WO2019127252A1 - 工业视觉检测振动的方法及*** - Google Patents

工业视觉检测振动的方法及*** Download PDF

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Publication number
WO2019127252A1
WO2019127252A1 PCT/CN2017/119522 CN2017119522W WO2019127252A1 WO 2019127252 A1 WO2019127252 A1 WO 2019127252A1 CN 2017119522 W CN2017119522 W CN 2017119522W WO 2019127252 A1 WO2019127252 A1 WO 2019127252A1
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WO
WIPO (PCT)
Prior art keywords
change
moiré
industrial
vibration
visual inspection
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PCT/CN2017/119522
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English (en)
French (fr)
Inventor
阳光
Original Assignee
深圳配天智能技术研究院有限公司
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Application filed by 深圳配天智能技术研究院有限公司 filed Critical 深圳配天智能技术研究院有限公司
Priority to PCT/CN2017/119522 priority Critical patent/WO2019127252A1/zh
Priority to CN201780035743.4A priority patent/CN109313070A/zh
Publication of WO2019127252A1 publication Critical patent/WO2019127252A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

Definitions

  • the present invention relates to industrial vision systems, and more particularly to a method and system for industrial vision detection of vibration.
  • the Industrial Vision System is an image recognition machine for automatic inspection, workpiece machining and assembly automation, and control and monitoring of production processes.
  • Visual inspection is to use the machine instead of the human eye to make measurements and judgments.
  • Visual inspection refers to the conversion of the ingested target into an image signal by a machine vision product, which is transmitted to a dedicated image processing system, and converted into a digitized signal according to pixel distribution, brightness, color, etc.; the image system performs various operations on these signals. The characteristics of the target are extracted, and then the device actions on the site are controlled according to the result of the discrimination.
  • vibration detection In industrial visual inspection, sometimes the vibration of the environment is very demanding. Industrial vibration easily affects the work of the equipment structure, and also causes fatigue damage to the equipment structure, affecting its service life, and even causing damage to the instrument in the structure. Therefore, it is necessary to perform vibration suppression or change some detection parameters or the like according to vibration, and vibration detection is a prerequisite for performing vibration suppression and the like.
  • the method of vibration detection can be divided into a contact detection method and a non-contact detection method.
  • Common contact detection methods include piezoelectric ceramics, accelerometer sensors, gyroscope sensors, and the like.
  • Non-contact measurement methods include optical measurement methods, photoelectric position sensors, machine vision, and the like.
  • the technical problem to be solved by the present invention is to provide a system and method for detecting vibrations in an industrial vision, which can perform vibration detection simply and efficiently, and the detection cost is not high.
  • a technical solution adopted by the present invention is to provide a method for industrial visual detection of vibration, the method comprising: capturing and collecting a strip using a high frequency distribution disposed in an industrial visual inspection area by a photographing device And the moiré generated on the image; analyzing and judging whether the moiré changes, thereby determining whether the industrial visual inspection area is vibrating.
  • another technical solution adopted by the present invention is to provide a system for industrial visual detection of vibration, the system comprising a strip of high frequency distribution, a photographing device and an analyzing device, wherein the strip setting In the industrial visual inspection area, and vibrating with the vibration of the industrial visual inspection area, when the strip is photographed by the photographing device, moiré can be generated on the image captured by the photographing; At a position where the strip can be taken, for capturing the strip in real time to collect moiré generated on the image using the strip; the analyzing device is coupled to the photographing device for analysis and A determination is made as to whether the moiré changes, thereby determining whether the industrial visual inspection area is vibrating.
  • the method for detecting vibration of the industrial vision of the present invention comprises: photographing and collecting a strip with a high frequency distribution set in an industrial visual inspection area by an image capturing device on the image The generated moiré; analyzing and judging whether the moiré changes, thereby determining whether the industrial visual inspection area is vibrating. Since the strip is placed in the industrial visual inspection area, when the strip is photographed, moiré can be generated on the image captured by the photograph, and the moiré is analyzed and judged to determine whether the moiré changes in the industrial visual inspection area. In this way, the vibration detection can be performed simply and efficiently, and only one strip is set, and the photographing can be performed, and the detection cost is not high.
