A vehicle seat surface defect detection system based on machine vision

Abstract

The application discloses a kind of whole vehicle seat surface defect detection systems based on machine vision, including rectangular hollow base, automobile transmission mechanism, photoelectric opposite shooting mechanism, four groups of movable vision acquisition mechanism, two groups of fixed vision acquisition mechanism and control detection cabinet, the rectangular hollow base is horizontally arranged, and the drive mechanism rectangular through slot is reserved in the middle position of top, and the vision detection mechanism rectangular recess is symmetrically reserved in the both sides of top, the automobile transmission mechanism is fixedly installed in the inside of rectangular hollow base, the image acquisition of the surface of whole vehicle seat of single station can be completed in this application, and the automatic detection work of the surface defect of whole vehicle seat is realized by size measurement, target detection technology, not only effectively reduce work station and human resources, but also can greatly improve work efficiency, improve automation level, reduce production cost, while it can also be applicable to the seat surface defect detection of multiple vehicle models, and ensure detection accuracy, effectively avoid the problem of missed detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of whole vehicle interior quality monitoring, and particularly relates to a whole vehicle seat surface defect detection system based on machine vision. BACKGROUND

[0002] In the field of automobile manufacturing today, more than 90% of the production and manufacturing processes have realized artificial intelligence production; however, in the field of whole vehicle quality monitoring and detection, the intelligent level is still relatively backward, and a large amount of manpower needs to be invested to match the production and manufacturing speed to meet the mass production demand.

[0003] The automobile seat is an important part of the whole vehicle, and some small surface defects such as scratches, wrinkles, broken skin, bulges and wear are easily caused during transportation and whole vehicle assembly after production. As a delivery vehicle, it will seriously affect the product competitiveness. The seat detection device in the prior art only supports independent seats that have not been assembled into a whole vehicle, and cannot detect the interior seats of the assembled vehicle. At present, most automobile manufacturers still rely on manual inspection to control the quality of the surface of the whole vehicle seat, and record the photos taken by the handheld camera. The repair personnel perform secondary repair on the surface of the whole vehicle seat according to the photos to ensure product quality. This quality control method has high working intensity, has caused secondary damage, and is low in efficiency and monotonous in operation, and the staff is prone to fatigue. At the same time, there are frequent problems of missed detection, and the efficiency and quality are difficult to meet the demand. In order to ensure the mass production level and meet the order demand, manufacturers often need to spend a lot of manpower, and the personnel recruitment and management are difficult, and the cost is extremely high.

[0004] Therefore, the design and development of a high-efficiency and high-quality whole vehicle seat quality detection system has become the demand of many automobile enterprises. SUMMARY

[0005] The present application aims to provide a solution to the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A vehicle seat surface defect detection system based on machine vision, comprising a rectangular hollow base, an automobile transmission mechanism, a photoelectric opposite shooting mechanism, four groups of mobile visual acquisition mechanisms, two groups of fixed visual acquisition mechanisms and a control detection cabinet, the rectangular hollow base is horizontally arranged, and the transmission mechanism rectangular through slot is reserved in the central position of the top of the rectangular hollow base, the visual acquisition mechanism rectangular grooves are symmetrically reserved on both sides of the top of the rectangular hollow base, the automobile transmission mechanism is fixedly installed inside the rectangular hollow base, and the top of the automobile transmission mechanism penetrates through the transmission mechanism rectangular through slot and is arranged flush with the top surface of the top of the rectangular hollow base, the photoelectric opposite shooting mechanism is vertically and fixedly installed on the top of the rectangular hollow base, and symmetrically arranged across the transmission mechanism rectangular through slot, the four groups of mobile visual acquisition mechanisms are vertically installed at the top of the visual acquisition mechanism rectangular grooves on the top of the rectangular hollow base, and two groups are installed in each rectangular groove, the two groups of fixed visual acquisition mechanisms are vertically and symmetrically fixedly installed on the top of the rectangular hollow base outside the visual acquisition mechanism rectangular through slot, and the control detection cabinet is fixedly installed on one side of the top of the rectangular hollow base, and the control detection cabinet is electrically connected with the automobile transmission mechanism, the photoelectric opposite shooting mechanism, the four groups of mobile visual acquisition mechanisms and the two groups of fixed visual acquisition mechanisms respectively.

