How to Implement Industrial IoT in ns2

To implement the Industrial IoT (IIoT) within ns2 that has encompasses to mimic the network of connected devices, sensors, and controllers usually used in industrial environments. This devices interact to observe and control industrial processes, make sure efficiency, reliability, and safety. Though the simulation tool ns2 is not exactly created for IIoT, we can estimated an IIoT network by configuring nodes to denote various industrial components and mimicking communication among them.

Step-by-Step Implementations:

Step 1: Conceptualize the Industrial IoT Network Simulation

In an Industrial IoT scenario:

  1. Sensor Nodes: This nodes are signify sensors that gather data from industrial machines or environments.
  2. Controller Nodes: This nodes denote controllers or gateways that procedure sensor data and problem commands.
  3. Actuator Nodes: These signify devices that execute actions based on the commands from controllers.
  4. Communication Links: Mimic wireless or wired communication among the sensors, controllers, and actuators.

Step 2: Create the Tcl Script

The following is an instance Tcl script which is mimics a simple Industrial IoT network including sensors sending data to controllers, and then forward commands to actuators.

Example Tcl Script for Simulating an Industrial IoT Network in ns2

# Create a simulator object

set ns [new Simulator]

# Define the topography object

set topo [new Topography]

$topo load_flatgrid 1000 1000  # 1km x 1km area

# Create the General Operations Director (GOD) for wireless simulations

create-god 5  # Number of nodes (2 sensors + 1 controller + 2 actuators)

# Configure the nodes for IIoT communication

$ns node-config -adhocRouting AODV \

-llType LL \

-macType Mac/802_11 \

-ifqType Queue/DropTail/PriQueue \

-ifqLen 50 \

-antType Antenna/OmniAntenna \

-propType Propagation/TwoRayGround \

-phyType Phy/WirelessPhy \

-channelType Channel/WirelessChannel \

-topoInstance $topo \

-agentTrace ON \

-routerTrace ON \

-macTrace ON \

-movementTrace OFF

# Open trace and NAM files for recording the simulation

set tracefile [open iiot_out.tr w]

$ns trace-all $tracefile

set namfile [open iiot_out.nam w]

$ns namtrace-all-wireless $namfile 1000 1000

# Define a finish procedure to close files and end the simulation

proc finish {} {

global ns tracefile namfile

$ns flush-trace

close $tracefile

close $namfile

exec nam iiot_out.nam &

exit 0

}

# Create sensor nodes

set sensor1 [$ns node]

set sensor2 [$ns node]

# Create controller node

set controller [$ns node]

# Create actuator nodes

set actuator1 [$ns node]

set actuator2 [$ns node]

# Set initial positions for nodes (representing different industrial components)

$sensor1 set X_ 100.0

$sensor1 set Y_ 500.0

$sensor1 set Z_ 0.0

$sensor2 set X_ 200.0

$sensor2 set Y_ 500.0

$sensor2 set Z_ 0.0

$controller set X_ 500.0

$controller set Y_ 500.0

$controller set Z_ 0.0

$actuator1 set X_ 800.0

$actuator1 set Y_ 500.0

$actuator1 set Z_ 0.0

$actuator2 set X_ 900.0

$actuator2 set Y_ 500.0

$actuator2 set Z_ 0.0

# Define traffic from sensor1 to controller (simulating sensor data transmission)

set tcp1 [new Agent/TCP]

$ns attach-agent $sensor1 $tcp1

set sink1 [new Agent/TCPSink]

$ns attach-agent $controller $sink1

$ns connect $tcp1 $sink1

set ftp1 [new Application/FTP]

$ftp1 attach-agent $tcp1

$ftp1 start

# Define traffic from sensor2 to controller (simulating sensor data transmission)

set tcp2 [new Agent/TCP]

$ns attach-agent $sensor2 $tcp2

set sink2 [new Agent/TCPSink]

$ns attach-agent $controller $sink2

$ns connect $tcp2 $sink2

set ftp2 [new Application/FTP]

$ftp2 attach-agent $tcp2

$ftp2 start

# Define traffic from controller to actuator1 (simulating control command transmission)

set tcp3 [new Agent/TCP]

$ns attach-agent $controller $tcp3

set sink3 [new Agent/TCPSink]

$ns attach-agent $actuator1 $sink3

$ns connect $tcp3 $sink3

set ftp3 [new Application/FTP]

$ftp3 attach-agent $tcp3

$ftp3 start

# Define traffic from controller to actuator2 (simulating control command transmission)

set tcp4 [new Agent/TCP]

$ns attach-agent $controller $tcp4

set sink4 [new Agent/TCPSink]

$ns attach-agent $actuator2 $sink4

$ns connect $tcp4 $sink4

set ftp4 [new Application/FTP]

$ftp4 attach-agent $tcp4

$ftp4 start

# Schedule the end of the simulation

$ns at 20.0 “finish”

# Run the simulation

$ns run

Step 3: Run the Tcl Script

We can save the script with a .tcl extension, for instance, iiot_simulation.tcl and then we will run the script using the below command in the terminal:

ns iiot_simulation.tcl

Step 4: Visualize the Simulation

We can visualize the emulation, open the created NAM file using:

nam iiot_out.nam

Script Explanation

  • Sensor Nodes: The nodes like sensor1 and sensor2 are signify industrial sensors which is gather and transfer data to a central controller.
  • Controller Node: The controller node that denotes a central unit which is processes data from sensors and problems commands to actuators.
  • Actuator Nodes: The actuator nodes like actuator1 and actuator2 are signify devices that execute actions based on commands from the controller.
  • Traffic Generation: TCP traffic mimics data transmission from sensors to the controller and from the controller to actuators occur command transmission.

Customization

  • Mobility Models: To execute the mobility models if we need to mimic moving sensors or actuators, like robots or autonomous vehicles within an industrial environment.
  • Different Data Types: To test with various kinds of traffic such as UDP, CBR to mimic numerous IIoT communication scenarios.
  • Error Models: Launch error models to emulate the effects of interference, packet loss, or delays usual in the industrial environments.
  • Advanced Routing Protocols: Investigate with routing protocols such as AODV, DSR, or others to observe how they execute in an IIoT setup.

Limitations

  • Simplified Approximation: This emulation has delivers a basic model of an Industrial IoT network and it does not encapsulate the complete difficulty of real-world industrial systems, like complex topologies, heterogeneous networks, or industrial-specific protocols.
  • No Physical Layer Simulation: This script does not mimic the physical layer features particular to IIoT, like interference, channel fading, or specific industrial communication standards such as Modbus, PROFINET.
  • Limited IIoT-Specific Features: The simulation tool ns2 is not created exactly for IIoT, therefore the simulation is limited to simplified functionality and high-level abstractions.

In this manual, we had presented comprehensive guided that has implement and simulated procedure to execute the Industrial IoT in the simulation tool ns2. If you require more informations of this topic we will be offered.

ns2projects.com, help you with Industrial IoT project ideas and show you how to implement them successfully. Our team guides you in making your projects work well. We set up nodes to represent different parts of an industry and simulate communication using ns2.