Lecture 5: Wireless Sensor Networks

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  • May 23, 2021
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Lecture 5: Wireless Sensor Networks WSN

Introduction:

In Lecture 5, Wireless Sensor Networks, Talha Ibn Aziz, Lecturer at the Department of CSE at IUT, gives an introduction and overview of wireless sensor networks. In this lecture, Aziz first gives an overview of different kinds of wireless sensor networks and how wireless sensor networks work. The definition given is a “wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations”. A WSN consists of base stations (sink) and several wireless sensors (or nodes). Aziz then explains the various components of a WSN device or node, including the power generator, the power unit, transceiver, processing unit, sensing unit, location finding system, and mobilizer. Next, Aziz discusses Ad Hoc Wireless Networks and characteristics of WSNs, including requirements and constraints. Aziz also discusses distinguishing features of WSNs, as they are quite different compared to other ad hoc networks. Later in the lecture, Aziz will explain some challenges to WSNs, the lifetime improvement idea, and different design factors, including layered architecture, clustered architecture, data collection, and power supply. Lastly, Aziz explains the different applications of WSNs, including monitoring areas and objects and the future of wireless sensor networks.

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