Home Applinces Control By Human Voice

We can control any home appliances by using our voice. The main aim of this project is to control light, fan, computer etc… by using human voice. The physically handicap people does not capable to operate home appliances by using their hands. They are not capable to on/off the switch by using their hands since This project is very useful for physically disabled/physically handicap person .They are capable to operate home appliances by using their Voice. In this system we are using voice recognition module to recognize their voice. When we speak one than first device will be on and remaining devices will be off. When we speak two than second device will be on and remaining devices off and so on.

Prototype of Voice controlled Home Automation System

Fig. 1: Prototype of Voice controlled Home Automation System

In the normal switch board we have to push switch manually and oftenly stand up and operate switch manually so that it is wasted of time, It is also used to operate for handicap person, using a voice recognition application which is interfaced with electric device. The prototype of the Switchboard is built using a micro-controller, chosen for its low cost, in addition to its versatility and performance in mathematical operations and communication with other electronic devices. The system has been designed and implemented in a cost effective way so that if our project is commercialized the needy users in developing countries will benefit from it

· Technology used in our project:

Here we are using voice reorganization technology. So we are using HM 2007module to recognize the speech signal. This module is used to convert the voice signal into corresponding binary code that is given to the microcontroller, and the microcontroller gives the output according to the voice input.

Generally microcontroller generates codes in its output according to the input. So using this module we can control switch relay corresponding to the voice command.

· Here there are five voice command is used for controlling the switch relay

1. Switch1

2. Switch2

3. Switch3

4. Switch4

5. Switch5

6. Switch6

· Working with block diagram, circuit and PCB:

Block Diagram of Voice controlled Home Automation System

Fig. 2: Block Diagram of Voice controlled Home Automation System

· PCB Layout of Voice Controlled Switchboard:

PCB Layout of Switchboard used in Voice controlled Home Automation System

Fig. 3: PCB Layout of Switchboard used in Voice controlled Home Automation System

· PCB Track Layout of Voice Controlled Switchboard:

PCB Track Layout of Switchboard used in Voice controlled Home Automation System

Fig. 4: PCB Track Layout of Switchboard used in Voice controlled Home Automation System

Components and Programming

· List of Components

Table showing list of components used in design of Voice controled Home Automation System

Fig. 5: Table showing list of components used in design of Voice controled Home Automation System

· Programming for project

o We used KEIL software for programming to control our Switchboard

Screenshot of Embedded C Code used in Voice controlled Home Automation System

Fig. 6: Screenshot of Embedded C Code used in Voice controlled Home Automation System

Advantages:

Compact
User friendly
Less complex
Low cost
Easy to implement
Accuracy
Economical
Reduce manpower

Application of voice controlled Switchboard:

· This is useful in communication equipment to prevent the signals or noise coming from the speaker.

· switch a device used in such as a computer or appliance or lamp on and off by voice command or other sound.

In telephone communication.

Project Source Code

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 Program for voice control Switchboard
#include
unsigned char data byt=0xFF;
  void keydly()
      {
           int a,b;
           for(a=0;a<50;a++)
           for(b=0;b<1000;b++);
      }
  void int1() interrupt 2
     {
           byt=P1;
           EA=0;
           keydly();
     }
  void main()
      {
           P2=0x00;  
           P1=0xFF;
           back:IE=0x84;
           byt=0xFF;
           while(byt==0xFF);
           switch(byt)
               {
                    case 0xF2:
                        P2=0x0A;
                        break;   
                    case 0xF4:
                             P2=0x08;
                             break;
                    case 0xF5:
                             P2=0x03;
                             break;
                    case 0xF6:
                             P2=0x02;
                             break;  
                    case 0xF8:
                             P2=0x05;
                             break;
                }  
        }    goto back;

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