  • FIG. 1 is a schematic structural view of an embodiment of a system for detecting vibration of an industrial vision according to the present invention
  • FIG. 2 is a schematic structural view of another embodiment of a system for detecting visual vibration of the present invention.
  • FIG. 3 is a schematic structural view of still another embodiment of the system for detecting visual vibration of the present invention.
  • FIG. 4 is a schematic structural view of still another embodiment of the system for detecting visual vibration of the present invention.
  • FIG. 5 is a flow chart of an embodiment of a method for detecting vibration of an industrial vision according to the present invention.
  • FIG. 6 is a flow chart of another embodiment of a method for detecting vibration of an industrial vision according to the present invention.
  • Fig. 7 is a flow chart showing still another embodiment of the method for detecting vibration of industrial vision according to the present invention.
  • FIG. 1 is a schematic structural view of an embodiment of a system for detecting vibration of an industrial vision according to the present invention.
  • the system 100 includes a strip 10 having a high frequency distribution, a photographing device 20, and an analyzing device 30.
  • the strip 10 is disposed in the industrial visual inspection area 200 (the specific arrangement position of the strip 10 is not shown in FIG. 1 and is merely a schematic illustration), and the strip 10 of the high frequency distribution is densely distributed with texture or stripes.
  • a strip (the shape of the texture or the stripe is not limited); the strip 10 is disposed in the industrial vision detecting area 200, and when the environment around the industrial visual detecting area 200 vibrates, the industrial visual detecting area 200 is caused to vibrate.
  • the strips provided in the industrial vision detecting area 200 are vibrated in accordance with the vibration of the industrial visual detecting area 200, and when the strip 10 is photographed by the photographing apparatus 20, moiré can be generated on the image captured by the photographing.
  • Moiré is a kind of high-frequency interference fringe that appears on a photosensitive element in a digital camera or scanner. It is a high-frequency irregular stripe that causes the image to appear colored. Simply put, moiré is a manifestation of the beat principle. Mathematically, an equal amplitude sine wave with two frequencies close to each other, the amplitude of the composite signal will vary according to the difference between the two frequencies. Similarly, stripe superposition with slightly different spatial frequencies will also result in a beat due to the difference in stripe spacing and the coincidence of the coincidence position. If the spatial frequency of the pixel of the photosensitive element is close to the spatial frequency of the stripe in the image, a moiré is generated. Therefore, components capable of sensitizing and generating high-frequency interference can be used as strips, for example, pixelated screens, high-frequency, high-resolution, densely spaced components with many regular shapes, etc. .
  • the spatial frequency of the pixels of the photosensitive element of the sensor in the imaging device 20 is close to the spatial frequency of the stripe in the image, and thus a moiré is generated.
  • the industrial visual inspection area 200 refers to an area for industrial visual inspection.
  • the system needs to detect whether the industrial visual inspection area 200 is vibrating. Therefore, the strip 10 for detection should be vibrated with the vibration of the industrial visual inspection area 200, so that industrial visual inspection is detected by detecting whether the strip vibrates. Whether or not the region 200 vibrates further determines whether or not the surrounding environment of the industrial visual inspection region 200 vibrates.
  • the photographing device 20 is disposed at a position of the recordable strip 10 for photographing the strip 10 in real time to collect moiré generated on the image using the strip 10.
  • the photographing device 20 is for photographing the moiré generated on the image by the strip 10, and therefore, the setting position of the photographing device 20 should be the position at which the strip 10 can be photographed. At the time of actual setting, the position set by the photographing device 20 generally does not affect the normal operation of the industrial visual inspection area 200, and the strip 10 can be photographed.
  • the photographing device 20 can be a camera, so that the existing photographing device can be further utilized without additional equipment 20, which can save cost.
  • the distribution of the collected moiré is the current distance between the imaging device 20 and the strip 10, the discretization of the spatial frequency signal of the pixels of the photosensitive element in the sensor of the imaging device 20, and the current streak in the image.
  • the spatial frequency signal is discretized by the position of the strip 10 as determined by the parameters of the three.
