Judgment Method for Maintenance Accessibility Based on Human Visual Range in Virtual Environment

Visibility and accessibility are two key elements in the qualitative analysis of maintainability and cover most work of such qualitative analysis. At present, visibility and accessibility are analyzed by virtual maintenance technology, which greatly improves the efficiency of maintainability analysis. Generally, in the maintainability analysis based on virtual maintenance, in order to analyze the visibility and accessibility, different analysis tools are established based on human visual features and arm motion features, respectively, for independent analysis. However, in actual maintenance, visibility and accessibility are simultaneously required to better complete maintenance. Therefore, judging whether the object is accessible while it is visible is obviously more efficient than calling different tools to analyze visibility and accessibility, and can better fit engineering practices. In this paper, the quantitative correlation between the optimal human visual range and the maximum accessible range was established by introducing auxiliary objects in the virtual environment based on the basic physiological characteristics of human visibility and accessibility. Whether the object is accessible was judged while it was within the optimal human visual range on the basis of this quantitative correlation.