A three-dimensional laser detection device for roads and airport pavements

Abstract

The present invention relates to a three-dimensional laser detection device for roads and airport pavements, which belongs to the field of detection instruments, and includes a laser collector, a vertical module, a horizontal module, a suspension bracket and a roller; the roller is located directly below the suspension bracket; the laser collector is fixed on the suspension bracket; the suspension bracket is installed on the vertical module, and the vertical module is installed on the horizontal module. Among them, the combination of the horizontal module and the vertical module can arbitrarily adjust the height of the laser from the surface of the object to be measured, so as to determine parameters such as the laser brightness and the effective acquisition width; the roller speed is controlled by a PC, and the accuracy and repeatability tests at any acquisition speed can be performed; the cylinder surface of the roller can be provided with simulated road surface diseases, which can be used to identify the accuracy of the software for identifying specific diseases, and can effectively control the influence of natural light. In summary, the present invention can better complete the calibration and debugging of the laser collector.

Description

Technical Field

[0001] The invention relates to the field of detection instruments, and in particular to a three-dimensional laser detection device for roads and airport pavements. Background Art

[0002] With the vigorous promotion of 3D laser detection technology in engineering construction, the application of laser collectors is becoming more and more extensive, and debugging work is becoming more and more normalized. Before installation and during use, the 3D laser collector must be calibrated and debugged for indicators such as sampling frequency, distance between the laser and the surface of the detected object, effective detection width, uniformity of the horizontal brightness of the line laser, collection effect of typical diseases, and repeatability verification.

[0003] At present, there is no mature laser collector debugging platform in China. The existing technical solutions usually install the laser collector on the vehicle and then test it on the actual road. First, it is difficult to ensure that the wheel tracks are completely consistent and the vehicle speed is stable during the test, that is, it is not convenient to control the calibration conditions because the stability of the vehicle's driving speed and the repeatability of the driving trajectory cannot be guaranteed. Second, it is difficult to find a completely flat road for testing. When debugging on the collection vehicle, it is not convenient to control the distance between the laser collector and the ground due to the bumps and vibrations of the vehicle. Third, on-site road testing is relatively cumbersome, closed traffic requires more manpower and material resources, and it is difficult to eliminate the influence of natural light. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a three-dimensional laser detection device for roads and airport pavements, which controls the rollers through a PC to control the acquisition speed and achieve repeatability testing. The distance between the laser and the surface of the detection object and the effective detection width are adjusted through the combination of vertical modules and horizontal modules, thereby achieving uniformity of the horizontal brightness of the laser.

[0005] The technical solution of the present invention is achieved in this way:

[0006] The present invention provides a three-dimensional laser detection device for roads and airport pavements, comprising a laser collector, a vertical module, a horizontal module, a suspension bracket and a roller; the roller is located directly below the suspension bracket; the laser collector is fixed on the suspension bracket; the suspension bracket is installed on the vertical module, and the vertical module is installed on the horizontal module.

[0007] The preferred technical solution of the present invention is that the horizontal module includes a horizontal slide rail, a horizontal slider and a horizontal slide seat; the horizontal slider is provided with a first slide groove matched with the horizontal slide rail, and corresponding bolt holes are provided on the horizontal slider and the horizontal slide seat; the horizontal slide rail is connected to the first slide groove, and the horizontal slider is bolted to the horizontal slide seat; the vertical module is provided with a slide connecting plate, and corresponding bolt holes are provided on the slide connecting plate and the horizontal slide seat; the slide connecting plate is bolted to the horizontal slide.

