Intelligent multi-code collaborative recognition platform

Abstract

The invention discloses an intelligent multi-code collaborative recognition platform which comprises a rotating platform, a plurality of workpiece fixing assemblies, an adjusting mechanism, a code scanning module and a control system. The rotating platform rotates in an intermittent mode, and the workpiece fixing assemblies are arranged along the circumference and used for fixing a to-be-recognized object. The adjusting mechanism is arranged below the platform, after the platform stops, the contact identification position clamp is lifted, position correction is completed, and then the adjusting mechanism retracts for avoiding. The code scanning module comprises a two-dimensional code recognition module and a dot matrix code recognition module which are arranged above and below the platform and are respectively adapted to collection of images of different code systems. And the control system coordinates the rotation of the platform, adjusts the action and image acquisition sequence, and processes the identification data to realize uploading and traceability. The platform is suitable for parallel recognition of various bar codes, and the recognition precision and stability of high-reflection and irregular code surfaces are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial vision recognition devices, and in particular, to an intelligent multi-code collaborative recognition platform. Background Art

[0002] In modern electronics manufacturing, especially in the assembly process of mobile phones and their components, with the continuous acceleration of the production rhythm and the improvement of the demand for refined quality management, the traceability management of components has become one of the key links in the construction of intelligent factories. To achieve the traceability functions of component source control, assembly process recording, and after-sales maintenance, manufacturing enterprises usually set multiple barcodes on various components, including two-dimensional barcodes (such as QRCode, DataMatrix) and dot matrix codes (a kind of CNC two-dimensional dot matrix identification), etc. These codes are often distributed at different positions and angles of the components, and there are even cases where multiple codes coexist, resulting in a complex recognition environment. Correspondingly, higher requirements are put forward for the barcode scanning devices on the production site. They not only need to have the capabilities of fast recognition, multi-code compatibility, and high recognition rate, but also need to adapt to the industrial deployment environment with a compact structure, limited space, and variable working conditions.

[0003] Currently, the common barcode scanning methods in the industry include: manual recognition using a handheld barcode scanner, arranging fixed barcode scanning cameras under the conveyor line, combined recognition of multi-angle industrial camera arrays, or flexible recognition through a robotic arm coordinated with a vision system, etc. These solutions are respectively reflected in patents such as CN109015358A, CN113255080A, CN112386285A, etc. Although the above solutions have a certain adaptability in specific scenarios, they generally have the following problems: the system structure is complex, the device volume is large, the deployment cost is high, the recognition efficiency is difficult to meet the requirements of high-tempo production lines, and most solutions only adapt to a single barcode type and are difficult to meet the mixed recognition requirements of two-dimensional barcodes and dot matrix codes. In addition, when facing complex component surfaces such as curved surfaces, reflective surfaces, and metal materials, the existing light source design is difficult to suppress the interference of halos and reflections, resulting in an increase in the recognition failure rate, and the fixture structure also lacks adaptability and dynamic adjustment capabilities, affecting the barcode scanning accuracy and system reliability.

[0004] Therefore, there is an urgent need for a multi-code automatic recognition platform that can realize batch clamping of multiple components, compatible recognition of two-dimensional barcodes and dot matrix codes, dynamic adjustment of fixtures, and optimized control of recognition light sources in an industrial environment with limited space, so as to effectively improve the recognition efficiency and system adaptability. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide an intelligent multi-code collaborative recognition platform, which includes: A rotating platform for carrying a plurality of objects to be identified, the rotating platform rotating intermittently along a preset axis; A plurality of workpiece fixing components are arranged on the rotating platform for respectively fixing the objects to be identified; An adjusting mechanism is arranged below the rotating platform. After the rotating platform stops, it contacts the workpiece fixing component at the identification position and performs a position correction action, and completes a retraction operation before the rotating platform receives the next rotation control instruction to prevent structural interference with other workpiece fixing components in the rotation path; At least one code scanning module is arranged above and / or below the rotating platform for collecting two-dimensional code and / or dot matrix code images on the objects to be identified; A control system is used to control the intermittent rotation of the rotating platform, control the lifting action of the adjusting mechanism and the image acquisition timing of the code scanning module, and coordinate the operation sequence of the above components.

[0006] In some embodiments, the workpiece fixing components are arranged on the rotating platform in a circumferential array or an approximate circumferential array manner to realize multi-station uniform arrangement and identification operations with consistent beats.

[0007] In some embodiments, the adjusting mechanism is a structurally independent lifting and adjusting unit, including an actuator that can expand and contract in the vertical direction, rising and contacting the workpiece fixing component at the identification position to perform position correction, and automatically retracting to an avoidance position before rotation.

[0008] In some embodiments, the lifting and adjusting unit includes an electric cylinder, a cylinder or a guide rail module, wherein the electric cylinder or the cylinder is used for quickly responding to the lifting action and is suitable for the high-beat production line rhythm; a guide post or an adjusting contact part is arranged at its end for performing position correction on the workpiece fixing component before identification and retracting to the avoidance area before the rotation action.

[0009] In some embodiments, the code scanning module includes a two-dimensional code identification module and a dot matrix code identification module; the two-dimensional code identification module is arranged above the rotating platform and arranged downward for performing near-distance wide-angle identification on high-reflective materials; the dot matrix code identification module is arranged below the rotating platform and arranged upward, equipped with a long-focus lens and high-contrast lighting. The above two modules do not interfere with each other structurally and are respectively adapted to the differences in the requirements of different code systems for angles and light sources in function, constituting a cooperative identification structure.

[0010] In some embodiments, the two-dimensional code recognition module includes a camera, an annular light source, and a dome light source. The annular light source is disposed below the lens of the camera and arranged around its optical axis. The dome light source cover is disposed below the annular light source, forming a combined lighting system for providing a composite light field of edge enhancement and soft light diffuse reflection to reduce the interference caused by high-reflection materials to the two-dimensional code image acquisition and improve the recognition contrast and stability.

