Image control point mark

Abstract

The utility model provides an image control point mark which comprises a positioning rod screwed on a marking plate, the lower end of the positioning rod abuts against an existing control point, scale marks are arranged on the side wall of the positioning rod, a gradienter is arranged at the top of the positioning rod, two supporting rods inserted into the ground are clamped to the outer edge of the marking plate, and the two supporting rods and the positioning rod are arranged in a triangular mode. Through cooperation with the existing control point, the space coordinate precision of the identification plate can be improved by using the precise coordinate of the existing control point and the elevation indicated by the positioning rod, and the measurement precision can be improved.

Description

Technical Field

[0001] This application relates to the technical field of road and bridge engineering, and more specifically, to a control point marker. Background Art

[0002] In the field of road and bridge engineering, unmanned aerial vehicle technology is usually used to collect road and bridge data. When collecting data, control points need to be arranged in the target area. The traditional method of arranging control points is to spray control point markers with paint. However, this method is greatly affected by the external environment, and the accuracy of the control points is not high, thus affecting the final measurement accuracy. Therefore, the inventor has proposed a control point marker. Summary of the Utility Model

[0003] The purpose of this application is to propose a control point marker to improve the measurement accuracy.

[0004] The embodiments of this application are implemented as follows:[[]]

[0005] This application provides a control point marker, which includes a positioning rod screwed onto a marking plate. The lower end of the positioning rod abuts against an existing control point. Scale lines are provided on the side wall of the positioning rod, and a level is provided at the top of the positioning rod. Two support rods inserted into the ground are clamped to the outer edge of the marking plate, and the two support rods and the positioning rod are arranged in a triangle.

[0006] By cooperating with the existing control point and using the accurate coordinates of the existing control point and the elevation indicated by the positioning rod, the spatial coordinate accuracy of the marking plate can be improved, which is beneficial to improving the measurement accuracy.

[0007] In an alternative embodiment, the marking plate is configured as a disc shape.

[0008] In an alternative embodiment, the surface of the marking plate has a marking area with obvious color difference.

[0009] In an alternative embodiment, the marking area is distributed in a fan shape.

[0010] In an alternative embodiment, the positioning rod is arranged at the axis of the marking plate.

[0011] In an alternative embodiment, a groove extending along the axial direction of the positioning rod is provided on the side wall of the positioning rod, and the scale lines are arranged at the bottom of the groove.

[0012] In an alternative embodiment, a clamping groove for clamping the support rod is provided on the outer edge of the marking plate.

[0013] In an alternative embodiment, the clamping groove is arranged along the radial direction of the marking plate as a whole.

[0014] In an alternative embodiment, the clamping grooves are symmetrically arranged on both sides of the positioning rod.

[0015] In an alternative embodiment, a positioning nut for clamping the identification plate is screwed onto the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only for explaining the present application and not for limiting the scope of the present application. In the drawings:

[0017] Figure 1 is a schematic diagram of an image control point marker according to an embodiment of the present application;

[0018] Figure 2 is an installation diagram of an image control point marker according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of an identification plate according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a positioning rod according to an embodiment of the present application;

[0021] REFERENCE SIGNS:

[0022] 10. Identification plate;

[0023] 20. Positioning rod;

[0024] 30. Support rod;

[0025] 40. Pile foundation;

[0026] 11. Identification area;

[0027] 12. Card slot;

[0028] 21. Groove;

[0029] 22. Scale line;

[0030] 23. Level;

[0031] 31. Positioning nut;

[0032] 41. Existing control point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiment 1

[0034] Please refer to Figures 1-4 , this embodiment provides an image control point marker to improve the measurement accuracy.

[0035] In this embodiment, the image control point marker includes a positioning rod 20 screwed onto the identification plate 10. The lower end of the positioning rod 20 abuts against the existing control point 41. The side wall of the positioning rod 20 is provided with scale lines 22, and the top of the positioning rod 20 is provided with a level 23. The outer edge of the identification plate 10 is clamped with two support rods 30 inserted into the ground, and the two support rods 30 and the positioning rod 20 are arranged in a triangular shape.

[0036] In this embodiment, by cooperating with the existing control point 41 and using the accurate coordinates of the existing control point 41 and the elevation indicated by the positioning rod 20, the spatial coordinate accuracy of the identification plate 10 can be improved, which is beneficial to improving the measurement accuracy.

