks and compares the numerical coordinates confirmed based on general RTK and the numerical coordinates confirmed based on network RTK, respectively; and a movement path display module that displays and records the movement path of the mobile station, which is confirmed and displayed based on general RTK, and the movement path of the mobile station, which is confirmed and displayed based on network RTK, together on a digital map image; It is desirable to include.

In the digital map production system that can improve reliability by using field survey data according to topographical changes according to an embodiment of the present invention, the distance information collector includes a base unit; A front wheel whose base is installed to be movable and rotatable about the steering axis for steering; Rear wheels installed in line with the front wheels so that the base moves; A distance confirmation module that counts the number of revolutions of the front wheels and transmits the corresponding count information to the distance value calculation module; A direction confirmation module that is placed on the steering axis and detects and measures the steering angle of the front wheel that changes during movement and transmits it to the distance calculation module; A coupling part coupled to the upper surface of the base; A lifting and lowering control unit provided on one side of the coupling portion; A movable control unit connected to the coupling part and the other side of the lifting control unit to control the inclination and distance; and a mobile station mounted on one side of the movable control unit; It is desirable to include.

In the digital map production system that can improve reliability using field survey data according to topographical changes according to an embodiment of the present invention, the coupling part includes a base body supported on the foundation; A coupling flange provided at the edge of the base body and provided with a plurality of coupling holes; A base plate disposed on the upper part of the base body and spaced apart from the base body; A guide rail provided on the upper surface of the base plate to guide the movement of the movable control unit; A plurality of ball bodies provided on the upper surface of the base body and having support balls; A plurality of elliptical bodies disposed on top of the plurality of ball bodies and supported by support balls; A plurality of grid supports, one side of which is coupled to the base plate and the other side of which is coupled to the oval body to support the base plate; and a plurality of support lines, one side of which is coupled to a plurality of ball bodies and the other side of which is coupled to a plurality of oval bodies to support the plurality of oval bodies. It is desirable to include.

In a digital map production system that can improve reliability by using field survey data according to changes in terrain according to an embodiment of the present invention, one side of the lifting part is hinged to the base body and the other side is hinged to the base plate to form a base. A first lifting cylinder that elevates the plate; and a second elevating cylinder, one side of which is hinged to the base body and the other side of which is hinged to the base plate to elevate and lower the base plate. It is preferable that the first lifting cylinder and the second lifting cylinder are provided to cross each other.

In the digital map production system that can improve reliability using field survey data according to topographical changes according to an embodiment of the present invention, the movable control module includes an LM guide that is movably coupled to a guide rail; A support base provided on the upper part of the LM guide; A support cylinder whose one side is coupled to the support base; A cylinder connector coupled to the other side of the support cylinder; A connecting piece on one side of which is rotatably coupled to the cylinder connector; A support plate on one side of which is hinged to the support base and on the other side of which is coupled to the other side of the connecting piece and rotated like the connecting piece; a first support provided on the support plate to support one side of the mobile station; and a second support provided on the support plate to be spaced apart from the first support and supporting the other side of the mobile station. It is desirable to include.

In a digital map production system that can improve reliability using field survey data according to changes in terrain according to an embodiment of the present invention, a receiving groove is provided at the support base, and when the mobile station is not supported, a support plate is provided in the receiving groove. It is preferred that the support plate is provided with a plurality of coupling grooves, and that the positions of the first support and the second support can be varied by coupling the first support and the second support to the coupling groove selected from the plurality of coupling grooves. .

In a digital map production system that can improve reliability by using field survey data according to changes in terrain according to an embodiment of the present invention, a variable pressurizing part is coupled to the base body to be lifted and lowered and pressurizes the base body to the foundation; It is desirable to further include.

In the digital map production system that can improve reliability using field survey data according to topographical changes according to an embodiment of the present invention, the variable part includes: a pressurizing body disposed in the body groove of the base body and having a semicircular shape; A connection body whose one side is provided on the pressurizing body and whose other side is screwed to the base body; and a rotating part disposed on the upper part of the base body and provided on the connection body to rotate the connection body. It is desirable to include.

The present invention, which has the above configuration, checks the numerical coordinates using network RTK technology and general RTK technology using VRS in order to measure high accuracy numerical coordinates for the occluded area, and places the confirmed numerical coordinates in the existing digital map image. Since it is possible to track the uncertainty of a digital map image for a specific location by displaying it at the same time and identifying the difference between the numerical coordinates of the two methods, it has the effect of modifying and completing a highly reliable digital map image without being limited to the numerical coordinates of a specific method. You can get it.

