Sebastián Gutiérrez

Verified

Sebastián verified their affiliation via an institutional email.

Learn more

Verified

Sebastián verified their affiliation via an institutional email.

Learn more

• PhD
• Professor (Associate) at Universidad de Navarra

This study investigates the feasibility of using a collaborative robot as a haptic device. The research analyzes the robot’s behavior across a range of frequencies relevant to human interaction under two opposite operating conditions: free movement and highly constrained movement. To characterize the robot’s performance, simplified models are estim...

Studies analyzing indoor thermal environments comprising temperature and humidity may be insufficient when obtaining data from sensors, which may be susceptible to inaccurate or failed information from internal and external factors. Therefore, this study proposes an intelligent climate monitoring using a supervised learning method for virtual hygro...

This paper overviews the modeling, implementation, and mechanical characterization of an Automated Guided Vehicle (AGV) devoted to transport materials and tools in smart factories. The design is based on a differential-drive mobile robot configuration for which the mathematical model was obtained. Such model allows the simulation of the AGV's motio...

This document presents the development of the first prototype of an IoT system usig LoRa communication and FIWARE services. The information obtenained by LoRa's Open Source components and services, LoRaWAN and ChirpStack, is transferred to the Orion Context Broker (OCB) and then is used in the different services of FIWARE CrateDB and Grafana, used...

In the automotive industry, despite the robotic systems on the production lines, factories continue employing workers in several custom tasks getting for semi-automatic assembly operations. Specifically, the assembly of electrical harnesses of engines comprises a set of connections between electrical components. Despite the task is easy to perform,...

COVID-19 healthcare professionals recommend the general population staying at home and remote contacting the authorities, e.g. via SMS messages, if they show symptoms like cough, body pain, fever, and breathing difficulties. Although this approach considers the patient self-report, it is not supported by physiological data, i.e. medical personnel d...

Solar stoves are an economic, social and healthy alternative for rural cooking. Recently, the principles of operation of these devices have been improved to offer an efficiency similar to that of wood stoves. This document presents a design that involves the use of fiberglass and perlite as the insulating materials used in the manufacture of a sola...

The current research work proposes the design of an intelligent platform for managing the generation, distribution, transmission, commercialization and consumption of electricity, allowing the decision-making process aimed at reducing costs and maximizing the use of energy resources. The technological proposal is a system of information made of int...

One of the most important challenges for an electric vehicle (EV) is designing the battery pack or accumulator including its Battery Management System (BMS), as it has to be following the mechanical and physical conditions of the vehicle. A recent topic of great importance is the optimization of the efficiency of electric power transmission, concer...

This paper contains the procedure for the implementation of an application for exam test grading in a fully automatic way, putting into practice the resources that artificial vision makes available. This application allows you to grade an exam that has been designed in a pre-established format and that has subsequently been solved by the evaluated...

Tomato crops are considered the most important agricultural products worldwide. However, the quality of tomatoes depends mainly on the nutrient levels. Visual inspection is made by farmers to anticipate the nutrient deficiency of the plants. Recently, precision agriculture has explored opportunities to automate nutrient level monitoring. Previous w...

The Internet of Things plays role in all arenas. In this manuscript, we have to consider the growing flowers in a garden, vegetable, fruit, and other farming. We are considering the greenhouse which aims to introduce the productions of yields. Of course, the growth of plants, and farms are vital and need of everyone, keeping in view of this manuscr...

This article describes a monitoring system developed for temperature control and monitoring of a building using the Internet of things (IoT). The system controls an actuator that simulates an HVAC system using a global controller based on the data obtained by two temperature sensors. This data is stored in a platform called Firebase and is visualiz...

Internet of Things (IoT) is a term that has come to revolutionize the applications on the conventional use of the internet, and refers to any interaction that can be made between machines and objects. This article presents an explosive gas detection system using the Internet of things. The main goal of the system is to provide an efficient solution...

When a street lamp gets broken, usually it takes a big amount of time for the service to be reestablished, and this causes a situation in which people feel insecure because darkness usually causes the increase of illegal activities. This situation could be improved by applying a light bulb monitor. The document talks about the integration of a syst...

