A three-dimensional scanning system

Abstract

The utility model discloses a three -dimensional scanning system. The system includes at least one projector and at least one scanner, the projector includes light source, first synchronous circuit module and control circuit module, and the light source projects the characteristic image of first wave band to the scanned object, and the characteristic image includes a plurality of key features, first synchronous circuit module and control circuit module communication connection, the scanner includes first image acquisition module and second synchronous circuit module, and the object image of scanned object that first image acquisition module gathers includes the key features, and second synchronous circuit module emits configuration instruction, and control circuit module controls the working condition of light source according to the configuration instruction received by first synchronous circuit module. The utility model embodiment prolongs the service life of light source in projector, reduces the working energy consumption of three -dimensional scanning system, and has improved the stability of system.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional scanning technology, and in particular to a three-dimensional scanning system. Background Technology

[0002] A 3D scanning device is a device that can quickly acquire the 3D spatial coordinates and surface morphology data of a scanned object. Its core principle is to use optical, laser, structured light and other technologies to scan and measure the surface of the object, and transform the physical entity into an editable and analyzable digital 3D model.

[0003] In 3D scanning technology, optical point projectors are used to provide a "coordinate reference" for the scanning device, facilitating the stitching of scanned images and models. In existing technologies, optical point projectors are generally kept constantly lit during operation.

[0004] The drawback of existing technologies is that the optical projector heats up due to constant illumination, causing the projected shape to become blurry or out of focus. This application solves the problems of short light source lifespan and severe heat generation caused by constant illumination of the projector by setting a synchronous working mode. Utility Model Content

[0005] This utility model provides a three-dimensional scanning system to solve the problems of short lifespan of the light source in the projector and severe heat generation during use due to the projector being constantly lit.

[0006] This utility model provides a three-dimensional scanning system, including at least one projector and at least one scanner;

[0007] The projector includes a light source, a first synchronization circuit module, and a control circuit module. The light source projects a feature image of the first band onto the object being scanned. The feature image includes multiple key features. The first synchronization circuit module and the control circuit module are communicatively connected.

[0008] The scanner includes a first image acquisition module and a second synchronization circuit module. The object image acquired by the first image acquisition module includes key features.

[0009] The second synchronization circuit module transmits configuration commands, and the control circuit module controls the working state of the light source according to the configuration commands received by the first synchronization circuit module.

[0010] Optionally, configuration commands can be used to control the light source to turn on for a set duration and then turn it off.

[0011] Optionally, the duration can be set to a preset fixed duration;

[0012] Alternatively, the duration can be determined by the duration information in the configuration command.

[0013] Optionally, at the moment the first image acquisition module starts exposure, the second synchronization circuit module sends a configuration command.

[0014] Optionally, the first synchronization circuit module and the second synchronization circuit module are wirelessly connected.

[0015] Optionally, the light source includes a laser; the projector also includes a laser driver circuit module and a power management circuit module, the power management circuit module being electrically connected to the laser driver circuit module; the laser driver circuit module being electrically connected to the laser and the control circuit module, the control circuit module controlling the voltage and / or current of the laser driver circuit module driving the light source according to the configuration instructions, and controlling the working state of the laser.

[0016] And / or, the scanner also includes a second image acquisition module and a projection module, wherein the projection module emits a second-band scanning light to the object being scanned, and the second image acquisition module acquires the second-band scanning light reflected by the object being scanned; wherein the first band and the second band may be the same or different.

[0017] Optionally, the projector also includes a battery that powers at least one of the light source, the first synchronization circuit module, and the control circuit module.

[0018] This utility model discloses a three-dimensional scanning system. The system includes at least one projector and at least one scanner. The projector includes a light source, a first synchronization circuit module, and a control circuit module. The light source projects a feature image of a first wavelength band onto the object being scanned. The feature image includes multiple key features. The first synchronization circuit module and the control circuit module are communicatively connected. The scanner includes a first image acquisition module and a second synchronization circuit module. The object image acquired by the first image acquisition module includes the key features. The second synchronization circuit module transmits configuration commands, and the control circuit module controls the operating state of the light source according to the configuration commands received by the first synchronization circuit module. This utility model embodiment extends the lifespan of the light source in the projector, reduces the energy consumption of the three-dimensional scanning system, and improves the system's stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a three-dimensional scanning system provided in an embodiment of the present invention;

[0020] Figure 2 This is a flowchart of a three-dimensional scanning method provided in an embodiment of the present invention;

[0021] Figure 3 This is a flowchart of another three-dimensional scanning method provided in an embodiment of the present invention. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] Figure 1 This is a schematic diagram of the structure of a three-dimensional scanning system provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the system includes at least one projector 100 and at least one scanner 200.