The attached drawings are intended as reference for understanding the technical idea of the present invention, and are not intended to limit the scope of the present invention.
Figure 1 is a block diagram schematically showing the configuration of a digital map production system that can improve reliability using field survey data according to topographical changes according to an embodiment of the present invention.
Figure 2 is a block diagram showing the detailed configuration of a mobile station according to an embodiment of the present invention.
Figure 3 is an image showing an example of a numerical map image output to an image input/output module according to an embodiment of the present invention.
Figure 4 is an image showing a captured image linked to a digital map image output by an image input/output module according to an embodiment of the present invention.
Figure 5 is an image showing the ground image corrected by the supplementary point processing module according to an embodiment of the present invention.
Figure 6 is a block diagram showing the configuration of an image input/output module according to an embodiment of the present invention.
Figure 7 is a diagram schematically illustrating how a user uses the digital map production system in the field according to an embodiment of the present invention.
Figure 8 is an image showing the location of the mobile station within a digital map image output by the mobile station according to an embodiment of the present invention.
Figure 9 is a diagram showing a mobile station and a distance information collector according to an embodiment of the present invention.
Figure 10 is a plan view schematically illustrating the movement of a mobile station according to an embodiment of the present invention.
Figure 11 is a diagram schematically showing the configuration of a coupling part and a lifting control part according to an embodiment of the present invention.
Figure 12 is a perspective view showing the movable control unit according to an embodiment of the present invention.
Figure 13 is a diagram showing the operation of the movable control unit according to an embodiment of the present invention.

Hereinafter, based on the attached drawings, the present invention will be described in detail so that those skilled in the art can easily practice it. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

In addition, terms or words used in this specification and patent claims should not be construed as limited to their usual or dictionary meanings, and the inventor must appropriately use the concept of terms to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability.

Figure 1 is a block diagram schematically showing the configuration of a digital map production system that can improve reliability using field survey data according to topographical changes according to an embodiment of the present invention, and Figure 2 is an embodiment of the present invention. This is a block diagram showing the detailed configuration of a mobile station according to an example.

First, to help you understand, VRS (Virtual Reference Station) surveying will be explained. The VRS positioning method utilizes data from a distant permanent observation station to determine a virtual reference point in software, assuming that there is a reference point near the mobile station. It is a technology that creates

In the existing DGNSS (Differential Global Navigation Satellite System), when the distance between the reference station and the above observatory becomes more than several hundred kilometers, accuracy deteriorates due to the influence of the ionosphere, etc. However, in the virtual reference point type DGNSS, the accuracy of numerical coordinates is maintained even when moving away from the observatory.

For reference, in order to perform high-precision GNSS (Global Navigation Satellite System) surveying, a reference station must be installed at a reference point whose coordinates are already known, and the mobile station must communicate with the reference station and satellites, so two or more GNSS receivers are always required. is needed. However, if the VRS positioning method is used to use observation data from a permanent observation station installed at an existing reference station, GNSS observations at the reference station become unnecessary.

Therefore, GNSS surveying is possible with a single receiver if the user observes only at unknown points and downloads and uses correction values from the observation data of the regular observatory.

Additionally, because there is no need to operate multiple reference stations, work efficiency is improved and it is more efficient.

The system according to the present invention based on numerical coordinate confirmation using the network RTK (Real Time Kinematic) method using VRS will be described in detail with reference to the attached drawings.

As illustrated in Figures 1 and 2, the system according to the present invention verifies numerical coordinates based on VRS to correct errors in numerical coordinates linked to digital map images, and also compensates for errors in digital map images. .

For this purpose, the system includes a permanent observation station 30 that communicates with a satellite and checks the current numerical coordinates, a mobile station 10 that is carried by an operator and communicates with the satellite and corrects the digital map image according to the operator's operation, and a permanent observation station 30 that communicates with the satellite and verifies the current numerical coordinates It includes a virtual reference point server 20 that receives the current numerical coordinates confirmed by the observation station 30, generates a position correction value, and transmits it to the mobile station 10.

As is well known, the permanent observation station 30 is installed at a reference station, which is a known point, and serves as a standard for error correction of current numerical coordinates confirmed from a satellite.

The current numerical coordinates confirmed at the permanent observation station (30) are transmitted in real time to the ground control point server (20).

The virtual reference point server 20 is a system that verifies numerical coordinates based on network RTK (Real Time Kinematic) by VRS. It establishes network communication with the permanent observatory 30 and receives the numerical coordinates currently confirmed from the permanent observatory 30. Receive in real time.

The numerical coordinates received in this way are compared with the known point coordinates of the permanent observation station 30 to determine the error rate of the numerical coordinates confirmed by the permanent observation station 30, and based on this, a position correction value is generated and transmitted to the mobile station 10. .

The mobile station 10 is carried by workers visiting the site and checks the numerical coordinates in real time, and outputs a digital map image of the site based on the numerical coordinates so that the worker can directly check errors in the digital map image. By correcting identified errors, the digital map image can be supplemented in real time.

For this purpose, the mobile station 10 includes a GNSS module 11 that verifies the current numerical coordinates while communicating with a satellite in real time, a network communication module 12 that processes communication with the virtual control point server 20, and a virtual control point server ( A numerical coordinate correction module 13 that corrects the numerical coordinates confirmed by the GNSS module 11 based on the position correction value received from 20), an image storage module 14 that stores a digital map image, and an image storage module ( An image input/output module (15) that outputs the digital map image retrieved in 14) and operates according to the operator's manipulation, and a supplementary point processing module (16) that processes the supplementation of the corresponding point of the digital map image according to the operator's manipulation. and a shooting module (17) that photographs a specific point according to the operator's operation, and a numerical coordinate comparison module (17) that checks and compares the numerical coordinates confirmed based on general RTK and the numerical coordinates confirmed based on network RTK, respectively ( 18), and a movement path display that displays and records the movement path of the mobile station 10, which is confirmed and displayed based on general RTK, and the movement path of the mobile station 10, which is confirmed and displayed based on network RTK, together in a digital map image. Contains module 19.

A more detailed description of the mobile station 10 will be provided according to the operating order of the system according to the present invention.

Subsequently, it further includes a distance information collector 40 that measures the moving distance of the mobile station 10 in real time and displays the distance value on the moving path output to the image input/output module 15.

The distance information collector 40 for this purpose is installed on the wheel configured in the mobile station 10 and includes a distance confirmation module 41 that counts the number of rotations of the wheel, a direction confirmation module 42 that measures the steering angle of the wheel, and It includes a distance value calculation module 43 that receives and calculates the rotation speed and steering angle to confirm the moving distance of the mobile station 10.

The distance information collector 40 is configured in the mobile station 10, and a detailed description thereof will be provided below.

1) First confirmation of numerical coordinates

The GNSS module 11 receives signals from artificial satellites and first confirms the current location of the mobile station 10.

As is well known, the GNSS module 11 receives signals from at least three artificial satellites, checks the strength of the signals, and calculates and confirms the primary numerical coordinates of the point where the mobile station 10 is currently located.

The GNSS module 11 according to the present invention is capable of correcting numerical coordinates based on DGNSS (Differential GNSS) like a general GNSS device, which will be explained again below.

2) VRS communication

The network communication module 12 transmits the primary numerical coordinates of the GNSS module 11 to the virtual reference point server 20.

The virtual reference point server 20 communicates in real time with the permanent observation station 30 installed at the reference point and receives the measured numerical coordinates confirmed by the permanent observation station 30 in real time.

As is well known, the permanent observation station 30 is installed at a known point, so the exact known coordinates of the current location are registered.

In this environment, the permanent observation station 30 can receive a signal from an artificial satellite, newly confirm the currently measured numerical coordinates, and calculate the error rate by comparing the newly confirmed numerical coordinates with known coordinates.

The virtual reference point server 20 calculates an error rate by comparing the measured numerical coordinates newly confirmed by the permanent observation station 30 with the known coordinates of the permanent observation station 30.

Meanwhile, the virtual reference point server 20 checks the error rate for three or more permanent observation stations 30 corresponding to the location of the mobile station 10 based on the first numerical coordinates received from the network communication module 12, Using this, the position correction value for the first numerical coordinate is completed and transmitted to the mobile station 10.

The position correction value may be a secondary numerical coordinate obtained by correcting the primary numerical coordinate, or may be a correction value that allows the GNSS module 11 to correct the primary numerical coordinate into secondary numerical coordinates based on RTK technology. .

3) Check the current location of the mobile station

The network communication module 12 receives the position correction value from the virtual reference point server 20, and the numerical coordinate correction module 13 receives the position correction value and corrects the primary numerical coordinates to secondary numerical coordinates.

The secondary numerical coordinates quantify the location of the mobile station 10 with high reliability, and allow the numerical coordinates to be confirmed without significant influence on the distance and communication environment between the permanent observation station 30 and the mobile station 10.

4) Output of digital map image corresponding to the current location of the mobile station

The image storage module 14 searches for a digital map image of the corresponding location based on the secondary numerical coordinates, and outputs the searched digital map image through the image input/output module 15.

Figure 3 is an image showing an example of a numerical map image output to an image input/output module according to an embodiment of the present invention, and Figure 4 is an image showing an example of a numerical map image output by an image input/output module according to an embodiment of the present invention. This is an image that shows the image being linked.

