A New Approach to Smart Knock Detection Based Security System for Door Lock

Security has always been a major concern in our day-to-day life. Locks are a part of it whether it is the main door lock, interconnecting door lock, bathroom door lock, furniture lock, baggage lock, shutter and grill door lock, etc. Here, we have proposed a smart door lock based on knock pattern detection to unlock the door. The project is based on custom-made Arduino whose sole purpose is cost cutting of the end product and the algorithm for knock pattern detection is written using the Arduino programming environment. We have included a reset button along with two statuses LEDs that are very useful for the testing of the project and registering new knocks. When the user knocks, custom Arduino board matches the knock pattern with the knocking algorithm and unlocks the door if the knock pattern matches with the pattern detecting algorithm and the user can open the door; else, it sends a notification to the owner warning about the intrusion.