A method and system for glass detection

Abstract

The application provides a glass detection method and system, comprising: S101. Setting a signal emitting module and a signal collecting module at a route of a to-be-detected glass, so that the signal emitting module and the signal collecting module are located at opposite sides of the to-be-detected glass; S102. Setting the signal emitting module, so that a projection shape of light emitted by the signal emitting module on the to-be-detected glass is a straight line and is perpendicular to a running direction of the to-be-detected glass; S103. The signal collecting module collects signals sent by the signal emitting module; S104. Comparing a shape of the signals with a projection of the light emitted by the signal emitting module according to a preset condition, if a matching degree of the shape and the projection shape meets a threshold value, the to-be-detected glass meets detection requirements; if the threshold value is not met, the to-be-detected glass does not meet the detection requirements. Compared with the prior art, the application can effectively analyze refraction of signals in the glass, and realize automatic detection of homogeneity of tempered glass.

Description

TECHNICAL FIELD

[0001] The present application relates to a detection method, in particular to a method and a detection system for detecting the performance of tempered glass. BACKGROUND

[0002] Tempered glass is made of conventional glass, which is heated and softened, and then rapidly cooled to form a large stress in the glass, so that it can withstand a large impact force and form tempered glass. However, during the production process of tempered glass, uneven heating or cooling may cause uneven internal structure or surface deformation of the glass, resulting in substandard tempered glass. However, due to the transparent material of the glass itself, automatic detection of the glass is not possible, and manual detection is required. Although the refraction of light can be used to detect the material of the glass, there is no suitable method to achieve the detection of the material of the glass. SUMMARY

[0003] The present application provides a glass detection method and system to at least achieve the detection of the uniformity of tempered glass.

[0004] The present application provides a glass detection method, comprising:

[0005] S101. A signal emitting module and a signal collecting module are arranged at the route of the glass to be detected, so that the signal emitting module and the signal collecting module are located on opposite sides of the glass to be detected;

[0006] S102. The signal emitting module is arranged so that the projection of the light emitted by the signal emitting module on the glass to be detected is a straight line and perpendicular to the running direction of the glass to be detected;

[0007] S103. The signal collecting module collects the signal sent by the signal emitting module;

[0008] S104. According to the preset condition, the shape of the signal is compared with the projection of the light emitted by the signal emitting module. If the matching degree of the shape and the projection shape meets the threshold value, the glass to be detected meets the detection requirement; if it does not meet the threshold value, the glass to be detected does not meet the detection requirement.

[0009] Further, S104. According to the preset condition, the shape of the signal is compared with the projection of the light emitted by the signal emitting module. If the matching degree of the shape and the projection shape meets the threshold value, the glass to be detected meets the detection requirement; if it does not meet the threshold value, the glass to be detected does not meet the detection requirement, comprising:

[0010] The signal collecting module collects the light emitted by the signal emitting module and establishes a projection image;

[0011] The arrangement image of the signal emitting module is matched with the flatness of the projection image edge, if the difference between the arrangement image and the flatness of the projection image edge is less than a threshold value, the to-be-tested glass meets the detection requirement;

[0012] If the difference between the arrangement image and the flatness of the projection image edge is greater than a threshold value, the to-be-tested glass does not meet the detection requirement.

[0013] Further, the arrangement image of the signal emitting module is matched with the flatness of the projection image edge, if the difference between the arrangement image and the flatness of the projection image edge is less than a threshold value, the to-be-tested glass meets the detection requirement, including:

[0014] The projection image edge is collected and fitted to obtain a first fitting line segment;

[0015] The arrangement image is collected and fitted to obtain a second fitting line segment;

[0016] A plurality of points are taken on the first fitting line segment and the second fitting line segment at equal intervals, the first dispersion of the plurality of points on the first fitting line segment and the second dispersion of the plurality of points on the second fitting line segment are calculated, the difference between the first dispersion and the second dispersion is compared, if the difference is less than a threshold value, the to-be-tested glass meets the detection requirement.

[0017] Further, the first dispersion is a first variance value, and the second dispersion is a second variance value.

[0018] Another aspect of the present application also discloses a system applying the above glass detection method, comprising: a conveying device, a detection device, the detection device comprising a plurality of signal transmitters, a plurality of signal collectors and a convex lens, the signal transmitters and the signal collectors are respectively arranged on the upper and lower sides of the conveying device, the signal collectors are densely arranged to form a signal collection area, the conveying device is provided with a gap area, the signals of the signal transmitters are transmitted into the signal collection area through the gap area, and the convex lens is arranged at the emitting end of the signal transmitter.