Figure 3 is a corresponding digital map image where secondary numerical coordinates are located, and displays a point where the mobile station 10 is located in the digital map image according to the secondary numerical coordinates.

Here, the 'blue dot' indicates the point where the mobile station 10 is located in the digital map image based on secondary numerical coordinates.

For reference, the 'blue dot' is displayed moving in real time according to the secondary numerical coordinates confirmed by the mobile station 10, and based on this, the worker of the mobile station 10 confirms his or her position in the digital map image.

5) On-site shooting

The operator of the mobile station 10 compares the location confirmed in the digital map image with the location confirmed in the field and determines the difference.

If the worker checks his/her location and the surrounding environment shown in the digital map image and determines that there is a difference, he/she photographs the scene using the photography module (17) and makes corrections to the digital map image using the image input/output module (15). Mark the target point (see 'red dot' in Figure 3).

For reference, the image input/output module 15 according to the present invention may be a touch screen type device so that the operator can immediately display the point to be corrected while viewing the digital map image.

Additionally, the photographing module 17 may be a digital camera that generates and inputs digital images in conjunction with the image input/output module 15.

Subsequently, when the shooting by the shooting module 17 is completed, as shown in FIG. 4 (an image showing the captured image being linked to the numerical map image output by the image input/output module according to the present invention), the shooting module ( 17) automatically links the captured image to a point in the digital map image indicated by the current location of the mobile station 10.

By linking in this way, workers can easily check the target and point of supplementation in the digital map image, as well as how to supplement the digital map image by referring to the captured image and the 'red dot'.

6) Processing of supplementary points

The supplementary point processing module 16 allows the operator to modify the digital map image according to the point where the 'red dot' is displayed.

To explain this in more detail, the supplementary point processing module 16 is produced as an application that can edit digital map images, and the operator uses the image input/output module 15 according to the menu presented by the supplemental point processing module 16. Manipulate to supplement the digital map image.

To explain as an example, as in the digital map image shown in Figure 3, the worker marks (red dot) a correction target point, which is a specific point that needs supplementation, while conducting a field investigation, and in the digital map image shown in Figure 4, Refer to the linked captured image and proceed to supplement the point to be corrected.

Figure 5 is an image showing how the supplementary point processing module corrects the ground image according to an embodiment of the present invention.

The operator checks the point to be corrected in the ground image output to the image input/output module 15 and compares it with the linked ground image (see FIG. 4).

Here, the corner located at the bottom of the point to be corrected has a somewhat gentler shape compared to the corner located at the top in the actual site, so taking this into consideration, the image shape of the corner is changed through the supplementary point processing module 16 as in the 'supplementary part'. Edit .

In addition, as can be seen in Figures 3 and 4, the previous digital map image shows the space between roads as an empty lot, but the actual site, which can be seen in the linked ground image, shows that the space is not an empty space but a large number of stores. You can see that it is composed.

In other words, the space is occupied by a ‘temporary building’. Accordingly, the supplementary point processing module 16 edits the image form of the corresponding space as a 'supplemental part' as shown in FIG. 5.

Ultimately, the supplementary point processing module 16 supplements the digital map image in the above-described process, and through this, a user visiting the site can accurately confirm his or her location using the modified digital map image.

Figure 6 is a block diagram showing the configuration of an image input/output module according to an embodiment of the present invention, and Figure 7 schematically explains how a user uses the digital map production system in the field according to an embodiment of the present invention. This is a drawing for

A user who visits the site compares the digital map image with the site while looking at the digital map image displayed on the screen of the image input/output module 15, which is one component of the system, and checks for errors in the digital map image.

However, the digital map image output through the image input/output module 15 is always output with north (N) facing the top of the screen and south (S) facing the bottom of the screen, regardless of the user's movement direction and gaze. .

In other words, even if the user moves toward the east, south, or west, the digital map image that can be used as a reference always faces the upper part of the screen, resulting in a difference between the digital map image and the scene.

In the end, the user has difficulty matching the digital map image with the site using only the digital map image output to the image input/output module 15, and because of this, it is not possible to easily determine whether there is an error in the digital map image for the site.

For this purpose, the image input/output module 15 according to the present invention retrieves and outputs the digital map image from the image storage module 14, confirms the user's operation, processes the corresponding operation, and determines the direction confirmed by the direction observation unit 15b. An input/output unit 15a adjusts the arrangement direction of the digital map image by checking the value and time value confirmed by the timer 15c, and detects the direction the screen of the input/output unit 15a faces based on north, south, east, west, and generates a direction value. It consists of a direction observation unit 15b, which starts measuring time when a change in the direction value is confirmed, and a timer 15c that generates a time value after a certain time has elapsed.

