Image acquisition system and defect detection system

Abstract

The utility model provides an image acquisition system and a defect detection system, and relates to the technical field of product detection. The image acquisition system comprises an internal detection mechanism and an external detection mechanism; the internal detection mechanism is arranged at a first detection position corresponding to the opening of the detected product; the internal detection mechanism is used for collecting an internal detection image of the detected product at the first moment; the external detection mechanism is arranged at a second detection position corresponding to the outer wall of the detected product; the external detection mechanism is used for collecting an external detection image of the detected product at a second moment; wherein the second detection position comprises n positions surrounding the detected product, and n is a positive integer greater than or equal to 3. The defect detection system comprises an image acquisition system and a processor; the processor is connected with the image acquisition system; and the processor is used for processing according to the received internal detection image and the external detection image acquired by the image acquisition system to obtain a defect detection result of the detected product.

Description

Technical Field

[0001] The present application relates to the technical field of product detection, and in particular to an image acquisition system and a defect detection system. Background Art

[0002] In the automotive parts, new energy, medical and other industries, when detecting minor defects on the inner and outer surfaces of some tubular products, such as scratches, breakages, dents, indentations, foreign matter on the surface, dirt, oil, etc., the current detection method is usually to detect by human eyes. For example, usually in the workshop, the product is manually held under an incandescent lamp, and the human eye views the product from different angles to confirm the defect through observation. Since the shape and position of the defect on the surface of the product are uncertain, the human eye needs to observe the product carefully, which takes a long time to inspect. Some small tubes are easily visually fatigued after long-term viewing, resulting in NG products being missed and outflowed. For the same product, different types of defect detection specifications are different. The human eye can only make judgments by constantly accumulating experience. There is no unified detection standard, and the output of the finished product is difficult to control the quality. In addition, the use of both hands to touch the product or turn the product may cause secondary damage to the product, resulting in the problem of defective scrapping of normal products. Therefore, the current defect detection cost of tubular products is high and the efficiency is low, which cannot meet the product control needs. Utility Model Content

[0003] In view of this, the purpose of the embodiments of the present application is to provide an image acquisition system and a defect detection system to improve the problems of high defect detection cost and low efficiency in the prior art.

[0004] In order to solve the above problems, in a first aspect, an embodiment of the present application provides an image acquisition system, the system comprising: an internal detection mechanism and an external detection mechanism;

[0005] The internal detection mechanism is arranged at a first detection position corresponding to the opening of the product under test; the internal detection mechanism is used to collect an internal detection image of the product under test at a first moment;

[0006] The external detection mechanism is arranged at a second detection position corresponding to the outer wall of the product under test; the external detection mechanism is used to collect an external detection image of the product under test at a second moment;

[0007] The second detection position includes n positions surrounding the product under test, and n is a positive integer greater than or equal to 3.

[0008] In the above implementation process, for the tested product with an opening, the internal detection mechanism can be set at the first detection position corresponding to its opening, so as to collect the internal detection image of the tested product at the first moment through the internal detection mechanism. A corresponding external detection mechanism can also be set at the second detection position corresponding to the outer wall of the tested product, so as to collect images of the outside of the tested product at the second moment, and obtain the corresponding external detection image. The image acquisition system provided by the present application can realize automatic non-contact detection, effectively reducing the adverse effects of manual detection on the tested product, and setting different detection moments for the two detection mechanisms can make the internal detection and external detection not affect each other, thereby improving the effectiveness of the internal detection image and the external detection image, and improving the efficiency and accuracy of defect detection based on the image. In addition, considering the three-dimensional situation outside the tested product, 3 or more positions surrounding the outside of the tested product can be set as the corresponding second detection position, so as to collect images of the outer wall of the tested product in all directions, so as to improve the comprehensiveness and effectiveness of the external detection image.

