463 results about "Vision inspection" patented technology

The invention provides a detection, grinding and sand blasting integrated platform for a small complex workpiece. The detection, grinding and sand blasting integrated platform comprises a platform body, a grabbing robot is installed on the table body, and a feeding conveying line, a first visual detection mechanism, a grinding station and a sand blasting station are arranged on the periphery of the grabbing robot. A second visual inspection mechanism is arranged on one side of the polishing station; the grinding station comprises a movable seat used for carrying workpieces, and the movable seat is connected with a translation mechanism. A cleaning assembly is slidably mounted in the polishing station, the cleaning assembly is connected with a locking mechanism, a supporting frame is fixed to the movable seat, and a connecting mechanism is mounted on the supporting frame and used for being connected with the locking mechanism; an unlocking part is arranged on the connecting mechanism; the cleaning assembly is connected with a reset part. The equipment integrates the functions of detection, grinding and sand blasting, one-stop machining of workpieces is achieved, and manual circulation among multiple pieces of equipment is not needed. And meanwhile, based on a visual detection result, self-adaptive polishing path planning is carried out, and a polishing track can be dynamically generated according to the defect type and position.

The invention relates to dispensing detection integrated equipment, and belongs to the technical field of IGBT packaging, and the dispensing detection integrated equipment comprises a feeding and discharging conveying line which extends in the X-axis direction; the transplanting conveying line is arranged on one side of the feeding and discharging conveying line and extends in the Y-axis direction; the NG conveying line is arranged on one side of the transplanting conveying line and extends in the Y-axis direction; the dispensing mechanism is erected above the transplanting conveying line and is far away from the loading and unloading conveying line; the AOI visual inspection mechanism is erected above the transplanting conveying line and located between the feeding and discharging conveying line and the dispensing mechanism; the carrying mechanism is erected above the area where the feeding and discharging conveying line, the transplanting conveying line and the NG conveying line are located. By reasonably arranging the positions of the conveying line and the mechanism, the movable line of product production is optimized, the physical path of the production process is shortened, a complete quality closed loop is constructed, and the automation efficiency of the dispensing procedure and the product yield are effectively improved.

The invention provides a generation and discrimination collaborative optimization industrial visual detection system and method, and relates to the field of computer vision and artificial intelligence. The decoder comprises a unified encoder, a reconstruction decoder, a condition generation decoder and a discrimination head; the unified encoder is used for extracting general visual features based on the to-be-detected image; the reconstruction decoder is used for obtaining a reconstruction image without defects; the condition generation decoder is used for generating a defect image containing a specified defect; the discrimination head is used for identifying the reconstructed image and outputting confidence based on an identification result; training is carried out based on a defect image generated by a condition generation decoder, and a defect category and a category probability are generated; and the collaborative optimization module is used for constructing a collaborative loss function, a task loss function and a total loss function, reversely updating a discrimination head parameter based on a gradient generated by the total loss function, and generating a decoder parameter and a unified encoder parameter. The joint evolution of the generative model and the discrimination model is realized, and the performance of industrial visual inspection can be effectively improved.

The invention relates to the technical field of vertical shaft guide detection, in particular to an industrial intelligent visual detection and diagnosis system for a vertical shaft guide. The coal dust shadow quantization unit extracts a coal dust region by adopting a double-peak self-adaptive threshold segmentation combined region growing algorithm, and introduces a space weight factor to calculate an average gray value and a coverage area proportion, and the dynamic coupling calibration unit depends on a three-dimensional lookup table calibrated by multiple working conditions and nonlinear interpolation; the optimal deviation compensation coefficient of the jitter and coal dust combination is matched, a dynamic gray segmentation threshold value is generated, and a defect diagnosis decision unit accurately calculates the abrasion depth through partition self-adaptive segmentation, multi-scale morphological filtering and denoising and gradient amplitude and curvature double-constrained sub-pixel edge detection. A hierarchical control instruction is output according to the real-time depth and the historical trend, coupling interference is eliminated, the cage guide abrasion detection accuracy is improved, and a reliable basis is provided for safe operation and maintenance.