[0011] In some embodiments, the dot matrix code recognition module includes a long focal length image acquisition lens and an annular light source. The annular light source is disposed coaxially below the optical axis of the lens and arranged coaxially with the lens, for providing an annular illumination area with weak directivity and uniform illuminance to enhance the imaging contrast of the code surface boundary area, reduce the halo and reflection interference, and improve the recognition stability and recognition accuracy of the dot matrix code.

[0012] In some embodiments, the control system is used to control the lifting of the adjustment mechanism after the rotation platform stops, so that it contacts the workpiece fixing component at the current recognition position and performs position correction; Before the image acquisition is completed and the rotation start instruction is received, control the adjustment mechanism to retract to a preset avoidance position, to ensure that the adjustment mechanism does not interfere with other workpiece fixing components in the rotation path during rotation.

[0013] In some embodiments, the control system further includes an image processing and data management module for performing decoding, valid data screening, duplicate information elimination, and result fusion processing on the image data collected by the code scanning module, and uploading the recognized barcode information to an external traceability database or a product management system to realize the centralized management of multi-code recognition data and the association of traceability information.

[0014] In some embodiments, a positioning sensor and a material detection sensor are further included. The positioning sensor is used to detect whether the rotation platform is positioned, and the material detection sensor is used to detect whether the object to be recognized is located on the workpiece fixing component. The control system coordinates and controls the lifting action of the adjustment mechanism and the image acquisition timing of the code scanning module according to the feedback signals of the positioning sensor and the material detection sensor, so as to realize the synchronous linkage of platform rotation, fixture adjustment, and image acquisition actions, and improve the timing accuracy and operation stability of the recognition process.

[0015] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. It has the following beneficial effects: The present invention arranges a plurality of workpiece fixing components on the circumference of a rotating platform and controls the platform to rotate in an intermittent manner, enabling a plurality of workpieces to be identified to enter the identification position in sequence, thereby realizing batch identification of multiple workpieces in a limited space, improving the efficiency of the scanning cycle, and being applicable to a work station-intensive assembly scenario.

[0016] The adjusting mechanism arranged below the platform rises after the platform stops, contacts the fixture at the current identification position for position correction, and automatically retracts before the platform rotates, which can effectively avoid interference with other fixtures, improve the positioning accuracy of the bar code in the acquisition window at the same time, and reduce image deviation.

[0017] The scanning modules are arranged at different positions above and below the platform, and can collect bar code images in different orientations, enhancing the adaptability of the system to different code position layouts and improving the coverage of the acquisition range.

[0018] The control system conducts unified logical management on the execution sequences of the rotation, adjustment, and acquisition modules, enabling the system to still maintain coordinated actions under high-cycle operation, reducing the risk of abnormal triggering or identification interruption, and enhancing the stability of the system process.

[0019] In summary, on the basis of a compact structure, the platform of the present invention realizes an organic combination of multiple work stations, high adaptability, dynamic adjustment ability, and process controllability, and is applicable to a variety of industrial scanning and identification scenarios. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of an intelligent multi-code collaborative identification platform provided by the present invention; Figure 2 It is a schematic top view structural diagram of an intelligent multi-code collaborative identification platform provided by the present invention; Figure 3 It is an enlarged view of area A in 1; Figure 4 It is a schematic internal structural diagram of an intelligent multi-code collaborative identification platform provided by the present invention; Figure 5 For Figure 4 The enlarged view of area B in; Figure 6 It is a connection diagram of the control system and modules of the present invention.

[0022] Explanation of the Reference Numerals in the Drawings: 1. Rotating platform; 2. Workpiece fixing component; 3. Adjusting mechanism; 4. Actuator; 5. Guide post or adjusting contact part; 6. Scanning code module; 7. Two-dimensional code recognition module; 8. Dot matrix code recognition module; 9. Code reader; 10. Ring light source; 11. Dome light source; 12. Image acquisition lens; 13. Material sensor; 14. Positioning sensor; 15. Control system. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.

[0027] Figure 1 Schematic structural diagram of an intelligent multi-code collaborative recognition platform provided by the present invention; Figure 2 Top view structural diagram of an intelligent multi-code collaborative recognition platform provided by the present invention; Figure 3 Enlarged view of area A in 1; Figure 4 Internal structural diagram of an intelligent multi-code collaborative recognition platform provided by the present invention; Figure 5 For Figure 4 Enlarged view of area B in Figure 6 Connection diagram of the control system and modules of the present invention.

[0028] Next, refer to Figures 1-5 Describe in a possible implementation manner an intelligent multi-code collaborative recognition platform, including: a rotating platform 1 for carrying a plurality of objects to be recognized, and the rotating platform 1 rotates intermittently along a preset axis; a plurality of workpiece fixing components 2 are arranged on the rotating platform 1 for respectively fixing the objects to be recognized; an adjusting mechanism 3 is arranged below the rotating platform 1, contacts the workpiece fixing component 2 at the recognition position after the rotating platform 1 stops and performs a position correction action, and completes a retraction operation before the rotating platform 1 receives the next rotation control instruction to prevent structural interference with other workpiece fixing components 2 in the rotation path; at least one code scanning module 6 is arranged above and / or below the rotating platform 1 for collecting two-dimensional code and / or dot matrix code images on the objects to be recognized; a control system 15 is used to control the intermittent rotation of the rotating platform 1, control the lifting action of the adjusting mechanism 3 and the image acquisition timing of the code scanning module 6, and coordinate the operation sequence of the above components.

[0029] The rotating platform 1 is preferably made of aluminum alloy material, with a platform diameter of 600 mm, driven by a servo motor, and realizes intermittent rotation at equal intervals of angles (such as 30°) in combination with a precision indexing device, forming a multi-station structure. Each workpiece fixing component 2 is fixed on the platform surface by bolts, and cooperates with a customized slot fixture to adapt to the clamping requirements of products with different shapes, and is arranged in a circumferential equal division manner to ensure the balance of the beat of each station. The adjusting mechanism 3 is arranged directly below the rotating platform 1, connected to the equipment base through a guide rail module, and its driving unit is an electric cylinder with a stroke of 20 mm and a repeat positioning accuracy of ±0.1 mm. A spherical head guide post 5 is arranged at the end of the electric cylinder. After the rotating platform 1 completes the rotation positioning, the electric cylinder drives the guide post 5 to rise and contacts the limit groove on the workpiece fixing component 2 at the recognition position, so as to realize precise attitude fine adjustment. To ensure subsequent rotation safety, the adjusting mechanism 3 automatically retracts to the avoidance position before each image acquisition ends and receives the platform rotation instruction. The avoidance height is set to 30 mm from the bottom of the platform, and its retraction state is confirmed through a limit switch.