[0019] Further, the detection device further comprises a light signal diverging device, the light signal diverging device is located at the collecting end of the signal collector, the light signal diverging device comprises a light signal incident surface and a light signal emitting surface, the light signal incident surface faces the signal transmitter, and the light signal emitting surface faces the signal collector.

[0020] Further, the light signal diverging device is a concave lens.

[0021] Further, the concave lens is a strip-shaped concave lens, and the extension direction of the strip-shaped concave lens is perpendicular to the conveying direction of the conveying device; the convex lens is a strip-shaped convex lens, and the extension direction of the strip-shaped convex lens is perpendicular to the conveying direction of the conveying device.

[0022] Further, the light signal transmitter is an ultraviolet emitter, and the signal collector is an ultraviolet sensor.

[0023] Further, the glass detection system comprises a machine body, and the conveying device and the detection device are installed on the machine body; the detection device comprises a shell and a first rotating member, and the light signal diverter and the signal collector are installed on the shell, and the shell is connected to the machine body through the first rotating member.

[0024] Compared with the prior art, the present application can effectively analyze the refraction of the signal in the glass by comparing the shapes of the light projections, and realize the automatic detection of the uniformity of the tempered glass. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the forward structure of the embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the side structure of the embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of the detection device structure of the embodiment of the present application.

[0028] 1, conveying device; 11, conveying roller; 2, detection device; 21, signal transmitter; 22, signal collector; 23, gap region; 24, light signal diverter; 25, shell; 26, first rotating member; 27, first linear motor; 28, second rotating member; 29, second linear motor; 3, machine body. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all.

[0030] The embodiment of the present application discloses a glass detection method, comprising:

[0031] S101. Setting a signal emitting module and a signal collecting module at the route that must be passed through by the glass to be detected, so that the signal emitting module and the signal collecting module are respectively located on the opposite two surfaces of the glass to be detected;

[0032] The to-be-tested glass can be conveyed by the conveying roller set, and the signal emitting module and the signal collecting module are arranged on the upper and lower sides of the to-be-tested glass respectively.

[0033] S102. The signal emitting module is arranged such that the projection shape of the light emitted by the signal emitting module on the to-be-tested glass is a straight line and is perpendicular to the running direction of the to-be-tested glass.

[0034] The signal emitting module is provided with a plurality of signal emitting units arranged in a straight line, and the straight line is perpendicular to the running direction of the to-be-tested glass; the signal collecting module is a whole panel structure, and the signal collecting module is provided with a plurality of signal collecting units arranged in a panel shape.

[0035] S103. The signal collecting module collects the signal sent by the signal emitting module.

[0036] The signal emitting module sends the optical signal, which is collected by the signal collecting module after passing through the to-be-tested glass; it should be noted that the emitting angle of the signal emitting module is inclined and forms an acute angle with the to-be-tested glass, which is 30-60 degrees in the embodiment of the application.

[0037] S104. The shape of the signal is compared with the projection of the light emitted by the signal emitting module according to a preset condition, if the matching degree of the shape and the projection shape meets a threshold value, the to-be-tested glass meets the detection requirement, if the threshold value is not met, the to-be-tested glass does not meet the detection requirement.

[0038] After the light is refracted by the to-be-tested glass, the light is deflected, so that the density and shape uniformity of the glass can be judged by detecting the shape change of the light at the signal collecting module during the running of the to-be-tested glass.

[0039] The embodiment of the application can effectively analyze the refraction of the signal in the glass by comparing the projection shape of the optical fiber, and realize the automatic detection of the uniformity of the tempered glass.

[0040] Optionally, the S104. The shape of the signal is compared with the projection of the light emitted by the signal emitting module according to a preset condition, if the matching degree of the shape and the projection shape meets a threshold value, the to-be-tested glass meets the detection requirement, if the threshold value is not met, the to-be-tested glass does not meet the detection requirement, including:

[0041] The signal collecting module collects the light emitted by the signal emitting module and establishes a projection image.

[0042] The projection of the light on the signal collecting module is collected by the signal collecting module, and a projection image is established.