  • the industrial visual inspection area 200 vibrates, the industrial visual inspection area 200 is affected and vibrated, and the position of the strip 10 is slightly changed compared to the position of the strip 10 before the vibration occurs, giving the image a moiré pattern.
  • the change will be very obvious.
  • the current distance between the imaging device 20 and the strip 10 the discretization of the spatial frequency signal of the pixels of the photosensitive element in the sensor of the imaging device 20, and the current streak in the image can be adjusted.
  • At least one of the three parameters of the position of the strip 10 of the spatial frequency signal discretization adjusts the degree of change of the moiré to meet the actual detection requirements.
  • the resolution of the lens of the photographing device 20 can be increased, and the higher the resolution, the higher the sensitivity of detecting the change of the moiré; or, the position of the photographing device 20 is changed because of photographing.
  • the angle of the device 20 and the strip 10 may cause moiré in the image, and the angle of the photographing device 20 and the strip 10 may be changed by changing the position of the photographing device 20, thereby changing the sensitivity of detecting the change of the moiré; or changing the photographing device 20 focal length; and so on.
  • the analyzing device 30 is connected to the photographing device 20, and when the photographing device 20 collects the moiré generated in the image by using the strip 10, it sends it to the analyzing device 30, and the analyzing device 30 according to the moiré in the image collected by the photographing device 20, It is analyzed and judged whether or not the moiré generated in the image is changed by the strip 10, thereby determining whether or not the industrial visual inspection region 200 is vibrated.
  • the distribution of the moiré on the image is only It is related to the position of the strip 10.
  • the analyzing device 30 can compare the difference between the moiré on the image acquired this time and the moiré on the standard image (ie, the moiré collected on the image when no vibration occurs), thereby determining the use of the strip 10 Whether or not the moiré generated on the image changes, thereby determining whether or not the industrial visual inspection area 200 vibrates.
  • the system for detecting vibration of an industrial vision includes a strip of a high frequency distribution, a photographing device, and an analyzing device, wherein the strip is disposed in an industrial visual inspection area and can follow the vibration of the industrial visual inspection area. Vibrating, when the strip is photographed by the photographing device, moiré can be generated on the image captured by the photographing; the photographing device is disposed at a position where the strip can be photographed, and is used for photographing the strip in real time. And acquiring the moiré generated on the image by using the strip; the analyzing device is connected to the photographing device, configured to analyze and determine whether the moiré changes, thereby determining whether the industrial visual detection area is Vibration occurred.
  • the strip Since the strip is placed in the industrial visual inspection area, the strip can produce moiré on the image when photographed, and after detecting the moiré generated on the image by using the strip, analyze and judge whether the moiré is The change occurs to determine whether the industrial visual inspection area is vibrating. In this way, the vibration detection can be performed simply and effectively, and only one strip is set, and the photographing can be performed, and the detection cost is not high.
  • the strip 10 is disposed around the industrial vision inspection area 200.
  • the strip 10 is disposed around the industrial visual inspection area 200, and on the one hand, it is convenient to detect whether or not vibration is generated, and on the other hand, it does not affect the normal operation of the industrial visual inspection area 200.
  • the strips 10 are disposed on the left and right sides of the industrial visual inspection area 200.
  • the photographing device 20 is disposed at a position facing the center 200 of the industrial visual inspection area.
  • the strip 10 is disposed around the industrial visual inspection area 200, and the photographing device 20 is disposed at a position facing the center of the industrial visual inspection area 200 such that the strip 10 is located at the edge of the field of view of the photographing apparatus 20, center
  • the photographing device 20 detects the use of the strip in the image. The change in the moiré produced on the top so that it is possible to determine whether vibration is currently occurring.
  • the analysis device 30 is further configured to determine the amount of change in vibration of the industrial vision detection region 200 based on the amount of change in the moiré.
  • the amount of change in the moiré changes is roughly linearly segmented, and the amount of change in the vibration can be roughly obtained based on the amount of change in the detected moiré.
  • different, known vibration intensities may be predetermined to the industrial vision detection region 200, and under these different, known vibration intensities, moiré is detected separately.
