{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/7088"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/7088","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Sistema autônomo tri-banda de aquisição e armazenamento de dados para caracterização de paisagem acústica submarina","abstract":"This work presents a study of the acoustic landscape of the oceans, focusing mainly on the understanding of the acoustic signal physics in the marine environment, how to measure it and characterize some sources, such as mammals and ships. Knowing the signal to be measured, an autonomous data acquisition system for hydrophones was designed, capable of acquiring, conditioning and storing data using a microcontrolled system. As a project differential, a tri-band filter was developed, aiming to separate the frequency bands (low-pass, band-pass and high-pass filters), including amplifiers with gain adjustable through the microcontroller. Based on the design, a prototype was built, its features were obtained through bench tests and its performance tested in a hydrophone calibration tank. The manufacturing and testing of the prototype made possible to carry out another step in the search for a system to be industrialized, contributing to the research and development in Brazil.","abstract_html":"This work presents a study of the acoustic landscape of the oceans, focusing mainly on the understanding of the acoustic signal physics in the marine environment, how to measure it and characterize some sources, such as mammals and ships. Knowing the signal to be measured, an autonomous data acquisition system for hydrophones was designed, capable of acquiring, conditioning and storing data using a microcontrolled system. As a project differential, a tri-band filter was developed, aiming to separate the frequency bands (low-pass, band-pass and high-pass filters), including amplifiers with gain adjustable through the microcontroller. Based on the design, a prototype was built, its features were obtained through bench tests and its performance tested in a hydrophone calibration tank. The manufacturing and testing of the prototype made possible to carry out another step in the search for a system to be industrialized, contributing to the research and development in Brazil.","abstract_has_math":false,"creators":["Buchmann, Rafael Mazza"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Ribeiro, Carlos Eduardo Parente"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08","date_published":"2017-08","updated_at":"2026-07-24T01:16:24Z","subjects":["Engenharia oceânica","Acústica subaquática","Instrumentação eletrônica"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/7088","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Ribeiro, Carlos Eduardo Parente"]},{"key":"dc:creator","label":"Author","values":["Buchmann, Rafael Mazza"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-04-05T13:54:18Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:05:02Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-08"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engenharia oceânica","Acústica subaquática","Instrumentação eletrônica"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/7088"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work presents a study of the acoustic landscape of the oceans, focusing mainly on the understanding of the acoustic signal physics in the marine environment, how to measure it and characterize some sources, such as mammals and ships. Knowing the signal to be measured, an autonomous data acquisition system for hydrophones was designed, capable of acquiring, conditioning and storing data using a microcontrolled system. As a project differential, a tri-band filter was developed, aiming to separate the frequency bands (low-pass, band-pass and high-pass filters), including amplifiers with gain adjustable through the microcontroller. Based on the design, a prototype was built, its features were obtained through bench tests and its performance tested in a hydrophone calibration tank. 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