Now showing items 1-17 of 17

    • Active bogies and chassis levelling for a vehicle operating in rough terrain 

      Pijuan Cases, Jordi; Comellas Andrés, Martí; Nogués Aymamí, Miquel; Roca Enrich, Joan; Potau, Xavi (Elsevier, 2012)
      Four axle vehicles with bogies can adapt the position of the wheels to follow irregularities in the terrain, having an obstacle surpassing ability far greater than conventional 2-axle vehicles. Still, the ability to ...
    • An embedded real-time red peach detection system based on an OV7670 camera, ARM Cortex-M4 processor and 3D Look-Up Tables 

      Teixidó Cairol, Mercè; Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Nogués Aymamí, Miquel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2012)
      This work proposes the development of an embedded real-time fruit detection system for future automatic fruit harvesting. The proposed embedded system is based on an ARM Cortex-M4 (STM32F407VGT6) processor and an Omnivision ...
    • Definition of linear color models in the RGB vector color space to detect red peaches in orchard images taken under natural illumination 

      Teixidó Cairol, Mercè; Font Calafell, Davinia; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Nogués Aymamí, Miquel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2012)
      This work proposes the detection of red peaches in orchard images based on the definition of different linear color models in the RGB vector color space. The classification and segmentation of the pixels of the image is ...
    • Desarrollo de un elemento oleoneumático para la suspensión posterior de Quads 

      Nogués Aymamí, Miquel; Roca Enrich, Joan; Potau, Xavi; Pijuan Cases, Jordi (AEIM, 2008)
      El artículo presenta el desarrollo de un elemento de suspensión oleoneumático compacto que pueda sustituir el sistema convencional de muelle y amortiguador en un vehículo de tipo Quad. Se ha desarrollado un modelo ...
    • Effect of internal heat recovery in ammonia-water absorption cooling cycles: exergy and structural analysis 

      Boer, Dieter; Gebreslassie, Berhane Hagos; Medrano Martorell, Marc; Nogués Aymamí, Miquel (International Centre for Applied Thermodynamics, 2009)
      First and second law analysis have been conducted for three low temperature driven ammonia-water absorption cooling cycles with increasing internal heat recovery. Based on the results of exergy analysis the structural ...
    • Efficiency sensitivity analysis of a hydrostatic transmission for an off-road multiple axle vehicle 

      Comellas Andrés, Martí; Pijuan Cases, Jordi; Potau, Xavi; Nogués Aymamí, Miquel; Roca Enrich, Joan (Springer Verlag, 2013)
      There is a large variety of multiple driven axle vehicles. Some of the most common are the 3-axle rigid vehicles and the 4-axle articulated vehicles, which can in some cases have different steering mechanisms, adaptive ...
    • Energetic and exergetic analysis of a domestic water tank with phase change material 

      Solé Cutrona, Cristian; Medrano Martorell, Marc; Castell, Albert; Nogués Aymamí, Miquel; Mehling, Harald; Cabeza, Luisa F. (John Wiley & Sons, 2008)
      Although water is a cheap and effective medium for thermal energy storage, other options are currently being studied, to increase the storage density or to reduce the cost of the storage. The authors have been developing ...
    • Exergy and structural analysis of an absorption cooling cycle and the effect of efficiency parameters 

      Boer, Dieter; Medrano Martorell, Marc; Nogués Aymamí, Miquel (International Centre for Applied Thermodynamics, 2005)
      Absorption cycles are an alternative to compression cycles in cooling and refrigeration applications. Our analysis of an absorption cycle is based on the exergy and the structural analysis. Once the exergy analysis has ...
    • Experimental evaluation of commercial heat exchangers for use as PCM thermal storage systems 

      Medrano Martorell, Marc; Yilmaz, M.O.; Nogués Aymamí, Miquel; Martorell, Ingrid; Roca Enrich, Joan; Cabeza, Luisa F. (Elsevier, 2009)
      Phase change materials (PCM) possess a great capacity of accumulation of energy in their temperature of fusion thanks to the latent heat. These materials are used in applications where it is necessary to store energy due ...
    • Experimentation with a water tank including a PCM module 

