• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    DETECTION SYSTEM BASED ON STRUCTURED LINE LASER GLASS MODULATION. A detection system based on structured line laser glass image modulation comprises the processing section (2), the control system and the roller driving mechanisms (5). The detection mechanism (6) provided at the entrance to the processing section (201) comprises the coating and the chamber (602) with laser (601) that emits a beam on the surface of the glass in the gap between the sliding rollers. The camera's focal plane (602) corresponds to the beam's radiation surface, and the camera's signal-emitting terminal (602) is connected to the control system in such a way that when the glass passes in the detection area, the laser radiates the glass surface and the structured line laser are modulated based on the glass to form the laser modulated image with light and shadow distribution, direction of the stepped movement, or distorted laser lines. The camera (602) will transmit the information and the captured glass parameters to the control system. In the system, the detection mechanism (6), with integral design and compact structure, can be easily mounted at the entrance to the (...).
    公开号:BR112015005309B1
    申请号:R112015005309-2
    申请日:2013-08-23
    公开日:2021-01-05
    发明作者:Yanbing Li；Bin Liu
    申请人:Luoyang Landglass Technology Co., Ltd.；
    IPC主号:
    专利说明:

    Technical Field
    [0001] The present invention relates to a system for detecting geometric glass parameters, particularly a detection system based on the image modulation of laser structured in glass line. Prior Art
    [0002] The light source combined with the camera is gradually developing in the glass industry at the moment to measure the comprehensive geometric parameters of glass for purposes of monitoring the production process, such as the disclosed patent on the method and equipment for monitoring production safety glass and the controlled transformation process, in which the high intensity light source is used to irradiate the glass surface to be detected, and the relevant data are analyzed based on the signals of intensity of the reflected light received by the camera . The method is characterized by three disadvantages: the first is that the light received by the camera is the specular reflection light, which means that what the camera finally gets is the light intensity signal, based on which the data of analysis deviate significantly from the actual glass parameters; the second is that the equipment is susceptible to external natural light and background colors when it is used, resulting in inaccurate measurement data; the third is that the equipment or method has special requirements on the angle of incidence of light or the angle of the detection surface when it is adopted, and the data obtained from measurements have large errors when the angles are deviated. Content Invention
    [0003] The technical problem to be solved by the invention is to provide a detection system based on the image modulation of laser structured in a glass line that has no special requirements in the angle of incidence of light or the angle of the detection surface and obtains highly accurate information and parameters through measurement in order to overcome the deficiencies existing in the prior art.
    [0004] The technical solution adopted by the invention is a detection system based on laser image modulation structured in a glass line, comprising the processing section for glass processing, the loading table and the unloading table provided on both sides of the processing section, the control system to control the operating process of the processing section, the roller driving mechanisms provided on the loading table and the discharge table, respectively, which are provided with the plurality of rollers sliding, the rotation of which will trigger the glass to be detected to move on the loading table and the discharge table, and a detection mechanism provided on the entrance of the processing section through support bracket.
    [0005] The detection mechanism comprises a coating, a laser camera, which is involved in the coating, and a camera control device to start the camera at a fixed time whose signal emission terminal is connected to the camera and which it is used to start the camera at a fixed time to scan the area to be detected to generate an image; the beam emitted by the laser, with a laser wavelength of 650 nanometers, is used to radiate the glass surface in the gap between the sliding rollers; the focal plane of the camera corresponds to the beam beam surface for the laser and the signal emission terminal of the camera is connected to the control system in such a way that when the glass passes in the detection area, the laser structured in line radiates the surface of the glass and is modulated based on variations of internal and external profiles, edges, paint patterns, thickness and surface flexion of glass to form the laser modulation image with light and shadow distribution, the direction of the stepped movement, or the distorted laser lines; the camera captures the laser modulation image and transmits the information and parameters of the external profile, internal structural profile, surface wave shape, flexion, thickness and paint distribution of the glass to the control system.
    [0006] The coating of the detection mechanism is provided with a layer of thermal insulation on the inner wall and also provided with a fan for heat transfer.
    [0007] The detection mechanism is attached to the entrance of the processing section through the support bracket.
    [0008] The camera control device provided in the roller driving mechanism is a rotation angle counting transducer that starts the camera at a fixed time according to the speed of movement of the glass on the upper face of the sliding roller.
    [0009] The support bracket is a gantry provided on the loading table through the slide rail which is in a plane parallel to the driving plane of the roller driving mechanism, the gantry moves along the direction of the slide rail, and before the glass enters the processing section, the gantry starts the detection mechanism to scan and collect information about the external profile, the internal structural profile, the shape of the surface wave, bending, thickness, paint distribution, etc. ., the glass during the receiving command from the control system to move along the direction of the slide rail.
