KR101840429B1 - Digital map accuracy enhancement system using field survey data - Google Patents

Abstract

The present invention relates to a system for improving accuracy of digital map using materials acquired from field research, and more specifically, to a system for improving accuracy of digital map using materials acquired from field research, which confirms numerical coordinates through a network RTK technology using VRS and a general RTK technology, respectively, in order to measure highly accurate numerical coordinates for occluded areas, and which displays confirmed numerical coordinates in a conventional numerical map image at the same time, and can track the uncertainty of the numeric map image for a particular location by grasping the difference between two types of numeric coordinates, thereby modifying and completing a highly reliable numerical map image without being limited to a particular type of numerical coordinate.

Description

[0001] The present invention relates to a digital map accuracy enhancement system using field survey data,

[0001] The present invention relates to a system for improving the accuracy of a digital map using field survey data in the field of digital map technology, and more particularly, to a network RTK (Virtual Reference Station) (Real Time Kinematic) technology and general RTK technology, and simultaneously displays the numerical coordinates in the existing numerical map image and grasps the difference between the numerical coordinates of the two methods to obtain the numerical map image And more particularly, to a system for improving digital map accuracy using on-site surveys capable of correcting and completing a high-reliability digital map image without being limited to specific numerical coordinates because uncertainty can be tracked.

As is well known, the numerical map is completed by collecting and combining various kinds of information such as aerial photographing information, gefightness measurement information, and geographical survey information.

In particular, the numerical map measures the actual numerical coordinates of the corresponding point in order to enable precise positioning at each point and reflects the numerical map.

In this process, the numerical coordinates (coordinates) of other neighboring regions in a region where the accuracy of numerical coordinates such as the geospatial information is relatively low (hereinafter referred to as the "occluded region") such as a distance from the urban center, the reference station, To check the numerical coordinates for the occluded area.

However, since the numerical coordinates directly confirmed in the field are applied to the digital map image which is the background of the digital map, the inaccurate numerical coordinates cause the inaccurate numerical map creation.

In order to solve these problems, a system and an inspection method for realistic orthoimage image accuracy using a digital map (Registration No. 10-1130284; Publication Date 2012, 3, 26;

The prior art is a technique that effectively inspects errors in comparison with a conventional digital map for a building that is out of the accuracy range set by the inspector, even if the building or the processed building is not realized in the sensed ortho image produced.

However, the prior art is a technique for evaluating and correcting a digital map image of a digital map, and since it is not a technique for correcting the numerical coordinate itself by confirming the inaccuracy with respect to the numerical coordinate, There has been a problem in that information of high reliability can not be provided.

Korea Patent Registration No. 10-1469077 (November 24, 2014) 'Digital Map System Using Field Survey Data'

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the prior art and has been made to solve the above problems. In order to measure a high-accuracy numerical coordinate for a closed region, a network RTK (Real Time Kinematic ) Technology and general RTK technology, and simultaneously displays the confirmed numerical coordinates in the existing digital map image, and grasps the difference between the two types of numerical coordinates to track the uncertainty of the digital map image for the specific location The present invention aims at providing a digital map accuracy enhancement system using field survey data which can correct and complete a digital map image with high reliability without being limited to a specific numerical coordinate system.

