介紹對光纖端部位置的非接觸檢測方法。以面陣CCD 為傳感器，檢測光纖端部出射光斑，采用“重心法”提取光斑的特征點表征光纖的位置。著重分析了光源穩(wěn)定性、CCD 性能、AD 采樣位數(shù)對測量結(jié)果穩(wěn)定性的影響。實驗表明，基于特征點對光纖端部檢測，重復(fù)精度達到0.7%的CCD 像素，系統(tǒng)具有良好的穩(wěn)定性。
關(guān)鍵詞： 非接觸測量；光纖；位置測量；CCD 傳感器
Abstract: A noncontact method used for detecting end position of optic fiber is presented. With planar array CCD sensor, exit spot from optic fiber end is detected through extracting the characteristic points of spot for characterizing the position of optic fiber. The influence of light source stability, CCD performance and AD sampling digit on the stability of measuring results is analyzed. Detection of optic fiber end based on characteristic points, the experiments show that the system has a good stability and its repetition accuracy is as high as 0.7% of CCD pixel.
Key words: Contactless measurement; Optical fibers; Position measurement; CCD sensor