Wireless Sensor Networks

Wireless sensor networks (WSNs) can be defined as self-configured and infrastructure-less wireless networks. WSNs monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants and cooperatively pass their data through the networks to the central location or sink where it can be observed and analysed. The characteristics of these devices and the operating principles, including those of MEMS (microelectromechanics system), which are the current trends in sensor devices fabrication, have been discussed. This book is about sensors and their applications in various fields like automobiles, wireless sensor networks, humidity sensing devices, manufacturing and medical applications. Each chapter contains necessary schematic diagrams coupled with three categories of review questions. This book provides presentations of various types of sensors along with transducers that are used in today's current industrial scenario. It also describes in detail the comprehensive state of present-day technologies. The students of engineering will find this volume highly useful for their course work along with guidance for final year projects and seminar work. This will also serve as a pointer to choose their future field of innovation and research work.