As shown in Figure 7 (a), the user places the image input/output module 15 in front of himself and moves north while viewing the digital map image displayed on the screen of the input/output unit 15a.

The direction observation unit 15b is equipped with a known electronic compass function and determines which direction the image input/output module 15 is facing based on the user as one of north, south, east and west, and generates the corresponding direction value to display the input/output unit 15a. Pass it to

Meanwhile, the timer 15c checks the direction value, measures the time from the point of change if there is a change in the direction value, and generates the corresponding time value after a certain period of time and transmits it to the input/output unit 15a. .

In an embodiment according to the present invention, when the user moves toward the north as shown in (a) of FIG. 7 and changes direction toward the east as shown in (b) of FIG. 7, the direction observation unit 15b changes the direction. Recognizing that it has changed from north to east, the corresponding direction value is generated and transmitted to the input/output unit 15a, and the timer 15c measures the time from this point.

Subsequently, when a certain time elapses, the timer 15c transmits the corresponding time value to the input/output unit 15a, and the input/output unit 15a generates the corresponding numerical map image as shown in (b) of FIG. 7. Make sure the output faces east.

In other words, when the user is facing north, the north side of the digital map image is toward the top of the screen based on the user's line of sight, and when the user is facing east, the east side of the digital map image is toward the top of the screen based on the user's line of sight. It is to be pointed towards.

For reference, the user can change direction at any time to check the site, but adjusting the arrangement of the digital map image output each time puts a strain on the system and causes confusion for the user, so maintain a stable output state of the digital map image. To achieve this, it is desirable to adjust the arrangement of the digital map image only when the direction is maintained for more than a certain period of time.

Ultimately, the user can navigate and move while looking at the digital map image displayed on the screen of the input/output unit 15a, and through this, the user can easily identify the terrain displayed on the digital map image by matching it with the site.

The GNSS module 11 of the mobile station 10 according to the present invention verifies the numerical coordinates (secondary numerical coordinates) of the mobile station based on network RTK, and also determines the numerical coordinates (tertiary numerical coordinates) of the mobile station based on general RTK. Check together.

Figure 8 is an image showing the location of the mobile station within a digital map image output by the mobile station according to an embodiment of the present invention.

The numerical coordinates confirmed in this way may differ depending on the communication environment of the location where the mobile station 10 is located, the distance between the permanent observation station 30 and the mobile station 10, etc., and the numerical coordinate comparison module 18 operates according to each of the above methods. The confirmed numerical coordinates are displayed as shown in (a) of FIG. 8.

Here, the first point indicated in green indicates the location of the mobile station 10 as a route according to network RTK-based numerical coordinates, and the second point indicated in purple indicates the location of the mobile station 10 according to general RTK-based numerical coordinates. It is displayed as a path.

In the end, the operator of the mobile station 10 checks the numerical coordinates based on general RTK and network RTK in the digital map image output to the image input/output module 15, and based on this, calculates the numerical coordinate system synthesized in the digital map image. You can proceed with modifications.

To explain this in more detail, based on the general RTK-based numerical coordinates and the network RTK-based numerical coordinates confirmed through the numerical coordinate comparison module 18, the image input/output module 15 determines the first point where the mobile station 10 is located. The meeting and the second point are displayed together in one digital map image, and the movement path display module 19 uses the displayed position of the mobile station 10 as the movement path as shown in (b) of FIG. 8. Display together.

Here, the first movement path shown in green represents the location of the mobile station 10 according to network RTK-based numerical coordinates, and the second movement path shown in purple indicates the location of the mobile station 10 according to general RTK-based numerical coordinates. The location is displayed as a path.

Looking at the movement routes, both routes are displayed accurately within the margin of error along 'Jongno 9-gil', which is the movement route of the mobile station 10.

However, at the intersection of 'Jongno 9-gil', an error occurs where the general RTK-based numerical coordinates (marked in black) deviate from the travel path.

In other words, when a worker is at the same field location, the first and second points (black indicated points) displayed on the digital map image are displayed with a difference greater than the specified range.

The numerical coordinate comparison module 18 compares the general RTK-based numerical coordinates and the network RTK-based numerical coordinates according to the reference value set as the designated range, and for the numerical coordinate point exceeding the designated range, the numerical coordinate is designated as a 'recheck point'. Categorize and save.

Therefore, when the operator searches for the 'reconfirmation point', the numerical coordinate comparison module 18 controls the image input/output module 15, and the image input/output module 15 controls the 'reconfirmation point' as shown in (b) of FIG. 8. ' Search for a digital map image of numerical coordinates and print it along with the movement route.

