International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 02 | Feb -2017
p-ISSN: 2395-0072
www.irjet.net
Obstacle Detection and Navigation system for Visually Impaired using Smart Shoes Tejal Chandekar1, Ranavikrant Chouhan2, Rajanigandha Gaikwad 3 , Hrushikesh Gosavi 4, Student, Dept. of Computer Engineering, SITS, Maharashtra,India Student, Dept. of Computer Engineering, SITS, Maharashtra,India 3 Student, Dept. of Computer Engineering, SITS, Maharashtra,India 4 Student, Dept. of Computer Engineering, SITS, Maharashtra,India 1 2
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Abstract - Highly over sighted field of applications for the
visually impaired people has put it in despair. Existing solutions prove to be inadequate or highly expensive. Current technological advancements need to benefit, above all, the most disabled. Here we have surveyed the existing solutions meant for autonomous mobility for the visually impaired people. In this paper we have proposed a novel design, Smart Shoes with sensors embedded in them to guide a visually impaired person fluidly and to alert him/her of the obstacles that lay ahead of him in his path. The design is aimed to develop an easy to use Android application to cater to the special needs, used to guide the person coextending the features of the Smart Shoes. Key Words: Visually impaired, sensors, embedded system, Arduino, Android.
1.INTRODUCTION An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints. It is embedded as part of a complete device often including hardware and mechanical parts. Embedded systems control many devices in common use today. Android is an operating system developed by Google for mobile systems. It is based on the Linux kernel and designed for touchscreen mobile devices such as smartphones and tablets. Android's user interface is mainly based on direct manipulation, using touch gestures such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input. Our primary objective here is to make the best use of the sensors which are available at hand for real time obstacle detection and navigation. The sensors to be used need to of minimum size and cost providing maximum functionality in order to help a visually impaired person navigate and move around autonomously. The usage of Android is restricted to its features which are not visual but will still help a visually impaired person. The user needs to be able to launch his application without having to view anything on the device with the sole help oh the hardcoded keys on the Android device. All the features of the sensors, Arduino microcontroller and Š 2017, IRJET
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Android are to be combined to design a new device for autonomous mobility of a visually impaired person.
2. LITERATURE STUDY A complete and reliable sensing system for obstacle detection can value a lot from the collective usage of numerous types of sensors, especially from the active passive combination. Any precise type of technology may have hitches to meet all necessary necessities in order to detect an obstacle in various lighting or weather conditions. The muddle background and intricate moving patterns of all objects which may appear on a road scene in urban streets demand erudite processing of sensor inputs. In order to overcome this problem, a sensor - fusion and segmentation approach can be used. From the technology's point view, different sensing technologies such as ultrasonic sensor, microwave radar, laser scanner and computer vision can be used for obstacle detection task. The main problem is to design algorithms that are robust enough to reliably detect and warn for any obstacles that can appear in front of the user on the road area. In [1]A.Discant et al. speaks about the different types of sensors such as active and passive sensors. It also throws light on various sensing systems designed using the combinations of these sensors. [2] This paper presented the use of ultrasonic and infrared sensors for distance dimension in the enlargement of an obstacle detection system for senior and people with vision impairment. Investigational results show that ultrasonic and infrared sensors have diverse characteristics in terms of output voltage measurements. It is clearly designated that ultrasonic sensor gives a linear output representative whereas infrared sensor shows a nonlinear output representative. Both sensors are able to detect an obstacle at the distances within their usable range with percentage of precision between 95% and 99%. The experimental result indicates that the US and IR sensors are able to provide reliable distance measurements even with different colours and materials of obstacles. Another thing that has been shown is that IR sensor has slightly advanced resolution than that of the US sensor, particularly for slight distance measurement within their usable ranges. Future work, the system should determine the sensor location on the
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