The application relates to the technical field of control cabinets, in particular to a control cabinet remote intelligent diagnosis method and
system based on multi-
source data fusion, which comprises the following steps: acquiring a visible light image,
infrared thermal image data and loop current of a
target control cabinet; based on semantic analysis of the visible light image, a hidden node that is shielded is identified, a heat conduction agent area is locked and a central skeleton path is extracted; the heat conduction agent area is analyzed to determine a temperature rise
gain strategy, the
infrared thermal image data is compensated to generate corrected temperature rise data; a
temperature gradient vector of the
infrared thermal image data along the central skeleton path is calculated, and a heat source position feature is output based on the
directivity of the
temperature gradient vector relative to the hidden node; a theoretical heat production potential is generated based on the loop current, and a logic
interlocking criterion is constructed. The application can realize accurate reverse attribution of hidden contact faults under non-line-of-
sight conditions through multi-
modal logic decoupling.