49 lines
1.9 KiB
Markdown
49 lines
1.9 KiB
Markdown
OpenSeizureDetector - Pebble Version
|
|
====================================
|
|
|
|
This seizure detector uses a (Pebble)[http://getpebble.com] smart watch.
|
|
The watch has an accelerometer and vibrator motor and a bluetooth radio
|
|
to talk to another computer. Most importantly, it comes with instructions to
|
|
write code for it on the manufacturers (web site)[http://developer.getpebble.com].
|
|
|
|
So it sounds like an ideal platform for an accelerometer based seizure detector
|
|
similar to the Arduino based one I made in 2013.
|
|
|
|
Principle of Operation
|
|
======================
|
|
It is based on an accelerometer monitoring movement. It uses a fourier
|
|
transform to extract the frequency spectrum of the movement, and monitors
|
|
movements in a given frequency band. The idea is that it will detect the
|
|
rhythmic movements associated with a seizure, but not normal day to day
|
|
activities.
|
|
|
|
If the acceleration within the given frequency band is more than a
|
|
threshod value, it starts a timer. If the acceleration remains above
|
|
the threshold for a given period, it issues a warning beep.
|
|
If it remains above the threshold for a longer specified period, the unit
|
|
alarms (continuous tone rather than beep).
|
|
|
|
|
|
Licence
|
|
=======
|
|
My code is licenced under the GNU Public Licence - for associated libraries
|
|
please see Credits below.
|
|
|
|
Credits
|
|
=======
|
|
The following libraries are used:
|
|
* (SYLT-FFT)[https://github.com/stg/SYLT-FFT] by D. Taylor.
|
|
* (NanoHTTPD)[https://github.com/NanoHttpd/nanohttpd]
|
|
* (jQuery)[http://jquery.org]
|
|
* (jBeep)[http://www.ultraduz.com.br]
|
|
* (Chartjs)[http://www.chartjs.org]
|
|
* (MPAndroidChart)[https://github.com/PhilJay/MPAndroidChart]
|
|
|
|
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).
|
|
|
|
Other icons crated using http://romannurik.github.io/AndroidAssetStudio.
|
|
|
|
|
|
|
|
Graham Jones, 01 March 2015. (grahamjones139+sd@gmail.com)
|