IoT Based Alert System for Visually Impaired Person
M.Nirmala and Mathan Kumar A · Journal of Computational Mechanics Power System and Control · 2023
The design, development, and testing of an Internet of Things (IoT)-enabledsmart stick allowing blind people to traverse the outdoors with the capability to distinguish and warn about impediments are presented in this work.The suggested design uses water sensors to identify puddles and other wet surfaces in the user's route, ultrasonic sensors to detect obstacles and a high-definition camera with object identification built in.Additionally, after properly recognizing and identifying items, the person is informed about various obstacles and objects utilizing voice feedback through earphones.The suggested smart stick has two operating modes: the first mode uses ultrasonic sensors to detect obstacles and provide feedback via vibration motors regarding their direction.The second mode employs voice feedback while still detecting and identifying obstacles.Under the situation and a person's preferences, it enables switching between the two modes.Additionally, the user's latitude and longitude values are recorded and uploaded to the IoT platform for efficient tracking via global positioning system (GPS) and global system for mobile communication (GSM) modules, which allow the user's or stick's live location to be watched on the IoT dashboard.Additionally, a panic button is offered for emergency assistance by creating a request signal in the form of an SMS that includes a Google Maps link created using latitude and longitude coordinates and transmitted through an IoT-enabled environment.The lightweight, waterproof, size-adjustable, and battery-efficient smart stick has been designed.Energy efficiency, portability, stability, ease of use, and sturdy features are all guaranteed by the entire design.This system's major goal is to assist visually impaired people in an outside setting while maintaining their safety and freedom.