International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 03 | Mar-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1991 IoT based route assistance for visually challenged P.Bhavishya 1 , E.Pavithra 2 , V.Nivetha 3 , R.Vidya Prakash 4 1, 2, 3 Student, Dept. of Computer Science and Engineering, R.M.K Engineering College, Tamil Nadu, India. 4 Asst. Professor, Dept. of Computer Science and Engineering, R.M.K Engineering College, Tamil Nadu, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - The intelligent devices have taken us to a convenient and fashionable era, however while we use a pedometer to calculate the number of steps, the blind even do not have the ability to walk independently. There is no doubt that they are eager for convenience and freedom based on this, we propose an intelligent system that assists the blind in walking. The system consists of three ultrasonic sensors (attached to a cane) which are not used to just detect the obstacles but the visually challenged will be directed in the direction (front/right/left) which has no obstacles, when other two directions are blocked by an obstacle. Or when there is an obstacle in only one direction then the distance of other two directions will be calculated and he/she will be directed to go in a direction at which the distance is longer. The Mq2 gas sensor is also appended to the system to warn the user in case he/she is too drunk and make them wary. Key Words: blind, visually challenged, HC Sr04 ultrasonic, Mq2 gas sensor. 1. INTRODUCTION According to the statistics of the survey that has been conducted by World Health Organization 39 million people are blind, 285 million people are visually impaired [1]. The cardinal challenges faced by them are mobility and navigation. The development and popularization of smart devices are bringing us to a convenient and fashion epoch, we should be aware that while many people enjoy the convenience of technology services and use the step- counting software to show off their steps, many blind people can’t walk freely. At present, the cane and wheelchair do not bring convenience to them. They need the help of the chaperone to walk by contraries.. The utility model is matched with a multifunctional walking stick with alcoholic and Ultrasonic sensors. This system can assist the blind to walk, help them avoid the obstacles and lead them in a direction that doesn’t have obstacles with the help of a buzzer tone from single buzzer having sounds unique in each direction i.e., for each direction left, right and straight three different buzzer tones are programmed instead of using three different buzzers. Therefore it is more reliable and system has less hardware. 2. THE PROPOSED SYSTEM 2.1 A System Overview In our proposed system, the system consists of three ultrasonic sensors (unlike the models that have been depicted in [2] and [3] which have only one ultrasonic sensor which cannot recognize any terrain changes)by which the direction of the blind people can be easily directed to the correct path by detecting the obstacles present around them. In this system, there is also use of alcoholic sensor so that we can find whether he/she has drunken or not. To differentiate the direction in which the person needs to travel to avoid obstacles, we have the buzzer with different frequency tones using tone function. So for each different direction that the arduino programming calculates based on the distance between obstacle and the cane, the blind person will hear different tones. For instance, if the stick calculates the direction to travel is right, then a tone unique to that direction will ring from the buzzer. Fig1: the cane with ultrasonic sensors and buzzer attached The following are the components involved in the proposed visually challenged route assistance. 1. Arduino Uno: The Arduino Uno is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. Arduino can send and receive the data to most devices, and can also command electronic devices through internet. The software program used to program the Arduino UNO board is simplified C++ [4].