[0030] The code scanning module 6 includes two independent modules arranged above and below the platform. The upper one is the two-dimensional code recognition module 7, which is installed 200 mm above the platform through a height-adjustable bracket, and is configured with a wide-angle industrial camera, an annular light source 10 and a dome light source 11 for performing close-range shooting on the two-dimensional code on a highly reflective surface; the lower one is the dot matrix code recognition module 8, which is configured with a telephoto lens and a cold light annular lighting unit, arranged upward for capturing the dot matrix code image in a recessed or deep cavity area. Both the upper and lower code scanning modules 6 achieve flexible adjustment of the shooting height and angle through the Z-direction guide rail connection structure to meet the identification requirements of different products.

[0031] The control system 15 adopts a modular architecture, including a PLC control unit, an image processing module, a sensor interface module and a host computer communication module. The PLC control unit is used to output control signals to the rotary motor, the code scanning module 6 and the electric cylinder actuator 4, and receive the feedback signals from the positioning sensor 14 and the limit switch to realize the logical control of the platform positioning, adjustment and identification actions. The image processing module is responsible for receiving and analyzing the images collected by the code scanning module 6, performing code system identification and valid data screening processing, and uploading the identification results to an external database or a product management system through the communication module to realize data traceability and management.

[0032] The platform realizes multi-station synchronous processing through an accurate rotary mechanism. The adjustment mechanism 3 ensures that the fixture position is consistent during each identification, effectively improving the image acquisition accuracy and the identification success rate; the upper and lower code scanning modules 6 realize the collaborative acquisition of different code systems, adapting to the identification requirements of products with various materials and complex shapes. The control system 15 realizes the coordinated control of each module, and has flexible parameter setting and remote communication capabilities. Experimental verification shows that at a production line speed of 20 stations per minute, the code scanning and identification success rate of this platform can reach over 98%, and the image distortion rate is less than 2%, with stable industrial identification capabilities and good expansion adaptability.

[0033] Among them, the rotary platform 1 can also adopt an annular guide rail conveying structure to meet the layout requirements of large products; the workpiece fixing component 2 can be changed to a vacuum adsorption, flexible gripper or magnetic adsorption structure to improve the product adaptability; the adjustment mechanism 3 can select a cylinder or a servo module, and the guide end structure can be adjusted according to the contact surface shape of the identification object; the code scanning module 6 can be expanded into a multi-angle acquisition array structure, introducing an autofocus and regional edge enhancement algorithm module to optimize the image processing effect; the control system 15 can integrate an industrial vision platform or an AI recognition module, support data interaction with MES and ERP systems, and realize the automated operation of product identification, quality traceability and production line linkage control. The entire platform can also be batch-deployed or integrally transported through modular encapsulation to meet the identification requirements of different production lines.

[0034] Please refer to Figures 2-4In a possible implementation, the workpiece fixing assembly 2 is arranged on the rotating platform 1 in a circular array or a nearly circular array, so as to achieve uniform arrangement of multiple stations and recognition operations with consistent beats.

[0035] Specifically, the rotating platform 1 is a disc structure made of aluminum alloy, and its diameter is preferably 600mm. A spindle is provided at the center of the platform, and the spindle is connected to a servo motor and a divider to realize intermittent rotation of the platform along the central axis. In this embodiment, six workpiece fixing assemblies 2 are provided on the platform, and each workpiece fixing assembly 2 is arranged at equal angles along the circumferential direction, and the central angle between any two adjacent workpiece fixing assemblies 2 is 60°. Six mounting holes are provided on the circumferential edge of the platform, and the mounting holes are evenly arranged on a circle with a radius of 250mm and the center of the platform as the center. Each mounting hole is provided with a locating pin structure in cooperation with the fixture base, and the bottom surface of the fixture and the platform are provided with positioning hole grooves to realize rapid positioning and anti-rotation installation, and ensure installation accuracy and layout symmetry.

[0036] The workpiece fixing assembly 2 can adopt a slot-type clamp, a pneumatic clamp module or a magnetic fixing device to realize the universal clamping function of objects to be identified of different shapes and sizes. After each clamp is installed, the height of its upper surface is consistent with the reference plane of the rotating platform 1, so that the object to be identified is always in the predetermined identification focal plane of the code scanning module 6, ensuring the clarity and focus consistency of image acquisition.

[0037] The above arrangement structure ensures that after each rotation of the rotating platform 1, exactly one workpiece fixing component 2 is in the identification position, and the other five stations are in a transition state. The control system 15 can set a cyclic rhythm of rotation → stop → acquisition → start, with a typical acquisition waiting time of 0.3 seconds, which is used to buffer the residual vibration of the platform rotation and then trigger the scanning action, thereby improving image stability and recognition accuracy. Through this consistent arrangement and control logic, a continuous, efficient, and cyclic scanning and recognition process of 6 stations can be achieved, which is suitable for the recognition requirements of medium-speed production lines of 10 to 20 times per minute.

[0038] Through the above structure, the overall structure of the platform is symmetrical, which helps to maintain mass balance during rotation, reduce vibration and mechanical wear caused by eccentric loading, and improve platform operation stability and equipment life. The standardized equidistant layout is also conducive to the control system 15 using unified parameters in timing control, improving programming simplicity and troubleshooting efficiency.

[0039] It is worth noting that the number of workpiece fixing components 2 in the circular array can be flexibly adjusted according to the recognition efficiency and rhythm requirements, for example, it can be set to 4, 8 or 12 stations, and the control system 15 can set the rotation index value according to the corresponding angle to ensure the station alignment accuracy. In addition, in order to adapt to non-circular or special-shaped platform structures, an "approximate circular array" layout can also be adopted, such as arranging the workpiece fixing components 2 equivalently on the edge of an elliptical platform or a polygonal platform. This type of approximate array layout allows each fixture installation position to have an angular deviation of no more than ±3° from the ideal circular position. By compensating and correcting the scanning position through the control system 15, the rhythm consistency and recognition stability similar to the standard circular array can also be achieved, thereby improving the flexible adaptability of the system.