Currently, most of the world is connected through the Internet; there are no regional barriers between people, and even between things, since they can be connected and communicate through the Internet, allowing them greater capabilities and ways of use that before; this concept is known as the Internet of things. The population of elder adults in M...

The space industry in Mexico has been drawing great attention recently from the education sector through the implementation of projects for the design and development of satellite missions, encouraging and motivating students to participate and develop them. In this paper we present a favorable methodology for the energy management and the definiti...

In the Internet of Things (IoT) context a gateway translates the IoT protocols (Bluetooth, Zegbee, LoRa, Sigfox, etc) to Internet. Basically an IoT Gateway connects things to the platform. As a matter of fact, in 2016 the ABI Research company made a benchmarking study and as a result, it prospected IoT gateways sales by 64 millions of units in 2021...

In this paper a complete kinematics analysis of the RV-3SB Mitsubishi robot is perform. An alternative methodology to address the kinematic problem based on the Screws theory is presented. Then, the design of a simulator to validate the methodology proposed, by comparing the values of the simulator with the real values of the robot is presented, MA...

This paper aims to implement an efficient renewable energy selection (either solar or wind) based on the chosen geographic location of Aguascalientes, Mexico through a Machine Learning (ML) method. Likewise, the information listed below will provide both a critical analysis and review of the state-of-the-art applications for ML Algorithms such as S...

Maturity of LoRAWAN based solutions has led to the integration of innovative services in IoT systems, being geolocation a remarkable feature that enables functionalities as asset tracking. The before mentioned capability, combined with Real-time responsiveness and data analysis could derive to the possibility of smarter systems that significantly a...

This paper presents different techniques for sensing the feedback signals of isolated DC/DC converters. The paper compares the traditional measuring chain with two other options that improve the signal-to-noise (SNR) significantly. A theoretical analysis and experimental tests are presented. The results indicate that, with this SNR improvement.

Artificial intelligence has been playing an important role when it comes to the automotive industry and its quality of assemblies in the production line, this is because since the arrival of the industry 4.0 it has been subject to change and continuous improvement. In the past, we’ve observed how many machine learning architectures have been used t...

In this paper, the soiling impact on photovoltaic systems in Aguascalientes, in central Mexico, an area where 1.4GWp of new photovoltaic capacity is being installed, is characterised experimentally. A soiling rate of −0.16%/day in the dry season for optimally tilted crystalline silicon modules, and a stabilization of the soiling losses at 11.2% aft...

Solar tracking systems enable increased efficiency of a photovoltaic system through a continuous adjustment of its position with respect to the sun, thus increasing the generation of electrical energy. The integration of photovoltaic solar tracking systems in buildings and houses enables the energy needs of users in a broader way to be covered. Thi...

For hen breeders, hatching eggs in large quantities is a production problem, when they are incubated by hens. This paper describes the development of an intelligent system for a hen egg incubator. This incubation system, based on Arduino, LabVIEW, Google Firebase and MIT App Inventor can control temperature, humidity and egg rotation automatically....

Real-time haptic interactions occur under two exploration modes: active and passive. In this paper, we present a series of experiments that evaluate the main perceptual characteristics of both exploration modes. In particular, we focus on haptic shape recognition as it represents a fundamental task in many applications using haptic environments. Th...

The use of graphical mapping for understanding the comparison of products based on consumers’ perceptions is beneficial and easy to interpret. Internal preference mapping (IPM) and landscape segmentation analysis (LSA) have successfully been used for this propose. However, including all the consumers’ evaluations in one map, with products’ overall...

The automatic recognition of human falls is currently an important topic of research for the computer vision and artificial intelligence communities. In image analysis, it is common to use a vision-based approach for fall detection and classification systems due to the recent exponential increase in the use of cameras. Moreover, deep learning techn...

The problem of vibrations in civil structures is common; nevertheless, its negative effects can be significantly reduced using structural control methods with intention of maintaining structural welfare as much as possible. This work deals with the study of structural vibration control in a model of a civil-like structure, which consists of three-l...

Wireless sensor networks (WSN) involve large number of sensor nodes distributed at diverse locations. The collected data are prone to be inaccurate and faulty due to internal or external influences, such as, environmental interference or sensor aging. Intelligent failure detection is necessary for the effective functioning of the sensor network. In...

