scholarly journals Emergency Communications and Alerting Systems for Fire Brigades in Baden-Württemberg – Much Room for Improvement?

2018 ◽  
Vol 331 ◽  
pp. 479-484
Author(s):  
Eva Gräßle ◽  
Robert Müller-Török
Keyword(s):  
Communication Systems ◽  
New Technology ◽  
Digital Radio ◽  
Standard Means ◽  
Complementary Methods ◽  
Emergency Communications ◽  
Radio Systems ◽  
Alerting Systems ◽  
Police Forces

Most of the fire brigades in Baden-Württemberg are volunteer forces, hence creating the need for readily available and reliable alerting and communication systems for these forces as well. Digital Pagers are the standard means of alerting but, due to their limited reliability, alternative and complementary methods like Apps, SMS, etc. are also used by these volunteer forces. Regarding communication at the scene, the transition from open analogue to encrypted digital radio systems has been on its way for nearly 20 years. As of today, new technology is available for police forces whilst fire brigades still have to use analogue systems. This contribution analyses the situation, past and present, planning and attempts at improvement.

scholarly journals Trajectory planning in UAV emergency networks with potential underlaying D2D communication based on K-means

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Shuo Zhang ◽  
Shuo Shi ◽  
Tianming Feng ◽  
Xuemai Gu
Keyword(s):  
Trajectory Planning ◽  
Trajectory Optimization ◽  
Communication Systems ◽  
Complete Coverage ◽  
Wireless System ◽  
Fifth Generation ◽  
Emergency Communications ◽  
Trajectory Length ◽  
Post Disaster ◽  
Joint Evaluation

AbstractAt present, unmanned aerial vehicles (UAVs) have been widely used in communication systems, and the fifth-generation wireless system (5G) has further promoted the vigorous development of them. The trajectory planning of UAV is an important factor that affects the timeliness and completion of missions, especially in scenarios such as emergency communications and post-disaster rescue. In this paper, we consider an emergency communication network where a UAV aims to achieve complete coverage of potential underlaying device-to-device (D2D) users. Trajectory planning issues are grouped into clustering and supplementary phases for optimization. Aiming at trajectory length and sum throughput, two trajectory planning algorithms based on K-means are proposed, respectively. In addition, in order to balance sum throughput with trajectory length, we present a joint evaluation index. Then relying on this index, a third trajectory optimization algorithm is further proposed. Simulation results show the validity of the proposed algorithms which have advantages over the well-known benchmark scheme in terms of trajectory length and sum throughput.

scholarly journals Influence of Aircraft Power Electronics Processing on Backup VHF Radio Systems

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 777
Author(s):  
Jan Leuchter ◽  
Radim Bloudicek ◽  
Jan Boril ◽  
Josef Bajer ◽  
Erik Blasch
Keyword(s):  
Power Electronics ◽  
Electromagnetic Interference ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Intermediate Frequency ◽  
Radio Communication ◽  
Very High Frequency ◽  
Switching Power ◽  
Radio Systems ◽  
The Impact

The paper describes the influence of power electronics, energy processing, and emergency radio systems (ERS) immunity testing on onboard aircraft equipment and ground stations providing air traffic services. The implementation of next-generation power electronics introduces potential hazards for the safety and reliability of aircraft systems, especially the interferences from power electronics with high-power processing. The paper focuses on clearly identifying, experimentally verifying, and quantifiably measuring the effects of power electronics processing using switching modes versus the electromagnetic compatibility (EMC) of emergency radio systems with electromagnetic interference (EMI). EMI can be very critical when switching power radios utilize backup receivers, which are used as aircraft backup systems or airport last-resort systems. The switching power electronics process produces interfering electromagnetic energy to create problems with onboard aircraft radios or instrument landing system (ILS) avionics services. Analyses demonstrate significant threats and risks resulting from interferences between radio and power electronics in airborne systems. Results demonstrate the impact of interferences on intermediate-frequency processing, namely, for very high frequency (VHF) radios. The paper also describes the methodology of testing radio immunity against both weak and strong signals in accordance with recent aviation standards and guidance for military radio communication systems in the VHF band.

scholarly journals Usability Flaws in Medication Alerting Systems: Impact on Usage and Work System

2015 ◽  
Vol 24 (01) ◽  
pp. 55-67 ◽  
Author(s):  
E. Ammenwerth ◽  
E. Roehrer ◽  
S. Pelayo ◽  
F. Vasseur ◽  
M.-C. Beuscart-Zéphir ◽  
...  
Keyword(s):  
Patient Safety ◽  
New Technology ◽  
Medication Management ◽  
Secondary Analysis ◽  
Previous Attempt ◽  
Negative Consequences ◽  
Negative Outcomes ◽  
Work Systems ◽  
Work System ◽  
Alerting Systems

