Development of technique for checking insulation distance for large-scale CAD data using voxel meshes

Conventionally, designers of electronic equipment structures visually inspect the insulation distance or check it by using CAD software functions. However, unintentionally failed detection and overdetection of objects being inspected can cause problems. Therefore, we are developing a technique for checking the insulation distance. The technique calculates the insulation distance by using voxels, which are in orthogonal meshes. The inputs of this technique involve checking conditions such as the clearance distance threshold and creepage distance threshold, setting part attributes such as of insulation and conduction, and calculating parameters such as voxel sizes. The output of this technique is the visualization of violating parts and paths detected by calculating the insulation distance and generating a distance map. We confirmed that our technique can measure the clearance and creepage distances, detect violation parts, and reduce overdetection of a model for inspection.