Laser distance measuring device

Abstract

The utility model discloses a laser distance measuring device which comprises a base assembly, a support assembly and a distance measuring assembly, the distance measuring assembly is located above the base assembly, the base assembly comprises a base, a main body frame, a power supply and control module, a test platform support structure, a test platform supporting structure and a test platform, and the main body frame, the power supply and control module, the test platform support structure and the test platform are arranged on the base. The testing platform support structure is arranged on the main body frame in a left-right moving mode, the testing platform supporting structure is arranged on the testing platform support structure in a front-back moving mode, the testing platform is arranged on the testing platform supporting structure, and the two sides of the power source and control module are connected with the main body frame and the support assembly respectively. Up-down displacement of the laser distance measuring sensor is achieved through the lifting piece, left-right displacement of the testing platform is achieved through cooperation of the testing platform support structure and the main body frame, and front-back displacement of the testing platform is achieved through cooperation of the testing platform supporting structure and the testing platform support structure. Therefore, the multi-complex-plane and multi-characteristic-index measured object can be automatically measured.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser ranging technical field, especially a kind of laser ranging device. BACKGROUND

[0002] Laser ranging module can quickly and accurately calculate the distance between ranging module and obstruction by the time of laser emitted by obstruction surface reflection module. In traditional case, only single ranging unit is used for measurement, when the measured article has multiple to-be-measured points, only the position of ranging module can be moved artificially or multiple fixed test modules are arranged.

[0003] Currently, there is a laser ranging platform that can move and adjust the position of laser ranging module. By setting a liftable support frame, the distance between the ranging assembly and the ranging platform can be flexibly adjusted. However, the automatic measurement is not considered, and the flexibility of the laser ranging platform is low, the degree of automation is not high, and the accuracy is low when repeatedly measuring. UTILITY MODEL CONTENT

[0004] According to the problems of low flexibility, low automation and low measurement accuracy of the laser ranging platform in the prior art, the utility model provides a laser ranging device.

[0005] The technical scheme of the utility model is as follows:

[0006] A laser ranging device, comprising a base assembly, a support assembly arranged on the base assembly, and a ranging assembly arranged on the support assembly, the ranging assembly being located above the base assembly, the base assembly comprising a base, a main frame arranged on the base, a power supply and control module, a test platform support structure, a test platform support structure, and a test platform, the test platform support structure being movably arranged on the main frame, the test platform support structure being movably arranged on the test platform support structure, the test platform being arranged on the test platform support structure, and the power supply and control module being connected to the main frame and the support assembly on both sides.

[0007] Further, the ranging assembly comprises a ranging platform main body shell, a top cover, a camera, a magnetic base and a laser ranging sensor, the laser ranging sensor is connected to the magnetic base and installed on the bottom side of the ranging platform main body shell through the magnetic base, and the camera is arranged on the bottom of the ranging platform main body shell.

[0008] Further, the laser ranging sensor and the magnetic base are both provided with a contact interface, and the laser ranging sensor and the magnetic base are oppositely arranged with the contact interface.

[0009] Further, the bottom side of the ranging platform body shell is provided with a plurality of grooves, the magnetic base is arranged on the bottom side of the ranging platform body shell through the grooves, the two sides of the magnetic base are provided with fixing plates, the inner side of the groove is provided with a fixing plate groove corresponding to the fixing plate, and the magnetic base is fixed on the bottom side of the ranging platform body shell through cooperation of the fixing plate and the fixing plate groove.

[0010] Further, the number of grooves arranged on the bottom side of the ranging platform body shell is not more than three.

[0011] Further, the two sides of the main frame connected with the test platform support structure are each provided with a set of sliding rails, and the two ends of the test platform support structure are respectively installed on the two sets of sliding rails to realize left-right movement on the main frame.

[0012] Further, the two sides of the test platform support structure connected with the test platform support structure are each provided with a set of guide rail grooves, and the two sides of the test platform support structure are respectively installed on the two sets of guide rail grooves to realize front-rear movement on the test platform support structure.

[0013] Further, the support assembly comprises a support body, a lifting piece and an I-shaped guide rail, the lifting piece is arranged on the I-shaped guide rail, the top of the lifting piece is connected with the ranging platform body shell, the base is connected with the bottom side of the lifting piece, and the two sides of the power supply and the control module are respectively connected with the main frame and the support body.

[0014] The utility model discloses beneficial effects at least include: through the lifting piece, the up and down displacement of laser ranging sensor is realized, through test platform support structure cooperation main frame, the left and right displacement of test platform is realized, and then through test platform support structure cooperation test platform support structure, the front and back displacement of test platform is realized, and then combining power supply and control module realizes the multiple adjustment of measuring point position in three -dimensional space in one measurement task, thereby can carry out automatic measurement to the multiple complex plane, multiple characteristic index measured article, avoid the attitude of measured object in the measurement process and lead to the reference not unified and the problem such as the decline of precision when adjusting artificially, and simultaneously can generate the three -dimensional modeling of measured article based on the collection data. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an overall structure schematic view of the laser ranging device.

[0016] Figure 2 It is a structure exploded view of the base assembly.

[0017] Figure 3 It is a structure schematic view of the test platform support structure and the test platform support structure.

[0018] Figure 4The structure decomposition schematic view of the ranging assembly is provided.

[0019] Figure 5 The structure schematic view of the laser base and the laser ranging sensor is provided.

[0020] Figure 6 The structure schematic view of the support assembly is provided.

[0021] Figure 7 The implementation flow schematic view of the ranging device is provided.

[0022] Figure 8 The motion trajectory planning step schematic view of the ranging device is provided.

[0023] Among them:

[0024] 1-base; 2-main frame; 3-power supply and control module; 4-test platform support structure; 5-test platform support structure; 6-test platform; 7-ranging platform main body shell; 8-top cover; 9-camera; 10-magnetic base; 11-laser ranging sensor; 12-contact interface; 13-groove; 14-fixing plate; 15-fixing plate groove; 16-slideway; 17-groove of guideway; 18-support body; 19-lifting piece; 20-I-shaped guideway. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0026] In combination Figures 1-6The utility model provides a kind of laser ranging device, including base assembly, support assembly being arranged on the base assembly and ranging assembly being arranged on the support assembly, the ranging assembly is located above base assembly, the base assembly includes base 1, and main frame 2 and power and control module 3 being arranged on base 1, test platform support structure 4, test platform support structure 5 and test platform 6, the structure of main frame 2 is a fixed frame, can provide a fixed position for test platform support structure 4, the test platform support structure 4 can be left and right movable setting on main frame 2, the test platform support structure 5 can be forward and backward movable setting on test platform support structure 4, the test platform 6 is set on test platform support structure 5, the power and control module 3 two sides are connected with main frame 2, support assembly respectively.

[0027] Power and control module 3 integrates power unit, calculation and control unit, can provide basic communication function, by serial port and wireless mode and other equipment receive motion instruction and send motion state, calculation and control unit can drive test platform 6 according to the instruction received and carry out plane movement on main frame 2, can also drive ranging assembly and carry out vertical direction motion on support assembly, and handle the data generated by camera 9 and laser ranging sensor 11 carried.

[0028] Further, the ranging assembly includes ranging platform main body shell 7, top cover 8, camera 9, magnetic base 10 and laser ranging sensor 11, the laser ranging sensor 11 is connected with magnetic base 10 and is installed on the bottom side of ranging platform main body shell 7 through magnetic base 10, the camera 9 is arranged at the bottom of ranging platform main body shell 7, ranging platform main body shell 7 includes the end part of I-shaped and the front end part of circular, ranging platform main body shell 7 is fixed on support assembly through end part, and front end part is located above base assembly, and front end part is used to install magnetic base 10 and camera 9, camera 9 is fixed at the bottom side center of the front end part of ranging platform main body shell 7 and is placed downward, and top cover 8 cooperates with front end part, and it is detachable, so that other components arranged in front end part can be conveniently installed and maintained.