[0024] The projector 100 can be understood as a device in a 3D scanning system responsible for projecting a specific band feature image onto the object being scanned; the scanner 200 can be understood as a device in a 3D scanning system responsible for acquiring the object being scanned and the feature image projected onto the object.

[0025] The projector 100 includes a light source 110, a first synchronization circuit module 120, and a control circuit module 130. The light source 110 projects a feature image of the first band onto the object being scanned. The feature image includes multiple key features. The first synchronization circuit module 120 and the control circuit module 130 are communicatively connected.

[0026] Here, the light source 110 can be understood as a component in the projector that generates and emits light to form a first-band feature image, such as a laser; the first synchronization circuit module 120 can be understood as a circuit module that receives signals from the scanner 200 and communicates with the control circuit module 130 to realize the system synchronization function; the control circuit module 130 can be understood as a circuit module that controls the working state of the light source 110 (such as on, off, power adjustment, etc.); the first band can be understood as a specific frequency or wavelength range corresponding to the light emitted by the light source; the feature image can be understood as a patterned image projected by the light source 110, which carries information for three-dimensional scanning and recognition; the key feature can be understood as a key identifier or pattern element in the feature image used to determine the three-dimensional information of the scanned object, such as a dot or a cross shape.

[0027] The scanner 200 includes a first image acquisition module 210 and a second synchronization circuit module 220. The object image acquired by the first image acquisition module 210 includes key features. In some embodiments, the object image acquired by the first image acquisition module 210 may also include surface features of the scanned object itself. The second synchronization circuit module 220 transmits configuration commands, and the control circuit module 130 controls the operating state of the light source 110 according to the configuration commands received by the first synchronization circuit module 120.

[0028] The first image acquisition module 210 can be understood as a component in the scanner 200 used to capture the image of the object projected onto the scanned object, such as an image sensor; the second synchronization circuit module 220 can be understood as a circuit module in the scanner 200 used to send synchronization signals and configuration instructions to the projector 100 to coordinate the working rhythm of the projector and the scanner; the configuration instructions can be understood as control signals sent by the scanner 200 to the projector 100 to control the working state of the light source 110 (such as setting parameters such as on-time, power, etc.); the object image can be understood as a two-dimensional graphic including the scanned object and the key features falling on it, such as a photograph or its feature extraction image.

[0029] Specifically, during actual operation, the second synchronization circuit module 220 of the scanner 200 transmits a configuration command, which is transmitted wirelessly or via a wired connection to the first synchronization circuit module 120 of the projector 100. The first synchronization circuit module 120 then transmits the received configuration command to the control circuit module 130. The control circuit module 130, according to the command, controls the operating state of the light source 110, controlling at least one of the following: the on / off time, or the on / off duration of the light source 110. For example, it controls the light source 110 to be on for a set duration and then off. During the on / off period of the light source 110, it emits a first-band feature image that is projected onto the scanned object. At this time, the first image acquisition module 210 of the scanner 200 simultaneously acquires the object image information of the scanned object, which includes the scanned object and the key features falling on it.

[0030] For example, in a 3D inspection scenario of a large workpiece, one scanner and multiple projectors are used, with the projectors positioned at different locations on the workpiece. During scanning, the scanner acts as the master synchronizing device, wirelessly sending configuration commands to the projectors. Simultaneously, the projectors project preset feature images (such as random speckle patterns) onto the workpiece surface according to the received configuration commands. The scanner captures images in sync with the illumination time of the light source in the projectors, acquiring 2D images of the object's surface location from different viewpoints. After scanning, the feature images projected by the projectors are used as stitching reference points to stitch the image data from different locations, generating a complete 3D model of the workpiece.

