How to Implement Industrial Internet of Things in ns2

To implement an Industrial Internet of Things (IIoT) network within NS2 has many steps that has includes mimicking a network of interconnected industrial devices, sensors, and actuators that communicate and share data to enhance the industrial procedures. This networks are normally need robust, reliable, and real-time communication to assist crucial industrial applications like monitoring, control, and automation. We provided the step-by-step guide to execute it in ns2.

Step-by-Step Implementation:

  1. Understand IIoT Network Components:
  • Industrial Sensors and Actuators: The devices that observe and manage industrial processes, like temperature sensors, pressure sensors, and robotic arms.
  • Edge Devices: Intermediate devices that can be processed data locally before sending it to central control system or the cloud.
  • Central Control System: A centralized system that gathers, evaluates, and handles data from the IIoT network.
  • Communication Nodes: Nodes that help communication among sensors, actuators, edge devices, and the central control system.
  1. Set Up the NS2 Environment:
  • Make sure NS2 is installed on the computer.
  • We get to know the writing TCL scripts, as NS2 simulations are controlled through the TCL.
  1. Define the Network Topology:
  • Make a nodes signifying industrial sensors, actuators, edge devices, communication nodes, and the central control system and these nodes will communicate to emulate an IIoT environment.

# Define the simulator

set ns [new Simulator]

# Create a trace file for analysis

set tracefile [open out.tr w]

$ns trace-all $tracefile

# Create a NAM file for animation

set namfile [open out.nam w]

$ns namtrace-all-wireless $namfile 10

# Set up the network parameters

set opt(chan)   Channel/WirelessChannel      ;# Channel type

set opt(prop)   Propagation/TwoRayGround     ;# Radio-propagation model

set opt(netif)  Phy/WirelessPhy              ;# Network interface type

set opt(mac)    Mac/802_11                   ;# MAC type

set opt(ifq)    Queue/DropTail/PriQueue      ;# Interface queue type

set opt(ll)     LL                           ;# Link layer type

set opt(ant)    Antenna/OmniAntenna          ;# Antenna model

set opt(ifqlen) 50                           ;# Max packet in ifq

set opt(x)      1500                         ;# X dimension of the topography

set opt(y)      1500                         ;# Y dimension of the topography

set opt(adhocRouting) AODV                   ;# Ad hoc routing protocol (suitable for decentralized networks)

# Create a topography object

create-god 100

# Configure the nodes (e.g., sensors, actuators, edge devices, communication nodes, central control system)

$ns node-config -adhocRouting $opt(adhocRouting) \

-llType $opt(ll) \

-macType $opt(mac) \

-ifqType $opt(ifq) \

-ifqLen $opt(ifqlen) \

-antType $opt(ant) \

-propType $opt(prop) \

-phyType $opt(netif) \

-channelType $opt(chan) \

-topoInstance $topo \

-agentTrace ON \

-routerTrace ON \

-macTrace OFF \

-movementTrace ON

# Create nodes: Sensors, Actuators, Edge Devices, Communication Nodes, Central Control

set sensor1 [$ns node]        ;# Sensor Node 1 (e.g., temperature sensor)

set sensor2 [$ns node]        ;# Sensor Node 2 (e.g., pressure sensor)

set actuator1 [$ns node]      ;# Actuator Node 1 (e.g., robotic arm)

set edge_device1 [$ns node]   ;# Edge Device 1

set comm_node1 [$ns node]     ;# Communication Node 1

set control_center [$ns node] ;# Central Control System

# Set initial positions for the nodes

$sensor1 set X_ 200.0

$sensor1 set Y_ 400.0

$sensor1 set Z_ 0.0

$sensor2 set X_ 400.0

$sensor2 set Y_ 400.0

$sensor2 set Z_ 0.0

$actuator1 set X_ 600.0

$actuator1 set Y_ 400.0

$actuator1 set Z_ 0.0

$edge_device1 set X_ 800.0

$edge_device1 set Y_ 400.0

$edge_device1 set Z_ 0.0

$comm_node1 set X_ 1000.0

$comm_node1 set Y_ 400.0

$comm_node1 set Z_ 0.0

$control_center set X_ 1200.0

$control_center set Y_ 400.0

$control_center set Z_ 0.0

  1. Simulate Communication Between Nodes:
  • Configure the communication links among sensors, actuators, edge devices, communication nodes, and the central control system.

# Create duplex links between Sensors and Edge Device

$ns duplex-link $sensor1 $edge_device1 10Mb 10ms DropTail

$ns duplex-link $sensor2 $edge_device1 10Mb 10ms DropTail

# Create duplex link between Edge Device and Communication Node

$ns duplex-link $edge_device1 $comm_node1 100Mb 5ms DropTail

# Create duplex link between Communication Node and Central Control System

$ns duplex-link $comm_node1 $control_center 100Mb 5ms DropTail

# Create duplex link between Actuator and Edge Device

$ns duplex-link $actuator1 $edge_device1 10Mb 10ms DropTail

  1. Simulate Data Collection and Processing:
  • Execute data collection from the sensors and processing at the edge device or central control system.

