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There has been intense research activity in the last decade, in the field of Ubiquitous Computing, since it is a model of interaction, which integrates the processing of information with the peoplés daily activities. This current study focuses on the implementation of a three-tier architecture application of geolocation in real time through mobile devices, in order to facilitate the mobility of people...
It presents the design and implementation of a manufacturing system integrating information and control technologies to provide an access to the user into part of the production system. A distributed control system is structured using didactic plants which emulate a manufacturing system of soft drinks. The control system is developed in Codesys®, integrating its operation through a monitoring system...
This paper presents a lambda tuner tool for the analysis and the design proportional-integral-derivative (PID) controllers using Matlab/Simulink software. The proposed application allows the user to easily obtain control parameters with lambda method and several traditional tuning methods. The lambda method guarantees robustness, stability and non-oscillatory response. It should be noted that the...
This paper presents a non-linear control approach to control a direct rotary dryer. The aim is to control the air temperature inside the dryer, in order to dry particles of biological origin, such as fish meal or soy meal. For this purpose a two-stage control technique will be proposed, the first part is a non-linear control based method and second an IMPC control. In order to control the output air...
This paper addresses the problem of optimal prediction in a network control system with measurement and control signal packet dropouts. Two packet dropout compensation schemes are considered. The first one deals with the measurement dropout, replacing the lost observation with its optimal estimate, which is calculated by the controller. The second one deals with the control signal dropout, by sending,...
This paper proposes methods for improvement electrical grounding systems performance. There is a intense need for efficient electrical protection systems, to protect people and property against electric currents discharges, thus adding improvements to electrical grounding systems already in use. Based on this principle, this work is divided in: i) soil resistance values variation, due to different...
In this work, it is proposed to calculate the sensitivity of parameters, based on analytical calculation, of repowered system between two electric generators, an induction generator and a synchronous generator, connected to a common bus in permanent regime, subject to a non-linear load. It is proposed a repowered system with simulated data where, based on percentage variations in the base values of...
This work proposes an analytical method for calculating sensitivity index. The proposed method is based on one-at-a-time measurements and calculates the difference between output values and the base solution to define the impact caused by each parameter in the system. The results indicated that the analytical method provides adequate values for the sensitivity index even when the parameters have minor...
The aim of this paper is to introduce a semantic methodology using ontology in order to improve results of data mining in judicial decisions database. An intelligent and automatic method to search for sentences in lawsuits related to the one in trial is presented. A judicial ontology is built with and without rules from experts. The method can provide judiciary celerity, seeking to solve the yearning...
This work presents images encoding and decoding using the theory of conformal mapping. The conformal mapping theory made changes in the domain of problems without modifying physical characteristics between the domains. Images were utilized and are transported between domains using transformation functions like encrypt keys. Developed method showed to be able to preserve original images characteristics...
Unmanned aerial vehicles (UAVs) have gained interest in different areas due to their versatility and multiple applications. In this case study, a wireless communication system is analyzed between the UAV and its earth station, for the transmission of thermal images in real time and application in fire control. Considering different types of UAVs capable of transporting a high performance thermal camera,...
Industrial production systems for smart factories or the so-called Industry 4.0 will demand high interoperability and connectivity between production modules, so that modules could be monitored in real-time. Production modules should make decisions on their own, with no human intervention, they must be modular and adaptable to changing circumstances and customers' requirements. The autonomous operation...
The article presents an intelligent traffic light system that allows optimal flow in a car crossing composed of two one-way streets. To achieve this purpose, real-time image processing is used to obtain the counting and space occupied by the vehicles. The algorithms of Backgroud Subtraction and KNN (K-Nearest Neighbor) are used, to determine the congestion vehicular in a street; the libraries of OpenCV...
A contourn descriptor generator algorithm implemented in embedded system of new generation to obtain shape characterization of manufactured rigid objects is presented in the paper. Acquisition and processing stages to obtain information about the shape of rigid object by way of a descriptor vector are shown in order to be implemented in a single hardware piece processor embedded system to obtain parallel...
Nowadays, many requirements must be fulfilled in relation to the application of agrochemicals in different productive stages of the export fruit in Chile. Agronomists in charge of productive orchards should consult different sources of information before proceeding to apply a certain product. This is based on technical guides and protocols that are also modified from time to time, which implies a...
This paper presents a method for assess the risk index in a power transformers park, risk index is a metric that allows park administrator to ensure an optimal physical asset management, allocating properly financial and human resources in operation and maintenance actions. Assessing risk index requires calculating two secondary sub-index termed failure probability and consequence factor. Those indexes...
The objective of this work is the optimization of a controlled electric vehicle (EV) strategy under a centralized architecture, considering a medium voltage electrical network. The method developed consists of a Particle Swarm Optimization, which determines the time available to charger each EV, segmentation of nodes of the network and their respective charging times, considering as constraints the...
The United Nations Organization for Industrial Development requested the International Organization for Standardization the development of an international standard for energy management, within the framework of the industries' needs to have an effective response to climate changes. As a result, the ISO 50001 standard was published in 2011. This standard specifies the guidelines for the implementation...
In this article we present the process of dimensioning the main elements of the wind turbine, on all the elements that are subjected to a rotation, to be assembled all the elements and assemble the wind turbine DIAWIND-A2. This wind turbine was built to supply power to rural homes and has the ability to self-position after census of the direction of greater wind flow through a weather vane. Wind turbines...
In 1973, two noteworthy bilateral treaties were signed between South American countries for the use of part of the shared hydroelectric potential in the Paraná River Basin. The international negotiations presented complexities of various kinds and resulted in an asymmetrical situation between Paraguay and the partner countries (Argentina and Brazil) of hydropower plants (YACYRETA and ITAIPU). The...
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