IoT applications utilizing excess heat in electrical lighting fixtures

The development of IoT instrumentation will always be strongly influenced by the properties of the power supply system. A large number of IoT nodes creates a danger of extra expenditures when changing the battery. For this reason, the development of supply nodes tends to prefer systems capable of battery-less operation, obtaining energy from other sources. This article deals with an alternative method of electrical energy acquisition form the excessive heat appearing in LED lighting fixtures utilizing large-area LED chips. A Peltier cell was used for the conversion of heat energy to electrical energy, connected as thermo-electric generator into the thermal chain

A design influence on the mechanical compliance and fracture resistance of railway wheel

A fracture mechanics approach is used to determinate crack behaviour in a railway wheel which is working under different operating conditions with consideration of different types of railway wheel discs. Reliability of the railway wheel is related to a material failure. This paper is focused on failure of the material which is connected with violation consistency of the wheel material. The fracture mechanic approach is applied with consideration of influence of mechanical compliance. The topology optimization is used to define the shape of one disc type. Obtained results show fracture behaviour and the mechanical compliance of used railway wheel discs. From these results, comparison of separated railway wheel discs is obtained

Effects Affecting BGA Soldering

This paper deals with effects, which can affect solder joints quality. It also evaluates experiments which were made. These experiments were connected with fluxes problematic. First there are mentioned effects connected with amount of flux, and then experiments were focused to ways of applying the flux. Next steps are mentioned at the end of the paper

Energy consumption optimization for thermal energy harvester applications

This paper demonstrates the concept of node consumption reduction for IoT applications. The main emphasis is placed on the autonomy of the whole device, which must be independent of external power supply. That is why energy harvesting based on temperature principle is used for power supply. One of the parameters monitored is the service uptime. The concept of intelligent control of the individual parts of the equipment leads to significant energy savings. This control requires the use of low power components, but only their appropriate connection and mutual monitoring of their operating modes leads to the desired savings. This algorithm can be adapted to the needs of IoT nodes focused on real-time performance applications or the process tracking slow low power applications. This concept will ultimately be adapted to a wireless node for monitoring position and temperature for use in medical applications to monitor the patient's position on the bed or position while moving

IoT applications utilizing excess heat in electrical lighting fixtures

Vývoj IoT zařízení bude vždy silně ovlivněn možnostmi napájení systému. Značný počet uzlů IoT (node) vytváří nebezpečí dodatečných nákladů při výměně baterii. Z tohoto důvodu se vývoj napájení uzlů zaměřuje na zařízení, která mohou pracovat bez baterie a energii získávají z jiných zdrojů. Tento článek se zaměřuje na alternativní získání elektrické energie z odpadního tepla vznikajícího při provozu LED svítidel obsahující velkoplošné LED čipy. Pro konverzi odpadní tepelné energie na elektrickou energii je využit Peltiérův článek zapojený ve funkci termogenerátoru do teplotního řetězce.The development of IoT instrumentation will always be strongly influenced by the properties of the power supply system. A large number of IoT nodes creates a danger of extra expenditures when changing the battery. For this reason, the development of supply nodes tends to prefer systems capable of battery-less operation, obtaining energy from other sources. This article deals with an alternative method of electrical energy acquisition form the excessive heat appearing in LED lighting fixtures utilizing large-area LED chips. A Peltier cell was used for the conversion of heat energy to electrical energy, connected as thermo-electric generator into the thermal chain

Robot George - Interactive Continuous Learning of Visual Concepts

Abstract-The video presents the robot George learning visual concepts in dialogue with a tutor

Experience in System Design for Human-Robot Teaming in Urban Search and Rescue

The paper describes experience with applying a user-centric design methodology in developing systems for human-robot teaming in Urban Search and Rescue. A human-robot team consists of several semi-autonomous robots (rovers/UGVs, microcopter/UAVs), several humans at an off-site command post (mission commander, UGV operators) and one on-site human (UAV operator). This system has been developed in close cooperation with several rescue organizations, and has been deployed in a real-life tunnel accident use case. The human-robot team jointly explores an accident site, communicating using a multi-modal team interface, and spoken dialogue. The paper describes the development of this complex socio-technical system per se, as well as recent experience in evaluating the performance of this system