ZONE BASED HOME SECURITY SYSTEM
A microcontroller (ATMEGA16) based home security system.
The prototype we made
have the following features:
o Multi
- zone security: The entire area is divided into
different zones with customizable security levels and individual monitoring.
The prototype comes with a three zone detections and a two level security for
each.
o Customizable
security levels:
Each zone security level can be individually customized. A two level security
is made available in the prototype
o User
Defined Password:
Once activated, the system can be deactivated only upon the entry of the
correct password. User can easily change the password using the keypad
o Fire
alarm: Constant
temperature monitoring which triggers a
fire alarm and motor at excess temperature levels
o User
friendly LCD interface and 4*4 keypad: The prototype comes with a 4*4 keypad and an LCD
interface which can be used to change the password, change security levels etc.
o Screensaver featuring current system status
and current temperature
o Multi LED display to indicate the current status of the system, zone security status and excessive temperature levels
Security breach is detected using
IR-Photodiode (Tx-Rx) pair . A drop in light intensity on the receiver would
trigger the alarm system. The detailed circuit diagram is given in the later
section.
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| Block diagram |
