10-04-2017, 08:35 PM
Most of us are not concerned of the security of the homes until we experience a burglary or sort of incident. The primary aim of this project is to provide total security to the house. This system employs a microcontroler as its central part and day and night detection is also enebled. The security precautions include aser beam monitoring system for windows, and magnetic monitoring for doors. The alarm system included in the system notifies the owner if there has been an intrusion or an attempt to break into the system. a 7 segment display with a 4x3 keypad is the source of input and user output.
The 20pin At89c2051 microcontroller is the heart of the project. A 5 digit pin entered by the user activates or deactivates the door lock security. The # and the * key serves as the enter and the backspace keys respectively.
The day and night detection is implemented using a Light dependent resistor (LDR). digital input output logic and analog information process is thus utilised here. The the voltage obtained can be used as a measure of the light falling on the LDR. The ADC of the microcontroller has to be put to use for this purpose. With this the task of turning on and off of the light is taken up by the microcontroller.
Get the full details and the circuit diagram and other details here:
http://8051projectsdownloads232.html