Post on 10-Feb-2018
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7/22/2019 Speech Controlled Robot Ppt
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By:-
MAHENDRA JALAAKSHAY KOLI
SAGAR SHINDE
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IntroductionVoice Controlled Robot (VCR) is a mobile
robot whose motions can be controlled by theuser by giving specific voice commands. Thespeech recognition software running on a PC .
Software is capable of identifying the 5 voicecommands Run, Stop, Left, Right and
Back issued by a particular user.After processing the speech, the necessary
motion instructions are given to the mobileplatform via a RF link.
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Computer
Sapi and
VisualBasic
software
SpeechInput
throughMicrophon
e
User interface with PC is provided by meansof Microphone. When user gives somecommand for Robot navigation viamicrophone, sapi software which works asadd-on with Visual Basic program, decodesand recognizes the speech and decoded datais transferred to Visual Basic program.
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Computer
Sapi and
VisualBasic
software
SpeechInput
throughMicrophon
e
Visual Basic Program compares receivedcommand with Forward, Backward, Left Turnand Right Turn or Stop Command.
Visual Basic command then outputscorresponding command on parallel port ofPC.
ParallelPort
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The Parallel port or line printer terminal isfound commonly on the back of a PC as a D-
Type 25 Pin female connector.
The port is composed of 4 control lines, 5status lines and 8 data lines.
The original parallel port is a bundle of threeports namely, data port, status port, and
control port.
Each of the Data, Status, and the Controlport have specific addresses assigned to them.
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We are using DB25 connector for parallel port.Pins 2 through 9 form the 8-bit data output port.Pins 1, 14, 16, and 17 form the control port which iscapable of reading/writing.
Pins 10 through 13 and Pin 15 together form thestatus port.
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Computer
Sapi and
VisualBasic
software
SpeechInput
throughMicrophon
e
Opto coupler is used for avoiding anyelectrical damages to parallel port in case ifsome problem occurs with the connectedcircuit.
ParallelPort
Optocoupler
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Computer
Sapi and
VisualBasic
software
SpeechInput
throughMicrophon
e
RF encoder will encode commands needs to
be transmitted.
ParallelPort
Optocoupler
433MHZRF
encoder
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Computer
Sapi and
VisualBasic
software
SpeechInput
throughMicrophon
e
Encoded signals are transmitted by RF
transmitter via antenna. 433MHz is a free RFband available for experimental purpose.
ParallelPort
Optocoupler
433MHZRF
encoder
433MHZRF
Transmitter
Antenna
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Antenna AtRobot
433MHZRFReceiver
433MHZRFdecoder
While antenna at robot receives RFtransmitted command and RF decoderdecodes the command which is directly given
to motor driver circuit.
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Antenna AtRobot
433MHZRFReceiver
433MHZRFdecoder
MotorDrivingCircuit
DC Motorfor
navigation
RobotNavigationMotor driver circuit output is used to drive
DC motors for Robot navigation.
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The system requirement for this application can bebroadly categorized under two headings namely-
Hardware Requirements
Software requirements
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Processor: Pentium 1/ Pentium II / Pentium III /Pentium IV.
Memory : 32 MB Ram (Minimum)Resolution: 800 x 600 pixels.
Electronic wireless interface circuit-Opto coupler--433MHz transmitter / receiver module--Relay
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Software Requirements:
Platform : Any Operating System.
Language: JAVA
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Advised
Dont speak to fast but also not to slowly
Speak clearly
Dont speak too close to the microphone. 30-
50 cm is a good distance.
Try to speak with a good English accent.
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Advantages:-
Can be used for distance control of the robotwith the help of speech only.
Controlling machines via typing a commandor clicking with mouse is very common way todo tasks while here we are presenting a newway to control things.
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Future scope:-
Robot voice response feedback can also beimplemented.
We can also use this type of robot in militarywhich is to identified the target or terroristsposition by using infrared camera.
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Conclusion
The voice recognition software has anaccuracy around 75% in correctly identifying avoice command.
But it is highly sensitive to the surroundingnoises. There is a possibility of misinterpretingsome noises as one of the voice commands
given to the robot.
Also the accuracy of word recognitionreduces in face of the noise. The sound
coming from motors has a significant
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RERERENCES
C.Breazeal Emotive Qualities in Robot Speech
www.google.com
www.wikipedia.com
http://www.google.com/http://www.wikipedia.com/http://www.wikipedia.com/http://www.google.com/7/22/2019 Speech Controlled Robot Ppt
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