[0009] Optionally, the internal detection mechanism includes: a first camera and a first light source;

[0010] The first light source is used to illuminate the inner wall corresponding to the opening of the tested product at the first moment;

[0011] The first camera is used to capture the internal detection image corresponding to the inner wall under illumination.

[0012] In the above implementation process, the internal detection mechanism may include a first camera and a first light source. The first light source can illuminate the inner wall of the opening of the product under test at the first moment, so as to obtain the corresponding internal detection image under sufficient light by photographing the inner wall through the first camera, thereby reducing the adverse effects of the internal detection image caused by problems such as too dark light, effectively improving the quality of the internal detection image, and thus improving the effectiveness of defect detection on the inner wall of the product under test based on the internal detection image.

[0013] Optionally, the first light source includes a ring-shaped light source;

[0014] The annular light source is arranged around the first camera.

[0015] In the above implementation process, in order to provide the first camera with more sufficient shooting light, the first light source can be set as a ring-shaped light source, and the ring-shaped light source is set around the first camera, which effectively improves the uniformity and effectiveness of the first light source irradiating the inner wall of the product under test, thereby improving the quality of the internal inspection image.

[0016] Optionally, the external detection mechanism includes: a second light source and at least one second camera;

[0017] The second light source is used to illuminate the outer wall of the product under test at the second moment;

[0018] The second camera is used to capture the external detection image corresponding to the outer wall under illumination.

[0019] In the above implementation process, the external detection mechanism may include one or more second cameras and a second light source. The second light source can illuminate the outer wall of the product under test at the second moment, so as to obtain the corresponding external detection image under sufficient light by photographing the outer wall through the second camera, thereby reducing the adverse effects of the external detection image caused by problems such as too dark light, effectively improving the quality of the external detection image, and thus improving the effectiveness of defect detection on the outer wall of the product under test based on the external detection image.

[0020] Optionally, the external detection mechanism further comprises: a fill light source arranged around the outer wall of the product under test;

[0021] The fill light source is arranged at an inner ring position close to the product under test;

[0022] The second light source is arranged at a position close to the inner ring and away from the outer ring of the product under test;

[0023] The fill light source is used to provide fill light for the outer wall of the product under test at the second moment.

[0024] In the above implementation process, considering that the second detection position includes multiple positions, in order to provide more sufficient shooting light for the second camera at multiple positions, a corresponding fill light source can also be set. The second light source and the fill light source are arranged in a stacked ring around the product under test, and the fill light source is arranged at an inner ring position close to the product under test to illuminate the outer wall of the product under test at the second moment to provide corresponding fill light. The uniformity and effectiveness of the multiple light sources irradiating the outer wall of the product under test are effectively improved, thereby improving the quality of the external detection image.

[0025] Optionally, the second light source comprises a partitioned ring light source;

[0026] The partitioned ring light source is used to provide light to the multiple angular partitions corresponding to the outer wall at the second moment.

[0027] In the above implementation process, considering that the second detection position includes multiple positions, in order to provide more sufficient shooting light for the second camera at each position, the second light source can be set as a partitioned ring light source to provide light for multiple angle partitions corresponding to the outer wall of the product under test at the second moment. Sufficient light can be provided to each area for the second camera corresponding to the area to capture images, thereby effectively improving the quality of external detection images.

[0028] Optionally, the second camera includes n cameras;

[0029] A corresponding second camera is fixedly arranged at each second detection position;

[0030] Each of the second cameras is used to capture a corresponding sub-region image at the second moment, so as to obtain the external detection image composed of all the sub-region images.

[0031] In the above implementation process, considering that the second detection position includes multiple positions, in order to perform comprehensive image acquisition at multiple positions, a corresponding number of second cameras can be set according to the number of second detection positions, and each second camera can be fixedly set at the corresponding second detection position, so that the second cameras at multiple positions can perform image acquisition at the second moment, and simultaneously obtain sub-region images of multiple corresponding regions to obtain a complete external detection image composed of all sub-region images. Multiple second cameras can be used to perform partitioned detection on the outer wall of the product under test at the same time, effectively improving the acquisition efficiency of the external detection image and the integrity and effectiveness of the external detection image.