[0043] The arrangement image of the signal emitting module is matched with the flatness of the projection image edge, if the difference between the arrangement image and the flatness of the projection image edge is less than a threshold value, the to-be-tested glass meets the detection requirement;

[0044] Wherein, the projection image edge is compared with the arrangement image of the signal emitting module, for example, the signal emitting units of the signal emitting module are arranged in a straight line, then the projection image edge collected by the signal receiving module should be flat, but when the to-be-tested glass has density variation or uneven surface, part of the light will have different refraction, resulting in uneven projection image edge, through threshold setting, this situation can be detected and analyzed;

[0045] If the difference between the arrangement image and the flatness of the projection image edge is greater than the threshold value, the to-be-tested glass does not meet the detection requirement.

[0046] In particular, the arrangement image of the signal emitting module is matched with the flatness of the projection image edge, if the difference between the arrangement image and the flatness of the projection image edge is less than a threshold value, the to-be-tested glass meets the detection requirement, comprising:

[0047] The projection image edge is collected and fitted to obtain a first fitting line segment;

[0048] The arrangement image is collected and fitted to obtain a second fitting line segment;

[0049] A plurality of points are taken on the first fitting line segment and the second fitting line segment at equal intervals, the first dispersion of the plurality of points on the first fitting line segment and the second dispersion of the plurality of points on the second fitting line segment are calculated, the difference between the first dispersion and the second dispersion is compared, if the difference is less than a threshold value, the to-be-tested glass meets the detection requirement.

[0050] Wherein, the comparison of the difference between the first dispersion and the second dispersion can effectively judge the flatness of the projection image edge.

[0051] In particular, the first dispersion is a first variance value, and the second dispersion is a second variance value.

[0052] Wherein, based on the comparison of the variance value, the flatness of the first fitting line segment can be effectively judged.

[0053] The application further discloses a system applying the glass detection method, which comprises a conveying device and a detection device.

[0054] The embodiment of the application discloses a glass detection system, as shown in the figure, Figure 1 、 Figure 2 The detection device 2 comprises a plurality of signal transmitters 21 and a plurality of signal collectors 22, the signal transmitters 21 and the signal collectors 22 are arranged on the upper and lower sides of the conveying device 1, the signal collectors 22 are densely arranged to form a signal collection area, and the conveying device 1 is provided with a gap area 23, and the signals of the signal transmitters 21 are transmitted into the signal collection area through the gap area 23.

[0055] The plurality of signal transmitters 21 are arranged in a straight line group, and the straight line group is perpendicular to the conveying direction of the conveying device 1. The signals adopted by the signal transmitters 21 and the signal collectors 22 are signals that will be refracted in the transmission process from air to tempered glass, including light signals and the like. The signal transmitters 21 and the signal collectors 22 adopt signals for transmission, and the refractive deviation angle of the signals on the surface of the glass is used to determine whether the glass material is uniform. If the deviation angle is different, it indicates that the glass material is not uniform, there is a problem of uneven surface or internal density, and then the position of the problem of the glass material is found, and automatic detection is realized.

[0056] The embodiment of the application utilizes the refraction of signals in the glass to realize automatic detection of the uniformity of the tempered glass, so that the artificial pressure is reduced.

[0057] Optionally, the signal transmitter 21 is a light signal transmitter, and the signal collector 22 is a light signal collector.

[0058] The plurality of signal transmitters 21 are arranged in a straight line group, and the straight line group is perpendicular to the conveying direction of the conveying device 1. The signals adopted by the signal transmitters 21 and the signal collectors 22 are signals that will be refracted in the transmission process from air to tempered glass, including light signals and the like. The signal transmitters 21 and the signal collectors 22 adopt signals for transmission, and the refractive deviation angle of the signals on the surface of the glass is used to determine whether the glass material is uniform. If the deviation angle is different, it indicates that the glass material is not uniform, there is a problem of uneven surface or internal density, and then the position of the problem of the glass material is found, and automatic detection is realized.

[0059] Particularly, the detection device 2 further comprises a light signal diverging device 24, which is located between the signal transmitter 21 and the signal collector 22, and comprises a light signal incident surface and a light signal emitting surface, wherein the light signal incident surface is directed to the signal transmitter 21, and the light signal emitting surface is directed to the signal collector 22.

[0060] In the embodiment of the present application, the light signal will be scattered after passing through the light signal diverging device 24.

[0061] In the embodiment of the present application, the light signal diverging device 24 is arranged to further increase the angle difference between the non-parallel light rays by means of light scattering. When the glass surface or material is uneven, part of the light rays emitted by the light signal diverging device 24 will form an angle deviation with other light rays, resulting in non-parallel light between part of the light and other light, and the angle difference will be further enlarged after scattering by the light signal transmitter, thereby facilitating the acquisition of the signal collector 22.

