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                                                                                                                                                              您的位置>首頁>新聞動態> 資深工程師教你如何選擇合適的工業相機?

                                                                                                                                                              發布時間: 2021-10-13    瀏覽量:582
                                                                                                                                                              工業相機,機器視覺

                                                                                                                                                                在機器視覺這個行業,表面核心便是工業相機,往往一個相機的好壞很容易影響到整個視覺檢測系統的穩定性?

                                                                                                                                                                     那么你知道如何來選擇一個合適的工業相機么?接下來陜西永輝的小編給大家詳細講解下機器視覺檢測系統中選材的關鍵問題!

                                                                                                                                                                     1、根據APP情況區分使用CCD或CMOS攝像機

                                                                                                                                                                CCD工業相機主要應用于運動物體的圖像提取,當然隨著CMOS技術的發展,很多貼片機也采用了CMOS工業相機。 在視覺自動檢測的方案和行業中,一般多使用CCD產業用相機。 CMOS工業攝像機因成本低、功耗低而得到越來越廣泛的應用。

                                                                                                                                                                工業照相機鏡頭

                                                                                                                                                              康耐視工業相機


                                                                                                                                                                2、分辨率的選擇

                                                                                                                                                                首先考慮觀察對象物和測量對象物的精度,根據精度選擇分辨率。 攝像機的精度=單向視野范圍的大小/攝像機的單向分辨率。 攝像機的單向分辨率=單向視野范圍的大小/理論精度。

                                                                                                                                                                如果單視野長度為5mm,理論精度為0.02mm,則單向分辨率=5/0.02=250。 但是,為了提高系統的穩定性,一般不是以1個像素為單位對應1個測量/觀察精度值,而是選擇倍數4以上。 這樣的話,一個方向的分辨率為1000,130萬像素就足夠了。

                                                                                                                                                                其次,觀察工業相機的輸出,如果是體式觀察或機械軟件的分析識別,則分辨率高有幫助用VGA輸出或USB輸出在監視器上觀察時,也依賴于監視器的分辨率,工業相機的分辨率再高,如果監視器的分辨率不夠也沒有意義。 利用存儲卡和拍照功能,工業相機的分辨率高也很有用。

                                                                                                                                                                3、攝像機幀數的選擇

                                                                                                                                                                被測量物體有運動要求時,選擇幀數高的工業用相機。 但是,一般來說分辨率越高,幀數越低

                                                                                                                                                                4、與鏡頭的匹配

                                                                                                                                                                傳感器芯片的尺寸必須小于等于鏡頭尺寸,c或CS支架也必須一致。

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