Rotary positioning device and three-dimensional scanning equipment

Abstract

The utility model provides a rotary positioning device and three-dimensional scanning equipment. The rotary positioning device comprises a rotary support, an optical measurement assembly and a control assembly. An optical measurement assembly is arranged on the rotary support and is used for driving the optical measurement assembly to rotate; the optical measurement assembly comprises a positioning coding piece, a light emitter and a light absorber; the light emitter and the light absorber are arranged on the two opposite sides of the positioning encoding part, the light emitter is used for emitting light, and the light absorber is used for collecting information of the quantity of light passing through the positioning encoding part; the control assembly is electrically connected with the light emitter and the light absorber and used for controlling the light emitter to emit light and receiving light quantity information output by the light absorber. According to the rotary positioning device, the control assembly can control the light emitting device to emit light, light emitted by the light emitting device returns to the light absorber after passing through the positioning encoding part, and whether the positioning encoding part is deformed or not is judged according to light quantity information collected by the light absorber, namely the number of absorbed light sources, so that self-inspection is achieved, the use precision of the rotary positioning device is ensured, and use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation positioning devices, in particular to a rotation positioning device and three-dimensional scanning equipment. Background Art

[0002] At present, when scanning and measuring the object to be measured, in order to improve the scanning accuracy and efficiency, a positioning device is needed to provide positioning information. However, the existing positioning device cannot measure its own accuracy and cannot guarantee its own accuracy, which will lead to low scanning accuracy and efficiency and cannot meet the use requirements. Utility Model Content

[0003] The utility model provides a rotation positioning device and a three-dimensional scanning device to solve the problem that the existing rotation positioning device cannot self-measure the accuracy and cannot guarantee its own accuracy.

[0004] A rotary positioning device comprises a rotary support, an optical measuring component and a control component;

[0005] The optical measuring component is arranged on the rotating support, and the rotating support is used to drive the optical measuring component to rotate;

[0006] The optical measurement component includes a positioning coding element, a light emitter and a light absorber;

[0007] The light emitter and the light absorber are arranged on opposite sides of the positioning code member, the light emitter is used to emit light, and the light absorber is used to collect information on the amount of light passing through the positioning code member;

[0008] The control component is electrically connected to the light emitter and the light absorber, and is used to control the light emitter to emit light and receive the light quantity information output by the light absorber.

[0009] Preferably, a plurality of grating channels are arranged at intervals in the positioning coding member.

[0010] Preferably, the rotating support comprises a magnetic seat and a rotating shaft;

[0011] One end of the rotating shaft is rotatably mounted on the magnetic seat along the axial direction of the rotating shaft, and the optical detection component is mounted on the other end of the rotating shaft;

[0012] The control assembly is mounted on the rotating shaft.

[0013] Preferably, the central axis of the optical measurement component coincides with the central axis of the magnetic base and the central axis of the rotating shaft.

[0014] Preferably, the magnetic seat is a hollow magnetic seat, and the power supply device is placed in the hollow magnetic seat;

[0015] The rotating shaft is a hollow rotating shaft, the control component is arranged in the hollow rotating shaft, and is electrically connected to the power supply device and the optical measurement component respectively.

[0016] Preferably, the control component includes a control chip and a communication module;

[0017] The control chip is electrically connected to the light emitter and the light absorber, and is used to control the light emitter to emit light and receive light quantity information output by the light absorber;

[0018] The communication module is connected to the control chip and is used to send the light quantity information to an external device.

[0019] Preferably, the control component further comprises a positioning module connected to the control chip, and the positioning module is used to collect position information of the rotation positioning device;

[0020] The communication module is also used to send the location information to an external device.

[0021] Preferably, the control component further includes a touch display screen connected to the control chip.

[0022] A three-dimensional scanning device, comprising a scanning device and at least three of the above-mentioned rotation positioning devices;

[0023] At least three of the rotation positioning devices are placed at intervals on the object to be measured to determine the target area;

[0024] The scanning device is used to scan the target area and output a scanned image.

