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Implementation of a Cost-Effective Didactic Prototype for the Acquisition of Biomedical Signals

1
Facultad de Ingeniería, Universidad del Magdalena, Carrera 32 No. 22-08, Santa Marta 470004, Colombia
2
Departamento de Ingeniería Eléctrica y Electrónica, Universidad del Norte, Km 5 Vía Puerto Colombia, Barranquilla 080015, Colombia
*
Author to whom correspondence should be addressed.
Electronics 2018, 7(5), 77; https://doi.org/10.3390/electronics7050077
Received: 19 April 2018 / Revised: 15 May 2018 / Accepted: 18 May 2018 / Published: 22 May 2018

Abstract

This paper presents the implementation of a cost-effective didactic prototype, which was designed as a tool for theoretical and practical learning in the biomedical instrumentation area for engineering students. The prototype provides integrated hardware and software components that allow online acquisition, processing, and visualization of electrocardiographic (ECG), electroencephalographic (EEG), electromyographic (EMG), and electrooculographic (EOG) signals, as well as measurements of bio-impedance from the skin. A control system using an Arduino Uno board and the PIC16F877A and PIC18F2550 microcontrollers was implemented. This control system allows selecting the type of module; the lead to be used in the ECG module; the input channel for the EEG, EMG, and EOG modules; and controlling the signal generator for the bioimpedance module. In addition, a graphical interface was developed in LabVIEW, in which all the acquired biomedical signals can be visualized in real time. It is highlighted as a novelty the modular implementation of the prototype, the incorporation of five modules in a single device and the graphical user-friendly interface. The final result is a low-cost device capable of processing and visualizing bioelectric signals through an interface in LabVIEW, which also allows the user to interact with each of the stages. View Full-Text
Keywords: electrocardiography; electroencephalography; electromyography; electrooculography; bioimpedance; biomedical signals; electrophysiology; didactic system electrocardiography; electroencephalography; electromyography; electrooculography; bioimpedance; biomedical signals; electrophysiology; didactic system
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Polo, A.; Narvaez, P.; Robles Algarín, C. Implementation of a Cost-Effective Didactic Prototype for the Acquisition of Biomedical Signals. Electronics 2018, 7, 77.

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