WO2017133178A1 - 基于自动光学检测程序的触摸面板自动检测设备 - Google Patents

基于自动光学检测程序的触摸面板自动检测设备 Download PDF

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Publication number
WO2017133178A1
WO2017133178A1 PCT/CN2016/087928 CN2016087928W WO2017133178A1 WO 2017133178 A1 WO2017133178 A1 WO 2017133178A1 CN 2016087928 W CN2016087928 W CN 2016087928W WO 2017133178 A1 WO2017133178 A1 WO 2017133178A1
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Prior art keywords
side wall
touch panel
test platform
opening
light source
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PCT/CN2016/087928
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English (en)
French (fr)
Inventor
谢彦腾
饶杰
黄艳萍
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意力(广州)电子科技有限公司
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Publication of WO2017133178A1 publication Critical patent/WO2017133178A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

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  • the invention relates to the technical field of detecting touch screen products, in particular to a touch panel automatic detecting device based on an automatic optical detecting program.
  • the quality inspection of the touch screen mainly includes two aspects, one is to detect whether the surface of the touch screen has scratches, dust, whether the inner surface is printed well or the like, and the other is to detect whether the touch screen is mixed in the mass production process (ie, in one Kinds of touch screen products mixed with other types of touch screen products), function key graphics or reserved holes (such as home button, return button, camera reserved hole, etc.) position printing offset.
  • the appearance of the touch screen when detecting the appearance of the touch screen, it is generally compared by detecting the visual of the person, that is, the artificial comparison of the standard product and the product to be tested by the visual and intra-brain impression to judge the appearance problem.
  • this method There are several problems with this method: first, the efficiency of manual detection is low, the error rate is high, and the missed detection rate is high. Second, the stability of the test results is poor, and the manual test is subjectively influenced by the tester. The experience and health status of the tester will affect the test results. Third, the detection accuracy is poor, and it is very difficult for the human to rely on the visual judgment to determine whether the position of the graphic on the touch screen is qualified. Because the distance of the distance, the offset of the angle will cause the visual effect to change, affecting the manual determination of the size and distance of the function key graphic by visual inspection.
  • the technical problem to be solved by the present invention is to provide a touch panel automatic detecting device capable of replacing the appearance of a touch screen manually, which can accurately and efficiently detect whether the appearance of the touch screen product is qualified, whether there is a problem such as mixing, thereby improving the efficiency of the touch screen detection. And stability.
  • the present invention provides an automatic detection device for a touch panel based on an automatic optical detection program, comprising: a device housing having a first opening in a middle portion thereof, a housing disposed inside the housing of the device, and being fixed in the a display on the outer surface of the device housing, and a control processing mechanism; wherein the first opening of the device housing is internally provided with a test platform for placing a product to be tested, the case being composed of a top wall, a plurality of side walls, and the The test platform is formed by enclosing the camera, the top wall of the box is fixed with a camera, the side wall of the box is provided with a light source, and the control processing mechanism is electrically connected to the display and the camera respectively.
  • the box body is a rectangular box body formed by a front side wall, a rear side wall, a left side wall, a right side wall, the top wall and the test platform, and the front side wall a distance between the lower edge and the test platform, such that a second opening is formed between the front sidewall and the test platform, and the second opening is disposed inside the first opening, and the first An opening is commonly used to accommodate the product to be tested.
  • the light sources are four, which are respectively disposed on the front side wall, the rear side wall, the left side wall and the right side wall.
  • the power of the light source is 15-30 W, and the value range of the power includes any specific point value, for example, the power of the light source is 15 W, 20 W, 25 W or 30 W.
  • the light source is a strip light source, parallel to the test platform along its length direction, and the center line of the light source emitting light is also parallel to the test platform.
  • the light emitted by the light source is white light.
  • the light sources on the front side wall and the rear side wall are symmetrically disposed, which are the first group of light sources, the left side wall and the right side wall
  • the light source is symmetrically disposed, and is a second group of light sources.
  • the height of the first group of light sources from the test platform is greater than the height of the second group of light sources from the test platform.
  • the height of the box is H
  • the height of the first group of light sources is 0.5H from the test platform
  • the height of the second group of light sources from the test platform is 0.25H.
  • top surface of the box body and the inner surface of the side wall of the box body are affixed with a diffuse reflection material.
  • the diffuse reflective material is a sponge glue.
