Detector prototipo basado en un campo eléctrico

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 detectora？？s sensitivity for getting slow movements.