Block Diagram for Project

This project contains 3 sections which is the hand phone, the GSM modem and the PIC16F877 microcontroller with the alarm circuit. The hand phone will communicate to the GSM modem in 2 way communication using mobile phone platform. This is including giving an instruction from mobile phone or receives information from the GSM modem. The GSM modem not only communicates to the mobile phone but also communicate to the microcontroller in 2 way communication. The GSM modem will give the instruction to the PIC after encrypted the instruction receives from mobile phone. The instruction is encrypted in binary or hexadecimal notation that can be understood by the microcontroller. At the same time, the microcontroller will provide information to be send to the owner through the GSM modem.

            

      The PIC microcontroller will control the whole operation to the system. It used to gain control to the alarm circuit and also receive detection from the sensor such as vibration sensor. The operation in the microcontroller is more to comparison data because the microcontrollers only do the job when there are inputs given to it and compare to the program that burner to it. Figure show the connection to each section of the system.