  • the change is based on the different, known vibrational intensities and the corresponding changes in the detected moiré and is preserved.
  • the analyzing device 30 is for determining the amount of change in the vibration of the industrial vision detecting region 200 by the relationship between the amount of change in the pre-stored moiré and the amount of change in the vibration, and further the amount of change in the moiré.
  • the relationship between the amount of change in moiré and the amount of change in vibration may be a linear relationship or other functional relationship, which needs to be determined according to actual detection.
  • the system further includes: an adjustment device 40.
  • the adjustment device 40 is coupled to the industrial vision system 300 and the analysis device 30, respectively, for adjusting the detection parameters of the industrial vision system 300 based on the amount of change in vibration determined by the analysis device 40.
  • the detection parameters of the industrial vision system 300 can be made more in line with actual detection conditions.
  • the system further includes: an alarm device 50.
  • the alarm device 50 is coupled to the analysis device 30 for issuing an alarm signal when the analysis device 30 determines that the industrial vision detection region 200 is vibrating.
  • a warning signal can be provided to the entire visual pipeline for the job to be adjusted accordingly.
  • FIG. 5 is a flowchart of an embodiment of a method for detecting vibration of an industrial vision according to the present invention. It should be noted that the method of the present embodiment may be implemented by using the above system or other systems adopting the principle of the method of the present embodiment. For a detailed description of the related content, please refer to the above system section, which will not be described here. Wherein the method comprises:
  • Step S101 The moiré generated on the image by the strip of the high-frequency distribution set in the industrial visual inspection area is photographed and collected by the photographing device.
  • Step S102 Analyze and determine whether the moiré changes, and thereby determine whether the industrial visual inspection area is vibrating.
  • Embodiments of the present invention capture and collect moiré generated on an image by using a strip of a high-frequency distribution disposed in an industrial visual inspection area by an imaging device; analyze and determine whether the moiré changes, thereby determining whether an industrial visual inspection area is Vibration occurred. Since the strip is placed in the industrial visual inspection area, the strip can generate moiré on the image when photographed, and when the moiré is photographed, analyze and judge whether the moiré changes or not, thereby determining the industrial visual inspection area. Whether vibration occurs or not, in this way, vibration detection can be performed simply and efficiently, and only one belt is set, and photographing can be performed, and the detection cost is not high.
  • the method may further include:
  • Step S103 determining the amount of change in vibration of the industrial visual detection area based on the amount of change in the moiré.
  • the step S102 may further include: determining, by the relationship between the amount of change of the pre-stored moiré and the amount of change of the vibration, and determining the amount of change in the vibration of the industrial visual detection area according to the amount of change in the moiré.
  • the method further includes:
  • Step S104 Adjust the detection parameters of the industrial vision system according to the amount of change of the vibration.
  • the method further comprises: when determining that the industrial visual detection area is vibrating, issuing an alarm signal.
  • the strip is disposed around the industrial visual inspection area.
  • the strip is disposed on the left and right sides of the industrial visual inspection area, and the photographing device is disposed at a position facing the center of the industrial visual inspection area.
  • the photographing device is a camera.