The invention relates to the technical field of computer vision detection, and discloses a PCB defect detection method based on improved YOLOv8. According to the invention, by introducing the C2f module fused with the coordinate attention mechanism, the adaptive weighted bidirectional feature pyramid structure and the lightweight decoupling detection head, the feature extraction capability and the spatial positioning precision of the model for PCB micro defects are improved, and the problem of small target missing detection is solved; meanwhile, in combination with defect area specific enhancement training and a dynamic receptive field optimization strategy, the anti-interference capability of the model to a complex background is enhanced, and the false detection rate is greatly reduced; besides, by adopting a structure re-parameterization technology, the model reasoning speed is improved while the detection precision is ensured, so that the method can be efficiently deployed on industrial detection equipment with limited resources, the balance of high precision and high efficiency is realized, and the comprehensive performance of PCB defect detection is comprehensively improved.

According to the blowing detection equipment and the detection method, the structure is simple, the accurate positions of the materials can be observed through a displayer, the overlapped and side-by-side materials can be distinguished through image processing, and the mistaken blowing or missing blowing process of the blowing nozzle can be directly observed through cached images. The device comprises a feeding module, a rotating disc module, a visual detection module and a material receiving module, the material receiving module comprises a material receiving support, an OK blowing module and an NG blowing module, and the visual detection module is arranged between the feeding module and the material receiving module and matched with a product at the loading disc end of the rotating disc module; the measuring method comprises the following steps: A, feeding and straightening a product; B, acquiring images of the product at different detection positions; C, comparing and controlling the state switching of the material receiving assembly according to image acquisition results; and D, synchronously detecting false blowing and missing blowing through the monitoring camera. The method is applied to the technical field of product sorting.

The invention discloses a workpiece visual inspection equipment control system, and relates to the technical field of visual inspection, the workpiece visual inspection equipment control system comprises a main body mechanism, the main body mechanism comprises a workbench, and the top of the workbench is provided with a turnover mechanism. A workpiece is fixed twice through a first clamping plate and a second clamping plate, the number of times of fixing the workpiece again is reduced, the comprehensiveness of workpiece detection is further improved, repeated positioning errors are avoided, meanwhile, the clamping direction can be automatically switched through rotation of a gear, the detection efficiency and flexibility are remarkably improved, and through the arrangement of a lifting unit, the detection precision is improved. Temporary support is provided in the workpiece reversing process, the workpiece is lifted before fixing to ensure full attachment to the rotating block, a contact gap is eliminated to improve the rotating stability, the workpiece retracts in time after being clamped to avoid interference to multi-axis movement, and the workpiece is lifted again before reversing to prevent the workpiece from being separated from the rotating block due to gravity.

The invention provides a visual inspection system which is used for detecting the appearance of a workpiece, and the outer surface of the workpiece comprises a first end face and a side surface which are connected. The visual detection system comprises a positioning unit and a first detection unit; the positioning unit is used for positioning a workpiece; the first detection unit comprises a reflector device and a visual detection device. The reflecting mirror device is used for being arranged in the circumferential direction of the workpiece so as to image a part of the side surface of the workpiece. The light incidence face of the visual detection device is used for being arranged opposite to the first end face of the workpiece so as to shoot an image of the first end face for appearance detection and shoot an imaging image in the reflector device for appearance detection. The visual detection device is adopted to perform appearance detection on the first end face and the side surface of the workpiece, so that the detection precision and the detection efficiency of the appearance of the workpiece are greatly improved.

The invention belongs to the technical field of three-dimensional modeling, and particularly relates to a three-dimensional visual detection method for motorcycle tires. According to the method, a tire is fixed, multi-view point cloud scanning is carried out, and an improved SAC-IA algorithm is adopted for registration and fusion to construct a three-dimensional point cloud model; the method comprises the following steps: designing adaptive voxel grid filtering and denoising based on tire geometric prior, and after improved bilateral filtering smoothing, fitting and unifying a coordinate system through principal component analysis and least square to obtain a standardized point cloud model; and extracting four core parameters of thickness uniformity and sidewall contour curvature, inputting the four core parameters into the hybrid dynamic weight scoring network to output quality scores, and meeting the requirements of high-precision and high-efficiency quality inspection of motorcycle tires in an industrial environment.

The invention discloses a vision tester, and relates to the field of visual function measurement. The vision tester comprises a display, a computer and a selector, every two of the display, the computer and the selector are in communication connection; during vision examination, a testee is positioned right opposite to the display; the display is used for displaying sighting marks with different sizes and shapes; the selector is worn by a testee and is used for collecting a sighting mark identification result of the testee; and the computer is used for determining the vision examination result of the testee according to the identification result of the testee on the sighting mark. According to the visual acuity tester, visual acuity screening is not limited by scenes, and convenience and accuracy of visual acuity screening can be improved.

