Fault diagnosis method and device based on convolution

The embodiment of the invention discloses a fault diagnosis method and device based on convolution. According to the technical scheme provided by the embodiment of the invention, the activation function and the attenuation function are constructed by obtaining the fault intensity data of the platform door equipment; performing convolution operation on the activation function and the attenuation function to obtain a first fault strength-time function; performing data processing on the first fault strength-time function, and determining a function parameter value; obtaining a second fault strength-time function according to the determined function parameter value; performing data processing according to the second fault intensity-time function to obtain image data of fault intensity and time; analyzing and processing the image data of the fault intensity and the time to obtain a fault intensity threshold value of the platform door equipment; when the fault intensity of the platform door equipment is larger than