[0008] The preferred technical solution of the present invention is that the vertical module further comprises a vertical slide rail, a vertical slider and a vertical slide seat; the vertical slider is provided with a second slide groove adapted to the vertical slide rail, and the vertical slider and the vertical slide seat are provided with corresponding bolt holes; the vertical slide rail is connected to the second slide groove, and the vertical slider is bolted to the vertical slide seat;

[0009] The preferred technical solution of the present invention is that a three-dimensional laser detection device for road and airport pavement also includes a base; support plates are provided on the two side plates of the base, and the two side plates and the support plate are provided with corresponding bolt holes; a roller is also embedded in the center of the support plate; a through hole is provided in the center of the roller; the roller includes a cylinder and a central axis; a three-dimensional model of a typical road surface disease is provided on the surface of the cylinder. The central axis is adapted to the through hole; the side plate is bolted to the support plate, and the through hole is matched with the central axis.

[0010] The preferred technical solution of the present invention is that a roller servo motor is fixed on the side plate; a distance encoder is also fixed on one of the support plates; the central shaft is connected to the distance encoder, and the central shaft is connected to the roller servo motor through a conveyor belt;

[0011] The preferred technical solution of the present invention is that it also includes a PC equipped with a control program, a horizontal control servo motor and a vertical control servo motor; the horizontal control servo motor is provided with a horizontal screw and is fixed at one end of the horizontal module; the horizontal module is also fixed with a horizontal screw slider, and the horizontal screw slider is provided with a thread compatible with the horizontal screw; the horizontal screw slider is threadedly connected to the horizontal screw; the vertical control servo motor is provided with a vertical screw and is fixed at one end of the vertical module; the vertical module is also fixed with a vertical screw slider, and the vertical screw slider is provided with a thread compatible with the vertical screw; the vertical screw slider is threadedly connected to the vertical screw; the horizontal control servo motor, the vertical control servo motor and the drum servo motor are all connected to the PC through wires.

[0012] The preferred technical solution of the present invention is that the suspension bracket includes a fixed top plate, a rib plate, and a connecting plate; the fixed top plate and the connecting plate are vertically connected to each other; the rib plate and the fixed top plate are vertically connected to each other and fixedly connected to the connecting plate.

[0013] The preferred technical solution of the present invention is that the fixed top plate is provided with a groove corresponding to the installation hole of the laser collector; the connecting plate is provided with a hole corresponding to the fixing hole on the vertical slide; the fixed top plate is bolted to the laser collector, and the connecting plate is bolted to the vertical slide.

[0014] The preferred technical solution of the present invention is that it also includes a truss; the truss includes a plurality of transverse rods, longitudinal rods and a truss connecting plate; the transverse rods are provided with holes corresponding to the bottom mounting holes of the horizontal module; the top of the base is also provided with a top plate, and the top plate is connected to the side plate; the truss is located on the base, and the truss connecting plate is fixed between the truss and the base; the horizontal module and the transverse rods are bolted.

[0015] Beneficial effects of the present invention:

[0016] First, the combination of the horizontal module and the vertical module can arbitrarily adjust the height of the laser from the surface of the object to be measured, thereby determining parameters such as laser brightness and effective acquisition width;

[0017] Second, the PC controls the roller speed, and can perform accuracy and repeatability tests at any acquisition speed;

[0018] Third, the surface of the drum can be provided with simulated road surface defects, which can be used to test the accuracy of the recognition software for specific defects and can effectively control the influence of natural light.

[0019] In summary, the three-dimensional laser detection device for roads and airport pavements provided by the present invention can better complete the calibration and debugging of the laser collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the overall structure of a three-dimensional laser detection device for roads and airport pavements provided by the present invention;

[0022] Figure 2A front view of a three-dimensional laser detection device for roads and airport pavements provided by the present invention;

[0023] Figure 3 An AA cross-sectional view of a three-dimensional laser detection device for roads and airport pavements provided by the present invention;

[0024] Figure 4 This is a partial enlarged view of the B direction of a three-dimensional laser detection device for roads and airport pavements provided by the present invention.

[0025] Figure 5 A CC cross-sectional view of a three-dimensional laser detection device for roads and airport pavements provided by the present invention;

[0026] Figure 6 This is a partial enlarged view of the D direction of a three-dimensional laser detection device for roads and airport pavements provided by the present invention.