In order to achieve the above-mentioned object, the present invention provides a means for realizing the above-mentioned object, receiving real-time signals from three or more GPS satellites installed at a known point, reaffirming the measured numerical coordinates for the current position, A plurality of permanent stations (30) originating from the mobile station (10); Dimensional numerical coordinates received from the mobile station 10 by a network and a plurality of the normal stations 30 to search for three or more stationary stations 30 adjacent to the mobile station 10, A virtual reference point server 20 for calculating a position correction value for the first-order numerical coordinates based on a difference between measured numerical coordinates and numerical coordinates of a corresponding known point, and transmitting the positional correction value to the mobile station 10; A GPS module 11 for receiving a signal in real time from three or more GPS satellites to confirm the first order numerical coordinates and communicating directly with the continuous observation station 30 to confirm tertiary numerical coordinates by a general RTK method, And a network communication module (12) for processing communication with the virtual base point server (20), and a network communication module (12) for processing the first numerical coordinate confirmed by the GPS module (11) according to the position correction value received from the virtual reference point server A numerical coordinate correction module 13, an image storage module 14 for storing a digital map image, and an input / output unit 151 for outputting a digital map image are checked on the basis of the east, west, north, north, A timer 153 for generating a time value when a certain time elapses after the direction value change after confirming the direction value change of the azimuth observer 152 and the azimuth observer 152, Print a map image The current position of the mobile station 10 within the digital map image is identified based on the secondary numerical coordinates and displayed as the first point and the timer 153 receives the time map of the digital map image An image input / output module (15) having an input / output unit of a touch screen type that adjusts a placement direction and is driven according to an operation of an operator; A supplementary point processing module 16 for displaying a correction target point in the corresponding terrain image according to an operation of the operator and editing the image type of the correction target point ) And a current position of the mobile station (10) in the numerical map image based on the third order numerical coordinate, so that the second point If the difference between the first and second points displayed together with the numerical map image is identified as a reference value or more, the image is automatically classified as a re-confirmation point and stored, and the image input / output module 15 is controlled according to the operation for confirming the re- A numerical coordinate comparing module 18 for outputting a numerical map image classified as the reconfirmation point, and a numerical coordinate comparing module 18 for displaying the first moving path on which all of the first points are outputted on the numerical map image, A mobile station (10) having a travel path display module (19) for displaying a first travel route and a second travel route together on a numerical map image displayed on the first travel route; And a base 44 on which the base station 44 is mounted and which is rotatably installed around the steering shaft 45a for steering, A rear wheel 46 arranged in line with the front wheel 45 so as to move the front wheel 45 and a distance checking module 43 for counting the number of revolutions of the front wheel 45 and transmitting the count information to the distance value calculating module 43 A direction confirming module 42 for sensing and measuring the steering angle of the front wheel 45 disposed on the steering shaft 45a and generating a change during the movement and transmitting the measured value to the distance value calculating module 43, When the steering angle of the front wheel 45 is calculated by calculating the circumference and the rotation number information of the front wheel 45 and the steering angle is not less than the specified angle for the designated time, the calculation of the previous distance value is stopped, And the distance value is converted into a digital map Improved accuracy in numerical map system using a field survey data including a; a distance information collector 40 is provided with a distance value calculation module 43 for transmitting the movement route display module 19 to display the image;
The mobile station support plate 430 is further provided between the mobile station 10 and the base 44 to fix the mobile station 10. The mobile station support plate 430 is detachably coupled to the upper surface of the stationary plate 400, A plurality of bolt connecting grooves 310 are formed on a bottom surface of the net mounting groove 300;
The span net 210 is inserted into the net mounting groove 300 and the upper end of the sheet span 210 is partially exposed from the net mounting groove 300, A spring mounting hole 211 having a diameter larger than that of the bolt connecting groove 310 is formed at a position corresponding to the bolt connecting groove 310;
The fixed plate 400 is formed with an elongated bolt hole 420 through which a plurality of elongated bolts 500 to be bolted to the bolt connecting grooves 310 can pass, The bolt holes 420 and the coil springs 220 inserted in the spring mounting holes 211 are inserted into the bolt holes 420 and then are fastened to the bolt fastening grooves 310 to fasten the fastening plate 400, A screw thread is formed only in a part of the lower end of the span net 500, and the sheet span net 210 is configured to have elastic restoring force in the form of a hexagonal net having a plurality of vents;
The span net 210 is woven so that the rest of the span net 210 has a hexagonal honeycomb-like elastic restoring structure. The first spun yarn 212 constituting the upper layer and the second spun yarn 212 constituting the lower layer, A plurality of elastic yarns 214 are vertically connected between the first and second frame members 212 and 213 to elastically buffer the first and second frame members 212 and 213;
The first and second frame members 212 and 213 are made of polypropylene yarn having a denier of 60 filaments to 300 denier, and the elastic yarn 214 is connected to have a bowstring shape using PET mono yarns;
The non-slip sheet further comprises a water-soluble acrylic-modified urethane-alkyd resin (12.5% by weight) and a 1-chloro-2,3- 2.5 wt% of epoxypropane, 0.5 wt% of sericite, 3.5 wt% of methyltrimethoxysilane, 1.5 wt% of aluminum hydroxide powder, 2.5 wt% of carboxylated styrene-butadiene copolymer, The present invention provides a system for improving the digital map accuracy using field survey data, characterized in that it is formed of a synthetic resin material comprising 25 wt% of resin, 4.5 wt% of liquefied anhydrous ammonia and the remaining polyurethane resin.

According to the present invention, in order to measure the high-accuracy numerical coordinates of the occluded region, the numerical coordinates are confirmed by the network RTK (Real Time Kinematic) technology and the general RTK technology using the VRS (Virtual Reference Station) Can be displayed simultaneously in the existing digital map image, and the uncertainty of the digital map image can be tracked by grasping the difference between the numerical coordinates of the two methods. Therefore, the digital map image of high reliability It is possible to obtain an effect of correcting and completing it.

1 is a block diagram schematically illustrating a configuration of a system according to the present invention.
2 is a block diagram showing a detailed configuration of a mobile station constituting a system according to the present invention.
3 is an image showing an example of a digital map image output to the image input / output module of the system according to the present invention.
4 is an image showing a shot image linked to a digital map image output by the image input / output module according to the present invention.
5 is an image showing a correction of the ground image by the supplementary point processing module according to the present invention.
6 is a block diagram illustrating the configuration of an image input / output module according to the present invention.
7 is a schematic view showing a flat view of a user using a system according to the present invention in the field.
8 is an image showing the position of a mobile station in a digital map image output by the mobile station according to the present invention.
9 is a side view schematically showing another configuration of a mobile station according to the present invention.
10 is a plan view schematically showing a movement state of a mobile station according to the present invention.
11 and 12 are partial cross-sectional views illustrating an example of an improvement of the buffer structure of a mobile station constituting the system according to the present invention.
FIG. 13 is an enlarged view of the buffer member of FIG. 11; FIG.
FIG. 14 is an exemplary view showing the internal structure of the buffer member of FIG. 11. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Prior to the description of the specific construction, the present invention uses most of the structure of the registered patent No. 10-1469077. Therefore, the main constitutions described below are to be quoted as they are, and the characteristic configuration of the present invention will be described later.

