Measuring device adopting laser scanning

Abstract

The utility model discloses a measuring device adopting laser scanning. The measuring device comprises a laser scanning device (1) and a measuring identification device (2), the laser scanning device (1) is provided with a mini laser scanner (3); the measurement identification device (2) is provided with an identification plate (18), and the laser scanning device (1) and the measurement identification device (2) are respectively provided with a magnetic attraction base (11); the mini laser scanner (3) is connected with the magnetic attraction base (11) through the scanner supporting rod (4); the identification plate (18) is connected with the magnetic attraction base (11) through an identification plate frame (19). By adopting the technical scheme, the problems that a conventional tripod is erected to install a mini laser scanner and a measurement identification target is installed in a working space in a wide-water-area and far-shore measurement environment without a construction platform are solved; data processing is efficient and rapid, measurement precision is high, and the operation mode is safe, flexible and convenient.

Description

Technical Field

[0001] The utility model belongs to the field of measurement technology of building, road and bridge construction engineering, and more specifically, relates to a measurement device using three-dimensional laser scanning. Background Art

[0002] After the steel pipe piles are sunk, the completion status of the cross-sea bridge needs to be measured. However, since the construction area is far away from the embankment, there is no construction platform in the construction area and it is in a pure water working environment. The existing technology can use the following measurement methods:

[0003] 1. Using GNSS RTK measurement technology (i.e. global navigation satellite system real-time kinematic positioning technology) to directly measure the finished product, a crane ship is required to work with the hanging basket, which results in low measurement efficiency and high safety risks in the measurement operation;

[0004] 2. The measurement technology using drone photography is greatly affected by the wind and waves at sea, the drone operation stability is low, the drone safety cannot be guaranteed, and the operation time is long. The results of on-site drone photography measurement technology experiments show that its measurement accuracy cannot meet the construction requirements; at the same time, affected by the rise and fall of the tide, the position of the pile top is below the normal water level, and the pile top can only be exposed above the water surface at low tide, and the effective measurement operation time throughout the day is short.

[0005] 3D laser scanning technology is a technology that has emerged since the mid-1990s. It is another breakthrough in surveying and mapping technology after the GNSS spatial positioning system. The 3D laser scanner uses the principle of laser ranging to project the laser onto the surface of the object being measured, and then reflects it back to the sensor in the scanner. The scanner calculates the distance between it and the object, determines the position of the object in space, and obtains 3D point cloud data.

[0006] Currently, 3D laser scanners are mostly used with camera tripods or tripods used by conventional measuring instruments. However, in wide waters and far from shores without construction platforms, conventional tripods have no working space to set up instruments, and no working space to install measuring identification targets.

[0007] Using keywords such as "offshore; pile; measurement" to test existing public technical literature, the following results were obtained:

[0008] 1. Chinese patent document: "A method for measuring and positioning offshore steel pipe pile sinking", patent (application) number: 202211273261.1; the technical solution recorded is:

[0009] "The offshore steel pipe pile sinking measurement and positioning method is to build a positioning system on the pile driving ship, which includes three GPS locators, four laser scanners, two inclinometers and one camera; the system pre-positioning uses three GPS locators and two inclinometers on the pile driving ship to determine the position and posture of the hull, and obtains the absolute position of the center of the steel pipe pile guide frame pile holder by measuring the hull parameters and converting the hull coordinate system to the engineering coordinate system, so as to guide the pile driving ship to enter the operating position to anchor and carry out pile lifting and pile erection; the system's precise positioning uses the line scanning function of four laser scanners on the basis of real-time positioning of three GPS locators to achieve real-time monitoring of the verticality of the steel pipe piles";

[0010] The technical effects recorded are:

[0011] "The improved and optimized positioning system of the present invention has the function of comprehensive, real-time and automatic monitoring of pile positioning; it automatically monitors the hull posture, displays the position of the sunken piles, and prevents pile collision; and it has high measurement accuracy."

