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This work presents the development of a breathalyzer to be used inside a car. The breathalyzer constantly monitors the alcohol level in the ambient into a car, which is produced by the breath of the driver, principally. The breathalyzer uses an alcohol sensor MQ-3, a closed-normally electromagnetic relay to obstruct the ignition of the car, a global position system (GPS) module, a global system for...
The study and development of alternative technologies that allow the use of non-conventional energy has led, in the field of mechanical and energy, research into new boilers that are adaptable to the primary energy source in order to better exploit the same avoiding intermediate transformations of energy that could reduce efficiency. This study focuses on the Horizontal Vaporization Boiler, which...
Cardiac arrhythmia detection and classification is of outmost importance for early diagnosis to reduce significantly the rates of morbidity and mortality of patients with heart disease. In particular for patients with silent cardiac symptomatology, the advances in wearable sensing technology offer a promising solution for on-line, real-time detection of intermittent tachyarrhythmia events that otherwise...
This paper presents a full approach to outcomes due to the measurement of distance between two points in space, taking as reference XBee signal's (radio waves) attenuation as they travel from point A to B. XBee modules are able to communicate with each other, creating networks which consist of a coordinator, routers and end devices; allowing information flow across the network members. As bits voyage,...
Studies relating to chaotic circuits have received considerable attention due to a variety of chaos-based applications in science and engineering. This work deals with a novel simple chaotic generator with a single signum nonlinearity. The proposed chaotic generator is simple with only ten elements and can be realized easily. The behavior of such system is discovered through an implementation of the...
This paper proposes a hybrid active power filter for harmonic current mitigation in nonlinear loads. The hybrid system is composed of a shunt passive filter and an Active Power Filter (APF). The reactive power compensation is achieved by shunt passive filter banks. The scheme presented allows the reduction in size of the active power filter converter, as compared with the needs of a conventional active...
Interturn faults are a critical problem in power transformers that can eventually escalate into catastrophic faults and probably result in an overall network failure. Also, failures in transformer windings are still a major cause of transformer outages, and failure rates vary widely between different countries and systems, depending on many factors. Therefore, in this work, interturn faults with various...
The efficient generation of renewable energy coming from a solar system depends strongly on the direction at which the sun rays strike the surface of the solar collector. Therefore, the knowledge at any time of the sun position is very important for most solar systems including those doing sun tracking. In several solar devices, the user manually must provide the values of geographical latitude, geographical...
In this paper several laboratory and field measurements were conducted in order to know the response of the 3rd and 5th harmonics generated by household equipment. The obtained results from the field measurements indicated that 3rd harmonics are located in the second and in the third quadrants of the complex plane, and the 5th harmonics are located in the first and fourth quadrant of the complex plane...
A low cost, high gain, and ultra low power rail-to-rail input-output amplifier based in 0.18 micron CMOS is presented, whose size is ∼ 77 um per side. This work's incremental contributions are: First, a small and simple regulated cascode current mirror (RGC) is presented that is composed of a common source amplifier coupled with a diode connected self-cascode (SC). This RGC is incorporated in a standard...
This paper presents the design and development of an in-wheel brushless DC (BLDC) motor test-bed, the BLDC motor alteration to introduce different electric fault scenarios is described. The BLDC motor was rewinded to introduce short-circuit and open-circuit stator faults.
The Intelligent Power Switch (IPS) allows to control the energy flow in a residential electric distribution system and decreases intermittency that the integration of Renewable Energy Sources produces in a power grid. This paper presents the simulation analysis of different commutations' scenarios in the IPS to identify current and voltage characteristics in sources and loads. In addition, the use...
According to World Health Organization (WHO), currently in the World there are around 39 million persons visually impaired. These persons need developing several daily activities in the same way that they are done by people without visual impairments. These activities can be very difficult or dangerous for visually impaired persons (e.g. using public transport, crossing streets, walking alone, etc...
This paper presents the design of a system of faults detection and localization (its acronym FDI) based on a Piecewise Linear Observer implemented in F-16 fixed-wing aircraft under different regimes of flight: stable level wings, level turn, flight constant rising and roll. The scheme FDI based on observers that using to bank of linear observers for residues generation, switched by a switching law,...
Recently the issues of reactive power compensation and voltage control have become important in the operation of power systems, due to the constant growth of world demand as well as diversification of the connected load. Several solutions have been developed to provide greater flexibility to power systems during light load and maximum demand condition. These are two of the most critical conditions...
In this paper, two different filter structures for smart antennas based on a convex combination of independent transversal adaptive sub-filters are analyzed. The first structure combines the least-mean-squares (LMS) and the augmented complex least-mean-squares (ACLMS) algorithms, whereas the second one uses the recursive least-squares (RLS) and the complex dual least-mean-squares (CDU-LMS) algorithms...
A relative simple approach based on the computation of the area of a parametric curve produced by the 2D space representation of a set of parametric experimental functions defined by the signals of only two active EEG electrodes of a low cost neuroheadset (Emotiv EPOC) is proposed on this paper for the fast recognition of eye winks activity as control commands. This approach together with the use...
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