A geodesic approach to three-dimensional measurement optic techniques for determination of movements and transport of heights in areas of risk

• Autor(a) principal: Seixas, Andrea de
• Data de Publicação: 2007
• Outros Autores: Pacheco, Admilson da Penha, Veiga, Luis Augusto Koenig, Santos, Daniel Perozzo dos, Faggion, Pedro Luis
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Boletim de Ciências Geodésicas
• Texto Completo: https://revistas.ufpr.br/bcg/article/view/8251
• topic: Técnicas ópticas de medição tridimensional; deslocamento vertical; sistema manual; sistema motorizado e métodos geodésicos de posicionamento tridimensional; Three-dimensional measurement optic techniques; vertical movement; manual system

This work deals with methods of applied geodesics related to threedimensionalmeasurement optic techniques applied to determine vertical movementsand transport of heights through modern geodesic instrumentation. It considers theimportance and necessity for the study of geodesic methods of three-dimensionalpositioning, by polar measurement systems based on theodolites. It considers thecurrent demands for industrial applications resulting from the need for greatergeometrical precision in the construction industry and in the operation of machinesand efficiency in the control of operational and environmental risks, conventionalgeodesic measurement methods need to be automated to be able to be employed.Such is the case, for example, of the requirements for an increase in speed andprecision as well as a reduction of measurement costs that are associated to qualitycontrol. The acquisition of vertical movement as well as the transport of heights canbe carried out by using the geometric levelling method as well as throughtransference of theodolitic height. By the polar method, grid line method andprocedures derived from trigonometric levelling. For angular measurements ofdirections and distances, based on advance intersection and polar measurement,they are potentially useful-principally in restricted surroundings or in noconventional monitoring applications - pointing and video theodolites, electronictacheometry and video tacheometry. In a general way, these systems are based ontheodolites, as the hybrid measurement system, which have manual functioning(manual system) or are adapted to motors (motorized systems) for completelyautomatic functioning. The importance of pre-analysis and field observations areworth emphasizing, in three-dimensional geodesic network as reference to precisepositioning of the objects under study, so that they can be studied and analysed asmuch for vertical movement as height transport. Thus searching for moreappropriate solutions for stability of buildings and therefore a reduction inconstruction risks.