Wireless Sensor Network(WSN)

Wireless Sensor Network(WSN): A WSN comprises distributed devices with sensors which are used to monitor the environmental and physical conditions. A wireless sensor network consists of end nodes, routers and coordinators. End nodes have several sensors attached to them where the data is passed to a coordinator with the help of routers. The coordinator also acts as the gateway that connects WSN to the internet. Example:

Weather monitoring system

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Indoor air quality monitoring system

Soil moisture monitoring system

Surveillance system

Health monitoring system

Communications Protocols: They are the backbone of IoT systems and enable network connectivity and linking to applications. Communication protocols allow devices to exchange data over the network. Multiple protocols often describe different aspects of a single communication. A group of protocols designed to work together is known as a protocol suite; when implemented in software they are a protocol stack. They are used in:

Data encoding

Addressing schemes