[0032] Optionally, the second moment includes a time interval consisting of multiple moments; the external detection mechanism further includes: a sliding track;

[0033] A fixing piece is provided on the sliding track, and a fixing position of the fixing piece corresponds to the second detection position; the second camera is fixed on the sliding track through the fixing piece;

[0034] The second camera is used to be fixed at each second detection position based on the fixing part, and to capture the corresponding sub-area image at each second detection position within the time interval to obtain the external detection image composed of all the sub-area images.

[0035] In the above implementation process, considering that the second detection position includes multiple positions, in order to realize the partition image acquisition at multiple positions, a corresponding sliding track can also be set, and a fixing member corresponding to the second detection position can be set, so that the second camera can be fixed at the corresponding multiple second detection positions on the sliding track through the fixing member, so that in the time interval corresponding to the second moment, the corresponding sub-region image and the complete external detection image composed of all sub-region images can be captured in sequence at each second detection position. The shooting position of the second camera can be adjusted by the sliding track and the fixing member, which reduces the number of second cameras, thereby reducing the cost of image acquisition system components while improving the integrity and effectiveness of the external detection image.

[0036] Optionally, the system further comprises: a first support member and a second support member;

[0037] The first support member is used to fix the internal detection mechanism at the first detection position;

[0038] The second supporting member is used to fix the external detection mechanism at the second detection position.

[0039] In the above implementation process, corresponding first supporting members and second supporting members can be respectively set to fix the internal detection mechanism and the external detection mechanism, so that the internal detection mechanism and the external detection mechanism can be fixed at the corresponding first detection position and the second detection position, respectively, thereby effectively improving the stability of the internal detection mechanism and the external detection mechanism during image acquisition, thereby improving the quality of the internal detection image and the external detection image.

[0040] In a second aspect, an embodiment of the present application further provides a defect detection system, the defect detection system comprising a processor and any one of the above-mentioned image acquisition systems;

[0041] The processor is connected to the image acquisition system;

[0042] The processor is used to process the internal detection image and the external detection image received by the image acquisition system to obtain the defect detection result of the tested product.

[0043] In the above implementation process, a processor that is communicatively connected to the image acquisition system can be set up to obtain internal detection images and external detection images acquired by the image acquisition system through the processor, and perform image recognition processing based on the internal detection images and the external detection images to obtain defect detection results of the product under test.

[0044] In summary, the embodiments of the present application provide an image acquisition system and a defect detection system. For a product under test with an opening, an internal detection mechanism is set at a first detection position corresponding to the opening, so that an internal detection image of the product under test is acquired at a first moment through the internal detection mechanism. A corresponding external detection mechanism is set at a second detection position corresponding to the outer wall of the product under test, so that an image of the exterior of the product under test is acquired at a second moment to obtain a corresponding external detection image. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram of the structure of an image acquisition system provided in an embodiment of the present application;

[0047] Figure 2 A schematic diagram of the structure of an internal detection mechanism provided in an embodiment of the present application;

[0048] Figure 3 A schematic diagram of the structure of a first external detection mechanism provided in an embodiment of the present application;

[0049] Figure 4 A schematic diagram of the structure of a second external detection mechanism provided in an embodiment of the present application;

[0050] Figure 5 A schematic diagram of the structure of another image acquisition system provided in an embodiment of the present application;

[0051] Figure 6 A schematic diagram of the structure of a defect detection system provided in an embodiment of the present application.

