Universidad de Alcalá-OTRI posted this:Systems and applications based on indoor positioning via led-lightingThe use of LED lamps available for lighting of different parts of a building or room in such a way as to allow the transmission of very high-frequency codes non-perceptible by humans together with the illumination lights. These codes (one unique code for each LED lamp) will be decoded by light detectors included in smart-devices, or by detectors designed particularly for this purpose. From the code information, the device positioning can be determined with high precision.
Universidad de Alcalá-OTRI posted this:Efficient sensing techniques for smart city applicationsThe city of the 21st century demands a set of digital services that provide citizens with improved access to resources such as transport, education, health care, energy, safety, and the environment. Giving intelligence to these services means having an extensive network of sensors and the management of information supported by the Internet of things (IoT). Wireless sensor networks present two major challenges: efficient communication and energy autonomy. Event-based sensing techniques help to optimize both by analyzing the information registered in the sensor and making it available to the network only when necessary. In the GEINTRA group, we have experience in event-based sensing techniques and their application to the field of Smart Cities.
INESC TEC posted this:a single-stage, bidirectional and high-frequency isolated power conversion systemACDC Cube is a single-stage, bidirectional and high-frequency isolated power conversion system. ACDC Cube also uses a novel control method to do the interface between the Alternate Current (AC) distribution networks and a battery pack, or other Direct Current (DC) sources/loads, delivering higher power quality in a compact design. ACDC Cube has lower total volume and weight, increased durability and equivalent reliability when compared with a standard solution such as the voltage source converter plus dual active bridge. Due to its innovative features, ACDC Cube is especially suitable for applications where the size of the power conversion system is critical.
Universidad de Alcalá-OTRI posted this:Risk management of the effects of solar activity: Device and procedure of obtaining in real time and high resolution, the Local Geomagnetic Disturbance at middle latitudes.The research team specialized in Space Meteorology within the Space Research Group of the University of Alcalá, has developed a device and procedure that, based on the measurement of the local geomagnetic field, is able to estimate the magnetic disturbance component associated to solar activity at middle latitudes. The determination of the magnetic disturbance component is especially relevant in cases of sporadic but explosive solar phenomena. From the perspective of the actual user, the present invention constitutes an essential element in the risk management of the effects of solar activity on vulnerable technologies, both ground-based and satellite-based (electric power, rail transport, terrestrial and positioning navigation systems, radio and satellite communication systems ...), increasing the capacities of public administrations, civil protection and emergencies and the companies themselves, in order to prepare a successful strategy for adverse conditions related to the solar activity. The group is looking for collaboration and/or commercial agreements with the Central Administration, Civil Protection, Critical Infrastructure, Electric Power companies, Rail Network, Oil pipelines companies, Gas Pipelines companies, Insurance firms, etc...
DIT Hothouse posted this:Wind Urchin: A 3D Spherical AnemometerThe Wind Urchin is a novel instrument for the simultaneous measurement of wind speed, direction and turbulence. It is effectively a multidirectional anemometer which uses multiple Pitot tubes incorporated into a unique spherical design to provide simultaneous real-time data on all elements of wind and uniquely turbulence.
DIT Hothouse posted this:UPQC: A Device for Power Quality EnhancementUPQC (Universal Power Quality Conditioner) allows optimal control of a power electronics-based conditioner. Comprising both shunt and series elements (inverters), UPQC compensates for sags and swells, unbalance and distortion (harmonics)in the supply current and supply voltage respectively. UPQC delivers cost savings, increased reliability and enhanced electrical power network functionality. It also employs modular control software and novel techniques for load side short circuit protection of series inverters.