Wireless Control of Appliances-goutam Padhy

7/31/2019 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

Wireless Control of Appliances-goutam Padhy

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