The invention relates to a multi-mode
large model and light-weight small model collaborative
road surface ice condensation
state prediction method, and belongs to the field of
road traffic safety monitoring and prediction. The method aims at solving the problem that real-time early warning and accurate prevention and control are difficult in the prior art. According to the invention, a multi-
modal data coding
system is constructed,
road surface monitoring images, meteorological
time sequence data and historical ice condensation text cases are integrated, and
feature fusion is realized by adopting visual-physical feature joint coding, meteorological
time sequence feature enhancement and text
semantic mining; a pseudo
label is generated through
large model zero sample reasoning, and a lightweight small model is trained through cross-
modal knowledge
distillation; and finally, on the basis of a dynamic trigger type double-model reasoning framework, calling a cloud
large model for fine judgment when the small model is low in confidence coefficient or high in scene complexity, and outputting the
icing starting moment and thickness through confidence coefficient weighted fusion. According to the method, the prediction accuracy and real-time performance are improved, the model generalization ability is enhanced, and reliable support is provided for
road traffic control in winter.