[0008] As a preferred scheme of the present application: the automobile transmission mechanism comprises a plate chain panel, two chain plate chains, four bearing seats, two transmission shafts, four plate chain wheels, a driving motor, a motor connecting shaft, a driving pulley, a driven pulley, a belt and a supporting device supporting the plate chain structure, the supporting device comprises two bottom layer support steel structures, three middle layer support steel structures and two upper layer support steel structures, the two bottom layer support steel structures are fixed symmetrically on the inner bottom wall upper portion of the rectangular hollow base along the length direction of the transmission mechanism rectangular through slot, the three middle layer support steel structures are fixed horizontally on the upper surfaces of the two bottom layer support steel structures, and the three middle layer support steel structures are equidistantly arranged between the bottom layer support steel structures and parallel to the bottom layer support steel structures at an angle of 90°, the two upper layer support steel structures are fixed horizontally on the upper surfaces of the three middle layer support steel structures, and the two upper layer support steel structures are arranged at an angle of 90° with the middle layer support steel structures, the four bearing seats are fixed and installed on the upper surfaces of the bottom layer support steel structures, and the four bearing seats are symmetrically distributed in the four corner directions of the transmission mechanism rectangular through slot, the two transmission shafts are installed through rolling bearings between the two bearing seats on the same side, and the two transmission shafts are arranged in parallel, the four plate chain wheels are fixedly sleeved on the outside of the two transmission shafts, each transmission shaft is sleeved with two plate chain wheels, and the plate chain wheels and the upper layer support steel structures are located in the same vertical plane, the two chain plate chains are transmissionally sleeved on the outside of the plate chain wheels, each group of plate chain wheels located in the same vertical plane transmissionally sleeves one chain plate chain on the outside, a circle of plate chain panels is horizontally installed on the outside of each group of plate chain wheels, the upper portion of the plate chain panel penetrates through the transmission mechanism rectangular through slot and is arranged in the same plane with the upper surface of the top wall of the rectangular hollow base, the motor connecting shaft is horizontally and fixedly installed on one of the bottom layer support steel structures through a rolling bearing, the driven pulley is fixedly installed on one end of one of the transmission shafts, the driving pulley is fixedly installed on one end of the motor connecting shaft, and the driving pulley and the driven pulley are located in the same vertical plane and are connected through the belt, and the driving motor is fixedly installed on the upper portion of the inner bottom wall of the rectangular hollow base through a motor base, and the rotating shaft of the driving motor is fixedly connected with the other end of the motor connecting shaft.

[0009] As a further preferred scheme of the present application: the photoelectric opposition mechanism comprises two photoelectric opposition supports, an infrared emitter and an infrared receiver, the bottom portions of the two photoelectric opposition supports are fixedly installed on the upper surface of the rectangular hollow base, are symmetrically arranged on the two sides of the transmission mechanism rectangular through slot and are located at the ends along the plate chain conveying direction, the infrared emitter is installed on one of the photoelectric opposition supports, the infrared receiver is installed on the other photoelectric opposition support, and the infrared emitter and the infrared receiver are arranged in opposition.

[0010] As a further preferred aspect of the present application: the control detection cabinet comprises a cabinet body, a touch display screen, a power switch, a controller, a visual processor, the cabinet body is vertically fixedly installed on the top wall of the rectangular hollow base, the touch display screen and the power switch are both fixedly installed on the side of the cabinet body away from the transmission mechanism, the controller and the visual processor are fixedly installed inside the cabinet body, and the controller is electrically connected with the power switch, the touch display screen, the visual processor, the infrared emitter, the infrared receiver, the linear slide guide electric module, the vertical adjustment electric push rod, the transverse adjustment electric push rod, the electric angle adjuster, the ring-shaped light source, the first industrial camera and the driving motor, and the visual processor is electrically connected with the first industrial camera and the second industrial camera.

