KR102427816B1 - Road map construction system for surveying road boundary by mobile mapping system - Google Patents

Abstract

The present invention relates to a road map construction system, more specifically, comprising: a mobile mapping system in which a GPS receiver and a camera module are installed and which obtains a coordinate value of a road boundary by surveying using the GPS receiver; and a road map module which corrects the obtained coordinate value to manufacture a road map. The road map construction system for surveying the road boundary through the mobile mapping system can systematically record the road boundaries and intersections that are easy to lose precision in the road map.

Description

A road map construction system that can survey road boundaries through a mobile mapping system

The present invention relates to a road map construction system, and more particularly, to a road map construction system capable of surveying road boundaries through a mobile mapping system.

In the conventional spatial modeling method, it is common to use data constructed manually through field surveys. This method has disadvantages in that not only labor costs are excessive, but also errors in geographic information occur frequently due to manual work, and it is difficult to correct or update.

Recently, in order to solve this problem, geographic information data on buildings and road facilities are being constructed using surveying equipment such as a mobile mapping system (MMS).

The mobile mapping system installs a camera or lidar and precise GNSS/INS on a moving object such as a vehicle to calculate accurate location information and posture information about the photographing sensor while the work is in progress, and uses this to acquire it from the sensor. It is a high-precision 3D geographic information acquisition equipment that calculates the actual position of the laser point data and image object.

Such a mobile mapping system is in the spotlight as a means to quickly secure the up-to-dateness of spatial information. In particular, as the need for precision maps of roads and surrounding areas increases for ADAS (Advanced Driver Assistance System) and autonomous vehicles, Demand is growing.

Maps are difficult to contain frequently changing content, which limits their use, and suggests an effective use plan for collecting, processing, and analyzing data using a computer. GIS has come to the fore.

However, since the conventional road map construction system is mainly performed only in two dimensions, a topographic map including three-dimensional coordinate values (x, y, z) is required for various purposes.

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

The present invention is to solve the problems of the prior art described above, and a road map construction system capable of surveying a road boundary line capable of systematically recording road boundary lines and intersections, which are prone to low precision on a road map, through a mobile mapping system. Its purpose is to provide

Another object of the present invention is to provide a road map construction system capable of surveying a road boundary line capable of showing a road boundary line with more precision and less error through a mobile mapping system by correcting an error of a coordinate value.

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 will be clearly understood by those of ordinary skill in the art from the description of the present invention. .

The configuration of the present invention for achieving the above object is a mobile mapping system in which a GPS receiver and a camera module are installed, and the GPS receiver measures the coordinates of the road boundary line; and a road map module for producing a road map by correcting the obtained coordinate values. It is characterized in that it includes.

In a road map construction system capable of surveying a road boundary line through a mobile mapping system according to an embodiment of the present invention, the road map module includes: a road map DB; a confirmation module for confirming whether there is an intersection point with another road in the measurement target road boundary line; If there is an intersection, it records the coordinate value of the intersection first, and if it does not exist, it records the coordinate value of any point on the road boundary line to obtain the coordinate value of any point on the boundary line of the target road for which the road map is to be produced. ; an error function module for obtaining an error function from a coordinate value of a reference point position for correcting the obtained coordinate value and a coordinate value obtained from a GPS receiver; a corrected coordinate module for obtaining a corrected coordinate value by correcting the coordinate value obtained from the arbitrary point module with an error function; a mutual agreement module that measures the distance and angle with other measurement points whose coordinate values are stored in the road map DB, calculates the relative coordinate values of the coordinate values obtained by the correction value, and checks whether they coincide with each other; a storage module for storing the coordinate values in the road map DB when the corrected coordinate values of the measurement points match the relative coordinate values; and a generation module for completing a road map by connecting the stored corrected coordinate values; It is preferable to include

In the road map construction system capable of surveying the road boundary line through the mobile mapping system according to an embodiment of the present invention, the mobile mapping system includes: an elastic support unit coupled to an upper portion of the movable vehicle; The lower part is accommodated in the elastic support unit is elastically supported, the rotating part having a rotating motor and a rotating screw; a rotation control unit capable of communicating with the rotating unit to control the rotating unit; and a camera module coupled to an upper portion of the rotating unit; It is preferable to include

In the road map construction system that can measure the road boundary line through the mobile mapping system according to an embodiment of the present invention, the elastic support unit unit includes: a clamp unit coupled to the rotating motor to surround the outer wall of the rotating motor; a plurality of first elastic support parts having one side detachably coupled to the clamp part to elastically support the clamp part; a accommodating body accommodated therein by the clamp portion and the plurality of first elastic support portions, the other side portions of the plurality of first elastic support portions are detachably coupled to each other and disposed inside the elastic case; and a plurality of second elastic support units having one side detachably coupled to the outer wall of the receiving body and the other side being detachably coupled to the inner wall of the elastic case to elastically support the receiving body; It is preferable to include