First of all, to explain the VRS (Virtual Reference Station) surveying, the VRS positioning method uses the data of the remote observation station at a distance to simulate a virtual reference point assuming that there is a reference point near the mobile station. It is a technique to generate.

In a conventional DGPS (Differential Global Positioning System), when the distance of the reference station having the station is several hundred km or more, the accuracy is degraded due to the influence of the ionosphere. However, in the virtual reference point type DGPS, the accuracy of the numerical coordinates is maintained even when the distance is away from the observing station.

For reference, in order to perform a GPS (Global Positioning System) measurement with high precision, a reference station is already installed at a reference point which already knows coordinate values, and a mobile station must communicate with a reference station and a GPS satellite. . However, by using the VRS positioning method, it becomes unnecessary to observe the GPS in the reference station by using the observation data of the regular observation station installed in the existing reference station.

Therefore, the user can observe only at the unspecified point and download the correction value from the observation data of the continuous observation station, and the GPS measurement is possible even with one receiver.

In addition, since there is no need to operate several reference stations, work efficiency is improved, which is more efficient.

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

As illustrated in FIGS. 1 and 2, the system of the present invention confirms numerical coordinates based on VRS to compensate for errors in numerical coordinates linked to a digital map image, and also compensates for errors in a digital map image .

For this purpose, the system comprises a stationary station 30 for communicating with GPS satellites and confirming current numerical coordinates, a mobile station 10 communicating with a GPS satellite while the operator is carrying and correcting the digital map image according to the operation of the operator, And a virtual reference point server 20 for receiving the current numerical coordinates confirmed by the normal observation station 30, generating a position correction value, and transmitting the generated position correction value to the mobile station 10.

The constant observing station 30 is installed on the reference station, which is a known point, and is used as a reference for correcting the error of the current numerical coordinate determined from the GPS satellite.

The current numerical coordinates confirmed by the normal observation station 30 are transmitted to the ground reference point server 20 in real time.

For reference, 45 stations were installed in Korea (30 stations) and it is used as a reference point in various fields.

The virtual reference point server 20 is a system for confirming the numerical coordinates based on the network RTK (Real Time Kinematic) by the VRS. The virtual reference point server 20 is a system for establishing a network communication with the constant observation station 30, Receive in real time.

The numerical coordinates thus received are compared with the known point coordinates of the normal observation station 30, and the error rates of the numerical coordinates confirmed by the corresponding station 30 are obtained, and the position correction values are generated based on the error rates and transmitted to the mobile station 10 .

The mobile station 10 confirms the numerical coordinates in real time while the worker visiting the site is carrying it, and outputs the numerical map image of the site based on the numerical coordinates so that the operator can directly confirm the error with respect to the digital map image, To make up for the errors found, it is possible to supplement the digital map images in real time.

To this end, the mobile station 10 includes a GPS module 11 for communicating with GPS satellites in real time and confirming current numerical coordinates, a network communication module 12 for processing communication with the virtual reference point server 20, A numerical coordinate correction module 13 for correcting numerical coordinates confirmed by the GPS module 11 based on the position correction value received from the image storage module 20, an image storage module 14 for storing a digital map image, Output module 15 for outputting the digital map image retrieved from the digital map 14 and driving according to the operation of the operator, a supplementary point processing module 16 for processing the complement of the corresponding point of the digital map image according to the operation of the operator ), A photographing module (17) for photographing a specific point in accordance with the operation of the operator, and a numerical coordinate confirmed based on the numerical coordinates and the network RTK, which are confirmed based on the general RTK, A numerical coordinate comparison module 18, and a movement route of the mobile station 10, which is confirmed based on the movement route of the mobile station 10 and the network RTK, which are confirmed based on the general RTK, And a route display module 19 for recording the route.

A more detailed description of the mobile station 10 will be described in more detail in accordance with the driving sequence of the system according to the present invention.

The mobile terminal 10 further includes a distance information collector 40 for measuring the moving distance of the mobile station 10 in real time and displaying the distance value on the moving path output to the image input / output module 15.

The distance information collector 40 for this purpose includes a distance checking module 41 installed on a wheel of the mobile station 10 for counting the number of revolutions of the wheel, a direction checking module 42 for measuring the steering angle of the wheel, And a distance value calculation module 43 for receiving and calculating the number of revolutions and the 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 made below.

1) Check the numerical coordinates first

The GPS module 11 receives the signal of the GPS satellite and firstly confirms the current position of the mobile station 10.

As is well known, the GPS module 11 receives a signal from at least three GPS satellites and confirms the strength of the signal to check the first order numerical coordinates of the point where the mobile station 10 is located.

The GPS module 11 according to the present invention can correct for the numerical coordinates based on DGPS (Differential GPS) like a general GPS device, which will be described below.

2) VRS communication

The network communication module 12 transmits the first order numerical coordinates of the GPS module 11 to the virtual reference point server 20.

The virtual reference point server 20 receives measured numerical coordinates in real time while communicating with the normal observation station 30 installed at the reference point in real time while checking the normal observation station 30.

