UNMANNED ARMED VEHICLE USING 3g AND DTMF 18/80

1. GUIDE Mr. BHASKAR.S UNMANNED ARMED VEHICLE USING 3g AND DTMF18/80 BY ARJUN R KRISHNAN ARUN KUMAR S JAYESH M RAJATH M B DEPARTMENT OF ELECTRONICS ANS COMMUNICATION NAGARJUNA COLLEGE OF ENGINEERING AND TECHNOLOGY, DEVANAHALLI, BANGALORE

2. Introduction • Overview • The scenario • Need for the project • Objectives • On board mobile phone with camera which feeds live video to the person who is controlling through 3G video calling facility. • The locomotion of the robot are controlled by another mobile phone at the controller’s end using DTMF signals. • The robot can traverse through all the rough terrains and capability of climbing the steps. • The robot is equipped with a gun. • The robot has night vision (IR), also a flash light • The robot is equipped with a small arm • The robot has metal detector. • The robot can avoid obstacles and propagate autonomously using IR sensors.

3. Block Diagram

4. Description of Block Diagram • DTMF decoder • Dual Tone Multi Frequency • Conversion of analog tones into digital equivalent

5. Description of Block Diagram • ATMEL’s 8051 micro-controller • This is the most micro-controller used for general purpose • Easily understandable internal structure and block diagram • Flexibility in programming

6. Description of Block Diagram • The L293D motor driver • Micro-controller cannot be directly connected to motor • Has dual H-bridges

7. Description of Block Diagram • Stepper motor • Used to pan the mobile phone’s camera around. • Stepwise panning for greater detail. • It is an electromagnetic actuator • Every time it receives a digital pulse it rotates in specific number of degrees in rotation.

8. Description of Block Diagram • Gun • Relay is used • Fires when the designated key is pressed • Robotic Arm • Has two degrees of freedom • Used for cutting wires during bomb diffusion. • Metal detector • Detects landmines • Sends pulses to the micro-controller • Which in turn steps the robot back

9. Description of Block Diagram • IR proximity sensors • Sharp GP2D12 distance sensors used • It is capable of measuring the distance between itself and an object that is within a distance range of 10cm (~4") to 80cm (~30").

10. Highlights • Mobile controlled • 3G live video • International Mobile Telecommunications-2000 (IMT-2000). • Supports video and voice calls • Very high data rate (up to 14.0 MB/s on the downlink and 5.8 MB/s on the up link.) • Step climbing ability • Can traverse through any rugged environment

11. Process of Operation • Video call initiated from the controllers 3G mobile phone. • Video call picked up automatically by the 3G mobile phone present at the robot’s end. • The controller receives live video from the robot’s 3G mobile phone • The controller presses the keys in his mobile which inturn moves the robot present at the remote place • All the locomotion controls and arm controls etc. are incorporated compactly into the keys 0-9,*,#.

12. flowchart

13. start Initalize input And output ports Key pressed If Key = 2 yes Move forward no If Key = 8 yes Move Backward no If Key = 4 yes Move left no yes If Key = 6 Move right

14. Key pressed no If Key = 5 yes stop no Stepper rotate clockwise Stepper rotate Anti-clockwise If Key = * yes no yes If Key = # no yes If Key = 1 Laser fire yes If Key = 7 Arm controls

15. Arm controls Key pressed If Key = 9 Exit out . . . . . If Key = 2 yes arm forward yes If Key = 8 arm Backward yes If Key = 4 Arm cut Arm rotate clk yes yes Arm uncut If Key = 6 If Key = 3 yes Arm rotate anti-clk If Key = 1

16. Interrupt occurred Disable all other interrupts Move back Delay for short time Stop Return from interrupt

17. start MOVE FORWARD LEFT SENSOR =1 • yes TURN RIGHT RIGHT SENSOR =1 yes TURN LEFT BOTH SENSORS ARE ON yes TURN RIGHT

18. Merits & Demerits ADVANTAGES • Live video coverage. • Can be controlled from any part of the world. • Is an all terrain vehicle. • Can climb steps. • Land mine detection using metal detectors. • Bomb diffusion capability using mechanical arm. • Ability to see in darkness. • Very compact programming. • Easy to operate • Can avoid obstacles and propagate

19. Merits & Demerits DISADVANTAGES • The robot must be operated in 3G coverage area. • Larger capacity battery is required. • In the event of malfunction the damage can be severe.

20. Future Developments • Autonomously rescue operations can be done. • The robot can be done autonomous using GPS coordinates . • Mechanical arm’s degree of freedom can be increased.

21. Applications • Nuclear energy plant • Spatial explorations • Defense purpose • Industrial • Commercial

22. Conclusion • Idea of mobile controlling and real time video feed. • Inclusion of all the controls and supplementary controls in the available keys of the mobile. • Indigenously made body and structure. • Can explore any environment and curb terrorist activities to a considerable extent and save many precious lives.