The Project aims at controlling a wheelchair for handicaps by means of human voice. The speech recognition system is a useful way of implementation and is easy to use programmable speech recognition circuit. Programmable, in the sense that user can train the words (or vocal utterances) he needs the circuit to recognize. This board allows the user to experiment with many facets of speech recognition technology. It has 8-bit data out, which can be interfaced with any microcontroller for further development. Some of interfacing applications which can be made are controlling home appliances, wheelchair movements, Speech Assisted technologies, Speech to text translation, and many more.
The wheelchair is controlled by voice commands. This can be moved in forward and reverse direction using geared motors of 60RPM. Also this wheelchair is a type of robot which can take sharp turnings towards left and right directions. This project uses PIC16F72 MCU as its controller. This project uses 6V battery.In this project, the controlling of a wheelchair by speech will be studied. Commands are spoken into a microphone, followed by an action by the wheelchair. Voice Controlled Wheelchair is a kind of a mobile robot whose motions can be controlled by the user by giving specific voice commands. The speech recognition software running on a PC is capable of identifying the 5 voice commands ‘Run’, ‘Stop’, ‘Left’, ’Right’ and ‘Back’ issued by a particular user. After processing the speech, the necessary motion instructions are given to the mobile platform via a RF link.
The speech recognition software is speaker dependant. The special feature of the application is the ability of the software to train itself for the voice commands(‘Run’, ‘Stop’, ‘Left’, ’Right’ and ‘Back’) for a particular user. The graphical user interface running along with the software provides a very convenient method for the users to train. It also provides many other facilities in operating the wheelchair.
In this project we will be using visual basic (VB6.0) as our speech recognition application.
WORKINGThe speech recognition system is a useful and easy to use programmable speech recognition circuit. Programmable, in the sense that user can train the words (or vocal utterances) he needs the circuit to recognize. This board allows the user to experiment with many facets of speech recognition technology. It has 8 bit data out which can be interfaced with any microcontroller for further development. Some of interfacing applications which can be made are controlling home appliances, robotics movements, Speech Assisted technologies, Speech to text translation, and many more.
Robotics has been of interest to mankind for over hundred years. However our perception of robots has been influenced by the media and Hollywood. The vast majority of robots do have several qualities in common. First of all, almost all robots have a movable body. Some only have motorized wheels, and others have dozens of movable segments, typically made of metal or plastic. Like the bones in your body, the individual segments are connected together with joints.
For mre detail: Voice controlled wheelchair
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