The worker visits the site and confirms the numerical coordinates for the 'reconfirmation point' identified in this way, supplements the terrain image of the digital map image based on the supplemented numerical coordinates, and then moves workers or general users according to the numerical coordinate confirmation. Ensure that the route is displayed accurately within the relevant travel route.

FIG. 9 is a diagram showing a mobile station and a distance information collector according to an embodiment of the present invention, and FIG. 10 is a plan view schematically illustrating the movement of a mobile station according to an embodiment of the present invention.

As described above, the distance information collector 40 includes a distance confirmation module 41, a direction confirmation module 42, and a distance value calculation module 43.

The mobile station 10 has a structure that allows the user to push and move it in the field. The distance information collector 40 includes a base portion 100, a front wheel 200 that is installed to be movable and rotatable about the steering axis 210 for steering, and a base portion. A distance confirmation module that counts the number of revolutions of the rear wheel 220 and the front wheel 200, which are installed in line with the front wheel 200 so that (100) moves, and transmits the corresponding count information to the distance value calculation module 43. (41), a direction confirmation module 42 that is disposed on the steering axis 210 and detects and measures the steering angle of the front wheel 200 that changes during movement and transmits it to the distance value calculation module 43, the base ( A coupling fastening part 300 coupled to the upper surface of the coupling part 300, a lifting control part 400 provided on one side of the coupling fastening part 300, and a tilting unit connected to the other side of the coupling fastening part 300 and the lifting adjusting part 400. It includes a movable control unit 500 that adjusts the distance and a mobile station 10 mounted on one side of the movable control unit 500.

At this time, the mobile station 10 takes the form of a two-wheeled vehicle, and for this purpose, the front wheels 200 and rear wheels 220 are arranged in a row.

Meanwhile, the front wheel 200 is installed on the base 100 so as to be rotatable for steering the mobile station 10.

To explain this in more detail, the front wheel 200 is rotatable around the steering shaft 210, allowing the user to physically adjust the moving direction of the mobile station 10, and when adjusting, the front wheel 200 ) rotates around the steering axis 210.

The distance confirmation module 41 is disposed on the rotation axis of the front wheel 200, counts the rotation speed of the front wheel 200, and transmits the rotation speed to the distance value calculation module 43.

The direction confirmation module 42 is disposed on the steering shaft 210 to detect the steering angle of the front wheel 200 that changes during movement, measures it, and transmits it to the distance calculation module 43.

The distance value calculation module 43 receives the rotation speed and steering angle information of the front wheel 200 transmitted from the distance confirmation module 41 and the direction confirmation module 42, respectively, and calculates the current moving distance of the mobile station 10 based on this. Measure the value.

To explain this further, the distance value calculation module 43 has information on the circumference of the front wheel 200, so it calculates the rotation speed and circumference to determine the distance of the mobile station 10 as shown in (a) of FIG. 10. Performs the first operation on the value 'd'.

Subsequently, the distance value calculation module 43 checks the steering angle information and, if a steering angle greater than the specified angle is transmitted during the specified time, stops calculating the previous distance value 'd' as shown in (b) of FIG. 10 and The calculation of 'd', which is the distance value for the corresponding direction, is started again.

The distance value calculated in this way is transmitted to the movement path display module 19, and the movement path display module 19 displays and links the distance value to the digital map image. Through this, the actual measured distance of the road can be accurately reflected in the digital map to complete a highly reliable digital map.

Figure 11 is a diagram schematically showing the configuration of a coupling part and a lifting control part according to an embodiment of the present invention, and Figure 12 is a perspective view showing the movable control part according to an embodiment of the present invention. 13 is a diagram showing the operation of the movable control unit according to an embodiment of the present invention.

The coupling portion 300 is coupled to the base portion 100, and is supported on the base portion 100 and is provided on the edge of the base body 310 and the base body 310 with a body groove on the bottom portion, and includes a plurality of A coupling flange 320 provided with a coupling hole 321, a base plate 330 disposed on the upper part of the base body 310 and spaced apart from the base body 310, and a movable control unit provided on the upper surface of the base plate 330. A guide rail 340 that guides the movement of the unit 500, a plurality of ball bodies 350 provided on the upper surface of the base body 310 and having support balls 351, and an upper part of the plurality of ball bodies 350 A plurality of elliptical bodies 360 are disposed and supported on the support ball 351, the upper part is coupled to the base plate 330, and the lower part is coupled to the elliptical body 360, and a plurality of grids support the base plate 330 The support 370, the lower part of which is coupled to the plurality of ball bodies 350 and the upper part of which is coupled to the plurality of elliptical bodies 360, includes a plurality of support lines 380 that support the plurality of elliptical bodies 360. .

In this embodiment, the coupling portion 300 can be stably fixed to the base portion 100 by coupling bolts, etc. to the base portion 100 through a plurality of coupling holes 321.

