0000000001193633
AUTHOR
Alfredo Rosado Muñoz
An Industrial Automation Course: Common Infrastructure for Physical, Virtual and Remote Laboratories for PLC Programming
<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: DE; mso-bidi-language: AR-SA;">This work describes the development of a teaching strategy to leverage current simulation tools and promote learning of industrial automation systems. Specifically, Programmable Logic Controller (PLC) programming in an industrial automation course. We propose an infrastructure where it is possible to work with physical, virtual and mixed laboratories</span>
Analysis of spatial and temporal evolution of regularity maps during ventricular fibrillation
The analysis of cardiac mapping allows investigating the structure of ventricular fibrillation (VF). This work analyzes regions of interest (ROI) on cardiac maps obtained from the regularity analysis of VF records, providing information about signal regularity at each time instant and its spatial distribution. Cardiac registers were obtained using a 240- electrodes matrix located on left ventricle of isolated rabbit heart. A Langendorff system was used to maintain the heart perfusion. VF was induced by increased frequencies. Two groups of records were considered: control (G1: without physical training, N=10), and trained (G2, N=9). Records were processed in consecutive 4-second segments. Re…
Modifications on regularity and spectrum of ventricular fibrillation signal induced by physical training
The objective of this work is to study the modifications on cardiac response during ventricular fibrillation (VF) induced by physical training. The analysis was performed in the frequency domain of VF, and the regularity of the signal was also considered. Two sets of records were acquired: control (G1: without physical training, N=10), and trained (G2, N=9). Cardiac registers were obtained using a 240-electrodes matrix located on left ventricle of isolated rabbit heart. A Langendorff system was used to maintain the heart perfusion. VF was induced by increased frequencies. To analyze the time course of VF, records were processed in 4-second segments. For every segment and channel, Welch peri…
Developing an orientation and cutting point determination algorithm for a trout fish processing system using machine vision
Abstract Fish processing in small and medium fish supplying centers requires an intelligent system to operate on different sizes. Therefore, an image processing algorithm was developed to extract the proper head and belly cutting points according to the trout dimensions. The algorithm detects the fish orientation and location of pectoral, anal, pelvic, and caudal fins. In this study, each of the trout images was divided into slices along its length in order to segment the fins and extract cutting points. The channel ‘B’ of RGB color space was considered in both initial segmentation and fin detection stages among the examined channels of RGB, HSV, and L*a*b* color spaces. The back-belly and …
Herramienta e-learning para la programación de robots mediante entorno web
Este artículo describe los trabajos realizados para permitir a los estudiantes de diversas titulaciones de ingeniería la realización de prácticas a distancia en un laboratorio remoto desde un navegador web. Este hecho posibilita utilizar aparatos y maquinaria a distancia (inicialmente un robot industrial), pudiendo programarlos y visualizar el resultado de la programación realizada en tiempo real así como interactuar con la máquina. Adicionalmente, se propone al estudiante la realización de un curso de programación mediante diversas prácticas que debe realizar y el sistema web autoevalúa. Este trabajo ha requerido la integración de diversos elementos hardware y software
Relación entre el espectro y la regularidad en la señal de fibrilación ventricular modificada por el ejercicio físico
El presente trabajo estudia las modificaciones intrínsecas que el ejercicio físico produce en la respuesta cardíaca durante la FV. Se han calculado dos parámetros relacionados con el espectro de la señal (FD: frecuencia dominante, y EN: energía normalizada), y otro relacionado con la regularidad de las OAL (IR: índice de regularidad), Se ha realizado un análisis de correlación entre los tres parámetros para valorar su grado de complementariedad. Se consideraron dos grupos de conejos: control (G1: sin entrenamiento, N=10) y entrenados (G2, N=9). Se utilizó un electrodo matricial de 240 canales localizado en ventrículo izquierdo de corazón aislado de conejo perfundido mediante un sistema de L…
Selection of the Optimal Algorithm for Real-Time Estimation of Beta Band Power during DBS Surgeries in Patients with Parkinson's Disease
Deep Brain Stimulation (DBS) is a surgical procedure for the treatment of motor disorders in patients with Parkinson’s Disease (PD). DBS involves the application of controlled electrical stimuli to a given brain structure. The implantation of the electrodes for DBS is performed by a minimally invasive stereotactic surgery where neuroimaging and microelectrode recordings (MER) are used to locate the target brain structure. The Subthalamic Nucleus (STN) is often chosen for the implantation of stimulation electrodes in DBS therapy. During the surgery, an intraoperative validation is performed to locate the dorsolateral region of STN. Patients with PD reveal a high power in the β band (frequenc…
FPGA-based embedded Logic Controllers
