Guiding Visually Challenged Using Raspberry Pi

- Sep 18, 2018-

Blindness is a state of lacking the visual perception due to physiological or neurological factors. Partial blindness indicates incomplete development of the optic nerve or the visual center of the eye, and complete blindness indicates complete loss of visual sense. This project designed and implemented a simple, cheap, user-friendly intelligent guidance system to improve the mobility of blind and visually impaired people in specific areas.

The project includes wearable devices, including a headset connected to the Raspberry Pi, and a handheld sensor containing an infrared sensor circuit, to help blind people navigate safely alone and avoid any obstacles.The reflected infrared signals from an obstacle are used as inputs to Raspberry PI.Based on the received signal direction, the raspberry pie prompts a message in the headset to help take appropriate action.

The person wearing the headset will be given the appropriate order to take the necessary action.One example is that if there are obstacles in all directions,the user gets a message 'better to go back' through the earphones connected to the Raspberry Pi.

Festival text-to-speech installation. The Festival Speech Synthesis System is a general-purpose multi-lingual speech synthesis system used here to direct the visually challenged person to take the right path. Festival is designed to support multiple languages.


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