DETECTING LIMBS USING CAPACITATIVE MEASUREMENTS

Človeško telo si lahko zamišljamo kot elektrodo navideznega kondenzatorja. Na zrak, ki je med telesom in drugo elektrodo, ki je vključena v merilni sistem, gledamo kot na dielektrik. S spreminjanjem razdalje med telesom in elektrodo spreminjamo kapacitivnost navideznega kondenzatorja. Današnja tehnologija omogoča nizko cenovno in preprosto izvedbo takih merilnih sistemov. V delu opisujemo zasnovo zaznavnih površin in njihovo implementacijo ter zaznavanje in interpretacijo podatkov. Med potekom dela smo izdelali dve nadzorni plošči, na katerih smo preizkusili več načinov merjenja kapacitivnosti, na podlagi katerih smo ovrednotili primernost za zaznavanje okončin. Prav tako smo ocenili primernost tehnologije za merjenje stabilograma.The human body can be thought of as an electrode of a virtual capacitor. We consider the air between the body and the second electrode, which is included in the measuring system, to be a dielectric. By changing the distance between the body and the electrode we change the capacitance of the virtual capacitor. Modern day technology provides us with low cost and simple implementations of measuring systems. In this work we describe the process of designing sensing surfaces, their implementation and gathering and interpreting data. During the course of this work we developed two control boards, on which we tested multiple methods of measuring capacitance and evaluated the suitability of the methods for detecting limbs. We have also evaluated the suitability of this technology for measuring a stabilograph