[0025] Preferably, the three-dimensional scanning device further comprises a computing device, and the computing device communicates with the rotation positioning device and the scanning device.

[0026] The rotary positioning device provided in the embodiment of the utility model is used to provide position information for scanning the measured object, and has a self-checking function. It specifically comprises a rotary support, an optical measurement component and a control component. When installed, the rotary support is placed on the measured object, and the optical measurement component is installed on the rotary support. The rotary support can drive the optical measurement component to rotate, and the orientation position of the optical measurement component can be adjusted. Without changing the coordinate position of the optical measurement component, it can be used in conjunction with the optical measurement component of the rotary positioning device in different orientations to expand the application range of the optical measurement component. The optical measurement component includes a positioning coding component, a light emitter and a light absorber; during installation, the light emitter and the light absorber are arranged on opposite sides of the positioning coding component, and the control component is electrically connected to the light emitter and the light absorber to control the light emitter to emit light and the light absorber to collect light quantity information passing through the positioning coding component; when it is necessary to control the rotary positioning device to perform self-inspection, for example, when receiving a self-inspection signal triggered by the self-inspection switch of the rotary positioning device, the control component can control the light emitter to emit light, and the light emitted by the light emitter passes through the positioning coding component and returns to the light absorber. According to the light quantity information collected by the light absorber, that is, the amount of light source absorbed, it is determined whether the positioning coding component is deformed, etc., thereby realizing self-inspection, ensuring the use accuracy of the rotary positioning device, and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is an isometric view of a rotary positioning device in one embodiment of the utility model;

[0029] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0030] Figure 3 It is an interconnection diagram of a three-dimensional scanning device in one embodiment of the utility model;

[0031] Figure 4 This is a working principle diagram of a three-dimensional scanning device in one embodiment of the utility model;

[0032] Figure 5 It is an application diagram of a three-dimensional scanning device in one embodiment of the utility model.

[0033] Among them, 1. rotating support; 11. magnetic seat; 12. rotating axis; 2. optical measurement component; 21. positioning encoder; 22. light emitter; 23. light absorber; 3. control component; 31. control chip; 32. communication module; 33. touch screen; 4. grating channel; 5. scanning device. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships 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 a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0037] The utility model embodiment provides a rotation positioning device, referring to Figure 1 The rotary positioning device includes a rotary support 1, a light measuring component 2 and a control component 3; the rotary support 1 is provided with a light measuring component 2, and the rotary support 1 is used to drive the light measuring component 2 to rotate; the light measuring component 2 includes a positioning coding component 21, a light emitter 22 and a light absorber 23; the light emitter 22 and the light absorber 23 are arranged on opposite sides of the positioning coding component 21, the light emitter 22 is used to emit light, and the light absorber 23 is used to collect light quantity information passing through the positioning coding component 21; the control component 3 is electrically connected to the light emitter 22 and the light absorber 23, and is used to control the light emitter 22 to emit light and receive the light quantity information output by the light absorber 23.

[0038] As an example, the rotary positioning device is used to provide position information for scanning the object to be measured, and has a self-detection function; it specifically includes a rotary support 1, an optical measurement component 2 and a control component 3; when installing, the rotary support 1 is placed on the object to be measured, and the optical measurement component 2 is installed on the rotary support 1. The rotary support 1 can drive the optical measurement component 2 to rotate, and the orientation position of the optical measurement component 2 can be adjusted. Without changing the coordinate position of the optical measurement component 2, it can be used in conjunction with the optical measurement component 2 of the rotary positioning device in different orientations to expand the application range of the optical measurement component 2. The optical measurement component 2 includes a positioning coder 21, a light emitter 22 and a light absorber 23; during installation, the light emitter 22 and the light absorber 23 are arranged on opposite sides of the positioning coder 21, and the control component 3 is electrically connected to the light emitter 22 and the light absorber 23 to control the light emitter 22 to emit light and to control the light absorber 23 to collect light quantity information passing through the positioning coder 21; when it is necessary to control the rotation positioning device to perform self-inspection, for example, when receiving a self-inspection signal triggered by the self-inspection switch of the rotation positioning device, the control component 3 can control the light emitter 22 to emit light, and the light emitted by the light emitter 22 passes through the positioning coder 21 and returns to the light absorber 23. According to the light quantity information collected by the light absorber 23, that is, the amount of light source absorbed, it is determined whether the positioning coder 21 is deformed, etc., thereby realizing self-inspection, ensuring the use accuracy of the rotation positioning device, and meeting the use requirements.

