Pedometer

Abstract

The invention discloses a pedometer. The pedometer comprises: a gathering module for gathering the triaxial acceleration of swinging of an arm according to a preset sampling frequency; a processing module for carrying out smoothing processing on the reference acceleration of the triaxial acceleration within a preset acquisition duration to obtain a processed acceleration; a first acquisition module for acquiring an effective characteristic acceleration from the processed acceleration; a recording module for recording the time position of the effective characteristic acceleration; a determination module for determining a first time window adopting the time position of a target characteristic acceleration as a center; a calculating module for calculating the similarity of processed acceleration wave shapes in the first time window and a second time window; a first judging module for judging whether the acceleration is periodic or not according to the similarity; and a step counting module for determining the duration of the first time window as a gait period when the acceleration is periodic and carrying out step counting on the processed acceleration according to the gait period in order to obtain effective steps. The pedometer can reduce the false counting or miss counting in the step counting process, and improves the step counting accuracy.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a pedometer. Background technique [0002] With the development of modern technology and the improvement of people's living standards, smart wearable devices have gradually developed in China and began to extend to various fields. At present, most smart wearable devices are equipped with pedometers, which can count the steps of people's walking or running status. Most of the existing pedometers detect the acceleration signal of the wearer's wrist through the acceleration sensor, and then use the peak and valley values ​​of the acceleration signal to count the steps of the wearer. Due to the complex and changeable arm swing movements of the wearer during daily walking, and the differences in the arm swing movements of different wearers, coupled with the interference of noise, in most cases, the segmentation of a complete gait cycle will not be obvious. Therefore, step counti...

AI Technical Summary

Problems solved by technology

Due to the complex and changeable arm swing movements of the wearer during daily walking, and the differences in the arm swing movements of different wearers, coupled with the interference of noise, in most cases, the segmentation of a complete gait cycle will not be obvious

Therefore, step counting is performed by relying on the peak-to-valley value of the combined acceleration signal, which is prone to miscalculation or omission.

Visible, there is bigger error in existing pedometer

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