[0031] The technical solution of this utility model embodiment realizes three-dimensional scanning function through the coordinated operation of projector 100 and scanner 200. The light source 110 of projector 100 projects a feature image of the first band onto the scanned object. The first synchronization circuit module 120 is communicatively connected to the control circuit module 130, and can receive configuration commands from scanner 200 and control the working state of light source 110. The first image acquisition module 210 of scanner 200 acquires image information of the scanned object containing the feature image. The second synchronization circuit module 220 sends configuration commands to projector 100. The control circuit module 130 of projector 100 controls light source 110 to project the feature image according to the commands, while the first image acquisition module 210 of scanner 200 simultaneously acquires relevant image information. During the scanning process, the signal interaction between scanner 200 and projector 100 realizes the linkage control of feature image projection and image information acquisition, ensuring that light source 110 is lit only as needed during image acquisition. This changes the continuous lighting mode of the light source in traditional systems, extends the lifespan of the light source, reduces the overall energy consumption of the system, and thus improves the stability of the system.

[0032] In an optional embodiment, a configuration command controls the light source to be turned on for a set duration and then turned off.

[0033] The set duration can be understood as the time the light source is turned on. The set duration can be a preset time based on the device's working environment, or it can be manually set by the user.

[0034] Specifically, the configuration instructions include a light source turn-on time parameter, which can be set according to scanning requirements to ensure that the light source 110 is lit only as needed before and after image acquisition.

[0035] For example, in the default operating mode, the duration of each projection by the projector's light source is set to 1 millisecond. When the scanner is ready to acquire an image, it sends a configuration command with a specified on-time (e.g., 1ms) to the projector before image acquisition; upon receiving the command, the projector drives the light source to illuminate and maintain it for 1ms, then automatically turns it off.

[0036] This embodiment of the invention reduces system power consumption, minimizes heat accumulation in the light source, and extends the lifespan of the laser by controlling the light source to be on for a set duration, while ensuring complete coverage of the feature image during the scanning process. This provides a reliable guarantee for long-term continuous scanning operations.

[0037] In an optional embodiment, the duration is set to a preset fixed duration.

[0038] The preset fixed duration can be understood as the duration of each projection by the projector's light source in the default working mode, such as 1 millisecond.

[0039] In fixed-duration mode, the light source will automatically maintain a preset fixed illumination time after each trigger command from the scanner, and then immediately turn off. This mode is suitable for scenarios with stable scanning environments and uniform requirements for the light source's operating time, such as batch scanning of regular objects.

[0040] This utility model embodiment uses a fixed duration mode to drive the light source with standardized preset parameters, ensuring high-speed operation of the equipment during batch scanning and improving the efficiency of the production line.

[0041] In an optional embodiment, the set duration is determined by the duration information in the configuration instructions.

[0042] The duration information can be understood as the duration of light projection in the projector, which is set by the user based on the current work requirements or preset in the projector.

[0043] Specifically, the scanner can determine the duration information in the configuration command based on real-time scanning needs, carrying duration parameters (such as 0.5 milliseconds, 2 milliseconds, etc.) in the command. When the projector receives the command, it drives the light source to complete the on / off operation according to the duration information, thereby improving the system's adaptability to diverse scanning scenarios. For example, when scanning highly reflective or small-structured objects, the scanner can shorten the duration to 0.5 milliseconds to avoid overexposure; while when scanning large objects with complex textures, the duration can be extended to 2 milliseconds to enhance the acquisition quality of feature images.

[0044] This utility model embodiment increases accuracy requirements by using a custom duration mode, allowing users to dynamically adjust the light source activation time according to the material, size, surface features, etc. of the scanned object, thereby achieving high-precision differentiated scanning.

[0045] In an optional embodiment, at the moment the first image acquisition module starts exposure, the second synchronization circuit module sends a configuration command.

[0046] Specifically, before the first image acquisition module 210 acquires the image of the object projected onto the scanned object, it first performs an exposure. Simultaneously with the exposure, the second synchronization circuit module 220 sends a configuration command to the projector 100. After receiving the command, the first synchronization circuit module 120 of the projector 100 transmits it to the control circuit module 130. The control circuit module 130 drives the light source 110 to project the feature image of the first band onto the scanned object within the exposure time.

[0047] This embodiment of the invention uses an exposure signal as the trigger source for command transmission, thereby achieving synchronous operation of light source projection and camera sensing, ensuring that the characteristic image of the first band (such as random speckle) is accurately projected onto the surface of the scanned object within the entire exposure time window.

[0048] In an optional embodiment, the first synchronization circuit module and the second synchronization circuit module are wirelessly connected.

[0049] Specifically, the first synchronization circuit module 120 and the second synchronization circuit module 220 can interact with each other via various wireless communication methods such as Bluetooth, NFC, and QR codes.

