Raspberry Pi based Smart Navigation System for Blind People
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Raspberry Pi based Smart Navigation System for visually impaired people using Google Map
This paper presents the development of a smart navigation for blind people using Google App Maker where we will develop our own API for Blind and low-vision users. Google App maker additionally, provides tools for developers who want to build accessibility features into their apps. In this project we will be using Raspberry pi to which we will make smart stick for blink people which will be embedded with moisture and ultrasonic sensor to detect the real time hurdles while walking with the Google Maps cloud attached to the raspberry pi for perfect navigation for the low-vision or blind people. This will make a smart system which will be very useful for the blind people and also at the same time more accurate and safe. The blind people interact with the system in voice. The cloud platform communicate with the smart phone using 4G technology. The proposed system can provide more abundant surrounding information and more accurate navigation, and verify the practicability of the newly proposed system.
Safe navigation and detailed perception in unfamiliar environments are a challenging activity for the blind people. This paper proposes a cloud and vision-based navigation system for the blind. The goal of the system is not only to provide navigation, but also to make the blind people perceive the world in as much detail as possible and live like a normal person.
In the existing system, smart blind stick is used which is embedded with some sensors which will tell the atmospheric condition of the atmosphere but not work with the navigation of routes.
In this proposed system, both sensors and the Google Map API make the navigation smart and interactive with the low-vision and blind people through the voice.
BLOCK DIAGRAM DESCRIPTION
- In this project MCP3008 is used, so connect 3.3v pin from raspberry to all sensors
- Similarly MCP3008 and all sensor’s ground pins should be grounded
- Now connect sensor’s output pins to each channels of MCP3008 (ex: LM-35 to channel 0, LDR to channel 1 and Moisture sensor to channel 2 of MCP3008)
- Google MAP Navigation is interacted with the Raspberry pi to make the audio voice of route navigation.
- Connect power supply for Raspberry pi
- Plug the HDMI cable in Raspberry pi from the monitor using VGA to HDMI converter cable
- Raspberry Pi
- Ultra-Sonic Sensor
- Moisture Sensor
- MCP3008(ADC IC)
- SD card
- Raspbian Jessie
- Google Map API
- Language – Linux
- Audio output.
According to this system, the blind people interact with the system in voice. The cloud platform communicates with the smartphone through Wi-Fi or 4G mobile communication technology. For testing the system performance, two groups of tests have been conducted. One is perception and the other is navigation. Test results show that the proposed system can provide more abundant surrounding information and more accurate navigation, and verify the practicability.
 “Blind navigation system for visually impaired using windowing-based mean on Microsoft Kinect camera” in 2017 Fourth International Conference on Advances in Biomedical Engineering (ICABME).
 “Mobile phone based indoor navigation system for blind and visually impaired people: VUK — Visionless supporting framework” in 2018 19th International Carpathian Control Conference (ICCC).
 “Virtual-Blind-Road Following-Based Wearable Navigation Device for Blind People” in IEEE Transactions on Consumer Electronics (Volume: 64 , Issue: 1 , Feb. 2018 ).
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