The guide rail 340 is provided in the longitudinal direction of the base plate 330 and can guide the movement of the movable control unit 500.

The support ball 351 may support the elliptical body 360 by contacting the groove 361 provided in the elliptical body 360. In this embodiment, the groove portion 361 is provided in a circular shape corresponding to the support ball 351 and can stably support the movement of the elliptical body 360.

The plurality of grid supports 370 can support the base plate 330 more sensitively by hingedly combining a plurality of bars in a zigzag shape.

The support line 380 is provided with a coil spring and can elastically support the elliptical body 360.

The elevation control unit 400 can adjust the inclination of the base plate 330 by raising and lowering the base plate 330.

In this embodiment, the lifting control unit 400 includes a first lifting cylinder 410, the lower part of which is hinged to the base body 310 and the upper part of which is hinged to the base plate 330 to raise and lower the base plate 330. The lower part is hinged to the base body 310, and the upper part is hinged to the base plate 330 to include a second lifting cylinder 420 that elevates the base plate 330.

In this embodiment, the first lifting cylinder 410 and the second lifting cylinder 420 may be arranged to cross each other.

The movable control unit 500 is connected to the coupling unit 300 and the elevation control unit 400 to support the mobile station 10 and to control the distance and inclination of the mobile station 10.

In this embodiment, the movable control unit 500 is connected to the LM guide 510 movably coupled to the guide rail 340, the support base 520 provided on the upper part of the LM guide 510, and the support base 520. A support cylinder 530 whose lower side is hinged, a cylinder connector 540 coupled to the upper side of the support cylinder 530, a connection piece 550 whose lower side is rotatably coupled to the cylinder connector 540, one side of which is a support base ( A support plate 560 that is hinged to the connection piece 520 and the other side is coupled to the other side of the connection piece 550 and rotates like the connection piece 550, and is provided on the support plate 560 to support one side of the mobile station 10. It includes a first support 570 and a second support 580 provided on the support plate 560 to be spaced apart from the first support 570 and supporting the other side of the mobile station 10.

The LM guide 510 can be moved in the longitudinal direction of the guide rail 340. As a result, the mobile station 10 supported on the first support 570 and the second support 580 can be moved along the longitudinal direction.

The left side of the support cylinder 530 may be provided to be accommodated in the receiving groove 521 provided in the support base 520. As a result, the support cylinder 530 is accommodated in the receiving groove 521 provided in the support base 520, and the support plate 560 can be arranged parallel to the support base 520 as shown in drawing (b). .

The cylinder connector 540 and the connecting piece 550 may be rotatably coupled to each other with a pin or shaft, and the rotated state may be designed to be maintained by mutual friction between the cylinder connector 540 and the connecting piece 550.

A plurality of coupling grooves 561 are spaced apart from each other on the upper surface of the support plate 560. In this embodiment, the positions of the first support 570 and the second support 580 are determined by coupling the first support 570 and the second support 580 to the selected coupling groove 561 among the plurality of coupling grooves 561. can be changed.

In this embodiment, the first support 570 is provided with a first coupling protrusion 571, and the second support 580 is provided with a second coupling protrusion 581, so that the first support 570 and the second support 580 are provided. Can be detachably fitted and coupled to a plurality of coupling grooves 561 by combining protrusions and grooves.

A variable pressure unit 600 is coupled to the base body 310 so as to be capable of being raised and lowered. The variable pressing unit 600 can pressurize the base body 310 to the base unit 100.

In this embodiment, the variable pressure unit 600 is a pressure body 610 disposed in the body groove of the base body 310 and has a semicircular shape, the lower part is connected to the pressure body 610, and the other side is connected to the base body 310. ) is screwed to the connection body 620, and is disposed on the upper part of the base body 310 and includes a rotating part 630 provided on the connection body 620 to rotate the connection body 620.

The curved area of the pressing body 610 may be disposed in the direction of the base 100. In this embodiment, the curved area of the pressing body 610 is in contact with the base 100 to support the coupling portion 300 more stably.

In addition, the variable pressing part 600 is provided to have an adjustable length, so that the height can be adjusted to match the base part 100.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is commonly known in the technical field to which the present invention pertains that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of.