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  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
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Abstract

本发明公开了一种工业视觉检测振动的方法及***，该方法包括：通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹；分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。通过这种方式，本发明能够简单有效地进行振动检测，且检测成本不高。

Description

工业视觉检测振动的方法及***
【技术领域】
本发明公开了涉及工业视觉***，特别是涉及一种工业视觉检测振动的方法及***。
【背景技术】
工业视觉***是用于自动检验、工件加工和装配自动化以及生产过程的控制和监视的图像识别机器。视觉检测就是用机器代替人眼来做测量和判断。视觉检测是指通过机器视觉产品将被摄取目标转换成图像信号，传送给专用的图像处理***，根据像素分布和亮度、颜色等信息，转变成数字化信号；图像***对这些信号进行各种运算来抽取目标的特征，进而根据判别的结果来控制现场的设备动作。
工业视觉检测时，有时对环境的振动非常苛刻。工业振动容易影响设备结构的工作，还引起设备结构产生疲劳破坏，影响其使用寿命，甚至导致结构中仪器的损坏。因此，需要进行振动抑制或者根据振动改变一些检测参数等等，而振动检测是进行振动抑制等措施的先决条件。振动检测的方法可以分为接触式检测方法和非接触式检测方法。常见的接触式检测方法有采用压电陶瓷、加速度计传感器、陀螺仪传感器等等。非接触式的测量方法包括光学测量方法、光电位置传感器、机器视觉等方法。
但是，本申请的发明人在长期的研发过程中发现，在工业视觉检测时，上述方法检测成本高。
【发明内容】
本发明主要解决的技术问题是提供一种工业视觉检测振动的***及方法，能够简单有效地进行振动检测，且检测成本不高。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种工业视觉检测振动的方法，所述方法包括：通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹；分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种工业视觉检测振动的***，所述***包括高频分布的条带、拍摄装置及分析装置，其中，所述条带设置在工业视觉检测区域，且可随所述工业视觉检测区域的振动而振动，当所述条带被所述拍摄装置拍摄时，可在拍摄采集得到的图像上产生摩尔纹；所述拍摄装置设置在可拍摄所述条带的位置，用于实时拍摄所述条带，以采集利用所述条带而在图像上产生的摩尔纹；所述分析装置与所述拍摄装置连接，用于分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。
本申请的有益效果是：区别于现有技术的情况，本发明的工业视觉检测振动的方法包括：通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹；分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。由于将条带设置在工业视觉检测区域，该条带在被拍摄时，可在拍摄采集得到的图像上产生摩尔纹，分析并判断该摩尔纹是否发生变化，进而确定工业视觉检测区域是否发生振动，通过这种方式，能够简单有效地进行振动检测，且仅仅设置一条带，对其进行拍摄即可，检测成本不高。
【附图说明】
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本发明工业视觉检测振动的***一实施方式的结构示意图；
图2是本发明工业视觉检测振动的***另一实施方式的结构示意图；
图3是本发明工业视觉检测振动的***又一实施方式的结构示意图；
图4是本发明工业视觉检测振动的***又一实施方式的结构示意图；
图5是本发明工业视觉检测振动的方法一实施方式的流程图；
图6是本发明工业视觉检测振动的方法另一实施方式的流程图；
图7是本发明工业视觉检测振动的方法又一实施方式的流程图。
【具体实施方式】