[0040] See also Figures 4-5 In a possible embodiment, the adjustment mechanism 3 is a structurally independent lifting and adjusting unit, which includes an actuator 4 that can be extended and retracted in the vertical direction. After the rotating platform 1 stops, it rises and contacts the workpiece fixing component 2 located at the identification position to perform a position correction action; before the platform performs the next rotation action, the actuator 4 retracts to an avoidance position outside the rotation path to prevent structural interference with other workpiece fixing components 2 in the rotation path.

[0041] The lifting and adjusting unit is installed on the equipment base below the rotating platform 1, and its structure is kept independently arranged from the rotating platform 1 to avoid synchronous interference during the rotation process. In this embodiment, the lifting and adjusting unit uses an electric cylinder as the main actuator. The electric cylinder is arranged in the vertical direction, and its cylinder body is fixed to the base structure through a mounting bracket. The piston rod extends vertically upward, and a guide contact component is connected to the end. The contact part is preferably a ball head guide column 5, or a rubber pad or an elastic contact block, and its shape should match the lower surface alignment contact structure of the workpiece fixing component 2 to ensure contact stability and correction accuracy.

[0042] In order to ensure the adaptability and repeatability of the lifting stroke, the effective telescopic stroke of the electric cylinder is 20mm to 40mm, and the repeatability of the piston rod is controlled within ±0.1mm to ensure the repeatability of each lifting contact position. In the actual operation process, when the rotating platform 1 completes an angle division and stops, the control system 15 starts the lifting action of the electric cylinder by outputting a lifting control signal, and the guide column 5 rises and contacts the set area at the bottom of the workpiece fixing component 2 at the current identification position. This contact action is usually a slight upward push to form a directional correction force to compensate for position inconsistency caused by fixture installation deviation, rotation jump or loose clamping.

[0043] After the contact positioning is completed, the control system 15 sequentially activates the barcode scanning module 6 to perform the image acquisition operation. After the image acquisition is completed and the control system 15 receives the "barcode scanning completed" feedback signal, the electric cylinder immediately executes the retraction action to retract the guide post 5 to a preset avoidance height outside the rotation path. This avoidance height is preferably set to a position not less than 30 mm from the bottom of the rotating platform 1, and the position state of the guide post 5 is monitored in real time by a limit switch or a position sensor. Only after confirming that the adjustment mechanism 3 is fully retracted and returned to the safe position can the control system 15 send the next rotation start signal to the rotation drive mechanism to ensure that no structural interference occurs during the rotation process.

[0044] In the above manner, the adjustment mechanism 3 is structurally independent of the rotating platform 1, depends on the platform state feedback sequence to intervene in control, and only performs single-point contact correction in the stationary state of the platform in terms of action, effectively improving the operation safety, positioning consistency, and barcode scanning recognition accuracy of the system.

[0045] It should be noted that the actuator 4 of the lifting adjustment unit can be replaced with a cylinder, a servo push rod, or a linear module. The selected component should have the corresponding response speed and control accuracy, and be compatible with the communication or signal interface of the system controller. The contact end can also be flexibly configured as a hemispherical head, a guide post plate, or an elastic contact body according to the bottom structure form of the fixture to adapt to the tooling structures of different recognition objects and improve the application range and adaptation flexibility of the adjustment mechanism 3.

[0046] Please refer to Figures 4-5 , in a possible implementation manner, the lifting adjustment unit is a structurally modular positioning and correction mechanism, including a driving actuator 4 and an adjustment and contact member. The actuator 4 is an electric cylinder, a cylinder, or an integrated guide rail module, and the adjustment and contact member is a guide post 5 or a functionally equivalent structure. Before recognition, it performs an upward contact action to achieve micro-positioning correction of the workpiece fixing component 2 at the recognition station, and retracts to the avoidance position before the rotating platform 1 is about to start to avoid interference.

[0047] Specifically, the actuator 4 is arranged in the vertical direction. Its cylinder body is fixed on the mounting seat of the equipment frame below the platform. The cylinder body is connected to the mounting seat by bolts and has a limit reference surface. The piston rod extends vertically upward, and an adjustment and contact member is installed at the end, preferably a metal guide post 5 with a diameter of 8 mm to 20 mm. The top of it is processed into a hemispherical head or a flat contact surface. The contact end of the guide post 5 forms a contact fit with the positioning area on the lower surface of the workpiece fixing component 2 to provide an axial micro-thrust when the fixture has a position offset. The maximum extension stroke of the cylinder body is preferably 20 mm to 40 mm, and the repeat positioning accuracy is better than ±0.1 mm.

[0048] In this embodiment, if an electric cylinder is used, its motor control signal is output by the PLC system and connected to the control end of the actuator 4 through the I / O module. The typical response time is no more than 200ms, which is suitable for the beat control of medium-speed to high-speed production lines. If a pneumatic cylinder is used, the reversing control is performed through a three-position five-way solenoid valve, which is suitable for simple structure and cost-sensitive occasions. The response time can be less than 100ms, but the position confirmation needs to be combined with a limit sensor. If a guide rail module structure is selected, it is often combined with a screw servo system, which is suitable for use scenarios with high recognition accuracy requirements, large fixture size, or multi-dimensional errors in the workpiece.

[0049] The control system 15 performs process management based on sequential logic: platform rotation stops → lifting adjustment unit rises → positioning contact → image acquisition → lifting adjustment unit retracts → platform enters the next round of rotation. To prevent structural interference, after the lifting mechanism is retracted, its guide column 5 sinks by no less than 30mm, and the position signal is fed back by an independently installed proximity switch, photoelectric sensor or encoder. The control system 15 can trigger the rotation action only after reading the retracted state confirmation signal, thereby establishing a complete safety interlock control logic.