In the road map construction system capable of surveying the road boundary line through the mobile mapping system according to an embodiment of the present invention, the clamp unit includes: a first clamp body surrounding one side of the rotating motor and provided with first flanges at both ends; a second clamp body surrounding the other side of the rotary motor and having second flanges at both ends; a fastening part coupled to the first flange and the second flange facing each other to fasten the first clamp body and the second clamp body to the rotating motor; and a plurality of clamp magnet members provided on the first clamp body and the second clamp body to attach the first clamp body and the second clamp body to the rotating motor by magnetic force. It is preferable to include

In the road map construction system that can measure the road boundary line through the mobile mapping system according to an embodiment of the present invention, the second elastic support part, one side is detachably coupled to the outer wall of the receiving body, and the other side is detachable to the inner wall of the elastic case A pair of second elastic support body coupled; a second spring having both ends respectively coupled to a pair of second elastic support bodies; a pair of second magnet members respectively provided on a pair of second elastic support bodies; And both ends are coupled to the pair of second elastic support body corrugation for sealing the second spring; It is preferable to include

In the road map construction system capable of surveying the road boundary line through the mobile mapping system according to an embodiment of the present invention, the camera unit includes: a camera body; The upper part is detachably coupled to the camera body to the lower part of the camera body, and the lower part is detachable body coupled to the rotating part; a camera cover unit provided movably on the upper part of the camera body to reflect light incident on the camera body and prevent foreign substances from entering the camera body; and a camera cover driving part provided on the camera body and connected to the camera cover part to move the camera cover part up and down; It is preferable to include

In the road map construction system capable of surveying the road boundary line through the mobile mapping system according to an embodiment of the present invention, the camera body includes: a camera lens provided on an upper surface of the camera body; a protective cover provided on the side of the camera body to cover an area in which the camera cover part and the camera cover driving part come into contact with each other; a first coupling flange provided at the bottom of the camera body and coupling the camera body to the detachable fixing unit when the detachable body is separated; a coupling groove provided on the camera body to be close to the protective cover; and a support gear provided on one side of the camera body and in contact with the outer wall of the camera cover to guide the rotation of the camera cover. It is preferable to include

In the road map construction system that can measure the road boundary line through the mobile mapping system according to an embodiment of the present invention, the detachable body includes a second coupling flange provided under the detachable body and detachably coupled to the detachable fixing unit; and a fastening hole provided to pass through the detachable body and provided as a coupling place of the bolt member for coupling the detachable body to the camera body. It is preferable to include

In the road map construction system that can measure the road boundary line through the mobile mapping system according to the embodiment of the present invention, the camera cover part is provided to be moved vertically on the upper part of the camera body and covers the upper part of the camera body to form a camera body. a camera cover body that reflects incident light and prevents foreign substances from entering the camera body; Transparent portion provided on the top of the camera cover body; and a coupling bar provided at a lower portion of the camera cover body and coupled to the coupling groove; Including, it is preferable that the coupling bar is completely engaged with the coupling groove when the lower part of the camera cover body is moved to prevent shaking of the camera cover body.

The present invention having the above configuration has the effect of constructing a GIS that provides more precise road information by more accurately and precisely measuring the road boundary line and the intersection point between roads, which are prone to errors, and correcting the error of the measured coordinate values. there is

In addition, the present invention has the effect of checking the date reflected information included in the GIS and searching for information by the measurement date by classifying and storing the survey data by measurement date.

It is revealed that the accompanying drawings are exemplified as a reference for understanding the technical idea of the present invention, and the scope of the present invention is not limited thereby.
1 is a block diagram showing each configuration of a road map construction system capable of surveying a road boundary line through a mobile mapping system according to an embodiment of the present invention.
2 is a flowchart illustrating a process of producing a road map using a road map construction system according to an embodiment of the present invention.
3 is a flowchart illustrating a process of more precisely manufacturing a road map using the road map construction system according to an embodiment of the present invention.
4 is a view for explaining the selection of an arbitrary point for measurement of arbitrary coordinates on the road boundary of the road map construction system according to an embodiment of the present invention.
5 is a flowchart illustrating a method of storing road attribute information corresponding to coordinate values together for each survey date using the road map construction system according to an embodiment of the present invention.
6 is a view showing the overall appearance of a mobile mapping system according to an embodiment of the present invention.
7 is a view showing a longitudinal section of the elastic support unit according to an embodiment of the present invention.
8 is a view showing a cross section of a clamp unit according to an embodiment of the present invention.
9 is a view showing an exploded state of each part of the rotation control unit according to an embodiment of the present invention.
10 is a diagram schematically showing a cross-sectional view of a camera module according to an embodiment of the present invention.
11 is a view showing a state in which the camera cover part is moved downward according to an embodiment of the present invention and the coupling bar is meshed with the coupling groove.
12 is a view showing a state in which the detachable body is separated from the camera body according to an embodiment of the present invention.