  • the rear side wall is a split door structure, and includes a first rear side wall connected to the left side wall and a second rear side wall connected to the right side wall.
  • control processing mechanism is provided with an automatic optical detection program for analyzing and processing the image result of the product to be tested captured by the camera, and feeding back the image result to the display.
  • AOI Automatic Optical Inspection
  • test platform is a blister positioning fixture for fixing the product to be tested.
  • a lower portion of the front side panel is provided with a third opening, and a pedal is disposed in the third opening, and the foot pedal is electrically connected to the control processing mechanism for controlling the automatic Detect the device to turn on the detection work or stop the detection work.
  • a working indicator light is provided on the device casing for indicating the working state of the automatic inspection device.
  • the device housing is a rectangular outer casing formed by a front side panel, a rear side panel, a left side panel, a right side panel, a top panel and a bottom panel, and the first opening is opened on the front side panel.
  • the display is disposed on an outer surface of the front side panel.
  • a support portion and/or a sliding portion are disposed under the bottom plate of the device housing.
  • the touch panel automatic detecting device of the present invention can replace the manual appearance of the touch panel. Since the entire detecting process is completed by the combination of the device hardware and the software, the testing efficiency is high, the reliability is high, the precision is high, and the stability is good.
  • the image quality of the image is very critical, which directly affects whether the automatic optical detecting program can accurately analyze it.
  • the present invention conducts a large number of tests on a series of parameters such as the number, position, power, color and the like of the light source in the box, and at the same time explores the materials suitable for the interior of the box, and finally successfully forms a diffuse light source in the box body.
  • the environment makes the image quality of the product to be tested taken by the camera higher, and the shadow pattern other than the product does not appear on the image, thereby ensuring that the image of the product to be tested can be applied to the automatic optical inspection program.
  • FIG. 1 is a schematic structural diagram of a touch panel automatic detecting device based on an automatic optical detecting program according to Embodiment 2.
  • FIG. 2 is a schematic structural view of a touch panel automatic detecting device based on an automatic optical detecting program according to Embodiment 2 (the housing is omitted in the drawing).
  • FIG. 3 is a schematic structural view of a box body of a touch panel automatic detecting device based on an automatic optical detecting program according to Embodiment 2.
  • FIG. 4 is a schematic structural view of the box body of FIG. 3 omitting the front side wall, the right side wall, and the corresponding light source.
  • Figure 5 is a partial cross-sectional view of Figure 1.
  • the above partial terms may be used to indicate other meanings in addition to the orientation or positional relationship, for example, the term “upper” may also be used to indicate a certain dependency or connection relationship in some cases.
  • the specific meaning of these terms in the present invention can be understood on a case-by-case basis.
  • installation should be understood broadly.
  • it may be a fixed connection, a detachable connection, or a one-piece construction; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or it may be two devices, components or components. Internal communication.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • first means two or more.
  • the embodiment provides a touch panel automatic detecting device based on an automatic optical detecting program, including a device housing having a first opening in a middle portion thereof, a box body disposed inside the device housing, and being fixed on an outer surface of the device housing And a control processing mechanism; wherein the first opening of the device housing is internally provided with a test platform for placing a product to be tested, the box being formed by a top wall, a plurality of side walls and the test platform
  • the top wall of the box body is fixed with a camera, the side wall of the box body is provided with a light source, and the control processing mechanism is electrically connected to the display and the camera respectively.
  • the embodiment provides a touch panel automatic detecting device based on an automatic optical detecting program.
  • the touch panel automatic detecting device includes a device housing 1, a box 2, and a display 3 for displaying a detection result.
  • the work indicator light 4 for displaying the working state of the automatic detecting device, the foot pedal 5 for controlling the working state of the automatic detecting device, and the control processing mechanism (not shown).
  • the device casing 1 is a rectangular casing surrounded by a front side panel 11, a rear side panel 12, a left side panel 13, a right side panel 14, a top panel 15, and a bottom panel 16.
  • a first opening 17 is defined in a middle portion of the front side plate 11 for accommodating a product to be tested, and a test platform 6 parallel to the top plate 15 is formed at a lower edge 171 of the first opening 17 toward the inside of the device casing.
  • the test platform 6 is a plastic positioning fixture for positioning and fixing the product to be tested.
  • four support portions 18 and four sliding portions 19 are respectively provided at the four corners of the outer surface of the bottom plate 16.