As is well known, since the constant observing station 30 is installed at a known point, accurate known coordinates for the current position are registered.

In this environment, the continuous observing station 30 receives a signal from the GPS satellite, newly confirms the measured measured numerical coordinates, and compares the newly measured measured numerical coordinates with the known coordinates to calculate the error rate.

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

On the other hand, the virtual reference point server 20 confirms the error rates of the three or more regular stations 30 corresponding to the position of the mobile station 10 based on the first-order numerical coordinates received from the network communication module 12, After completing the position correction value for the first-order numerical coordinate using this, it is transmitted to the mobile station 10.

The position correction value may be a second-order numerical coordinate obtained by correcting the first-order numerical coordinate or a correction value that allows the GPS module 11 to correct the first-order numerical coordinate to the second-order numerical coordinate based on the RTK technique .

3) Checking the current position 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 first order numerical coordinate to the second order numerical coordinate.

The second order numerical coordinates are obtained by digitizing the position of the mobile station 10 with high reliability and allow numerical coordinates to be confirmed without greatly affecting the distance between the station 30 and the mobile station 10 and the communication environment.

4) Output a numeric map image corresponding to the current position of the mobile station

The image storage module 14 searches the digital map image at the corresponding position based on the secondary numerical coordinates and outputs the retrieved digital map image through the image input / output module 15.

Fig. 3 (an example of an image of a digital map image output to the image input / output module of the system according to the present invention) is a corresponding numerical map image in which a quadratic numerical coordinate is located, Displays the location in the image.

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

For reference, the 'blue dot' is displayed in real time in accordance with the second-order numerical coordinate determined by the mobile station 10, and the operator of the mobile station 10 confirms its position in the digital map image.

5) Field shooting

The operator of the mobile station 10 compares the position confirmed in the digital map image with the position confirmed in the field to determine the difference.

When the operator confirms his or her own position and the surrounding environment displayed on the digital map image and judges that there is a difference, the user takes a picture of the scene using the photographing module 17 and corrects the digital map image using the image input / output module 15 And displays the target point (refer to 'red dot' in FIG. 3).

For reference, the image input / output module 15 according to the present invention can be applied to a touch screen device so that an operator can directly display a correction target point while viewing a digital map image.

The photographing module 17 may be a digital camera that generates and inputs a digital image in cooperation with the image input / output module 15.

Subsequently, when the photographing by the photographing module 17 is completed, as shown in Fig. 4 (an image showing a photographing image linked to the digital map image outputted by the image input / output module according to the present invention) 17 automatically links the shot image to one point of the digital map image displayed at the current position of the mobile station 10. [

With this link, the operator can easily see how to supplement the digital map image by referring to the photographed image and the 'red dot', as well as the complementary object and point confirmation in the digital map image.

6) Handling of supplementary points

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

The supplementary point processing module 16 is constructed as an application capable of editing a digital map image and the operator inputs the image input and output module 15 according to the menu presented by the supplementary point processing module 16, To complement the corresponding digital map image.

For example, as shown in the numerical map image shown in FIG. 3, the operator performs display (red dot) on a correction target point, which is a specific point that needs to be supplemented, And then proceeds to supplement the correction target point by referring to the linked image.

5 is a view showing a correction of the ground image by the correction point processing module according to the present invention. The operator checks the correction target point in the ground image outputted to the image input / output module 15, And compared with a ground image (see FIG. 4).

Here, since the corner located below the correction target point is somewhat gentler than the corner located at the upper side in the actual field, the image of the corner is corrected through the correction point processing module 16 like the ' .

Also, as can be seen from Figs. 3 and 4, in the previous numerical map image, the space between the roads is displayed as a vacant space, and the actual site that can be confirmed from the linked ground image is a space As shown in FIG.

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

As a result, the supplementary point processing module 16 complements the digital map image in the above-described process, and the user visiting the site can accurately confirm his / her own position using the corrected digital map image.

FIG. 6 is a block diagram showing the configuration of an image input / output module according to the present invention, and FIG. 7 is a schematic view illustrating a plane view of a user using a system in the field.

The user visiting the site compares the digital map image with the scene while checking the digital map image outputted on the screen of the image input / output module 15, which is a constitution of the system, and checks whether the digital map image is erroneous.

The digital map image outputted through the image input / output module 15 is always output such that the north (N) is directed to the upper side of the screen and the south (S) is directed to the lower side of the screen irrespective of the moving direction and the sight line of the user .

That is, even if the user moves toward the east, south, or west, the digital map image always refers to the upper side of the screen, so that the difference between the digital map image and the site occurs.

As a result, the user has difficulty in matching the scene with the digital map image only by the digital map image outputted to the image input / output module 15, so that it is not easy to grasp whether the digital map image on the scene is in error.

To this end, the image input / output module 15 according to the present invention searches and outputs the digital map image from the image storage module 14, processes the corresponding operation contents by confirming the operation of the user, Output unit 151 for detecting the direction of the screen of the input / output unit 151 on the basis of the north, south, east, and west directions, and generating a direction value And a timer 153 for generating a time value when a predetermined time elapses after starting the time measurement if a change in the direction value is confirmed.