Hereinafter, based on the accompanying drawings, the present invention will be described in detail so that those of ordinary skill in the art can easily implement it. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

In addition, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

1 is a block diagram illustrating each configuration of a road map construction system capable of surveying a road boundary line through a mobile mapping system according to an embodiment of the present invention, and FIG. 2 is a road map according to an embodiment of the present invention. It is a flowchart showing the process of producing a road map using the construction system.

As shown, in the road map construction system according to the present invention, a GPS receiver 110 and a camera module 600 are installed, and the mobile mapping system 100 is surveyed with the GPS receiver 110 to obtain the coordinates of the road boundary line. ) and a road map module 200 for producing a road map by correcting the obtained coordinate values.

The road map module 200 includes a road map DB 210, a check module 220 for checking whether an intersection with another road exists in the measurement target road boundary line, and a coordinate value of the intersection if there is an intersection. is first recorded, and if it does not exist, the arbitrary point module 230 obtains the coordinate values of any point on the boundary line of the target road for which the road map is to be produced by recording the coordinate values of any point on the road boundary line, and correcting the obtained coordinate values The error function module 240, which obtains an error function from the coordinate value of the reference point position and the coordinate value obtained from the GPS receiver 110 for Measure the distance and angle with other measurement points whose coordinate values are stored in the obtained corrected coordinate module 250 and the road map DB 210, and calculate the relative coordinate values of the coordinate values obtained for the correction values to see if they match each other The mutual agreement module 260 to check, if the corrected coordinate value of the measurement point and the relative coordinate value match, the storage module 270 for storing the coordinate value in the road map DB 210 and the stored corrected coordinate value are connected to create a road map It includes a generating module 280 to complete.

The mobile mapping system 100 includes an elastic support unit 700 coupled to an upper portion of a movable vehicle 300 , and a lower portion is accommodated in an elastic support unit 700 to be elastically supported, and a rotation motor 410 and a rotation screw A rotating unit 400 having a 420, a rotation control unit 500 capable of communicating with the rotating unit 400 to control the rotating unit, and a camera module 600 coupled to the upper portion of the rotating unit 400 are included.

Although not shown, the mobile mapping system 100 includes a Global Navigation Satellite System (GNSS)/Inertial Navigation System (INS), a Distance Measurement Instrument (DMI), and a laser scanner. (laser scanner) and the like may be further included.

First, in order to produce a road map, the mobile mapping system 100 equipped with the GPS receiver 110 and the road road map DB 210 of the road map module 200 are prepared to measure the road boundary coordinates ( S101).

Next, the confirmation module 220 checks whether or not there is an intersection point of the road on the measurement target road boundary line (S102), and the arbitrary point module 230 first records the coordinate value of the intersection point if there is an intersection point and, if it does not exist, the coordinate values of any point are recorded to obtain the coordinate values (Xi, Yi, Zi) of any point on the boundary line of the target road for which the road map is to be produced (S103).

The corrected coordinate module 250 obtains a corrected value corrected for the error of the obtained coordinate values (Xi, Yi, Zi) of any point on the road boundary line (S104), and the storage module 270 stores the corrected coordinate value ( After S105), the generation module 280 connects the corrected coordinate values to complete the road map (S106).

At this time, the method used to correct the error included in the coordinate value measured by GPS is as follows.

In other words, the causes of errors included in GPS measurement coordinates can be divided into two main categories: errors caused by environmental factors and errors caused by factors of the GPS itself. The environmental factors that affect the error are the error of the ionosphere, the error caused by the refraction of the convective layer, and the time error of the artificial satellite. However, if coordinates are obtained using GPS in a short time in a small area, the environmental factors affecting the obtained coordinates can be neglected because time and space are limited.

Therefore, the corrected coordinates obtained through the GPS by correcting the errors caused by the factors of the GPS itself of all coordinate data and removing the errors will be more reliable coordinates.

The error function module 240 obtains coordinate values SX, SY, and SZ of a reference point position for obtaining correction coordinates. Next, the GPS receiver 110 is moved to the reference point to obtain coordinate values GX, GY, and GZ, and then an error function is obtained.

The formula to find the error function is as follows.

Error function(DX, DY, DZ)=(DX=GX-SX, DY=GY-SY, DZ=GZ-SZ)

Coordinate values (X _i , Y _i , Z _i :i=1,2,......,n) measured in real time are obtained using the error function, and corrected coordinate values (DX _i , DY _i , DZ _i ) is obtained.

Correction coordinate value (DX _i , DY _i , DZ _i )=(DX _i =X _i -DX, DY _i =Y _i -DY, DZ _i =Z _i -DZ)

3 is a flowchart illustrating a process of more precisely manufacturing a road map using the road map construction system according to an embodiment of the present invention.

The mutual agreement module 260 measures the distance and angle with other measurement points where the coordinate values are stored in the road road map DB 210 prepared in advance, and calculates the relative coordinate values of the coordinate values obtained by the correction value. (S205) It is checked whether they coincide with each other (S206).

If the corrected coordinate value of the measurement point and the relative coordinate value do not match, the coordinate value correction of the above-described step is repeated. If they match, the storage module 270 stores the coordinate value in the road map DB 210 (S207).