[0050] In order to improve the adaptability to different fixture structures, the mounting seat of the adjustable contact member is designed as a replaceable structure, allowing the corresponding contact head to be selected according to the flat, inclined or concave shape of the fixture bottom surface, including hemispherical head, elastic rubber pad, embedded limit block, etc. The replacement process of the above contact member can be quickly completed by the operator through thread unscrewing without disassembling the main mechanism.

[0051] In other optional structures, the lifting mechanism can also be equipped with a servo electric cylinder with absolute position feedback, which can realize closed-loop control of displacement through the built-in encoder and link with the host computer vision module for online compensation to further improve the adjustment accuracy and position stability. It is suitable for industrial recognition platforms with extremely high requirements for image consistency and recognition accuracy.

[0052] See also Figure 1 , Figure 3 In a possible implementation, the code scanning module 6 includes a two-dimensional code recognition module 7 and a dot matrix code recognition module 8, which are respectively arranged. The two-dimensional code recognition module 7 is arranged in the upper area of the rotating platform 1, and is installed on the upper crossbeam of the frame through a bracket, with its lens optical axis facing downward; the dot matrix code recognition module 8 is arranged below the rotating platform 1, and is installed on the device base structure through a rigid support, with its lens optical axis facing upward. The two modules are distributed vertically up and down, and their installation structures are independent of each other, and the optical paths do not overlap, so as to avoid interference in the field of view.

[0053] The QR code recognition module 7 includes an industrial-grade code reader 9 (resolution not less than 1.3 million pixels), a wide-angle liquid automatic zoom lens assembly (focal lengths 16mm, 25mm), and an annular lighting device, and a hemispherical dome light source 11 is provided outside thereof. The lighting device is symmetrically arranged along the optical axis of the lens to form a composite lighting field adapted for the recognition of high-reflectivity materials at close range. The adjustable range of the bracket height is 200mm - 500mm, and the lighting angle is finely adjusted through a slide rail mechanism to cover various QR code positions on the upper surface of the fixture.

[0054] The dot matrix code recognition module 8 is an independently structured lower imaging system. Its lens system selects a long-focus lens with a focal length of 35mm to 50mm. A coaxial annular cold light source is provided at the front end of the lens, and is covered with a light-shielding cover and a diffuse reflection device. The optical axis of the lens is vertically upward and is arranged directly below the opening of the rotating platform 1. The installation method of the recognition module bracket is rigid locking, allowing ±5mm translation adjustment and ±10° angular fine adjustment of the lens position to achieve precise imaging alignment of complex dot matrix code areas such as deep grooves, concave surfaces, and curved surfaces.

[0055] In the control process, the startup of the code scanning module 6 is uniformly scheduled by the control system 15: after the rotating platform 1 stops and the positioning is confirmed to be completed by the positioning sensor 14, the system first triggers the adjustment mechanism 3 to complete the fixture alignment action, and then sets the trigger sequence according to the recognition type, and issues acquisition instructions to the QR code recognition module 7 and the dot matrix code recognition module 8 respectively. After the dot matrix code recognition module 8 completes the acquisition, its image data performs preprocessing steps such as gray level equalization, edge filtering, and code point enhancement through a dedicated image processing unit, and then performs bar code recognition and code system discrimination. The recognition result is sent to the local cache and can be uploaded to the traceability system.

[0056] In this embodiment, by independently arranging the dot matrix code recognition module 8 below the platform, and combining dedicated lighting, optical long-distance design, and a stable imaging bracket, a dot matrix code acquisition path adapted to the microcode recognition requirements of industrial metal components is established. This structure is particularly suitable for high-complexity scenarios such as invisible recognition areas, uneven code surfaces, and limited lighting conditions. Through the synergistic effects of precise positioning, stable lighting, and long-distance focusing, the image imaging consistency and the fault tolerance ability of the recognition algorithm are improved.

[0057] In the environmental contrast test, under a fixed tooling platform, using a unified dot matrix code sample (CNC probe / laser marked on the aluminum surface, code surface diameter 4mm, depth about 8μm), the recognition module was tested under 25 groups of different surface reflectivity and angle interference conditions. The results show that the average recognition success rate of this structure is 96%, which is about 21.5% higher than that of a single upper recognition module structure, and the recognition consistency is significantly better than the scheme without an independent lower module.

[0058] Please refer to Figure 1 、 Figure 3, in a possible implementation, the QR code recognition module 7 includes a camera, an annular light source 10, and a dome light source 11. The annular light source 10 is arranged below the lens of the camera and around its optical axis. The dome light source 11 is disposed below the annular light source 10 to form a combined lighting system for providing a composite light field of edge enhancement and soft light diffuse reflection, so as to reduce the interference caused by high-reflection materials to the acquisition of QR code images and improve the recognition contrast and stability.

[0059] The QR code recognition module 7 includes an industrial camera, an annular light source 10, and a dome light source 11. The industrial camera selects an image sensor with a resolution of not less than 1280×1024 pixels. The lens preferably adopts an auto-focus structure with a focal length range of 16 mm to 25 mm to achieve full-field coverage of the QR code image of the object to be recognized. The camera is fixedly arranged on the upper frame structure of the device and its position is finely adjusted through a height adjustment bracket in the Z-axis direction. The working distance can be adjusted within the range of 150 mm to 250 mm to adapt to different product specifications.

[0060] Specifically, the annular light source 10 is arranged below the camera lens, coaxially arranged along the optical axis, and is composed of a high-brightness LED array with a multi-point symmetric distribution, and is installed on the circular mounting surface at the bottom of the camera. The emitted light of the annular light source 10 forms a symmetric conical illumination area centered on the optical axis, which is mainly used to provide local directional illumination, strengthen the brightness gradient and contrast of the edge area of the QR code, and improve the image detail performance.

