MOBILE CONTROLLED ROBOT

TEAM MEMBERS:ABHINAV U PATIL(1RV09EE002)ABHISHEK KUMAR(1RV09EE003)

PRAVEEN G(1RV09EE034)RAMAKRISHNA PRABHU(1RV09EE037)

GUIDE:- MR. C S SURESH

In this project, the robot is controlled by a mobile phone that makes

a call to the mobile phone attached to the robot.

In the course of a call, if any button is pressed,

a tone corresponding to the button pressed is

heard at the other end of the call. This tone is

called "Dual Tone Multiple-Frequency" (DTMF). Conventionally, Wireless-controlled robots use rf circuits, which have the

drawbacks of limited working range, limited frequency range and the limited control.

Use of a mobile phone for robotic control can overcome these limitations. It provides the advantage of robust control, working range as large as the coverage area of the service provider, no interference with other controllers.

Introduction to DTMFDTMF standard was developed by Bell Laboratories.

Dual Tone Multifrequency System (DTMF), is a touch pad dialling tone.

DTMF standard is used in touch tone telephones and voice mail systems.

Allow users and devices to dial at much higher rate because of the uniformity of numbers.

Each digit corresponds to a high frequency and a low frequency

Both are transmitted simultaneously

Works by sending two sinusoids for each symbol pressed on the telephone keypad.

Fig. DTMF

How does it work?

When you press the buttons on the keypad, a connection is made that generates two tones at the same time. A "Row" tone and a "Column" tone.

The tones are divided into two groups:

Low group: 697 Hz, 770 Hz, 852 Hz, 941 Hz

High group: 1209 Hz, 1336 Hz, 1477 Hz,

µVision Keil  ROLE IN THE DESIGN: µVision Keil provides IDE for 8535 programming & is very easy to

use. When starting a new project, simply select the microcontroller you use from the Device Database and the µVision IDE sets all Compiler, Assembler, Linker, and Memory options. It’s device database is large which supports many ICs of the 8535 family. A HEX file can be created with the help of Keil which is required for burning onto chip. It has a powerful debugging tool which detects most of the errors in the program.

FlashMagic  ROLE IN THE DESIGN:   Flash Magic is a PC tool for programming flash based

microcontrollers from NXP using a serial or Ethernet protocol while in the target hardware.  It has some excellent features like changeable baud rate, erase all flash before programming, setting security bits etc. The HEX file created with the help of keil was selected through it for programming the microcontroller.

APPLICATIONS

1) Scientific

2)Military and Law Enforcement

3)Search and Rescue

4)Recreation and Hobby

FURTHER IMROVEMENTS & FUTURE SCOPE1. IR Sensors

2. Password Protection

3. Alarm Phone Dialer

4. Adding a Camera

 

Expected Time Of Completion

Project phases

Hardware module preparation

(1Week)[8th –mar-2012]

Program Code Development And

prototype preparation

(2 Week)[22nd-mar-2012]

Testing(1 week)

[29th-mar-2012]

THANK YOU ALL1. Wikipedia - The free encyclopedia

 

2. http://www.8051projects.info/

 

3. http://www.instructables.com/

4. Schenker, L (1960), "Pushbutton Calling with a Two-Group Voice-Frequency Code", The Bell system technical journal 39 (1): 235–255, ISSN 0005-8580

 

5. “DTMF Tester” , ‘Electronics For You’ Magazine , Edition (June 2003)

 

6. http://www.alldatasheet.com/

 

7. http://www.datasheet4u.com/

 

8. http://www.datasheetcatalog.com/

REFERENCES