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 H2O.
- 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(); } } } }