Tag: wireless

OptiMon: Reliable wireless monitoring for industry

Condition and energy monitoring of industrial assets by means of sensor systems has become widespread in recent years. Current systems are mostly wired, and thus installation can be difficult, inflexible, and costly. In addition, wired condition monitoring is not feasible in some cases (e.g., with moving parts), and harsh environments pose a threat for present technologies (vulnerable cables and connectors). Wireless condition monitoring is flexible but has challenges with respect…

Communication manager for disaster management

The wireless standard for emergency services used by first responder organizations—TETRA (Terrestrial Trunked Radio)—provides robust and secure communication but offers limited data rates unsuited for multimedia data. Such multimedia data, however, would be beneficial in complex emergency situations. For example, in case of a large event, the police needs to keep an overview of various locations to monitor incidents (e.g., violence or mass panic). Real-time reports need to be available…

Communication demands of drone applications

Small drones become increasingly popular for civil applications, including production of movies and delivery of important goods. The wireless communications and networking of drones is an essential building block in such systems. Lakeside Labs researchers have been working in this domain for several years; now they wrote a comprehensive survey article on the characteristics and requirements of drone networks. Evsen Yanmaz, senior researcher and project manager, states: “Our survey quantifies…

UWB sensor networks in airplanes

Modern airplanes are equipped with hundreds of embedded sensors and actuators necessary for structural health monitoring, aircraft control, and passenger and crew assistance. These devices are typically interconnected by wires. Using wireless connections instead of wires improves flexibility of installations and reduces the airplane’s weight. Researchers from Airbus Group Innovations have been working on this topic for several years. An ongoing joint project with the University of Klagenfurt and Lakeside…

Collaborative mapping with mobile robot teams

New packages for the Robot Operating System (ROS) are available for autonomous exploration of unknown environments using collaborating mobile robots equipped with cameras. The software offers wireless ad hoc communications between robots, merging of maps from different robots, and coordinated selection of exploration frontiers. A prototype with up to four robots was built that demonstrates its functionality in an indoor environment. There is a broad spectrum of applications for mobile…

Pulse-coupled oscillator synchronization on FPGA radios

The mathematical modeling of pulse-coupled biological oscillators offers a fully decentralized and scalable approach for time synchronization. There is a broad spectrum of work on pulse-coupled oscillators in physics, biology, neuroscience, and other disciplines. The communications engineering community has been interested to transfer these results to the synchronization of nodes in wireless networks. A one-to-one transfer is infeasible due to the differences between wireless and biological communications. Several extensions and…