ppt on wireless technologies

8/10/2019 Ppt on Wireless Technologies

1/22

Submitted By:

SRI SAI COLLEGE OF ENGINEERING AND TECHNOLOGY.

-LOLUR ANANTAPUR

.

M.PINTU KUMARI.

E-MAIL ID:

PINTU.TWEETY

507

@gmail.com

P.NAGA PRIYANKA.

E-MAIL ID:

PRIYA.SWEETY

501

@gmail.comCSE DEPATRMENT IIIrd year B-tech
mailto:[email protected]:[email protected]:[email protected]:[email protected]


2/22

OUT LINES

HISTORY OF WIRE-LESS TECHNOLOGY .

WHAT IS WIRE-LESS TECHNOLOGY ?

WHY WIRE-LESS TECHNOLOGY IS NEEDED?

TYPES OF WIRE-LESS TECHNOLOGY?

HOW IT WORKS ?

APPLICATIONS.

BENFITS.


3/22

HISTORY OF Wire less technology

A Special thanks to Guglielmo Marconi

who opened the way for mordern

Wireless communications in 1895

In beginning wireless communications

has developed into a key element of

modern society.

From satellite transmission radio and

television broadcasting to the now

ubiquitous mobile telephone wireless

communications has revolutionized the

way societies function.

Guglielmo Morconi


4/22

Wireless Technologies are secure specificationthat allows users to access information instantly via

handh eld wireless devicessuch as mobile phones,pagers, two-way radios, Smartphone's and

communicators .

Wireless Technologies really provide theconvenient and easy approach to communications

between different areas that are very behind from the

different types of the modern and the latest technologies.

Itwas established and came in the field of

Computer Networking Technologies from the last three

years and today they are grown rapidly and become a very

good and useful source of communication among the

people and all the technologies of present era.

WHAT IS WIRELESS TECHNOLOGY?


5/22

WHY WIRE-LESS TECHNOLOGY IS NEEDED?

A wire less techno logyis a technology in

which use of wire for communicating each other

is eliminated. Electromagnetic waves has beenused in many of these technologies.Radio and

TV broadcasting to the Mobile phone and Blue

tooth are examples of wireless technologies.

More mobile and portable so that the same

equipment with wireless communications can

easily be moved from one spot to another, either

continuously or periodically.

Less susceptible to ground potential rise

because no cabling is needed.

Data would be very expensive or difficult to

retrieve using wired communications, so far

many peoples prefer Wire-Less

communications.


6/22

Different types of Wireless Technologies

ZigBee

Wi-Fi

Bluetooth

Wimax


7/22

Wi-Fi Technology :

Wi-Fi is commonly called as wireless LAN.

Itis one of those networks in which high frequency radio wavesare required for transmission of data from one place to another.

WiFioperates on several hundreds feet between two places ofdata transmission.

Thistechnology only works on high frequency radio signals.Otherwise, it will not work properly.

Frequency band is the 2.4Ghz band.

- Range of 100-150 feet

Nowadaysthis technology is used as office or home networkand in many electronic devices.

WirelessLAN or WiFi is divided into three main parts on whichits whole working depends and all of its applications also depend on

these parts i.e. infrastructure mode, ad hoc network and mixednetwork.


8/22

A type of low cost, low power and wireless technology

which is used for the different purposes at ultra low poweris known as Zig bee technology.

Lowpower radios on the basis of standard personalwireless networking are used by a protocol to enhance the

technology.Distances between devices is 30-300

feet.

Itoffers excellent wireless control path network.

Itwas not proposed or designed for the excellent or

high speed data transfer rate applications. But it wasdesigned for working on excellent long battery timings at

low cost and also at ultra low power consumption.

It is an ideal technology which operates at low power

and low cost and used for wireless monitoring and control.

ZigBeeTechnology:


9/22

Bluetooth technology:

Bluetoothis an excellent protocol for wireless communication because it'scapable of transmitting data at nearly 1MB/s, while consuming 1/100th of the

power of Wi-Fi.

Thereare no charges for delivering a message using Bluetooth unlike usingSMS text messaging. Very short range of only 33 feet (approx 10m)

Frequency band is the 2.4Ghz band.