      Cabeza, Luisa F.; Ibáñez, Manuel; Solé Cutrona, Cristian; Roca Enrich, Joan; Nogués Aymamí, Miquel (Elsevier, 2006)
      Storage of heat is seen as a major issue for the development of solar energy for house heating and cooling under all climates. Most of the storage systems available on the market use water as the storage medium. The idea ...
    • Measuring oscillating walking paths with a LIDAR 

      Teixidó Cairol, Mercè; Pallejà Cabrè, Tomàs; Tresánchez Ribes, Marcel; Nogués Aymamí, Miquel; Palacín Roca, Jordi (Molecular Diversity Preservation International (MDPI), 2011)
      This work describes the analysis of different walking paths registered using a Light Detection And Ranging (LIDAR) laser range sensor in order to measure oscillating trajectories during unsupervised walking. The estimate ...
    • Modelization of a water tank including a PCM module 

      Ibáñez, Manuel; Cabeza, Luisa F.; Solé Cutrona, Cristian; Roca Enrich, Joan; Nogués Aymamí, Miquel (Elsevier, 2006)
      The reduction of CO2 emissions is a key component for today s governments. Therefore, implementation of more and more systems with renewable energies is necessary. Solar systems for single family houses or residential ...
    • Software para la mejora del aprendizaje del cálculo estructural en ingeniería y arquitectura.Programa Barras V-2.0, Universitat de Lleida 

      Bradineras, F. Javier; Castro Chicot, José Ramón; Iglesias Rodríguez, José María; Martorell, Ingrid; Nogués Aymamí, Miquel; Roca Enrich, Joan (CIDUI Congrés Internacional de Docència Universitària i Innovació, 2012)
      Actualmente, para abordar el cálculo estructural en la Universitat de Lleida existe software de uso profesional. Los dos grandes inconvenientes para aplicarlo como herramienta de docencia son, su alto coste económico y ...
    • Surgical dynamometer to simultaneously measure the tension forces and the distance between wound edges during the closure of a laparotomy 

      Roca Enrich, Joan; Nogués Aymamí, Miquel; Villalobos Mori, Rafael; Mias Carballal, Mª Carmen; Comellas Andrés, Martí; Gas Ruiz, Cristina; Olsina Kissler, Jorge Juan (MDPI, 2018)
      The closure of the abdominal wall after making a laparotomy is a major challenge for surgeons, since a significant percentage of closures fail and incisional hernias rise. The suture has to withstand the forces required ...
    • Thermal energy storage with phase change materials in building envelopes 

      Cabeza, Luisa F.; Medrano Martorell, Marc; Castellón, Cecilia; Castell, Albert; Solé, Cristian; Roca Enrich, Joan; Nogués Aymamí, Miquel (Institut d'Estudis Catalans. Secció de Ciències i Tecnologia, 2007)
      Els materials de canvi de fase (PCM) han estat considerats per a l’emmagatzematge tèrmic en edificis des de 1980. Amb la inclusió dels PCM en plaques de guix, guix, formigó o altres materials que s’utilitzen per a cobrir ...
    • Use of microencapsulated PCM in concrete walls for energy savings 

      Cabeza, Luisa F.; Castellón, Cecilia; Nogués Aymamí, Miquel; Medrano Martorell, Marc; Leppers, Ron; Zubillaga, Oihana (Elsevier, 2007)
      This paper studies a new innovative concrete with phase change materials (PCM) on thermal aspects. The final objective is to develop a product which would achieve important energy savings in buildings. The work here ...
    • Utilization of phase change materials in solar domestic hot water systems 

      Mazman, Muhsin; Cabeza, Luisa F.; Mehling, Harald; Nogués Aymamí, Miquel; Evliya, Hunay; Paksoy, Halime Ö. (Elsevier, 2009)
      Thermal energy storage systems which keep warm and cold water separated by means of gravitational stratification have been found to be attractive in low and medium temperature thermal storage applications due to their ...