The generating module 280 completes the road map by connecting the stored corrected coordinate values to each other (S208).

4 is a view for explaining selection of an arbitrary point for measurement of arbitrary coordinates on a road boundary of the road map construction system according to an embodiment of the present invention.

As shown, if there is an intersection point 31 with another road on one road boundary line, the arbitrary point module 230 measures the intersection point before other points to obtain a coordinate value, and if there is no intersection point, the road boundary line A coordinate value is obtained by selecting an arbitrary point 32 on the image.

A road map is produced by connecting the coordinate values obtained in this way. In addition to this, by obtaining the corrected coordinate values using the error correction method described above, a high-precision road map with little error at intersections is produced.

5 is a flowchart illustrating a method of storing road attribute information corresponding to coordinate values together for each survey date using the road map construction system according to an embodiment of the present invention.

As shown, a mobile mapping system 100 equipped with a GPS receiver 110 and a road road map DB 210 are prepared to prepare a road boundary coordinate value measurement (S401).

The confirmation module 220 checks whether there is an intersection point of the road on the measurement target road boundary line (S402), and the arbitrary point module 230 first records the coordinate value of the intersection point if there is an intersection point, If it does not exist, the coordinate values of any point are recorded to obtain the coordinate values (Xi, Yi, Zi) of any point on the boundary line of the target road for which the road map is to be produced (S403).

The corrected coordinates module 250 obtains a corrected value corrected for the error of the obtained coordinate values (Xi, Yi, Zi) of any point on the road boundary (S404), and the storage module 270 stores the corrected coordinate values ( After S406), the generation module 280 connects the corrected coordinate values to complete the road map (S407).

At this time, the storage of the corrected coordinate values by the storage module 270 is stored in the road map DB 210 so that the road map DB 210 corresponds to the corresponding coordinate values of the road property information including the surrounding road facilities and construction status of the target road for which the road map is to be produced. Information stored in the GIS more effectively by entering (S405), classifying the input road attribute information by survey date and storing it in the road map DB 210 to correspond to each corrected coordinate value (S406). to make use of

That is, the storage module 270 classifies the survey data by survey date and stores it to correspond to the measurement coordinate value, so that the date on which the geographic information included in the GIS is reflected and the geographic information can be searched for each measurement date. .

Figure 6 is a view showing the overall appearance of the mobile mapping system according to an embodiment of the present invention, Figure 7 is a view showing a longitudinal section of the elastic support unit according to an embodiment of the present invention, Figure 8 is the present invention It is a view showing a cross section of the clamp unit according to an embodiment of the.

As shown, the mobile mapping system 100 includes an elastic support unit 700 coupled to an upper portion of a movable vehicle 300 , a lower portion being accommodated in an elastic support unit 700 and elastically supported, and a rotation motor ( 410) and a rotating unit 400 having a rotating screw 420, a rotating control unit 500 capable of communicating with the rotating unit 400 to control the rotating unit, and a camera module 600 coupled to the upper portion of the rotating unit 400 made including

The elastic support unit 700 includes a clamp part 710 coupled to the rotation motor 410 so as to surround the outer wall of the rotation motor 410 , and one side is detachably coupled to the clamp part 710 to be coupled to the clamp part 710 . A plurality of first elastic support parts 720 for elastically supporting, the clamp part 710 and the plurality of first elastic support parts 720 are accommodated therein, and the other side of the plurality of first elastic support parts 720 is detachably coupled. and the receiving body 730 disposed inside the elastic case 750, one side is detachably coupled to the outer wall of the receiving body 730, and the other side is detachably coupled to the inner wall of the elastic case 750, the receiving body 730 and a plurality of second elastic support parts 740 for elastically supporting the .

The clamp unit 710 surrounds one side of the rotating motor 410 and includes a first clamp body 711 provided with first flanges 711a at both ends, and the other side of the rotating motor 410 and is formed at both ends. The second clamp body 712 provided with the second flange 712a, and the first flange 711a and the second flange 712a facing each other are coupled to the first clamp body 711 and the second clamp body 712. The fastening part 713 for fastening the to the rotation motor 410, the first clamp body 711 and the second clamp body 712 are provided in the first clamp body 711 and the second clamp body 712 by magnetic force. Includes a plurality of clamp magnet members 714 for attaching to the rotation motor (410).

A plurality of first protrusions 711b may be provided on the first clamp body 711 to prevent the first clamp body 711 from sliding or twisting from the rotation motor 410 . A plurality of second protrusions 712b may also be provided on the second clamp body 712 , and the plurality of second protrusions 712b may function as the plurality of first protrusions 711b.

In this embodiment, since the first clamp body 711 and the second clamp body 712 are supported by a plurality of first elastic support parts 720 and can be fixed in position, in case of an emergency, a fastening part made of a bolt and a nut It can be coupled to the rotation motor 410 without the (713).

