Navegando por Assunto "Simulador tridimensional"

Agora exibindo 1 - 2 de 2

Acesso aberto (Open Access)
MAERNI - Módulo de avaliação da exposição à radiação não ionizante proveniente das antes de transmissão de TV digital e rádio FM para uma ferramenta com o ambiente virtual 3D
(Universidade Federal do Pará, 2018-10-09) GUERREIRO, Charllene de Sousa; CAVALCANTE, Gervásio Protásio dos Santos; http://lattes.cnpq.br/2265948982068382
In recent years given the technological advancement of the communication media, and the increasing of users demand who wants a high quality of these services offered to them, the companies have increased the number of Radio Base Stations in cities, where many of these are located in environments with high housing density. Considering that each antenna or set of antennas present in these stations have an electromagnetic field of radiofrequency and transmit radiation, the concern with the population living in the adjacency of the transmitting antenna is the studies object of systems than regulate the companies that offer radiofrequency services, as well as, is the object of studies that aim not only to discover the effects of the contact with the ionizing and non-ionizing radiation present in these fields, but also to find out if the standard established for the regulation of services is being fulfilled. In this work presents the stages of development of a module, which consists of an extension added to the simulator for planning mobile communication networks (SIMPLARCOM). The module proposed allows, through the Virtual Reality environment (VR), to build and configure different scenarios, as well as the parameters of the transmission antenna, to provide an environment for non-invasive tests to evaluate non-ionizing radiation exposure; and identify potential insecure areas for housing, providing information for aid in decision-making regarding the relocation of transmitter antennas and aiming to decrease the ERP (effectively radiated Power) radiated by these Antennas. The module considers the guidelines present in resolution Nº. 303, published by the National Telecommunications Agency (ANATEL). In the results obtained is possible, navigate through the constructed scenario and check the value of the received power, the field intensity, the operation frequency, the antenna being analyzed and whether a certain point in the scenario is or is not receiving radiation at according to the threshold permitted by ANATEL.
Acesso aberto (Open Access)
SIMPLARCOM: simulador para planejamento de redes de comunicação sem fio utilizando realidade virtual e modelos de propagação
(Universidade Federal do Pará, 2014-04-25) PINHEIRO, Diego Carneiro; RIBEIRO FILHO, Manoel; http://lattes.cnpq.br/9329438229733907
This simulator is formed by the junction of Virtual Reality techniques with propagation models, developed through the studies of radio enlace, describing the loss that the transmitted signal suffers along the way in the environment. The Simulator has two modules. The first allows the creation of virtual environment with the placement, on a ground, buildings, trees, cars, antennas and other primitives that allow the construction of a customizable three-dimensional environment. The second module allows the configuration of the parameters related to antenna signal propagation as power, frequency, gain, etc., and also selects the propagation model for the simulation execution. Within this second module, there is a submodule responsible for coverage area planning study composed by antennas, in other words, this submodule simulates the distance that each antenna in the scenario can reach and generates its coverage area. To demonstrate the Simulator efficiency was created two virtual environments for testing. A scenario representing an urban environment where employed a classic propagation model, Okumura-Hata to small and medium-sized cities, and a wooded three-dimensional environment using a specific model for propagation simulation of densely wooded regions, developed at the Federal University of Pará called Lyra- Castro-UFPA.