IoT Enabled Navigation System for Blind

One of the biggest issues faced by the visually impaired is the difficulty they face in navigating their path. This paper proposes an effective wearable system which is an IoT enabled navigation system for the blind which uses a raspberry pi to process a raspberry pi camera and ultrasonic sensors, to provide information about obstacles in the vicinity, with the help of audio assistance, for mobility of blind people. It uses an ultrasound sensor to measure the distance of an object to the user. This image is processed and the output is given in the form of an audio signal. This system also makes use of a NEO-6M GPS module to provide real time position status of the user. This enables easy location analysis of the user in time of distress and can project pathways to a particular destination using audio signals and pre-loaded maps. The system also uses an inbuilt GSM module in the Raspberry Pi to allow the user to send a distress signal to the authorities concerned. The signal transmitted consists of an alert message with the current location of the user.