[0052] Icons: 100 - image acquisition system; 110 - internal detection mechanism; 111 - first camera; 112 - first light source; 120 - external detection mechanism; 121 - second light source; 122 - second camera; 123 - fill light source; 124 - sliding track; 125 - fixing member; 130 - first support member; 140 - second support member; 200 - processor. DETAILED DESCRIPTION

[0053] The technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0054] In the prior art, when inspecting some tubular products, due to limitations such as the angle of the tube body, manual visual inspection is usually used for inspection. However, the applicant found that manual inspection takes a long time, it is impossible to unify the inspection standards, and manual inspection may cause damage to the product when it comes into contact with the product, resulting in high cost and low efficiency for defect inspection of tubular products, which cannot meet the product control needs.

[0055] In order to solve the above problems, the present application provides an image acquisition system that can acquire images of the inside and outside of a tubular product under test. Figure 1 , Figure 1 This is a structural diagram of an image acquisition system provided in an embodiment of the present application. The image acquisition system 100 may include: an internal detection mechanism 110 and an external detection mechanism 120.

[0056] The internal detection mechanism 110 is set at a first detection position corresponding to the opening of the product under test; the internal detection mechanism 110 is used to collect the internal detection image of the product under test at a first moment. The external detection mechanism 120 is set at a second detection position corresponding to the outer wall of the product under test; the external detection mechanism 120 is used to collect the external detection image of the product under test at a second moment. The dotted lines in the figure represent the schematic field of view or range when the internal detection mechanism 110 and the external detection mechanism 120 perform image acquisition.

[0057] It should be noted that, for the two detection mechanisms with different functions, two different detection moments, the first moment and the second moment, are set respectively, so that the two detection mechanisms can perform internal detection and external detection alternately. Optionally, the first moment and the second moment can be set according to actual conditions and specific needs. For example, the first moment can be set before the second moment, so that the internal detection is completed first and then the external detection, or the external detection is completed first and then the internal detection, so that the internal detection and the external detection do not affect each other, thereby improving the effectiveness of the internal detection image and the external detection image, thereby improving the efficiency and accuracy of image-based defect detection.

[0058] Optionally, the product to be tested may be a product with openings and cavities of various shapes, including cylindrical tubular products with cavities, such as pipe parts such as water pipes, or rectangular tubular products with cavities, such as parts such as ventilation ducts, or products of various shapes such as bowl-shaped parts. The product to be tested may be fixed at the corresponding position to be tested by structures such as brackets and clamps, so as to determine the corresponding first detection position and second detection position according to the actual situation of the position to be tested and the product to be tested.

[0059] Optionally, the internal detection mechanism 110 and the external detection mechanism 120 may include a device with a photographing function, such as various types of cameras or webcams.

[0060] It should be noted that, considering the three-dimensional situation of the outside of the product under test, due to the diversity of defect shapes and sizes, the second detection position may include n positions surrounding the product under test, where n is a positive integer greater than or equal to 3. For example, when the product under test is a rectangular tubular product with a cavity, four second detection positions may be set to detect the four sides of the product under test respectively; when the product under test is a cylindrical tubular product with a cavity, three or four second detection positions may be set, and the three second detection positions are set at intervals of 120° around the product under test, and the four second detection positions are set at intervals of 90° around the product under test, so as to reduce the visual blind spot during detection and perform surrounding and comprehensive detection of the outside of the product under test.

[0061] Optionally, the specific positions of the first detection position and the second detection position can be set according to the actual situation of the product under test. For example, the first detection position is set at the focus position corresponding to the opening of the product under test, and the second detection position is set at the focus position of multiple partitions outside the product under test to improve the effectiveness of the detection image. For the same type of products under test, the same detection position can be used for detection. When the product under test is replaced, the detection position can be adjusted according to the actual situation of the new product under test.

[0062] exist Figure 1 In the illustrated embodiment, the image acquisition system 100 provided in the present application can realize automatic non-contact detection, effectively reducing the adverse effects of manual detection on the tested product.