    [0010] The camera control device is a speed transducer that starts the camera at a fixed time according to the speed of movement of the gantry, and the control system controls the glass on the loading table to stop movement during the gantry movement.
    [0011] The camera control device is a speed transducer that starts the camera at a fixed time according to the speed of movement of the gantry in relation to the speed of movement of the glass in the roller, and the gantry moves in the same direction or in the opposite direction to the glass to be detected on the loading table.
    [0012] The camera in the detection mechanism is a high speed area matrix CMOS camera.
    [0013] The laser light emitted by the laser is light structured in a single line, or light structured in several lines, or light structured in a network.
    [0014] A detection mechanism is also provided on the discharge table to detect information on the surface of the tempered glass and transmit the collected information to the control system.
    [0015] With the previous technical schemes, the invention has the following beneficial effects:
    [0016] Firstly, the detection mechanism in the system, with the integral design and compact structure, can be easily mounted at the entrance of the processing section, has great adaptability for the installation of other processing means, has no requirements special in the angle of incidence of light or in the angle of the detection surface during detection, and obtains high precision data through measurement, in addition, the backlight has no impact on the measurement accuracy.
    [0017] Second, when the system is adopted to obtain information about the load through measurement, the beam emitted by the laser radiates the surface of the glass in the gap between the sliding rollers in the roller driving mechanism, the focal plane of the the chamber is at the height of the surfaces of the sliding rollers in the roller driving mechanism, and the signal emitting terminal of the chamber is connected to the control system in such a way that when the glass passes the detection area, the linear laser radiates the The glass surface and the laser structured in line is modulated based on the internal and external profiles, edges, patterns of ink printed on the glass surface, difference in the vertical distances of the reference panel with the glass product and the surface flexion of the glass to form the laser modulation image with light and shadow distribution, the direction of the stepped movement, or distorted laser lines; the camera receives the image with the morphological change of the glass surface and thus obtains the information and parameters of the external profile, internal structural profile, the shape of the surface wave, flexion, thickness, paint distribution, etc., glass, through which the accuracy is significantly improved compared to the prior art measurement methods that rely on the intensity of the light signal to analyze the information about the load.
    [0018] Third, with the laser structured in line with a wavelength of 650 nanometers, the beam emitted by the laser and the camera are also positioned on the same side of the object to be detected, in such a way that the impact of a light background can be totally neglected for the detection mechanism to achieve the best measurement results and also to improve the measurement accuracy.
    [0019] Fourth, the camera control device, with its signal emission terminal connected to the camera, is also provided to start the camera at a fixed time; the camera control device starts the camera at a fixed time according to the operating speed of the roller driving mechanism or starts the camera to scan the area to be detected to generate an image based on the time set to allow that the speed for glass conduction or the speed of movement of the gantry coincides with the frequency of collection of the camera; the camera will collect the information every time the glass and / or the camera moves a distance equivalent to that of a detection area in relation to each other to ensure that no area is lost and more accurate detection is achieved.
    [0020] Fifthly, the gantry with detection mechanism is provided on the support of the roller driving mechanism through the slide rail, which means that the gantry moves in a plane parallel to the driving plane of the driving mechanism roller driving, in such a way that the gantry moves over the slide rail, while the detection mechanism located on the gantry initiates the detection if the glass is in the driving plane. Such a configuration has great adaptation for the installation of other processing means. Brief Description of Drawings
    [0021] Figure 1 is the main view of the first embodiment of the invention;
    [0022] Figure 2 is the top view of the first embodiment of the invention;
    [0023] Figure 3 is the structural schematic diagram of the second embodiment of the invention;
    [0024] Figure 4 is the structural schematic diagram of the third embodiment of the invention;
    [0025] Figure 5 is the structural schematic diagram of the fourth embodiment of the invention.
    [0026] The reference signs of the attached drawing are presented as follows: 1 refers to the product to be detected, 2 refers to the processing section, 201 refers to the entry of the processing section, 3 refers to the loading table, 4 refers to the unloading table, 5 refers to the roller driving mechanism, 6 refers to the detection mechanism, 601 refers to the laser, 602 refers to the camera, 7 refers to the support bracket and 8 refers to the rotation angle counting transducer. Detailed Description
    [0027] As shown in Figure 1 and Figure 2, the detection system based on the image modulation of laser structured in glass line comprises processing section 2 for glass processing, loading table 3 and table unloaders 4 provided on both sides of the processing section 2, the control system to control the operating process of the processing section, the roller driving mechanisms 5 provided on the loading table 3 and the unloading table 4, respectively , which are provided with a plurality of sliding rollers, the rotation of which will lead the glass to be detected to move on the loading table 3 and the discharge table 4, and detection mechanism 6 provided on the entrance of the section process 201 through support bracket 7.
