OMNET++ CODE FOR WIRELESS SENSOR NETWORKS

OMNET++ CODE FOR WIRELESS SENSOR NETWORKS provide a bridge between the real physical and virtual worlds.Wireless sensor network is commonly defined as, Sensing + CPU + Radio = Thousands of potential applications. Wireless Sensor Networks  using omnet++ code allows the ability to observe the previously unobservable at a fine resolution over large spatiotemporal scales.

Sensor nodes anatomy:

• Radio used for transmitting the acquired data to some storage site.
• Sensors for temperature, humidity, light.
• Memory used for the program code and for in-memory buffering.
• Power source.
• Processor in various modes like idle, sleep and active.

Applications of sensor network:

• Predictive maintenance.
• Enable new knowledge in scientific filed.
• Intelligent buildings
• Smart home applications.
• Improve productivity.
• Healthcare applications.
• Improve food and H_2O.
• High confidence transport and assest tracking.
• . Enhanced safety and security.

Sample OMNeT++ Code for Wireless Sensor Networks.

void Sink::initNodes() {
    cModule* parent = getParentModule();
    cModule* mod;
    int numNodes;
    int trRange;
    int i;
    numNodes = parent->par("numNodes");
    ev << "Main-server numNodes is: " << numNodes << "\n"; trRange = parent->par("trRange");
    ev << "Main-server trRange is: " << trRange << "\n";
    for(i=1;i<=simulation.getLastModuleId();i++) { mod=simulation.getModule(i); if(strcmp(mod->getName(),"node")==0)
        {
            nodePtr[((Node*)mod)->myId]=(Node*)mod;
        }
    }
}

void Sink::releaseConnections() {
    cGate* g;
    cModule* mod;
    int i, j;
    for (i = 1; i <= simulation.getLastModuleId(); i++) { mod = simulation.getModule(i); if (strcmp(mod->getName(), "node") == 0) {
            if(((Node*)mod)->energy>0)

                (mod->getDisplayString()).parse("i=misc/node,yellow");
            for (j = 1; j < nrGates + 1; j++) { g = mod->gate("out", j);
                g->disconnect();
            }
        }
    }
}