Listar por autor "Castellanos-Ramos, Julián"
Mostrando ítems 1-20 de 28
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A large area tactile sensor patch based on commercial force sensors
Barquero, María José; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio
; Serón-Barba, Javier; Vidal-Verdú, Fernando; Navas-González, Rafael Jesús; García-Cerezo, Alfonso José[et al.] (MDPI, 2011)
This paper reports the design of a tactile sensor patch to cover large areas of robots and machines that interact with human beings. Many devices have been proposed to meet such a demand. These realizations are mostly ... -
Adding Proximity Sensing Capability to Tactile Array Based on Off-the-Shelf FSR and PSoC
Castellanos-Ramos, Julián; Trujillo-León, Andrés; Navas-González, Rafael Jesús; Barbero-Recio, Francisco; Sánchez-Durán, José Antonio; Oballe-Peinado, Óscar; Vidal-Verdú, Fernando[et al.] (IEEE, 2020)
Tactile sensors have been incorporated into robots to help in many tasks, such as preventing damage to humans in collaborative works or assistance or in dexterous manipulation. Proximity sensors are also common in robotics ... -
An estimation of triaxial forces from normal stress tactile sensor arrays
Pinto-Salamanca, María L.; Castellanos-Ramos, Julián; Pérez-Holguín, Wilson J.; Hidalgo-López, José Antonio (Elsevier, 2023-10-04)
This work proposes a new method to find an optimal solution of the inverse problem of the Boussinesq equation for ill-posed problems, applicable in the reconstruction of triaxial forces for processing contact data in tactile ... -
Assistive Handlebar Based on Load Cells as Attendant Steering Device
Trujillo-León, Andrés; Sánchez-Sánchez, Cristina; Castellanos-Ramos, Julián; Vidal-Verdú, Fernando (IEEE, 2018)
The increase in the life expectancy has pushed the interest in developing assistive technologies to extend the autonomy of the elderly. Mobility is a major concern for this population, and aids should be designed to be ... -
Assistive handlebar based on tactile sensors: control inputs and human factors
Trujillo-León, Andrés; Bachta, Wael; Castellanos-Ramos, Julián; Vidal-Verdú, Fernando (Sensors, MDPI, 2018)
Tactile sensors can be used to build human-machine interfaces, for instance in isometric joysticks or handlebars. When used as input sensor device for control, questions arise related to the contact with the human, which ... -
Caracterización, Modelado y Diseño de Sensores Táctiles Piezorresistivos
(Servicio de Publicaciones y Divulgación Científica, 2016)Un sensor táctil es un dispositivo con el que se obtiene información del entorno mediante el contacto con él. Su implementación se basa en distribuir una serie de unidades sensoriales de fuerza, a las que denominamos ... -
Creep and Hysteresis Compensation in Pressure-Sensitive Mats for Improving Center-of-Pressure Measurements
Martínez-Cesteros, Javier; Medrano-Sánchez, Carlos; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio; Plaza-García, Inmaculada; martinez cesteros[et al.] (IEEE, 2023)
Large-area tactile sensors are used to image the pressure exerted by human body parts. More specifically, they can be used to measure plantar pressure on human stability tests. The center-of-pressure (CoP) trajectory is ... -
Direct interfaces for smart skins based on FPGAs
Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Hidalgo-López, José Antonio; Vidal-Verdú, Fernando (SPIE digital library, 2009)
Many artificial skins for robotics are based on piezoresistive films that cover an array of electrodes. Local preprocess- ing is a must in these systems to reduce errors and interferences and cope with the large amount of ... -
Equilibration device for tactile sensors on curved surfaces
Castellanos-Ramos, Julián; Carrasco-García, Álvaro; Navas-González, Rafael Jesús; Trujillo-León, Andrés; Vidal-Verdú, Fernando (IEEE, 2017)
Tactile sensors are arrays of force sensing units called taxels and equilibration is necessary to normalize their response. This is commonly done by applying uniform pressure while the sensor lies on a flat surface. However, ... -
Finite element analysis of tactile sensors made with screen printing technology.