    [0028] The detection mechanism 6 comprises the coating, a 602 camera with 601 laser that is involved in the coating, and a camera control device to start the camera at a fixed time, whose signal emission terminal is connected with the camera 602 and which is used to start the camera at a fixed time to scan the area to be detected to generate the image; the laser 601 in which the red laser light with a wavelength of 650 nanometers is adopted, preferably emits a beam on the glass surface in the gap between the sliding rollers, the focal plane of the camera 602 corresponds to the beam's radiation surface for the laser, and the signal emission terminal of camera 602 is connected to the control system in such a way that there is no information available in the image when no glass passes; when the glass passes the detection area, the linear laser irradiates the glass surface and the laser structured in line is modulated based on internal and external profiles, edges, patterns of ink printed on the glass surface, difference in vertical distances from the reference panel with glass product and superficial flexing of the glass to form the image of laser modulation with distribution of light and shadow, direction of the stepped movement, or distorted laser lines; the camera receives the image with the morphological change of the glass surface, thus obtaining the information and parameters of the external profile, internal structural profile, shape of the superficial wave, bending, thickness, paint distribution, etc., of the glass, and transmits said parameters to the control system; With the information and parameters obtained above, the control system identifies the glass models through the adoption of the diffuse multiple parameter matching method and is thus used for the intelligent control of parameters for the production of glass and processing equipment; the angle should be included between the optical axis and the camera's imaging axis to ensure that the location exposed to the beam is within the camera's imaging scope, and dark field imaging is adopted in the imaging device such that the background will basically not be formed on the camera, so the backlight will have no impact on measurement accuracy.
    [0029] As shown in Figure 3 and Figure 4, the detection mechanism 6 is provided over the entrance of the processing section 201 through the support support 7, for which two preferred embodiments are available. The first modality is that the support bracket is fixed at the entrance of the processing section, where the camera control device can be selected to be the rotation angle counting transducer 8 provided in the roller driving mechanism that initiates the chamber at a fixed time according to the calculated linear speed of the slide roller and is provided for the purpose of controlling the speed for the conduction of glass to match the frequency of collection of the chamber; the camera will collect information every time when the glass moves a distance equivalent to that of a detection area to ensure that no detection area is lost and greater accuracy is achieved. The second modality is that the support support is mobile, in which its structure can be varied adaptively, and the structure of the gantry can be selected and supplied on the loading table 3 by means of a slide rail that is on a plane parallel to the driving plane of the roller driving mechanism 5; the gantry moves along the direction of the slide rail, which means that the gantry moves in a plane parallel to the driving plane of the roller driving mechanism 4; the configuration has two detection modes. The first way is that the glass to be detected is kept still, and the gantry with detection mechanism moves, in which the camera control device can be selected to be the speed transducer, which starts the 602 chamber in a while fixed according to the speed of movement of the gantry to ensure that no area is wasted. The second way is that the glass and the detection mechanism have two circulation modes, that is, they move in the same direction or in the opposite direction. In such a way, the gantry with detection mechanism and the glass to be detected have the relative movement speed. In this case, the camera control device can also be selected to be the speed transducer, which starts the camera 302 at a fixed time according to the speed of movement of the gantry in relation to the speed of movement of the glass on the roller and also it is provided for the purpose of controlling the camera to collect information each time the glass travels a distance equivalent to that of a detection area to ensure that no area is wasted.
    [0030] A detection mechanism 6, which adopts the same detection theory with the loading table that can also be provided on the discharge table 4 on the other side of the processing section 2 to improve the closed loop control performance of the device. It can also be provided on a secure or mobile support stand to detect information on the surface of the tempered glass and also transmit the information to the control system. Thus, the quality of processing and the rate of finished products can be analyzed for the products through comparison by the control system, and the general production information can also be obtained with the products of the same batch to realize the automatic production capacity of the product. device. As shown in Figure 4 and Figure 5, the detection mechanism on the loading table is attached, while on the discharge table it is movable in Figure 4. The detection mechanisms on the loading and unloading tables can move to collect information in Figure 5.
    [0031] The coating of the detection mechanism is provided with a layer of thermal insulation on the inner wall and is also provided with the fan for heat transfer.