[0012] 2. Chinese patent document: "An observation platform suitable for three-dimensional laser scanning of steel pipe pile cofferdams", patent (application) number: 201920841591.3; the technical solution recorded is:

[0013] "An observation platform suitable for three-dimensional laser scanning of steel pipe pile cofferdams, comprising a protective cover, a forced centering base, studs, legs, shockproof cotton, piers, and steel plates; the protective cover is arranged above the forced centering base, the studs pass through the forced centering base to be connected to the protective cover, the forced centering base is connected to three legs, the three legs are arranged in a regular triangular pyramid shape, the steel plate is welded to the steel pipe pile, the piers are arranged on the steel plate, the bottom of the legs passes through the piers to be connected to the steel plate, and the shockproof cotton is wrapped around the three legs";

[0014] The technical effects recorded are:

[0015] "It has a reasonable structure, is easy to build and is highly practical. The new observation platform can meet the observation needs of different measuring equipment such as GNSS machines, total stations, and three-dimensional laser scanners under steel pipe pile cofferdam conditions; especially when using three-dimensional laser scanners for measurement, it can effectively avoid resonance problems caused by scanning vibrations and improve stability during measurement."

[0016] However, the technical solutions recorded in the above-mentioned public technical documents have not been able to solve the problems and defects existing in the prior art of the measurement device using laser scanning: "In the measurement environment of wide waters and far shores without a construction platform, there is no working space for setting up instruments on conventional tripods, and there is no working space for installing measurement identification targets." Utility Model Content

[0017] The utility model provides a measuring device adopting laser scanning, which aims to solve the problem of installing measuring instruments on a remote shore without a construction platform and improve the measuring accuracy and efficiency.

[0018] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0019] The utility model discloses a measuring device using laser scanning, comprising a laser scanning device and a measuring identification device; the laser scanning device is provided with a mini laser scanner; the measuring identification device is provided with an identification plate, and both the laser scanning device and the measuring identification device are provided with a magnetic base; the mini laser scanner is connected to the magnetic base via a scanner support rod; and the identification plate is connected to the magnetic base via an identification plate frame.

[0020] The magnetic base is provided with a connecting base and a magnetic base magnet; the connecting base and the magnetic base magnet are connected through a plurality of adjusting screws.

[0021] The scanner support rod adopts a telescopic rod body; one end of the scanner support rod is connected to the mini laser scanner, and the other end is connected to the connecting base.

[0022] The telescopic rod is connected to the mini laser scanner via a scanner connector, and a connector control switch is arranged on the scanner connector.

[0023] An inverted level bubble is arranged on the telescopic rod body.

[0024] The identification plate frame is connected to the connection base.

[0025] The identification plate is circular, and is provided with a front side of the identification plate and a back side of the identification plate. A cross identification pattern is provided on the front side of the identification plate.

[0026] A magnetic switch is arranged on the magnet of the magnetic base.

[0027] A circular level bubble is arranged on the connection base.

[0028] The connection base is provided with mounting bolts for connecting with the telescopic rod body or with the identification plate frame.

[0029] The utility model adopts the above technical scheme to solve the problem of setting up a conventional tripod to install a mini laser scanner and installing a measurement identification target without an operating space in a wide water area or a far shore without a construction platform. The data processing is efficient and fast, the measurement accuracy is high, and the operation method is safe, flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The contents shown in the attached drawings and the symbols in the drawings are briefly described as follows:

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of the scanner support rod;

[0033] Figure 3 for Figure 1 A side view of the magnetic base structure;

[0034] Figure 4 for Figure 3 A front view of the structure shown;

[0035] Figure 5 for Figure 4 A schematic top view of the structure shown;

[0036] Figure 6 for Figure 1 A front view schematic diagram of the measuring marking device in FIG.

[0037] Figure 7 for Figure 6 A schematic diagram of the back side of the structure shown;

[0038] Figure 8 for Figure 7 A side view of the structure shown;

[0039] Fig. 9 This is a schematic diagram of the laser scanning device of the utility model when it is in upright operation;

[0040] Fig.10 It is a schematic diagram of the laser scanning device of the utility model when it is working upside down;

[0041] Fig.11 This is a schematic diagram of the application state of the measurement identification device of the utility model.