Clinical-quality eye examinations are provided at locations remote from the physician and outside of a clinical setting. A portable optical device and corresponding software are delivered to the patient's location. The portable optical device is configured for patient use in self-conducting an eye or vision exam and taking optical measurements. As a function of type of optical measurement data or health consideration of the patient, the corresponding software provides uploading and live streaming of the optical measurement data to the physician. The corresponding software is executed during the patient conducting the eye (vision) exam and enables the remotely located physician, to participate in the same via video conference. Alternatively, an artificial intelligence resource operating remotely or locally can provide physician-type guidance and eye health assessments. Alignment of device and patient eyes can be facilitated for remote exams.

The invention discloses an automatic welding process combining laser scanning with visual inspection. The process specifically comprises four working procedures of laser scanning before welding, automatic wire feeding, automatic welding and online tracking detection in welding. The specific implementation effects of each process are as follows: the pre-welding laser line scanner scans a weldment by emitting a laser beam to extract three-dimensional information of the weldment, so that a welding route is conveniently planned, and a walking route is fed back to the control cabinet; the control system can receive an instruction to control the driving system to carry out an automatic welding process, so that the welding gun reaches a specified position to carry out automatic welding; in the welding process, the infrared laser tracker dynamically tracks the welding gun, corrects the walking route and guides the compound eye camera to conduct visual inspection so as to judge the welding quality, and the machining targets that components at the welding seam connecting position are uniform, and the welding seam surface is high in quality and low in defect are achieved.

The embodiment of the application discloses a kind of visual detection system, detection method and related device, visual detection system includes stage assembly, robot assembly and visual component, stage assembly includes driving part and stage body.The visual detection system provided by the application, stage assembly also has the ability of movement, stage assembly can be driven by driving piece and move and rotate along the first direction, at least for driving visual component to move in second direction and third direction by robot assembly, on the one hand, stage assembly and robot assembly can coordinate motion, can improve detection efficiency, can be carried on multiple stage bodies on stage assembly, that is, multiple pieces to be detected can be detected simultaneously;On the other hand, robot assembly can not move in the first direction, stage body moves in the first direction, reduces the probability that error is generated by the combination of stage body motion trajectory and robot assembly motion trajectory, to make visual detection more accurate.

The invention relates to the technical field of insulation rope detection, and discloses a high-precision measurement and surface defect identification insulation rope full-automatic detection system, which comprises a take-up and pay-off module, a laser measurement module, an AI visual detection module, a tension control module, a data transmission module and a data processing module, and is characterized in that the take-up and pay-off module comprises an active take-up and pay-off mechanism; the laser measuring module comprises a high-precision laser diameter measuring instrument; the AI visual detection module comprises a YOLOv8 visual detection system; the tension control module comprises a pneumatic tension controller; the data transmission module comprises an industrial Ethernet, and the data processing module comprises an industrial computer and professional data processing software. According to the full-automatic insulation rope detection system with high-precision measurement and surface defect identification, full-process automation of insulation rope detection is realized, and the problems of low efficiency, poor precision and high false alarm rate of traditional manual detection are solved.

This invention relates to a trimming end effector. The device includes a trimming module, a vision inspection module, an expansion module, and electrical and pneumatic control modules. This device replaces existing manual trimming methods with automated equipment, improving efficiency and reducing operator injury. Compared to existing end effectors, this device can adapt to both offline and real-time online compensation, and can select appropriate algorithm strategies based on factors such as the characteristics of the workpiece. The same trimming end effector can be used to adapt to different product configurations, significantly improving product adaptability. The device features a detachable expansion module at the front end, enabling automatic tool changing, chip removal, and clamping functions. The trimming end effector achieves stable connection with a robot via a quick-change mechanism. The quick-change module allows for high-precision, repeatable connections, enabling different processing functions to be performed at the same workstation according to process requirements. This device has broad application prospects in the aircraft assembly industry.

