DTMF controlled robot vehicle

Abstract

The DTMF based robot is controlled by a mobile phone that makes a call to another mobile phone attached to the robot. In the course of a call, if any button 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) tone. The received tone is pressed by the microcontroller with the help of a decoder IC. The DTMF board transmits the signal to the Raspberry-Pi (3+) board to operate the motors and camera directions. Since this robot is controlled by dialing a call so we can also call it as “DTMF Controlled Robotic Car”. Hence we can introduced newly upgradable technology of Raspberry Pi (B+). The mobile phone on robot is connected to the Raspberry Pi (B+) controller and the output is connected to the relay’s. which helps the robot to make wireless. As we are using internet the robot can be operated from any part of the world so, we need to see where the robot is moving, for which we are using the windows App “MobaXterm & Advanced IP Scanner” for monitoring through camera mounted or built on robot. Hence also we have introduced 4 wheel drive, automatic calling attending technology for the particular number and camera IP address security technology so, In this robot more secure and safely one. The hazardous situation such as conflagration makes the humans’ life most inconvenient and risky. It is an unavoidable situation and it is very difficult for humans to face such situations. But mechanical devices can handle such situations without Human intervention. Sometimes it is also difficult to reach fire place at remote location. A robot can easily handle such situations and can efficiently work in hazardous units. The robot can easily reach the places where man cannot reach. In the present paper a fire extinguisher robot is developed to detect fire and the robot smidgens water on flames. The robot is operated and controlled with mobile phone. Dual Tone Multi Frequency tones are produced to control the movement of the robot. In the present work an Arduino UNO microcontroller is interfaced with fire sensors and generates sequence of steps to control robot movements, direction, and pumping of water. The robot movement and other operations are controlled from remote location. Conventional wireless controlled robots make use of RF circuits and have some limitations such as minimum working range and frequency range. These drawbacks are overcome using mobile phones, which posses the advantages of robust control, the working range is large as the coverage area of the service provider, interference is also less. DTMF mobile robot is nothing but a machine which can be controlled using a mobile. When a call is made on the mobile, if any of the button in the mobile is pressed , a tone that corresponds to the button pressed is heard at the other end of the call and this tone is called Dual tone Multi Frequency(DTMF). In this paper, we can control the Robot using Dual Tone Multi Frequency (DTMF) technology. DTMF technology is most useful technique at present days. It is worked on to methods digital signal processing (DSP). Wireless-control of robots uses RF circuit that has the drawbacks of limited working range and limited control. This DTMF is gives advantage over the RF; it increases the range of working and also gives good results in case of motion and direction of robot using mobile phone through micro controller. This type of wireless communication gives the remote handling operation of Robot using DTMF We can control the Robot using Dual Tone Multi Frequency (DTMF) technology. DTMF technology is most useful technique at present days. It is worked on to methods digital signal processing (DSP). Wireless control of robots uses RF circuit that has the drawbacks of limited working range and limited control. This DTMF is gives advantage over the RF; it increases the range of working and also gives good results in case of motion and direction of robot using mobile phone through micro controller. This type of wireless communication gives the remote handling operation of Robot using DTMF.