    [0032] The detection engine camera is a high-speed area matrix CMOS camera.
    [0033] The laser light emitted by the laser is light structured in a single line, or light structured in several lines, or light structured in a network.
    [0034] In the invention, the detection mechanism, with its integral design and compact structure, can be easily adjusted through the input of the processing section. The device is enclosed with an alloy compartment, provided with a thermal insulation layer on the inner wall and provided with a fan for heat transfer to guarantee the operating temperature of the laser and the CMOS chamber in the device.
    [0035] During the operation of the system, the roller driving mechanism transports the glass product to be detected to the processing section through the entrance of the processing section. While the skid rollers rotate, the detection mechanism is started, the laser beam is emitted by the laser structured in line on the face of the glass in the gap between the skid rollers at a certain angle, and the CMOS camera starts monitoring the image for the aperture area when the focal plane of your lens is at the height of the top surface of the slide roller. When there is no glass passing, the image formation plane of the laser beam is not within the image formation area of the CMOS camera, so the image obtained by the CMOS camera does not contain any information. When the glass passes the detection area, the laser beam is modulated based on the glass to form an image with information that contains disconnection, distribution of light and shadow, distortion and differences in the location of the function points with the reference plane in the direction of movement due to shape, size, distribution of printed ink patterns, surface waveform, flexion and thickness of the glass. The angle of rotation of the slide roller is collected and counted by an angle counting transducer and then drives the CMOS camera to allow the CMOS camera to fully form the image on the glass (ie no area is lost) . During the feeding of the glass product, the information collected in the image is processed, the profile and comprehensive geometric parameters are obtained and its model is identified with the distorted identification method of multiple parameters by the device. The layout, the comprehensive geometric parameters and the glass profile are displayed graphically on the industrial computer for the test. The glass model and comprehensive size parameters are also transmitted to the control system via the universal serial interface. The control system then sets the parameters for processing automatically based on the comprehensive geometric parameters obtained from the glass.
    [0036] The detection engine camera is the high speed area matrix CMOS camera. The matrix elements of the chamber are relevant to the accuracy of the detection of geometric parameters based on the width of the system's sliding roller. The length ratios for the chip width are close to each other in the case of conventional area matrix imaging apparatus in the prior art. The numbers of matrix elements in the length and width directions have little difference. The detection area based on the invention is long and narrow; thus, while ensuring the direction of the width of the sliding roller, it results in a large coverage area of the glass product in the direction of movement, therefore, the CMOS chamber is selected in the invention to obtain the data for the specified number of lines taking advantage of its bit-reading feature. In this way, the glass coverage area in the direction of movement is reduced, while the data volume is also reduced. This is favorable for subsequent image processing. It is exemplified by the fact that when the system coverage area is narrow and long, with the size of 3,000 mm * 40mm, and the 4K * 3K high-speed CMOS camera is selected, then we can activate the camera chip to change its operating position to 4K * 40 when reading the specified number of lines and thus the long and narrow detection area can be formed effectively.
    [0037] The light source in the detection mechanism is laser structured in line, or light structured in single line or light structured in multiple lines. The number of laser beams determines the accuracy of product size detection in the direction of movement at a given collection frame rate.
    [0038] The total length of the system's driving roller is fixed, which means that the actual effective length of product to be positioned can be determined by the length of the driving roller. The rotation angle counting transducer for the system sliding roller has two main tasks, determining how long the product is transported every time the camera forms its image, that is, the external camera signal generation function CMOS, and determine if the material enters the section completely, that is, start and end the signal generation function of the detection device.
    [0039] Upon receiving trigger signal from the rotation angle counting transducer, the detection device based on the invention is started to collect and expose a frame image of the monitored area and save it in the specified memory location; Upon receiving the termination signal from the rotation angle counting transducer, the detection device interrupts the detection path and begins processing image data. It is exemplified by the fact that when the single image of the detection area frame is 3000 * 60 and the collection is conducted 200 times, with the data bit depth of eight bits, then the total data volume is 274Mbit.
    [0040] Image processing based on the invention comprises the collection and scanning of feather points, identification of the number of glass sheets, a graphic indication of the external glass profile, glass thickness, glass size, waveform glass, bending, etc., and the mathematical characterization of the above parameters. The process can be used not only to establish product data, but also to judge the type of product by comparing it with the data in the product database.
