Voice Operated Stepper Motor Controller

Abstract

This paper describes the design and functions of a voice operated stepper motor controller developed at CEERI Centre, Delhi. The system works with spoken commands which are analysed and recognized by means of a microprocessor based isolated word recognition system. The output signal obtained from this system is fed to an interface board which controls the movement of a stepper motor. The system is speaker dependent and works with a limited vocabulary of 40 words. Speed, direction and angular movements etc of the motor can be controlled by pre-selected words. Words can be chosen in any language and the system can be easily trained for a new speaker. The system design indicate possibilities of converting the word recognition module and the controller interface module into custom made ASICs. The system is very useful for several applications in process control industry, aids for handicapped and robotics.