[0039] In one embodiment, referring to Figure 2 A plurality of grating channels 4 are arranged at intervals in the positioning coder 21 .

[0040] As an example, a plurality of grating channels 4 are provided in the positioning code member 21, and the plurality of grating channels 4 are arranged at intervals; when light passes through the positioning code member 21, the light quantity information passing through each grating channel 4 will be collected by the light absorber 23, and the light quantity information of different grating channels 4 collected by the light absorber 23 is used to determine whether the positioning code member 21 is deformed, thereby realizing self-checking. For example, when the light quantity information passing through the plurality of grating channels 4 is the same, it is concluded that the positioning code member 21 is not deformed; when the light quantity information of any grating channel 4 is different from the light quantity information of other grating channels 4, it is concluded that the positioning code member 21 is deformed.

[0041] In one embodiment, referring to Figure 1 The rotating support 1 includes a magnetic seat 11 and a rotating shaft 12; one end of the rotating shaft 12 is mounted on the magnetic seat 11 along the axial direction of the rotating shaft 12, and the optical measuring component 2 is mounted on the other end of the rotating shaft 12; the control component 3 is mounted on the rotating shaft 12.

[0042] As an example, the rotating support 1 includes a magnetic base 11 and a rotating shaft 12; when installing, the magnetic base 11 is placed on the object to be measured, and then one end of the rotating shaft 12 is installed on the magnetic base 11 by rotating along the axial direction of the rotating shaft 12, and the optical measuring component 2 is installed on the other end of the rotating shaft 12. In this way, the rotating shaft 12 can be rotated 360° in the magnetic base 11, and the orientation position of the optical measuring component 2 can be adjusted. Without changing the coordinate position of the optical measuring component 2, it can be used in conjunction with the optical measuring component 2 of the rotating positioning device in different orientations to expand the application range of the optical measuring component 2. The control component 3 is installed on the rotating shaft 12, so that the control component 3 can control the light emitter 22 to emit light, and the light passes through the positioning code 21 and returns to the light absorber 23. According to the light quantity information collected by the light absorber 23, that is, the amount of light source absorbed, it is judged whether the positioning code 21 is deformed, etc., thereby realizing self-inspection, ensuring the use accuracy of the rotating positioning device, and meeting the use requirements.

[0043] In one embodiment, referring to Figure 1 , the central axis of the optical measuring component 2, the central axis of the magnetic base 11 and the central axis of the rotating shaft 12 coincide with each other.

[0044] As an example, the central axis of the optical measurement component 2 (i.e., the central axis of the grating channel 4) coincides with the central axis of the magnetic base 11 and the central axis of the rotating shaft 12. In this way, the optical measurement component 2 can rotate arbitrarily around the axial direction of the rotating shaft 12 with the rotating shaft 12 to keep the coordinates unchanged, thereby ensuring its own usage accuracy.

[0045] In one embodiment, referring to Figure 1 The magnetic seat 11 is a hollow magnetic seat, and the power supply device is placed inside the hollow magnetic seat; the rotating shaft 12 is a hollow rotating shaft, and the control component 3 is arranged in the hollow rotating shaft and is electrically connected to the power supply device and the optical measurement component 2 respectively.

[0046] As an example, the magnetic seat 11 is a hollow magnetic seat, and a power supply device is placed inside the hollow magnetic seat; the rotating shaft 12 is a hollow rotating shaft, and the control component 3 is arranged inside the hollow rotating shaft, and is electrically connected to the power supply device and the optical measurement component 2 respectively. In this way, the power supply device is arranged to provide power to the control component 3, and then the control component 3 controls the operation of the optical measurement component 2, so as to facilitate the self-inspection of the rotating positioning device.

