Smart Home Security Gate System Based Arduino Uno

Abstract

Today’s home safety has become a challenge due to advanced techniques used by burglars. To offer complete security solution to lives and properties at home, schools, offices, etc., in this research paper, a smart gate lock security system-based Arduino Uno with DTMF (Dual Tone Multi Frequency) polyphonic tone sensor has been developed and simulated in Proteus platform. The keypad unit is used to enter the password whereas an LCD (Liquid Crystal Display) for visual information display. After a password has been entered, the system compares it with the stored password for a match. If there is a match ‘Access Granted’ is displayed on the LCD and the gate will be unlocked but after being in idle state for five seconds, the gate will be automatically locked again (protection system). If there is no match in the password, ‘Access Denied’ is displayed on the LCD and the gate remains closed. If wrong passwords have been entered three times in the row, the alarm system will be triggered to alert people around. For more safety, a CCD (Charge-Coupled-Device) Camera will take the photos of visitors regardless the entered password status. To reset the password, the ‘###’ button is entered followed by the ‘reset key’ known by the system’s owner. If the reset key is confirmed, the system’s owner will enter twice the new password. The system has recorded 100% success rate (SR) in granting access for registered users and 100% failure rate (FR) for non-registered users. Finally, the system has also been 100% successful for password reset.