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，均属于本发明保护的范围。
参阅图1，图1是本发明工业视觉检测振动的***一实施方式的结构示意图，该***100包括：高频分布的条带10、拍摄装置20及分析装置30。
条带10设置在工业视觉检测区域200（图1中所示并不代表条带10的具体设置位置，仅仅只是一种示意），高频分布的条带10是指间隔密集分布有纹理或条纹（纹理或条纹的形状不做限定）的条带；条带10是设置在工业视觉检测区域200的，当工业视觉检测区域200周围的环境发生振动时，会带动工业视觉检测区域200发生振动，进行使设置在工业视觉检测区域200的条带随工业视觉检测区域200的振动而振动，当条带10被拍摄装置20拍摄时，可在拍摄采集得到的图像上产生摩尔纹。
摩尔纹是一种在数码照相机或者扫描仪等设备上，感光元件出现的高频干扰的条纹，是一种会使图像出现彩色的高频率不规则的条纹。简单的说，摩尔纹是差拍原理的一种表现。从数学上讲，两个频率接近的等幅正弦波叠加，合成信号的幅度将按照两个频率之差变化。同样，空间频率略有差异的条纹叠加，由于条纹间隔的差异、重合位置会逐渐偏移，也会形成差拍。如果感光元件像素的空间频率与影像中条纹的空间频率接近，就会产生摩尔纹。因此，能够感光的、发生高频干扰的元件，均可以作为条带，例如：像素化的屏幕，高频的、分辨率很高的、间隔密集分布都很多规则形状的图形的元件，等等。
在本实施方式中，拍摄装置20中传感器的感光元件的像素的空间频率与条带在图像中条纹的空间频率接近，于是产生摩尔纹。
工业视觉检测区域200是指用于工业视觉检测的区域。该***需要检测工业视觉检测区域200是否发生振动，因此，用于检测的条带10应该可随工业视觉检测区域200的振动而振动，这样通过检测条带是否发生振动，而检测出工业视觉检测区域200是否发生振动，进一步确定工业视觉检测区域200的周围环境是否发生振动。
拍摄装置20设置在可拍摄条带10的位置，用于实时拍摄条带10，以采集利用条带10而在图像上产生的摩尔纹。
拍摄装置20是用来拍摄利用条带10而在图像上产生的摩尔纹的，因此，拍摄装置20的设置位置应该是可以拍摄条带10的位置。在实际设置的时候，拍摄装置20设置的位置一般是不影响工业视觉检测区域200的正常作业，且可拍摄条带10。
在一实施方式中，拍摄装置20可以为相机，这样可以进一步利用现有的拍摄装置，不用额外配备拍摄装置20，可以节约成本。
需要说明的是，采集到的摩尔纹的分布是拍摄装置20与条带10之间当前的距离、拍摄装置20的传感器中感光元件的像素的空间频率信号的离散化、及当前在图像中条纹的空间频率信号离散化的条带10的位置这三者的参数确定的。当拍摄装置20与条带10之间当前的距离、拍摄装置20的传感器中感光元件的像素的空间频率信号的离散化这两个参数确定后，摩尔纹的分布只与当前在图像中条纹的空间频率信号离散化的条带10的位置有关。一旦工业视觉检测区域200周围环境发生振动，工业视觉检测区域200受到影响也振动，进而带动条带10的位置相比没有发生振动前条带10的位置会有微弱的变化，带给图像中摩尔纹的变化会非常明显。在实际应用中，根据检测的要求，可以调整拍摄装置20与条带10之间当前的距离、拍摄装置20的传感器中感光元件的像素的空间频率信号的离散化、及当前在图像中条纹的空间频率信号离散化的条带10的位置这三者的参数中的至少一个，来调整摩尔纹的变化程度，从而来满足实际检测的需求。
例如：如果想要增加检测摩尔纹的变化灵敏度，可以增加拍摄装置20的镜头的分辨率，分辨率越高，则检测摩尔纹的变化灵敏度越高；或者，改变拍摄装置20的位置，因为拍摄装置20与条带10的角度会导致图像中的摩尔纹，通过改变拍摄装置20的位置，而改变拍摄装置20与条带10的角度，进而改变检测摩尔纹的变化灵敏度；或者，改变拍摄装置20的焦距；等等。
分析装置30与拍摄装置20连接，当拍摄装置20采集到利用条带10而在图像中产生的摩尔纹后，发送给分析装置30，分析装置30根据拍摄装置20采集到的图像中摩尔纹，分析并判断利用条带10而在图像中产生的摩尔纹是否发生变化，进而确定工业视觉检测区域200是否发生振动。
在实际应用中，当拍摄装置20与条带10之间当前的距离、拍摄装置20的传感器中感光元件的像素的空间频率信号的离散化这两个参数确定后，图像上摩尔纹的分布只与条带10的位置有关。一旦工业视觉检测区域200周围环境发生振动，工业视觉检测区域200受到影响也振动，进而带动条带10的位置相比没有发生振动前条带10的位置会有微弱的变化，带给图像上摩尔纹的变化会非常明显。因此，分析装置30可以比较本次采集的图像上的摩尔纹与标准图像上的摩尔纹（即没有发生振动时采集到图像上的摩尔纹）之间的差异，即可确定利用条带10而在图像上产生的摩尔纹是否发生变化，进而确定工业视觉检测区域200是否发生振动。
