Ultrasonic sound based navigation and assistive system for visually impaired with real time location tracking and Panic button

Blindness is a problem that plagues millions of people everywhere. Around 37 million people across the globe are blind, over 15 million of which are from India. In spite of all the technological advancements in the recent decade very little has been done for the blind people. The visually impaired suffer from a wide range of difficulties since they lack the primary information for circumventing obstacles and dangers in their path. Navigating or perhaps simply walking down a crowded street may pose significant difficulty. As a result of which, many people with low vision have to depend either on a friend or family member to help them navigate through the unknown environments. Our fundamental aim is to create a prototype which will alleviate the misery of the blind people. This system encompasses three technologies or modules-Ultrasonic sound for obstacle detection coupled with gyroscope sensor to trigger ultrasonic wave pulse, Global positioning system (GPS) and Global system for mobile (GSM). All of these modules combined with an Arduino board unite to produce a system which allows blind people navigate through any kind of environment. The system also tracks the location in real time and updates the location on a web portal through which the family members of the visually impaired can track the person and have knowledge about his/her whereabouts. Furthermore, the system also facilitates the user with a special panic button, this button is designed to be used in case of any in development of an emergency or a possible threat. At the press of just one button a system sends an alert message to the registered family member and the local police station along with the user's current location.