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27-09-2010, 05:30 PM
Post: #1
Cellphone-Operated Land Rover

.pdf  Cellphone_Land Rover.pdf (Size: 435.69 KB / Downloads: 485)
This article is presented by:
P. Raghavendra PRASAD and
K. Susram Rahul

ABSTRACT


Conventionally, wireless-controlledrobots use RF circuits,which have the drawbacks oflimited working range, limited frequencyrange and limited control. Useof a mobile phone for robotic controlcan overcome these limitations. Itprovides the advantages of robustcontrol, working range as large as thecoverage area of the service provider,no interference with other controllersand up to twelve controls.Although the appearance andcapabilities of robots vary vastly,all robots share the features of a mechanical,movable structure undersome form of control. The control ofrobot involves three distinct phases:preception, processing and action.Generally, the preceptors are sensorsmounted on the robot, processing isdone by the on-board microcontrolleror processor, and the task (action)is performed usingmotors or with someother actuators.

Overview
In this project, therobot is controlledby a mobile phonethat makes a call tothe mobile phone attachedto the robot. Inthe course of a call, ifany button is pressed,a tone corresponding to the buttonpressed is heard at the other end ofthe call. This tone is called ‘dual-tonemultiple-frequency’ (DTMF) tone.The robot perceives this DTMF tone. with the help of the phone stacked inthe robot.The received tone is processed bythe ATmega16 microcontroller with thehelp of DTMF decoder MT8870. Thedecoder decodes the DTMFtone into its equivalent binarydigit and this binarynumber is sent to the microcontroller.The microcontrolleris preprogrammed totake a decision for anygiven input and outputsits decision to motordrivers in order to drivethe motors for forwardor backward motion ora turn.The mobi le thatmakes a call to the mobilephone stacked in therobot acts as a remote. Sothis simple robotic projectdoes not require the constructionof receiver andtransmitter units.DTMF signaling isused for telephone signalingover the line in thevoice-frequency band tothe call switching centre.The version of DTMFused for telephone tonedialing is known as‘Touch-Tone.’DTMF assigns a specificfrequency (consistingof two separatetones) to each key sothat it can easily beidentified by the electroniccircuit. The signalgenerated by the DTMFencoder is a direct algebraicsummation, in real time, ofthe amplitudes of two sine (cosine)waves of different frequencies, i.e.,pressing ‘5’ will send a tone madeby adding 1336 Hz and 770 Hz to theother end of the line.



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26-04-2011, 12:48 PM
Post: #2
RE: Cellphone-Operated Land Rover
Presented by:
GUARAV A.KHADASANE
TEJAS JETHWA
SURAJ TERDE
AKSHAY SONWALE


.doc  project report on robo(final).doc (Size: 1.34 MB / Downloads: 206)
Abstract
Conventionally, wireless controlled robots user circuits, which have a drawback of limited working range, limited frequency range and limited control. Use of mobile phones for robotic control can overcome these limitations. It provides the advantages of robust control, working range as large as the coverage area of the service provider, no interference with other controllers and up to twelve controls.
Although, the apperanceand capabilities of robot vary vastly, all robots share the feature of a mechanical, movables structure under some form of control. The control of robot involves three distent phases: perception, processing, action. Generally, the preceptors are sensors mounted on the robot, processing is done by the on board microcontroller and the task is performed using motors or with some other actuators.
In the 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 called ‘Dual Tone Multiple frequency’ (DTMF) tone. The robot receives these tones with help of phone stacked in the robot. The received tone is processed by the microcontroller with the help of DTMF decoder ic cm8870 .these ic sends a signals to the the motor driver ic l293d which derives the motor forward,revarse…etc
INTRODUCTION :
Radio control (often abbreviated to R/C or simply RC) is the use of radio signals to remotely control a device. The term is used frequently to refer to the control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make [traffic] use of radio-controlled vehicles as well.
A remote control vehicle is defined as any mobile device that is controlled by a means that does not restrict its motion with an origin external to the device. This is often a radio control device, cable between control and vehicle, or an infrared controller. A remote control vehicle (Also called as RCV) differs from a robot in that the RCV is always controlled by a human and takes no positive action autonomously.
One of the key technologies which underpin this field is that of remote vehicle control. It is vital that a vehicle should be capable of proceeding accurately to a target area; maneuvering within that area to fulfill its mission and
Recently, Sony Ericsson released a remote control car that could be controlled by any Bluetooth cell phone. Radio is the most popular because it does not require the vehicle to be limited by the length of the cable or in a direct line of sight with the controller (as with the infrared set-up). Bluetooth is
still too expensive and short range to be commercially viable.
HISTORY
HISTORY OF REMOTE CONTROLLED VEHICLES:

The First Remote Control Vehicle I Precision Guided Weapon :
This propeller-driven radio controlled boat, built by Nikola Tesla in 1898, is the original prototype of all modern-day uninhabited aerial vehicles and precision guided weapons. In fact , all remotely operated vehicles in air, land or sea. Powered by lead-acid batteries and an electric drive motor, the vessel was designed to be maneuvered alongside a target using instructions received from a wireless remote- control transmitter. Once in position, a command would be sent to detonate an explosive charge contained within the boat!s forward compartment. The weapon!s guidance system incorporated a secure communications link between the pilot!s controller and the surface-running torpedo in an effort to assure that control could be maintained even in the presence of electronic countermeasures. To learn more about Tesla!s system for secure wireless communications and his pioneering implementation of the electronic logic-gate circuit read ‘Nikola Tesla — Guided Weapons & Computer Technology’, Tesla Presents Series Part 3, with commentary by
Leland Anderson
Use of Remote Controlled Vehicles During
World War II :
During World War II in the European Theater the U.S. Air Force experimented with three basic forms radio- control guided weapons. In each case, the weapon would be directed to its target by a crew member on a control plane. The first weapon was essentially a standard bomb fitted with steering controls. The next evolution involved the fitting of a bomb to a glider airframe, one version, the GB-4 having a TV camera to assist the controller with targeting. The third class of guided weapon was the remote controlled B-17.
It!s known that Germany deployed a number of more advanced guided strike weapons that saw combat before either the V-1 or V-2. They were the radio-controlled Henschel!s Hs 293A and Ruhrstahl!s SD1400X, known as ’Fritz
X,’ both air-launched, primarily against ships at sea.
09-07-2011, 09:55 AM
Post: #3
RE: Cellphone-Operated Land Rover

.doc  project report on robo(final).doc (Size: 1.34 MB / Downloads: 79)
Abstract
Conventionally, wireless controlled robots user circuits, which have a drawback of limited working range, limited frequency range and limited control. Use of mobile phones for robotic control can overcome these limitations. It provides the advantages of robust control, working range as large as the coverage area of the service provider, no interference with other controllers and up to twelve controls.
Although, the apperanceand capabilities of robot vary vastly, all robots share the feature of a mechanical, movables structure under some form of control. The control of robot involves three distent phases: perception, processing, action. Generally, the preceptors are sensors mounted on the robot, processing is done by the on board microcontroller and the task is performed using motors or with some other actuators.
In the 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 called ‘Dual Tone Multiple frequency’ (DTMF) tone. The robot receives these tones with help of phone stacked in the robot. The received tone is processed by the microcontroller with the help of DTMF decoder ic cm8870 .these ic sends a signals to the the motor driver ic l293d which derives the motor forward,revarse…etc
INTRODUCTION :
Radio control (often abbreviated to R/C or simply RC) is the use of radio signals to remotely control a device. The term is used frequently to refer to the control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make [traffic] use of radio-controlled vehicles as well.
A remote control vehicle is defined as any mobile device that is controlled by a means that does not restrict its motion with an origin external to the device. This is often a radio control device, cable between control and vehicle, or an infrared controller. A remote control vehicle (Also called as RCV) differs from a robot in that the RCV is always controlled by a human and takes no positive action autonomously.
One of the key technologies which underpin this field is that of remote vehicle control. It is vital that a vehicle should be capable of proceeding accurately to a target area; maneuvering within that area to fulfill its mission and
returning equally accurately and safely to base.
Recently, Sony Ericsson released a remote control car that could be controlled by any Bluetooth cell phone. Radio is the most popular because it does not require the vehicle to be limited by the length of the cable or in a direct line of sight with the controller (as with the infrared set-up). Bluetooth is
still too expensive and short range to be commercially viable.
HISTORY OF REMOTE CONTROLLED VEHICLES:
The First Remote Control Vehicle I Precision Guided Weapon :
This propeller-driven radio controlled boat, built by Nikola Tesla in 1898, is the original prototype of all modern-day uninhabited aerial vehicles and precision guided weapons. In fact , all remotely operated vehicles in air, land or sea. Powered by lead-acid batteries and an electric drive motor, the vessel was designed to be maneuvered alongside a target using instructions received from a wireless remote- control transmitter. Once in position, a command would be sent to detonate an explosive charge contained within the boat!s forward compartment. The weapon!s guidance system incorporated a secure communications link between the pilot!s controller and the surface-running torpedo in an effort to assure that control could be maintained even in the presence of electronic countermeasures. To learn more about Tesla!s system for secure wireless communications and his pioneering implementation of the electronic logic-gate circuit read ‘Nikola Tesla — Guided Weapons & Computer Technology’, Tesla Presents Series Part 3, with commentary by
Leland Anderson.
20-02-2012, 09:59 AM
Post: #4
RE: Cellphone-Operated Land Rover
to get information about the topic cell phone controlled robot full report ppt and related topic refer the link bellow


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