[0063] Optionally, see Figure 2 , Figure 2A structural schematic diagram of an internal detection mechanism provided in an embodiment of the present application, wherein the internal detection mechanism 110 may include: a first camera 111 and a first light source 112. The first light source 112 is used to illuminate the inner wall corresponding to the opening of the product under test at the first moment; the first camera 111 is used to capture an internal detection image corresponding to the inner wall under the illumination condition. The first light source 112 can illuminate the inner wall of the opening of the product under test at the first moment, so as to obtain a corresponding internal detection image under sufficient light by capturing the inner wall through the first camera 111, thereby reducing the adverse effects on the internal detection image caused by problems such as too dark light, effectively improving the quality of the internal detection image, and thus improving the effectiveness of defect detection on the inner wall of the product under test based on the internal detection image.

[0064] For example, the first camera 111 may include an industrial camera and an endoscope lens. The industrial camera may include various types of industrial cameras such as a 2D high-frame area array industrial camera. The endoscope lens can select different field of view angles and focal lengths for image capture according to the actual situation of the product being tested. For example, it can be set according to parameters such as the shape, opening size, and cavity depth of the product being tested. The depth of field of the endoscope lens can increase with the increase of the diameter of the tube mouth, and can support a maximum tube mouth diameter of 120 mm. The maximum tube depth can reach 120 mm, and the image information of scratches, dents, dirt, etc. in the tube body can be clearly collected to meet different detection needs.

[0065] Optionally, in order to provide more sufficient shooting light for the first camera 111, the first light source 112 may include a ring-shaped light source; the ring-shaped light source is arranged around the first camera 111. The uniformity and effectiveness of the first light source 112 irradiating the inner wall of the product under test are effectively improved, thereby improving the quality of the internal detection image.

[0066] Optionally, when collecting the internal detection image at the first moment, the first light source 112 can be turned on first, and the first camera 111 takes an image after receiving the trigger signal. After the imaging is completed, the first light source 112 is turned off. A single product under test can be imaged once or multiple times to obtain a corresponding internal detection image.

[0067] Optionally, see Figure 3-Figure 4 , Figure 3 A schematic diagram of the structure of the first external detection mechanism provided in the embodiment of the present application, Figure 4 A schematic diagram of the structure of a second external detection mechanism provided in an embodiment of the present application.

[0068] The external detection mechanism 120 may include: a second light source 121 and at least one second camera 122. The second light source 121 is used to illuminate the outer wall of the product under test at the second moment; the second camera 122 is used to capture the external detection image corresponding to the outer wall under the illumination condition. The second light source 121 can illuminate the outer wall of the product under test at the second moment, so as to obtain the corresponding external detection image under the condition of sufficient light by capturing the outer wall through the second camera 122, thereby reducing the adverse effects on the external detection image caused by problems such as too dark light, effectively improving the quality of the external detection image, and thus improving the effectiveness of defect detection on the outer wall of the product under test based on the external detection image.

[0069] Optionally, the second camera 122 may include an industrial camera and a large depth of field lens. The industrial camera may include various types of industrial cameras such as a 2D high-frame array industrial camera. Within a wide range of distances, the large depth of field lens can clearly image objects whether they are close or far away from the lens, so as to improve the clarity of the external detection image.

[0070] Optionally, considering that the second detection position includes multiple positions, in order to provide more sufficient shooting light for the second camera 122 at multiple positions, the external detection mechanism 120 may also include: a fill light source 123 arranged around the outer wall of the product under test; the fill light source 123 is arranged at an inner ring position close to the product under test; the second light source 121 is arranged at an inner ring position close to the product under test and away from the outer ring position of the product under test; the fill light source 123 is used to provide fill light for the outer wall of the product under test at the second moment. The second light source 121 and the fill light source 123 are arranged in a stacked ring around the product under test, and the fill light source 123 is arranged at an inner ring position close to the product under test to illuminate the outer wall of the product under test at the second moment to provide corresponding fill light. The uniformity and effectiveness of the multiple light sources irradiating the outer wall of the product under test are effectively improved, thereby improving the quality of the external detection image.

