home appliance control using pc
TRANSCRIPT
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HOME APPLIANCE CONTROL
USING PCBY
S.CALVIN
I.DILEEP VARMA
T.NIRMAL RAJ MANOHAR
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OUTLINE
INTRODUCTION
BLOCK DIAGRAM
FEATURES
REQUIREMENTS
CIRCUIT DESCRIPTION
CIRCUIT DIAGRAM
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INTRODUCTION
A home appliance control system (HACS) is a system which
provides various services to remotely operate on home
appliances or any industrial type area through remote
devices such as mobile phone, desktop and palm-top.
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BLOCKDIAGRAM
Micro Controller
Unit
Power supply
unitRelay 1
Serial driver
PC
Driving
Unit
Relay 2
Relay 3
Appliance 1
Appliance 2
Appliance 3
Relay 4 Appliance 4
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FEATURES
This project design makes use of 8051 micro controllers forinterfacing to various hardware interfaces.
To control the electrical loads from the PC end an AT
Keyboard is being used.
Control any home appliance or in any industrial type area.
Based on Embedded systems.
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REQUIREMENTS
HARDWARE USED :
Serial communication used for downloading the hex code.
Serial interfacing with PC.
Relay interface.
SOFTWARES USED :
A Cross compiler for compiling and linking the code written
for 8051.
Serial communication software for downloading code to8051.
Operating System: Windows 2000.
Application program development in Embedded C.
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MAJOR COMPONENTS
8-bit Microcontroller 8051 (AT89C51)
MAX 232
Relay Circuit
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APPLICATIONS
Hotel power management
Street light management
Home automation
High voltage grid control
Industrial automation
Electro,hydrolic and pneumatic valve control
Robotic control
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ADVANTAGES
User FriendlyThe project has simple and efficient
interface so that a person having elementary knowledge
about computers and only the introductory knowledge
about the system can use it. Easy Handling Once developed and put to work
properly then no further maintenance is required.
Machine Independent The project is totally machine
independent .Not any special packages or hardware is
required
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SCOPE FOR EXTENSION
This project can be made wireless also.
Transmitter and receiver can be used with sensors
attached at the hardware box and also at the application
devices so as to make the system wireless.
We can also use mobile phone & internet connection forenabling/disabling the electrical devices
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CONCLUSION
The control of different devices in the house interfaced to the micro
controller through PC which is serially interfaced to the micro
controller.
To control the electrical loads from the PC end an AT Keyboard is
being used. Different key presses are used to control various electrical loads fan,
bulb etc.
As soon as we press a key on the keyboard, it generates a signal, and
that signal is received by the micro controller via serial interface RS
232 cable. Hence a single key press on the keyboard is sufficient for controlling
the any domestic appliances