The plurality of first elastic support units 720, one side is detachably coupled to the inner wall of the receiving body 131 and the other side is detachably coupled to the first flange 711a and the second flange 712a of the clamp unit 710, respectively. A pair of first elastic support bodies 721 and a first spring 722 each of which both ends are coupled to a pair of first elastic support bodies 721, and a pair of first elastic support bodies 721 It includes a pair of first magnet members 723 provided respectively. In this embodiment, the plurality of first elastic support parts 720 may offset the impact transmitted from the outside to the inside of the receiving body 730 .

In this embodiment, since the plurality of first elastic support parts 720 are detachably coupled to the clamp part 710 and the receiving body 730 by magnetic force, there is an advantage that can be conveniently detached. In this embodiment, when the clamp unit 710 and the accommodating body 730 are not provided with a metal material to which the magnet is attached, a metal member attached to the magnet may be provided in the clamp unit 710 and the accommodating body 730 . .

In the present invention, the plurality of clamp magnet members 714 and the first magnet member 723 are prepared by mixing 70 to 89% by weight of alnico powder and 11 to 30% by weight of samarium-cobalt powder to prepare a magnetic powder, It is manufactured by dissolving 12 to 20% by weight of a binder, which is a mixture of epoxy resin, curing agent, and curing accelerator, in 80 to 88% by weight of magnetic powder in acetone and mixing, followed by drying, pulverization, compression molding and curing, and the thickness is 4,000 to 5,000 μm. Heterojunction type composite magnets manufactured by molten salt method and in which strontium-ferrite magnet layers with a thickness of 600 to 700 μm are joined to the alnico-based composite magnet can be applied.

When the above heterojunction type composite magnet is applied, the magnetic properties can be maximized by increasing the coercive force while maintaining the proper residual magnetic flux density by adding the rare earth magnetic material samarium-cobalt powder, and furthermore, by bonding the strontium ferrite composite magnet layer A higher coercive force can be obtained.

In the receiving body 730 , the clamp part 710 and the plurality of first elastic support parts 720 are accommodated therein, and the other side of the plurality of first elastic support parts 720 is detachably coupled to the inside of the elastic case 750 . can be placed in

The second elastic support part 740, one side is detachably coupled to the outer wall of the receiving body 730, and the other side is detachably coupled to the inner wall of the elastic case 750 to elastically support the receiving body 730.

In this embodiment, the plurality of second elastic support parts 740 have a pair of second elastic support bodies in which one side is detachably coupled to the outer wall of the receiving body 730 and the other side is detachably coupled to the inner wall of the elastic case 750 ( 741), a second spring 742 whose both ends are respectively coupled to a pair of second elastic support bodies 741, and a pair of second magnets respectively provided on a pair of second elastic support bodies 741 The member 743 and both ends are coupled to the pair of second elastic support bodies 741 to seal the second spring 742 and include a wrinkle portion 744 for protecting the second spring 742 .

In this embodiment, the plurality of second elastic support parts 740 may be disposed on the outside of the accommodation body 730 to cushion the impact transmitted from the outside of the elastic case 750 to the accommodation body 730 .

This embodiment has the advantage of being able to protect the rotating part 400 more stably because it is possible to double buffer the shock applied to the rotating part 400 from the outside of the receiving body as well as from the inside of the receiving body.

In this embodiment, the plurality of second elastic support parts 740 may further include a connection member 745 for connecting each of the second elastic support parts 740 . In this embodiment, the connecting member 745 connects each of the second elastic support parts 740 , so that the interval between the second elastic support parts 740 can be kept constant, and there is an advantage of convenient storage.

9 is a view showing an exploded state of each part of the rotation control unit according to an embodiment of the present invention.

The rotation control unit 500, the rotation case 510 in which the cylindrical insertion hole 511 is formed, the button communication unit 520 mounted on the inner lower surface of the insertion hole 511, and the insertion hole 511 are vertically movable and rotatable. The control module 540 to be inserted, a plurality of rotation elastic members 530 mounted between the lower surface of the control module 540 and the lower surface of the insertion hole 511, and a ring-shaped rotation coupled to the upper end of the insertion hole 511 It includes a control cover (550). The rotating unit 400 performs a function of horizontally rotating the camera module 600 coupled thereto.

The rotation control unit 500 may communicate with the rotation unit 400 and control the rotation angle of the rotation unit 400 so that the user can rotate the camera module 600 at a desired angle.

That is, when the user operates the rotation control unit 500 , the rotation unit 400 connected thereto by wire or wirelessly rotates, and accordingly, the camera module 600 can be adjusted to a desired angle.

The rotating case 510 is formed in a hexahedral shape as a whole, and may be disposed at a position adjacent to the rotating unit 400 or disposed at a remote location for convenient use by a user.

A cylindrical insertion hole 511 is formed in the rotation case 510 so that the control module 540 can be inserted thereinto. A seating hole 512 is formed on the upper end of the insertion hole 511 so that the rotation control cover 550 can be seated. The seating hole 512 has a relatively larger diameter than the insertion hole 511 .

