SMART HOME SECURITY SYSTEM (Design of Magnetic Switch Sensor and Phone Dialer)

The report is written to present the work done on the Final Year Project entitled
"Home Security System: The Design of Microcontroller Based Automatic Phone Dialer
and Magnetic Switch Sensor Circuit". This project aim is to design a system that can
monitor home security whenever the owner is away from the house.
This project focuses on designing the circuitry for the magnetic switch sensor and
the automatic phone dialer as well as fiirther integrating the two designs for
implementation of a complete home security system. The input of the automatic phone
dialer comes from the output of the magnetic switch sensor. When there is an intrusion,
the output voltage of the sensor rises. The microcontroller which is embedded in the
automatic phone dialer circuit acts as the brain for the dialing purposes.
The microcontroller is programmed to work such as by using the special language
called 'C programming'. This language interprets whatever the data being inputted to the
microcontroller to binary numbers so that the microcontroller can perform the command
programmed by the programmer.
In order to successfully implement this project, researches on the topic selected and
feasibility studies were carried out. Any problem regarding the project is identified before
the conceptual design. With the concept clarified, the model construction is done
followed by experimentation and programming the source code. After a numerous testing
and troubleshooting, a complete prototype ofthe whole system is finally designed.