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jranaraki / steps

This application counts your steps based on accelerometer data and calculates travelled distance based on computed stride length using the user's demographic information
https://open-store.io/app/steps.jranaraki
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accelerometer stepcounter ubuntutouch

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Steps

This application counts steps based on accelerometer data and calculates travelled distance based on computed stride length [1-2] using the user's demographic information. Inspired by [3] and [4].

How it works

When a new accelerometer datapoint becomes available, it is fed into calMag function to calculate magnitude. Then, every one second, if at least 60 magnitude values are accumulated, the process of counting steps starts by calling countSteps. First, the average of the collected magnitudes is calculated and subtracted from each point. Then, the resulting values are compared with a constant value of eight, approximating the standard deviation of magnitude when walking. However, to have a more reliable result, an algorithm is required to detect walking and then calculate the standard deviation of the collected magnitudes over time.

Notes

For the app to work correctly, the app should be prevented from suspension by following these steps:

Test cases

The app has been tested on Nexus 6P, Pixel 3A, Poco F1, Sony Xperia X and PinePhone.

Limitation

The device should be in the pocket for the best accuracy.

Download

OpenStore

References

[1] Chung, S. Long Walk Shirley Chung AT Still University

[2] Barreira, T. V., Rowe, D., & Kang, M. (2010). Parameters of walking and jogging in healthy young adults. International Journal of Exercise Science, 3(1), 4-13

[3] Counting Steps by Capturing Acceleration Data from Your Mobile Device - MATLAB & Simulink. Retrieved March 18, 2022, from https://www.mathworks.com/help/matlabmobile_android/ug/counting-steps-by-capturing-acceleration-data.html.

[4] Clime, C. sensorsstatus. OpenStore. Retrieved March 18, 2022, from https://open-store.io/app/sensorsstatus.chrisclime.

[5] Usage and implementing of the User Metrics (alias Circle Message): https://docs.ubports.com/en/latest/appdev/guides/user-metrics.html

License

Copyright (C) 2023 Javad Rahimipour Anaraki

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 3, as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranties of MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.