CELLPHONE BASED DEVICE

CONTROL WITH VOICE ACKNOWLEDGEMENT

BY:-ANURAG SRIVASTAV

ANKUR MISHRAANKITA JAIRATH

DHARMENDRA KUMARE.C.E.4thYEAR

GUIDED BY:-MS.RAJNI

PARASHAR

OBJECTIVEIn this project operating of home appliances

like lights and water pump take place from office or any remote places.

If we forgot to switch off the lights or other appliances while going out,it helps you to turn off the appliance with your cellphone

Our cellphone works as the remote control for our home appliances.

APPARATUS USEDSEMICONDUCTORS-Microcontroller(AT89C51)Voice recording and playback device(APR9600)DTMF receiver(MT8870)Relay driver(ULN2003)Regulator(6V)

CONTD….

ResistorsDiodeLEDCapacitorsElectronic micMobile phone headset connector etc….

FeaturesNewVoice

acknowledgementAutomation of

home appliance system

Remote sensing

BLOCK DIAGRAM

Microcontroller(AT89C51)The AT89C51 is a low-power, high-performance CMOS 8-bit

microcomputer with 4Kbytes of Flash programmable and erasable read only memory (PEROM).

The deviceis manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout.

The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications

Microcontroller(pin diagram)

Features4K Bytes of In-System Reprogrammable Flash MemoryEndurance: 1,000 Write/Erase CyclesFully Static Operation: 0 Hz to 24 MHzThree-level Program Memory Lock128 x 8-bit Internal RAM32 Programmable I/O LinesTwo 16-bit Timer/CountersSix Interrupt SourcesProgrammable Serial ChannelLow-power Idle and Power-down Modes

Voice recording and playback device(APR9600)The APR9600 device offers true single-chip voice

recording,non-volatile storage, and playback capability for 40 to 60 seconds.

The device supports both random and sequential access of multiple messages.

Sample rates are user-selectable, allowing designers to customize their design for unique quality and storage time needs.

Integrated output amplifier, microphone amplifier, and AGC circuits greatly simplify system design.

The device is ideal for use in portable voice recorders, toys, and many other consumer and industrial applications.

APR9600 IC

DTMF receiver(MT8870)

The MT-8870 is a DTMF Receiver that integrates both band split filter and decoder functions into a single 18-pin DIP or SOIC package.

It is manufactured using CMOS process technology. The MT-8870 offers low power consumption (35 mW

max) and precise data handling.

MT8870

Relay driver(ULN2003)The ULN2003 is a monolithic high voltage and high current

Darlington transistor arrays.It consists of seven NPN Darlington pairs that features high-

voltage outputs with common-cathode clamp diode for switching inductive loads.

The collector-current rating of a single Darlington pair is 500mA. The Darlington pairs may be paralleled for higher current

capability. Applications include relay drivers, hammer drivers, lamp drivers,

display drivers(LED gas discharge),line drivers, and logic buffers.

ULN2003

Regulator(6V)Here is the elementary 6V 1A power supply

circuit using 7806 IC. The 7806 three-terminal positive voltage

regulator is available in the TO-220/D-PAK package making them useful in a wide range of applications.

7806  employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible.

If proper heat sinking is provided, it can deliver over 1 ampere output current.

Regulator(6V) Circuit

Single pole double throw (SPDT) switch(SA630)The SA630 is a wideband RF switch fabricated in

BiCMOS technology and incorporating on-chip CMOS/TTL compatible drivers.

Its primary function is to switch signals in the frequency range DC -1GHz from one 50W channel to another.

The switch is activated by a CMOS/TTL compatible signal applied to the enable channel 1 pin (ENCH1).

The extremely low current consumption makes the SA630 ideal for portable applications.

The excellent isolation and low loss makes this a suitable replacement for PIN diodes.

Cell phone headset connector

SomethingPin

Name Direction Description

1 Mic Microphone

2 Spk Speaker

3 Gnd Ground

Dual in-line package (DIP)Dual in-line package (DIP) switches are electronic packages

that consist of a series of tiny switches. DIP switches are used to configure computers and

peripherals such as circuit boards and modems. Actuator choices for DIP switches include slide actuators,

rocker actuators, and side actuated levers (piano).  A slide actuator configuration can have raised or recessed

slides.  A rocker actuator configuration can have raised or recessed

rockers.  A side actuated lever configuration is typically called piano

style, the "keys" are pressed down to actuate.  The number of positions available is equivalent to the number

of actuators on the DIP switch

THANK YOU