[0011] As a further preferred aspect of the present application: the control detection cabinet further comprises a loudspeaker and a state indicating lamp, the loudspeaker is fixedly installed on an outer side of the cabinet body, and the state indicating lamp is vertically fixedly installed on the top of the cabinet body, and the state indicating lamp and the loudspeaker are both electrically connected with the controller.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. The photoelectric shooting mechanism is arranged on both sides of the vehicle to be detected, and can be used to accurately determine whether the vehicle to be detected reaches the specified position. When the vehicle blocks the light between the laser emitter and the receiver, the controller receives the vehicle positioning signal and sends a pause transmission instruction to the transmission mechanism in time, without operation, and automatically starts the whole vehicle seat surface defect detection function.

[0014] 2. The two groups of fixed visual acquisition mechanisms can acquire digital image data of the side windows of the vehicle, and the processor calculates and pre-processes the image: gray scale, uses an open operation filter based on geometric operation to eliminate burr noise, and image binarization; the upper and lower edge pixel points of the window and the glass edge pixel points are extracted by using the Laplacian operator edge detection algorithm, and the opening ratio of the window is calculated; the window height position of the measured vehicle type is fixed, and the window size is fixed, so the height of the glass edge from the upper surface of the rectangular hollow base can be calculated, and compared with the preset minimum window opening height, to automatically determine whether the current window opening degree meets the interior seat image acquisition condition, to prevent the equipment from colliding with the window.

[0015] 3、Four groups of mobile visual acquisition mechanisms are used to drive the camera to the specified point for acquiring digital image data of the seat cushion and the seat back. When the system is used for the first time or a new vehicle model appears, the mobile visual acquisition mechanism can be manually driven through the touch display screen to make the camera reach the appropriate acquisition point, and the position is set as the calibration camera specified movement point, so that the new vehicle model point calibration work is completed, thereby making the system applicable to seat surface defect detection of various vehicle models and improving the robustness of the system. The acquisition process controls the ring light source and the camera exposure synchronously to ensure the image quality. For the acquired digital image data, the processor is used for calculation, so that the detection and positioning of defects such as scratches, wrinkles, broken skin, bulges and wear on the seat surface of different colors and textures are completed. The calculation method is based on the YOLOv5 algorithm, the feature map is divided into three parts through the SPPF (spatial pyramid pooling fast) structure in the backbone network, and then the different features are extracted through 5x5 convolution pooling, and the feature maps are spliced to fuse the feature map information of different scales. The backbone network uses a residual network structure, the input feature map size is equal to the output feature map size, the network depth is increased to extract more features, and batch normalization operations are interspersed between the convolution layers to speed up the network. At the data level, 210 seat images containing defects (scratches, wrinkles, broken skin, bulges and wear) and 1200 non-defect seat images are actually collected and selected as a data set. The defect images are divided into a training set, a verification set and a test set in a ratio of 4:1:1, and the training set is subjected to data enhancement. The method has high detection accuracy and can effectively avoid the problem of missed detection, thereby improving the product competitiveness.

[0016] 4、The designed control detection cabinet contains a loudspeaker, an indicator light and a touch display screen. When the measured vehicle window does not meet the acquisition conditions, the loudspeaker is used for early warning and the touch display screen is used for displaying the specific position of the vehicle window, and the indicator light is used for displaying the current system working state. The touch display screen can be used to quickly complete the camera point calibration work of the new vehicle model, thereby reducing the operation difficulty and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 The structure diagram of the vehicle seat surface defect detection system based on machine vision is provided.

[0018] Fig. 2 The structure diagram of the vehicle seat surface defect detection system based on machine vision is provided.

[0019] Fig. 3 The structure diagram of the photoelectric transceiver mechanism is provided.

[0020] Fig. 4 The structure diagram of the mobile visual acquisition mechanism is provided.

[0021] Fig. 5 It is a structural schematic view of the fixed visual acquisition mechanism.

[0022] Fig. 6 It is a structural schematic view of the control detection cabinet.

[0023] In the figure: 1 rectangular hollow base, 101 transmission mechanism rectangular through slot, 102 visual acquisition mechanism rectangular groove, 103 adapter plate, 2 automobile transmission mechanism, 201 plate chain panel, 202 chain plate chain, 203 bearing seat, 204 transmission shaft, 205 plate chain wheel, 206 drive motor, 207 motor connecting shaft, 208 driving pulley, 209 driven pulley, 210 belt, 211 bottom layer support steel structure, 212 middle layer support steel structure, 213 upper layer support steel structure, 3 photoelectric counter mechanism, 301 photoelectric counter support, 302 infrared emitter, 303 infrared receiver, 4 mobile visual acquisition mechanism, 401 linear slide guide electric module, 402 vertical adjustment electric push rod, 403 moving seat, 404 horizontal adjustment electric push rod, 405 electric angle adjuster, 406 ring light source, 407 first industrial camera, 5 fixed visual acquisition mechanism, 501 camera support, 502 second industrial camera, 6 control detection cabinet, 601 cabinet body, 602 touch display screen, 603 power switch, 604 controller, 605 vision processor, 606 loudspeaker, 607 status indicator light. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like 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 application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figs. 1-2 As shown, a machine vision-based vehicle seat surface defect detection system includes a rectangular hollow base 1, an automotive transmission mechanism 2, a photoelectric beam-through mechanism 3, four sets of mobile vision acquisition mechanisms 4, two sets of fixed vision acquisition mechanisms 5, and a control and detection cabinet 6. The rectangular hollow base 1 is horizontally arranged, and a rectangular through slot for the transmission mechanism is reserved in the center of the top of the rectangular hollow base 1. Rectangular grooves for the vision acquisition mechanisms are symmetrically reserved on both sides of the top of the rectangular hollow base 1. The automotive transmission mechanism 2 is fixedly installed inside the rectangular hollow base 1, and the top of the automotive transmission mechanism 2 passes through the rectangular through slot of the transmission mechanism and is flush with the top surface of the rectangular hollow base 1. The photoelectric beam-through mechanism 3 is vertically and fixedly installed on the top of the rectangular hollow base 1. The four sets of mobile visual acquisition mechanisms 4 are vertically installed at the bottom of the top of the rectangular hollow base 1 in the rectangular groove 102 of the visual acquisition mechanism, and two sets are installed in each rectangular groove for acquiring images of the interior seat surface of the car. The two sets of fixed visual acquisition mechanisms 5 are vertically symmetrical and fixedly installed on the top of the rectangular hollow base 1, located outside the rectangular groove 101 of the visual acquisition mechanism, for acquiring images of the side windows of the car. The control and detection cabinet 6 is fixedly installed on one side of the top of the rectangular hollow base 1, and the control and detection cabinet 6 is electrically connected to the car transmission mechanism 2, the photoelectric beam mechanism 3, the four sets of mobile visual acquisition mechanisms 4, and the two sets of fixed visual acquisition mechanisms 5.

[0028] The automobile transmission mechanism 2 comprises a plate chain panel 201, two chain plate chains 202, four bearing seats 203, two transmission shafts 204, four plate chain wheels 205, a driving motor 206, a motor connecting shaft 207, a driving pulley 208, a driven pulley 209, a belt 210, and a supporting device for supporting the plate chain structure, wherein the supporting device comprises two bottom layer supporting steel structures 211, three middle layer supporting steel structures 212, and two upper layer supporting steel structures 213, the two bottom layer supporting steel structures 211 are symmetrically fixed on the upper part of the inner bottom wall of the rectangular hollow base 1 along the length direction of the transmission mechanism rectangular through slot 101, the three middle layer supporting steel structures 212 are horizontally fixed on the upper surfaces of the two bottom layer supporting steel structures 211, the three middle layer supporting steel structures 212 are equidistantly arranged between the two bottom layer supporting steel structures 211 and are parallelly arranged at 90° with the bottom layer supporting steel structures 211, the two upper layer supporting steel structures 213 are horizontally fixed on the upper surfaces of the three middle layer supporting steel structures 212, and the two upper layer supporting steel structures 213 are arranged at 90° with the middle layer supporting steel structures 212, the four bearing seats 203 are fixedly installed on the upper surfaces of the bottom layer supporting steel structures 211, and the four bearing seats are symmetrically distributed at the four corner directions of the transmission mechanism rectangular through slot 101, the two transmission shafts 204 are installed through rolling bearings between the two bearing seats 203 on the same side, and the two transmission shafts 204 are parallelly arranged, the four plate chain wheels 205 are fixedly sleeved on the outside of the two transmission shafts 204, each transmission shaft 204 is sleeved with two plate chain wheels 205, and the plate chain wheels 205 are located in the same vertical plane with the upper layer supporting steel structures 213, the two chain plate chains 202 are transmissionally sleeved on the outside of the plate chain wheels 205, one chain plate chain 202 is transmissionally sleeved on the outside of each group of plate chain wheels 205 located in the same vertical plane, a circle of plate chain panels 201 is horizontally installed on the outside of the chain plate chain 202, the upper part of the plate chain panel 201 penetrates through the transmission mechanism rectangular through slot 101 and is arranged in the same plane with the upper surface of the top wall of the rectangular hollow base 1, the motor connecting shaft 207 is horizontally and fixedly installed on one of the bottom layer supporting steel structures 211 through a rolling bearing, the driven pulley 209 is fixedly installed on one end of one of the transmission shafts 204, the driving pulley 208 is fixedly installed on one end of the motor connecting shaft 207, the driving pulley 208 and the driven pulley 209 are located in the same vertical plane and are transmissionally connected through the belt 210, the driving motor 206 is fixedly installed on the upper part of the inner bottom wall of the rectangular hollow base 1 through a motor base, and the rotating shaft of the driving motor 206 is fixedly connected with the other end of the motor connecting shaft 207.