[0047] In one embodiment, referring to Figure 1 The control component 3 includes a control chip 31 and a communication module 32; the control chip 31 is electrically connected to the light emitter 22 and the light absorber 23, and is used to control the light emitter 22 to emit light and receive the light quantity information output by the light absorber 23; the communication module 32 is connected to the control chip 31, and is used to send the light quantity information to an external device.

[0048] As an example, the control component 3 includes a control chip 31 and a communication module 32; when installed, the control chip 31 is electrically connected to the light emitter 22 and the light absorber 23, the light emitter 22 is controlled to emit light, and the light absorber 23 is controlled to collect the light quantity information passing through the positioning code 21; in this way, the self-test switch of the rotation positioning device is set to turn on, the light emitter 22 emits light through the positioning code 21, and returns to the light absorber 23, the communication module 32 is connected to the control chip 31, and is used to send light quantity information to an external device, and according to the light quantity information collected by the light absorber 23, that is, the amount of light source absorbed, it is judged whether the positioning code 21 is deformed, etc., so as to realize self-test, ensure the use accuracy of the rotation positioning device, and meet the use requirements. Among them, the communication module 32 is any one of Bluetooth, ZIG, NPC, WIFI, 3G module, 4G module and 5G module, which can be selected according to actual conditions, so as to improve the applicability of the equipment.

[0049] In one embodiment, referring to Figure 1 The control component 3 also includes a positioning module connected to the control chip 31, and the positioning module is used to collect the position information of the rotation positioning device; the communication module 32 is also used to send the position information to the external device.

[0050] As an example, the control component 3 also includes a positioning module. When installed, the positioning module is connected to the control chip 31 to collect the position information of the rotation positioning device; then the position information is sent to an external device through the communication module 32 to realize the positioning of the rotation positioning device.

[0051] In one embodiment, referring to Figure 1 The control component 3 also includes a touch display screen 33 connected to the control chip 31.

[0052] As an example, the control component 3 also includes a touch screen 33 connected to the control chip 31. When in use, people can control the control chip 31 by clicking the function buttons on the touch screen 33 to improve work efficiency.

[0053] The utility model embodiment provides a three-dimensional scanning device, referring to Figure 3 and Figure 4 , including a scanning device 5 and at least three rotating positioning devices; at least three rotating positioning devices are placed on the object to be measured at intervals to determine the target area; the scanning device 5 is used to scan the target area.

[0054] As an example, the three-dimensional scanning device includes a scanning device 5 and at least three rotation positioning devices; during installation, at least three rotation positioning devices are first placed on the object to be measured at intervals, and then the self-test switch is turned on, the light emitter 22 and the light absorber 23 are arranged on opposite sides of the positioning code 21, and the control component 3 is electrically connected to the light emitter 22 and the light absorber 23 to control the light emitter 22 to emit light and control the light absorber 23 to collect light quantity information passing through the positioning code 21; in this way, the self-test switch of the rotation positioning device is turned on, and the light emitter 22 emits light through the positioning code 21 and returns to the light absorber 23. According to the light quantity information collected by the light absorber 23, that is, the amount of light source absorbed, it is judged whether the positioning code 21 is deformed, etc., thereby realizing self-inspection, ensuring the use accuracy of the rotation positioning device, and meeting the use requirements.

[0055] Then turn on the communication module 32 (such as Bluetooth), the positioning module collects the position information of the rotation positioning device, and then sends the position information to the external device through the communication module 32 to realize the positioning of the rotation positioning device. Specifically, a position sensor is provided in the rotation positioning device, which can measure the center position of the rotation positioning device in cooperation with the external device (not affected by temperature and humidity, with guaranteed accuracy, as a standard position); any two rotation positioning devices are interconnected, and the spatial positions are confirmed by each other through the communication module 32. The actual distance between the two rotation positioning devices and the specific position on the measured object can be calculated through the external device to provide a positioning ruler; at least three rotation positioning devices are coordinated, which is equivalent to providing multiple virtual rulers to determine the target area in order to achieve accurate positioning; and the center position of each rotation positioning device is transmitted to the computing device. It is only necessary to ensure that there are three rotation positioning devices in the target area to use the scanning device 5 to scan the target area and perform a three-dimensional scan of the measured object.