  • the display 3 is disposed on the outer surface of the front side panel 11 of the device housing, and the lower edge of the display 3 is substantially at the same height as the upper edge 172 of the first opening 17.
  • the work indicator light 4 is also disposed on the outer surface of the front side panel 11 of the device housing and is located on the left side of the display 3. Further, a third opening 51 is provided in a lower portion of the front side panel 11, and the foot board 5 is provided in a space inside the third opening 51.
  • the casing 2 is a rectangular box formed by the front side wall 21, the rear side wall 22, the left side wall 23, the right side wall 24, the top wall 25 and the test platform 6.
  • a lower distance between the lower edge of the front side wall 21 and the test platform 5 is such that a second opening 26 is formed between the front side wall 21 and the test platform 5, and the second opening 26 is located inside the first opening 17 and
  • the first opening is the same size and shape, and can cooperate with the first opening 17 for accommodating the product to be tested.
  • the structure on the front side wall and the right side wall of the box body is omitted in FIG. 4, including the front side wall and the right side wall, and are respectively disposed on the front side.
  • the rear side wall 22 is a split door structure, and the opening direction is toward the outside of the box.
  • the rear side wall 22 includes a first rear side wall 221 hinged to the left side wall 23 and hinged to the right side wall 24.
  • the second rear side wall 222, the first rear side wall 221 and the second rear side wall 222 can respectively rotate toward the outside of the box around the respective hinges, so that the rear side wall is opened, so that the detecting personnel can replace the components inside the box.
  • a partial sectional view of the casing is shown in Fig. 5, and the front side wall and the right side wall of the casing are omitted in Fig. 5.
  • a camera 7 is disposed at a central position of the top wall 25 of the cabinet.
  • the lens of the camera is disposed toward the test platform 6 for taking a picture of the product to be tested placed on the test platform.
  • four white light sources 8 having a power of 20 W are disposed, and the longitudinal direction thereof is parallel to the test platform 5, and the center line of the light emitted by the light source is also parallel to the test platform 5.
  • the four light sources 8 are respectively fixed on the front side wall 21, the rear side wall 22, the left side wall 23, and the right side wall 24.
  • the two light sources are symmetrically disposed, and the light sources disposed on the front side wall 21 and the rear side wall 22 are first.
  • the group light source 81, and the light sources provided on the left side wall 23 and the right side wall 24 are a second group of light sources 82.
  • the height of the box is H
  • the height of the first group of light sources is 0.5H from the test platform
  • the height of the second group of light sources is 0.25H from the test platform.
  • sponge rubber is attached to the inner surfaces of the front side wall 21, the rear side wall 22, the left side wall 23, the right side wall 24, and the top wall 25.
  • the diffuse reflection environment of the light formed in the box provides a qualified shooting environment for the image quality of the camera to be tested, so that the image taken is only for the image.
  • the product will not be shadowed by other images due to specular reflection, etc., and ultimately affect the accuracy of the image analysis by the control processing mechanism.
  • control processing mechanism is electrically connected to the light source, the camera, the display, the work indicator light, and the foot pedal, respectively, to control the operation of the above components.
  • An automatic optical detection program is also embedded in the control processing mechanism for analyzing and processing the image result of the product to be tested taken by the camera, and feeding back the image result to the display. It can be understood that, in the present invention, the control processing mechanism is used for controlling the operation of the light source, the camera, the display, the work indicator light, and the foot pedal, and the automatic optical inspection program is used to judge whether the appearance of the product to be tested is qualified or not, and whether it belongs to the same product. To achieve the purpose of detection.
  • the control processing mechanism may be disposed inside the device casing to save space and compact the overall structure of the device, for example, disposed on the left side inside the third opening 51 in FIG. 1, or may be disposed outside the device casing as long as it can be implemented
  • the electrical connection of other components is sufficient. It is worth noting that in the present invention, when the image of the product to be tested is analyzed and processed by the automatic optical inspection program, the image quality is required to be high. If an image other than the product to be tested appears in the image, the image is automatically optically detected. Analyze the accuracy of the results. Therefore, the inventors conducted extensive research and comparative experiments on the setting parameters of the light source in the box and the materials attached to the inner surface of the case.
