project presentation on cell phone operated land rover
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project presentation on cell phone operated land rover

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The objective of this project is to enable the users to control a robot by a mobile phone that makes a call to the mobile phone attached to the robot. The operations performed by the cell phone ...

The objective of this project is to enable the users to control a robot by a mobile phone that makes a call to the mobile phone attached to the robot. The operations performed by the cell phone operated land rover includes forward, backward, stop, left and right turn.

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project presentation on cell phone operated land rover project presentation on cell phone operated land rover Presentation Transcript

  • CELL PHONE OPERATED LAND ROVER USHA MITTAL INSTITUTE OF TECNOLOGY, MUMBAI PROJECT PRESENTATION ON ELECTRONICS AND COMMUNICATION DEPARTMENT UMIT, MUMBAI-400049
  • PREPARED BY: POOJA KASTURI (1011017) SUNANDA KOTHARI (1011018) MADHURA CHANDRASEKAR (1011021) GUIDED BY: Dr. NEMA SHIKHA
  • CONTENTS • Introduction • Basic block diagram of project • Circuit diagram • Technology used • Components used • Software used • Algorithm • Advantages and disadvantages • Applications • Future scope • Conclusion • References
  • INTRODUCTION • Aim of the project is to use a mobile phone to control a robotic arm mounted on a land rover • Provides robust control, large working range and 16 controls. • Control of robot involves 4 different phases: a) Perception b) Processing c) Action d) Detection
  • BASIC BLOCK DIAGRAM OF PROJECT MT
  • 1.PERCEPTION • First part is to make a call to the mobile phone which is attached to the robot. • Next part is the decoding of DTMF tone generated by pressing a key in calling phone. • Audio signal output from receiving phone is fed to DTMF decoder chip. • Decoder chip converts DTMF tone into binary codes to be fed to microcontroller. • MT8870 IC used as DTMF decoder in our project.
  • 2. PROCESSING • After perception stage, microcontroller processes the binary codes it receives. • Microcontroller is pre-programmed in “C” to perform specific task according to input bits. • Atmel‟s ATmega16 is used for processing.
  • 3. ACTION • Final stage is rotation of motors based on input given by the microcontroller. • Two DC motors of 30 rpm are used for the land rover and driven by motor driver IC L293D.
  • 4. DETECTION • For obstacle detection, a pair of IR transmitter and receiver is used along with buzzer. • When the obstacle come near the robot, the IR transmitter will transmit the IR rays on the object and the object will reflect the IR rays to the IR receiver. • The IR receiver will receive the IR rays and it will activate the buzzer.
  • CIRCUIT DIAGRAM OF MAIN PROJECT
  • OBSTACLE DETECTION CIRCUIT
  • DTMF SIGNALS AND DTMF DECODING CIRCUIT • DTMF “Dual Tone Multiple-Frequency”. • Used in a telecommuncating signaling • The 16-keys touch tone pad. • DTMF assigns a unique „sound‟ to each key. • Keys are arranged in a matrix of 4 columns and 4 rows.
  • GROUPING OF FREQUENCY • Signals generated by the superposition of two pure sinusoidal tones. •The DTMF signal generated is the sum of two sinusoidal tones.
  • DTMF DECODER IC
  • TRUTH TABLE FOR DTMF DECODER
  • ATMEGA16 MICROCONTROLLER • Advanced-RISC architecture. • 16K bytes of In-System Programmable Flash Program memory. • Internal and external interrupts. • 32 general-purpose registers. • High-performance, Low-power AVR 8-bit Microcontroller.
  • FEATURES OF ATMEGA16 • Widely used. • Easily available. • Cost effective. • Speed of execution of instructions. • Flexible instruction set. • Vast documentation. • Easily available support and development tools.
  • DIAGRAM OF ATMEGA16
  • DC MOTOR CONTROLLER L293D • Microcontroller output is not sufficient to drive DC motors, so L293D is used. • L293D comes in 16-pin DIP. It can provide current upto 600mA at voltages from 4.5V to 36V. • It can be used to drive inductive loads such as relays, solenoids etc • In the project it is used for simultaneous bi- directional control of two DC motors.
  • DC MOTOR CONTROL
  • ACTION PERFORMED CORRESPONDING TO THE KEY PRESS
  • SOFTWARE USED • The software is written in „C‟ language • Hex code for Atmega 16 is generated by using Code Vision AVR „C‟ compiler. • The next software we used is „EAGLE‟ for circuit schematic design and layout design.
  • ALGORITHM • STEP 1: START • STEP 2: DECLARE VARIABLES • STEP 3: SET PORT AAS I/P PORT • STEP 4: SET PORT D AS O/P PORT • STEP 5: ACCEPT INPUT • IF I/P IS 0X02 THEN MOVE MOTOR IN FORWARD DIRECTION • IF I/P IS 0X08 THEN MOVE MOTOR IN BACKWARD DIRECTION • IF I/P IS 0X04 THEN MOVE MOTOR TO LEFT • IF I/P IS 0X06 THEN MOVE MOTOR TO RIGHT • IF I/P IS 0X05 THEN STOP MOVING MOTOR • STEP 6: STOP
  • ADVANTAGES • Wireless control • Surveillance System. • Takes in use of the mobile technology which is almost available everywhere. • This wireless device has no boundation of range and can be controlled as far as network of cell phone
  • DISADVANTAGES • Cell phone bill. • Mobile batteries drain out early so charging problem. • Not flexible with all cell phones as only a particular cell phone whose earpiece is attached can only be used.
  • APPLICATIONS • Scientific • Military and Law Enforcement • Search and Rescue • Recreation and Hobby
  • FUTURE SCOPE • Password Protection • Alarm-Phone Dialer • Adding a Camera
  • CONCLUSION • We have successfully implemented the entire circuit on the PCB with obstacle detection feature. • Since all we need is a mobile call establishment to instruct the robot due to the cell phone‟s unending and cheap availability, this is highly feasible. • The level of sophistication is quite low and hence its working is user friendly. • Project can also be subjected to standardization and hence has a good future scope.
  • REFERENCES [1] Schenker, L, "Pushbutton Calling with a Two-Group Voice- Frequency Code” The Bell system technical journal, vol 14,no. 2, Jan 2006. [2] M. Ali Yousuf, R. Montúfar Chaveznava, and V. de la Cueva Cueva Hernández, "Robotic projects to enhance student participation, motivation and learning", Hernández Current Developments in Technology-Assisted Education ,pp 922-952, July 2008. [3] Robert Siwy, "Generation and Recognition of DTMF Signals with the Microcontroller MSP430", Texas Instruments Deutschland, October 2005. [4] “Cell phone based land rover” Liu, Simon & Silverman, Mark. November 2009 [online] Available: http://www.instructables.com/id/Cellphone-operated-Robot/ [accessed:Jan 2013]. [5]http://www.datasheetcatalog.com/datasheets_pdf/M/T/8/8/MT8870.shtml [6]http://www.alldatasheet.com/datasheetpdf/pdf/STMICROELECTRONICS/L298.ht ml [8]http://robosapiensindia.com/robomart/index.php?product_id=218&page=shop