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COE 341
DATA AND COMPUTER COMMUNICATIONS
Presentation in
Wireless Sensor Network
Prepared for :
 Dr. Radwan E. Abdel-Aal

Done By :
 Abdulaziz A-Harbi 232139
 Saleh Al-Mutawa
235267

QUESTIONS
What is Wireless Sensor Network?
 Is there a difference between Wireless
and Radio ?
 When was the first invention ?
 What is Functionality ?
 How does it work ?
 How can we create our own WSN ?
 Is there any application ?

I. INTRODUCTION:
- Wireless sensor network (WSN) is a
wireless network consisting of spatially
distributed autonomous devices using
sensors to cooperatively monitor
physical or environmental conditions,
such as temperature, sound, vibration,
pressure, motion or pollutants, at
different locations .
Abstract

Although, the first invention was for
military applications such battlefield
surveillance and wireless sensor
networks are now used in many
different civilian areas which include
habitat monitoring, applications of
healthcare, home automation,
environment and traffic control.
Important of WSN

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As you can notice the different important
applications let the Wireless Sensor
network play primary issue on our day life.
So, because of the importance of this type
of network we will focus the light in this
Presentation on the functionality, structure
and a little history about this great invention.
Moreover, we will explore the recent
application of the wireless sensor network.
II. HISTORY &
BACKGROUND :

Most of people thought that there is a
big difference between wireless and
radio.
Do you agree with this ?
II. HISTORY &
BACKGROUND
However, they are almost the same
except that they differ in the spelling
and some small aspects on meaning.
 This is the first shock you heard it
from this report.
 So, what do we mean by wireless?
And when it was invented?

Wireless
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Wireless does not mean spark or noise.
Wireless means communication without the
use of wires other than antenna, which is the
source of producing wireless waves.
It is just uses the ether and the ground as
place of wires.
Radio exactly the same meaning which is the
wireless transmission of signals, by modulation
of electromagnetic waves with frequencies
below those of visible light.
Accessing WSNs through
Internet
The 1st Invention of Wireless


The history of wireless refers to 1896,
February by Guglielmo Marconi
Journeyed from Italy to England just to
show the scientist and the Corporation of
telegraph in British what he had developed
of an operational wireless telegraph
apparatus.
And his first patent application was filed on
2 June of that year.
Details of History of WSN
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After that the cooperation of Mr. W.H.
Preece, the chief of Electrical Engineering
of the British Post-office Telegraphs, signals
were sent in July 1896 over a long
distance of one and three fourths miles on
Salisbury Plain.
The Table 1 Also, will summarize the time
developed on Wireless Technologies
evolution.
Table 1: A simple timeline in
Wireless Technologies evolution
1896
1927
1970s
Guglielmo Marconi develops the first
wireless telegraph system.
First commercial radiotelephone service
operated between Britain and the US.
Packet switching emerges as an efficient
means of data communications, with the
X.25 standard emerging late in the decade.
Cont’ Table 1
1983
2000
January 1, TCP/IP selected as the official
protocol for the ARPANET, leading to rapid
growth.
802.11(b)-based networks are in popular
demand.
2000–1 Wired Equivalent Privacy (WEP) Security is
broken. The search for greater security for
802.11(x)-based networks increases.
FUNCTIONALITY
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how these nodes communicate together without conflict ?
How these nodes knows that the detected signal is the
information it need.?
factors that make better communication without conflict
1-Network Topology
2-Communication Protocol
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Network Topology:
-mesh topology is the best for WSN since each node will
communicate with the nearest node.
-Fully Connected topology is the worst once because
each node is connected with all other node causing
routing issue as network get larger.
Network Topology
Communication Protocol
The ability of a sensor node know
weather node to that the signal
received is a information is by the
header that should added to
transmitted information by the
transmitter sensor.
 Header contains the address of the
destination, length of message and
the source information.

STRUCTUR AND PARTS
Any one can create WSN at home.
 The parts that is needed to create the
Wireless sensor Network

-Microcontroller(IC1).
-Capacitor(C).
-Transmitter board (Ultra high frequency).
-receiver board (Ultra high frequency).
-Crystal(Q1).
-resistor(R1).
STRUCTUR AND PARTS
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All what you need is buy the parts and
implement the simple circuit .
STRUCTUR AND PARTS
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You can connect with the circuit
shown alarm system ,temperature
sensor or also humidity sensor. That
is why, With our imagination we could
make an intelligent and creative
systems using Wireless Sensor
Network.
Types
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There is two main types of Wireless Sensor Network
-Hierarchical Wireless Sensor Networks (HWSN).
-Distributed Wireless Sensor Networks (DWSN).
HWSN is pre defined topology that is designed when the
network is created.
Nodes in the network divided in three based on the cabability.
A. Base Station.
B. Cluster Heads.
C. Sensor nodes.
The sensor nodes are usually located near to the
base station
Cluster Heads collect the traffic from nods to send it
to the base station.
Types
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Types of data flow:
-Unicast (sensor to sensor).
-Multicast (group wise).
-Broad cast (base station to sensor).
# DWSN is network where network topology is
unknown before the development
# the nodes scan their radio coverage area to
find their neighbors.
Application of Wireless
Sensor Network
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In Medical health care field
WSN are used emergence with embedded
systems to monitor the health of the patients in
the hospital
Or outside the hospital through the internet.
A. Wireless pulse Oximeter sensor
B. Wireless muscle movements monitor

Robotics field
A ring of robots to fight fires
Wireless pulse Oximeter
sensor
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devices collect the heart pulse rate and the Oxygen
saturation and send these data over a short
Range(100m) Wireless Network to any number of
receiving devices, including PDAs, laptops, or
ambulance-based terminals which in turn can display the
receiving data and record them
The device can alarms if data fall out of specific
parameter.
Easy to wear like hand watch.
Wireless limb movements
monitor
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This device can monitoring the limb
movements and muscle activity when they
exercise.
Sensor nodes in all the muscles of the body to
create a network and send all the recorder info
to the master.
Master sends the info to the device that
monitor.
A ring of robots to fight
fires
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Robots that are connected to
communicate with each other by
Wireless Sensor Network to fight the
fire by sensing the fire and locate it to
make a ring shape around it and each
Fire Fighter Robot will fight fire from
one direction so that the fire will be
easily stoppped
CONCLUSION
Importance of Wireless
 Features of Wireless
 Future of Wireless
