Three-dimensional scanner based on reverse reconstruction technology

Abstract

The utility model discloses a three-dimensional scanner based on a reverse reconstruction technology. The three-dimensional scanner comprises a base. An image acquisition module and a turntable module are arranged on the base; the image acquisition module comprises a longitudinal displacement assembly and a camera; the camera is arranged on the longitudinal displacement assembly; and the rotary table module is arranged opposite to the camera. According to the utility model, the image acquisition module and the rotary table module are arranged, so that all-directional and automatic three-dimensional scanning of an object is realized, the scanning efficiency and accuracy are improved, and the working stability of the equipment is high.

Description

Technical Field

[0001] The utility model relates to the technical field of scanning devices, in particular to a three-dimensional scanner based on reverse reconstruction technology. Background Technique

[0002] A three-dimensional scanner is a scientific instrument used to detect and analyze the shape (geometric structure) and appearance data (such as properties like color, surface albedo, etc.) of objects or environments in the real world. The collected data is often used for three-dimensional reconstruction calculations to create digital models of actual objects in a virtual world.

[0003] Currently, the three-dimensional scanners on the market are mainly handheld laser scanners, which can only be manually collected, and are prone to unstable scanning and incomplete scanning. Most existing automatic scanning solutions use a three-dimensional scanner to collect data on existing parts or products, convert the collected data into point cloud data, and then use reverse modeling software to reconstruct the three-dimensional model of the part to generate the required three-dimensional model file, or design a simple turntable for rotary photography, and then use the photo information collected at each angle for reverse modeling and algorithms, or horizontal collection. However, the designs of the above turntables do not have integrity, the operation is unstable, and the positions of the turntable and the three-dimensional scanner need to be continuously changed every time the collected object is replaced, which is not convenient and intelligent enough. At the same time, the laser collection device used cannot be replaced, increasing the cost of the three-dimensional scanner. Therefore, in view of the above problems and technical requirements, it is necessary to improve the existing three-dimensional scanner. Content of the Utility Model

[0004] The purpose of the utility model is to provide a three-dimensional scanner based on reverse reconstruction technology, which realizes the automation of three-dimensional scanning of objects and improves the comprehensiveness, stability and efficiency of three-dimensional scanning.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A three-dimensional scanner based on reverse reconstruction technology includes a base; an image acquisition module and a turntable module are provided on the base; the image acquisition module includes a longitudinal displacement component and a camera; the camera is provided on the longitudinal displacement component; the turntable module is disposed opposite to the camera.

[0007] An object is placed on the turntable module, the longitudinal displacement component is used to drive the camera to move up and down, and the turntable module is used to adjust the angle of the object to comprehensively scan the object for data collection. The camera model is selected according to needs as long as it can achieve data collection.

[0008] Further, the turntable module includes a turntable support base, a horizontal rotation assembly, and a vertical rotation assembly; the horizontal rotation assembly and the vertical rotation assembly are respectively arranged on the turntable support base. The turntable support base is used to fix the horizontal rotation assembly and the vertical rotation assembly.

[0009] Further, the horizontal rotation assembly includes a first motor, a turntable base, and a first transmission shaft; the vertical rotation assembly includes a second motor, a vertical rotation base, and a second transmission shaft; the turntable base is arranged above the vertical rotation base. An object is placed on the turntable base of the turntable module. The first motor is used to drive the turntable base to rotate horizontally, and the second motor is used to drive the vertical rotation base to rotate vertically, thereby driving the turntable base to rotate vertically to comprehensively scan the object.

[0010] Further, the turntable base is connected to the first transmission shaft; a first pulley is respectively arranged at the output end of the first motor and one end of the first transmission shaft; the first pulleys are connected by a first belt; the vertical rotation base is connected to the second transmission shaft; a second pulley is respectively arranged at the output end of the second motor and one end of the second transmission shaft; the second pulleys are connected by a second belt.

[0011] Further, the first transmission shaft passes through the vertical rotation base and is connected to the vertical rotation base. The second motor drives the vertical rotation base to rotate vertically, and the vertical rotation base is connected to the turntable base through the first transmission shaft, realizing the full-range adjustment of the turntable base horizontally and vertically, which is convenient for comprehensively scanning the object.

[0012] Further, the longitudinal displacement assembly includes a mounting frame, a slide rail, and a ball screw; the slide rail is arranged on the mounting frame; the ball screw is arranged on the mounting frame through a bearing seat; a third motor is arranged at the input end of the ball screw. The bearing seat is used to fix the ball screw, and the third motor drives the ball screw to drive the camera to move up and down.

[0013] Further, a camera fixing seat is arranged on the nut of the ball screw; the camera fixing seat is connected to the slider of the slide rail. The ball screw is used to drive the camera fixing seat to move up and down, thereby driving the camera to move up and down, making the object scanning more comprehensive. The camera fixing seat is connected to the slide rail through the slider to improve the stability of the camera displacement.

[0014] Further, a camera is arranged on the camera fixing seat. The camera fixing seat is used to fix the camera.