[0029] The photoelectric opposition mechanism 3 includes two photoelectric opposition supports 301, an infrared emitter 302, an infrared receiver 303, and two photoelectric opposition supports 201, which are fixedly installed on the upper surface of the rectangular hollow base 1, symmetrically arranged on both sides of the transmission mechanism rectangular through slot 101, and located at the end along the direction of the plate chain transmission. The infrared emitter 302 is installed on one photoelectric opposition support 201, and the infrared receiver 303 is installed on the other photoelectric opposition support 301. The infrared emitter 302 and the infrared receiver 303 are arranged in opposition.

[0030] Two horizontally and symmetrically arranged abutment plates 103 are fixedly installed at the upper part of the transmission mechanism rectangular through slot 101 along the transmission direction. Both of the abutment plates 103 are parallel and attached to the plate chain panel 201.

[0031] Each group of the mobile visual acquisition mechanism 4 includes a linear slide guide electric module 401, a vertical adjustment electric push rod 402, a moving seat 403, a horizontal adjustment electric push rod 404, an electric angle adjuster 405, a ring light source 506, and a first industrial camera 407. The guide rail of the linear slide guide electric module 401 is fixedly installed in the visual acquisition mechanism rectangular groove 102 at the top of the rectangular hollow base 1. The vertical adjustment electric push rod 402 is vertically fixedly installed on the upper surface of the slide block of the linear slide guide electric module 401. The moving seat 403 is fixedly connected to the telescopic end of the vertical adjustment electric push rod 402. The horizontal adjustment electric push rod 404 is horizontally fixedly installed on the moving seat 403. The electric angle adjuster 405 is fixedly connected to the telescopic end of the horizontal adjustment electric push rod 404. The ring light source 406 is fixedly installed on the outer side wall of the electric angle adjuster 405. The industrial camera is fixedly installed on the outer side wall of the electric angle adjuster 405 and located in the inner ring center of the ring light source 406.

[0032] Each group of the fixed visual acquisition mechanism 5 includes a camera support 501 and a second industrial camera 502. The camera support is fixedly installed on the upper surface of the rectangular hollow base 1 and located outside the moving visual acquisition mechanism groove 102. The second industrial camera 502 is horizontally fixedly installed on the upper end side of the camera support 501, and the camera lens is horizontally arranged towards the direction of the automobile transmission mechanism 2.

[0033] The control detection cabinet 6 comprises a cabinet body 601, a touch display screen 602, a power switch 603, a controller 604 and a visual processor 605, the cabinet body 601 is vertically fixedly installed on the top wall of the upper part of the rectangular hollow base 1, the touch display screen 602 and the power switch 603 are both fixedly installed on the side of the cabinet body 601 away from the transmission mechanism 2, the controller 604 and the visual processor 605 are fixedly installed in the interior of the cabinet body 601, and the controller 604 is electrically connected with the power switch 603, the touch display screen 602, the visual processor 605, the infrared emitter 302, the infrared receiver 303, the linear sliding block guide rail electric module 401, the vertical adjustment electric push rod 402, the transverse adjustment electric push rod 404, the electric angle adjuster 405, the ring-shaped light source 406, the first industrial camera 407 and the second industrial camera 502.