This application relates to the field of home appliance manufacturing technology, and provides a smart manufacturing production line and method for refrigerator bodies. The smart manufacturing production line for refrigerator bodies includes an outer shell forming line, an inner liner assembly line, and an assembly station. The inner liner assembly line includes a first positioning device, a second positioning device, a vision inspection device, a pushing device, and an automatic screw-locking device. The first and second positioning mechanisms are used to position the first and second inner liners respectively, and drive the first and second inner liners to move towards each other in a horizontal direction, so that the first mating part of the first inner liner and the second mating part of the second inner liner are aligned and engaged. The vision inspection device is used to perform alignment detection on the first and second mating parts from the side. The pushing device is used to apply an upward pushing force to the aligned mating parts. The automatic screw-locking device is used to downwardly fasten screws to the aligned mating parts, so that the screws pass through the aligned mating parts and are locked into the threaded holes of the metal parts, realizing the automated assembly of the refrigerator inner liners.

This application discloses an industrial inspection method, apparatus, equipment, product, and storage medium, relating to the field of industrial vision inspection technology. The method includes: responding to an industrial inspection command, acquiring an image to be inspected for membrane defects; processing the image using a preset defect detection model to obtain a defect detection result. The preset defect detection model is obtained by quantizing a target defect detection model, which is obtained by structural pruning and lightweight reconstruction of an initial defect detection model. The structural pruning and lightweight reconstruction are used to reduce the number of model parameters and computational load. This application reduces the number of model parameters and computational load through structured pruning and lightweight reconstruction, and then quantizes the model, enabling the quantized model to be deployed on edge devices while improving the model's inference efficiency, achieving efficient model compression and real-time inference.

The invention provides substrate visual inspection equipment, which comprises a horizontal conveying mechanism, a positioning carrying table mechanism, a visual inspection mechanism and an NG marking mechanism, and is characterized in that the horizontal conveying mechanism is used for conveying a substrate to the positioning carrying table mechanism for positioning; the positioning platform deck mechanism forms a detection platform for substrate detection above the horizontal conveying mechanism; the visual detection mechanism is used for carrying out visual detection on the substrate on the positioning carrying table mechanism and comprises at least two cameras which are arranged left and right, a light source, a first moving assembly for respectively driving the two cameras to move left and right and a second moving assembly for respectively driving the two cameras to move up and down; the NG marking mechanism is used for marking the substrate with the detection result being NG, and the NG marking mechanism is located between the two cameras in the horizontal direction and located above the positioning carrying table mechanism in the vertical direction.

The invention provides a visual inspection machine for an electrostatic chuck production line, and the visual inspection machine comprises a conveying unit which is used for conveying an electrostatic chuck product; the visual detection unit is used for performing visual detection on the electrostatic chuck product; and the synchronous overturning unit is used for conducting overturning operation on the electrostatic chuck product twice. According to the device, the overturning assembly can drive the overturning disc frame to rotate, so that the overturning disc frame can be used for overturning the electrostatic chuck product, the detector set can conveniently conduct visual detection on the top and the bottom of the electrostatic chuck product, visual detection can be comprehensively conducted on the electrostatic chuck product, and the detection efficiency is improved. And meanwhile, the overturning disc rack can overturn the electrostatic chuck product along with the operation of the conveying belt group, the operation of the conveying belt group is not influenced, the electrostatic chuck product is overturned after being clamped by an additional clamp, and the detection sight of the detector group is not blocked, so that the visual detection efficiency and the detection accuracy can be improved.

This invention belongs to the field of computer vision and image processing technology, specifically relating to a connector size inspection method and system based on industrial vision. The method includes: determining the effective detection area of ​​the pin through preprocessing and target region segmentation; extracting the original one-dimensional grayscale sequence of the pin's lateral direction and smoothing it to obtain a smooth one-dimensional grayscale sequence; calculating the optical reflection energy integral difference between the two ends of the pin's physical center based on the smooth one-dimensional grayscale sequence to construct a lateral optical reflection asymmetry index; extracting the absolute value of the sum of differences between adjacent rows and the sum of the absolute values ​​of the differences within the evaluation window to construct a structural torsional continuity coefficient; and correlating the maximum value of this index with the structural torsional continuity coefficient to obtain a comprehensive micro-torsion defect index, thereby achieving industrial vision inspection of connector dimensions. This invention effectively solves the problem that traditional two-dimensional inspection techniques struggle to identify pin micro-torsion and have a high false negative rate.

