Embedded Voice Controlled Computer For Visually Impaired and Physically Disabled People Using Arm Processor
Abstract : This paper gives the design and implementation of embedded voice controlled system using ARM cortex A7 for visually impaired and physically challenged people. ARM cortex A7 has features such as low power consuming than its predecessor and based on ARM v7 architecture, also it is a quad core processor. The system uses Google’s speech API for the conversion of speech to text and text to speech which has the dictionary of phoneme for more than 60k words and many languages are supported.
? These are the some existing systems about the assistive device for the people with disabilities.
? It is difficult to imprint, copy, transfer or edit these writings. With the advancement in modern day electronic sensors, touch sensing and microcontroller technology, the proposed system aids the visually impaired in navigation via audible messages and haptic feedback, helping them localize where they are and to improve their mobility.
? This device is light, portable, but range limited to its own size and it is not usable for dynamic obstacles detection.
? The micro navigation functions serve to restore a set of sensory motor behaviors based on visual objects localization.
? When the blind people need to go school/college and learn, it may cause some unique problems for their university/college life as well.
? This device is specially made for the people those who are blind, suffering from L/H Syndrome problem and paralyzed or PH people.
? Blind and Visual impaired people face several accessibility and mobility problems in day to day life.
? These problems can be overcome by improving the human ability for sensing and recognizing it.
? In general, urban accidents are influenced by a lack of right signalization or by a chance, and some related causes like public phone booths, mailboxes, poles, dump-carts and twigs of trees.
• It is a multi-purpose speech recognition module designed to easily add versatile, robust and cost effective speech recognition capabilities to virtually any application.
• The proposed system mainly focuses on building an voice controlling system for physically challenged people to control the entire computer with and additionally for controlling robots.
• The components used in the project are Raspberry pi 2 model B (ARM processor with 4 usb ports, 40 GPIO pins for interfacing with External devices and 5v micro usb slot for charging.)with internet connection,a microphone , sound card(general technologies, cmedia technologies).
? It is a highly stable, reliable and efficient device, which is cost effective and robust in nature.
? This takes place because of the sensor, which is used as an impedance buffer with a single sided operational amplifier.
? The ARM Cortex family of processors provides a standard architecture to address the broad performance spectrum required by these diverse technologies.
? Once a map is created the user can be guided efficiently by a route selecting method.
? The user will be equipped with a short range Laser, an inertial measurement unit (IMU), a wearable computer for data processing and an audio bone headphone.
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