發(fā)布時間：2018-03-12 09:32

  本文選題：傾斜圓面　切入點(diǎn)：三維激光掃描　出處：《光電子·激光》2017年06期 　論文類型：期刊論文

【摘要】：針對傾斜圓面的空間幾何特征,提出將三維激光掃描技術(shù)與虛擬環(huán)境引導(dǎo)定位結(jié)合的快速圓面直徑測量系統(tǒng)。該系統(tǒng)通過圓面邊緣端點(diǎn)來約束移動激光掃描儀的掃描視角與深度,并在虛擬環(huán)境下實(shí)時跟隨掃描儀軌跡構(gòu)建虛擬測量基準(zhǔn)面,進(jìn)而參考已標(biāo)識的端點(diǎn)與基準(zhǔn)面相對位移變化,來逐步規(guī)劃掃描儀的軸向運(yùn)動路徑,以此實(shí)現(xiàn)邊緣輪廓的自動高質(zhì)量采樣;依據(jù)高度特征變化識別定位圓面邊緣端點(diǎn),并結(jié)合空間投影和最小二乘原理擬合出圓面直徑。為驗證系統(tǒng)的精度和可靠性,對處于不同傾斜狀態(tài)的圓臺工件(55±5mm)進(jìn)行直徑檢測。結(jié)果顯示,系統(tǒng)可在3s內(nèi)完成直徑測量,檢測分辨率為5μm、檢測精度為20μm。實(shí)際運(yùn)行結(jié)果表明,該設(shè)計系統(tǒng)具有高自動性和高效性,能很好滿足在線生產(chǎn)中對傾斜圓面直徑的檢測要求。
[Abstract]:In view of the spatial geometric characteristics of inclined circular plane, A fast circular surface diameter measurement system combining 3D laser scanning technology and virtual environment guided positioning is proposed, which restricts the scanning angle and depth of the mobile laser scanner through the edge endpoints of the circular surface. In the virtual environment, the virtual measuring datum is constructed by following the scanner trajectory in real time, and then the axial motion path of the scanner is planned step by step by referring to the relative displacement between the identified endpoint and the datum. In order to verify the accuracy and reliability of the system, the automatic high quality sampling of edge contour is realized, and the endpoints of circular surface edge are identified according to the change of height characteristics, and the diameter of circular surface is fitted by combining spatial projection and least square principle, so as to verify the accuracy and reliability of the system. The diameter of the workpiece in different tilting state is 55 鹵5mm. The results show that the system can measure the diameter in 3 seconds, the resolution is 5 渭 m, and the precision is 20 渭 m. The actual operation results show that, The design system has high automatization and efficiency, and can well meet the requirements of measuring the diameter of inclined circular plane in on-line production.
【作者單位】： 重慶市計量質(zhì)量檢測研究院;重慶大學(xué)光電技術(shù)及系統(tǒng)教育部重點(diǎn)實(shí)驗室;
【基金】：國家質(zhì)量監(jiān)督檢驗檢疫總局科技計劃項目(2016QK214) 重慶市質(zhì)量技術(shù)監(jiān)督局科研計劃項目(CQZJKY2016028,CQZJKY2016024)資助項目
【分類號】：TN249
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本文編號：1600990