[0027] Figure 7 This is a component assembly diagram of a roller and a base of a three-dimensional laser detection device for roads and airport pavements provided by the present invention.

[0028] Figure 8 A schematic diagram of a suspension bracket for a roller of a three-dimensional laser detection device for road and airport pavement provided by the present invention.

[0029] The descriptions of the reference numerals in the figures are as follows:

[0030] 1. Vertical module 11, slide connection plate 12, vertical slide rail 13, vertical slider 14, vertical slide 15, vertical control servo motor 151, vertical screw 152, vertical screw slider 2, horizontal module 21, horizontal slide rail 22, horizontal slider 23, horizontal slide 24, horizontal control servo motor 241, horizontal screw 242, horizontal screw slider 3, suspension bracket 31, fixed top plate 32, rib plate 33, connecting plate 4, roller 41, cylinder 42, central axis 43, roller servo motor 5, laser collector 6, base 61, top plate 62, side plate 63, support plate 64, roller 65, distance encoder 7, truss 71, transverse rod 72, longitudinal rod 73, truss connecting plate 8, drag chain DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1 As shown, a three-dimensional laser detection device for road and airport pavement includes a laser collector 5, a vertical module 1, a horizontal module 2, a suspension bracket 3 and a roller 4; the roller 4 is located directly below the suspension bracket 3; the laser collector 5 is fixed on the suspension bracket 3; the suspension bracket 3 is installed on the vertical module 1, and the vertical module 1 is installed on the horizontal module 2. Specifically, the laser collector 5 is installed on the suspension bracket 3, and the suspension bracket 3 is installed on the vertical module 1. The suspension bracket 3 can be adjusted to rise and fall on the vertical module 1, and then the laser collector 5 installed on the suspension bracket 3 can control the distance from the surface of the detection object, and the vertical module 1 is installed on the horizontal module 2. The vertical module 1 as a whole can slide horizontally on the horizontal module 2, and further, the suspension bracket 3 can slide horizontally, so that the laser collector 5 can be adjusted horizontally. The roller 4 is located directly below the laser collector 5, and the effect of laser scanning and collection is relatively best. The drum 4 performs a rotational motion, and the rotational speed can be controlled by a PC in which a control program is written, thereby achieving accuracy and repeatability testing at any acquisition speed.

[0035] like Figure 2 and Figure 4As shown, the horizontal module 2 includes a horizontal slide rail 21, a horizontal slider 22 and a horizontal slide seat 23; the horizontal slider 22 is provided with a first slide groove adapted to the horizontal slide rail 21, and corresponding bolt holes are provided on the horizontal slider 22 and the horizontal slide seat 23; the horizontal slide rail 21 is connected to the first slide groove, and the horizontal slider 22 is bolted to the horizontal slide seat 23; the vertical module 1 is provided with a slide seat connecting plate 11, and corresponding bolt holes are provided on the slide seat connecting plate 11 and the horizontal slide seat 23; the slide seat connecting plate 11 is bolted to the horizontal slide seat 23. Specifically, the horizontal module 2 is divided into two upper and lower parts, and the two horizontal modules 2 are kept parallel to each other. There are slide seat connecting plates 11 at both ends of the vertical module 1, and the slide seat connecting plate 11 at the upper end is fixed to the horizontal module 2 at the upper end, and the slide seat connecting plate 11 at the lower end is fixed to the horizontal module 2 at the lower end. In addition, a drag chain 8 is also provided on the horizontal module 2, which can guide the wire to make directional movement and play a certain protective role.