Themost typical application example is communication between a mobilephone (or PDA) and a laptop. For many handheld Bluetooth applications low

power consumption is very important.


10/22

Oneof the important wireless technologies

another technology is present that is called asWimax technology.

Itis defined as a type of the wirelessnetworking technology that is required to transmit

the information in the form of microwaves

through different type of methods of wirelessnetworking from point to point or multi point

access top the devices which are portable in

nature.

Addresses the "first-mile/last-mile"

connection for longer

distances (5-30 miles) and faster rates (45-75

Mbps)

WimaxTechnology:

Wi- Max device


11/22

Voice

communicat ion :

Voicecommunication is also thetypes of wireless technologies.

Inthis types all the types oftechnologies related to the

communication through the voice isincluded such as communication through

different types of cell phones, through

different types wireless internet

technologies etc


12/22

How does wireless communication work?

A central unit communicates wirelessly with a range of devices which meter and

control the modern home.

Wireless communication only uses a small amount of power. Only a small

bandwidth is required to provide measurement data or messages about switchingappliances on and off. This means that its possible to use considerably less power

to communicate. In fact, power consumption is so low that you can use batteries,

rather than mains power, for sensors and meters.

This allows considerable freedom to position the equipment where it is needed,

irrespective of whether there is a power point in the vicinity or not.


13/22

Wireless communication

is based on

A local master (one unit), which

controls the communication .

a number of slaves, which supply

measurement data or provide orders

such as switch on and switch off .

The common and open standard

ensures that any master can

communicate with slaves supplied by

different companies.

It is also a requirement that the

master can communicate informationvia a fixed format, thereby ensuring

that remote reading, remote control.


14/22

MASTER

The master is a mini PC that controlsthe dialogue with the slaves.

The master acts as a sort of liaisonofficer that gives orders locally while

also reporting to, and receivingmessages from, the server.

This ensures that the unit cantake remote readings, and

operates both as a monitor andas a remote controller.

SLAVES

Slaves are meters, on/off switches.

It is a other types of hardware thatcontrol something (e.g. a

thermostatic valve).

Slaves carry out an order to adjusta setting, or send messages back

with information on a measurementvalue or similar.


15/22

Different commercial wireless

Examples:

Radio:

FM and AM Radio is the first to use wirelesstechnology commercially.

This brings wireless technology to the common man

Television:

Another step ahead with wireless technology is

Television broadcast.

This brings wireless technology even closer.


16/22

Mobile :

Mobile technology such as GSM and CDMA

made a revolution on communication and ituses time division, frequency division and code

division multiplexing.

These are the latest and hottest example of

wireless technologies.

GPS:

Latest and greatest technology which uses

wireless is Global positioning system

radiowaves are used for this.


17/22

Angelic:

Rapid installations.

Easy maintenance.Avoided ground potential rise problems.

Mobility.

Safety due to remote operations.

Warmth of a van outside a freezing

substation.More data and additional capabilities

Devilish:

Eavesdropping on data.Unauthorized control commands.

Unreliable, disrupted communications in

the noisy

substation environment.

Hackers, viruses, and worms.

Two Images of Wireless Communications in Substations:


18/22

1 Less expensive.

2 More rapid implementation.

3

Less experienced technicians can often beused.

4 Remote Area Connectivity

5 Anywhere, Anytime Work

6 EmergencyAlerts

BENFITS


19/22

Data being transmitted is not very time-sensitive, and can tolerate

delays.Data can be lost for the length of the delay, or

Systems on either side buffer the data until communications become

available

again, and the data can be resent.

Wireless communications are temporaryDue to short-term need or emergency situation

Wireless communications systems are for backup or redundancy

Infrequent usage where possible delays are acceptable.

Data is transmitted and received via cell phones and/or mobile data

terminals by utility users.

Obviously, when new functions can be cost justified by using

inexpensive wireless communications.

CONCLUSION

20


20/22

Though the Wirelesscommunications consistssome limitations like theseare temporary ,inconsistent standardsbut

its very userfriendly,fast,accurate, easy for theoperate.

20


21/22


22/22

ppt on wireless technologies

Documents