基于视野锥的维修可视性分析方法改进

Improvement of maintenance visibility analysis method based on human visual field cone

[目的]基于人眼视野区域建立的视野锥维修可视性分析方法无法定量评估可视性及视野遮挡的情况,需要建立合理的评价模型以对该方法进行改进。[方法]首先,根据人眼视野锥建立物体平面视野范围模型,确定物体在视野中的范围,结合视距与物体体积完成视野范围的评估;然后,建立人眼到物体各部分的视线模型,判断各视线与其他物体的相交情况,确定物体各部分的遮挡情况;最后,量化评估结果,并利用CAA+RADE在VC++环境中对DELMIA软件进行二次开发,以改进维修可视性分析功能模块。[结果]在焊接工作站的维修可视性验证中,该方法能够对可视性进行有效评估,且可量化评估物体遮挡的情况。[结论]该改进方法能有效改善复杂设备维修中可视性分析的全面性和合理性。

[Objectives]Since the visual cone maintenance visibility analysis method based on the visual field of the human eye cannot quantitatively evaluate visibility and visual field occlusion,an improved visibility evaluation model is proposed.[Methods]First,the plane field vision model of the object is established according to the visual field cone of the human eye in order to determine its visual range.Combined with distance and volume of the object,the visual range is evaluated.Next,a line-of-sight model from the human eye to various parts of the object is built to judge the intersection of line-of-sight and other objects,and identify the shielding of the objects.Finally,the evaluation results are quantified.The improved maintenance visibility analysis function module is realized in DELMIA software by carrying out secondary development in a VC++environment with CAA+RADE.[Results]In the maintenance visibility verification of a welding workstation,the improved method can effectively evaluate visibility,quantify the evaluation results and quantitatively evaluate the occlusion of objects.[Conclusions]The improved method greatly improves the comprehensiveness and rationality of visibility analysis in complex equipment maintenance.