Patent ID: 7089151

Claim:
A method for predicting a macroslip on a walkway surface, comprising: determining and storing with an electronic processor a characteristic of a shoe-walkway surface interface, including determining the characteristic of the shoe-walkway surface interface in a heel strike condition and in a push-off condition; determining and storing with the electronic processor an anthropometric constant, including determining the Anthropometric Gait Index (AGI), or indices, for specific anthropometric groupings; determining and storing with the electronic processor a relationship between a walking speed and a stride length at which macroslip occurs in terms of the characteristic of the shoe-walkway surface interface and the anthropometric constant; and providing as an output of the electronic processor a plot of a nonlinear curve of the relationship between the walking speed and stride length in terms of the characteristic of the shoe-walkway surface interface and the anthropometric constant for at least one of the specific anthropometric groupings, wherein the macroslip is predicted to occur at a position on or above the nonlinear curve.