[0037] It should be noted that during the construction of roads and bridges, the existing control points 41 are evenly distributed in the construction area, and the existing control points 41 are arranged on the pile foundations 40. The existing control points 41 are mostly stainless steel punctuation marks. These existing control points 41 that have been arranged during construction have the advantage of high coordinate accuracy, but they cannot be directly used as image control points. The image control point marker provided in this embodiment is used in cooperation with the existing control point 41, can utilize the accurate coordinate position of the existing control point 41, and then cooperate with the elevation determined by the positioning rod 20, so that the spatial coordinates of the identification plate 10 can be more accurate, and further improve the accuracy of the data collected by the UAV.

[0038] In this embodiment, the identification plate 10 is integrally constructed in a disc shape. A threaded hole is provided at the axis of the identification plate 10, and this threaded hole is used to screw and connect the positioning rod 20, so that the positioning rod 20 is vertically arranged with the identification plate 10 as a whole. A significantly colored identification area 11 is arranged on the top surface of the identification plate 10, and the identification area 11 is fan-shapedly distributed. The identification areas 11 are spaced apart on the top surface of the identification plate 10. At the same time, a slot 12 for clamping the support rod 30 is provided at the outer edge of the identification plate 10, and the slot 12 is arranged along the radial direction of the identification plate 10, and the slot 12 is symmetrically arranged on both sides of the positioning rod 20.

[0039] In addition, the positioning rod 20 is integrally constructed in a long circular rod shape. The positioning rod 20 is screwed onto the axis of the identification plate 10 as a whole. A groove 21 extending along its axial direction is provided on the side wall of the positioning rod 20, and the scale lines 22 are arranged at the bottom of the groove 21. The level 23 is fixedly connected to the top surface of the positioning rod 20. The level 23 is a bubble level, and the level 23 is vertically arranged with the positioning rod 23 as a whole and is parallel to the identification plate 10. As an example, the level 23 is arranged along the diameter direction of the positioning rod 20.

[0040] It should be understood that the verticality of the positioning rod 20 can be controlled through the level 23, and then the levelness of the identification plate 10 can be controlled.

[0041] In addition, the support rod 30 is a threaded rod. The whole support rod 30 is clamped inside the card slot 12. A positioning nut 31 for clamping the identification plate 10 is screwed on the support rod 30. The whole support rod 30 can be horizontally removed from the inside of the card slot 12, making disassembly and assembly more convenient. The two support rods 30 and the positioning rod 20 are arranged in a triangle, which can improve the stability of the support for the identification plate 10 and prevent the whole device from tilting.

[0042] During use, first abut the lower end of the positioning rod against the existing control point, and then rotate the identification plate to an appropriate height. At this time, the elevation of the identification plate can be determined through the scale line on the positioning rod. Finally, clamp the support rod inside the card slot and fix the identification plate with the positioning nut.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A control point marker, characterized in that: It includes a positioning rod screwed onto the identification plate, the lower end of the positioning rod abuts against the existing control point, the side wall of the positioning rod is provided with scale lines, the top of the positioning rod is provided with a spirit level, the outer edge of the identification plate is clamped with two support rods inserted into the ground, and the two support rods and the positioning rod are arranged in a triangle.

2. The image control point marker according to claim 1, characterized in that: The identification plate is configured in a disk shape.

3. The image control point marker according to claim 1, characterized in that: The surface of the identification plate has an identification area with obvious color difference.

4. The image control point marker according to claim 3, characterized in that: The marking areas are distributed in a fan shape.

5. The image control point marker according to claim 2, characterized in that: The positioning rod is arranged at the axis of the identification plate.

6. The image control point marker according to claim 1, characterized in that: The side wall of the positioning rod is provided with a groove extending along its axial direction, and the scale line is arranged at the bottom of the groove.

7. The image control point marker according to claim 1, characterized in that: The outer edge of the identification plate is provided with a slot for clamping the support rod.

8. The image control point marker according to claim 7, characterized in that: The card slot is arranged as a whole along the radial direction of the identification plate.

9. The image control point marker according to claim 8, characterized in that: The clamping grooves are symmetrically arranged on both sides of the positioning rod.

10. The image control point marker according to claim 1, characterized in that: A positioning nut for clamping the identification plate is screwed onto the support rod.

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