[0015] Preferably, a fill light is arranged at the upper end of the longitudinal displacement assembly. The fill light is used for filling light to avoid deviation of the scanning result caused by poor external light.

[0016] Preferably, a jaw is provided on the turntable module. The jaw is an existing product used to fix an object to prevent displacement of the object during angle adjustment of the turntable module, which may cause errors in scanning. In actual application, latex glue or lac glue can also be used to bond the object to the turntable base, as long as the fixation of the object can be achieved.

[0017] As a matter of common sense, the present utility model further includes a power supply, wires, and a controller. The controller is a conventional controller, such as a programmable logic controller or a single-chip microcomputer controller, etc., which can be achieved through conventional programming. The specific connection method is conventional technology, as long as it can control each module or component of the three-dimensional scanner to achieve automatic adjustment and acquisition.

[0018] Due to the application of the above technical solutions, the beneficial effects of the present utility model compared with the prior art are as follows: First, by setting up an image acquisition module and a turntable module, the present utility model realizes the automation of three-dimensional scanning of an object and improves the efficiency of three-dimensional scanning of the object; Second, the turntable module is driven by a dual motor, realizing the omnidirectional rotation and attitude adjustment of the turntable base, with strong stability and comprehensive data acquisition; Third, the camera can be selected according to needs, which is more flexible than the single mode of laser acquisition equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the three-dimensional scanner based on the reverse reconstruction technology in Embodiment 1.

[0020] Figure 2 It is a side view of the three-dimensional scanner based on the reverse reconstruction technology in Embodiment 1.

[0021] Figure 3 It is a front view of the three-dimensional scanner based on the reverse reconstruction technology in Embodiment 1.

[0022] Figure 4 It is a top view of the three-dimensional scanner based on the reverse reconstruction technology in Embodiment 1.

[0023] Figure 5 It is a three-dimensional structure schematic diagram of the image acquisition module in Embodiment 1.

[0024] Figure 6 It is a front view of the turntable module in Embodiment 1.

[0025] Figure 7 It is a three-dimensional structure schematic diagram of the turntable module in Embodiment 1.

[0026] Among them: base 1, image acquisition module 2, turntable module 3, fill light 4, longitudinal displacement component 201, camera 202, turntable support base 301, horizontal rotation component 302, vertical rotation component 303, mounting bracket 2011, slide rail 2012, ball screw 2013, bearing block 2014, third motor 2015, camera fixing seat 2016, mounting seat 2017, first motor 3021, turntable base 3022, first transmission shaft 3023, first pulley 3024, first belt 3025, second motor 3031, vertical rotation base 3032, second transmission shaft 3033, second pulley 3034, second belt 3035. Detailed implementation mode

[0027] The following further describes the present utility model in conjunction with the accompanying drawings and preferred embodiments. The specific components involved are existing products, and the connections between specific components, as well as the usage methods including processing methods and control methods, are conventional technologies. In the embodiment, the camera selects ESP32-CAM to scan an object for data collection; the motor selects a Nema23 stepper motor. Both ESP32-CAM and Nema23 stepper motor are existing products, and the specific connection methods and usage methods are existing technologies, which do not affect the realization of the technical effects of the present utility model.

[0028] The terms "first", "second", "third", etc. in the specification and claims of the present utility model or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. Embodiment 1

[0029] As Figures 1 to 7 shown:

[0030] A three-dimensional scanner based on reverse reconstruction technology includes a base 1; an image acquisition module 2 and a turntable module 3 are provided on the base; the image acquisition module includes a longitudinal displacement component 201 and a camera 202; the camera is arranged on the longitudinal displacement component; the turntable module is arranged opposite to the camera.

[0031] The turntable module includes a turntable support base 301, a horizontal rotation component 302 and a vertical rotation component 303; the horizontal rotation component and the vertical rotation component are respectively arranged on the turntable support base. The horizontal rotation component and the vertical rotation component are respectively arranged on both side edges of the turntable support base.

[0032] The horizontal rotation assembly includes a first motor 3021, a turntable base 3022, and a first transmission shaft 3023; the turntable base is connected to the first transmission shaft; the first motor is fixed to one side of the turntable support through a motor support seat, and there is an opening on the side of the turntable support that fixes the first motor. A first pulley 3024 is provided at the output end of the first motor and one end of the first transmission shaft respectively; the first pulleys are connected by a first belt 3025, and the first belt passes through the opening. The opening is designed not to affect the operation of the vertical rotation assembly driving the turntable base, realizing the horizontal and vertical rotation of the turntable base to facilitate the all-round scanning of an object.

[0033] The vertical rotation assembly includes a second motor 3031, a vertical rotation base 3032, and a second transmission shaft 3033; the vertical rotation base is connected to the second transmission shaft; the second motor is fixed to the other side of the turntable support through a motor support seat, and a second pulley 3034 is provided at the output end of the second motor and one end of the second transmission shaft respectively; the second pulleys are connected by a second belt 3035.