    权利要求:
    Claims (10)
    [0001]
    1. Detection system based on glass laser image modulation, comprising loading table (3) and unloading table (4), roller driving mechanisms (5) provided on the loading table (3) and on the discharge table (4), respectively, which are provided with a plurality of sliding rollers, the rotation of which can trigger the glass to be detected to move on the loading table (3) and the discharge table (4) , and a detection mechanism (6), wherein the detection mechanism (6) comprises a coating, a camera (602) with laser (601) that is involved in the coating, and a camera control device for starting the camera (602) at a fixed time, whose signal emission terminal is connected to the camera (602) and which can be used to start the camera (602) at a fixed time to scan the area to be detected to generate an image, in whereas a beam emitted by a laser (601) can radiate the glass surface in the gap between the sliding rollers; and in which focal plane of the chamber (602) corresponds to the beam beam surface for the laser characterized by the fact that the laser (601) is structured in line and the laser (601) has a wavelength of 650 nanometers, and wherein the detection system still comprises a processing section (2) for processing glass, where the loading table (3) and the discharge table (4) are provided on both sides of the processing section (2), wherein the detection system still comprises a control system for controlling processes of operation of the processing section (2), in which the detection mechanism (6) is provided over the entrance of the processing section (201) through support of support (7), and where the signal emission terminal of the camera (602) is connected with the control system in such a way that when glass passes through the detection mechanism (6), the laser structured in line radiates the surface of glass and can be modulated based on variations in internal and external profiles cores, edges, ink patterns, thickness and superficial flexion of glass to form the laser modulated image with distribution of light and shadow, direction of the stepped movement, or distorted laser lines; the camera (602) can capture the laser modulation image and transmit the information and parameters of the external profile, internal structural profile, surface wave shape, flexion, thickness and paint distribution from the glass to the system of control.
    [0002]
    2. Detection system based on glass laser image modulation, according to claim 1, characterized by the fact that the coating of the detection mechanism (6) is provided with a thermal insulation layer on the inner wall and also provided fan for heat transfer.
    [0003]
    3. Detection system based on glass laser image modulation, according to claim 1, characterized by the fact that the detection mechanism (6) is attached to the entrance of the processing section (201) through the support support (7).
    [0004]
    4. Detection system based on glass laser image modulation, according to claim 3, characterized by the fact that the camera control device provided in the roller driving mechanism (5) is a counting transducer rotation angle (8) that initiates the chamber (302) at a fixed time according to the speed of glass movement on the upper face of the sliding roller.
    [0005]
    5. Detection system based on glass laser image modulation, according to claim 1, characterized by the fact that the support bracket (7) is a gantry provided on the loading table (3) by means of slide rail that is in the plane parallel to the driving plane of the roller driving mechanism (5), the gantry is movable along the direction of the slide rail, and before glass enters the processing section (2), the gantry can start the detection mechanism (6) to perform the scan and collect information on the external profile, internal structural profile, surface waveform, flexion, thickness, paint distribution, etc., of the glass during the control system's command reception to move along the direction of the slide rail.
    [0006]
    6. Detection system based on glass laser image modulation, according to claim 5, characterized by the fact that the camera control device is a speed transducer that starts the camera (602) at a fixed time according to the speed of movement of the gantry, and the control system can control the glass on the loading table (3) to stop moving during the movement of the gantry.
    [0007]
    7. Detection system based on glass laser image modulation, according to claim 5, characterized by the fact that the camera control device is a speed transducer that starts the camera (302) at a fixed time according to the speed of movement of the gantry in relation to the speed of movement of the glass on the roller, and the gantry is movable in the same direction or in the opposite direction to the glass to be detected on the loading table (3).
    [0008]
    8. Detection system based on glass laser image modulation, according to claim 3 or 5, characterized by the fact that the camera (602) in the detection mechanism (6) is the CMOS matrix camera of high speed area.
    [0009]
    9. Detection system based on glass laser image modulation, according to claim 8, characterized by the fact that the laser light emitted by the laser (601) is light structured in a single line, or light structured in lines multiple, or network-structured light.
    [0010]
    10. Detection system based on glass laser image modulation, according to claim 1, characterized by the fact that a detection mechanism (6) is also provided on the discharge table (4) to detect information about the surface of the tempered glass and transmit the collected information to the control system.
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    法律状态:
    2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-11-17| B09A| Decision: intention to grant|
    2021-01-05| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/08/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201210340126.4|2012-09-14|
    CN201210340126.4A|CN102818538B|2012-09-14|2012-09-14|Detection system based on modulated glass thread structure laser image|
    PCT/CN2013/082168|WO2014040486A1|2012-09-14|2013-08-23|Detection system based on modulation of line structured laser image of glass|
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