PRESENTATION ONPRESENTATION ONAUTOMATION USING MOBILE

DEVICESubmitted by :- Submitted by :- Submitted to:-Submitted to:-Bijender(1507248) Mr. Bijender(1507248) Mr. JagtarJagtarVarun(1507254) Mr. Varun(1507254) Mr. Ajay JaswalAjay JaswalVandana(1507263) Vandana(1507263) Miss. Rajni Miss. Rajni

Electronics and Communication Electronics and Communication DepartmentDepartment

N.C. COLLEGE OF ENGINEERING, ISRANA (PANIPAT)N.C. COLLEGE OF ENGINEERING, ISRANA (PANIPAT)

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Presentation Contents

PROJECT OVERVIEWPROJECT OVERVIEW BLOCK DIAGRAMBLOCK DIAGRAM BLOCK DIAGRAM DESCRIPTIONBLOCK DIAGRAM DESCRIPTION COMPONENTS USEDCOMPONENTS USED CIRCUIT DIAGRAMCIRCUIT DIAGRAM Functoinal Over ViewFunctoinal Over View APPLICATIONSAPPLICATIONS REFERENCESREFERENCES

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PROJECT OVEVIEWPROJECT OVEVIEW Home automation is possible.Home automation is possible. Household Household

appliances,lighting,temprature and appliances,lighting,temprature and security alarms can be controlled.security alarms can be controlled.

It requires less technical cktIt requires less technical ckt Works on Dual Tone Multi Frequency.Works on Dual Tone Multi Frequency. DTMF decodes which key was pressedDTMF decodes which key was pressed Controller will react according to key.Controller will react according to key. 3-4 devices are controlled.3-4 devices are controlled.

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BLOCK DIAGRAMBLOCK DIAGRAM

Block Diagram DescriptionBlock Diagram Description

Trnsmitter Phone & Receiver PhoneTrnsmitter Phone & Receiver Phone

DTMF DecoderDTMF Decoder It detects the dial tone from a telephone line  and It detects the dial tone from a telephone line  and

decodes the keypad pressed on the remote decodes the keypad pressed on the remote telephone.telephone.

The dial tone we heard when we pick up the phone The dial tone we heard when we pick up the phone set is call Dual Tone Multi-Frequency.set is call Dual Tone Multi-Frequency.

In this we are use the IC MT8870DE, the main In this we are use the IC MT8870DE, the main component to decode the input dial tone.component to decode the input dial tone.

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RelayRelay

Electrical switch operated by Electrical switch operated by electromagnetelectromagnet

If magnetic field attracts an armature If magnetic field attracts an armature that is mechanically linked to a that is mechanically linked to a moving contact.moving contact.

This link makes switch On or OffThis link makes switch On or Off

Circuit Diagram Circuit Diagram

Circuit Diagram Circuit Diagram

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Functional Overview of the project

Digit ‘1’ pressed

Digit ‘1’ decoded

DTMF Generation

DTMF Detection

Components UsedComponents Used

MT8870 ICMT8870 IC 3.75 Mhz Crystal3.75 Mhz Crystal Capacitors(22 pf)Capacitors(22 pf) Ceramic capacitorCeramic capacitor Polyster capacitorPolyster capacitor Resistors(100k,330k)Resistors(100k,330k) LedsLeds PcbPcb

5v-1a adaptor5v-1a adaptor Power jackPower jack Relay Relay Outocoupler(mct2f)Outocoupler(mct2f) 4.7 k registers4.7 k registers 18 Ic base18 Ic base

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DTMF Applications

automate any devicesautomate any devices Tele-BankingTele-Banking Electronic mail systemElectronic mail system Remote operationRemote operation Home AutomationHome AutomationFast AutomationFast Automation

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ReferencesWeb links:Web links:

www.electronicsforyou.comwww.electronicsforyou.comwww.google.comwww.google.comwww.siongboon.comwww.siongboon.comwww.projectguidance.comwww.projectguidance.comBooks:Books:

VHDL Programming by Douglas L. perry

Linear integrated circuits by Gayakwad

Electronic devices and circuit theory by R.L.Boylestad

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Thank YouThank You