[0056] In this example, the communication module 32 of the rotary positioning device is used to communicate with other encoding points and scanning software, and the center position of the rotary positioning device is transmitted to the computer. Then, any two rotary positioning devices are interconnected, and the spatial positions are mutually confirmed by the communication module 32. The actual distance between the two rotary positioning devices and the specific position on the measured object can be calculated by an external device to provide a positioning scale; a sufficient number of rotary positioning devices are arranged on the measured object, and the two rotary positioning devices are connected by the communication module 32, so that multiple virtual scales can be provided to locate the position of the measured object without taking pictures or recording points, thereby eliminating the error accumulation of taking pictures or recording points, and the accuracy is not affected by the environment, temperature and humidity. The virtual scale replaces the physical scale, further improving the measurement accuracy. In addition, the optical measurement component 2 in the rotary positioning device can be rotated 360 degrees by the rotating support 1 without changing the coordinate value, so that it is easy to switch the direction of the optical measurement component 2 in the rotary positioning device, so that it can cooperate with the optical measurement components 2 of different rotary positioning devices to form target areas at different positions; in this way, the scanning device 5 can scan freely at any position on the measured object, and does not need to be spliced ​​in the same coordinate.

[0057] The 3D scanning equipment in this example has higher measurement accuracy, wider range, and effectively improved efficiency. It can be used in large-scale, multi-shaped reverse benchmarking scanning, such as flying cars. By improving R&D capabilities and product quality, it has brought significant benefits in terms of precise quality control, shortened R&D cycles, and improved market reputation.

[0058] For example, in the whole vehicle / large item scanning and measurement process, in order to ensure accuracy, it is first necessary to take photos or record the three-dimensional coordinate points. In the process of taking photos, coding points and rulers are also needed. Each photo contains at least three coding points. The whole vehicle scanning requires multiple pairs of splicing, resulting in reduced accuracy. Secondly, due to the small turning corners of the vehicle, the shooting angle and distance are limited, and a large number of coding points need to be arranged (because some corners are too small, the body can not be transitioned even if more coding points are arranged, and auxiliary settings are required), and multiple photos and additional coding points are required, resulting in low scanning and measurement efficiency, loss of accuracy, and limited range. In order to reduce accumulated errors, a ruler is also needed to balance the errors. The ruler will also reduce accuracy due to workmanship, temperature and humidity, and the length of the ruler will also be limited, resulting in reduced accuracy when scanning large spaces or objects. In order to ensure the same coordinates during the scanning process, it is often necessary to add unnecessary transition points for spatial linking and splicing when scanning features at multiple locations, resulting in reduced accuracy and waste.

[0059] Reference Figure 5In this example, the rotary positioning device is placed on the surface of the vehicle, the positioning module collects the position information of the rotary positioning device, and then sends the position information to the external device through the communication module 32 to realize the positioning of the rotary positioning device. The specific rotary positioning device is equipped with a position sensor, which can measure the center position of the rotary positioning device in cooperation with the external device (not affected by temperature and humidity, with guaranteed accuracy, as a standard position); any two rotary positioning devices are interconnected, and the spatial positions are confirmed by the communication module 32. The actual distance between the two rotary positioning devices and the specific position on the measured object can be calculated by the external device to provide a positioning scale. The distance between the two rotary positioning devices is equivalent to a virtual scale, and is not affected by the environment, temperature and humidity, and can achieve accurate positioning. Then, the center position of each rotary positioning device is transmitted to the computing device. Because there are three rotary positioning devices under each scan, three or more rotary positioning devices can be arranged on the vehicle; no transition points and splicing are required, and any position can be scanned and ensured to be in the same coordinate. The rotary positioning device can also self-check to ensure its own accuracy. At the same time, when the corner position is small, it can also rotate 360 ​​degrees. In this way, the target area at different positions can be determined without changing the coordinate value, thereby improving the measurement accuracy and efficiency, ensuring the quality of scanning measurement, and solving the above-mentioned shortcomings well.

