Dynamic autonomous set-up of relays in Bluetooth mesh

BLE-based mesh networks are based on a simple flooding algorithm with some mechanisms to reduce network saturation, called managed flooding. The operating parameters of the network establish its performance, but in an industrial environment the operating conditions are not permanent, so a system that can adjust to these changes is necessary. A global decision system is not valid since each part of the network may have different properties. An autonomous system that does not introduce an overhead of message exchange is necessary for its operation. This paper proposes an algorithm based on the information provided by a single control message exchange that allows each node to autonomously select its operating parameters to improve the quality of links with neighbouring nodes and thus improve the overall performance of the network

Integrated sensor and management system for urban waste water networks and prevention of critical situations

[EN] This work describes the design and implementation of improvements to the monitoring system of an urban waste water network, resulting in more efficient management of the system. To achieve this objective, the latest communications technology has been incorporated into heterogeneous networks and sensor systems. This technology includes mobile systems, which take measurements and transmit images in real time, an intelligent platform for processing and management of variables, and the implementation of wireless sensor networks (WSNs) designed with specific protocols and tools that allow the rapid deployment of the network and allow measurements to be taken in emergency situations. The sensors in this type of installation are extremely important for the management of the system as they allow us to collect information and make decisions with sufficient time to deal effectively with critical situations such as flooding or overloading of the waste water system, or environmental problems such as dumping of possible pollutants, as well as to make the best use of the water cycle. The solution presented here automates large portions of the processes, minimizing the possibility of human error, and increasing the frequency and accuracy of the measurements taken, ensuring a robust communication system covering all the elements involved to provide ubiquity of information, and finally gives an application layer to manage the system and receive alerts. © 2011 Elsevier Ltd.This work was supported by the MCyT (Spanish Ministry of Science and Technology) under the projects PET2007-0316 and TIN2010-21378-C02-02, which are partially funded by ERDF (European Regional Development Fund).Sempere Paya, VM.; Santonja Climent, S. (2012). Integrated sensor and management system for urban waste water networks and prevention of critical situations. Computers, Environment and Urban Systems. 36(1):65-80. https://doi.org/10.1016/j.compenvurbsys.2011.07.001S658036

Contribution to the problem of ageing of cold-rolled sheet and strip of mild unkilled steel

20.00; Translated from German (Hochschule Leoben 1984 (6) p. 425-434)SIGLEAvailable from British Library Document Supply Centre- DSC:9022.06(BISI--24007)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Activity monitoring of employees working on large premises

In this paper we expose our present work on a real-time monitoring system of human activities, using only a single cell phone equipped with some particular sensors. This way the monitoring system is reduced to the minimum expression, no especial hardware is required as far as a conventional cell phone will monitor the user. In particular, we expose our progress on a monitoring system devoted to supervising employee’s work on large premises, detecting abnormal behaviours, hazardous situations and managing the corresponding alert procedures

Low temperature phonon-drag thermolelectric power calculations in GaAs/GaAlAs heterojunctions and Si MOSFETs

SIGLEAvailable from British Library Document Supply Centre- DSC:D90765 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

The demands of small heat meters

Translated from German (Fernwaerme Int. 1986 v. 15(5) p. 328-335)Available from British Library Document Supply Centre- DSC:9022.0481(BG-MRS-Trans--15183)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo