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The concept of Home Automation is gaining popularity as it helps in reducing human effort and errors and thus increasing efficiency. With the help of a Home Automation system, we can control different appliances like lights, fans, TV, AC etc.There has been a sudden shift from the normal switches to the remote based control switches in recent times. Presently, conventional wall switches located in different parts of the house makes it more difficult for operation, especially for the elderly and physically challenged people. Technological advancement has made it easier and necessary that every human being should own a mobile smart phone. Applications are being developed on Android systems that are useful in various ways. Another upcoming technology is natural language processing which enables the command and control of systems using voice. This research work presents a Micro Controller-based Voice Control Automation System using Android Smartphone. This system can enable users to have absolute control over every appliance in the house using their voices. The control circuit consists of an Arduino Uno microcontroller, which processes the user commands using voice via android smartphone which is installed with ‘AMR voice’ application. The relay controls the switching of devices while the Bluetooth Module shares signal data having established a wireless connection between the microcontroller and the smartphone.
The main aim of our system is to build a perfect companion for someone to be at home or in his/her office and control electronic appliances using voice. It is a Bluetooth technology based that can accept voice as direct commands and process them. The system is reasonably cheap, easy to configure and easy to use. The users should be able to control all the appliances from any point in their home or office by establishing a wireless control via Bluetooth. The proposed scheme in this paper can produce an integrated portable system that can wirelessly control two or more appliances. We demonstrate a system that can be integrated as a single portable unit and allows the user to wirelessly control home electrical appliances by turning them ON and OFF accordingly.
The Bluetooth module and relay circuit are connected to the microcontroller while the android based application is launched on the smartphone. The application can orally be instructed by the user to control an appliance either ON/OFF. The microcontroller sends a signal to the relay board having received instruction through the Bluetooth module. The application first of all searches for the Bluetooth device to establish wireless connection. The voice recognizer is launched as soon as connection is established. The audio signal read from the voice is converted into string. Value is assigned to each of the appliances and fed to the microcontroller. The microcontroller decodes the sent data signal and activates the relays for appropriate load switching.
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