[0034] The control detection cabinet 6 further comprises a loudspeaker 606 and a state indicating lamp 607, the loudspeaker 606 is fixedly installed on an outer side of the cabinet body 601, and the state indicating lamp 607 is vertically fixedly installed on the top of the cabinet body 601, and the state indicating lamp 607 and the loudspeaker 606 are electrically connected with the controller 604.

[0035] In the present application, when it is necessary to detect the surface defects of the seats of a vehicle, the specific operation steps are as follows:

[0036] S1: start the system, when the detected vehicle blocks the light between the laser emitter and the receiver, the controller receives the vehicle positioning signal, sends the transmission pause instruction to the transmission mechanism, and sends the start instruction to the fixed visual acquisition mechanism;

[0037] S2: the fixed visual acquisition mechanism receives the start instruction, completes the acquisition and output of the vehicle side image;

[0038] S3: the processor receives the vehicle side digital image data, determines the current four window opening height based on the visual detection method through image processing and model calculation;

[0039] S4: judge whether the opening height of each window meets the interior image acquisition condition, that is, whether the opening height of the four windows is lower than the preset window opening height, if there is a window that does not meet the condition, the controller sends the start alarm instruction to the indicating lamp and the loudspeaker, and displays the position of the window that does not meet the condition on the touch screen, and alarms the operator to open the corresponding window; otherwise, S5 is entered;

[0040] S5: the controller sends a driving instruction to the mobile visual acquisition mechanism, controls the linear slide guide electric module, the vertical adjustment electric push rod and the transverse adjustment electric push rod according to a preset track, so that the four industrial cameras and the annular light source enter the vehicle through the window and reach a preset acquisition point;

[0041] S6: the controller sends an acquisition instruction to the mobile visual acquisition mechanism, pre-sets an exposure time of the industrial camera, ensures that the light source illumination time and the exposure time are consistent, controls the exposure of the four industrial cameras and the start of the annular light source, and completes the acquisition and output of the seat cushion image;

[0042] S7: the controller sends a driving instruction to the mobile visual acquisition mechanism and sends a rotating instruction to the electric angle adjuster, controls the camera and the light source to rotate clockwise or counterclockwise by 80°;

[0043] S8: the controller sends an acquisition instruction to the mobile visual acquisition mechanism, controls the exposure of the four industrial cameras and the start of the annular light source again, and completes the acquisition and output of the seat back image;

[0044] S9: the controller sends a reset instruction to the mobile visual acquisition mechanism, controls the linear slide guide electric module, the vertical adjustment electric push rod, the transverse adjustment electric push rod and the electric angle adjuster, so as to drive the camera and the light source to reset;

[0045] S10: the processor receives the seat back and cushion digital image data, processes and analyzes the image based on a visual detection method, and detects the surface defects of the seat;

[0046] S11: if defects are detected, output a "seat surface has defects" instruction and a defect point image, otherwise, output a "seat surface has no defects" instruction;

[0047] S12: the controller sends a recovery transmission instruction to the transmission mechanism to drive the vehicle to be offline.

[0048] In step S4, after the operator opens the corresponding window, the operator sends a start instruction to the fixed visual acquisition mechanism through the touch display screen button, sends a close instruction to the indicator light and the horn, and returns to S2 to resume the automatic detection work.

