Design and construction of mobile phone based automatic security door locking system

Abstract

This project will basically focus on the use of mobile phones to control the security locking system . The basic concept of the project is to detect a particular ringtone from a SIM supporting modem and use it to toggle the electronic circuit and the load (door lock) correspondingly. The very specific and unique ringtone – “Beep Once” or the “No Tone” is available with every NOKIA cell phone. And also this ring can be assigned to any particular fed number of the cell phone. So this ringtone becomes specific only to that particular number and will be sounded every time a call is received from the assigned number. This facility has been ideally exploited here.