[0062] Particularly, the light signal diverging device 24 is a concave lens.

[0063] Particularly, the concave lens is a strip-shaped concave lens, and the extension direction of the strip-shaped concave lens is perpendicular to the conveying direction of the conveying device 1.

[0064] In the embodiment of the present application, the size and curvature of the concave lens can be selected by those skilled in the art according to the actual situation. When the curvature of the concave lens is large, the deviation angle between the non-parallel light rays can be enlarged, thereby improving the detection effect.

[0065] Particularly, the signal transmitter 21 is an ultraviolet emitter, and the signal collector 22 is an ultraviolet sensor.

[0066] In the embodiment of the present application, the signal transmitter 21 and the signal collector 22 can use visible blue light, violet light, etc. as light signals. Alternatively, ultraviolet light with small interference from glass filtering can be used to improve the detection accuracy by taking advantage of the large refractive index of ultraviolet light on the glass surface.

[0067] Particularly, the glass detection system comprises a machine body 3, the conveying device 1 and the detection device 2 are installed on the machine body 3, the detection device 2 comprises a shell 25 and a first rotating member 26, the light signal diverging device 24 and the signal collector 22 are installed on the shell 25, and the shell 25 is connected to the machine body 3 through the first rotating member 26.

[0068] The transmission device 1 is installed on the machine body 3, the shell 25 is located above the transmission device 1, the machine body 3 is provided with a support, the first rotating part 26 is connected with the machine body 3 through the support; the signal transmitter 21 is installed below the transmission device 1; in use, the angle between the shell 25 and the support can be adjusted through the first rotating part 26, so that the shell 25 drives the signal collector 22 to be at a suitable receiving angle.

[0069] The detection device 2 and the transmission device 1 are integrated in the embodiment of the application, so that the structure is simple and the use is convenient.

[0070] In particular, the detection device 2 further comprises at least one first linear motor 27, and the light signal diverter 24 and / or the signal collector 22 are connected with the shell 25 through the first linear motor 27.

[0071] The signal collector 22 is fixedly installed in the shell 25, the first linear motor 27 is connected with the light signal diverter 24, and the first linear motor 27 is used to control and adjust the distance between the light signal diverter 24 and the signal collector 22, so as to adjust the signal collector 22 to receive a suitable light amplification signal.

[0072] The light signal diverter 24 and the light signal collector 22 are arranged in an adjustable structure in the embodiment of the application, the optimal distance between the light signal diverter 24 and the signal collector 22 can be adjusted according to the light condition, accurate detection results can be obtained, and the application is more flexible to use.

[0073] Optionally, the detection device 2 further comprises a second rotating part 28 and a second linear motor 29, the second rotating part 28 is installed on the machine body 3 through the second linear motor 29, and the signal transmitter 21 is connected with the second linear motor 29 through the second rotating part 28.

[0074] The lower surface of the machine body 3 is provided with a signal transmitter support, the second linear motor 29 is installed on the signal transmitter support, the signal transmitter 21 is controlled to move up and down through the second linear motor 29, and the longitudinal position of the signal transmitter 21 is adjusted; the signal transmitter 21 is adjusted to a suitable angle through adjustment of the second rotating part 28.

[0075] The second linear motor 29 and the second rotating part 28 are arranged in the embodiment of the application, so that the signal transmitter 21 can be adjusted according to the use site condition, and the application is more convenient and flexible to use.

[0076] Optionally, the conveying device 1 comprises several conveying rollers 11, and a gap region 23 is arranged between at least two adjacent conveying rollers 11.

[0077] As shown in the figure, the conveying rollers 11 are used for conveying the glass plate to be detected, and the gap region 23 is left between the conveying rollers 11. The light wave sent by the light transmitter is irradiated onto the glass plate to be detected through the gap region 23, and the light wave is refracted to the light signal diverter 24 and the signal collector 22 after passing through the glass plate. Figure 1

[0078] The structure of the embodiment of the present application can be applied to the glass production line, and has the advantages of simple structure, low cost, and convenient and high-precision detection without great modification of the production line.