  • the difference between this comparative example and the second embodiment is that, in the present comparative example, six light sources are disposed inside the box, wherein two light sources are respectively fixed to the front side wall and the rear side wall, and two of the other four light sources are fixed. On the left side wall, the other two are fixed on the right side wall.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, two light sources are disposed inside the casing, and the two light sources are respectively fixed on the left side wall and the right side wall.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the light source power inside the casing is 10 W.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the light source power inside the cabinet is 50 W.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, four light sources are fixed to the top wall of the casing, and the center line of the light source emitting the light source is perpendicular to the test platform.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, two of the four light sources are fixed to the front side wall, and the other two are fixed to the rear side wall, on the left side wall and the right side. There is no light source on the wall.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the light source is obliquely disposed toward the test platform, and the angle between the center line of the light source and the test platform is 45°.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the light source is obliquely disposed toward the top wall of the casing, and the angle between the center line of the light source and the test platform is 135°.
  • This comparative example differs from the second embodiment only in that the light source is yellow light in the present comparative example.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the height of the first group of light sources from the test platform is 0.75H, and the height of the second group of light sources from the test platform is 0.5H.
  • the present comparative example differs from the second embodiment only in that, in the present comparative example, the inner surface of the front side wall, the rear side wall, the left side wall, the right side wall, and the top wall of the box are affixed with polychlorinated chlorine. Vinyl film.