[0049] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0050] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A machine vision-based system for detecting surface defects in vehicle seats, characterized in that, The utility model relates to a kind of vehicle seat surface detection device, including rectangular hollow base (1), automobile transmission mechanism (2), photoelectric opposite radiation mechanism (3), four groups of mobile visual acquisition mechanism (4), two groups of fixed visual acquisition mechanism (5) and control detection cabinet (6), the rectangular hollow base (1) is horizontally arranged, and the top of the rectangular hollow base (1) is centrally located and reserved transmission mechanism rectangular through slot, the rectangular hollow base (1) top two sides symmetry and reserve visual acquisition mechanism rectangular groove, the automobile transmission mechanism (2) is fixedly installed in rectangular hollow base (1) inside, and the automobile transmission mechanism (2) top is through transmission mechanism rectangular through slot and with the top upper surface of the rectangular hollow base (1) flush arrangement, the photoelectric opposite radiation mechanism (3) is vertically and fixedly installed on the top of the rectangular hollow base (1), and across the transmission mechanism rectangular through slot and symmetrically arranged, the four groups of mobile visual acquisition mechanism (4) bottom is vertically installed in the visual acquisition mechanism rectangular groove (102) of the top of the rectangular hollow base (1) top, and each rectangular groove installs two groups, the two groups of fixed visual acquisition mechanism (5) are vertically symmetric and fixedly installed on the top of the rectangular hollow base (1), located visual acquisition mechanism rectangular through slot (101) outside, the control detection cabinet (6) is fixedly installed on the top of the rectangular hollow base (1) one side, and the control detection cabinet (6) is respectively electrically connected with the automobile transmission mechanism (2), photoelectric opposite radiation mechanism (3), four groups of mobile visual acquisition mechanism (4), two groups of fixed visual acquisition mechanism (5); Wherein: the mobile visual acquisition mechanism (4) is used to detect whether the seat surface is defective, and the fixed visual acquisition mechanism (5) is used to determine the current four-window opening height.

2. The machine vision-based system for detecting surface defects on seats of a vehicle as claimed in claim 1, wherein, Each group of the mobile visual acquisition mechanism (4) includes a linear slide guide electric module (401), a vertical adjustment electric push rod (402), a moving seat (403), a horizontal adjustment electric push rod (404), an electric angle adjuster (405), a ring light source (406), and a first industrial camera (407). The guide rail of the linear slide guide electric module (401) is fixedly installed in the visual acquisition mechanism rectangular groove (102) on the top of the rectangular hollow base (1). The vertical adjustment electric push rod (402) is vertically fixedly installed on the upper surface of the slide block of the linear slide guide electric module (401). The moving seat (403) is fixedly connected to the telescopic end of the vertical adjustment electric push rod (402). The horizontal adjustment electric push rod (404) is horizontally fixedly installed on the moving seat (403). The electric angle adjuster (405) is fixedly connected to the telescopic end of the horizontal adjustment electric push rod (404). The ring light source (406) is fixedly installed on the outer side wall of the electric angle adjuster (405). The first industrial camera (407) is fixedly installed on the outer side wall of the electric angle adjuster (405) and located in the inner ring center of the ring light source (406).

3. The machine vision-based system for detecting surface defects on seats of a vehicle as claimed in claim 1, wherein, Each of the fixed visual acquisition mechanisms (5) comprises a camera support (501), a second industrial camera (502), the camera support (501) is fixedly installed on the upper surface of the rectangular hollow base (1) and located outside the movable visual acquisition mechanism groove (102), the second industrial camera (502) is fixedly installed on the upper end side of the camera support (501) and the camera lens is horizontally arranged towards the automobile transmission mechanism (2).

4. The machine vision-based system for detecting surface defects on seats of a vehicle as claimed in claim 1, wherein, The control detection cabinet (6) comprises a cabinet body (601), a touch display screen (602), a power switch (603), a controller (604), a visual processor (605), a loudspeaker (606) and a state indicating lamp (607), the cabinet body (601) is vertically fixedly installed on the upper part of the top wall of the rectangular hollow base (1), the touch display screen (602) and the power switch (603) are both fixedly installed on the side of the cabinet body (601) away from the transmission mechanism (2), the loudspeaker (606) is fixedly installed on the outer side of the cabinet body (601), the state indicating lamp (607) is vertically fixedly installed on the top of the cabinet body (601), the controller (604) and the visual processor (605) are fixedly installed in the cabinet body (601), and the controller (604) is respectively electrically connected with the power switch (603), the touch display screen (604), the visual processor (605), the infrared emitter (302), the infrared receiver (303), the linear slide guide electric module (401), the vertical adjustment electric push rod (402), the horizontal adjustment electric push rod (404), the electric angle adjuster (405), the ring light source (406), the first industrial camera (407), the second industrial camera (502), the driving motor (206), the state indicating lamp (607) and the loudspeaker (606), and the visual processor (605) is electrically connected with the first industrial camera (407) and the second industrial camera (502).

Images