[0042] The markings in the figure are:

[0043] 1. Laser scanning device, 2. Measuring and marking device, 3. Mini laser scanner, 4. Scanner support rod, 5. Telescopic rod body, 6. Telescopic rod connecting screw hole, 7. Inverted level bubble, 8. Buckle socket, 9. Connector control switch, 10. Scanner connector, 11. Magnetic base, 12. Magnetic base magnet, 13. Magnetic switch, 14. Connecting base, 15. Adjusting screw, 16. Mounting bolt, 17. Circular level bubble, 18. Marking plate, 19. Marking plate frame, 20. Marking plate connecting screw hole, 21. Front of marking plate, 22. Cross marking pattern, 23. Back of marking plate, 24. Steel structure object. DETAILED DESCRIPTION

[0044] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the utility model.

[0045] like Figures 1 to 11 The structure of the utility model shown is a measuring device using laser scanning, including a laser scanning device 1 and a measuring identification device 2. The utility model aims to provide a magnetic mini laser scanner operating support rod and a measuring identification device to solve the problem that in wide waters and far shores without construction platforms, conventional tripods have no working space to set up mini laser scanners and no working space to install measuring identification targets.

[0046] In order to solve the problems existing in the prior art and overcome its defects, realize the invention purpose of solving the problem of installing measuring instruments on the far shore without a construction platform, and improve the measurement accuracy and efficiency, the specific technical solution adopted by the utility model is:

[0047] like Figure 1 As shown, the utility model adopts a measuring device using laser scanning, the laser scanning device 1 is provided with a mini laser scanner 3; the measuring identification device 2 is provided with an identification plate 18, and the laser scanning device 1 and the measuring identification device 2 are both provided with a magnetic base 11; the mini laser scanner 3 is connected to the magnetic base 11 through a scanner support rod 4; the identification plate 18 is connected to the magnetic base 11 through an identification plate frame 19.

[0048] The utility model is a safe and convenient measuring tool. In a wide water area and a far shore without a construction platform, the mini laser scanner can solve the problem of no working space to set up a conventional tripod and inconvenient to set up a measuring mark target when scanning a steel structure object. The operation method is safe and efficient.

[0049] like Figure 3 , Figure 4 and Figure 5 As shown:

[0050] The magnetic base 11 is provided with a connecting base 14 and a magnetic base magnet 12 ; the connecting base 14 and the magnetic base magnet 12 are connected via a plurality of adjusting screws 15 .

[0051] A magnetic switch 13 is provided on the magnetic base magnet 12 .

[0052] A circular level bubble 17 is provided on the connection base 14 .

[0053] The connection base 14 is provided with mounting bolts 16 for connecting with the telescopic rod body 5 or with the identification plate frame 19 .

[0054] The magnetic base 11 is composed of a magnetic base magnet 12 and a connecting base 14. The connecting base 14 includes an adjusting screw 15, a circular level bubble 17 and a mounting bolt 16. The magnetic base magnet 12 and the connecting base 14 are connected and fixed as a whole by a connecting bolt. The mounting bolt 16 is a 5 / 8 British thread (15.87mm), which is suitable for connecting and installing a GNSS receiver.

[0055] like Figure 1 and Figure 2 As shown:

[0056] The scanner support rod 4 adopts a telescopic rod body 5; one end of the scanner support rod 4 is connected to the mini laser scanner 3, and the other end is connected to the connecting base 14.

[0057] The telescopic rod 5 is connected to the mini laser scanner 3 via a scanner connector 10 , and a connector control switch 9 is provided on the scanner connector 10 .

[0058] An inverted level bubble 7 is arranged on the telescopic rod body 5 .

[0059] The scanner support rod 4 device includes a telescopic rod, a telescopic rod connecting screw hole 6, an inverted level bubble 7, a limit buckle socket 8, a scanner connector 10 and a connector control switch 9.

[0060] The telescopic rod connecting screw hole 6 is a 5 / 8 British internal thread (15.87mm), and the telescopic rod is connected and fixed to the magnetic base 11 through the telescopic rod connecting screw hole 6; the telescopic rod is connected and fixed to the mini laser scanner 3 through the scanner connector 10; the height of the telescopic rod can be adjusted through the snap-on socket 8.

[0061] like Figure 6 , Figure 7 and Figure 8 As shown:

[0062] The identification plate frame 19 is connected to the connection base 14 .

[0063] The identification plate 18 is circular, and is provided with an identification plate front side 21 and an identification plate back side 23 , and the identification plate front side 21 is provided with a cross identification pattern 22 .

