ABSTRACT
Wireless sensor networks are comprised of a variable number of autonomous electronic devices, with possible mechanic components, that have the capability of remote sensing, signal processing, and communication in an ad hoc fashion. This chapter discusses a novel event-driven, application-specific network design approach. It proposes alternatives to legacy protocol implementations in which data, or urgent messages, can be delivered to nodes in the network with time guarantees. The chapter details various hardware implementations of nodes and wireless sensor networks. It presents a survey of the applications, technologies, and challenges of wireless sensor networks. With the ever-increasing drive toward miniaturization of components, a strong body of research has established that micro-electro-mechanical systems technology will likely enable researchers to integrate a wide selection of sensor equipment onto one chip. It is expected that this research area will remain very active with new applications and new challenges.
