Construção e Validação de Tapete de Pressão de Baixo Custo para Interação Humano-Computador

• Thaysa Barros UFPE
• João Marcelo Xavier Natário Teixeira UFPE
• Alana Elza da Gama UFPE
• Walter Correia UFPE

DOI: https://doi.org/10.5753/svr_estendido.2020.12952

Abstract

Different types of sensors and technologies have been explored to allow human-computer interaction. The search for sensors that allow a natural interaction, without the need for connections affixed to the body, or learning specific commands, is increasing. In this context, this work presents an input acquisition technology for computational systems through pressure, more specifically, pressure sensors in the form of a mat. The objective of this work is to develop and validate a low-cost pressure monitoring system prototype. It is a proof of concept study to present the use of an alternative generic pressure mat as an input tool for interactive solutions. A pressure mat was developed using a Velostat matrix, a material of variable resistance according to pressure application. The sensor data was received by an Arduino Mega development board and sent via Bluetooth in real time. Tests evaluated sensors resistance directly from Arduino and also from the complete integrated system. The sensors’ responses were evaluated, including their sensitivity, by gradually increasing the applied load. The prototype developed proved to be an exciting and low-cost alternative for interactive applications through foot pressure.

Keywords: Pressure mat, Human Computer Interaction, Velostat

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