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Revista Ingenierías Universidad de Medellín
Print version ISSN 1692-3324On-line version ISSN 2248-4094
Abstract
CORREA, Rodrigo; PENA, Julián and REYES, Óscar. Prototype detector based on an electric field. Rev. ing. univ. Medellín [online]. 2009, vol.8, n.15, pp.115-128. ISSN 1692-3324.
This article describes the design and construction of a prototype system that senses objects perturbing a uniform electric field generated in a defined volume. To set up this system, an electric circuit capable of detecting any moving object even through a 0.15meter-thick brick wall was designed and built. Although the excellent electrodes sensibility to any object's position change going into or out the field, it was found the need for a reference electrode. Tests were carried out in order to check the system's movement sensibility. It was observed that the relative size and shape of the electrodes affects the detectorâ™s sensitivity for getting slow movements.
Keywords : electric field; electrodes; instrumentation; sensors.