Im developing an epilepsy shock detector, for a university project, and i want to know what sensor i could use to detect the movement. The epilepsy is a standart movement in legs & arms, so when the arduino detect the constant movement, an alarm start. (The project is focused to little childrens that had shock epilepsy in the night and the parents didnt know). How can I do it? Some ideas? what type of sensor i could use? My teacher told me to use bitalino´s sensors conected to arduino one..
Maybe an accelerometer could do the job.
Maybe tilt sensors (just on/off) is enough in detecting a longer period of extensive movement.
Accelerometers might be better, they give at least far more info.
Did you also consider using a microphone? At night the movement might make detectable and distinguishable sound or noise.
why not use the BITakino ?
Is this for a single patient, or a generic sensor for a variety of patients? (Yes I read the OP) In my experience, not all seizures have muscle twitches, some have slow movements, some are random directions, and some have the stereotypical fast repeated movements. The standard detection is to monitor brain waves through an EEG (which I believe an arduino is capable of?) and watch for particular changes in the waves.
If you have a patient with a known type of seizure, then monitoring their heart and breathing rates would probably be a good indicator for seizure activity. Use one of the PulseOximetry sensor modules available, and when the rates fall or rise to a certain threshold (Seizures can paralyze/seize the intercostal muscles and the diaphragm, preventing ventilation), you have a possible seizure. A couple nights of calibration would be required to identify REM and non REM sleep patterns.