本发明实施方式的工业视觉检测振动的***包括高频分布的条带、拍摄装置及分析装置，其中，所述条带设置在工业视觉检测区域，且可随所述工业视觉检测区域的振动而振动，当所述条带被所述拍摄装置拍摄时，可在拍摄采集得到的图像上产生摩尔纹；所述拍摄装置设置在可拍摄所述条带的位置，用于实时拍摄所述条带，以采集利用所述条带而在图像上产生的摩尔纹；所述分析装置与所述拍摄装置连接，用于分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。由于将条带设置在工业视觉检测区域，该条带在被拍摄时，可在图像上产生摩尔纹，当拍摄到利用条带而在图像上产生的摩尔纹后，分析并判断该摩尔纹是否发生变化，进而确定工业视觉检测区域是否发生振动，通过这种方式，能够简单有效地进行振动检测，且仅仅设置一条带，对其进行拍照即可，检测成本不高。
在一实施方式中，条带10设置在工业视觉检测区域200的周围。将条带10设置在工业视觉检测区域200的周围，一方面方便检测是否有产生振动，另一方面也不会影响工业视觉检测区域200正常的作业。
进一步，结合参见图2，在一实施方式中，条带10设置在工业视觉检测区域200的左右两侧。
在一实施方式中，为了更好地采集利用条带10而在图像上产生的摩尔纹，拍摄装置20设置在正对工业视觉检测区域中心200的位置。
在本实施方式中，条带10设置在工业视觉检测区域200的周围，而拍摄装置20设置在正对工业视觉检测区域中心200的位置，这样使得条带10位于拍摄装置20视野的边缘，中心区域作为被采集对象，当因周围环境的振动使工业视觉检测区域中心200发生振动时，拍摄装置20与被采集的中心区域间发生相对位移，则拍摄装置20会检测到利用条带而在图像上产生的摩尔纹的变化，这样可以确定当前是否发生振动。
其中，分析装置30还用于根据摩尔纹发生变化的变化量，进而确定工业视觉检测区域200发生振动的变化量。
以标准图像上的摩尔纹为对照，对摩尔纹发生变化的变化量进行大概的线性分段，根据检测出来的摩尔纹的变化量，就可以大概获知振动的变化量。
在一实施方式中，为了精确确定振动的变化量，可以向工业视觉检测区域200预先给出不同的、已知的振动强度，在这些不同的、已知的振动强度下，分别检测摩尔纹的变化，根据不同的、已知的振动强度以及检测出来的对应的摩尔纹的变化作出相应的关系，并保存下来。分析装置30用于通过预存的摩尔纹的变化量与振动的变化量之间的关系，进而根据摩尔纹发生变化的变化量，而确定工业视觉检测区域200发生振动的变化量。摩尔纹的变化量与振动的变化量之间的关系可以是线性关系，也可以是其他的函数关系，需要根据实际的检测确定。
结合参阅图3，在本实施方式中，该***还包括：调整装置40。
调整装置40分别与工业视觉***300和分析装置30连接，用于根据分析装置40确定的振动的变化量，调整工业视觉***300的检测参数。
通过这种方式，可以使得工业视觉***300的检测参数更加符合实际的检测条件。
结合参见图4，在本实施方式中，该***还包括：报警装置50。
报警装置50与分析装置30连接，用于当分析装置30确定工业视觉检测区域200发生振动时，发出报警信号。进而可以对整个视觉流水线提供警告信号，以供作业可以即时做出相应的调整。
参见图5，图5是本发明工业视觉检测振动的方法一实施方式的流程图，需要说明的是，本实施方式的方法可以采用上述的***或者其他采用本实施方式的方法原理的***执行，相关内容的详细说明请参见上述***部分，在此不再赘叙。其中，该方法包括：
步骤S101：通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹。
步骤S102：分析并判断该摩尔纹是否发生变化，进而确定工业视觉检测区域是否发生振动。
本发明实施方式通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹；分析并判断该摩尔纹是否发生变化，进而确定工业视觉检测区域是否发生振动。由于将条带设置在工业视觉检测区域，该条带在被拍摄时，可在图像上产生摩尔纹，当拍摄到摩尔纹后，分析并判断该摩尔纹是否发生变化，进而确定工业视觉检测区域是否发生振动，通过这种方式，能够简单有效地进行振动检测，且仅仅设置一条带，对其进行拍照即可，检测成本不高。
