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                                                                                                                                                              您的位置>首頁>新聞動態> 外觀機器視覺檢測設備

                                                                                                                                                              發布時間: 2021-11-03    瀏覽量:345
                                                                                                                                                              機器視覺檢查

                                                                                                                                                                外觀機器視覺檢查裝置是指用機器代替人眼進行工件測量和判斷的裝置,分為機器視覺產品,即攝像裝置、CMOS和CCD兩種。 將攝像對象轉換為圖像信號,傳輸給專用的圖像處理系統,根據像素分布和亮度、顏色等信息轉換為數字信號。 圖像系統對這些信號進行各種運算以提取目標特征,并根據判別結果控制現場設備工作。

                                                                                                                                                                機器視覺外觀檢測原理:

                                                                                                                                                                產品表面的各種缺陷和缺陷必然在光學特性方面與產品本身不同。 光線射入產品表面時,各種傷痕和缺陷在反射和折射方面呈現出與周圍環境不同的外觀。 例如,均勻的光垂直入射到產品表面時,如果產品表面沒有傷痕,則出射方向不變,檢測出的光變得均勻。 產品表面有傷痕時,發光的光會發生變化,檢測出的圖像也會相應地發生變化。

                                                                                                                                                              外觀機器視覺檢測設備


                                                                                                                                                                由于有缺陷,應力集中和變形會在缺陷周圍發生,因此容易在圖像中觀察。 如果遇到缺口、裂紋、氣泡等透光性缺陷,光線會在缺陷的位置折射,光的強度會比周圍的光大,因此攝像機目標面檢測到的光也會相應變強。 吸收性雜質(例如沙粒)后,其缺陷位置的光會變弱,在相機目標表面檢測到的光會比周圍的光弱。 通過分析攝像頭采集到的圖像信號的強弱和圖像特性,檢測產品的缺陷,杜絕次品。

                                                                                                                                                                機器視覺外觀檢測設備的主要優點:

                                                                                                                                                                1、減少現場人員,提高生產效率

                                                                                                                                                                2、保證各工序的生產切實進行;

                                                                                                                                                                3、能進行高精度檢查;

                                                                                                                                                                4、檢測結果具有穩定性、一致性;

                                                                                                                                                                5、保證次品曝光和自動分揀,提高產品質量;

                                                                                                                                                                6、在高溫或有毒環境下不妨礙檢測過程;

                                                                                                                                                                7、非接觸檢測,在保證產品檢測準確率的同時,避免了產品的二次損傷。

                                                                                                                                                                使用機器視覺系統檢測裝置,可以代替傳統的人工檢測方式,在線24小時高速自動檢測產品外觀,實現產品表面缺陷的自動識別。

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