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I'd like to check the outer diameter of the screw, but I wonder if the reflected light from the metal surface causes sensor malfunctions. Screws that have less than ten milimeter in diameter are not good and the tolerance should be within 0.2mm. Do you have any good ideas?: 我想在生產(chǎn)線上辨別螺絲的外徑，但是擔(dān)心金屬面的反射光會使傳感器發(fā)生誤動作。直徑10毫米以下的螺絲為NG，公差應(yīng)該是0.2 mm，有沒有好辦法？

How about using a fiber sensor that has a 0.1mm diameter beam spot? You set the beam spot on the edge of the outer diameter of the screw, and then if the beam returns the screw is good but if the beam doesn't return the screw is not good. Even if the object has a metal surface, a thru-beam type sensor that has a narrow beam spot can detect the object properly.: 試著使用光點直徑為0.1 mm的光纖傳感器怎么樣？將光點設(shè)在接近螺絲外徑處，如果光線返回則OK，不返回則為判定為錯誤。即使測量目標是金屬面，只要使用小光點的透過型傳感器，就能穩(wěn)定地檢測到哦。