Voice controlled car

It is a four wheel drive car which can be controlled by using voice commands given to it
through Bluetooth. Bluetooth module is connected to arduino board. We can give commands by phone.
Bluetooth present in the phone transmit the signal to Bluetooth module present in the car. Arduino will
further decodes the signal and it will respond to the appropriate action.

1. PRESENTATION ON VOICE CONTROLLED CAR PRESENTATION BY Phani krishna -16R21A03 E 1 DEPARTMENT OF MECHANICAL ENGINEERING MLR INSTIUTE OF TECHNOLOGY 4/5/2018 VOICE CONTROLLED CAR 1

2. ABSTRACT This project builds a voice controlled car that can be controlled by voice commands and it is conveniently reacts to corresponding voice command. However noise and distance handling may need future development. 4/5/2018 VOICE CONTROLLED CAR 2

3. INTRODUCTION When we say voice control, the first term to be considered is Speech Recognition S tand-alone speech-recognition circuit (SRC) is it programmable. You can program and train the SRC to recognize the unique words you want to recognize . These commands are given to Bluetooth module and received via android application. The integration of control unit with Bluetooth device is done to capture and read the voice commands. This vehicle then operates as per the command received via android application. 4/5/2018 VOICE CONTROLLED CAR 3

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5. BLOCK DIAGRAM 4/5/2018 VOICE CONTROLLED CAR 5

6. WORKING PRINCIPLE The car runs on simple voice commands forward , back ,left ,right , stop. The voice command is given to the android application as input This input is given to Arduino by Bluetooth module and Arduino gives commands to the motors as programmed With help of servo and ultrasonic sensor it can sense the obstacles 4/5/2018 VOICE CONTROLLED CAR 6

7. MATERIALS REQUIRED MOTOR SHIELD L293D JUMPER WIRES CHASIS 4WD (including dc motors and wheels) ARDUINO UNO BOARD 12V BATTERY BLUETOOTH MODULE (frequency  2.4 to 2.485 GHz and range is 10mts approx.)   4/5/2018 VOICE CONTROLLED CAR 7

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9. SWOTANALYSIS STRENGTHS:- Road accidents can be reduced by placing the ultra sonic sensor in this type of cars WEAKNESS:- When there is any small obstacle in front of car then it stops automatically OPPORTUNITIES:- Works on voice command and provide comfortable driving facility even for people who don’t have limbs . THREATS:- The voice command fails when a wrong command is given and this may lead to accidents 4/5/2018 VOICE CONTROLLED CAR 9

10. APPLICATIONS The robot is useful in places where humans find difficult to reach but human voice reaches .E.g. in a small pipeline , in a fire-situations ,in highly toxic area Command and control of appliances and equipment . This car can be used as the vehicle for the disable persons like people who don’t have limbs 4/5/2018 VOICE CONTROLLED CAR 10

11. FUTURE SCOPE This research work has been narrowed down to short range ZigBee module. Using a long range modules will result in connectivity with the robot for long distances. Power Optimization such sleep and wakeup schedules can be incorporated. Image processing can be implemented in the robot to detect the color and the objects. Automatic Targeting System can be implemented in the robot for tracking the target. 4/5/2018 VOICE CONTROLLED CAR 11

12. CONCLUSION The voice recognition software has an accuracy around 75% in correctly identifying a voice command. But it is highly sensitive to the surrounding noises. There is a possibility of misinterpreting some noises as one of the voice commands given to the robot . Also the accuracy of word recognition reduces in face of the noise. The sound coming from motors has a significant effect on accuracy. There are some drawbacks in the mobile platform. In these model we can add ultra sonic sensor for stopping the vehicle if any obstacle comes 4/5/2018 VOICE CONTROLLED CAR 12

13. REFERENCES www.arduino.org www.beyondlogic.org www.wikipedia.org www.elementzonline.com www.elementztechblog.wordpress.com 4/5/2018 VOICE CONTROLLED CAR 13

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