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                                                                                                                                                              您的位置>首頁>新聞動態> 外觀檢查設備的工作原理

                                                                                                                                                              發布時間: 2021-09-22    瀏覽量:666
                                                                                                                                                              視覺檢測設備

                                                                                                                                                                自動視覺檢測設備可以自動篩選外觀不良的。 系統事先允許一定量的良品和不良品圖像保存在存儲器中,檢查時首先對照這些保存的圖像,同時可以對幾個特定的區域進行編程,設置幾個檢查項目,達到更細化的檢查,杜絕不良品

                                                                                                                                                                自動外觀檢測是基于機器視覺系統的檢測設備,可以代替傳統的人工檢測,在線高速自動檢測產品的外觀。 該設備的成功實施,使產品表面缺陷特征的自動識別成為可能,檢測速度有望實現生產線的同步。

                                                                                                                                                                那么,自動外觀檢查裝置的檢查原理是怎么樣的呢? 這里由陜西永輝給大家介紹。

                                                                                                                                                              自動視覺檢測設備


                                                                                                                                                                產品表面的各種缺陷在光學特性上與產品本身必然不同。 光線射入產品表面時,各種傷痕缺陷在反射、折射等方面會表現出與周圍不同的異樣。

                                                                                                                                                                例如,在均勻光垂直入射到產品表面的情況下,如果產品表面沒有損傷缺陷,則出射方向不變化,用機器視覺檢測出的光也均勻; 產品表面有缺陷時,射出的光會發生變化,檢測出的圖像也會發生變化。

                                                                                                                                                                由于缺陷的存在,其周圍會產生應力集中和應變,在圖像上也很容易觀察。 如果遇到裂紋、氣泡等透光型缺陷,光會在該缺陷的位置折射,光的強度會比周圍大,因此攝像機目標面檢測到的光也會相應變強。

                                                                                                                                                                遇到沙粒等光吸收型雜質時,其缺陷位置的光會變弱,攝像機靶面檢測到的光會比周圍的光弱。 機器通過視覺分析攝像機拍攝的圖像信號的強弱變化、圖像的特征,可以獲取相應的缺陷信息。

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