[0036] Figure 2 , Figure 4 and Figure 6 As shown, the vertical module 1 also includes a vertical slide rail 12, a vertical slider 13 and a vertical slide seat 14; the vertical slider 13 is provided with a second slide groove adapted to the vertical slide rail 12, and the vertical slider 13 and the vertical slide seat 14 are provided with corresponding bolt holes; the vertical slide rail 12 is connected to the second slide groove, and the vertical slider 13 is bolted to the vertical slide seat 14. Specifically, the length of the vertical module 1 should be greater than 1.5m, and the spacing between the two horizontal modules 2 is consistent with the length of the vertical module 1. In addition, the vertical module 1 is also provided with a drag chain 8, which can guide the wire to make directional movement and play a certain protective role.

[0037] Figure 7 As shown, a three-dimensional laser detection device for road and airport pavement also includes a base 6; support plates 63 are provided on the two side plates 62 of the base 6, and the two side plates 62 and the support plate 63 are provided with corresponding bolt holes; a roller 64 is also embedded in the center of the support plate 63; a through hole is provided in the center of the roller 64; the roller 4 includes a cylinder 41 and a central axis 42; a three-dimensional model of a typical road surface disease is provided on the surface of the cylinder 41; the central axis 42 is adapted to the through hole; the side plate 62 is bolted to the support plate 63, and the through hole is matched with the central axis 42. Specifically, the diameter of the cylinder 41 is 50 cm, and the central axis 42 and the test line laser are maintained in the same vertical plane.

[0038] Figure 7As shown, a roller servo motor 43 is fixed on the side plate 62; a distance encoder 65 is also fixed on one of the support plates 63; the distance encoder 65 can transmit a rotation angle signal to the laser collector; the right end of the central shaft 42 is connected to the distance encoder 65; the central shaft 42 is connected to the roller servo motor 43 through a conveyor belt. In the existing technology, the roller servo motor 43 drives the central shaft 42 to move using a belt drive. A pulley is installed on the roller servo motor 43, and another pulley is also installed on the central shaft 42. The roller servo motor 43 is started and then drives the central shaft 42 to rotate through the belt drive. The diameter of the cylinder 41, the speed of the roller servo motor and the transmission ratio should be able to ensure that the maximum rotational linear speed of the outer diameter of the cylinder 41 is not less than 100km / h.

[0039] Figure 2 and Figure 4 As shown, it also includes a PC equipped with a control program, a horizontal control servo motor 24 and a vertical control servo motor 15; the horizontal control servo motor 24 is provided with a horizontal screw 241 and is fixed at one end of the horizontal module 2; the horizontal module 2 is also fixed with a horizontal screw slider 242, and the horizontal screw slider 242 is provided with a thread matched with the horizontal screw 241; the horizontal screw slider 242 is threadedly connected with the horizontal screw 241; specifically, the horizontal screw slider 242 is fixedly connected with the horizontal slide 23, the horizontal control servo motor 24 drives the horizontal screw 241, and the horizontal screw 241 drives the horizontal slide 23 to move horizontally, thereby achieving the purpose of driving the suspension bracket 3 to move horizontally, and further, prompting the laser collector 5 to perform horizontal scanning and collection.

[0040] Figure 2 and Figure 6 As shown, the vertical control servo motor 15 is provided with a vertical screw 151, and is fixed at one end of the vertical module 1; the vertical module 1 is also fixed with a vertical screw slider 152, and the vertical screw slider 152 is provided with a thread compatible with the vertical screw 151; the vertical screw slider 152 is threadedly connected to the vertical screw 151; the vertical screw slider 152 is threadedly connected to the vertical screw 151; specifically, the vertical screw slider 152 is fixedly connected to the vertical slide 14, the vertical control servo motor 15 drives the vertical screw 151, and the vertical screw 151 drives the vertical slide 14 to move vertically, thereby achieving the purpose of driving the suspension bracket 3 to move vertically, and further, promoting the laser collector to detect the distance of the surface of the object.

