Enormous number of people die due to lack of medical aid at the appropriate time as in therti case of road accident in the remote areas , sudden imbalances in a person living alone in his house or heart attacks in the nights.
In such cases , the whole accident may go unnoticed and by the time it is discovered, it may have been too late . We suggest a slight modification in the existing cellular system , which can help in attending to such situations immediately.
Whenever a human body is affected , physically or mentally , there is a change in the pulse rate . In the case of serious problems , there is a drastic change in the pulse rate . In the system designed by us , we sense this change and compare it with normal level to arrive at conclusion .
An abnormality detector with a short range transmitter (SRT) is attached to the wrist watch of the user . Abnormality detector periodically keeps track of the pulse .Whenever there is abnormal change , it activates the SRT which then sends signal to the short range receiver (SRR) incorporated in the cell phone . Then cell phone sends help signal to the Mobile Telephone Switching Office ( MTSO ) . The cell phone is then located by Tri – Circle method using the received signal's strength by a base station and two towers in a cell site and medical assistance is sent.
The cell phone is also made to ring an alarm which can help the medical team to reach the location with ease. Thus invaluable human lives can be saved .A notable advantage of this system is that even though the cell phone is switched off , SRR switches it on using the Squelch circuit .Hence , the system works even when the cell phone is turned off.