Instead of using a passive AC power grid for low power applications, this paper describes a smart plug for DC networks that is capable of providing the correct power to a device (up to 100W) and that allows for communication between different plugs and monitoring of energy consumption across the DC network using the Ethernet protocol in conjunction with a signal modulator to adapt the signals to the DC network. The ability to monitor consumption on a device-per-device basis allows for closer monitoring of in-house energy use and provides an easily scalable platform to monitor consumption at a macro level. In order to make this paper attractive for the consumer market and easily integrable with existing consumer devices, a generally compatible solution is needed. To meet these demands and to take advantage of the trend of charging consumer devices through USB, we opted for the recently adapted USB Power Delivery standard. This standard allows devices to communicate with the plug and demand a specific voltage and current needed for the device to operate. The purpose of this paper is to give the reader insight in the development of a proof of concept of the smart DC/DC power plug. 10.1109/DUE.2014.6827761
DOCUMENT
Deze publicatie is samengesteld door de werkgroep "Vonkerosie" van de vereniging FME-CWM en geeft gerichte theoretische en praktische informatie ten behoeve van respectievelijk de gebruikers van vonkerosiemachines, geïnteresseerden in vonkerosietechnieken, alsmede voor technische cursussen en opleidingen. Er bestaat een intensieve samenwerking met de "Contactgroep Fysisch Chemisch Bewerken (CFC)" van de Vereniging voor Produktietechniek - VPT. De inhoud van deze publicatie behandelt met name alle aspecten welke voor het vonkeroderen van belang zijn. Deze publicatie vervangt de voorlichtingspublicaties VM 76 "Zinkvonkerosie", VM 77 "Draadvonkerosie" en VM 79 "Numeriek bestuurd zinkvonken".
DOCUMENT
BACKGROUND: Non-use of and dissatisfaction with ankle foot orthoses (AFOs) occurs frequently. The objective of this study is to gain insight in the conversation during the intake and examination phase, from the clients’ perspective, at two levels: 1) the attention for the activities and the context in which these activities take place, and 2) the quality of the conversation. METHODOLOGY: Semi-structured interviews were performed with 12 AFO users within a two-week period following intake and examination. In these interviews, and subsequent data analysis, extra attention was paid to the needs and wishes of the user, the desired activities and the environments in which these activities take place. RESULTS AND CONCLUSION: Activities and environments were seldom inquired about or discussed during the intake and examination phase. Also, activities were not placed in the context of their specific environment. As a result, profundity lacks. Consequently, orthotists based their designs on a ‘reduced reality’ because important and valuable contextual information that might benefit prescription and design of assistive devices was missed. A model is presented for mapping user activities and user environments in a systematic way. The term ‘user practices’ is introduced to emphasise the concept of activities within a specific environment.
LINK
