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Step counting method based on three-axis gyroscope

A gyroscope and pedometer technology, applied in the field of measurement technology and sensor data processing, can solve problems such as limited pedometer algorithm and result interference.

Inactive Publication Date: 2017-12-01
河南卓凯软件科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: for indoor or without GPS signal situation, step counting algorithm is limited, and GPS precision has relatively big problem to the interference of result simultaneously, the present invention provides a kind of step counting method based on three-axis gyroscope

Method used

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  • Step counting method based on three-axis gyroscope

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Embodiment 1

[0040] A step counting method based on a three-axis gyroscope,

[0041] Step 1: Collect the three-axis data of the gyroscope and calculate the acceleration;

[0042] The "three axes" in the three-axis gyroscope are X-axis, Y-axis and Z-axis;

[0043] Step 2: pass the acceleration in step 1 through a low-pass filter to obtain a sinusoidal trajectory;

[0044] The low-pass filter selects a 3Hz cut-off frequency. The average range of human beings walking fast is 2.5 steps per second. The lower the cut-off frequency, the better the effect on the smooth waveform, and the glitch near the zero point can be filtered to the minimum, and the gait cycle can be clearly displayed. waveform.

[0045] Step 3: Perform peak detection according to the sinusoidal trajectory in step 2 to obtain pace data;

[0046] Peak detection in step 3 includes the following steps:

[0047] Step 3.1: Obtain the current acceleration direction and the last acceleration direction according to the sinusoidal c...

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Abstract

The invention provides a step counting method based on a three-axis gyroscope and relates to measuring technology and sensor data processing technology. The step counting method includes following steps: 1), collecting three-axis data of the gyroscope, and calculating acceleration; 2), acquiring sine curve path from the acceleration in the step 1 through low-pass filter; 3), performing peak value detection according to sine curve path in the step 2 to acquire pace data; 4), subjecting the pace data to verification zero-cross detection to judge whether step data judging conditions are met not; 5), if yes, performing zero-point detection according to the sine curve path in the step 2 to acquire step data, and if not, returning to the step 1. The step counting method can overcome influence of sensor vibrating and shaking, does not aim at specific person or state and can realize self-adaptive adjustment according to movement modes of different people and movement modes of a same person in different states so as to realize accurate step counting.

Description

technical field [0001] The present invention relates to measurement technology and sensor data processing technology, specifically, the present invention relates to a kind of step counting method based on three-axis gyroscope. Background technique [0002] With the improvement of the quality of modern life, more and more people begin to pay attention to their daily health exercises. As a monitoring method for effectively recording and monitoring exercise, step counting has been widely used in the application of mobile terminals. However, most of the current implementations use GPS signals to measure the movement distance and reverse the number of steps taken. It is effective but cannot work indoors or on devices without GPS signals. At the same time, GPS accuracy interferes a lot with the results. This paper proposes a new method. The step measurement method, which uses the three-axis gyroscope on the device to calculate the number of steps, can also work normally on devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C22/00
CPCG01C22/006
Inventor 肖雷
Owner 河南卓凯软件科技有限公司
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