[0071] Optionally, taking the case where the product to be tested is a cylindrical tubular object, in order to improve the comprehensiveness of the fill light, the fill light source 123 may also be configured as a corresponding ring-shaped light source.

[0072] Optionally, considering that the second detection position includes multiple positions, in order to provide more sufficient shooting light for the second camera 122 at each position, the second light source 121 may include a partitioned ring-shaped light source; the partitioned ring-shaped light source is used to provide light for multiple angle partitions corresponding to the outer wall at the second moment. The second light source 121 can be set as a partitioned ring-shaped light source to provide light for multiple angle partitions corresponding to the outer wall of the product under test at the second moment, and can provide sufficient light for each area for the second camera 122 corresponding to the area to take images, effectively improving the quality of the external detection image.

[0073] For example, the specific partitioning situation of the partitioned ring-type light source can be set according to the number of second detection positions. For example, when four second detection positions are set at intervals of 90°, the partitioned ring-type light source can include an 8-partitioned ring-type light source, which can achieve dead-angle detection at the four detection positions. The 8-partitioned light source can be set along 360° of the outer wall of the product to be tested, and the angle partitioning can be determined according to the partitioning situation. For example, every 45° is set as a partition angle and lit.

[0074] Optionally, when collecting the external detection image at the second moment, the fill light source 123 and the second light source 121 can be turned on first, and the second camera 122 performs partitioned multi-angle imaging after receiving the trigger signal to obtain multiple sub-area images. For example, when the second light source 121 is an 8-partition ring light source, each second detection position has 2 angle partitions, and each second detection position can collect two sub-area images based on the 2 angle partitions, respectively, and finally 8 sub-area images are obtained to form a complete external detection image.

[0075] Optionally, see Figure 3 Considering that the second detection position includes multiple positions, in order to perform comprehensive image acquisition at multiple positions, the second camera 122 may include n cameras ( Figure 3 Only 4 are shown, and the other numbers are not repeated). A corresponding second camera 122 is fixedly arranged at each second detection position; each second camera 122 is used to capture a corresponding sub-region image at the second moment, and obtain an external detection image composed of all sub-region images. A corresponding number of second cameras 122 can be set according to the number of second detection positions, and each second camera 122 can be fixedly arranged at a corresponding second detection position through a structure such as a bracket, so that the second cameras 122 at multiple positions can perform image acquisition at the second moment, and simultaneously obtain sub-region images of multiple corresponding areas, and obtain a complete external detection image composed of all sub-region images. Multiple second cameras 122 can be used to simultaneously perform partitioned detection on the outer wall of the product under test, effectively improving the acquisition efficiency of the external detection image as well as the integrity and effectiveness of the external detection image.

[0076] Optionally, see Figure 4 Considering that the second detection position includes multiple positions, in order to realize partition image acquisition at multiple positions, the external detection mechanism 120 may further include: a sliding track 124, and the second moment may include a time interval composed of multiple moments.

[0077] Among them, a fixing part 125 is provided on the sliding track 124, and the fixed position of the fixing part 125 corresponds to the second detection position; the second camera 122 is fixed on the sliding track 124 through the fixing part 125; the second camera 122 is used to be fixed at each second detection position based on the fixing part 125, and within a time interval, at each second detection position, take a corresponding sub-area image to obtain an external detection image composed of all sub-area images.

