ABSTRACT

The security of our homes and properties are of utmost importance as various individuals and engineers have worked on ways to improve the security of our homes. This project which is "Development of a door lock security system based on speech recognition" is aimed at introducing maximum security and assurance to individuals and their properties in their various homes. This project was developed based on the use of the MATLAB software, which is progra1runed to recognize certain users and give a particular user (amongst the recognized users) control over the access to home for security purpose. In the training, MFCC feature extraction technique was used for extraction of appropriate features from the user's speech signal. Vector Quantization using LBG algorithm (VQLBG) was also employed in the recognition phase of the speaker recognition system. This project was finally implemented/tested using a model home entrance door to show its reliability and efficiency. Other components such as DC motor, for movement of the door ( open and close), H-bridge motor controller (L293D), for the directional control of the DC motor, PIC18FlX20 microcontroller and a display LCD, were used on the model house door to accomplish this project.