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This paper shows a charging scheme for electric vehicles that would be faster, effective, and reliable than the existing system. This work proposed the method of changing the current parameters at discrete intervals dependent on the battery’s using the five-level battery charging method. To validate the results and design technique, the proposed work is executed by Matrix Laboratory, the obtained output results were extremely gratifying. Further motivated to build a practical working model and verify it with the obtained software values. Both the results were convincing and confirmed to be much faster than the existing schemes.

Voice-based smart home applications have taken a rapid growth in the past few years. Voice recognition is the ability of the system to receive, interpret, analyze and carry out the spoken commands. This paper proposes a ROS based voice - controlled robot, which runs using a differential drive mechanism and takes the voice commands from the user and moves a wheeled robot accordingly. The system is based on a statistical model such as the Hidden Markov Model (HMM). The HMM approach to speech enhancement relies on the Viterbi Algorithm.