An automatic door lock was designed and fabricated using locally available semiconductor devices, such as 8051 architecture microcontroller, 1-channel type optocouplers, voltage regulators, junction diodes, light emitting diodes, comparators, timers and resistors. It operates such that, access is gained by inputting the correct Personal Identification Number (PIN). The PIN input is achieved by pressing the buttons on the keypad. The keypad is positioned outside the secured room such that access PIN is only needed on entrance. On exit, a simpler circuit is in place to allow free passage without rigorous verification. The system consists of the Electronic Logic Section and the Mechanical Section. The Electronic Logic section consists of the Power Supply Unit, the User Input Unit, the Arithmetic & Logic Unit and an Output Interface Unit. The mechanical section consists of the Rotational to Translational motion Unit and the Lock Notch Restorer Unit. All these sections were coupled together for accurate operation and efficient performance. The door lock possesses some intelligent features that give an enhanced security with an ability to monitor motion in its environment and provide necessary reaction to such motions. This door lock is designed to operate on rechargeable batteries. The door lock is interactive which makes it user friendly and easy to use. It does not require rewiring to enjoy its full benefits.
PAPER TITLE :DESIGN AND FABRICATION OF AN ELECTRONIC DOOR LOCK WITH EXTERNAL SURVEILLANCE FACILITY
JOURNAL Of SUSTAINABLE TECHNOLOGY | VOLUME 3 NUMBER 1 2012
Paper Details
- Author(s) : ADEDAYO, K.D. and OSHAKUADE, O.M
- Abstract:
