Protótipo de Bengala Inteligente de Baixo Custo para o Auxílio de Deficientes Visuais

Based on the need to support people with visual impairment, the goal of this article seeks to present a prototype created with the purpose of increasing the accessibility and security for this type of user. The prototype consists of a handmade cane that has attached itself an ultrasonic sensor which alerts the user of possible obstacles in your path through a sound system. This sound signal varies according to the degree of proximity of an obstacle by increasing or decreasing the frequency of this signal. Besides that, the prototype aims an integration with a smartphone in order to use sensors from the smartphone through a Bluetooth connection.