其中，结合参见图6，步骤S102之后，还可以包括：
步骤S103：根据该摩尔纹发生变化的变化量，进而确定工业视觉检测区域发生振动的变化量。
其中，步骤S102具体还可以包括：通过预存的摩尔纹的变化量与振动的变化量之间的关系，进而根据该摩尔纹发生变化的变化量，而确定工业视觉检测区域发生振动的变化量
其中，结合参见图7，该方法还包括：
步骤S104：根据振动的变化量，调整工业视觉***的检测参数。
其中，该方法还包括：当确定工业视觉检测区域发生振动时，发出报警信号。
其中，该条带设置在工业视觉检测区域的周围。
其中，该条带设置在工业视觉检测区域的左右两侧，该拍摄装置设置在正对工业视觉检测区域中心的位置。
其中，该拍摄装置为相机。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围。

Claims (16)

  1. 一种工业视觉检测振动的方法，其中，所述方法包括：
    通过拍摄装置拍摄并采集利用设置在工业视觉检测区域的高频分布的条带而在图像上产生的摩尔纹；
    分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。
  2. 根据权利要求1所述的方法，其中，所述分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动之后，还包括：
    根据所述摩尔纹发生变化的变化量，进而确定所述工业视觉检测区域发生振动的变化量。
  3. 根据权利要求2所述的方法，其中，所述根据所述摩尔纹发生变化的变化量，进而确定所述工业视觉检测区域发生振动的变化量，包括：
    通过预存的摩尔纹的变化量与振动的变化量之间的关系，进而根据所述摩尔纹发生变化的变化量，而确定所述工业视觉检测区域发生振动的变化量。
  4. 根据权利要求2所述的方法，其中，所述方法还包括：
    根据所述振动的变化量，调整工业视觉***的检测参数。
  5. 根据权利要求1所述的方法，其中，所述方法还包括：
    当确定所述工业视觉检测区域发生振动时，发出报警信号。
  6. 根据权利要求1所述的方法，其中，所述条带设置在所述工业视觉检测区域的周围。
  7. 根据权利要求6所述的方法，其中，所述条带设置在所述工业视觉检测区域的左右两侧，所述拍摄装置设置在正对所述工业视觉检测区域中心的位置。
  8. 根据权利要求1所述的方法，其中，所述拍摄装置为相机。
  9. 一种工业视觉检测振动的***，其中，所述***包括高频分布的条带、拍摄装置及分析装置，其中，
    所述条带设置在工业视觉检测区域，且可随所述工业视觉检测区域的振动而振动，当所述条带被所述拍摄装置拍摄时，可在拍摄采集得到的图像上产生摩尔纹；
    所述拍摄装置设置在可拍摄所述条带的位置，用于实时拍摄所述条带，以采集利用所述条带而在图像上产生的摩尔纹；
    所述分析装置与所述拍摄装置连接，用于分析并判断所述摩尔纹是否发生变化，进而确定所述工业视觉检测区域是否发生振动。
  10. 根据权利要求9所述的***，其中，所述条带设置在所述工业视觉检测区域的周围。
  11. 根据权利要求10所述的***，其中，所述条带设置在所述工业视觉检测区域的左右两侧，所述拍摄装置设置在正对所述工业视觉检测区域中心的位置。
  12. 根据权利要求9所述的***，其中，所述分析装置还用于根据所述摩尔纹发生变化的变化量，进而确定所述工业视觉检测区域发生振动的变化量。
  13. 根据权利要求12所述的***，其中，所述分析装置用于通过预存的摩尔纹的变化量与振动的变化量之间的关系，进而根据所述摩尔纹发生变化的变化量，而确定所述工业视觉检测区域发生振动的变化量。
  14. 根据权利要求12所述的***，其中，所述***还包括：
    调整装置，分别与工业视觉***和所述分析装置连接，用于根据所述分析装置确定的振动的变化量，调整所述工业视觉***的检测参数。
  15. 根据权利要求9所述的***，其中，所述***还包括：
    报警装置，与所述分析装置连接，用于当所述分析装置确定所述工业视觉检测区域发生振动时，发出报警信号。
  16. 根据权利要求1所述的***，其中，所述拍摄装置为相机。
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