  • Embodiment 2 The image of the product to be tested is clear and has no shadow
  • the set number of the light source, the power, the color of the light, the positional relationship between the light source and the test platform, and the height of the light source from the test platform are all obtained through a large number of experimental tests, and only
  • the arrangement of the light source is combined with the diffuse reflection material attached to the surface of the casing to form an ideal diffuse reflection environment, so that the image captured by the camera does not generate shadows other than the product to be tested.
  • the automatic image inspection program is used to accurately process the sample image for processing, and the correct analysis result is obtained.
  • the touch panel automatic detecting device of the present invention detects the appearance of the touch panel product
  • the detecting personnel first puts the product to be tested (ie, the touch panel product to be tested) into the test platform, and then presses the foot pedal with the foot, and the camera inside the box That is, the product to be tested is photographed, and after the image of the image of the product to be tested is analyzed and processed by the control processing mechanism, the analysis result of the image of the product to be tested is displayed on the display to realize the appearance detection of the product to be tested.

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Abstract

一种基于自动光学检测程序的触摸面板自动检测设备，包括中部设有第一开口（17）的设备外壳（1）、设于设备外壳（1）内部的箱体（2）、固设在设备外壳（1）外表面上的显示器（3）、以及控制处理机构；其中，设备外壳（1）的第一开口（17）内部设有测试平台（6），用于放置待测产品，箱体（2）由顶壁（25）、若干侧壁和测试平台（6）围合形成，箱体顶壁（25）固设有相机（7），箱体侧壁设有光源（8），控制处理机构分别与显示器（3）、相机（7）电性连接。利用该自动检测设备，可以代替人工对触摸面板外观进行检测、效率高、可靠性高、精度高、稳定性好。

Description

基于自动光学检测程序的触摸面板自动检测设备 技术领域
本发明涉及触摸屏产品的检测技术领域，具体是一种基于自动光学检测程序的触摸面板自动检测设备。
背景技术
随着智能手机、平板电脑等智能终端产品的快速发展，用于智能手机、平板电脑产品上的触摸屏生产量及生产种类也随相应需求而大幅增加，这就要求触摸屏在出厂前的质量检测应高效、快速、准确。对于触摸屏的质量检测主要包括两个方面，一方面是检测触摸屏表面是否有划痕、灰尘、内面印刷是否良好等指标，另一方面是在批量生产过程中检测触摸屏是否出现混料(即在一种触摸屏产品中混入其他型号触摸屏产品)、功能键图形或预留孔(例如home键、返回键、摄像头预留孔等等)位置印刷偏移等现象。
目前，在检测触摸屏外观时，一般是通过检测人员的视觉进行对比，即人工依靠视觉和脑内印象来比较标准产品和待测产品，以判断外观问题。这种方法存在几个问题：第一、人工检测的效率低下，出错率高、漏检误检率较高。第二、检测结果稳定性差，人工检测受到检测人员的主观影响较大，检查人员的经验、健康状况等都会影响检测结果。第三、检测精度差，人工依靠视觉判断触摸屏上图形的位置是否合格非常困难。因为距离的远近、角度的偏移都会造成视觉效果的改变，影响人工通过目测来准确判断功能键图形的尺寸和距离。
