15 research outputs found

    Heterogeneous Collaborative Sensor Network for Electrical Management of an Automated House with PV Energy

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    In this paper we present a heterogeneous collaborative sensor network for electrical management in the residential sector. Improving demand-side management is very important in distributed energy generation applications. Sensing and control are the foundations of the “Smart Grid” which is the future of large-scale energy management. The system presented in this paper has been developed on a self-sufficient solar house called “MagicBox” equipped with grid connection, PV generation, lead-acid batteries, controllable appliances and smart metering. Therefore, there is a large number of energy variables to be monitored that allow us to precisely manage the energy performance of the house by means of collaborative sensors. The experimental results, performed on a real house, demonstrate the feasibility of the proposed collaborative system to reduce the consumption of electrical power and to increase energy efficiency

    Quantitative assessment based on kinematic measures of functional impairments during upper extremity movements: a review

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    Quantitative measures of human movement quality are important for discriminating healthy and pathological conditions and for expressing the outcomes and clinically important changes in subjects' functional state. However the most frequently used instruments for the upper extremity functional assessment are clinical scales, that previously have been standardized and validated, but have a high subjective component depending on the observer who scores the test. But they are not enough to assess motor strategies used during movements, and their use in combination with other more objective measures is necessary. The objective of the present review is to provide an overview on objective metrics found in literature with the aim of quantifying the upper extremity performance during functional tasks, regardless of the equipment or system used for registering kinematic data

    Stability and smoothness improvements for an underactuated biped with a tail

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    In this work we present an important improvement in our model of biped mechanism that allows the elevation in a stable form of the system's feet during the execution of trajectories. This improvement allows for simpler trajectory planning and also facilitates the reduction of losses in the collision between the feet and the ground. On the other hand, we add to the design phase the study of the displacement of the Zero Moment Point, as well as the variation of the normal component of the ground reaction force during the motion of the system. Consideration of the above mentioned magnitudes in the design phase allows us to design the necessary support area of the system. These magnitudes will be used as a smoothness criterion of the ground contact to facilitate the selection of robot parameters and trajectories.Sin financiación0.195 SJR (2007) Q3, 109/263 Control and systems engineering, 374/882 Electrical and electronic engineeringUE

    de Madrid

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    A development vision system is described in this paper. It contains an ALTERA FPGA (20K100), an interface with a digital camera, three VRAM memories to contain the data input and some output memories (a VRAM and a EDO) to contain the results. The aim of this system is to develop and test vision algorithms, such as image compression, optical flow calculation with differential and correlation methods and applications that use previous calculated optical flow, like image invariants detection. The designed system is able to connect the digital camera, or the FPGA output (results of algorithms) to a PC, through its parallel port or USB port. It also has an expansion connector to make possible the expansion of the system, with some elements of the process, for instance one system would calculate the optical flow of the input images and another system would calculate the focus of expansion in the image and the time to impact in the scene. 1

    Open E-puck range & bearing miniaturized board for local communication in swarm robotics

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    SCOPUS: cp.pinfo:eu-repo/semantics/publishe
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