As shown in FIG. 7 (a), the user places the image input / output module 15 in front of him / her and moves to the north while viewing the digital map image outputted on the screen of the input / output unit 15.

The azimuth observer 152 has a known electronic compass function and identifies the direction of the image input / output module 15 based on the user as one of north, south, south, north, south, .

On the other hand, the timer 153 checks the azimuth value, measures the time from the point of change if there is a change in the azimuth value, and transmits the generated time value to the input / output unit 151 after a predetermined time elapses .

In the embodiment according to the present invention, when the user moves toward the north as shown in FIG. 7 (a) and changes its direction to the east as shown in FIG. 7 (b), the azimuth observer 152 And outputs the azimuth value to the input / output unit 15. The timer 153 measures the time from this time.

When the predetermined time elapses, the timer 153 transmits the time value to the input / output unit 151, and the input / output unit 151 outputs the corresponding numerical value map image as shown in FIG. 7 (b) To be directed toward the east.

That is, when the user faces north, the north of the digital map image is oriented toward the screen based on the user's gaze, and when the user is facing east, the east of the digital map image is located on the top of the screen .

As a reference, the user can change direction at any time to check the field. If the arrangement of the digital map image to be outputted is adjusted, the system will be overloaded and the user will be confused, so that the stable output state of the digital map image It is desirable to adjust the arrangement of the digital map images only when the direction is maintained for a certain period of time.

As a result, the user can grasp the direction of the digital map image displayed on the screen of the input / output unit 151 and can easily grasp the terrain displayed on the digital map image by matching with the scene.

The GPS module 11 of the mobile station 10 according to the present invention confirms the numerical coordinates (second-order numerical coordinates) of the mobile station based on the network RTK, and also calculates the numerical coordinates (third- Together.

The numerical coordinates thus confirmed may differ depending on the communication environment of the place where the mobile station 10 is located, the distance between the station 30 and the mobile station 10, and the numerical coordinate comparison module 18 The identified numerical coordinates are displayed as shown in Fig. 8 (a) of Fig. 8 (an image showing the position of the mobile station in the digital map image outputted by the mobile station according to the present invention).

Here, the first point indicated in green is the path of the position of the mobile station 10 according to the network RTK-based numerical coordinate, and the second point indicated in purple is the position of the mobile station 10 according to the general RTK- Path.

As a result, the operator of the mobile station 10 checks the numerical coordinates based on the general RTK and the network RTK in the digital map image outputted to the image input / output module 15, and based on the numerical coordinates, You can proceed with the correction.

Based on the general RTK-based numerical coordinates and the network RTK-based numeric coordinates confirmed through the numerical coordinate comparing module 18, the image input / output module 15 determines whether the mobile station 10 is located at the first location And displays the meeting and the meeting of the second point together in one numerical map image. The moving route display module 19 displays the position of the mobile station 10 displayed as the moving route, as shown in Fig. 8 (b) Mark as follows.

Here, the first movement path indicated in green is a path of the position of the mobile station 10 in accordance with the network RTK-based numerical coordinate, and the second movement path indicated in purple is a path of the mobile station 10 in accordance with the general RTK- The location is indicated by a path.

In general, both paths are accurately displayed within an error range along 'Jongno 9-way', which is the movement path of the mobile station 10.

However, at the intersection of 'Jongno 9-way', an error occurs that the general RTK-based numerical coordinate (black point) deviates from the travel route.

That is, when the operator is in the same field position, the first and second points (black display points) displayed on the digital map image are displayed with a difference of more than the designated range.

The numerical coordinate comparing module 18 compares the general RTK-based numerical coordinate and the network RTK-based numeric coordinate according to the reference value set in the specified range, and for the numerical coordinate point exceeding the specified range, the corresponding numerical coordinate is referred to as a ' .

Accordingly, when the worker searches for a 'reaffirmation point', the numerical coordinate comparison module 18 controls the image input / output module 15, and the image input / output module 15 ' 'And outputs it along with the movement path.

The operator confirms the "reaffirmation point", confirms the site visit and numerical coordinates, complements the topographic image of the digital map image based on the supplemented numerical coordinates, and then moves the worker or the general user So that the route can be accurately displayed within the travel route.

FIG. 9 is a side view schematically showing another configuration of a mobile station according to the present invention, and FIG. 10 is a plan view schematically showing the movement of a mobile station according to the present invention.

As described above, the distance information collector 40 includes a distance checking module 41, a direction checking module 42, and a distance calculating module 43.

The mobile station 10 has a structure in which a user pushes and moves in the field. For this purpose, a front wheel 45 and a rear wheel 46 are formed on a base 44 on which the mobile station 10 is mounted.

At this time, the mobile station 10 is in the form of a two-wheeled vehicle, in which the front wheel 45 and the rear wheel 46 are arranged in a line.

On the other hand, the front wheel 45 is installed on the base 44 so as to be rotatable for steering the mobile station 10. [

More specifically, the front wheel 45 is rotatable about the steering shaft 45a so that the user can physically adjust the moving direction of the mobile station 10, and when the front wheels 45 Rotates around the steering shaft 45a.

The distance checking module 41 is disposed on the rotational axis of the front wheel 45 to count the number of rotations of the front wheel 45 and transmits the number of rotations to the distance value calculating module 43.

