A wireless sensor network (WSN), on the other hand, can reach up to hundreds of kilometres. Inspired by battlefield surveillance, WSNs consist of autonomous sensors spread across large areas.

A sensor network normally constitutes a wireless ad-hoc network, meaning that each sensor supports a multi-hop routing algorithm (several nodes may forward data packets to the base station).

Nowadays, wireless sensor networks (WSN) have been widely developed. The feature of WSN is that it supports the short-range and low-speed transmission as well as low-power consumption. ZigBee is a ...

In this paper, we present SafeTrack, a novel, secure tracking protocol specifically for mobile sensor nodes in unstable wireless sensor networks (UWSNs). To the best of our knowledge, the proposed ...

"Ultra low power analog-to-digital converter for medical devices and wireless sensor nodes." ScienceDaily. ScienceDaily, 20 August 2012. <www.sciencedaily.com / releases / 2012 / 08 / 120820121228 ...