In general case, reconfigurable logic controllers (RLC) are included into reactive digital embedded systems, carrying out control for several processes proceeding concurrently. The paper presents a practical application of a formal, rule-based specification language in Gentzen sequent logic, which is used as an intermediate textual description of a control interpreted Petri net. On the other hand exactly the same description serves also as logic design expressions, related with different versions of functionally equivalent concurrent state machine models, considered on Register Transfer Level. The symbolic rule-based specification of Petri net-based embedded Logic Controllers (LCs) can be s…
Evaluation of image processing technique as an expert system in mulberry fruit grading based on ripeness level using artificial neural networks (ANNs) and support vector machine (SVM)
Abstract Image processing and artificial intelligence (AI) techniques have been applied to analyze, evaluate and classify mulberry fruit according to their ripeness (unripe, ripe, and overripe). A total of 577 mulberries were graded by an expert and the images were captured by an imaging system. Then, the geometrical properties, color, and texture characteristics of each segmented mulberry was extracted using two feature reduction methods: Correlation-based Feature Selection subset (CFS) and Consistency subset (CONS). Artificial Neural Networks (ANN) and Support Vector Machine (SVM) were applied to classify mulberry fruit. ANN classification with the CFS subset feature extraction method res…
Remote, web-based laboratory for Programmable Logic Devices
Abstract This work proposes a web-based laboratory for remotely testing FPGA programs on an evaluation board. Using a web browser, the user can download a device configuration file (previously generated with the FPGA commercial tool) and test it in a real FPGA board located in a remote laboratory at the University facilities. The user can control inputs and check outputs’ state. This preliminary study tries to evaluate the possibilities that can be offered to the user, and the restrictions that might apply. Additionally, it describes the proposed infrastructure (hardware and software) needed to successfully deal with all the interesting features that a remote lab system for programmable log…
Automatic screening of cardiac disorders using wavelet analysis of heart sound
Body auscultation is a dominant method for physical examination of human heart using conventional stethoscope. This clinical method is non invasive and efficient but it requires a medical expert to interpret the heart sound for assessment of cardiac disorders. This paper presents analysis of heart sounds in wavelet domain for automated screening of cardiac disorders. Heart sound signal is transformed in wavelet domain to find out discrimination between heart sounds recorded from healthy and anomalous patients. Discriminatory features extracted from wavelet coefficients of heart sound are subjected to machine learning for screening of cardiac disorders automatically. The proposed method for …
Statechart-based design controllers for FPGA partial reconfiguration
Statechart diagram and UML technique can be a vital part of early conceptual modeling. At the present time there is no much support in hardware design methodologies for reconfiguration features of reprogrammable devices. Authors try to bridge the gap between imprecise UML model and formal HDL description. The key concept in author's proposal is to describe the behavior of the digital controller by statechart diagrams and to map some parts of the behavior into reprogrammable logic by means of group of states which forms sequential automaton. The whole process is illustrated by the example with experimental results.
Aprendizaje por Proyectos: Una Aproximación Docente al Diseño Digital Basado en VHDL
Abstract-- Digital design based on hardware description languages is difficult for students, especially when the course covers from basics to advanced design systems and hardware implementation topics. This paper describes the proposal of a course where students have basic knowledge in digital design but null knowledge in hardware description languages as VHDL and FPGA (Field Programmable Gate Array) devices. Using Project Based Learning (PBL), this proposal allows increasing the learning curve, improving motivation and achieving some of the indications given by the European High Education Area (EHEA).
A Novel Approach of a Low-Cost UWB Microwave Imaging System with High Resolution Based on SAR and a New Fast Reconstruction Algorithm for Early-Stage Breast Cancer Detection.
In this article, a new efficient and robust approach—the high-resolution microwave imaging system—for early breast cancer diagnosis is presented. The core concept of the proposed approach is to employ a combination of a newly proposed delay-and-sum (DAS) algorithm and the specific absorption rate (SAR) parameter to provide high image quality of breast tumors, along with fast image processing. The new algorithm enhances the tumor response by altering the parameter referring to the distance between the antenna and the tumor in the conventional DAS matrices. This adjustment entails a much clearer reconstructed image with short processing time. To achieve these aims, a high directional Vivaldi …
From UML Specification into FPGA Implementation
In the paper a method of using the Unified Modeling Language for specification of digital systems, especially logic controllers, is presented. The proposed method is based mainly on the UML state machine di- agrams and uses Hierarchical Concurrent Finite State Machines (HCFSMs) as a temporary model. The paper shows a way to transform the UML diagrams, expressed in XML language, to the form that is acceptable by reconfigurable FPGAs (Field Programmable Gate Ar- rays). The UML specification is used to generate an eective program in Hardware Description Languages (HDLs), especially Verilog.