The direction confirming module 42 senses the steering angle of the front wheel 45, which is disposed on the steering shaft 45a and changes during the movement, measures the steering angle and transmits it to the distance value calculating module 43. [

The distance value calculation module 43 receives the rotation number and the steering angle information of the front wheel 45 transmitted by the distance confirmation module 41 and the direction confirmation module 42 and calculates the distance Measure the value.

The distance value calculation module 43 calculates the circumference of the front wheel 45 by calculating the number of revolutions and the circumference of the front wheel 45 so as to calculate the distance of the mobile station 10 as shown in FIG. Quot; d "

Next, when the steering angle is not less than the predetermined angle for a predetermined time, the distance value calculation module 43 stops the calculation of the immediately preceding distance value 'd' as shown in the diagram of FIG. 10 (b) The 'd' operation, which is the distance value for that direction, is restarted.

The calculated distance value is transmitted to the travel route display module 19, and the travel route display module 19 displays and links the distance value to the digital map image.

Through this, it is possible to complete the digital map with high reliability by accurately reflecting the measured distance of the road on the digital map.

In addition, in the present invention, since the mobile station 10 is simply placed on the base 44, that is, it is stationary, the stability and impact resistance are very weak, which results in a measurement failure if an external impact is applied during the measurement.

In order to improve this, in the present invention, a buffer member 200 is further provided between the mobile station 10 and the base 44, as shown in Figs. 11 to 14.

The buffer member 200 includes a sheet-type span net 210 and a coil spring 220.

At this time, the sheet-type span net 210 is formed in a hexagonal net shape having a plurality of vents and a spring mounting hole 211 penetrating in the thickness direction in the vicinity of the four corners, .

In particular, as shown in FIG. 14, the sheet-type span net 210 is manufactured to have a hexagonal honeycomb-like elastic restoration structure except for the spring installation hole 211.

At this time, the shape of the hexagonal honeycomb of the sheet span net 210 is composed of a combination of polypropylene and PET (polyethylene terephthalate) in order to sufficiently retain the elastic restoring force.

For example, the first and second frame yarns 212 and 213 constituting the upper layer and the lower layer are formed in a hexagonal honeycomb shape, and a plurality of elastic yarns 214 To elastically dampen the space between the first and second template fibers 212 and 213.

In this case, the first and second molds 212 and 213 are preferably made of a coarse yarn, such as a yarn of 60 filaments -300 denier.

This is to keep the frame, and if a thinner thread is used, the shape will collapse and it will be difficult to maintain the shape of the sheet span net 210.

Particularly, it is preferable to use a polypropylene yarn formed by spinning a polypropylene resin, and the elastic yarn 214 is made of PET yarn, and the monofilament yarn 212 or 213 is made of PET mono yarn. desirable.

The elastic yarn 214 is a filament thinner than the first and second webs 212 and 213 so as to constrain the first and second webs 212 and 213 and to maintain a gap therebetween, , That is, it should be bent in a curved shape which is distributed to one side.

On the other hand, on the upper surface of the base 44, there is formed a netting groove 300 recessed in a corresponding shape so that the sheet span net 210 can be partially inserted, Bolt coupling grooves 310 are further formed at positions corresponding to the plurality of spring mounting holes 211 formed in the span net 210 of the sheet-

In this case, the diameter of the bolt connecting groove 310 should be smaller than the diameter of the spring mounting hole 211.

In addition, the thickness of the sheet span net 210 should be 2-2.5 times greater than the depth of the net mounting groove 300 in order to provide a sufficient and stable elastic restoring force of the sheet span net 210.

As a result, the protruding portion can be pressed, thereby providing a sufficient and stable elastic restoring force.

A fixing plate 400 is mounted on an upper surface of the sheet span 210 and a fixing protrusion 410 protrudes from the upper surface of the fixing plate 400.

The protrusion coupling groove 440 is screwed to the coupling protrusion 410 and the protrusion coupling groove 440 is formed at the center of the lower end surface of the mobile station support plate 430.

In addition, on the upper surface of the mobile station support plate 430, the mobile station 10 is fixed by various known methods.

An elongated bolt hole 420 through which a plurality of elongated bolts 500 to be bolted to the bolt fastening groove 310 can pass through is formed in the vicinity of the four corners of the fixing plate 400.

At this time, the long bolt hole 420 also has a diameter smaller than that of the spring mounting hole 211.

Therefore, since the coil spring 220 is constrained to the long bolt 500, the fixing plate 400 can be elastically buffered only in the vertical direction, .

However, since the coil spring 220 itself has a large flow width due to the up-and-down cushioning, the present invention is combined with the sheet-type span net 210 in order to faithfully perform the buffering function and significantly reduce the vertical flow width.

In the present invention having such a configuration, first, the sheet-type span net 210 is seated in the net mounting groove 300.

Then, a plurality of coil springs 220 are inserted into the spring mounting holes 211 of the sheet-type span net 210.

Then, the lower end surface of the fixing plate 400 is grounded on the upper surface of the sheet-type span net 210 while the mobile station supporting plate 430 is fastened to the fixing plate 400.