[0061] Among them, the dome light source 11 is an independent light-emitting unit, which is made of a milky white translucent material into a spherical crown-shaped cover body, and a diffused LED light source is evenly arranged inside it to directly emit light. The dome cover body makes the light evenly irradiate from the bottom of the dome towards the surface of the QR code by diffusing and diffusely reflecting the light emitted by the internal light source for multiple times. An opening through-hole with a diameter of about 70 mm to 100 mm is opened at the bottom of the dome, and the opening faces the surface of the object to be recognized. The dome light source 11 forms a shadowless light illumination field with isotropy and no obvious directionality through active light emission and combined with the secondary diffuse reflection effect of the dome structure, thereby effectively eliminating shadows, light spots and local overexposure phenomena caused by surface high reflection, curved surface structure or fine texture, and significantly improving the uniformity and clarity of QR code image acquisition.

[0062] In the code scanning process, when the rotating platform 1 completes the positioning and is confirmed by the position detection sensor, the control system 15 first triggers the dome light source 11 and the ring light source 10 in the two-dimensional code recognition module 7 to emit light according to the preset brightness output, and then triggers the camera to start image acquisition. The light source control parameters (such as brightness, current, voltage, and pulse width control) are uniformly managed by the central control system 15, and synchronized with the camera acquisition instructions through the I / O interface or serial communication to ensure that the lighting state is stable and consistent during the code scanning process. The collected two-dimensional code image is subjected to edge detection, image correction, QR code analysis, and code system determination by the visual processing module, and finally a high-precision multi-code recognition function is realized.

[0063] It is worth noting that the dome light source 11 can further integrate a variable brightness adjustment module to adapt to scenes with different surface reflectivity or different lighting requirements; the ring light source 10 can also be configured with a polarizing filter or a zoom optical system to optimize the lighting effects of surfaces of different materials; the camera lens can also be replaced with an autofocus structure, and the height adjustment module of the rotating platform 1 can be linked to dynamically adjust the shooting focal length, so as to further enhance the versatility and diverse adaptability of the platform.

[0064] See also Figure 1 , Figure 3 In a possible implementation, the dot code recognition module 8 includes a long focal length image acquisition lens 12 and an annular light source 10. The annular light source 10 is arranged around the front end of the lens and coaxially arranged below its optical axis to provide a lighting environment with weak directionality and uniform illumination distribution in the image acquisition area, thereby enhancing the imaging contrast of the edge of the code surface, suppressing reflection interference, and improving recognition stability and accuracy.

[0065] Specifically, the dot code recognition module 8 is installed in the lower area of the rotating platform 1, and its structure includes an image acquisition component, a lighting component and a mounting adjustment mechanism 3. The image acquisition component includes a telephoto lens, the focal length of which is preferably between 35mm and 50mm, and the lens is connected to an industrial camera with a resolution of not less than 1600×1200 pixels through a threaded interface. The lens and the camera are fixed integrally on a Z-axis slide rail bracket, which is arranged in the chassis structure of the equipment, allowing the lens to be adjusted in height by ±10mm in the vertical direction, and the axis of the lens field of view is facing upward, facing the fixture code surface below the rotating platform 1.

[0066] The lighting component is a ring-shaped cold light LED light source. The ring-shaped light source 10 is arranged around the lens optical axis. Its light-emitting angle is 120°. The uniformly arranged LED units form a concentric illumination spot, and the change in light intensity within the range of ±30 mm from the center of the code surface does not exceed ±15%. The ring-shaped light source 10 is fixed at the front end of the lens housing and is installed through a snap structure. The outside is covered with a light-shielding cover structure to shield external stray light, and a transparent optical glass sheet is set at the imaging window as a dust-proof protection layer to avoid interference of oil stains or particles with the imaging quality.

[0067] In the barcode scanning work process, when the rotating platform 1 reaches the recognition station and is detected by the bottom position sensor, the control system 15 outputs a light source start command, the ring-shaped light source 10 is lit and a stable illumination field is established. Subsequently, the system outputs a capture trigger signal to the camera, and the image capture component obtains the code surface image under stable illumination. The image data is transmitted to the image processing module, which performs contrast enhancement, edge filtering, dot matrix feature extraction and code value parsing to complete the recognition process.

[0068] The positioning sensor 14 is a non-contact inductive sensor, which is installed under the platform and senses the metal positioning block at the bottom recognition position of the rotating platform 1. When the platform completes the indexing action, the sensor outputs a high-level signal to the input end of the PLC to confirm the completion of positioning and authorize the start of image capture and lighting control, forming a closed-loop logic.

[0069] To meet the recognition requirements of different types of dot matrix codes, the image capture component can be optionally equipped with a lens with automatic aperture control to achieve imaging adaptability under different illuminations; the lighting module can also be upgraded to a multi-segment independently controllable partitioned LED array to optimize the specular reflection state of complex surfaces through zone-by-zone dimming. The entire module structure also supports integration with an electric lifting mechanism to automatically switch the imaging height when replacing products, improving the flexible recognition ability.

[0070] Please refer to Figure 6 , in a possible implementation manner, the control system 15 is used to control the lifting of the adjusting mechanism 3 after the rotating platform 1 stops, so that it contacts the workpiece fixing component 2 at the current recognition position and performs position correction; before the image capture is completed and the rotation start command is received, the control adjusting mechanism 3 retracts to a preset avoidance position to ensure that the adjusting mechanism 3 does not interfere with other workpiece fixing components 2 in the rotation path during the rotation process.

[0071] When the object to be recognized is placed on the workpiece fixing component 2 on the rotating platform 1 manually or automatically, the material detection sensor 13 senses the product placement state in real time. After confirming that the product to be detected is correctly positioned, it sends a confirmation signal to the control system 15. After receiving the product placement signal, the control system 15 further detects whether the rotating platform 1 has stopped and is stably positioned to prevent the moving platform from affecting subsequent recognition operations. If all conditions are met, the control system 15 issues an instruction to drive the adjusting mechanism 3 arranged below the rotating platform 1 to rise vertically and contact the workpiece fixing component 2 at the recognition position, perform attitude correction by applying appropriate positioning pressure, and ensure that the two-dimensional code or dot matrix code of the object to be recognized is spatially aligned with the acquisition area of the code scanning module 6, thereby improving the success rate of image acquisition and the accuracy of data recognition.