[0060] In one embodiment, the three-dimensional scanning device further includes a computing device, which communicates with the rotation positioning device and the scanning device 5 .

[0061] As an example, the three-dimensional scanning device also includes a computing device, which communicates with the rotation positioning device and the scanning device; when in use, the positioning module in the rotation positioning device collects the position information of the rotation positioning device, and then sends the position information to the computing device through the communication module 32 to realize the positioning of the rotation positioning device. Specifically, a position sensor is provided in the rotation positioning device, which can measure the center position of the rotation positioning device in cooperation with the computing device (not affected by temperature and humidity, with guaranteed accuracy, as a standard position); any two rotation positioning devices are interconnected, and the spatial positions are mutually confirmed by the communication module 32. The actual distance between the two rotation positioning devices and the specific position on the measured object can be calculated by the computing device to provide a positioning ruler; at least three rotation positioning devices are used to cooperate, which is equivalent to providing multiple virtual rulers to determine the target area in order to achieve accurate positioning; and the center position of each rotation positioning device is transmitted to the computing device. It is only necessary to ensure that there are three rotation positioning devices in the target area to use the scanning device 5 to scan the target area and perform a three-dimensional scan on the measured object.

[0062] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A rotary positioning device, characterized in that: It includes a rotating support, an optical measuring component and a control component; The optical measuring component is arranged on the rotating support, and the rotating support is used to drive the optical measuring component to rotate; The optical measurement component includes a positioning coding element, a light emitter and a light absorber; The light emitter and the light absorber are arranged on opposite sides of the positioning code member, the light emitter is used to emit light, and the light absorber is used to collect information on the amount of light passing through the positioning code member; The control component is electrically connected to the light emitter and the light absorber, and is used to control the light emitter to emit light and receive the light quantity information output by the light absorber.

2. The rotary positioning device according to claim 1, characterized in that: A plurality of grating channels are arranged at intervals in the positioning coding member.

3. The rotary positioning device according to claim 1, characterized in that: The rotating support comprises a magnetic seat and a rotating shaft; One end of the rotating shaft is rotatably mounted on the magnetic seat along the axial direction of the rotating shaft, and the optical detection component is mounted on the other end of the rotating shaft; The control assembly is mounted on the rotating shaft.

4. The rotary positioning device according to claim 3, characterized in that: The central axis of the optical measuring component coincides with the central axis of the magnetic base and the central axis of the rotating shaft.

5. The rotary positioning device according to claim 3, characterized in that: The magnetic seat is a hollow magnetic seat, and the power supply equipment is placed in the hollow magnetic seat; The rotating shaft is a hollow rotating shaft, the control component is arranged in the hollow rotating shaft, and is electrically connected to the power supply device and the optical measurement component respectively.

6. The rotary positioning device according to claim 1, characterized in that: The control component includes a control chip and a communication module; The control chip is electrically connected to the light emitter and the light absorber, and is used to control the light emitter to emit light and receive the light quantity information output by the light absorber; The communication module is connected to the control chip and is used to send the light quantity information to an external device.

7. The rotary positioning device according to claim 6, characterized in that: The control component further comprises a positioning module connected to the control chip, and the positioning module is used to collect position information of the rotation positioning device; The communication module is also used to send the location information to an external device.

8. The rotary positioning device according to claim 6, characterized in that: The control component also includes a touch display screen connected to the control chip.

9. A three-dimensional scanning device, characterized in that: comprising a scanning device and at least three rotation positioning devices according to any one of claims 1 to 8; At least three of the rotation positioning devices are placed on the object to be measured at intervals to determine the target area; The scanning device is used to scan the target area and output a scanned image.

10. The three-dimensional scanning device according to claim 9, characterized in that: The three-dimensional scanning device also includes a computing device, which communicates with the rotation positioning device and the scanning device.

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