因此，对于触摸屏制造企业而言，实有必要开发一种能够代替人工检测触摸屏外观的机器设备以解决上述问题。
发明内容
本发明要解决的技术问题是提供一种能够代替人工检测触摸屏外观的触摸面板自动检测设备，能够准确、高效地检测触摸屏产品外观是否合格、是否有出现混料等问题，从而提高触摸屏检测的效率和稳定性。
为解决上述技术问题，本发明提供一种基于自动光学检测程序的触摸面板自动检测设备，包括中部设有第一开口的设备外壳、设于所述设备外壳内部的箱体、固设在所述设备外壳外表面上的显示器、以及控制处理机构；其中，所述设备外壳的第一开口内部设有测试平台，用于放置待测产品，所述箱体由顶壁、若干侧壁和所述测试平台围合形成，所述箱体顶壁固设有相机，所述箱体侧壁设有光源，所述控制处理机构分别与所述显示器、所述相机电性连接。
进一步地，所述箱体是由前侧壁、后侧壁、左侧壁、右侧壁、所述顶壁和所述测试平台共同围合而成的矩形箱体，且所述前侧壁的下边缘与所述测试平台之间间隔有距离，使所述前侧壁与所述测试平台之间形成第二开口，所述第二开口设于所述第一开口内侧，与所述第一开口共同用于容置待测产品。
进一步地，在所述箱体中，所述光源为四条，分别设置在所述前侧壁、后侧壁、左侧壁和右侧壁上。
进一步地，在所述箱体中，所述光源的功率为15-30W，该功率的数值范围包括了其中的任一具体点值，例如所述光源的功率为15W、20W、25W或30W。
进一步地，在所述箱体中，所述光源为条形光源，沿其长度方向平行于所述测试平台，且所述光源发出光线的中心线也平行于所述测试平台。
进一步地，在所述箱体中，所述光源发出的光为白光。
进一步地，在所述箱体中，所述前侧壁和所述后侧壁上的所述光源对称设置，为第一组光源，所述左侧壁和所述右侧壁上的所述光源对称设置，为第二组光源，所述第一组光源距离所述测试平台的高度大于所述第二组光源距离所述测试平台的高度。
优选地，所述箱体的高度为H，所述第一组光源距离所述测试平台的高度为0.5H,所述第二组光源距离所述测试平台的高度为0.25H。
进一步地，所述箱体顶壁、所述箱体侧壁的内表面贴有漫反射材料。
优选地，所述漫反射材料为海绵胶。
进一步地，所述后侧壁为对开门结构，包括与所述左侧壁连接的第一后侧壁、与所述右侧壁连接的第二后侧壁。
进一步地，所述控制处理机构中设有自动光学检测程序，所述自动光学检测程序用于分析处理所述相机拍摄的待测产品图像结果，并将图像结果反馈至所述显示器。
其中，自动光学检测（AutomaticOpticInspection,AOI)是指通过光学成像的方法获得被测对象的图像，经过特定处理算法处理及分析，与标准模板图像进行比较，获得被测对象缺陷的一种检测方法。
进一步地，测试平台为吸塑定位治具，用于固定放置所述待测产品。
进一步地，所述前侧板的下部设有第三开口，在所述第三开口中设有脚踏板，所述脚踏板与所述控制处理机构电性连接，用于控制所述自动检测设备的开启检测工作或者停止检测工作。
进一步地，在所述设备外壳上设有工作指示灯，用于指示所述自动检验设备的工作状态。
进一步地，所述设备外壳是由前侧板、后侧板、左侧板、右侧板、顶板和底板共同围合而成的矩形外壳，所述第一开口开设在所述前侧板的中部，所述显示器设置在所述前侧板的外表面上。
进一步地，所述设备外壳的底板下方设有支撑部和/或滑动部。
与现有技术相比，有益效果如下：
首先，本发明的触摸面板自动检测设备可以代替人工对触摸面板的外观进行检测，由于整个检测过程由设备硬件与软件结合完成，因此检验的效率高、可靠性高、精度高、稳定性好。其次，在本发明中，由于是利用自动光学检测程序对待测产品的图像进行分析，因此图像的成像质量非常关键，直接影响到自动光学检测程序能否对其进行准确的分析。为此，本发明对箱体内的光源数量、位置、功率、颜色等一系列参数均进行了大量试验，同时探究适用于箱体内部贴附的材料，最终成功在箱体内形成了漫反射的光源环境，使得相机拍摄出的待测产品的图像成像质量较高，图像上并未出现产品以外的阴影图案，从而保证了待测产品图像能够适用于自动光学检测程序。
附图说明
图1是实施例二基于自动光学检测程序的触摸面板自动检测设备的结构示意图。
图2是实施例二基于自动光学检测程序的触摸面板自动检测设备的结构示意图（图中省略了箱体）。
图3是实施例二基于自动光学检测程序的触摸面板自动检测设备的箱体的结构示意图。
图4是图3中箱体省略了前侧壁、右侧壁及相应光源的结构示意图。
图5是图1的局部剖面示意图。
具体实施方式
在本发明中，术语"上"、"下"、"左"、"右"、"前"、"后"、"顶"、"底"、"内"、"外"、"中"、"竖直"、"水平"、"横向"、"纵向"等指示的方位或位置关系为基于附图所示的方位或位置关系，仅用于说明各部件或组成部分之间的相对位置关系，并不特别限定各部件或组成部分的具体安装方位。
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语"上"在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本发明中的具体含义。
此外，术语"安装"、"设置"、"设有"、"连接"、"相连"应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
此外，术语"第一"、"第二"等主要是用于区分不同的部件或组成部分，并非用于表明或暗示所指示部件或组成部分的相对重要性和数量。除非另有说明，"多个"的含义为两个或两个以上。
