Step counting method according to step credibility estimation

The invention discloses a step counting method according to step credibility estimation. According to the method, vertical acceleration data and forward acceleration data are subjected to step credibility estimationby two times; in the first-time estimation, approximate standard deviations of the two-axis data are calculated, and a part of static or tiny movement gaits are filtered out according to the sizes of the approximate standard deviations; in the second-time estimation, a high threshold and a low threshold in each time window are calculated, and the time windows with credible steps arediscriminated according to differences between the high thresholds and the low thresholds; and vertical acceleration data points are traversed in the condition-meeting time windows, and step-changingtime points are detected according to comparison between the vertical acceleration data points and the low thresholds and between the vertical acceleration data points and intermediate thresholds. The method is high in precis