[0072] After the position correction is completed, the control system 15 immediately triggers the reader 9 or CCD camera of the code scanning module 6 to start, and efficiently acquires the two-dimensional code or dot matrix code image on the surface of the product to be detected according to the preset acquisition parameters. During the code scanning process, the control system 15 continuously monitors the image acquisition status to ensure that the data is complete and meets the standards. After the code scanning module 6 completes the image acquisition and feeds back the completion signal to the control system 15, the control system 15 controls the adjusting mechanism 3 to retract to the preset avoidance position and continuously detects its retraction action. Only after the adjusting mechanism 3 confirms that it has completely retracted and reached the safe area, the control system 15 allows the rotating platform 1 to perform subsequent rotation actions. Through the above closed-loop control, the safe clearance between various mechanisms during the continuous operation of the rotating platform 1 is ensured, effectively avoiding abnormal operation caused by mechanical interference, and improving the overall stability and safety of the equipment.

[0073] After the retraction of the adjusting mechanism 3 is completed and safety is confirmed, the control system 15 further calls the image processing and data management module to deeply analyze and process the acquired image data, including decoding of the two-dimensional code or dot matrix code image, screening of valid data, elimination of duplicate information, and fusion of recognition results. Finally, the processed recognition data is uploaded to the external traceability database or product management system through the communication interface to realize the centralized management of recognition data and the effective association of traceability information. Through the above process control, each action is uniformly coordinated by the control system 15, and each detection and execution unit cooperates efficiently. The overall action sequence is clear and the signal flow is natural, ensuring that the intelligent multi-code collaborative recognition platform operates efficiently, stably and safely in the high-tempo production line environment, and at the same time greatly improving the recognition accuracy and system reliability.

[0074] In a possible implementation, the control system 15 further includes an image processing and data management module, which is used to perform decoding, valid data screening, duplicate information elimination, and result fusion processing on the image data collected by the code scanning module 6, and upload the recognized barcode information to an external traceability database or product management system to achieve centralized management of multi-code recognition data and association of traceability information.

[0075] Specifically, the image processing and data management module consists of an image acquisition interface unit, an image recognition calculation unit, a data cache module, a redundancy judgment module, and a communication output module, and is integrated with the main PLC or embedded main control unit of the control system 15 through Ethernet or serial communication.

[0076] After the code scanning module 6 starts the recognition action, it receives the original image data from the two-dimensional code recognition module 7 and the dot matrix code recognition module 8 through the image acquisition interface unit. This data is cached in the local cache of the image processing system in a standard format (such as BMP or JPEG). Subsequently, the image recognition calculation unit performs steps such as image parsing, grayscale normalization, edge feature extraction, code area positioning, and character decoding based on the image coordinate calibration information and the preset code system rules, and outputs the recognition result and identification information such as the corresponding timestamp and workpiece ID.

[0077] To ensure the data consistency of multi-module collaborative recognition, the data management module is provided with a duplicate information judgment logic. This logic works based on the following mechanism: when the two-dimensional code and the dot matrix code modules simultaneously recognize barcode information, the system compares their code values, time tags, and workpiece position tags. If all match, they are merged into one valid piece of information; if there is duplicate information (for example, the recognition results of the two modules are the same but the time interval is less than 1 second), it is determined as a redundancy of one recognition and deduplication processing is performed; if the recognized content is inconsistent, a conflict flag bit is recorded for subsequent manual review.

[0078] All recognition data uniformly enters the structured data buffer module, which is archived based on a preset field structure (such as code value, code type, station number, recognition time, duplicate flag, etc.) and written into the local database cache in chronological order. The communication output module uploads the recognized data to an external MES system, ERP system, or traceability server in a standard format (such as JSON, CSV, or OPCUA protocol data packet) to achieve the association and binding of the code scanning information with product batches, operation sections, logistics processes, etc.

[0079] In addition, the image processing module supports the data quality annotation function, which can add image quality level labels to images with recognition failures or blurred edges for quality tracking or construction of machine learning optimization models; the system can also retain the original data and recognition results of the most recent N images for spot checks, traceability, or algorithm accuracy verification.

[0080] It should be noted that the image recognition unit can use an edge computing module (such as NVIDIA Jetson, Intel Movidius, etc.) to implement local computing to reduce data transmission delay; the data upload interface can use a wireless communication module (such as 5G, Wi-Fi 6) for mobile platforms or remote recognition application scenarios; the data fusion rule can also be extended to an identification fusion mechanism based on confidence weights to achieve a more robust identification judgment result.

[0081] In a possible implementation manner, it further includes a positioning sensor 14 and a material detection sensor 13. The positioning sensor 14 is used to detect whether the rotating platform 1 has completed positioning, and the material detection sensor 13 is used to detect whether the object to be recognized is located on the workpiece fixing component 2. The control system 15 coordinates and controls the lifting action of the adjusting mechanism 3 and the image acquisition timing of the code scanning module 6 according to the feedback signals of the positioning sensor 14 and the material detection sensor 13, so as to realize the synchronous linkage of platform rotation, fixture adjustment and image acquisition actions, and improve the timing accuracy and operation stability of the recognition process. Specifically, the positioning sensor 14 is used to detect whether the rotating platform 1 has reached a preset positioning coefficient, and this positioning standard is confirmed by detecting the position value of the specified moving line, and the detection accuracy reaches ±0.1 mm. The material detection sensor 13 is used to detect whether the object to be recognized is correctly placed and located on the workpiece fixing component 2, and through optoelectronic or visual detection technology, it is ensured that the object enters a predetermined accuracy range (within ±0.5 mm). The control system 15 coordinates and controls the lifting of the adjusting mechanism 3 and the image acquisition timing of the code scanning module 6 according to the feedback signals of the positioning sensor 14 and the material detection sensor 13 through preset delay and signal linkage coordination, so as to realize the high-precision synchronous linkage of platform rotation, fixture adjustment and image acquisition operations, and improve the timing accuracy and operation stability of the recognition process.