10: Mobile station 20: Virtual reference point server 30: Permanent observation station
40: Distance information collector 100: Base 200: Front wheel
210: steering shaft 220: rear wheel 300: coupling part
310: Base body 320: Coupling flange 321: Coupling hole
330: Base plate 340: Guide rail 350: Ball body
351: Support ball 360: Oval body 361: Groove
370: Grid support 380: Support line 400: Elevation control unit
410: First elevating cylinder 420: Second elevating cylinder 500: Movable control unit
510: LM guide 520: Support base 521: Receiving groove
530: Support cylinder 540: Cylinder connector 550: Connection piece
560: Support plate 561: Coupling groove 570: First support
571: first coupling protrusion 580: second support 581: second coupling protrusion
600: Variable pressurizing part 610: Pressurizing body 620: Connecting body
630: Rotating part

Claims (1)

Multiple permanent observatories that communicate with satellites and check current numerical coordinates; A mobile station that communicates with satellites and corrects digital map images; A virtual reference point server that receives the current numerical coordinates confirmed by multiple permanent observation stations, generates a position correction value, and transmits it to the mobile station; and a distance information collector that measures the moving distance of the mobile station in real time and displays the distance value on the moving path; Including,
The mobile station is,
GNSS module that communicates with satellites in real time and checks current numerical coordinates; A network communication module that processes communication with a virtual reference point server; A numerical coordinate correction module that corrects the numerical coordinates confirmed by the GNSS module based on the position correction value received from the virtual reference point server; An image storage module that stores digital map images; An image input/output module that outputs a digital map image retrieved from an image storage module; A supplementary point processing module that processes supplementation for the corresponding point in the digital map image; A photography module that photographs a specific point; Numerical coordinate comparison module that checks and compares the numerical coordinates confirmed based on general RTK and the numerical coordinates confirmed based on network RTK, respectively; and a movement path display module that displays and records the movement path of the mobile station, which is confirmed and displayed based on general RTK, and the movement path of the mobile station, which is confirmed and displayed based on network RTK, together on a digital map image; Including,
The distance information collector,
basal part; A front wheel whose base is installed to be movable and rotatable about the steering axis for steering; Rear wheels installed in line with the front wheels so that the base moves; A distance confirmation module that counts the number of revolutions of the front wheels and transmits the corresponding count information to the distance value calculation module; A direction confirmation module that is placed on the steering axis and detects and measures the steering angle of the front wheel that changes during movement and transmits it to the distance calculation module; A coupling part coupled to the upper surface of the base; A lifting and lowering control unit provided on one side of the coupling portion; A movable control unit connected to the coupling part and the other side of the lifting control unit to control the inclination and distance; and a mobile station mounted on one side of the movable control unit; Includes,
The coupling part,
A base body supported on the foundation; A coupling flange provided at the edge of the base body and provided with a plurality of coupling holes; A base plate disposed on the upper part of the base body and spaced apart from the base body; A guide rail provided on the upper surface of the base plate to guide the movement of the movable control unit; A plurality of ball bodies provided on the upper surface of the base body and having support balls; A plurality of elliptical bodies disposed on top of the plurality of ball bodies and supported by support balls; A plurality of grid supports, one side of which is coupled to the base plate and the other side of which is coupled to the oval body to support the base plate; and a plurality of support lines, one side of which is coupled to a plurality of ball bodies and the other side of which is coupled to a plurality of oval bodies to support the plurality of oval bodies. Includes,
The lifting control unit,
A first lifting cylinder, one side of which is hinged to the base body and the other side of which is hinged to the base plate to elevate and lower the base plate; and a second elevating cylinder, one side of which is hinged to the base body and the other side of which is hinged to the base plate to elevate and lower the base plate. It includes, wherein the first elevating cylinder and the second elevating cylinder are provided to cross each other,
The movable control unit,
LM guide movably coupled to the guide rail; A support base provided on the upper part of the LM guide; A support cylinder whose one side is coupled to the support base; A cylinder connector coupled to the other side of the support cylinder; A connecting piece on one side of which is rotatably coupled to the cylinder connector; A support plate on one side of which is hinged to the support base and on the other side of which is coupled to the other side of the connecting piece and rotated like the connecting piece; A first support provided on the support plate to support one side of the mobile station; and a second support provided on the support plate to be spaced apart from the first support to support the other side of the mobile station. Including,
The support base is provided with a receiving groove, and when the mobile station is not supported, the support plate is accommodated in the receiving groove. The support plate is provided with a plurality of coupling grooves, and the first support and the second support are installed in the selected coupling groove among the plurality of coupling grooves. By combining the two supports, the positions of the first and second supports can be changed.
a variable pressing part that is coupled to the base body to be lifted and pressed to press the base body to the foundation; It further includes,
The variable pressure part,
A pressurizing body disposed in the body groove of the base body and having a semicircular shape; A connection body whose one side is provided on the pressurizing body and whose other side is screwed to the base body; and a rotating part disposed on the upper part of the base body and provided on the connection body to rotate the connection body. A digital map production system that can improve reliability by using field survey data according to topographical changes, characterized by including.

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