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DTMF (Mobile) based speed control of AC motor.

Introduction:
With the advancement of ages from prehistoric to present day scenario our life has become more sophisticated and busy, so to ease the schedule of this busy life, technology has play the vital role in it and for its proper running of machine the technology has gone further by providing digitization of analog machinery and its use is enhanced day by day.
This project is based on the same concept by wireless controlling the machinery through mobile system anywhere from the world.
This project aims at Speed Control of AC motor using DTMF method; DTMF stands for dual tone multiple frequencies. The main idea of this project is to control the speed of an AC motor by wireless communication using DTMF decoder technique aiming at the fine use of mobile technology in our day to day use of automated products. Mobile phones have different frequencies for each number printed on it. These numbers when pressed during call duration produces a tone of certain frequency. This frequency is detected by DTMF IC which is then converted to binary codes, these binary codes output are taken from Q1, Q2, Q3, Q4 these outputs are applied to the Decoder and then to the Relays and hence control the speed of AC motor with the help of voltage regulator.
This project consists of the DTMF IC MT8870, relays, decoder 74hc154, AC motor, wires, PCB board and Mobile phones.
The block diagram for Speed Control of AC motor using DTMF method is shown in figure 1.1, which has all the building blocks required for its construction.

Figure 1.1:  Block diagram for speed control of AC motor using dtmf

In this block diagram, we have a mobile unit receiver which acts as a device for receiving instruction for execution of orders from the transmitter unit.  The mobile unit receiver is attached through headphone to DTMF decoder; this decoder decodes the output and provides output in binary form, the binary digits are then converted to the decimal values and each printed key has an output across it, this output when applied to voltage regulator which is made up of condenser through relays makes the AC motor to run on the specific speed through nine output.
Relays perform switching action, so with the correct value of the components and devices we can control the speed as desired.
The basic definitions for all the components used in the project are described below:

  • Mobile Unit Receiver: It’s a cell phone device whose headphone is attached with the circuit and act as an input to the circuitry.
  •  DTMF Decoder:  This is an 18 pin IC used for decoding the tone pair for providing binary outputs.
  •     4 to 16 Decoder:  It’s a binary to decimal convertor used for converting binary inputs to decimal values.
  • Relays:  These acts as switching device from 5V to 220 V.
  •  AC motor control unit:   To control the speed of AC motor, includes a voltage regulator.
  • Motor:  it is the motor whose speed we have to control.

Other components that’ are used are relays, wires, resistance, capacitance, LED etc.


Circuit Diagram: ???? where it is, comment to get it.

Conclusion: 

Thus the project is implemented with the view of enhancing the wireless technology the speed is controlled using variable load and the output was properly generated.

Full Report: Comment to get it :)

For Circuit Diagram and full report, please comment in the comment section, it's free ....

UPDATE:
With so many people demanding the full report and Circuit Diagram, I am Sharing the link below to download it, Enjoy buddies.

Report
http://sdrv.ms/11Bv2jA

Circuit Diagram
http://sdrv.ms/11Bv8HZ

Labels:

Comments

  1. AnonymousSunday, 17 March, 2013

    Hey, Please comment your email id to get the full report and circuit diagram.
    --Admin

    ReplyDelete
  2. AnonymousWednesday, 03 April, 2013

    hw to get ckt diagram and report???

    ReplyDelete
  3. AnonymousWednesday, 03 April, 2013

    Comment your email id,We will mail you.
    --
    Admin

    ReplyDelete
  4. udaykumarSaturday, 20 April, 2013

    hi can u plz mail total report udaykumanani209@gmail.com

    ReplyDelete
  5. parshiiSunday, 04 August, 2013

    The reports link are there in post end, have a look and enjoy, do reply back.

    ReplyDelete
  6. parshiiSunday, 25 August, 2013

    wrong id dude...

    ReplyDelete
  7. RahulSaturday, 28 September, 2013

    Hi can u please mail detailed report of the project to rahulsk.jnv@gmail.com

    ReplyDelete
  8. Aakash panchalTuesday, 06 May, 2014

    hi please send me the detailed report to akashpanchal542@gmail.com

    ReplyDelete
    Replies
    1. AnonymousTuesday, 20 May, 2014

      The link is there in the post.

      --Author

      Delete

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