Department of Electronics & Telecommunication Engineering, SIPNA's college of Engineering & Technology, Amravati
Online published on 24 October, 2013.
Voice controlled system is new technology to increase the efficiency of robot, reduced errors and is used to close the gap between effective production and required administration. A new technology suitable for many warehouse operations is voice recognized. It has also proved to reduce handling errors with often more than 50%. Anyone can use it by activating its own voice profile. The voice command is sensed via microphone. Ex: - When the person says forward in the mike the robot will go in the forward direction, Similarly, it will also work on the instruction like going Backward, Right-Left, Gripping, Lifting etc. It is laptop based robot and controlled through “visual basic”. This robot has two sections transmitting section is connected to laptop uses USB to serial adapter that sends respective code depends on respective voice commands into serial data. Such radio frequency that modulates data at 433MHz using ASK (amplitude shift keying) technique; data modulated in air is received by antenna. The receiver section is mounted on robot, which uses IC 89C52 and L298 ICs. Two L298 IC's are used to drive four DC motors. Such robot is able for doing tasks like gripping, lifting, moving forward- backward, turning right-left and pushing. Such wireless robot can work in 200meter area having speed of 150 rpm enable to lift the weight of 2.5 kg with his arm [5]. It is widely applicable in hospitals for paralyzed, handicapped and blind person. It utilizes hand free interface. It has industrial application and the place where manual work is not possible such as coal mines, can do the robot using our voice. The old man who is unable to do his work, the voice controlled robot can do it very easily[6]. The benefit of such robot would be high processing power & great efficiency. So, it would simple to add camera, fire sensors, and temperature sensors. The advantages of such robot is as follows-
Data acquisition using microphone and sound card has been successful.
Data acquired has been segmented into separate words and quit period are dumps.
By adding sensors, such robot is introduced to replace people to access to the accident when the underground gas and dust explosion happens under coal mine. Voice controlled robot can also used as a Spy robot by connecting a wireless web camera.