This invention relates to the field of industrial vision inspection technology, specifically to a method and system for detecting holes in aluminum alloy die castings based on industrial vision. The method includes: acquiring and preprocessing an image of the aluminum alloy die casting; segmenting the image into regions, and based on the distribution characteristics of grayscale and gradient in the region segmentation results, identifying suspected hole regions in the image; using the contour and texture features of the suspected hole regions, filtering them to obtain hole regions and regions to be determined; calculating the hole coefficient of the region to be determined based on the grayscale value distribution level of pixels in the region to be determined, and using the hole coefficient to filter out the hole regions in the region to be determined; and using the scale of the hole regions contained on the surface of the aluminum alloy die casting to assess the quality of the aluminum alloy die casting. This invention improves the accuracy of detecting hole defects in aluminum alloy die castings.

The present invention provides an electrode vision inspection device (10) comprising: a first light emission unit (100) that includes a first light-emitting unit (110) for emitting a first light (L1) directed toward a first surface (S1) on one side in the thickness direction of an electrode unit (50) and a second light (L2) passing through the outside of the edge of the first surface (S1), and a film (130) arranged on an optical path of at least a part of the second light (L2) so as to change the brightness or color of the passing light; a second light emission unit (200) that includes a second light-emitting unit (210) for emitting a third light (L3) directed toward a second surface (S2) of the other side in the thickness direction of the electrode unit (50); a first image acquisition unit (300), which senses the first light (L1) reflected on the first surface (S1), so as to acquire a first image (G1); a second image acquisition unit (400), which senses the third light (L3) reflected on the second surface (S2) and the second light (L2), so as to acquire a second image (G2); and a detection unit (500) for detecting an edge position or contour of the electrode unit (50) or a predetermined part (P) of the electrode unit (50) on the basis of brightness values or color values of the first image (G1) and the second image (G2).

The utility model provides a visual inspection calibration platform, the visual inspection calibration platform comprises a calibration base plate, a first detection part, a second detection part and a to-be-inspected piece adjusting part, the first detection part comprises a first detection piece and a first adjusting assembly, the first detection piece is arranged on the calibration base plate through the first adjusting assembly, and the second detection part is arranged on the calibration base plate through the second adjusting assembly. The second detection part comprises a second detection piece and a second adjusting assembly, the second detection piece is arranged on the calibration bottom plate through the second adjusting assembly, the to-be-detected piece adjusting part comprises a to-be-detected piece body and a third adjusting assembly, and the to-be-detected piece body is arranged on the calibration bottom plate through the third adjusting assembly; the to-be-detected piece body can be arranged at the intersection of the axis of the first detection piece and the axis of the second detection piece. The visual detection calibration platform can realize detection and calibration of the to-be-detected piece body, can adjust the angle to enable the detection angles to be diversified, and can realize multidirectional imaging; through cooperation of the first detection piece and the second detection piece, imaging is stereoscopic, and the detection accuracy is high.

This invention belongs to the field of high-power semiconductor laser array coupling technology, specifically providing an optical element dispensing and curing system and method based on dual-target monitoring. The system includes a multi-degree-of-freedom precision displacement platform, a vision inspection unit, a dispensing system, a dual-path photoelectric feedback module, and a central control unit. The dual-path photoelectric feedback module includes a beam splitting unit, an optical power detection unit, and a spot imaging detection unit. The beam splitting unit splits the laser beam into two paths, one of which is used for beam analysis to obtain the beam arrangement. The optical power detection unit receives the other beam from the beam splitting unit and provides real-time feedback of its optical power value. The spot imaging detection unit receives the reflected sampled beam. The central control unit integrates an industrial control computer and a motion control card. This invention designs a closed-loop hardware system including a beam splitting prism, dual detectors, and a multi-degree-of-freedom platform to solve the problem of low multi-degree-of-freedom coupling efficiency in existing technologies.

The utility model discloses a CCD (Charge Coupled Device) automatic weighing sorting machine which comprises a first conveyor, a second conveyor and a third conveyor, and the weighing conveyor is arranged on one side of the conveyor I. The air purifier product weighing and sorting device has the beneficial effects that by arranging the weighing conveyor and the CCD visual inspection equipment, air purifier products are weighed, images are acquired and processed, the weighing and sorting efficiency of the air purifier products is improved, the sorting efficiency and accuracy are improved, and the labor intensity of workers is reduced. According to the reworking device for the air purifier, the pushing air cylinder and the pushing plate are arranged, the pushing plate is jacked by the output end of the pushing air cylinder, the air purifier products are jacked out of the discharging opening and the third conveyor, and the unqualified air purifier products are reworked through the third conveyor; after weighing, if the weight is not proper, it is indicated that the parts are not installed, the part moves on the third conveyor for reworking, and if the weight is proper, the part directly moves in front of the second conveyor for next-step packaging.

