Pace counting system and pace counting method based on three-axis acceleration sensor

Abstract

The invention discloses a pace counting system and a pace counting method based on a three-axis acceleration sensor and belongs to the technical field of electronic application. The pace counting method includes acquiring three-axis accelerated speeds through the three-axis acceleration sensor, smoothing and denoising to obtain a resultant acceleration speed, obtaining a maximum value and a minimum value of the resultant acceleration speed as well as corresponding three-axis acceleration data within every time length, taking the three-axis acceleration data as three-dimensional vector coordinates to obtain a vectorial angle of two points, comparing the vectorial angle with common people walking single pace time length and stride, and changing pace-counting walking single pace acquisition time length and stride to judge an angle according to deviations. The pace counting system and the pace counting method based on the three-axis acceleration sensor have the advantages that according to dual judgments of resultant acceleration speed peak detection and resultant acceleration speed vectorial angle detection within single-pace time length, every single discontinuous pace can be recorded, and the system and the method can conform to characteristic adjustment parameters of different walkers in a continuous walking process, so that accuracy in pace counting is achieved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a step counting system and a step counting method. Background technique [0002] With the development of society, people pay more and more attention to their health. Real-time detection of step count can help people grasp the exercise situation in real time and urge them to develop healthy living habits. [0003] Smart devices such as smartphones have become ubiquitous. The utility model has the advantages of convenient portability, fast response speed and convenient wireless communication. It has become an ideal choice to realize the step counting function through the three-axis acceleration sensor carried by the smart device, and the user has higher and higher requirements for the accuracy of the step counting function. [0004] At present, the step counting methods adopted by most pedometers or step counting software are peak detection and threshold detection. The peak ...

AI Technical Summary

Problems solved by technology

Due to the complex and changeable movements of the wearer, and there are great differences in movements, coupled with the influence of noise interference, a large error is caused to the step counting results

Specific problems include: 1. Small movements such as wrist rotation and body vibration will cause the detection of peaks and valleys to succeed; 2. Vigorous movements such as vertical jumping and squatting will cross the threshold

This will result in a clear false positive

Images