Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-26T20:11:16Z No. of bitstreams: 1 JosePedroDaSilvaJunior_DISSERT.pdf: 4999960 bytes, checksum: 89c199d28b20eb7d3be4379152395dd9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-29T20:43:42Z (GMT) No. of bitstreams: 1 JosePedroDaSilvaJunior_DISSERT.pdf: 4999960 bytes, checksum: 89c199d28b20eb7d3be4379152395dd9 (MD5) / Made available in DSpace on 2016-04-29T20:43:42Z (GMT). No. of bitstreams: 1 JosePedroDaSilvaJunior_DISSERT.pdf: 4999960 bytes, checksum: 89c199d28b20eb7d3be4379152395dd9 (MD5) Previous issue date: 2015-07-30 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Neste trabalho foi desenvolvido um magnet?metro, em que toda a etapa de convers?o de sinais e aquisi??o de dados foi realizada por software, constitu?da unicamente de um sensor de fluxo saturado, comercial. O magnet?metro possui alta sensibilidade para medir campos magn?ticos de baixa intensidade, est?tico ou de pequenas varia??es. Esse tipo de sensor funciona a partir da satura??o de um material ferromagn?tico utilizado como n?cleo. Foram elaborados dois programas. O primeiro em linguagem Labview, esse faz a comunica??o entre o sensor e o usu?rio atrav?s de um computador, o aplicativo produzido ? respons?vel pela obten??o e armazenamento dos dados referentes ao sinal de sa?da do sensor. O segundo programa feito em linguagem Java ? incumbido pela convers?o dos dados para assim estud?-los, al?m de armazen?-los em v?rios formatos e construir gr?ficos. Os resultados obtidos s?o de grande import?ncia para estudos do comportamento do campo geomagn?tico, pois as varia??es de fluxo magn?tico podem induzir correntes el?tricas na superf?cie e assim afetar a distribui??o de energia el?trica e tamb?m os sistemas de telecomunica??es. Mostrou-se que ? poss?vel, com este magnet?metro, estudar as varia??es de campos em tempestades magn?ticas e em per?odos considerados calmos. / In this work has been developed a magnetometer, which every step of conversion of signs and data acquisition has been realized by software, constituted solely of a sensor flux saturated, commercial. The magnetometer has got high sensitivity for measure magnetics fields of low intensity, static or with a little variations. This kind of sensor behave with base in the saturation of a ferromagnetic material has been used how core. For improve the instrument, have been elaborated two programs. The first in Labview language, it does the communication between sensor and user through computer, the app produced is responsible for get and save the data relative to the sensor's output signal. The second program made in Java language is delegated for the conversion of data to study them, also save in various formats and plot graphics. The results are of great importance to study of behavior of the geomagnetic field, because the variations of magnetic flux will induce electrical currents in surface of earth, so affect the distribution of electric energy and the telecommunication Systems. Showed to be possible, with this magnetometer, to study the variations of fields in magnetic storms and in period considered calm.