[0064] The measuring identification device 2 includes an identification plate connecting screw hole 20, an identification plate frame 19, and an identification plate 18. The identification plate connecting screw hole 20 is a 5 / 8 inch internal thread (15.87mm), and the identification plate frame 19 is connected and fixed to the magnetic base 11 through the identification plate connecting screw hole 20. The identification plate 18 can rotate around the rotation axis of the identification plate frame 19. The front side 21 of the identification plate is filled with a cross identification pattern 22; the back side 23 of the identification plate is not filled with a pattern.

[0065] The center of the cross mark formed by the cross mark pattern 22 on the front side 21 of the mark plate is colinear with the center line of the mark plate connecting screw hole 20. It is used for scanning by the mini laser scanner 3.

[0066] like Fig. 9 , Fig.10 and Fig.11 As shown, the workflow of the utility model is:

[0067] Installation and debugging of laser scanning device 1:

[0068] Open the magnetic base magnet 12 and adsorb the magnetic base 11 onto the steel structure object 24; the scanner support rod 4 is connected to the magnetic base 11 through a screw structure; the mini laser scanner 3 is connected to the scanner support rod 4 through the joint structure of the scanner connector 10.

[0069] like Fig. 9 As shown, when the mini laser scanner 3 is used upright, the retractable rod 5 is roughly straightened by using the circular level bubble 17 on the connection base 14 of the magnetic base;

[0070] like Fig.10 As shown, when the mini laser scanner 3 is used inverted, the inverted level bubble 7 on the scanner support rod 4 is used to roughly straighten the telescopic rod 5.

[0071] Installation and commissioning of measurement identification device 2:

[0072] like Fig.11 As shown, the magnetic base magnet 12 is opened, the magnetic base magnet 12 is adsorbed on the steel structure object 24, and the circular level bubble 17 is used to level the connection base 14;

[0073] The measuring marking device 2 is connected to the magnetic base 11 through a screw structure. The marking plate 18 is roughly placed flat and the cross pattern surface of the marking plate is slightly facing the position of the laser scanner. After scanning, the laser scanner generates a three-dimensional point cloud of the object to be measured. The cross center of the marking plate can be accurately punctured in the processing software.

[0074] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A measuring device using laser scanning, comprising a laser scanning device (1) and a measuring marking device (2), characterized in that: The laser scanning device (1) is provided with a mini laser scanner (3); the measuring identification device (2) is provided with an identification plate (18); the laser scanning device (1) and the measuring identification device (2) are both provided with a magnetic base (11); the mini laser scanner (3) is connected to the magnetic base (11) via a scanner support rod (4); and the identification plate (18) is connected to the magnetic base (11) via an identification plate frame (19).

2. The measuring device using laser scanning according to claim 1, characterized in that: The magnetic base (11) is provided with a connecting base (14) and a magnetic base magnet (12); the connecting base (14) and the magnetic base magnet (12) are connected via a plurality of adjusting screws (15).

3. The measuring device using laser scanning according to claim 2, characterized in that: The scanner support rod (4) adopts a telescopic rod body (5); one end of the scanner support rod (4) is connected to the mini laser scanner (3), and the other end is connected to the connection base (14).

4. The measuring device using laser scanning according to claim 3, characterized in that: The telescopic rod (5) is connected to the mini laser scanner (3) via a scanner connector (10), and a connector control switch (9) is provided on the scanner connector (10).

5. The measuring device using laser scanning according to claim 3, characterized in that: An inverted level bubble (7) is arranged on the telescopic rod body (5).

6. The measuring device using laser scanning according to claim 2, characterized in that: The identification plate frame (19) is connected to the connection base (14).

7. The measuring device using laser scanning according to claim 1, characterized in that: The identification plate (18) is circular and is provided with an identification plate front side (21) and an identification plate back side (23). The identification plate front side (21) is provided with a cross identification pattern (22).

8. The measuring device using laser scanning according to claim 2, characterized in that: A magnetic switch (13) is arranged on the magnetic base magnet (12).

9. The measuring device using laser scanning according to claim 2, characterized in that: A circular level bubble (17) is arranged on the connection base (14).

10. The measuring device using laser scanning according to claim 3, characterized in that: The connection base (14) is provided with a mounting bolt (16) for connecting with the telescopic rod body (5) or with the identification plate frame (19).

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