# Sensor 1 sends data to the Edge Device

set tcp_sensor1 [new Agent/TCP]

$ns attach-agent $sensor1 $tcp_sensor1

set tcp_edge_device_sink [new Agent/TCPSink]

$ns attach agent $edge_device1 $tcp_edge_device_sink

$ns connect $tcp_sensor1 $tcp_edge_device_sink

# Start sending data from Sensor 1 to Edge Device

set app_sensor1 [new Application/FTP]

$app_sensor1 attach-agent $tcp_sensor1

$ns at 1.0 “$app_sensor1 start”

# Edge Device processes data and sends it to the Central Control System

set tcp_edge_device [new Agent/TCP]

$ns attach-agent $edge_device1 $tcp_edge_device

set tcp_control_sink [new Agent/TCPSink]

$ns attach-agent $control_center $tcp_control_sink

$ns connect $tcp_edge_device $tcp_control_sink

# Start sending processed data from Edge Device to Central Control

set app_edge_device [new Application/FTP]

$app_edge_device attach-agent $tcp_edge_device

$ns at 2.0 “$app_edge_device start”

  1. Simulate Actuator Control:
  • Execute actuator control according on the data received from sensors and processed by the edge device or central control system.

# Central Control sends a control command to the Actuator

set tcp_control_center [new Agent/TCP]

$ns attach-agent $control_center $tcp_control_center

set tcp_actuator_sink [new Agent/TCPSink]

$ns attach-agent $actuator1 $tcp_actuator_sink

$ns connect $tcp_control_center $tcp_actuator_sink

# Start sending control command from Central Control to Actuator

set app_control_center [new Application/FTP]

$app_control_center attach-agent $tcp_control_center

$ns at 3.0 “$app_control_center start”

  1. Implement Edge Computing (Optional):
  • Execute the edge computing at the edge device, in which data from several sensors is processed locally before sending to the central control system.

# Example procedure to process data at the Edge Device

proc process_data {src dst data} {

global ns

puts “Processing data from $src at the Edge Device before sending to $dst”

$ns at [expr $ns now + 0.1] “$src send processed_$data to $dst”

}

# Schedule data processing at the Edge Device

$ns at 2.5 “process_data $sensor1 $control_center {sensor_data}”

  1. Run the Simulation:
  • Describe when the simulation should terminate and execute it. The finish process will close the trace files and introduce the NAM for visualization.

# Define the finish procedure

proc finish {} {

global ns tracefile namfile

$ns flush-trace

close $tracefile

close $namfile

exec nam out.nam &

exit 0

}

# Schedule the finish procedure at 10 seconds

$ns at 10.0 “finish”

# Run the simulation

$ns run

  1. Analyse the Results:
  • We can use the trace file (out.tr) to evaluat data transmission, network performance, and interactions among the IIoT components.
  • Open the NAM file (out.nam) to visualize the network operations and monitor the interactions among the sensors, actuators, edge devices, communication nodes, and the control center.
  1. Customize and Extend:
  • We can tailor the simulation by:
    • Attaching more sensors, actuators, and edge devices to make a more difficult IIoT network.
    • Executing advanced IIoT scenarios, like real-time monitoring, predictive maintenance, or energy management.
    • Mimicking various scenarios, like network failures, varying data loads, or latency-sensitive applications.

Example Summary:

This sample configures the simple Industrial Internet of Things (IIoT) network simulation in NS2, concentrating on communication among the sensors, actuators, edge devices, communication nodes, and a central control system. The simulation establishes how numerous IIoT components can interact to enhance industrial processes.

Advanced Considerations:

  • For more difficult scenarios, deliberate the integrating NS2 with specialized tools or emerging custom modules to mimic advanced IIoT technologies, like industrial automation, real-time data analytics, or machine learning at the edge.
  • Expand the simulation to contain furthered features such as Quality of Service (QoS) management, security like encryption, authentication, or fault tolerance in the IIoT networks.

Debugging and Optimization:

  • We can use the trace-all command to debug the simulation and evaluate the packet flows.
  • Enhance the simulation by filtering communication protocols, modifying data processing techniques, and changing network parameters for better performance and efficiency.

We explained about to implement and analyse the Industrial Internet of things using the recommended techniques in the simulation tool ns2. More specific informations concerning this topic will also be offered. ns2project.com will be your trusted partner to get your research done .So get your implementation of Industrial Internet of Things  in ns2 , we offer best project guidance for you.