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The wireless sensor networks (WSN) present a big interest in the medical field, where the monitoring of patients with various affections has become mandatory‥ In the last years, a subclass of the wireless sensor networks has suffered a significant development and transformed into BAN (Body Area Sensor Networks) sensors, which have a bigger impact on the patients life monitoring.
This paper presents a mathematical model of an electric starter system for an internal combustion engine. For achieving this we started from the main elements that characterize the cranking process: torque, speed, starter motor terminal voltage and the battery terminals voltage depending on the current drawn from it. Based on these values we developed a general model that reproduces the starter motor...
Intelligent collaborative environments, where heterogenous entities operate together in achieving common mission objectives have been increasingly adopted for monitoring and surveillance of interest areas and physical infrastructures. They can be assembled from multiple existing technologies ranging from wireless sensor networks (WSN), terrestrial remote operated vehicles (ROV) and unmanned aerial...
EEG signal processing is a complex task that requires many (pre)processing steps, due to the low signal-to-noise ratio. Challenging approaches are continuously developed, to improve the performance of signal analysis methods. This study was performed to demonstrate the advantages of ICA algorithm in EEG signal processing and its impact in emphasizing the brain activity similarities and the differences...
Statistical tests are used extensively in selecting and testing random and pseudorandom number generators. This is important because the output of such generators can be used in various cryptographic applications, such as private key material. National Institute of Standards and Technologies proposed a methodology for conducting such tests, entitled Statistical Test Suite Special Publication 800-22...
Urban traffic congestion is a problem in almost all big cities around the world. Traffic management systems have been implemented in various forms, based on different algorithms, each one trying to achieve better performances than the others having the goal to improve as much as possible urban road traffic. In most cities new modules are added on top of the existing ones, trying to improve their performances...
By the global warming and decreasing fossil fuel, alternative energy sources are looked for future and protecting environment. In the recent years, many studies are made about wind power whereby deteriorating environment will be regarded.
Multicopters have started to be easily obtained and widely used. Even many people are trying to build them by themselves. However, since a multicopter is a dynamical system with many parameters and many sensors on it, the proper controller PID tuning or correct matching of right propeller, weight, motor and battery is complete engineering problem and if a good multicopter in means of good stability...
This paper presents a programmable controller for an induction motor (7.5 kW) used in hydraulic pump of crane polyp. Crane polyp is controlled with wireless joystick beside the wired one. The proposed system has an Atmega328 microcontroller, MC3PHAC motor drive IC (integrated circuit), nRF24L01+ transceiver and some external components. The polyp control has been improved by the proposed system. The...
This paper comes to support choosing a type of parabolic antenna for RF distributors. To do that, authors was done a series of analysis on the paper with purpose of finding an optimum solution. One of those analysis was to find a distance from the LNB to antenna's reflector. This distance was varied from 0 to 1m. On the same analysis was done another analysis, to determine that are the most favorable...
This paper presents an efficient segmentation method which uses simple neural network architecture. The goal was to implement an automatic annotation instrument of the vocal signal, capable to make the separation between vowel and consonant signal, respectively pauses between utterances. This instrument is used in the features extraction from the vowels areas by an emotion recognition application...
In a communication system having a limited bandwidth, it is very important to analyze the spectrum. The spectral analysis is performed by measuring the power of signal within a specific frequency band. A commercial spectrum analyzer is usually employed for instrument equipment and cannot be utilized for a communication auxiliary device because of its high cost. In this study, the low-cost digital...
This paper describes a new 2-1 cascaded hybrid sigma delta modulator where the discrete time filter is realized with fully differential current conveyor. The hybrid convertor, which is a combination of an analog integrator and two digital integrators, offers an increased dynamic range, helps make the resulting high-order sigma delta modulator stable and reduce power consumption comparing with discrete...
In this paper a shunt three phase active power filter with reference values based on p-q theory, using sliding mode control, is presented. The nonlinear load is composed either of a capacitive and an inductive, or just an inductive component. The filter is analyzed and the mathematical model of the inverter, the state equations of the power system, the sliding mode control with the existence conditions...
Underwater imaging is primarily focused on search and rescue, underwater mine detection, underwater cable and pipeline overhauling and underwater geological survey. Main challenge in underwater imaging is blurriness. In underwater environment blurriness is caused by many factors which includes microscopic organism, impurities and density of water which effects refractive index of water, and bokeh...
This part of the paper presents the problem of solar energy conversion into electricity using photovoltaic cells. The mathematical study of PV cells could be made by two models: single diode model and double diode model. By connecting in series several PV cells a PV panel is obtained. Small PV power generators are made by connecting multiple PV modules to form a PV array. Photovoltaic panels can be...
This paper presents an establish a methodology to facilitate decision making process that ensures reliable and optimum decision for water, water quality network and water pollution to be used in web-based Decision Support System (DSS) for water management by using ontology methods to provide a visualization of problem domain before implementation it by the programmer. The goal of the paper is to help...
This paper describes an effective solution to the task of a remote monitoring of super-extended objects (oil and gas pipeline, railways, national frontier). The suggested solution is based on the principle of simultaneously monitoring of seismoacoustic and optical/infrared physical fields. The principle of simultaneous monitoring of those fields is not new but in contrast to the known solutions the...
World has a rapid growing energy, especially electricity demand parallel with increasing population and developing industry. As a result of increase in electricity demand, electricity generation and associated CO2 and C emissions are also increasing rapidly. Additionally, the consumed amount of energy indicates the development level of countries. For the reduction amount of CO2 and C emissions has...
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