The control module 540 is formed in a cylindrical shape as a whole, and is inserted into the insertion hole 511 to be vertically movable and rotatable. An inlet 541 is formed in the control module 540 to rotate the control module 540 by putting a user's hand.

On the outer surface of the control module 540, a plurality of rotation detecting units 543 are disposed in the longitudinal direction. The plurality of rotation sensing units 543 are spaced apart from each other at equal intervals, and may detect the amount of rotation of the control module 540 .

For example, the plurality of rotation detection units 543 may be formed of magnets, and a module for detecting magnetic force is installed inside the insertion hole 511 of the rotation case 510 to control the movement of the rotation detection unit 543 . The rotation amount of the module 540 may be detected.

A plurality of control teeth 542 are protruded from the upper end of the control module 540 . The plurality of control teeth 542 may be engaged with a plurality of cover teeth 551 to be described later, and functions to suppress the rotation of the control module 540 .

A plurality of rotation elastic members 530 are mounted between the lower surface of the control module 540 and the lower surface of the insertion hole 511 . The plurality of rotation elastic members 530 provide an elastic force to the control module 540 . If the user does not press the control module 540 by putting his or her hand into the inlet 541 , the control module 540 moves upward by the elastic force of the rotating elastic member 530 .

The button communication unit 520 is mounted on the inner lower surface of the insertion hole (511). When the user puts his or her hand into the inlet 541 to press the control module 540 , the lower surface of the control module 540 may press the upper surface of the button communication unit 520 .

The button communication unit 520 generates a signal that the user wants to change the degree of rotation of the rotating unit 400 by using the control module 540 , and detects the amount of rotation of the control module 540 to rotate the rotating unit 400 . It calculates the angle and performs a function of communicating and transmitting signals and data generated by the rotation control unit 500 to the rotation unit 400 .

The rotation control cover 550 is formed in a ring shape and is coupled to the seating hole 512 . A plurality of cover teeth 551 are protrudingly formed on the inner surface of the rotation control cover 550 to be engaged with the plurality of control teeth 542 .

In addition, a plurality of control scales 552 are formed on the upper surface of the rotation control cover 550 so that the user can easily recognize the amount of rotation of the control module 540 . The inner diameter of the rotation control cover 550 is the same as the diameter of the control module 540, the outer diameter of the rotation control cover 550 is the same as the diameter of the seating hole (512).

The operation process of the rotation control unit 500 is as follows.

First, when the user puts his hand into the inlet 541 of the control module 540 and presses the control module 540 in order to change the rotation angle of the rotating part 400 , the control module 540 rotates the elastic member 530 . ) overcomes the elastic force and moves downward so that the lower surface of the control module 540 is in contact with the button communication unit 520 .

Accordingly, the button communication unit 520 recognizes the start of the operation of the rotation control unit 500 and communicates with the rotation unit 400 , and the rotation unit 400 prepares to operate the rotation motor 410 .

Next, when the user rotates the control module 540, the positions of the plurality of rotation detection units 543 are changed to change the rotation amount of the control module 540, and the button communication unit 520 calculates and processes this to the rotation unit ( 400) to determine the rotation angle.

When all rotation of the control module 540 is completed as desired by the user, the user removes his or her hand from the inlet 541 , and the control module 540 moves upward again by the elastic force of the rotation elastic member 530 .

At this time, the control tooth 542 of the control module 540 is meshed with a plurality of cover teeth 551 formed on the inner surface of the rotation control cover 550, rotation of the control module 540 is prevented, and the control module 540 ) of the rotation angle is fixed.

When the lower surface of the control module 540 is separated from the button communication unit 520, the button communication unit 520 recognizes that the operation of the rotation control unit 500 is completed and communicates with the rotating unit 400, and the rotating unit 400 rotates By completing the operation of the motor 410, the camera module 600 is no longer rotated.

10 is a view schematically showing a cross-sectional view of a camera module according to an embodiment of the present invention, and FIG. 11 is a state in which the camera cover according to an embodiment of the present invention is moved downward so that the coupling bar is engaged with the coupling groove. is a view showing a state in which the detachable body according to an embodiment of the present invention is separated from the camera body.

As shown, the camera module 600 is coupled to the upper portion of the rotating unit 400, the camera body 610, and the upper portion is attached to the lower portion of the camera body 610 and the camera body 610 obliquely detachably coupled, The lower part of which is a detachable body 620 coupled to the rotating unit 400, and movably provided on the upper part of the camera body 610 to reflect light incident on the camera body 610 as well as external foreign substances to the camera body 610. ), a camera cover unit 630 that prevents the inflow into the camera body 610 and is connected to the camera cover unit 630 to move the camera cover unit 630 in the vertical direction. may include.

