Procedure:
In a system there were number of
sensor nodes are placed for example
nearly 100 wireless sensors . We need to
use these wireless node to sense the atmosphere . A sink node is used to
collect all the data collected by wireless sensors. Initially there were number
of sink node we used so that it all will collect the data sensed by wireless
sensors . But that also became a drawback because there were more energy loss. So
we are using single sink node that will collect all the data from all the
wireless sensors . The sink node is in mobility state. The wireless node is
placed in such a way that it will form a tree structure to transmit the data to
sink node. Once the sink node is placed and the wireless node are placed in
tree structure then the data sensed by it is transmitted to the sink node
through the best way . The sink node is moved from one place to another place
to collect the data sensed by the sensors in that area’s sensor nodes.
Simulation to create Wireless
sensor Nodes:
Wsnnode[numnodes]::HostBmac
{
Parameters:
Display(“i=device/palmpc,x=234,y=132”)
}
The
above snippet is used to create n number of wireless sensor nodes. We have to
pass the value for numnodes when we run the program. The following snippet is
used to create the sink node .
Sink::Hostbmac
{
Parameters:
Display(“i=device/antenna,x=677,y=458”)
}
The
above snippet helps to create the sink node . x , y represents the position of the sink node in
that area also ‘I’ represents the image to be appeared on screen when we run
the program. Both sink and wsnnode are derived from Hostbmac class which we
created in mixim project and we referenced in this current project in
omnet++.Once we derive the class the facilities available in that particular
class get derived by the derived class. The current project is called as the
derived class and the mixim project’s class is called the base class for the
class.
Once
we frame the network if we create 50 wireless sensor node and a sink node they
form tree like structure and started communicating each other and to the sink
node . Once the sink node mobility speed and time interval and acceleration is
set according to that the sink node moves from one place to another.
OMNET++ TUTORIALS & TRAINING FOR BEGINNERS :
VIDEO:1
VIDEO :2
VIDEO:3
VIDEO :5
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