Smart Assistance Device for the Visually Challenged: Integrating GPS Technology and Emergency Support Features with RTOS

There are many problems faced by visually impaired people. Blinds find it very difficult to walk and also do many other small things. Their grief is huge. In this paper a solution is proposed to one of their problems in form of an innovative blind stick. The proposed model of this blind stick contains the smart system that is designed to send an emergency message with the message and location of the user to the guardian. The system contains the GPS and GSM modules which together accomplish this task. Visually impaired are guided by the micro controller which receives the emergency signal through a button. The push button is also connected to a buzzer that is loud enough to catch the attention of people around. Apart from these, the smart stick also contains sensors that are used for object detection. Hence, this model is beneficiary not only to the users but also to the guardians, as can be relieved to some extent. Finally, this paper focuses on developing an assistive technology for individuals with visual impairments. Utilizing an ESP32 micro controller and the FreeRTOS Real Time Operating System, the device leverages GPS technology and integrates emergency support features. Even FreeRTOS supports efficient Inter Process Communications like Mutex, Semaphores & message queues etc. This innovative tool aims to enhance user autonomy and security by providing essential navigation and safety functionalities.