Wireless Sensor Network in IoT

Wireless Sensor Network in IoT

Wireless Sensor Network in IoT is an infrastructure-less wireless network that is used for deploying a large number of wireless sensors that monitor the system, physical and environmental conditions. Our extremely motivated and professional engineers are very well equipped to provide you with an all round solution if you are looking to incorporate WSN in your business.

Networks connecting Wireless Sensors

To connect Sensors embedded in IoT devices, a communication protocol is used. A low-power wide-area network ,LPWAN, is a type of wireless network designed to allow long-range communications between these IoT devices.Lora based Wireless Sensor network is widely used. Sub-1 GHz, Zigbee,Thread etc are also used to connect sensor networks and gateway and data collected from this sensor network can be sent to cloud using cellular networks such as NBIoT, LTE-M or wifi etc.

Sensor Network Technologies
Wireless Sensor Network

Components of WSN in IoT

  • Sensor Nodes- Sensors play the vital role of capturing environmental variables. 
  • Radio Nodes- Radio nodes or master nodes in a Wireless sensor network receive data from the sensors and forward it to the gateway
  • Access Point or Gateway-It is used to receive the data sent by the radio nodes wirelessly typically through the internet and send it over the cloud.
  • Edge Computing and Data Analysis-The data received by the gateway is analyzed  . This data is further analyzed on the cloud and displayed on IoT mobile application or IoT dashboard.

IoT and Wireless sensor networks

WSN protocols in IoT are used to provide a connectivity medium between IoT sensor nodes and a central gateway. IoT consists of different tech stacks, WSN is just one and is a subset of IoT. It is a part where data is transmitted among several IoT devices mostly without internet.

Wireless Sensor Network

wireless sensor network applications

Patient monitoring in hospitals , Home security, Military applications, Livestock monitoring , Server Room monitoring
Wireless sensor network for smart agriculture
Wireless sensor network for forest fire detection
Wireless sensor network for water quality monitoring
Wireless sensor network for office monitoring
Wireless sensor network for environmental monitoring
Wireless sensor network for landslide detection
Wireless sensor network for IoT security

Wireless Sensor networks architecture

Fault Tolerance – Fault tolerance is the ability of the network to work even when there is a break due to sensor node failures.
Mobility of Nodes – Nodes can be moved anywhere within the sensor field in order to increase the efficiency of the network.
Scalability – WSN is designed in such a way that it can have thousands of nodes in a network.  
Feedback in case of Communication Failure – If a particular node fails to exchange data over the network, it informs the base station immediately without any delay.

Wireless Sensor Network

What is Wireless Sensor Network in IoT?

Wireless Sensor Network (WSN)is deployed in a large area with a large number of wireless sensors nodes in an ad-hoc manner that is used to monitor the system, physical or environmental conditions. The data is then sent to gateway for processing or edge computing.

What are the communication protocols on which Wireless sensor networks communicate?

The sensor nodes are connected over Low Power Wide Area Network (LoRaWAN, Sub-1Ghz, ZigBee, Sigfox etc) which is used to connect sensor Nodes to the gateway unit. The gateway unit is connected to the internet (consisting of Cellular or WiFi Module) from where the processed or edge computed data which is further sent to the server or Cloud.

What is the IoT gateway in Wireless Sensor Network?

The Gateway acts as a bridge between the Wireless Sensor Network  and cloud. IoT Gateways manage device connectivity, data filtering, processing, protocol translation, security etc. Adding a cellular module (works on LTE, NBIoT, LTE-catM1, etc) or an Internet modem (works on WiFi) to the gateway makes the WSN remotely managed.

Can we use FOTA in Wireless Sensor Network?

Yes, FOTA update in wireless sensor network can be done, although it is sometimes complex to provide wireless update to node device because of memory and storage limitations.

How does a wireless sensor network work?

The sensor nodes used in Wireless Sensor network systems are integrated with the onboard controllers. The complete circuitry manages the operation and monitors it mainly. Everything is connected with the base station known as the Gateway, where high end processing of data collected from distributed sensors is done. The data is further sent to cloud for storage and analysis, and this data is fetched by a mobile or a cloud application. All the distributed sensors devices in WSN are mostly connected over a LPWAN  and communicate with the gateway.

What are the applications for wireless sensor networks in IoT?

Surveillance and monitoring,Landslide detection ,Patient monitoring in hospitals ,Environmental monitoring ,Smart Agriculture, Home security, Military applications, Livestock monitoring and many more.

Wireless sensor network can be designed with which topology?

Wireless sensor networks mostly designed in two Topologies:-
Centralized sensor network and Distributed sensor network

What is the difference between Wireless Sensor Network and IOT?

A wireless sensor network is a subset of the IoT system.

IoT involves different tech stack including sensors, hardware, gateways, analytics to end application.
WSN are usually non-IP networks. They run on low power wide area networks such as Zigbee, LoRa etc. These sensors forward their data to another hub which is a gateway between hardware and cloud. And this is how WSN forms an IoT system.