Password Based Load Control System

Password Based Load Control System

Password Based Load Control

Nowadays, electrical accidents to the line man are increasing, while repairing the electrical lines due to miscommunication between the maintenance staff & the electric substation staff. During the electrical fault or short circuit, the power network will suffer from a high stress of fault current in them which may harm the equipment permanently.

To overcome this problem, we introduces password based load control system which is arranged in such a way that maintenance staff or line man has to enter the password to ON/OFF the electrical line. Separate passwords are allocated for every electrical line that access by authorized person only. Now, if there is any mistake in the electrical line then the line man will switch off the power supply to the line by entering password and comfortably repair the electrical line.

Block diagram:

The main component in the circuit is 8051 microcontroller. A 4×4 matrix keypad is used to enter the password. The password which is entered is compared with the predefined password stored in ROM of microcontroller. If entered password is correct, then the corresponding electrical line is turned ON or OFF and display line or load status on LCD. If the password is wrong, then display “wrong password” on the LCD.

In this project a separate password is provided to each electrical line. Activation and deactivation of the line (circuit breaker) is indicated by the load (Light Bulbs).

Hardware requirements:

·       8051 microcontroller

·       keypad

·       Voltage regulator

·       LCD

·       Power supply

·       Relay driver

·       Relays

·       Lamps

Software requirements:

•           MC Programming Language: Embedded C
•           Keil version IDE
•           Proteus For Circuit & PCB Design

Android Password Based Remote Door Opener System Project

Android Based Password Door Open System

Our project aims at remote password based door opener system through an android application. The system tends to make a secure door opening mechanism such that the door only unlocks when a security personnel opens it by entering the right password through an android application. The authorised person needs to be present within Bluetooth range of the door but need not open the door manually. He just needs to enter the right password through his android application in order to unlock the door. This is a useful concept in places where the security needs to open gates quite usually or need to operate a door from a vehicle without needing to get down from it.

      The command sending functionality is achieved through an android application.   The application provides an interactive user friendly GUI for this purpose. The android application can be operated from any device running on android OS and uses Bluetooth as a medium for sending commands.

As soon as commands are sent through the android device a Bluetooth receiver is used to receive those commands. These commands are then sent to the 8051 micro-controller. The micro-controller processes these commands and then tallies the password to check its correctness. If the right password is encountered it sends command to open the door.

Block Diagram:-

Hardware specifications:-

·      8051 series Microcontroller

·      Resistors & crystal

·      Capacitors

·      Diodes & Transformer

·      Voltage regulator

·      Motor Driver IC

·      DC Motor with sliding mechanism

·      Bluetooth Device

Software specifications

         ·      MC programming language: Embedded c

        ·      Keil studio µ version

Click Here to Download Data Of  Bluetooth Android Based Password Door Open System Project