[0029] Further, the laser ranging sensor 11 and magnetic base 10 are provided with contact interface 12, the laser ranging sensor 11 and the contact interface 12 arranged on magnetic base 10 are oppositely arranged, the laser ranging sensor 11 is fixed on magnetic base 10 by magnetic attraction, magnetic base 10 can move on the bottom side of ranging platform main body shell 7, magnetic base 10 can provide specific communication and power supply interface for controlling laser ranging sensor 11, and the laser ranging sensor 11 can provide specific magnetic attraction point and magnetic base for connection.

[0030] Further, the bottom side of the ranging platform main body shell 7 is provided with a plurality of grooves 13, the magnetic base 10 is arranged on the bottom side of the ranging platform main body shell 7 through the grooves 13, the magnetic base 10 is provided with a fixed plate 14 on both sides, the inside of the groove 13 is provided with a fixed plate groove 15 corresponding to the fixed plate 14, the magnetic base 10 is fixed on the bottom side of the ranging platform main body shell 7 through the cooperation of the fixed plate 14 and the fixed plate groove 15, and the magnetic base 10 moves in the groove 13 through the cooperation of the fixed plate 14 and the fixed plate groove 15.

[0031] Further, the number of grooves 13 arranged on the bottom side of the ranging platform main body shell 7 is not more than 3, specifically, when there are 3 grooves 13, they are distributed at 90° on the bottom side of the ranging platform main body shell 7, which can constrain the movement direction of the magnetic base 10 along the groove 13, and the ranging assembly is a multi-laser source ranging platform.

[0032] Further, one set of sliding rails 16 is arranged on both sides of the main frame 2 connected with the test platform support structure 4, and a power supply and control module 3 is installed on the outside of the sliding rail 16 close to the support assembly on the main frame 2, the test platform support structure 4 moves through the power supply and control module 3, and the test platform support structure 4 is installed on the two sets of sliding rails 16 respectively to realize left and right movement on the main frame 2.

[0033] Further, one set of guide rail grooves 17 is arranged on both sides of the test platform support structure 4 connected with the test platform support structure 5, and the test platform support structure 5 is installed on the two sets of guide rail grooves 17 respectively to realize forward and backward movement on the test platform support structure 4, and the test platform support structure 5 can be driven and controlled in movement position by an external motor.

[0034] Further, the support assembly includes a support body 18, a lifting piece 19 and an I-shaped guide rail 20, the lifting piece 19 is arranged on the I-shaped guide rail 20, the top of the lifting piece 19 is connected with the ranging platform main body shell 7, the lifting piece 19 can stably adjust the height of the ranging assembly to adapt to the shape of the measured object and related test requirements, specifically, the end part of the I-shaped guide rail 20 on the ranging platform main body shell 7 is connected with the top of the lifting piece 19, which can move vertically along the I-shaped guide rail 20, and the I-shaped guide rail 20 can limit the vertical movement height of the ranging platform main body shell 7, the base 1 is connected with the bottom side of the lifting piece 19, the lifting piece 19 can realize lifting through a driving motor and a screw rod assembly, one end of the screw rod is fixed on the driving motor, the other end is fixed on the top wall of the support body 18, and the displacement of the ranging platform main body shell 7 is realized through a ball bearing, and the power supply and control module 3 is connected with the main frame 2 and the support body 18 respectively on both sides,

[0035] The ranging device constructs three-dimensional point cloud data of the object to be measured by using the collected laser point position data, and performs surface fitting by using random sample consensus (RANSAC).

