24-10-2016, 02:13 PM
1460808480-485Abstract.doc (Size: 53.5 KB / Downloads: 5)
ABSTRACT-
The main objective of this project is to lift a garage door by using a cell phone and avoiding the conventional method involving human labor for closing and opening the garage doors. In this proposed system, an owner can call to a mobile phone interfaced to the system which in turn is connected to the garage door that can open/close the door by entering a unique password. This method is very convenient as one doesn’t have to get down of his car to open or close the door physically.
This project is based on the concept of DTMF (dual tone multi - frequency). Every numeric button on the keypad of the mobile phone generates a unique frequency when pressed. These frequencies are decoded by the DTMF decoder IC at the receiving end, which is fed to the microcontroller. If this decoded values (password entered by the user) match with the password stored in the microcontroller, then the microcontroller initiates a mechanism to open or close the door through the motor driver interface.
Furthermore, this project can be incorporated with an EEPROM, i.e., a non-volatile memory so that the password can be changed by the owner.
HARDWARE REQUIREMENTS:
8051 series Microcontroller, DTMF Decoder, Resistors, crystal, Capacitors, Diodes, Transformer, Voltage regulator, Motor Driver IC, DC Motor with sliding mechanism.
SOFTWARE REQUIREMENTS:
Keil compiler
Language: Embedded C or Assembly.