H.R.D.A. System (Heart Rate Detector Alarm System)
Holerga Flavius Adrian
Journal of E-Technology, Vol. 9, No. 1, 2018.
DOI: 
Link: http://www.dline.info/jet/fulltext/v9n1/jetv9n1_2.pdf
Abstract:
The H.R.D.A. System is a bracelet designed to detect the pulse of a person with a cardiac condition, who doesnâ€™t benefit of permanent medical assistance, but is monitorized by at least another person, be it from the family
or from a social program. This device is connected via bluetooth to the userâ€™s mobile phone and communicates with
it through an app made using â€œEclipseâ€ which was created with the aid of the programming language â€œJavaâ€. The
application receives the data captured by the proximity sensor from within the bracelet and if the pulse is either too
high or too low, a warning message is sent to a phone number which is initially set by the user when the application is
first installed on the phone.