How to automatically inspect bus wheel screw nuts?
Attach direction devices to the bus wheel screw nuts, and then use a 3 level artificial intelligence: wheel detection, screw nut direction device detection and screw nut angles.
Images and labels of screw nut direction device: d-DIP.
Images and labels of screw nut angles: d-angle.
The following figure illustrates the application of artificial intelligence in 3 levels to verify screw nuts.