Smart Trolley with Navigation System for Assisting Visually Impaired Persons

Nearly 40 millions of people across the globe are blind indicating a significant challenge as per records of World Health Organization (WHO). This work focuses on solving the visual problems of individual persons by using a microcontroller, an ultrasonic sensor, RFID reader and other associated components for detection of objects during shopping in departmental stores within a specified range of distance. The system gives a sound alert to the blind person about the obstacle whenever any object is detected. This arrangement improves the quality of life for visually challenged persons by means of detection of obstacles and aids them to go for shopping in various places. The provision of sound alert on detection of obstacles is an economical and efficient strategy. The arrangement also includes implementation of RFID technology. A Bluetooth module is meant for feeding the voice information of the customer once the trolley moves in automatic manner. The servo motors are employed to transit the trolley in the departmental stores and operated in the direction of customer requirements. The above system can be extended for different applications such as vehicle parking systems, robotics and automated systems