[0041] The horizontal control servo motor 24, the vertical control servo motor 15 and the roller servo motor 43 are all connected to the PC through wires. The PC is equipped with a control program that can control the rotation of the servo motors of the vertical module 1, the horizontal module 2 and the roller 4; the single-chip microcomputer or PLC control technology in the prior art can independently control the movement of the horizontal module 2, the movement of the vertical module 1 and the movement of the roller 4, and the use of the horizontal module 2 should be able to keep the two horizontal modules 2 moving synchronously; the wires and the PC are not shown in the legend, and the movement of the vertical module 1 should be able to be accurately positioned according to the preset height; the movement of the roller 4 should ensure that the outermost circle linear speed of the roller 4 is kept in a uniform rotation at any speed within the range of 0-100km / h.

[0042] Figure 8 As shown, the suspension bracket includes a fixed top plate 31, a rib plate 32 and a connecting plate 33; the fixed top plate 31 and the connecting plate 33 are vertically connected to each other; the rib plate 32 and the fixed top plate 31 are vertically connected to each other and fixedly connected to the connecting plate 33. Specifically, the fixed top plate 31 is rectangular, the short side of the rectangle is vertically connected to the connecting plate 33, and the connection method of the fixed top plate 31 and the connecting plate 33 is welding; the fixed top plate 31 is provided with a countersunk hole, the rib plate 32 is a right-angled trapezoid, and its side surface is provided with a threaded hole corresponding to the fixed top plate 31, and the fixed top plate 31 and the rib plate 32 are connected by screws, which plays a supporting role.

[0043] Figure 8 As shown, the fixed top plate 31 is provided with a groove corresponding to the mounting hole of the laser collector 5; the connecting plate 33 is provided with a hole corresponding to the fixing hole on the vertical slide 14; the fixed top plate 31 is bolted to the laser collector 5, and the connecting plate 33 is bolted to the vertical slide 14.

[0044] Figure 1 , Figure 3 and Figure 7 As shown, a three-dimensional laser detection device for road and airport pavement also includes a truss 7; the truss includes a plurality of transverse rods 71, longitudinal rods 72 and a truss connecting plate 73; the transverse rod 71 is provided with a hole corresponding to the bottom mounting hole of the horizontal module 2; the top of the base 6 is also provided with a top plate 61, which is connected to the side plate 62; the truss 7 is located on the base 6, and the truss connecting plate 73 is fixed between the truss 7 and the base 6; the horizontal module 2 and the transverse rod 71 are bolted. Among them, the height of the truss 7 is greater than 1.5m, and it is vertically installed on the top of the base 6.

[0045] Beneficial effects of the present invention:

[0046] First, the combination of the horizontal module and the vertical module can arbitrarily adjust the height of the laser from the surface of the object to be measured, thereby determining parameters such as laser brightness and effective acquisition width;

[0047] Second, the PC controls the roller speed, and can perform accuracy and repeatability tests at any acquisition speed;

[0048] Third, the surface of the drum body can be provided with simulated road surface diseases, which can be used to test the accuracy of the recognition software for specific diseases, and can effectively control the influence of natural light.

[0049] In summary, the three-dimensional laser detection device for roads and airport pavements provided by the present invention can better complete the calibration and debugging of the laser collector.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any obvious modifications, equivalent substitutions, improvements, etc. derived therefrom should be included in the protection scope of the present invention.