[0036] As shown in the figure, according to the multi-point laser array automatic surface detection and three-dimensional modeling system provided by the ranging device, the following steps are included: Figure 7

[0037] Step one, the user fixes the object to be measured on the test platform;

[0038] Step two, the planar features and the point positions of the object to be measured are transmitted to the computing platform of the device through the reserved wireless / wired communication mode;

[0039] Step three, the computing platform compares the planar features of the object to be measured provided by the camera with the image collected by the camera, and automatically adjusts the height of the multi-laser source ranging platform through the vertical lifting member;

[0040] Step four, according to the feature points provided by the user, the feature points are projected onto a two-dimensional plane as shown in Figure 8 (a), an arbitrary feature point is selected, the nearest feature point to the feature point is calculated, and the two feature points are connected, and the step is repeated until all the feature points are connected, as shown in Figure 8 (b), three adjacent feature points are selected as moving targets from the connecting line, and the process is repeated until all the feature points are selected, as shown in Figure 8 (c), the Nearest Neighbor Search is used to plan the motion trajectory of the test platform, so that the ranging of all the feature points can be completed with the least plane movement, and when the test platform reaches the moving target, the automatic rotating shell and the position of the magnetic attraction base of each laser device are adjusted to align the feature points;

[0041] Step five, after the measurement trajectory planned in step four is executed, RANSAC is used for surface fitting; the algorithm uses the three-dimensional space information of the collected multiple ranging points to construct a smooth three-dimensional model of the measured object;

[0042] Step six, the test and modeling results are fed back to the user through the wireless / wired communication mode.

[0043] The above-described embodiments are merely examples of the present application, and do not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation obtained by using the contents of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.​

Claims

1. A laser range finder device, characterized by: The application relates to a distance measuring device, which comprises a base assembly, a support assembly arranged on the base assembly and a distance measuring assembly arranged on the support assembly, wherein the distance measuring assembly is arranged above the base assembly; the base assembly comprises a base, a main body frame and a power supply and control module arranged on the base, a test platform support structure, a test platform support structure and a test platform; the test platform support structure is arranged on the main body frame and can move left and right; the test platform support structure is arranged on the test platform support structure and can move forward and backward; the power supply and control module is connected with the main body frame and the support assembly.

2. The laser ranging device of claim 1, wherein: The distance measuring assembly comprises a distance measuring platform main body shell, a top cover, a camera, a magnetic base and a laser distance measuring sensor; the laser distance measuring sensor is connected with the magnetic base and is arranged on the bottom side of the distance measuring platform main body shell through the magnetic base; and the camera is arranged on the bottom of the distance measuring platform main body shell.

3. The laser ranging device of claim 2, wherein: The laser distance measuring sensor and the magnetic base are both provided with contact interfaces, and the contact interfaces arranged on the laser distance measuring sensor and the magnetic base are arranged oppositely.

4. The laser ranging device of claim 2, wherein: The bottom side of the distance measuring platform main body shell is provided with a plurality of grooves, the magnetic base is arranged on the bottom side of the distance measuring platform main body shell through the grooves, the magnetic base is provided with fixing plates on the two sides, the inner side of the groove is provided with a fixing plate groove corresponding to the fixing plate, and the magnetic base is fixed on the bottom side of the distance measuring platform main body shell through cooperation of the fixing plate and the fixing plate groove.

5. The laser ranging device of claim 4, wherein: The number of the grooves arranged on the bottom side of the distance measuring platform main body shell is not more than three.

6. The laser ranging device of claim 1, wherein: The two sides of the main body frame connected with the test platform support structure are both provided with a group of sliding rails, and the two ends of the test platform support structure are respectively arranged on the two groups of sliding rails to realize left and right movement on the main body frame.

7. The laser ranging device of claim 1, wherein: The two sides of the test platform support structure connected with the test platform support structure are both provided with a group of guide rail grooves, and the two sides of the test platform support structure are respectively arranged on the two groups of guide rail grooves to realize forward and backward movement on the test platform support structure.

8. The laser ranging device of claim 2, wherein: The support assembly comprises a support body, a lifting piece and an I-shaped guide rail, the lifting piece is arranged on the I-shaped guide rail, the top of the lifting piece is connected with the distance measuring platform main body shell, the base is connected with the bottom side of the lifting piece, and the two sides of the power supply and control module are respectively connected with the main body frame and the support body.

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