This voice controller for home appliances project is used to control all household appliances through a voice controlled Android application.

1. Voice Controlled Home Appliances

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Voice Controlled Home Appliances
Introduction
 Home automation control system (HACS) is a concept a lot of work has done in this
field and many solutions has proposed.
 Home automation deals with providing a network in the house which links.
 It is used in internet and wireless technology to communicate and control the
appliances.

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Voice Controlled Home Appliances
Why Home Automation ?
 Security system knows all about your occupancy of the house. With a little more
development it can build an intelligent ‘expert system’ to predict your usage.
 By linking just these two you could achieve a reduction in fuel costs and a better match
to your requirements.
 A home automation system can be controlled via a remote and/or with home
computers, iPads, iPhones, and smart phones.

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Voice Controlled Home Appliances
Types of a home automation control system
 PC-based system: Requires a PC to be running at all times.
 Dedicated PC
 Shared PC
 Standalone system: Runs without a PC, although may use a PC for programming.
 Hybrid system: Runs without a PC, but uses PC to add more function.

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Voice Controlled Home Appliances
Functional Description
 Inputs
 Outputs
 Voice Commands
 Key Presses (User Responses to Menu)
 User Interface Menu Via LCD Screen
 Speaker Queuing User To Say Command Word

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Voice Controlled Home Appliances
General Working

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Voice Controlled Home Appliances
Hardware Implementation
 In this section will discuss on the hardware used in the implementation of this system
that include the
 ULN2003 IC chip
 Microcontroller
 voltage regulator
 the relay for interfacing
 In this section will discuss on the hardware used in the implementation of this system
that include the AT89S52, ULN 2003, voltage regulator and the relay for interfaces.

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Voice Controlled Home Appliances

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Voice Controlled Home Appliances
RS 232 interface serial communications 12

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Voice Controlled Home Appliances
RS-232 Specifications
 The standard is simply concerned with serial data communication between the
computer which has the voice recognition software and the hardware kit.
 Cabling : Single-ended
 Number of Devices : 1 transmit, 1 receive
 Communication Mode : Full duplex
 Data Rate (max) : 1Mbps

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Voice Controlled Home Appliances
Power Supply
 In the power supply section we use one step down transformer to step down the
voltage from 220 volt ac to 9 volt dc since the operating voltage for the ULN2003 relay
driver is 9v .
 Output of the transformer is further connected to the two diode circuit.

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Voice Controlled Home Appliances
 Turning lights down / off at night.
 Operating outside lights
 Turning lights or radio on / off when someone approaches the house, simulating
occupancy
 Operating television, hot water heater, kettle, toaster etc. ready for your use.
 Optimizing use of low cost electricity.
 Working with intelligent electrical white goods e.g. washing machine, fridge, microwave
etc.
Applications

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Voice Controlled Home Appliances
Advantages
 Flexibility & Convenience
 Security
 Cost Saving
 Security
 Remote Control

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Voice Controlled Home Appliances
Conclusion
 Controlling home appliances with voice technology has revolutionized our way
of living.
 Wireless Technology used in this system is complex.
 It is the location independent system being GSM available for the ease of user.
 In future many more features can be added in it like home appliances can be
controlled by using voice call by implementing more secure and efficient
techniques.

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