The camera body 610 includes a camera lens 611 provided on the upper surface of the camera body 610 and a camera cover unit 630 and a camera cover driving unit 640 provided on the side of the camera body 610 to each other. A protective cover 612 covering the contact area, and a first coupling flange 613 provided at the lower end of the camera body 610 and coupling the camera body 610 to the rotating part 400 when the detachable body 620 is separated. , a coupling groove 614 provided on the camera body 610 in proximity to the protective cover 612, and a camera body 610 provided on one side (left side in the illustrated embodiment) and the camera cover part 630 and a support gear 615 for guiding the rotation of the camera cover unit 630 in contact with the outer wall of the .

12, the camera body 610 can be separated from the detachable body 620, and only the camera body 610 is bolted or welded to the rotating part 400 using the first coupling flange 613. can In this case, the lower surface of the camera body 610 is provided to be inclined, so that the camera body 610 can be installed (tilted) on the rotating part 400 inclinedly without a separate structure, so the user can easily change the shooting angle. have.

In addition, the support gear 615 may be engaged with the gear teeth provided on the outer wall of the camera cover body 631 to guide the trajectory of the camera cover portion when the camera cover portion 630 moves up and down.

The detachable body 620 is provided at the lower portion of the detachable body 620 and is provided to penetrate the second coupling flange 621 welded or bolted to the rotating part 400 and the detachable body 620, and the detachable body 620 is provided. It includes a fastening hole 622 provided as a coupling place of the bolt member coupled to the camera body (610).

In this embodiment, the upper end of the fastening hole 622 may be provided with a step on which the head of the bolt member is supported.

The camera cover unit 630 is provided to be moved in the vertical direction on the upper portion of the camera body 610, and covers the upper portion of the camera body 610 to reflect light incident on the camera body 610, as well as foreign foreign matter A camera cover body 631 that prevents inflow into the camera body 610, a transparent part 632 provided on the upper part of the camera cover body 631, and a coupling groove provided on the lower part of the camera cover body 631 ( It includes a coupling bar 633 coupled to 614).

In this embodiment, the camera cover body 631 is screwed to the outer wall of the camera body 610, and may be moved in the vertical direction of the camera body 610 by driving the camera driving unit. The coupling bar 633 is fully engaged with the coupling groove 614 provided in the camera body 610 when the camera cover body 631 is moved downward to prevent the camera cover body 631 from shaking. This can be usefully used when the camera shakes excessively in a bad environment, such as when the mobile mapping system 100 moves very quickly.

In this embodiment, the transparent part 632 is provided at the upper end of the camera cover body 631 to expand the imaging area of the camera lens 611, it is possible to prevent foreign substances from flowing into the camera lens (611).

The camera cover driving unit 640 moves the camera cover body 631 in the vertical direction, and is connected to the driving motor 641 provided in the camera body 610 and the driving motor 641 to rotate the camera cover body. It is engaged with the gear provided on the outer wall of the 631 and includes a driving gear 642 for rotating the camera cover body 631 in a clockwise or counterclockwise direction.

In this embodiment, the exposure degree of the camera lens 611 is controlled by operating the camera cover driver 640 according to the external environment or the illuminance of the sun, operation, etc. by a control module (not shown) provided in the camera body 610. can

For example, when the light irradiated from the sun is strong, the camera cover unit 630 can be moved to further cover the camera lens 611, and when the working environment is not good, the camera cover unit 630 is moved downward. The coupling bar 633 provided in the camera cover unit 630 may be inserted into the coupling groove 614 provided in the camera body 610 .

On the other hand, the camera lens 811 of the present invention includes a modified inorganic filler synthesized by mixing a silane-based resin with an inorganic oxide sol containing an inorganic oxide in methyl alcohol in a colloidal form, a cellosolve solvent, and itaconic acid ( Itaconic acid), an acid catalyst containing sulfonic acid, a coating composition containing a surfactant and water may form a coating layer on the lens surface.

In the composition for coating the camera lens 611, the modified inorganic filler may be included in an amount of 30 to 80 parts by weight. In addition, the modified inorganic filler may be composed of 12 to 20 parts by weight of a silane-based resin in 80 to 88 parts by weight of the inorganic oxide sol.

When the coating layer is formed on the camera lens 611 with the coating composition as described above, interference and UV yellowing can be removed from the lens, and excellent light transmittance is obtained, so it is possible to obtain a more accurate image image. .

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common 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

100: mobile mapping system 110: GPS receiver 200: road map module
210: road map DB 220: confirmation module 230: random point module
240: error function module 250: correction coordinate module 260: mutual agreement module
270: storage module 280: generation module 300: vehicle
400: rotating part 410: rotating motor 420: rotating screw
500: rotation control unit 510: rotation case 511: insertion hole
512: seating port 520: button communication unit 530: rotation elastic member
540: control module 541: inlet 542: control tooth
543: rotation detection unit 550: rotation control cover 551: cover teeth
552: control scale 600: camera module 610: camera body
611: camera lens 612: protective cover 613: first coupling flange
614: coupling groove 615: support gear 620: detachable body
621: second coupling flange 622: fastening hole 630: camera cover part
631: camera cover body 632: transparent part 633: coupling bar
640: camera cover driving unit 641: driving motor 642: driving gear
700: elastic support unit 710: clamp portion 711: first clamp body
711a: first flange 711b: first projection 712: second clamp body
712a: second flange 712b: second protrusion 713: fastening part
714: clamp magnet member 720: first elastic support 721: first elastic support body
722: first spring 723: first magnetic member 730: receiving body
740: second elastic support 741: second elastic support body 742: second spring
743: second magnet member 744: pleated portion 745: connecting member
750: elastic case

