The invention provides a risk
early warning system for
rehabilitation nursing, a fatigue risk early warning method, equipment and a medium. The method comprises the following steps: synchronously acquiring a three-axis acceleration
signal and a surface electromyogram
signal of a target
muscle of a patient during
rehabilitation nursing; carrying out filtering
processing on the surface electromyographic signals according to
frequency spectrum characteristics of the three-axis acceleration signals so as to suppress artifacts generated by macroscopic movement of limbs, and obtaining preprocessed electromyographic signals; determining a median frequency sequence of the preprocessed electromyographic signals and an
approximate entropy sequence of amplitude envelope in a continuously
sliding time window; constructing a
risk index of the
muscle fatigue state according to a collaborative change relation between the median frequency sequence and the
approximate entropy sequence; and generating a fatigue risk early warning report of the patient during
rehabilitation nursing by combining the
risk index with a preset fatigue
risk threshold. By adopting the scheme of the invention, a normal physiological fatigue process and an abnormal neuromuscular
decompensation state can be discriminated.