Claims

1. A three-dimensional laser detection device for road and airport pavement, comprising a laser collector (5), characterized in that: It also includes a vertical module (1), a horizontal module (2), a hanging bracket (3) and a roller (4); The roller (4) is located directly below the suspension bracket (3); The laser collector (5) is fixed on the suspension bracket (3); the suspension bracket (3) is installed on the vertical module (1), and the vertical module (1) is installed on the horizontal module (2); The horizontal module (2) comprises a horizontal slide rail (21), a horizontal slider (22) and a horizontal slide seat (23); the horizontal slider (22) is provided with a first slide groove matched with the horizontal slide rail (21), and the horizontal slider (22) and the horizontal slide seat (23) are provided with corresponding bolt holes; The horizontal slide rail (21) is connected to the first slide groove, and the horizontal slide block (22) is bolted to the horizontal slide seat (23); The vertical module (1) is provided with a slide connection plate (11), and corresponding bolt holes are provided on the slide connection plate (11) and the horizontal slide (23); the slide connection plate (11) is bolted to the horizontal slide (23); The vertical module (1) further comprises a vertical slide rail (12), a vertical slider (13) and a vertical slide seat (14); the vertical slider (13) is provided with a second slide groove adapted to the vertical slide rail (12), and the vertical slider (13) and the vertical slide seat (14) are provided with corresponding bolt holes; The vertical slide rail (12) is connected to the second slide groove, and the vertical slide block (13) is bolted to the vertical slide seat (14); The suspension bracket comprises a fixed top plate (31), a rib plate (32) and a connecting plate (33); The fixed top plate (31) and the connecting plate (33) are vertically connected to each other; the rib plate (32) and the fixed top plate (31) are vertically connected to each other and fixedly connected to the connecting plate (33).

2. A three-dimensional laser detection device for road and airport pavement according to claim 1, characterized in that: Also includes a base (6); A support plate (63) is provided on the two side plates (62) of the base (6), and the two side plates (62) and the support plate (63) are provided with corresponding bolt holes; a roller (64) is also embedded in the center of the support plate (63); a through hole is provided in the center of the roller (64); The drum (4) comprises a drum body (41) and a central shaft (42); A three-dimensional model of a typical road surface disease is arranged on the surface of the cylinder (41); The central axis (42) is adapted to the through hole; The side plate (62) is bolted to the support plate (63), and the through hole is matched with the central axis (42).

3. A three-dimensional laser detection device for road and airport pavement according to claim 2, characterized in that: A roller servo motor (43) is fixed on the side plate (62); One of the support plates (63) is also fixed with a distance encoder (65); The central shaft (42) is connected to the distance encoder (65), and the central shaft (42) is connected to the roller servo motor (43) through a conveyor belt.

4. A three-dimensional laser detection device for road and airport pavement according to claim 3, characterized in that: It also includes a PC equipped with a control program, a horizontal control servo motor (24) and a vertical control servo motor (15); The horizontal control servo motor (24) is provided with a horizontal screw rod (241) and is fixed to one end of the horizontal module (2); The horizontal module (2) is also fixed with a horizontal screw slider (242), and a thread matching the horizontal screw (241) is provided in the horizontal screw slider (242); The horizontal screw rod slider (242) is threadedly connected to the horizontal screw rod (241); The vertical control servo motor (15) is provided with a vertical screw rod (151) and is fixed to one end of the vertical module (1); The vertical module (1) is also fixed with a vertical screw slider (152), and the vertical screw slider (152) is provided with a thread matching the vertical screw (151); The vertical screw rod slider (152) is threadedly connected to the vertical screw rod (151); The horizontal control servo motor (24), the vertical control servo motor (15) and the roller servo motor (43) are all connected to the PC via wires.

5. The three-dimensional laser detection device for roads and airport pavements according to claim 1, characterized in that: The fixed top plate (31) is provided with a groove corresponding to the mounting hole of the laser collector (5); The connecting plate (33) is provided with a hole corresponding to the fixing hole on the vertical sliding seat (14); The fixed top plate (31) is connected to the laser collector (5) by bolts, and the connecting plate (33) is connected to the vertical slide seat (14) by bolts.

6. The three-dimensional laser detection device for roads and airport pavements according to claim 2, characterized in that: Also includes a truss (7); The truss comprises a plurality of transverse rods (71), longitudinal rods (72) and a truss connecting plate (73); The transverse rod (71) is provided with a hole corresponding to the bottom mounting hole of the horizontal module (2); the top of the base (6) is also provided with a top plate (61), and the top plate is connected to the side plate (62); The truss (7) is located on the base (6), and the truss connecting plate (73) is fixed between the truss (7) and the base (6); The horizontal module (2) and the transverse rod (71) are connected by bolts.

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