This invention discloses a
deep learning-based method and
system for determining the state of surface
electromyography (EMG) signals, relating to the field of
signal processing technology. The method includes the following steps: S1, generating a multi-channel
signal matrix sequence; S2, outputting a dynamic spatial
adjacency matrix; S3, by improving the RGCN model, dividing neighbor features based on relation indices, triggering weight competition to rearrange and solidify the block
diagonal submatrices through index perturbation, and then relying on its exclusive shielding projection to block gradient
backpropagation of dissimilar relations, finally aggregating the isolated projection and its own features to output a spatial feature map sequence; S4, outputting a spatiotemporal joint temporal feature
tensor; S5, outputting a discriminative
feature vector; S6, outputting a probability distribution vector; S7, outputting the state discrimination result. This invention overcomes the limitations of traditional methods, such as
static mapping distortion, single feature channel recalibration, and
neglect of temporal dynamic constraints, providing an efficient solution for the accurate decoding of continuous non-stationary EMG signals.