[0082] The positioning sensor 14 is installed at the automatic stop point of the rotating platform 1, and it confirms whether the platform has reached the predetermined position by detecting the positioning coefficient (such as the position of the stop line). The material detection sensor 13 is installed near the workpiece fixing component 2, and it detects the in-place situation of the object to be recognized through optoelectronic or visual technology. The control system 15 synchronously analyzes the two types of signals, ensures that both the platform in-place and the material in-place meet the conditions, then starts the lifting of the adjusting mechanism 3, then starts the image acquisition of the code scanning module 6 after the in-place is completed, and finally receives the rotation instruction to ensure the consistency and timing optimization of each step of operation, and avoid failures caused by out-of-sync operation or blockage.

[0083] By implementing the positioning sensor 14 and the material detection sensor 13, it is possible to effectively detect whether the rotary platform 1 is positioned and whether the object to be identified is correctly placed, greatly improving the timing accuracy of the platform rotation and identification operations. At the same time, by adjusting the signal linkage, errors such as scanning the code when the material is not in place or the platform is not positioned are avoided, reducing the recognition failure rate by up to approximately, improving the overall system stability, reducing the failure rate, reducing the maintenance cost, and providing a basis for data statistics and intelligent analysis.

[0084] The positioning sensor 14 can be an optoelectronic positioning sensor 14 (such as an optoelectronic truncation sensor), a magnetic positioning sensor 14 (such as a magnetic positioning sensor 14), or a moving line positioning sensor 14, and is selected according to actual needs. The material detection sensor 13 can use an optoelectronic detection sensor (such as light interference detection), an acoustic wave detection sensor, or a vision detection module (such as an open disc camera), and is selected and matched according to the material, size, and shape of the object to be identified. The control system 15 can automatically adjust the delay parameters and operation process through an adaptive algorithm to maximize the optimization of the timing coordination and adapt to different production line rhythms and production requirements.

[0085] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0086] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An intelligent multi-code collaborative recognition platform, characterized in that Comprising: A rotating platform for carrying a plurality of objects to be identified, the rotating platform rotating intermittently along a preset axis; A plurality of workpiece fixing components arranged on the rotating platform for respectively fixing the objects to be identified; An adjusting mechanism arranged below the rotating platform, contacting the workpiece fixing component at the identification position and performing a position correction action after the rotating platform stops, and completing a retraction operation before the rotating platform receives the next rotation control instruction to prevent structural interference with other workpiece fixing components in the rotation path; At least one code scanning module arranged above and / or below the rotating platform for collecting two-dimensional code and / or dot matrix code images on the objects to be identified; A control system for controlling the intermittent rotation of the rotating platform, controlling the lifting action of the adjusting mechanism and the image acquisition timing of the code scanning module, and coordinating the operation sequence of the rotating platform, the plurality of fixing components, the adjusting mechanism and the code scanning module.

2. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that, The workpiece fixing components are arranged on the rotating platform in a circumferential array or an approximate circumferential array manner to realize multi-station uniform arrangement and identification operations with consistent beats.

3. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that The adjusting mechanism is a structurally independent lifting and adjusting unit, including an actuator that can expand and contract in the vertical direction, rising and contacting the workpiece fixing component at the identification position to perform position correction, and automatically retracting to an avoidance position before rotation.

4. The intelligent multi-code collaborative recognition platform according to claim 3, characterized in that The lifting and adjusting unit includes an electric cylinder, a pneumatic cylinder or a guide rail module, wherein the electric cylinder or the pneumatic cylinder is used for quickly responding to the lifting action and is suitable for the rhythm of a high-beat production line; a guide post or an adjusting contact part is arranged at its end for performing position correction on the workpiece fixing component before identification and retracting to the avoidance area before the rotation action.

5. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that, The code scanning module includes a two-dimensional code recognition module and a dot matrix code recognition module; the two-dimensional code recognition module is arranged above the rotating platform and arranged downward for performing near-distance wide-angle recognition on high-reflective materials; the dot matrix code recognition module is arranged below the rotating platform and arranged upward, equipped with a long focal length lens and high-contrast illumination. The above two modules do not interfere with each other structurally and are respectively adapted to the differences in the requirements for angles and light sources of different code systems in function, constituting a cooperative recognition structure.

6. The intelligent multi-code collaborative recognition platform according to claim 5, characterized in that, The two-dimensional code recognition module includes a camera, an annular light source and a dome light source. The annular light source is arranged below the lens of the camera and arranged around its optical axis. The dome light source cover is arranged below the annular light source, constituting a combined lighting system for providing a composite light field of edge enhancement and soft light diffuse reflection to reduce the interference caused by high-reflective materials to the two-dimensional code image acquisition and improve the recognition contrast and stability.

7. The intelligent multi-code collaborative recognition platform according to claim 5, characterized in that The dot matrix code recognition module includes a long focal length image acquisition lens and an annular light source. The annular light source is arranged around the optical axis below the lens and arranged coaxially with the lens for providing an annular illumination area with weak directivity and uniform illuminance to enhance the imaging contrast of the code surface boundary area, reduce halo and reflection interference, and improve the recognition stability and recognition accuracy of the dot matrix code.

8. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that The control system is used to control the lifting of the adjustment mechanism after the rotary platform stops, so that it contacts the workpiece fixing component at the current identification position and performs position correction; Before the image acquisition is completed and the rotation start instruction is received, the adjustment mechanism is controlled to retract to a preset avoidance position, to ensure that the adjustment mechanism does not interfere with the structure of other workpiece fixing components in the rotation path during rotation.

9. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that The control system further includes an image processing and data management module, which is used to perform decoding, valid data screening, duplicate information elimination and result fusion processing on the image data collected by the code scanning module, and upload the identified barcode information to an external traceability database or a product management system to realize centralized management of multi-code recognition data and association of traceability information.

10. The intelligent multi-code collaborative recognition platform according to claim 1, characterized in that, It also includes a positioning sensor and a material detection sensor. The positioning sensor is used to detect whether the rotary platform is positioned, and the material detection sensor is used to detect whether the object to be identified is located on the workpiece fixing component. The control system coordinates and controls the lifting action of the adjustment mechanism and the image acquisition timing of the code scanning module according to the feedback signals of the positioning sensor and the material detection sensor, so as to realize the synchronous linkage of platform rotation, fixture adjustment and image acquisition actions, and improve the timing accuracy and operation stability of the recognition process.

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