The mentioned project is based on the world,s most powerful intel controller 8051. Most of the services provided in todays world are voice interactive, you call up your bank and computrised voice will speak to you,and guide you to enter a particular number from your phone to get the desired service.this service is only available through the fast speed computers and having huge ammount of memory.we emplemented interactive service for industrial applications.
You can switch on/off devices using your mobile phone or land line phone five numbers loads can be connected to the five relay provided.not only you can switch on /off devices it will also dial out a telephone number in case of security threat,or any safety or protection parameters goes beyond safety limit. In case of any of the above , for ex. Temperature of the machionery has gone beyond safety limit ,the device will first switch off the plant and dials out the prestored telephone number and delivers the emergency message. It will dial out foe five times at the interval of one minute and again monitor the parameters, and if the parameters are not withen limit again it will dial out . This cycle will repeate until the parameters becomes normal.
Application: this prject could be used for variety of purpose where you want to control something remotely.
A) suppose you own a company and are three or more partners and are always travelling. You have an office located some where. And have a main server you donot want that somebody other then your partner should handle this server due to security reason. At the same time you donot want to keep your server all the time on so ther this device comes to your help only requirement for this device is a parallel telephone connection.and of course power supplay.you can switch on your server remotely from any where in the world. Whenyou dial the number where this device is connected with the server,after five number of bell ringing you will hear please enter your password. When you enter the password. If your password is correct then device will further respond otherwise without giving any further response device will disconnect you.if you number is correct you willreceive these message
Press one for normal on off, press two for password change press three for telephone number change, press star to listen this menu again.
So if you press 1 and 1&1 you get message requested channel is on or 1&0 requested channel is off 1&2 to now the status of previusly on or off channels similarly with all the five channels same combinations are applies you can press star(*) to go back to previous menu.
Now pressing two you can change the password and device willrespond like this please enter your password and your password has been changed. Similarlay by pressing three you can change telephone numbrer.and device will respond please enter new telephone number &your lelephone nubber has been changed.
B) this was one example of this device similarly this could be used to control or switch on any process control machionary where allfunctions are automatic. Electric grid could be controlled remotely. Or outomatic production machionery could be controlled even during odd hours with yiur mobile phone.
Security features of this device suppose there is fire at the machionery space this device will switch off the machionery first and the dial our the pre stored number to your phone and will deliver the emergency message. And will keep dialing untill you come and personally reset this device.
This device has the following blocks
1.ring detector circuit comprises of bridge rectifire d1-d4 and opto coupler u8 mct2e
2. Watch dog timer comprising of ic 7400 and u7 ic 4047
3. Dtmf decoder ic u6 8870
4. Dialer circuit relay rl2 transister q1
5. Off hook circuit relay rl1 and transformer tr1 c5 and r8.
6. Microcontroller circuit the central processor 89c51
7. Speech circuit ic uv1 1840 where all the messages are stored
8. Amplifire circuit ic uv2 lm 386
9. Security storage ic 93c46
10. And load controller where relay boards will be connected p1
11. Power supplay circuit ic u10 7805,bridge rectifires d1-d4
12. Capacitor c1 and c2
13. Fire sensor is connected to connector p2 connector