Touch
Screen based wireless smart Home
Automation System
Technical Specification:
Title of the project : Touch Screen based wireless smart Home
Automation System
Domain : Embedded System Design
Software : C, Keil, Proload
Microcontroller : ARM7 TDMI based LPC 2148 MCU ,AT89S52
Power Supply : +5V,
500mA Regulated Power Supply
Touch Screen : 1
Wireless Device : RF Module (TX, Rx)/Zigbee Technology
Transmitter : STT
– 433MHz
Receiver : STR
– 433MHz
EEPROM : 24C04
Applications : Industries,
Process Control
Crystal : 12 MHz , 11.0592MHz
Touch Screen based wireless smart
Home Automation System
Abstract:
In
this present era everything is Automized right from home to industrial area. A home automation system
integrates electrical devices in a house with each other, in this
competitive world and busy schedule human cannot spare time to perform his
daily activities manually. The most common thing that he needs to do are switching
ON/ OFF the loads without much human involvement wherever they are required by
using wireless devices to control different appliances.
The
theme of this project is to control different loads using wireless technology.
One such implementation is home Automation using touch screen. By touching
digits in it various appliances can be controlled automatically. This can be
done by using RF modules.
The
RF modules used here are STT-433 MHz Transmitter, STR-433 MHz Receiver, HT12E
RF Encoder and HT12D RF Decoder. The three switches are interfaced to the RF
transmitter through RF Encoder. The encoder continuously reads the status of
the switches, passes the data to the RF transmitter and the transmitter
transmits the data.
A touch screen is used control different loads.The project is built around
the AT89S52 micro controller. This micro controller provides all the
functionality of wireless control. An EEPROM is provided to store the
status of current load which is being used and retrieve the data in some power
failure applications.
This
project uses regulated 5V, 1A power supply. 7805 three terminal voltage
regulator is used for voltage regulation. Bridge type full wave rectifier is
used to rectify the ac output of secondary of 230/12V step down transformer.
BLOCK DIAGRAM:
Applications:
·
Devices can be operated remotely.
·
Applied in Home,Industries,Hotels,Shopping malls, Process
control systems
·
Home Automation may include centralized control
of lights, HVAC Systems, security, comfort etc
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