Design and Simulation of a Vision-Based Automatic Trout Fish-Processing Robot
Today, industrial automation is being applied in a wide range of fields. The initial modeling of robots and mechanical systems together with simulation results in optimal systems. In this study, the designed system is simulated to obtain the required velocities, accelerations and torques of the actuating arms in a vision-based automatic system. Due to the slippery skin of fish and the low friction coefficient, it is not easy to design an optimal tool to handle fish. Since the fish-processing operation is undertaken step by step and provides fish stability, it is essential that the gripper enables different processing operations along the system. The proposed system performs belly-cutting, b…
Ventricular Fibrillation detection using time-frequency and the KNN classifier without parameter extraction
[ES] Este trabajo propone la detección de FV y su discriminación de TV y otros ritmos cardiacos basándose en la representación tiempo-frecuencia del ECG y su conversión en imágen como entrada a un clasificador de vecinos más cercanos (KNN) sin necesidad de extracción de parámetros adicionales. Tres variantes de datos de entrada al clasificador son evaluados. Los resultados clasifican la señal en cuatro clases diferentes: ’Normal’ para latidos con ritmo sinusal, ’FV’ para fibrilación ventricular, ’TV’ para taquicardia ventricular y ’Otros’ para el resto de ritmos. Los resultados para detección de FV mostraron 88,27% de sensibilidad y 98,22% de especificidad para la entrada de imágen equivale…
Herramienta <em> e-learning </em>para la programación de robots mediante entorno web
Este articulo describe los trabajos realizados para permitir a los estudiantes de diversas titulaciones de ingenieria la realizacion de practicas a distancia en un laboratorio remoto desde un navegador web. Este hecho posibilita utilizar aparatos y maquinaria a distancia (inicialmente un robot industrial), pudiendo programarlos y visualizar el resultado de la programacion realizada en tiempo real asi como interactuar con la maquina. Adicionalmente, se propone al estudiante la realizacion de un curso de programacion mediante diversas practicas que debe realizar y el sistema web autoevalua. Este trabajo ha requerido la integracion de diversos elementos hardware y software
Análisis del efecto del tipo de captación en registros de mapeado cardíaco de fibrilación ventricular
El presente trabajo estudia la influencia del tipo de captación (bipolar con orientaciones diferentes y unipolar) en registros de mapeado cardíaco durante fibrilación ventricular (FV). Se ha calculado un parámetro relacionado con la regularidad de la señal, el número de ocurrencias (NO), y se ha aplicado a dos grupos de conejos: control (GC: sin entrenamiento físico, N=10) y entrenados (GE, N=11). Se utilizó un electrodo matricial de 240 canales unipolares, a partir de los cuales se obtuvieron los correspondientes bipolares (bipolar1: diferencias por filas de canales unipolares, bipolar2: diferencias por columnas). El electrodo se localizó en ventrículo izquierdo de corazón aislado y prefun…
Práctica 0. Introducción a la aplicación y el entorno.
Inicial practice proposal. This guide allows the users to get familiar with the robot programming language (RAPID) and the Labserver web system (http://labserver.uv.es) Práctica inicial. Guión de prácticas propuesto a los usuarios para comenzar a familiarizarse con la programación del robot y la plataforma web Labserver (http://labserver.uv.es)
Manual de programación para lenguaje RAPID
Guía de programación RAPID. Este documento detalla las diversas instrucciones que se pueden utilizar para programar el robot utilizado para las prácticas docentes RAPID language guide. This documents describes basic instructions for robot programming for the learning process
Practica Libre
Práctica Libre. Describe las indicaciones generales para poder realizar cualquier práctica que se desee desarrollar con la plataforma labserver Free practice. This guide describes the usage of labserver platform for deploying different applications.
Práctica 2. Movimientos Circulares
Práctica 2. Propone la utilización de instrucciones que permiten realizar movimientos circulares Practice proposal 2. This guide introduces the user to circular robot movements
Práctica 5. Paletizado virtual
Práctica 5. Segundo ejemplo completo de una aplicación industrial de paletizado Practice proposal 5. Second example of a complete industrial application, palletizing in this case.
Guías prácticas para la programación de robots
Documento que describe cómo trabajar con la plataforma http://labserver.uv.es y cómo realizar los primeros pasos para la programación RAPID para robots ABB Description of the starting proposals for working with the web system http://labserver.uv.es.