The invention relates to a railway vehicle bolt looseness detection method and
system. The railway vehicle bolt looseness detection method comprises the steps: S1, acquiring a plurality of railway vehicle key part images at bolts under different illumination conditions; S2,
cutting each image to a set size; carrying out manual marking on each image; S3, establishing and training a key part positioning network; S4, setting a
cutting layer; S5, establishing and training a bolt looseness detection network; and S6, performing image testing. The railway vehicle bolt looseness detection
system comprises a multispectral time-sharing
light source, an
image acquisition device, an
image processing module, a key part positioning network building and training module, a
cutting layer setting module, a bolt looseness detection network building and training module and a storage and test module. The railway vehicle bolt looseness detection method and
system can monitor the bolt state of a key part, can give the specific position information of the loose bolt, are high in the detection speed, can achieve real-time online detection, can improve the detection efficiency, and can improve the detection accuracy.