Electric motorcycles use a battery storage system and a controlled inverter (motor drive) to drive the wheels. Given that the sale of electric motorcycles is expected to grow significantly over the next decade, the aim of this research is to add a supercapacitor storage system to this simple network in order to extend the autonomy of the motorcycle...

Most rural dwellers in developing countries do not have access to adequate and regular supply of energy and most of these estimated two billion people are poor with no sustainable means of livelihood and therefore rely on wood fuel for their cooking and heating needs. And due to lack of energy, including electricity, socio-economic development is e...

El siguiente trabajo de investigación plantea el diseño de una plataforma inteligente para la gestión de la generación, distribución, transmisión, comercialización y consumo de electricidad permitiendo la toma de decisiones orientadas a la reducción de gastos y aprovechamiento de recursos energéticos. La propuesta tecnológica plantea un sistema de...

The prediction and understanding of environmental conditions are of great importance to prevent and analyze changes in environment, supporting meteorological based sectors, such as agriculture or smart cities. In that sense, this paper presents an Internet of Things (IoT) system for predicting climate conditions inside enclosures, i.e. temperature,...

Sun trackers allow the energy yield of photovoltaic systems to be increased. Among the different types of sun tracking strategies, North-South horizontal single-axis sun trackers are of big interest nowadays, especially for their implementation in utility-scale photovoltaic plants. It is important to find concepts which simplify as much as possible...

SCADA systems have been used during the last years in order to control and supervise industrial processes within a long distance, thus considerably reducing the loss of information, apart from offering a higher speed and security of data. Nowadays, due to the fast development of Internet of Things, of wireless communication and of electronics, a be...

The prediction and understanding of environmental conditions is of great importance to prevent and analyze changes in environment, supporting meteorological based sectors, such as agriculture. In that sense, this paper presents an Internet of Things (IoT) system for predicting climate conditions, i.e. temperature, using artificial intelligence by m...

The main purpose of this paper is to demonstrate the savings and economics of using an automated watering system within households. The paper will argue about a device capable of optimizing water consumption allowing water reuse. Device will be automated and will use an electric and mechanical system to redirect water to different reservoirs. Syste...

This paper introduces a simple yet novel tactile display device based on the lateral traction of its contact pins. In this concept, a single row of eight pins slides laterally on a rail to display tactile information as a traditional upwards/downwards pin-matrix display does. The advantage of this concept is that a row of N pins can display some in...

The electrical behavior of high concentrator photovoltaic power plants is affected by self-shading between solar trackers. Partial shading of the concentrator modules on a tracker causes complex effects in the output I-V characteristics. Shadows affect the behavior of the basic component of a concentrator photovoltaic generator, the solar receiver...

In this paper, a methodology for characterizing the I–V curve of partially shaded high concentrator photovoltaic modules is presented. It takes into account atmospheric parameters (direct normal irradiance, ambient temperature, wind speed and air mass) as well as the amount of shading on each receiver lens and the module electrical configuration. T...

This paper presents an analysis to determine the effect of the stress enhancement factor due to the presence of protrusions in the semiconductor shields of HVDC cables. The theoretical analysis of the electric field containing protrusions is based on a harmonic solution for the electric field for spherical and spheroidal protrusions. HVDC analysis...

This work studies the effect of protrusions and voids in DC cables taking into account the effect of conductivity and field distribution in DC cables. A 2D-FE model has been developed in order to verify theoretical analysis, revealing good agreement with analytical formulas.

This paper presents the numerical analysis of the influence of the presence of cylindrical voids in electric cables. Size, length and depth of voids are determinants of the discharge inception voltage. This analysis has been done with 2D and 3D finite element models and results have been compared with analytical formulas. The influence of depth in...

This paper presents a new concept of tactile display based on lateral motion of the contact pins (tactors) and its preliminary evaluation on tactile rendering. Unlike traditional tactile devices where tactors are arranged in an array and move upwards/downwards, a single row of tactors moves laterally on a rail to display tactile information as in a...

This paper introduces a new concept of tactile display based on lateral motion of the contact pins. Unlike traditional tactile devices where pins are arranged in an array and move upwards/downwards, a single row of pins moves laterally on a rail to display tactile information as in a 2D matrix. The advantage of this concept is that a row of N actua...