Since the contact area between the lower surface of the fixing plate 400 and the sheet span 210 is small, a repulsive flow may occur due to the slip. Therefore, in order to prevent this, A non-slip sheet (not shown) having a thickness of 1 mm may be further provided.

In this case, the non-slip sheet comprises 12.5% by weight of a water-soluble acrylic-modified urethane-alkyd resin, 2.5% by weight of 1-chloro-2,3-epoxypropane, 0.5% by weight of sericite, 3.5% by weight of methyltrimethoxysilane, And 1.5 wt% of aluminum hydroxide powder, 2.5 wt% of a carboxylated styrene-butadiene copolymer, 25 wt% of a silicone resin, 4.5 wt% of liquefied anhydrous ammonia, and the remaining polyurethane resin .

Here, the water-soluble acrylic-modified urethane-alkyd resin is added in order to impart adhesiveness to enhance adhesiveness to the material and increase non-slip property.

In addition, the liquid in which the polyurethane resin is made to be water-soluble by tecyl ether is added in order to increase the waterproofness, chemical resistance and mechanical strength of the coating film, promote the film formation, lower the heat conduction efficiency and ensure the uniformity of the coating film .

And, 1-chloro-2,3-epoxypropane is added as a chlorine-based substance having high reactivity for stabilizing the reaction of the composition, and sericite is added to improve mechanical strength, and methyltrimethoxysilane is added by hydrophobic It is added to enhance durability by strengthening the bonding force between emulsified materials.

In addition, the aluminum hydroxide powder serves to neutralize the acid, thereby enhancing the non-slip property by improving the adhesion, and the carboxylated styrene-butadiene copolymer is excellent in adhesion and stain resistance, Resistance, and crack resistance.

Further, the silicone resin is a polymer mainly composed of silicon and oxygen bonds, and is added to enhance the binding force between the constituent components by increasing the adhesive force, and liquefied anhydrous ammonia is added to enhance the waterproof property and the adhesion property, and the polyurethane resin elastic buffer .

Since the long bolt 500 is threaded only in the lower end portion of the long bolt 500, the bolt hole 420 and the coil spring 220 penetrate the inner diameter of the long bolt hole 420 and the bolt fastening groove 310 So that the fixing plate 400 can be fixed by the elastic buffering method.

In this case, since the basic elastic buffering force of the coil spring 220 is applied to the long bolt 500, it acts only in the vertical direction. At this time, the sheet span net 210 forms a hexagonally separated elastic structure So that the mobile station 10 can be provided with an elastic buffering force against the external force very stably without abrupt flow.

In addition, since the mobile station support plate 430 is used externally, 2.5% by weight of a water-soluble acrylic-modified urethane-alkyd resin and 5% by weight of a solution of a polyurethane resin in which the polyurethane resin is tethered with terephthalate to enhance waterproofness, antifouling property, heat resistance and durability 2.5 wt% of 1-chloro-2,3-epoxypropane, 4.5 wt% of methyltrimethoxysilane, 5.5 wt% of polyvinyl alcohol, 3.5 wt% of silicone resin, and triethanolamine ), 2.5 wt% of petrolatum, 1.5 wt% of diaryl phthalate, 1.5 wt% of polyisocyanate, 3.5 wt% of cresyl glycidether, 1.5 wt% of liquefied anhydrous ammonia, and the remaining polycarbonate It is preferable to be molded into a synthetic resin material made of a resin.

Here, the water-soluble acrylic-modified urethane-alkyd resin is added in order to impart adhesiveness to enhance adhesion with a material and to exhibit super water repellency.

In addition, the liquid in which the polyurethane resin is made to be water-soluble by tecyl ether is added in order to increase the waterproofness, chemical resistance and mechanical strength of the coating film, promote the film formation, lower the heat conduction efficiency and ensure the uniformity of the coating film .

The 1-chloro-2,3-epoxypropane is added as a chlorine-based material having a high reactivity for stabilizing the reaction of the composition. The methyltrimethoxysilane is hydrophobic to enhance the bonding force between the emulsified materials to increase durability Lt; / RTI >

In addition, polyvinyl alcohol is added to enhance the acid resistance and chemical resistance, so as to increase the bonding force between components. The silicone resin is a polymer mainly composed of silicon and oxygen bonds, and enhances the bonding force to strengthen the binding force between the constituents. And triethanolamine is a weakly alkaline buffer added to control acidity. Petrolatum is an ointment-like material composed mainly of an amorphous solid hydrocarbon and is added to enhance the formation due to its waterproof function, Phthalates are added to improve adhesion and toughness to increase heat resistance and stability including adhesion stability, polyisocyanates are added to promote curing, and cresylglycidether enhances binding force between components to cause cracking, fracture Or local damage, and the amount of the liquid Anhydrous ammonia is added to enhance water resistance and adhesion, and polycarbonate resin is a base resin.