Castellanos-Ramos, Julián; Navas-González, Rafael Jesús; Ochoteco, Estíbalitz; Vidal-Verdú, Fernando (SPIE digital library, 2011)
Tactile sensors have increasing presence in different applications, especially in assistive robotics or medicine and rehabilitation. They are basically an array of force sensors (tactels) and they are intended to emulate ... -
FPGA-Based Tactile Sensor Suite Electronics for Real-Time Embedded Processing
Oballe-Peinado, Óscar; Hidalgo-López, José Antonio; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio; Navas-González, Rafael Jesús; Herrán, Jaime; Vidal-Verdú, Fernando[et al.] (IEEE, 2017)
Dexterity in robotic hands is not enough to cover the demands for more flexibility in the manufacturing process. Specifically, processes that involve cooperation or learning from humans, slippage detection and tactile ... -
High-Accuracy Readout Electronics for Piezoresistive Tactile Sensors
Hidalgo-López, José Antonio; Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio; Fernández-Ramos, Raquel Natividad; Vidal-Verdú, Fernando[et al.] (MDPI, 2017)
The typical layout in a piezoresistive tactile sensor arranges individual sensors to form an array with M rows and N columns. While this layout reduces the wiring involved, it does not allow the values of the sensor resistors ... -
Hysteresis correction of tactile sensor response with a generalized Prandtl–Ishlinskii model
Sánchez-Durán, José Antonio; Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Vidal-Verdú, Fernando (Springer-Verlag, 2012)
Tactile sensors are basically arrays of force sensors. Most of these force sensors are made of polymers or conductive rubber to lower cost, especially in the case of large area low-medium resolution tactile sensors. The ... -
Influence of Errors in Tactile Sensors on Some High Level Parameters Used for Manipulation with Robotic Hands
Sánchez-Durán, José Antonio; Hidalgo-López, José Antonio; Castellanos-Ramos, Julián; Oballe-Peinado, Óscar; Vidal-Verdú, Fernando (MDPI, 2015)
Tactile sensors suffer from many types of interference and errors like crosstalk, non-linearity, drift or hysteresis, therefore calibration should be carried out to compensate for these deviations. However, this procedure ... -
Insights into the Mechanical Behaviour of a Layered Flexible Tactile Sensor
Castellanos-Ramos, Julián; Navas-González, Rafael Jesús; Fernández, Iván; Vidal-Verdú, Fernando (MDPI Open Access Journal, 2015)
This paper shows realizations of a piezoresistive tactile sensor with a low cost screen-printing technology. A few samples were fabricated for different materials used as insulator between the conductive layers and as top ... -
Interface for tactile sensors based on direct connection to a FPGA
Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Hidalgo-López, José Antonio; Vidal-Verdú, Fernando; Macicior, Haritz; Ochoteco, Estíbalitz[et al.] (IEEE, 2009)
Many artificial skins for robotics are based on piezoresistive films that cover an array of electrodes. Local preprocess- ing is a must in these systems to reduce errors and interferences and cope with the large amount of ... -
Mejora de un laboratorio remoto de Electrónica Digital mediante el uso de una Raspberry Pi 4
Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio; Navas-González, Rafael Jesús; Hidalgo-López, José Antonio (Asociación TAEE, 2022-07)
Tras la puesta en marcha de una primera versión de un laboratorio remoto de Electrónica Digital, surgen nuevas necesidades y mejoras, sobre todo en términos de escalabilidad y de nuevos periféricos. En este trabajo se ... -
pHRI Gripper with Pressure Sensing.
Lara, Francisco; Castellanos-Ramos, Julián; Trujillo-León, Andrés; Urdiales-García, Amalia Cristina; Benavides, Jorge L.; Gómez-de-Gabriel, Jesús Manuel[et al.] (Springer Nature, 2023)
Physical Human-Robot Interaction (pHRI) is essential for robots that establish contact with humans, like assistive or rescue robots. pHRI demands hard safety and compliance constraints. Tactile sensing is vital for pHRI, ... -
Prácticas de Electrónica Digital para un Laboratorio Remoto Basado en FPGA
Navas-González, Rafael Jesús; Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Sánchez-Durán, José Antonio; Rosas-Cervantes, Daniel (Organizadores TAEE22, 2022-06)
Este trabajo presenta ejemplos de prácticas de Electrónica Digital propuestas como proyectos de diseño para FPGA que pueden ser depurados y/o testados indistintamente en el laboratorio del centro, o bien “on-line” ... -
Practice Projects for an FPGA-Based Remote Laboratory to Teach and Learn Digital Electronics
Navas-González, Rafael Jesús; Oballe-Peinado, Óscar; Castellanos-Ramos, Julián; Rosas-Cervantes, Daniel; Sánchez-Durán, José Antonio (MDPI, 2023-10-12)
This work presents examples of practice sessions to teach and learn digital electronics using an FPGA-based development platform, accessible either through the on-campus laboratory or online using a remote laboratory ...