Height and motion property based comprehensive measuring method of pedestrian step length

Abstract

The invention provides a height and motion property based comprehensive measuring method of pedestrian step length. The method is on the basis of three factors, namely, different height, different walking frequency, and acceleration variance within each walking cycle; the vertical acceleration information of a human body is mainly utilized for step length measuring. The method comprises the following steps: acquiring the acceleration at the center of body weight when the human walks through an inertial measurement nit (IMU) worn at the waist of the human body; then calculating the walking frequency and the acceleration variance within each walking cycle according to the acceleration data; finally realizing the step length measuring through the relation between the walking frequency, the acceleration variance, the height and the step length. According to the method, the body properties and the motion properties of different people are comprehensively considered, so that the method has the characteristics of being high in reliability and accuracy, and is applicable to step length measuring and navigation positioning in indoor autonomous pedestrian navigation, and can be applied to the fields such as the gait analysis field, the exercise training field and the health monitoring field.

Description

technical field [0001] The invention relates to a comprehensive measurement method for pedestrian step length based on height and motion characteristics, which belongs to the field of inertial testing and can improve the calculation accuracy of pedestrian step length and the positioning accuracy of pedestrian navigation. It is suitable for step length measurement and navigation positioning in indoor autonomous pedestrian navigation, and can also be used in gait analysis, sports training and health monitoring and other fields. Background technique [0002] With the continuous development of urbanization and the continuous improvement of the construction level, there are more and more large and complex structures in the city, which will seriously block the satellite positioning signals, such as large shopping malls, libraries, airport terminals, large Supermarkets and underground parking lots, etc. When disasters such as fires and earthquakes occur in these complex indoor env...

AI Technical Summary

Problems solved by technology

Since this method ignores many influencing factors and integral calculations are involved in the measurement of geometric parameters, the error will increase and the measurement accuracy of the step size will decrease.

There are many calculation methods based on motion characteristics, but the existing methods ignore the factors related to the step size to varying degrees, and do not consider the differences between different pedestrians, so the step size measurement has poor adaptability and accuracy. Low

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