下面结合实施例和附图对本发明的技术方案作进一步的说明。
实施例一
本实施例提供一种基于自动光学检测程序的触摸面板自动检测设备，包括中部设有第一开口的设备外壳、设于所述设备外壳内部的箱体、固设在所述设备外壳外表面上的显示器、以及控制处理机构；其中，所述设备外壳的第一开口内部设有测试平台，用于放置待测产品，所述箱体由顶壁、若干侧壁和所述测试平台围合形成，所述箱体顶壁固设有相机，所述箱体侧壁设有光源，所述控制处理机构分别与所述显示器、所述相机电性连接。
实施例二
本实施例提供一种基于自动光学检测程序的触摸面板自动检测设备，结合图1、图3所示，该触摸面板自动检测设备包括设备外壳1、箱体2、用于显示检测结果的显示器3、用于显示自动检测设备工作状态的工作指示灯4、用于控制自动检测设备工作状态的脚踏板5、控制处理机构（图未示）。
如图1、图2所示，设备外壳1是由前侧板11、后侧板12、左侧板13、右侧板14、顶板15和底板16围合而成的矩形外壳。在前侧板11的中部开设有第一开口17，用于容纳待测产品，在第一开口17的下边缘171处朝设备外壳内部延伸形成有与顶板15平行的测试平台6，该测试平台6为吸塑定位治具，用于对待测产品定位固定。本实施例中，为了方便地支撑或移动自动检测设备，在底板16外表面的四个角上还分别设有四个支撑部18和四个滑动部19。
显示器3设置在设备外壳前侧板11的外表面上，且显示器3的下边缘与第一开口17的上边缘172大致处于同一高度。工作指示灯4也设置在设备外壳前侧板11的外表面上，且位于显示器3的左侧。此外，在前侧板11的下部设有第三开口51，脚踏板5设置在第三开口51内部的空间中。检测人员踩下脚踏板时，自动检测设备开启检测工作；检测人员松开脚踏板时，自动检测设备停止检测工作。
结合图1、图3所示，箱体2是由前侧壁21、后侧壁22、左侧壁23、右侧壁24、顶壁25和测试平台6共同围合形成的矩形箱体。其中，前侧壁21的下边缘与测试平台5之间间隔有一定距离，使前侧壁21与测试平台5之间形成第二开口26，该第二开口26位于第一开口17内侧，且与第一开口大小、形状均相同，可与第一开口17共同配合用于容置待测产品。
在本实施例中，为了更清楚地显示箱体内部的结构，在图4中略去了箱体前侧壁、右侧壁上的结构，包括前侧壁、右侧壁以及分别设置在前侧壁、右侧壁上的光源。如图4所示，后侧壁22为对开门结构，且开门方向朝向箱体外部，该后侧壁22包括与左侧壁23铰接的第一后侧壁221、与右侧壁24铰接的第二后侧壁222，第一后侧壁221与第二后侧壁222可分别绕各自的铰接处朝向箱体外部转动，从而使后侧壁打开，方便检测人员更换箱体内部的部件。
另外，为了更清楚地显示箱体内部光源的设置，在图5中示出了箱体的部分剖面示意图，图5中略去了箱体的前侧壁和右侧壁。结合图3、图5所示，在箱体顶壁25的中心位置处设有相机7，该相机的镜头朝向测试平台6设置，用于对放置在测试平台上的待测产品进行拍照。另外，在本实施例中共设置有四条功率为20W的白光光源8，其长度方向与测试平台5相互平行，且光源发出光线的中心线也平行于测试平台5。四条光源8分别固定于前侧壁21、后侧壁22、左侧壁23、右侧壁24上，且两两对称设置，设于前侧壁21和后侧壁22上的光源为第一组光源81，设于左侧壁23和右侧壁24上的光源为第二组光源82。本实施例中，箱体的高度为H，第一组光源距离测试平台的高度为0.5H，第二组光源距离测试平台的高度为0.25H。此外，在前侧壁21、后侧壁22、左侧壁23、右侧壁24和顶壁25的内表面均贴有海绵胶。通过上述光源参数的设置以及箱体内表面海绵胶的贴附，使箱体内形成光线的漫反射环境，为相机拍摄待测产品的图像质量提供了合格的拍摄环境，使拍摄出来的图像仅为待测产品，不会因镜面反射等原因产生其他图像的阴影，最终影响控制处理机构对图像分析的准确度。
另外，在本实施例中，控制处理机构与上述光源、相机、显示器、工作指示灯、脚踏板分别电性连接，以控制上述部件的工作。在控制处理机构中还嵌入有自动光学检测程序，用于分析处理相机拍摄的待测产品图像结果，并将图像结果反馈至显示器。可以理解的是，在本发明中，控制处理机构用于控制光源、相机、显示器、工作指示灯、脚踏板的工作，利用自动光学检测程序判断待测产品的外观是否合格、是否属于同类产品，从而实现检测目的。该控制处理机构可以设置在设备外壳的内部，以节省空间、紧凑设备整体结构，例如设置在图1中第三开口51内部的左侧，也可以设置在设备外壳的外部，只要其能够实现与其它部件的电性连接即可。值得注意的是，在本发明中，利用自动光学检测程序对待测产品图像进行分析、处理时，对图像质量要求较高，如果图像中出现待测产品之外的影像，会影像自动光学检测程序分析结果的准确性。因此，发明人对于箱体内光源的设置参数以及箱体内表面所贴附的材料进行了大量研究和对比实验。
对比例一
本对比例与实施例二的不同之处仅在于，在本对比例中，箱体内部设置六条光源，其中两条光源分别固定于前侧壁、后侧壁，另外四条光源中有两条固定于左侧壁上，另外两条固定于右侧壁上。
对比例二
本对比例与实施例二的不同之处仅在于，在本对比例中，箱体内部设置两条光源，这两条光源分别固定于左侧壁、右侧壁上。
对比例三
本对比例与实施例二的不同之处仅在于，在本对比例中，箱体内部的光源功率为10W。
对比例四
本对比例与实施例二的不同之处仅在于，在本对比例中，箱体内部的光源功率为50W。
对比例五
本对比例与实施例二的不同之处仅在于，在本对比例中，四条光源固定于箱体顶壁，且光源发出光源的中心线垂直于测试平台设置。