Summary Objectives: Previous research has shown that medication alerting systems face usability issues. There has been no previous attempt to systematically explore the consequences of usability flaws in such systems on users (i.e. usage problems) and work systems (i.e. negative outcomes). This paper aims at exploring and synthesizing the consequences of usability flaws in terms of usage problems and negative outcomes on the work system. Methods: A secondary analysis of 26 papers included in a prior systematic review of the usability flaws in medication alerting was performed. Usage problems and negative outcomes were extracted and sorted. Links between usability flaws, usage problems, and negative outcomes were also analyzed. Results: Poor usability generates a large variety of consequences. It impacts the user from a cognitive, behavioral, emotional, and attitudinal perspective. Ultimately, usability flaws have negative consequences on the workflow, the effectiveness of the technology, the medication management process, and, more importantly, patient safety. Only few complete pathways leading from usability flaws to negative outcomes were identified.Conclusion: Usability flaws in medication alerting systems impede users, and ultimately their work system, and negatively impact patient safety. Therefore, the usability dimension may act as a hidden explanatory variable that could explain, at least partly, the (absence of) intended outcomes of new technology.

Compressed Edge Spectrum Sensing: Extensions and practical considerations

2019 ◽  
Vol 67 (1) ◽  
pp. 51-59
Author(s):  
Edgar Beck ◽  
Carsten Bockelmann ◽  
Armin Dekorsy
Keyword(s):  
Wireless Communication ◽  
Spectrum Sensing ◽  
Industry 4.0 ◽  
Communication Systems ◽  
Sampling Rate ◽  
Wireless Communication Systems ◽  
Active Systems ◽  
Radio Systems ◽  
Edge Spectrum

Abstract Nowadays, spectrum in industrial radio systems is already overoccupied. Therefore, future Industry 4.0 applications require coexistence management of different wireless communication systems. For identification of active systems, we propose Compressed Edge Spectrum Sensing (CESS). Here, we focus on practical aspects and show that the sampling rate can still be highly reduced.

Digital radio – the fight for diffusion in Germany

Info ◽  
2014 ◽  
Vol 16 (5) ◽  
pp. 70-85 ◽  
Author(s):  
Juergen Steinheber
Keyword(s):  
Diffusion Of Innovation ◽  
Value Chain ◽  
New Technology ◽  
Digital Audio ◽  
Structured Interviews ◽  
Digital Radio ◽  
Content Type ◽  
Digital Audio Broadcasting ◽  
Radio Industry ◽  
Potential Diffusion

Purpose – The diffusion of digital radio has experienced more challenges than for digital TV regarding a digital switchover. The purpose of this paper shows on the specific case of Germany, which difficulties the digital sound broadcasting technology of Digital Audio Broadcasting (DAB) has been facing from several points of view. The difficulties are reviewed and outlined to overcoming different barriers and to facilitating its diffusion. Design/methodology/approach – The paper analyses how the diffusion of digital radio is perceived by industry representatives such as radio consultants and several stakeholders along the value chain of the radio industry. In semi-structured interviews, participants describe and evaluate the challenges for DAB as digital audio broadcasting standard mainly in Germany. Findings – After two decades of deploying digital radio in Germany, its success is still missing. Various very different aspects have prevented the diffusion of the new technology. Among various barriers, the radio industry sees missing benefits, marketing errors and a lack of inter-industrial collaboration as barriers in a retro-perspective. Research limitations/implications – The analysis does not cover other countries, where DAB as standard was introduced. Also other standards for digital radio are not considered. Practical implications – With referring to barriers for digital radio, there is a scope for those countries about to introduce the technology to troubleshoot the failings of overcoming barrier. An idea can emerge, how authorities and industrial stakeholders can help to facilitate the diffusion of digital radio. It also indicates the need of governmental interaction for the coordination of a technology introduction in a network industry. Social implications – The theoretical model, referred to, gives a good overview of potential diffusion barriers as most identified problems for the German case. The model and the illustrated problems of the paper can be used in practice to manage potential diffusion problems during technology introductions. Originality/value – There is a lack of published information about the faced challenges for the diffusion of digital radio. The retro-perspective benefits from the broad experience of participants having observed the challenges of the past decade with DAB in Germany. Additionally, the results are mapped to a theoretical framework with limits for the diffusion of innovation for generalising.

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