[0079] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not to limit the same. Although the present application has been described in detail with reference to the above examples, it should be understood by those skilled in the art that the technical personnel can modify or replace the specific embodiments of the present application after reading the present application. However, these modifications or changes do not deviate from the scope of the present application.​

Claims

1. A method of glass inspection, characterized by, The glass detection method comprises: S101. Setting a signal emitting module and a signal collecting module at a route of the glass to be detected, so that the signal emitting module and the signal collecting module are located at opposite sides of the glass to be detected; S102. Setting the signal emitting module so that the projection shape of the light emitted by the signal emitting module on the glass to be detected is a straight line, and the straight line is perpendicular to the running direction of the glass to be detected; the signal emitting module is provided with a plurality of signal emitting units and arranged in a straight line, and the straight line is perpendicular to the running direction of the glass to be detected; the signal collecting module is a whole panel structure, and the signal collecting module is provided with a plurality of signal collecting units and arranged in a panel shape; S103. The signal collecting module collects the signal sent by the signal emitting module, wherein the signal emitting module sends an optical signal, and the optical signal is collected by the signal collecting module after passing through the glass to be detected; the emitting angle of the signal emitting module is inclined, and forms an acute angle with the glass to be detected, and the acute angle is an angle of 30-60 degrees; S104. Comparing the projection shape of the signal collected by the signal collecting module with the projection of the light emitted by the signal emitting module according to a preset condition; if the matching degree of the projection shape of the signal collected by the signal collecting module with the projection shape of the light emitted by the signal emitting module meets a threshold value, the glass to be detected meets the detection requirement; if the matching degree does not meet the threshold value, the glass to be detected does not meet the detection requirement; The S104. Comparing the projection shape of the signal collected by the signal collecting module with the projection of the light emitted by the signal emitting module according to a preset condition; if the matching degree of the projection shape of the signal collected by the signal collecting module with the projection shape of the light emitted by the signal emitting module meets a threshold value, the glass to be detected meets the detection requirement; if the matching degree does not meet the threshold value, the glass to be detected does not meet the detection requirement comprises: The signal collecting module collects the signal of the light emitted by the signal emitting module after passing through the glass to be detected, and establishes a projection image; Matching the flatness degree of the projection image edge with the arrangement image of the light emitted by the signal emitting module; if the difference between the flatness degrees of the arrangement image and the projection image edge is less than a threshold value, the glass to be detected meets the detection requirement; If the difference between the flatness degrees of the arrangement image and the projection image edge is greater than the threshold value, the glass to be detected does not meet the detection requirement; The matching of the flatness degree of the projection image edge with the arrangement image of the light emitted by the signal emitting module comprises: Collecting the projection image edge and fitting to obtain a first fitting line segment; Collecting the arrangement image and fitting to obtain a second fitting line segment; Equidistantly taking a plurality of points on the first fitting line segment and the second fitting line segment, calculating a first dispersion of the plurality of points on the first fitting line segment and a second dispersion of the plurality of points on the second fitting line segment, comparing the difference between the first dispersion and the second dispersion, and if the difference is less than a threshold value, the glass to be detected meets the detection requirement.

2. The method of claim 1, wherein the glass is a glass-ceramic. The first dispersion is a first variance value, and the second dispersion is a second variance value.

3. A system for applying the method for detecting glass according to any one of claims 1-2, characterized in that, The system comprises a conveying device and a detection device, the detection device comprises a plurality of signal transmitters and a plurality of signal collectors, the signal transmitters and the signal collectors are respectively arranged on the upper and lower sides of the conveying device, the signal collectors are densely arranged to form a signal collection area, the conveying device is provided with a gap area, the signals of the signal transmitters are transmitted into the signal collection area through the gap area, and a convex lens is arranged at the emitting end of the signal transmitter.

4. The system of claim 3, wherein, The detection device further comprises a light signal diverging device, the light signal diverging device is located at the collecting end of the signal collector, and the light signal diverging device comprises a light signal incident surface and a light signal emitting surface, the light signal incident surface faces the signal transmitter, and the light signal emitting surface faces the signal collector.

5. The system of claim 4, wherein, The light signal diverging device is a concave lens.

6. The system of claim 5, wherein, The concave lens is a strip-shaped concave lens, the extension direction of the strip-shaped concave lens is perpendicular to the conveying direction of the conveying device, the convex lens is a strip-shaped convex lens, and the extension direction of the strip-shaped convex lens is perpendicular to the conveying direction of the conveying device.

7. The system of claim 3, wherein, The signal transmitter is an ultraviolet emitter, and the signal collector is an ultraviolet sensor.

8. The system of claim 4, wherein, The system comprises a machine body, the conveying device and the detection device are installed on the machine body, the detection device comprises a shell and a first rotating member, the light signal diverging device and the signal collector are installed on the shell, and the shell is connected with the machine body through the first rotating member.

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