对比例六
本对比例与实施例二的不同之处仅在于，在本对比例中，四条光源中有两条固定于前侧壁上，另外两条固定于后侧壁上，在左侧壁和右侧壁上并未设置光源。
对比例七
本对比例与实施例二的不同之处仅在于，在本对比例中，光源朝向测试平台方向倾斜设置，光源发出光线的中心线与测试平台之间的夹角为45°。
对比例八
本对比例与实施例二的不同之处仅在于，在本对比例中，光源朝向箱体顶壁方向倾斜设置，光源发出光线的中心线与测试平台之间的夹角为135°。
对比例九
本对比例与实施例二的不同之处仅在于，在本对比例中，光源为黄光。
对比例十
本对比例与实施例二的不同之处仅在于，在本对比例中，第一组光源距离测试平台的高度为0.75H,第二组光源距离测试平台的高度为0.5H。
对比例十一
本对比例与实施例二的不同之处仅在于，在本对比例中，在箱体的前侧壁、后侧壁、左侧壁、右侧壁、顶壁的内表面均贴有聚氯乙烯薄膜。
效果测试实验
分别利用实施例二、对比例一至十一的自动检测设备对待测产品进行拍照，并分析拍摄后的待测产品图像效果，结果如下表1所示：
表1
自动检测设备 拍摄待测产品图像效果
实施例二 待测产品图像清楚、无阴影
对比例一 待测产品图像中出现阴影
对比例二 待测产品图像中出现阴影
对比例三 待测产品图像中出现阴影
对比例四 待测产品图像中出现阴影
对比例五 待测产品图像中出现阴影
对比例六 待测产品图像中出现阴影
对比例七 待测产品图像中出现阴影
对比例八 待测产品图像中出现阴影
对比例九 待测产品图像中出现阴影
对比例十 待测产品图像中出现阴影
对比例十一 待测产品图像中出现阴影
通过上述对比实验可知，在本发明中，光源的设置数量、功率、发光颜色、光源与测试平台之间的位置关系、光源距离测试平台的高度等条件均是通过大量实验测试得到的，只有采用本发明中光源的设置方式，同时结合箱体内表面上贴附的漫反射材料，最终才能形成理想的漫反射环境，从而使相机拍摄的图像中不会产生除待测产品之外的阴影，可以采用自动光学检测程序准确对待测样品图像进行处理，得到正确的分析结果。
采用本发明的触摸面板自动检测设备检测触摸面板产品的外观时，检测人员首先将待测产品（即待测的触摸面板产品）放入测试平台中，然后用脚踩下脚踏板，箱体内的相机即对待测产品进行拍照，经过控制处理机构对拍摄的待测产品图像进行分析处理后，将待测产品图像的分析结果显示在显示器上，实现对待测产品的外观检测。

Claims (10)

  1. 一种基于自动光学检测程序的触摸面板自动检测设备，其特征在于：包括中部设有第一开口的设备外壳、设于所述设备外壳内部的箱体、固设在所述设备外壳外表面上的显示器、以及控制处理机构；其中，所述设备外壳的第一开口内部设有测试平台，用于放置待测产品，所述箱体由顶壁、若干侧壁和所述测试平台围合形成，所述箱体顶壁固设有相机，所述箱体侧壁设有光源，所述控制处理机构分别与所述显示器、所述相机电性连接。
  2. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：所述箱体是由前侧壁、后侧壁、左侧壁、右侧壁、所述顶壁和所述测试平台共同围合而成的矩形箱体，且所述前侧壁的下边缘与所述测试平台之间间隔有距离，使所述前侧壁与所述测试平台之间形成第二开口，所述第二开口设于所述第一开口内侧，与所述第一开口共同用于容置待测产品。
  3. 根据权利要求2所述的触摸面板自动检测设备，其特征在于：所述箱体顶壁、所述箱体侧壁的内表面贴有漫反射材料。
  4. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：在所述箱体中，所述光源为四条，分别设置在所述前侧壁、后侧壁、左侧壁和右侧壁上。
  5. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：在所述箱体中，所述光源为条形光源，沿其长度方向平行于所述测试平台，且所述光源发出光线的中心线也平行于所述测试平台。
  6. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：在所述箱体中，所述光源发出的光为白光。
  7. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：在所述箱体中，所述前侧壁和所述后侧壁上的所述光源对称设置，为第一组光源，所述左侧壁和所述右侧壁上的所述光源对称设置，为第二组光源，所述第一组光源距离所述测试平台的高度大于所述第二组光源距离所述测试平台的高度。
  8. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：所述后侧壁为对开门结构，包括与所述左侧壁连接的第一后侧壁、与所述右侧壁连接的第二后侧壁。
  9. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：所述控制处理机构中设有自动光学检测程序，所述自动光学检测程序用于分析处理所述相机拍摄的待测产品图像结果，并将图像结果反馈至所述显不器。
  10. 根据权利要求1所述的触摸面板自动检测设备，其特征在于：所述前侧板的下部设有第三开口，在所述第三开口中设有脚踏板，所述脚踏板与所述控制处理机构电性连接，用于控制所述触摸面板自动检测设备的开启检测工作或者停止检测工作。
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