[0050] For example, when using Bluetooth and NFC connections, after pre-pairing, the scanner 200 can automatically connect simply by bringing it close to the projector 100. When using QR code connections, the scanner 200 also has a built-in scanning program, and the image acquisition module is also used to scan the QR code on the projector 100 for pairing, and communication is established after pairing is complete.

[0051] It should be noted that during the communication connection between the first synchronization circuit module 120 and the second synchronization circuit module 220, timing alignment must be ensured, and the overall system synchronization deviation must be controlled within 20 microseconds.

[0052] This embodiment of the utility model ensures that the scanner 200 and the projector 100 maintain timing consistency through wireless communication, providing an underlying guarantee for high-precision data acquisition in the 3D scanning system.

[0053] In an optional embodiment, the light source 110 includes a laser 111; the projector 100 further includes a laser driving circuit module 140 and a power management circuit module 150, the power management circuit module 150 being electrically connected to the laser driving circuit module 140; the laser driving circuit module 140 being electrically connected to the laser 111 and a control circuit module 130, the control circuit module 130 controlling the voltage and / or current of the laser driving circuit module 140 driving the light source 110 according to configuration instructions, and controlling the operating state of the laser 111;

[0054] And / or, the scanner 200 also includes a second image acquisition module 230 and a projection module 240, wherein the projection module 240 emits a second-band scanning light to the object being scanned, and the second image acquisition module 230 acquires the second-band scanning light reflected by the object being scanned; wherein the first band and the second band may be the same or different.

[0055] Among them, laser 111 can be understood as a light-emitting element used to emit a laser beam with a specific wavelength; laser driving circuit module 140 can be understood as a circuit module used to convert the electrical signal output by the control circuit module into a current or voltage signal to drive the laser; power management circuit module 150 can be understood as a circuit module that provides power to laser driving circuit module 140; second image acquisition module 230 can be understood as a hardware component similar to first image acquisition module 210 used to acquire second-band optical signals; projection module 240 can be understood as a module in scanner 200 used to emit second-band scanning light, which is used to provide reference information for object depth measurement.

[0056] Specifically, during the scanning process, the scanner 200 can send a configuration command to the control circuit module 130 through the second synchronization circuit module 220. The laser drive circuit module 140 drives the laser 111 to emit a laser beam toward the object being scanned according to the command, projecting the characteristic image of the first band (such as random speckle) onto the surface of the object.

[0057] After the laser 111 is turned on, the projection module 240 of the scanner 200 synchronously emits the second-band scanning light to the object being scanned, and the second image acquisition module 230 acquires image data containing the second-band scanning light reflected by the object, ensuring the coordinated acquisition and time synchronization of the dual-band light signals.

[0058] For example, if the first band and the second band are different (e.g., laser 111 emits red speckle light in the first band, and projection module 240 emits blue stripe light in the second band), the first band light is used as a stitching reference to provide stable feature reference points for multi-view images. The second band light is used to provide stripe information for phase calculation. The second image acquisition module 230 (equipped with a blue light filter) synchronously acquires the second band stripe image, forming data complementarity with the first band image of the first image acquisition module 210. Using the red speckle light as a stitching reference point, the image data from different orientations are stitched together to generate a complete three-dimensional model of the workpiece.

[0059] This embodiment of the invention achieves multi-dimensional information acquisition and depth feature extraction of the scanned object through dual-band scanning, thereby improving the accuracy, efficiency and scene adaptability of 3D scanning.

[0060] In an alternative embodiment, the projector further includes a battery 160 that powers at least one of the light source 110, the first synchronization circuit module 120, and the control circuit module 130.

[0061] Among them, battery 160 can be understood as an independent power supply unit for a portable projector 100;

[0062] Specifically, battery 160 uses power management circuit module 150 to distribute power to multiple components, providing power to all components such as light source 110, first synchronization circuit module 120, and control circuit module 130 in a power-free environment. It also provides auxiliary power when an external power source is connected, ensuring stable power supply. For example, when an external power supply voltage fluctuation is detected, power management circuit module 150 automatically switches to battery power mode to prevent voltage surges from damaging the circuit.

[0063] This embodiment of the invention uses an independent battery as a power supply unit, which not only ensures power supply stability but also enables the device to adapt to environments without power.

[0064] Figure 2 This is a flowchart of a three-dimensional scanning method provided by an embodiment of the present invention. The above control method is applicable to, for example, Figure 1 The 3D scanning system shown. (As shown) Figure 2 As shown, the method includes:

[0065] S110, the second synchronization circuit module in the control scanner transmits configuration commands.