Claims (1)

a mobile mapping system in which a GPS receiver and a camera module are installed and surveying with the GPS receiver to obtain coordinate values of road boundaries; and a road map module for producing a road map by correcting the obtained coordinate values. including,
The road map module is
road map DB; a confirmation module for confirming whether there is an intersection point with another road in the measurement target road boundary line; If there is an intersection, it records the coordinate value of the intersection first, and if it does not exist, it records the coordinate value of any point on the road boundary line to obtain the coordinate value of any point on the boundary line of the target road for which the road map is to be produced. ; an error function module for obtaining an error function from a coordinate value of a reference point position for correcting the obtained coordinate value and a coordinate value obtained from a GPS receiver; a corrected coordinate module for obtaining a corrected coordinate value by correcting the coordinate value obtained from the arbitrary point module with an error function; a mutual agreement module that measures the distance and angle with other measurement points where the coordinate values are stored in the road map DB, calculates the relative coordinate values of the coordinate values for which the correction value is obtained, and confirms whether they coincide with each other; a storage module for storing the coordinate values in the road map DB when the corrected coordinate values of the measurement points match the relative coordinate values; and a generation module for completing a road map by connecting the stored corrected coordinate values; including,
The mobile mapping system,
an elastic support unit coupled to an upper portion of the movable vehicle; The lower part is accommodated in the elastic support unit is elastically supported, the rotating part having a rotating motor and a rotating screw; a rotation control unit capable of communicating with the rotating unit to control the rotating unit; and a camera module coupled to an upper portion of the rotating unit; including,
The elastic support unit,
a clamp unit coupled to the rotating motor to surround the outer wall of the rotating motor; a plurality of first elastic support parts having one side detachably coupled to the clamp part to elastically support the clamp part; a accommodating body accommodated therein by the clamp portion and the plurality of first elastic support portions, the other side portions of the plurality of first elastic support portions are detachably coupled to each other and disposed inside the elastic case; and a plurality of second elastic support parts having one side detachably coupled to the outer wall of the receiving body and the other side being detachably coupled to the inner wall of the elastic case to elastically support the receiving body; including,
The clamp unit,
A first clamp body surrounding one side of the rotating motor and having first flanges at both ends; a second clamp body surrounding the other side of the rotary motor and having second flanges at both ends; a fastening part coupled to the first flange and the second flange facing each other to fasten the first clamp body and the second clamp body to the rotating motor; and a plurality of clamp magnet members provided on the first clamp body and the second clamp body to attach the first clamp body and the second clamp body to the rotating motor by magnetic force. includes,
The second elastic support portion,
a pair of second elastic support bodies, one side of which is detachably coupled to the outer wall of the receiving body and the other is detachably coupled to the inner wall of the elastic case; a second spring having both ends respectively coupled to a pair of second elastic support bodies; a pair of second magnet members respectively provided on a pair of second elastic support bodies; And both ends are coupled to the pair of second elastic support body corrugation for sealing the second spring; including,
The camera module is
camera body; The upper part is detachably coupled to the camera body to the lower part of the camera body, and the lower part is detachable body coupled to the rotating part; a camera cover unit provided movably on the upper part of the camera body to reflect light incident on the camera body and prevent foreign substances from entering the camera body; and a camera cover driving part provided on the camera body and connected to the camera cover part to move the camera cover part up and down; including,
The camera body,
A camera lens provided on the upper surface of the camera body; a protective cover provided on the side of the camera body to cover an area in which the camera cover part and the camera cover driving part come into contact with each other; a first coupling flange provided at the bottom of the camera body and coupling the camera body to the detachable fixing unit when the detachable body is separated; a coupling groove provided on the camera body to be close to the protective cover; and a support gear provided on one side of the camera body and in contact with the outer wall of the camera cover to guide the rotation of the camera cover. includes,
The detachable body,
a second coupling flange provided at the lower portion of the detachable body and detachably coupled to the detachable fixing unit; and a fastening hole provided to pass through the detachable body and provided as a coupling place of the bolt member for coupling the detachable body to the camera body. including,
The camera cover unit,
a camera cover body provided to move in the vertical direction on the upper part of the camera body and covering the upper part of the camera body to reflect light incident on the camera body and prevent foreign substances from entering the camera body; Transparent portion provided on the top of the camera cover body; and a coupling bar provided at a lower portion of the camera cover body and coupled to the coupling groove; including,
The coupling bar is completely engaged with the coupling groove when the lower part of the camera cover body is moved to prevent shaking of the camera cover body.

Images