[0078] It should be noted that the number of the second cameras 122 can be less than the number of the second detection positions. For example, when there are 4 second detection positions, only one second camera 122 can be set for detection. The set sliding track 124 passes through all the second detection positions, and the second camera 122 is slidably fixed with the sliding track 124, and can slide on the sliding track 124 to slide to multiple second detection positions. In addition, in order to improve the stability during shooting, a fixing member 125 can also be set to fix the second camera 122 at the corresponding second detection position for fixed shooting. Accordingly, since the number of the second cameras 122 is small, it is impossible to complete the image acquisition of multiple partitions at the same time, and the second moment can be set to the corresponding time interval, for example, the second moment is set to a time interval of 10 seconds, and the second camera 122 is fixed to the corresponding multiple second detection positions on the sliding track 124 by the fixing member 125, so that in the time interval corresponding to the second moment, the corresponding sub-area image is captured at each second detection position in turn, and a complete external detection image composed of all sub-area images is obtained. The shooting position of the second camera 122 can be adjusted by the sliding rail 124 and the fixing member 125 , thereby reducing the number of second cameras 122 , thereby reducing the device cost of the image acquisition system 100 and improving the integrity and effectiveness of the external detection image.

[0079] Optionally, the sliding track 124 can be fixed on the platform or base by a structure such as a bracket, and the track track of the sliding track 124 can also be set and adjusted according to the specific conditions of the second detection position, so that the sliding track 124 can pass through all the second detection positions. Figure 4 Only one example of a circular track is shown, and other shapes are not described in detail.

[0080] Optionally, the setting method of the fixing member 125 can be set according to specific circumstances and actual needs. The number of fixing members 125 can be the same as the number of second cameras 122. For example, only one fixing member 125 is set, and the fixing member 125 can move with the second camera 122 to fix the second camera 122 when the second camera 122 slides to the corresponding second detection position. The number of fixing members 125 can also correspond to the number of second detection positions. For example, four fixing members 125 can be set, and one fixing member 125 fixedly connected to the sliding track 124 can be set at each of the four second detection positions to fix the second camera 122 when the second camera 122 slides to the corresponding second detection position. Figure 4 Only one structure in which four fixing members 125 are arranged according to four second detection positions is shown, and other structures are not described in detail. The fixing member 125 can be arranged as a corresponding clamping claw, a locking buckle, a screw nut or the like.

[0081] Optionally, the second camera 122 may be moved to a corresponding second detection position for image acquisition by means of an adjustable bracket, a mechanical arm capable of automatically adjusting its position, or the like.

[0082] Optionally, based on the sliding of the second camera 122 on the sliding track 124, an external detection image can also be obtained by surround shooting.

[0083] Optionally, in actual application scenarios, the Figure 3 and Figure 4 In the embodiment shown in the figure, for example, when the user needs to reduce the detection cost, he can choose Figure 4 In the embodiment shown, when the user needs to improve the detection efficiency, he can choose Figure 3 The embodiment shown.

[0084] See also Figure 5 , Figure 5The structural diagram of another image acquisition system provided in the embodiment of the present application, the image acquisition system 100 may also include: a first support member 130 and a second support member 140. The first support member 130 and the second support member 140 may be arranged on a base or platform at the bottom, the first support member 130 is used to fix the internal detection mechanism 110 at the first detection position; the second support member 140 is used to fix the external detection mechanism 120 at the second detection position. The corresponding first support member 130 and the second support member 140 may be respectively arranged to fix the internal detection mechanism 110 and the external detection mechanism 120, so as to fix the internal detection mechanism 110 and the external detection mechanism 120 at the corresponding first detection position and the second detection position, respectively, effectively improving the stability of the internal detection mechanism 110 and the external detection mechanism 120 when performing image acquisition, thereby improving the quality of the internal detection image and the external detection image.

[0085] Optionally, the first support member 130 and the second support member 140 can be configured as various types of structures such as corresponding support platforms, mechanical arms, connecting rods, etc.

[0086] See also Figure 6 , Figure 6 A structural diagram of a defect detection system provided in an embodiment of the present application, the defect detection system may include a processor 200 (for example, disposed outside the image acquisition system 100 and communicating with the image acquisition system 100), and Figure 1-Figure 5 The image acquisition system 100 as described above.