This invention discloses an H-type assembly and inspection fixture for automotive seat slide rails, belonging to the field of automotive assembly and inspection technology. It adds a vision inspection mechanism and a mounting hole inspection mechanism to the H-type assembly fixture, integrating slide rail assembly and inspection functions. During the sliding assembly of the inner and outer slide rails, a pair of industrial cameras are used to identify the position of the seat mounting holes on the inner slide rail in real time to check the conformity of the slide rail's incoming material position. After the pair of slide rails and the horizontal bracket are installed, multiple mounting hole inspection mechanisms simultaneously perform secondary inspections on multiple seat mounting holes. The inspection pins detect changes in resistance during the perforation process to determine the flatness of the inner hole. A protective sleeve is added outside the force-sensing pin as the direct force-bearing surface to prevent damage to the seat mounting holes due to direct thrust in cases of abnormal hole wall conditions. This allows for simultaneous inspection of the seat mounting hole's position and flatness during assembly.

The invention relates to the technical field of industrial vision detection, in particular to an aluminum alloy die casting hole detection method and system based on industrial vision, and the method comprises the steps: obtaining an aluminum alloy die casting image, and carrying out the preprocessing; performing region segmentation on the aluminum alloy die casting image, and obtaining a suspected hole region in the aluminum alloy die casting image based on distribution information characteristics of a region segmentation result on gray scale and gradient; screening the suspected hole areas by using the contour and texture features of the suspected hole areas to obtain hole areas and areas to be determined; calculating a hole coefficient of the to-be-determined region based on the gray value distribution level of the pixel points in the to-be-determined region, and screening out a hole region in the to-be-determined region by using the hole coefficient; and performing quality evaluation on the aluminum alloy die casting by using the scale of the hole area contained in the surface of the aluminum alloy die casting. According to the invention, the detection accuracy of the hole defects in the aluminum alloy die casting is improved.

The utility model discloses a kind of multi-station visual inspection equipment, and it relates to visual inspection technical field.The multi-station visual inspection equipment includes bearing mechanism, drive mechanism and detection mechanism, bearing mechanism contains bearing mounting seat, rotatable bearing running part and multiple rotatable workpiece bearing parts;The running drive part of drive mechanism drives bearing running part to run, bearing drive part can be connected with corresponding workpiece bearing part and drive its rotation;Detection mechanism is arranged along bearing running part.The equipment realizes multi-station operation, when one workpiece is detected, other workpieces can be fed or discharged, break the single-station serial operation limit, greatly improve detection efficiency, effectively adapt production line rhythm, avoid workpiece stagnation.

The invention discloses an infrared remote control visual chart-oriented synchronous mirror image control vision examination auxiliary system, which comprises an infrared receiving and transmitting device and a PC terminal, the infrared receiving and transmitting device comprises a development board, an infrared receiving module and an infrared transmitting module, and the PC terminal comprises a PC and is equipped with a bar code or two-dimensional code scanning gun and a bar code thermal printer. The PC is connected to an internal network and is connected with the development board; a signal pin of the infrared receiving module is connected with a digital pin D3 of the development board, a signal pin of the infrared transmitting module is connected with a digital pin D2 of the development board, and power supply pins of the infrared receiving module and the infrared transmitting module are respectively connected with a 5V pin and a GND pin of the development board; coding analysis software for infrared remote control of the visual chart and synchronous mirror image software for the infrared remote control visual chart are written in the PC, an infrared signal analysis database is established through the coding analysis software, and the software receives and sends infrared coding data through a COM port and an infrared receiving and emitting device.

The utility model discloses a combined annular light source device and a visual inspection system, which are used for solving the technical problem that the existing annular light source device cannot simultaneously detect appearance defects and characters of a workpiece. The combined annular light source device comprises an outer shell, a light-transmitting through hole is formed in the outer shell in the extending direction of the central axis of the outer shell, the inner portion of the outer shell is divided into an upper annular inner side wall and a lower annular inner side wall, a high-angle irradiation module is installed on the upper annular inner side wall, and a high-angle irradiation module is installed on the lower annular inner side wall. A low-angle irradiation module is mounted on the lower annular inner side wall; wherein the high-angle irradiation module emits light along the light-transmitting through hole at a first irradiation angle, the low-angle irradiation module emits light along the light-transmitting through hole at a second irradiation angle, and the first irradiation angle is larger than the second irradiation angle.