Smart door lock using rhythmic knocks

Irfan, Nurul Natasha (2024) Smart door lock using rhythmic knocks. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

Text (Full Text) Smart door lock using rhythmic knocks.pdf - Submitted Version Download (4MB)

Abstract

The advancement of technology has introduced innovative methods for unlocking doors, aiming to provide enhanced security and convenience. This project focuses on a smart door lock system that uses rhythmic knocks as a unique biometric authentication method. Traditional methods like key-based or card-based systems have limitations in terms of security and convenience. Biometric solutions such as fingerprint recognition and face recognition have gained popularity, but their widespread adoption is hindered by infrastructure requirements. In this project, the feasibility and effectiveness of using rhythmic knocks as a biometric modality for door unlocking are explored. The system allows users to select a secret rhythm pattern based on their preferences. The motor of the lock is activated when the knock sequence matches the pre-defined secret pattern. The circuit sensitivity is optimized to consider factors like sound intensity and distance. The stability of the vibration signature, used as the biometric identifier, is evaluated over extended periods, proving its reliability as a unique authentication method. The proposed smart door lock system offers a dual-layered security approach, combining rhythmic knock authentication with traditional methods. This integration enhances the overall security level of the system. The project's implementation includes vibration sensors, an Arduino Uno microcontroller and LEDs. Through experimentation and analysis, it has been demonstrated that rhythmic knocks can be an effective and stable biometric modality for smart door lock systems. The uniqueness and stability of the vibration signature, coupled with its ease of use, make it a promising approach for secure door access. The project provides insights into the development of reliable and convenient smart door lock solutions, contributing to the evolution of advanced security systems.

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