[0087] Among them, the processor 200 can be connected to the image acquisition system 100 for communication via the network / Bluetooth or the like. After the image acquisition system 100 acquires the corresponding internal detection images and external detection images, the internal detection images and the external detection images can be sent to the processor 200 for processing via the communication connection. The processor 200 is used to perform image recognition processing based on the received internal detection images and external detection images to obtain defect detection results of the tested product, and send the defect detection results to different receiving ends as required.

[0088] Optionally, the processor 200 can be configured as an electronic device with logical computing functions such as a server, a personal computer (PC), a tablet computer, a smart phone, a personal digital assistant (PDA), etc., and a corresponding image recognition program is provided in the electronic device to implement defect detection processing.

[0089] In addition, the various parts in the various embodiments of the present application can be integrated together to form an independent part, or the various parts can exist separately, or two or more parts can be integrated to form an independent part.

[0090] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0091] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, article or device including the elements.

Claims

1. An image acquisition system, characterized in that: The system comprises: an internal detection mechanism and an external detection mechanism; The internal detection mechanism is arranged at a first detection position corresponding to the opening of the product under test; the internal detection mechanism is used to collect an internal detection image of the product under test at a first moment; The external detection mechanism is arranged at a second detection position corresponding to the outer wall of the product under test; the external detection mechanism is used to collect an external detection image of the product under test at a second moment; The second detection position includes n positions surrounding the product under test, and n is a positive integer greater than or equal to 3.

2. The system according to claim 1, characterized in that The internal detection mechanism includes: a first camera and a first light source; The first light source is used to illuminate the inner wall corresponding to the opening of the tested product at the first moment; The first camera is used to capture the internal detection image corresponding to the inner wall under illumination.

3. The system according to claim 2, characterized in that in, The first light source comprises a ring-shaped light source; The annular light source is arranged around the first camera.

4. The system according to claim 1, characterized in that The external detection mechanism includes: a second light source and at least one second camera; The second light source is used to illuminate the outer wall of the product under test at the second moment; The second camera is used to capture the external detection image corresponding to the outer wall under illumination.

5. The system according to claim 4, characterized in that in, The external detection mechanism further includes: a fill light source arranged around the outer wall of the product under test; The fill light source is arranged at an inner ring position close to the product under test; The second light source is arranged at a position close to the inner ring and away from the outer ring of the product under test; The fill light source is used to provide fill light for the outer wall of the product under test at the second moment.

6. The system according to claim 4, characterized in that in, The second light source includes a partitioned ring light source; The partitioned ring light source is used to provide light to the multiple angular partitions corresponding to the outer wall at the second moment.

7. The system according to claim 4, characterized in that in, The second camera includes n cameras; A corresponding second camera is fixedly arranged at each second detection position; Each of the second cameras is used to capture a corresponding sub-region image at the second moment, so as to obtain the external detection image composed of all the sub-region images.

8. The system according to claim 4, characterized in that in, The second moment includes a time interval consisting of multiple moments; the external detection mechanism also includes: a sliding track; A fixing piece is provided on the sliding track, and a fixing position of the fixing piece corresponds to the second detection position; the second camera is fixed on the sliding track through the fixing piece; The second camera is used to be fixed at each second detection position based on the fixing part, and to capture the corresponding sub-area image at each second detection position within the time interval to obtain the external detection image composed of all the sub-area images.

9. The system according to any one of claims 1 to 8, characterized in that: The system further comprises: a first support member and a second support member; The first support member is used to fix the internal detection mechanism at the first detection position; The second supporting member is used to fix the external detection mechanism at the second detection position.

10. A defect detection system, characterized in that: The defect detection system comprises a processor and an image acquisition system as described in any one of claims 1 to 9; The processor is connected to the image acquisition system; The processor is used to process the internal detection image and the external detection image received by the image acquisition system to obtain the defect detection result of the tested product.

Images