Gsm Based Home Security System

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SMS BASED HOME SECURITY SYSTEM

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INTRODUCTION:

Security has been an important issue in the smart home applications. Conventional security systems keep homeowners, and their property, safe from intruders. A smart home security system, however, offers many more benefits. A smart home or building is a home or building, usually a new one that is equipped with special structured wiring to enable occupants to remotely control or program an array of automated home electronic devices by entering single command. For example, a homeowner on vacation can use a ouchtone phone to arm a home security system, control temperature gauges, switch appliances on or off, control lighting, program a home theater or entertainment system, and perform many other tasks. he !S" data collecting node module is connected with #ie$oelectric %nfrared &etector, emperature Sensor, Smoke &etector and 'as Sensor separately. !hen the #%( finds that some people intrudes into the house or when the temperature sensor detects too high indoor temperature or when the gas sensor detects leakage of gas, the data collecting node will send encoded alarm signal to the !S" center node through the wireless sensor network established in home. )nce the !S" center node receives alarm signal, it will send alarm short message to the users through the 'S* module and 'S* network immediately. Similarly the user can also control the various devices connected with device control unit through S*S. +sing ,io sensors to measure heart rate and blood pressure from human body this

method is using especially for old people. ,iosensor senses data and send to the owners or users mobile phone. %t will send alarm short message to the users through the 'S* module and 'S* network immediately.

HARDWARE USED
1. 2. 3. 4. . !.

-.S/0 *icrocontroller *ax 010 %C. 2oltage regulator 3-4/. &iode %"5443 'S* *odem. Some other components to produce interrupt.

SO"TWARE USED 1. #ei$ u%&i'i() 3.*
6eil Software is used provide you with software development tools for -4/7 based microcontrollers. !ith the 6eil tools, you can generate embedded applications for virtually every -4/7 derivative. supported microcontrollers are listed in the 89vision. he

2 +RO 1 +,(-,.mme, S(/t0.,e THEORY O" O+ERATION
%n this pro:ect we interfaced -4/7 microcontroller with sim9com 144 modem to decode the received message and do the required action. he protocol used for the communication between the two is A command. he microcontroller pulls the S*S received by phone, decodes it, recogni$es the *obile no. and then switches on the relays attached to its port to control the appliances. After successful operation, controller sends back the acknowledgement to the user;s mobile through S*S.

AN INTRODUCTION TO 1* 1 MICROCONTRO22ER:

!hen we have to learn about a new computer we have to familiari$e about the machine capability we are using, and we can do it by studying the internal hardware design <devices architecture=, and also to know about the si$e, number and the si$e of the registers. A microcontroller is a single chip that contains the processor <the C#+=, non9volatile memory for the program <()* or flash=, volatile memory for input and output <(A*=, a clock and an %>) control unit.

Also called a ?computer on a chip,? billions of microcontroller units <*C+s= are embedded each year in a myriad of products from toys to appliances to automobiles. For example, a single vehicle can use 34 or more microcontrollers. he following picture describes a general block diagram of microcontroller.

B2OC# DIA3RAM O" +RO4ECT

LPG Gas Sensor

SMS

PORT1

IR Sensor

'S* *)&@*

8051
RS-232 Fire Sensor

A++2ICATION
• 'S* ,AS@& A)*@ A##B%A"C@ C)" ()B • 'S* ,AS@& A" % A@F SCS @* F)( 2@A%CB@S

• 'S* ,AS@& '@"@(A )( S A( S )# A"& *A"C *)(@.

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