[0066] Specifically, after starting the scanning process, the scanner's control module first generates configuration instructions (including parameters such as light source on-time and light intensity) based on the scanning task parameters (such as object material and surface characteristics), and then sends the instructions wirelessly to the projector through the second synchronization circuit module.

[0067] S120. According to the configuration instruction received by the first synchronization circuit module in the projector, the control circuit module in the projector controls the working state of the light source in the projector.

[0068] Specifically, after receiving the configuration command, the first synchronization circuit module of the projector parses and verifies the configuration command, and transmits the duration information therein to the control circuit module. Based on the duration information, the control circuit module sends corresponding drive commands to the drive circuit module to control the working state of the light source.

[0069] For example, before the first image acquisition module starts exposure, the control circuit module sends an "on" command, which controls the light source to turn on and then turns it off after a certain period of time, ensuring that the light source is in working condition throughout the exposure process.

[0070] S130, The first image acquisition module in the control scanner acquires an object image of the scanned object, including key features.

[0071] Specifically, the scanner's control module sends configuration commands while simultaneously controlling the first image acquisition module to enter the exposure preparation state. After a brief delay, i.e., after the light source projects a feature image onto the object surface according to the configuration commands, the first image acquisition module acquires the object image projected onto the scanned object. If the object image is a photograph of the workpiece under test, and its key feature is random speckle, then the random speckle adheres to the surface of the workpiece under test, becoming identifiable markers in the image.

[0072] The technical solution of this embodiment controls the second synchronization circuit module in the scanner to transmit configuration commands, achieving timing synchronization between the scanner and the projector. Based on the configuration commands received by the first synchronization circuit module in the projector, the control circuit module in the projector controls the working state of the light source, ensuring that the light source is illuminated only as needed during the effective image acquisition time. The first image acquisition module in the scanner acquires the object image projected onto the scanned object, capturing images containing key features to prepare for further processing. This technical solution extends the lifespan of the projector light source, reduces the energy consumption of the 3D scanning system, and improves system stability.

[0073] In an optional embodiment, a configuration command controls the light source to be turned on for a set duration and then turned off.

[0074] Specifically, the configuration instructions include a light source on-time parameter, which can be set according to scanning requirements to ensure that the light source is lit only as needed before and after image acquisition.

[0075] Furthermore, in an optional embodiment, the duration is set to a preset fixed duration.

[0076] Alternatively, the duration can be determined by the duration information in the configuration command.

[0077] Specifically, the light source setting duration supports two configuration modes: preset fixed duration and dynamic command.

[0078] In fixed-duration mode, when the scanner's second synchronization circuit module sends a trigger command, the command carries a pre-configured fixed-duration parameter. Upon receiving the command, the projector's control circuit module immediately drives the light source to illuminate and triggers a timer. After the fixed duration ends, the control circuit module automatically cuts off the power supply to the light source, completing a single projection cycle. This mode is suitable for scenarios with stable scanning environments and uniform requirements for light source operating time, such as batch scanning of regular objects.

[0079] In custom duration mode, users can set the duration information in the configuration command according to their real-time scanning needs, including the duration parameter in the command. For example, when scanning highly reflective or small-structured objects, the scanner can shorten the duration to 0.5 milliseconds to avoid overexposure; while when scanning large objects with complex textures, the duration can be extended to 2 milliseconds to enhance the acquisition quality of feature images. After receiving the command, the projector drives the light source to complete the on / off operation according to the duration information, thereby improving the system's adaptability to diverse scanning scenarios.

[0080] In an optional embodiment, prior to "S110, controlling the second synchronization circuit module in the scanner to transmit configuration commands" in the above embodiment, the following is also included:

[0081] S101. Pair and connect the first synchronization circuit module with the second synchronization circuit module.

[0082] Specifically, before the scanner officially begins operation, the user needs to confirm how many projectors are included in the current scanning control system. Furthermore, the first synchronization circuit module needs to be paired and connected with the second synchronization circuit module of each projector in the system to ensure that the projector can correctly receive configuration commands when the second synchronization circuit module in the scanner transmits configuration commands.

[0083] For example, when using Bluetooth and NFC connections, pairing can be performed in various ways, including but not limited to exchanging device IDs and completing an encrypted handshake. When using QR code connections, the scanner also has a built-in scanning program, and the image acquisition module is also used to scan the QR code on the projector for pairing, thereby completing the communication connection.