10: mobile station 20: virtual reference point server
30: constant observation station 40: distance information collector

Claims (1)

A plurality of stationary observation stations installed at a known point and receiving signals from three or more GPS satellites in real time to reconfirm the measured numerical coordinates for the current position and transmit the measured numerical coordinates to the virtual reference point server 20 and the mobile station 10, (30); Dimensional numerical coordinates received from the mobile station 10 by a network and a plurality of the normal stations 30 to search for three or more stationary stations 30 adjacent to the mobile station 10, A virtual reference point server 20 for calculating a position correction value for the first-order numerical coordinates based on a difference between measured numerical coordinates and numerical coordinates of a corresponding known point, and transmitting the positional correction value to the mobile station 10; A GPS module 11 for receiving a signal in real time from three or more GPS satellites to confirm the first order numerical coordinates and communicating directly with the continuous observation station 30 to confirm tertiary numerical coordinates by a general RTK method, And a network communication module (12) for processing communication with the virtual base point server (20), and a network communication module (12) for processing the first numerical coordinate confirmed by the GPS module (11) according to the position correction value received from the virtual reference point server A numerical coordinate correction module 13, an image storage module 14 for storing a digital map image, and an input / output unit 151 for outputting a digital map image are checked on the basis of the east, west, north, north, A timer 153 for generating a time value when a certain time elapses after the direction value change after confirming the direction value change of the azimuth observer 152 and the azimuth observer 152, Print a map image The current position of the mobile station 10 within the digital map image is identified based on the secondary numerical coordinates and displayed as the first point and the timer 153 receives the time map of the digital map image An image input / output module (15) having an input / output unit of a touch screen type that adjusts a placement direction and is driven according to an operation of an operator; A supplementary point processing module 16 for displaying a correction target point in the corresponding terrain image according to an operation of the operator and editing the image type of the correction target point ) And a current position of the mobile station (10) in the numerical map image based on the third order numerical coordinate, so that the second point If the difference between the first and second points displayed together with the numerical map image is identified as a reference value or more, the image is automatically classified as a re-confirmation point and stored, and the image input / output module 15 is controlled according to the operation for confirming the re- A numerical coordinate comparing module 18 for outputting a numerical map image classified as the reconfirmation point, and a numerical coordinate comparing module 18 for displaying the first moving path on which all of the first points are outputted on the numerical map image, A mobile station (10) having a travel path display module (19) for displaying a first travel route and a second travel route together on a numerical map image displayed on the first travel route; And a base 44 on which the base station 44 is mounted and which is rotatably installed around the steering shaft 45a for steering, A rear wheel 46 arranged in line with the front wheel 45 so as to move the front wheel 45 and a distance checking module 43 for counting the number of revolutions of the front wheel 45 and transmitting the count information to the distance value calculating module 43 A direction confirming module 42 for sensing and measuring the steering angle of the front wheel 45 disposed on the steering shaft 45a and generating a change during the movement and transmitting the measured value to the distance value calculating module 43, When the steering angle of the front wheel 45 is calculated by calculating the circumference and the rotation number information of the front wheel 45 and the steering angle is not less than the specified angle for the designated time, the calculation of the previous distance value is stopped, And the distance value is converted into a digital map Improved accuracy in numerical map system using a field survey data including a; a distance information collector 40 is provided with a distance value calculation module 43 for transmitting the movement route display module 19 to display the image;
The mobile station support plate 430 is further provided between the mobile station 10 and the base 44 to fix the mobile station 10. The mobile station support plate 430 is detachably coupled to the upper surface of the stationary plate 400, A plurality of bolt connecting grooves 310 are formed on a bottom surface of the net mounting groove 300;
The span net 210 is inserted into the net mounting groove 300 and the upper end of the sheet span 210 is partially exposed from the net mounting groove 300, A spring mounting hole 211 having a diameter larger than that of the bolt connecting groove 310 is formed at a position corresponding to the bolt connecting groove 310;
The fixed plate 400 is formed with an elongated bolt hole 420 through which a plurality of elongated bolts 500 to be bolted to the bolt connecting grooves 310 can pass, The bolt holes 420 and the coil springs 220 inserted in the spring mounting holes 211 are inserted into the bolt holes 420 and then are fastened to the bolt fastening grooves 310 to fasten the fastening plate 400, A screw thread is formed only in a part of the lower end of the span net 500, and the sheet span net 210 is configured to have elastic restoring force in the form of a hexagonal net having a plurality of vents;
The span net 210 is woven so that the rest of the span net 210 has a hexagonal honeycomb-like elastic restoring structure. The first spun yarn 212 constituting the upper layer and the second spun yarn 212 constituting the lower layer, A plurality of elastic yarns 214 are vertically connected between the first and second frame members 212 and 213 to elastically buffer the first and second frame members 212 and 213;
The first and second frame members 212 and 213 are made of polypropylene yarn having a denier of 60 filaments to 300 denier, and the elastic yarn 214 is connected to have a bowstring shape using PET mono yarns;
The non-slip sheet further comprises a water-soluble acrylic-modified urethane-alkyd resin (12.5% by weight) and a 1-chloro-2,3- 2.5 wt% of epoxypropane, 0.5 wt% of sericite, 3.5 wt% of methyltrimethoxysilane, 1.5 wt% of aluminum hydroxide powder, 2.5 wt% of carboxylated styrene-butadiene copolymer, Wherein the resin is molded from a synthetic resin material comprising 25 wt% of resin, 4.5 wt% of liquefied anhydrous ammonia, and the rest of the polyurethane resin.

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