51 lines
2.1 KiB
Markdown
51 lines
2.1 KiB
Markdown
OpenSeizureDetector - Pebble Version
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====================================
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This seizure detector uses a (Pebble)[http://getpebble.com] smart watch.
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The watch has an accelerometer and vibrator motor and a bluetooth radio
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to talk to another computer. Most importantly, it comes with instructions to
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write code for it on the manufacturers (web site)[http://developer.getpebble.com].
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So it sounds like an ideal platform for an accelerometer based seizure detector
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similar to the Arduino based one I made in 2013.
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Principle of Operation
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======================
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It is based on an accelerometer monitoring movement. It uses a fourier
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transform to extract the frequency spectrum of the movement, and monitors
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movements in a given frequency band. The idea is that it will detect the
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rhythmic movements associated with a seizure, but not normal day to day
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activities.
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If the acceleration within the given frequency band is more than a
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threshod value, it starts a timer. If the acceleration remains above
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the threshold for a given period, it issues a warning beep.
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If it remains above the threshold for a longer specified period, the unit
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alarms (continuous tone rather than beep).
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Licence
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=======
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My code is licenced under the GNU Public Licence - for associated libraries
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please see Credits below.
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Credits
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=======
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The following libraries are used:
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* (SYLT-FFT)[https://github.com/stg/SYLT-FFT] by D. Taylor.
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* (NanoHTTPD)[https://github.com/NanoHttpd/nanohttpd]
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* (jQuery)[http://jquery.org]
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* (jBeep)[http://www.ultraduz.com.br]
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* (Chartjs)[http://www.chartjs.org]
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* (MPAndroidChart)[https://github.com/PhilJay/MPAndroidChart]
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Logo based on ["Star of life2" by Verdy p - Own work. Licensed under Public Domain via Wikimedia Commons](http://commons.wikimedia.org/wiki/File:Star_of_life2.svg#mediaviewer/File:Star_of_life2.svg).
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Other icons crated using http://romannurik.github.io/AndroidAssetStudio.
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Audio Alarm sounds from freesound https://freesound.org/people/coltonmanz/sounds/381382/, https://freesound.org/people/NoiseCollector/sounds/4270/, https://freesound.org/people/pistak23/sounds/271632/
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Graham Jones, 03 December 2017. (grahamjones139+sd@gmail.com)
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