[0084] Figure 3 This is a flowchart of another three-dimensional scanning method provided by an embodiment of this utility model. (Continue referring to...) Figure 1 The 3D scanning system shown. (As shown) Figure 3 As shown, this embodiment of the utility model is an optimization of the above embodiment. Specifically, before "S110, controlling the second synchronization circuit module in the scanner to transmit configuration commands" in the above embodiment, it also includes:

[0085] Obtain the exposure command to enable exposure from the first image acquisition module;

[0086] The second synchronization circuit module in the scanner is controlled to transmit configuration commands, including:

[0087] Based on the exposure command, the second synchronization circuit module in the scanner is controlled to transmit configuration commands.

[0088] For details not covered in this embodiment, please refer to the previous embodiment.

[0089] like Figure 3As shown, another 3D scanning method may include the following specific steps:

[0090] S210. Obtain the exposure command to enable exposure from the first image acquisition module.

[0091] The exposure command can be understood as a control signal used to put the first image acquisition module into the exposure state, which includes parameters such as exposure time, gain value, and frame rate.

[0092] Specifically, when the first image acquisition module receives an external scanning start signal, it generates an exposure command based on preset exposure parameters to control the exposure lamp on the scanner to perform exposure.

[0093] For example, the exposure command may include an exposure delay to ensure that the first synchronization circuit module receives the configuration command and turns on the projector light source before the exposure begins. This exposure delay can be set according to the actual startup delay of the projector light source, thereby ensuring that the system synchronization deviation is within 20µs.

[0094] S220. According to the exposure command, control the second synchronization circuit module in the scanner to send configuration commands.

[0095] Specifically, the exposure command is also sent to the second synchronization circuit module. When the second synchronization circuit module receives the exposure command, it sends a configuration command to the first synchronization circuit module.

[0096] S230. According to the configuration instruction received by the first synchronization circuit module in the projector, the control circuit module in the projector controls the working state of the light source in the projector.

[0097] S240, The first image acquisition module in the control scanner acquires an object image of the scanned object, including key features.

[0098] Based on the above embodiments, this utility model embodiment further discloses the working process of the three-dimensional scanning system during the image acquisition process, including the exposure process. The method described in this utility model embodiment ensures the timing synchronization between the light source projection and the camera exposure process, reduces the system synchronization deviation, and improves the system reliability.

[0099] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A three-dimensional scanning system, characterized in that, Includes at least one projector and at least one scanner; The projector includes a light source, a first synchronization circuit module, and a control circuit module. The light source projects a feature image of a first band onto the scanned object. The feature image includes multiple key features. The first synchronization circuit module and the control circuit module are communicatively connected. The scanner includes a first image acquisition module and a second synchronization circuit module. The object image of the scanned object acquired by the first image acquisition module includes the key features. The second synchronization circuit module transmits a configuration command, and the control circuit module controls the working state of the light source according to the configuration command received by the first synchronization circuit module.

2. The three-dimensional scanning system according to claim 1, characterized in that, The configuration command controls the light source to be turned on for a set time and then turned off.

3. The three-dimensional scanning system according to claim 2, characterized in that, The set duration is a preset fixed duration.

4. The three-dimensional scanning system according to claim 2, characterized in that, The set duration is determined by the duration information in the configuration instruction.

5. The three-dimensional scanning system according to claim 1, characterized in that, At the moment when the first image acquisition module starts exposure, the second synchronization circuit module sends out a configuration command.

6. The three-dimensional scanning system according to claim 1, characterized in that, The first synchronization circuit module and the second synchronization circuit module are wirelessly connected.

7. The three-dimensional scanning system according to claim 1, characterized in that, The light source includes a laser; the projector further includes a laser driving circuit module and a power management circuit module, the power management circuit module being electrically connected to the laser driving circuit module; the laser driving circuit module being electrically connected to the laser and the control circuit module, the control circuit module controlling the voltage and / or current of the laser driving circuit module driving the light source according to the configuration instructions, and controlling the working state of the laser; And / or, the scanner further includes a second image acquisition module and a projection module, wherein the projection module emits a second-band scanning light to the object being scanned, and the second image acquisition module acquires the second-band scanning light reflected by the object being scanned; wherein the first band and the second band may be the same or different.

8. The three-dimensional scanning system according to claim 1, characterized in that, The projector also includes a battery that powers at least one of the light source, the first synchronization circuit module, and the control circuit module.

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