DTMF BASED INDUSTRIAL AUTOMATATION AND APPLIANCES CONTROL SYSTEM FOR RURAL AND AGRICULTUARAL APPLICATIONS

DTMF BASED INDUSTRIAL AUTOMATATION AND APPLIANCES CONTROL SYSTEM FOR RURAL AND 

AGRICULTUARAL APPLICATIONS

ABSTRACT:

Now-a-days Automation is playing an important role in each and every field such as Industrial, Home Rural and Agricultural Areas. Usually we used to control the industrial equipments by manual operation which increased the human effort and maintenance cost. In order to overcome this problem, the system is designed to control devices at remote place.

To control the devices from remote place we are using a DTMF technique. DTMF (Dual Tone Multi Frequency) is used which converts the desired frequency in to analog signals which is received by DTMF Decoder and given to microcontroller.

The microcontroller is used for switching the load equipment according to the frequency received by the DTMF receiver by using a combination of MOC (Opto Coupler) and TRIAC is used for load driving. In case of any power failure conditions to store the data we are using EEPROM.

This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

ADVANTAGES:

Ø  Effective control of home appliances.

Ø  Home automation using mobile phone.

Ø  Increases power efficiency.

Ø  Increases appliances lifetime.

Ø  Power wastage is reduced

APPLICATIONS:

Ø  Domestic purpose

Ø  Offices

Ø  Small scale industries.

Ø  Home appliances

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