[0034] The turntable base is arranged above the vertical rotation base, and the first transmission shaft passes through the vertical rotation base and is connected to the vertical rotation base. The first motor drives the turntable base to rotate horizontally, and the second motor drives the vertical rotation base to rotate vertically. The vertical rotation base is connected to the turntable base through a transmission shaft, thereby driving the turntable base to achieve vertical rotation to realize the all-round adjustment of the turntable base.

[0035] The longitudinal displacement assembly includes a mounting bracket 2011, a slide rail 2012, and a ball screw 2013; the slide rail is arranged on the mounting bracket; the ball screw is arranged on the mounting bracket through a bearing seat 2014; a third motor 2015 is provided at the input end of the ball screw, and the ball screw is connected to the third motor through a coupling; a camera fixing seat 2016 is provided on the nut of the ball screw, and the two are connected through a mounting seat 2017; the camera fixing seat is connected to the slider of the slide rail; a camera is provided on the camera fixing seat. The mounting bracket is made of slide rail-mounted aluminum (existing product) for fixing the slide rail and the ball screw. The third motor drives the ball screw to move up and down, and the slide rail ensures the stability of the displacement to prevent the camera from shaking and affecting the accuracy of the acquired scanning data.

[0036] A supplementary light 4 is provided at the upper end of the longitudinal displacement assembly and is installed on the bearing seat at the upper end of the longitudinal displacement assembly. The supplementary light is used for supplementary lighting to avoid deviation of the scanning result when the external light is poor.

[0037] As common knowledge, this embodiment also includes a power supply, wires, and a controller. The controller is a conventional controller, such as a programmable logic controller or a single-chip microcomputer controller, etc., which can be realized through conventional programming. The specific connection method is a conventional technology, as long as it can control each module or component of the 3D scanner to achieve automatic adjustment and acquisition.

[0038] The main working process of the three-dimensional scanner based on the reverse reconstruction technology of the present utility model is as follows:

[0039] (1) Place the object to be measured on the turntable base and turn on the fill light;

[0040] (2) Start the third motor to drive the camera to move up and down;

[0041] (3) After one side of the object is scanned, the first motor drives the turntable base to rotate horizontally, and repeat step (2);

[0042] (4) After all sides of the object are scanned, the second motor drives the turntable base to rotate vertically, and repeat step (2) to complete the three-dimensional scanning of the object. Embodiment 2

[0043] On the basis of Embodiment 1, the difference in this embodiment is that a clamping jaw is provided on the turntable module and installed on the turntable base of the turntable module. The clamping jaw is an existing product, and the specific shape and installation method of the clamping jaw are conventional technologies, as long as it can fix the object to prevent the object from shifting during the angle adjustment of the turntable module, resulting in scanning errors.

[0044] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several variations and improvements can also be made, which should also be regarded as belonging to the protection scope of the present utility model.

Claims

1. A three-dimensional scanner based on reverse reconstruction technology, characterized in that: It comprises a base; an image acquisition module and a turntable module are arranged on the base; the image acquisition module comprises a longitudinal displacement component and a camera; the camera is arranged on the longitudinal displacement component; the turntable module is arranged opposite to the camera; the turntable module comprises a turntable support seat, a horizontal rotation component and a vertical rotation component; the horizontal rotation component and the vertical rotation component are respectively arranged on the turntable support seat; the horizontal rotation component comprises a first motor, a turntable base and a first transmission shaft; the vertical rotation component comprises a second motor, a vertical rotation base and a second transmission shaft; the turntable base is arranged above the vertical rotation base; the longitudinal displacement component comprises a mounting frame, a slide rail and a ball screw; the slide rail is arranged on the mounting frame; the ball screw is arranged on the mounting frame through a bearing seat; a third motor is arranged at the input end of the ball screw.

2. The three-dimensional scanner based on the inverse reconstruction technology according to claim 1, characterized in that: The turntable base is connected to the first transmission shaft; the output end of the first motor and one end of the first transmission shaft are respectively provided with a first pulley; the first pulley is connected through a first belt; the vertical rotating base is connected to the second transmission shaft; the output end of the second motor and one end of the second transmission shaft are respectively provided with a second pulley; the second pulley is connected through a second belt.

3. The three-dimensional scanner based on the reverse reconstruction technology according to claim 2, characterized in that: The first transmission shaft passes through the vertical rotating base and is connected to the vertical rotating base.

4. The three-dimensional scanner based on the inverse reconstruction technology according to claim 1, characterized in that: A camera fixing seat is arranged on the nut of the ball screw; the camera fixing seat is connected with the sliding block of the sliding rail.

5. The three-dimensional scanner based on the reverse reconstruction technology according to claim 4, characterized in that: The camera fixing seat is provided with a camera.

6. The three-dimensional scanner based on the inverse reconstruction technology according to claim 1, characterized in that: A fill light is provided at the upper end of the longitudinal displacement component.

7. The three-dimensional scanner based on the inverse reconstruction technology according to claim 1, characterized in that: The turntable module is provided with clamping claws.

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