Wireless Control of Appliances-goutam Padhy

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    WIRELESS COMMUNICATION

    USING RF MODULE

    ALL RIGHTS ARE BEING RESERVED TO GOUTAM PADHY

    COPY RIGHT PROTECTED@GOUTAM PADHY

    FOR MORE DETAILS CONTACT:Phone number:+918093611841(self)

    +918093541377

    EMAIL:

    [email protected]

    [email protected]

    by

    Goutam padhy Roll # 201018162

    http://var/www/apps/conversion/current/tmp/scratch21916/[email protected]://var/www/apps/conversion/current/tmp/scratch21916/[email protected]://var/www/apps/conversion/current/tmp/scratch21916/[email protected]://var/www/apps/conversion/current/tmp/scratch21916/[email protected]
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    By

    ABSTRACT

    ACKNOWLEDGEMENT..

    1. CIRCUIT DIAGRAM.

    a.TRANSMITTER CIRCUIT DIAGRAM

    b.TRANSMITTER IMAGE DIAGRAM

    C.RECIVER CIRCUIT DIAGRAM..

    D.RECIVER IMAGE DIAGRAM.

    2. WORKING PRINCIPILE..

    3.APPLICATION.

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    ABSTRACT

    RF modules are normally divided into three groups:

    1. RF transmitter module

    2.RF receiver module

    3.RF transceiver module.

    Transmitter module is an electronic component using a variety of radio signals to

    remote control the target device which has a receiver module built-in. The remote

    distance can be very long and you don't need a line-of-sight remote controlling

    compared to remote controls using infrared technology. And RF modules are widelyused in garage door openers, wireless alarm systems, industrial remote controls and

    wireless home automation systems.

    1 Superheterodyne receiver and Super-regenerative receiver

    2 RF Signal Modulation

    3 Attach an external antenna

    4 Main factors concerned in RF module operating distance

    5 Typical Applications

    Superheterodyne receiver and Super-regenerative receiver

    There are two types of RF receiver modules: superheterodyne receiver and super-

    regenerative receiver, superheterodyne has performance advantage over super-

    regenerative ones, but also is more complicated and price is a little higher. The detailed

    explanation between the two types of receivers can be found here: Superheterodyne

    receiver and Super-regenerative receiver

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    TRANSMITTER CIRCUIT

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    RF TRANSMITTER MODULE (315 MHz)

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    RECIVER CIRCUIT

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    RF RECEIVER MODULE(315 MHz)

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    A radio transmitter is an electronic circuit which transforms electric power from a

    battery or electrical mains into a radio frequency alternating current, which reverses

    direction millions to billions of times per second. The energy in such a rapidly-

    reversing current can radiate off a conductor (the antenna) as electromagnetic waves

    (radio waves). The transmitter also "piggybacks" information, such as an audio or video

    signal, onto the radio frequency current to be carried by the radio waves. When they

    strike the antenna of a radio receiver, the waves excite similar (but less powerful) radio

    frequency currents in it. The radio receiver extracts the information from the received

    waves. A practical radio transmitter usually consists of these parts:

    A power supply circuit to transform the input electrical power to the higher voltages

    needed to produce the required power output.

    An electronic oscillator circuit to generate the radio frequency signal. This usually

    generates a sine wave of constant amplitude often called the carrier wave. In most

    modern transmitters this is a crystal oscillator in which the frequency is precisely

    controlled by the vibrations of a quartz crystal.

    A modulator circuit to add the information to be transmitted to the carrier wave

    produced by the oscillator. This is done by varying some aspect of the carrier wave. The

    information is provided to the transmitter either in the form of an audio signal, which

    represents sound, a video signal, or for data in the form of a binary digital signal.

    In an AM (amplitude modulation) transmitter the amplitude (strength) of the carrier

    wave is varied in proportion to the audio signal.

    In an FM (frequency modulation) transmitter the frequency of the carrier is varied by

    the audio signal.

    In an FSK (frequency-shift keying) transmitter, which transmits digital data, the

    frequency of the carrier is shifted between two frequencies which represent the two

    binary digits, 0 and 1

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    1.vehicle monitoring

    2.remote control

    3.telemetry

    4.small-range wireless network

    5.wireless meter reading

    6.access control systems

    7.wireless home security systems

    8.area paging

    9.industrial data acquisition system

    10.radio tags reading

    11.RF contactless smart cards

    12.wireless data terminals

    13.wireless fire protection systems

    14.biological signal acquisition

    15.hydrological and meteorological monitoring

    16.robot remote control

    17.wireless data transmissions

    18.digital video/audio transmission

    19.digital home automation, such as remote light/switch

    20.Industrial remote control, telemetry and remote sensing.

    21.Alarm systems and wireless transmission for various types of low-rate digital signal.

    22.Remote control for various types of household appliances and electronics projects.

    23.many other applications field related to RF wireless controlling

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    For some more details you

    can contact me.

    thank u