METHOD OF DETECTING DRIVING FATIGUE ON BASIS OF BRAIN FUNCTION NETWORK CONSTRUCTED USING PHASE LOCKING VALUE

摘要

Provided is a method of detecting driving fatigue on the basis of a brain function network constructed using a phase locking value, belonging to the field of driving fatigue detection; electroencephalogram signals are collected during driving in an awake time and a test time, and said signals are de-noised, decomposed, and reconstructed; then the phase locking value (PLV) within the awake time and the test time series for every two channels is calculated, and, according to the PLV, the functional connection matrix of the channels in the awake time and test time series is formed; a connection strength threshold is set and compared with each element value in the functional connection matrix so as to obtain a connection relationship between the channels in the awake time and the test time series and form a brain function network of the test subject during the awake time and the test time series; the differences between brain function network topology in three sub-bands between the awake time and the test time series are compared and analyzed to determine whether the test subject is in a state of driving fatigue during the test time series; the reliability and accuracy of detection are relatively high.