Electronic Card Lock System

Abstract

This project is developed for the electronic card lock system is much simpler and cheaper. The circuit is configured around microcontroller PIC16F73. Any number in binary form, when available at input pins of the microcontroller makes corresponding output go logic high, thus turning on the appliance through relay contacts. Up to 15 appliances can be switched on/off. The card used should be of opaque plastic. It should be able to withstand some heat from the bulb, even though the appliance remains on only for the period for which the card is the slot. The card has a triangular notch that shows correct orientation/direction of insertion of card and prevents false operation. LDRs can be placed in a line, or randomly to increase security. The order in which holes should be punched for each appliance.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM