Temporary grounding wire defect diagnosis model construction method and device

The invention discloses a temporary ground wire defect diagnosis model construction method and device, and the method comprises the steps: taking a historical ultrasonic detection waveform as a sample waveform, and extracting the sample feature quantity of the sample waveform; initializing a model structure of a BP neural network according to the sample feature quantity in combination with the number of input feature quantities and the number of output results; through an improved CSO algorithm of a hierarchical ring topology structure, the weight and the threshold value of a BP neural network are optimized, the BP neural network is trained and tested according to the sample characteristic quantity, a trained temporary grounding wire defect detection model is obtained, and when defect detection of a temporary grounding wire is carried out, the defect detection accuracy of the temporary grounding wire is improved. By inputting a corresponding ultrasonic detection waveform into the defect diagnosis model, the d