Módulo de visualización dinámica para señales biomédicas empleando una pantalla de cristal líquido graficadora

Abstract

The present paper describes the phases involved in the design and implementation of a Graphic Module, intended to the visualization of biomedical signals and alphanumeric information on a Dot Matrix Liquid Crystal Display. The processing tasks, oriented to transform the digitalized biosignal into the appropriated format, so that it can be displayed properly on a Graphic LCD, were carried out by a Field Programmable Gate Array FPGA. All the digital modules implemented in the FPGA were described using the Very High Speed Integrated Circuit Hardware Description Language VHDL. A methodological approach for the displaying of biomedical signal waveforms and related alphanumeric information on a Graphic LCD was included, as well as the way the characters, the numbers and others special symbols were coded. The biomedical information provided by a Breath Rate Monitor, designed by the Research and Development Group, was used as a test signal, obtaining suitable results. © Springer-Verlag Berlin Heidelberg 2007.