Dtmf Based Water Controller Essay Example for Free

Dtmf Based Water Controller Essay Along with these problems there is no facility for protection from unauthorized user access to the system switching. Why use Intelligent Water Pump? 1)Manual switching is not beneficial in if user is far away from switching station. 2)Timer based switching circuits are beneficial if duration of load operation is fixed. But most of the cases it is not fixed. 3)General remote switching facility provides the efficient solution for these problem. But it is also affected with the parameter range of operation. Intelligent Water Pump provides the exact solution for these problems. It uses the intelligence of microcontroller along with the powerful peripherals. It uses GSM network which is now a days available in most of the places. It also provides password protection facility to protect the system from unauthorized use. It not on provides the remote switching of the system but also provides the status of system electricity to the user. The system provides instant access along with uncommon voice interaction facility. Operation: . GSM network:- GSM stands for ‘Global System for Mobile Communication’ It provides the network service for communication to both user controller side mobile phone. 2. User side mobile phone:- User sends the accessing commands to the Pump control unit using his mobile phone. User’s mobile phone also plays the received voice feedback messages from Pump control system. 3. Controller side mobile phone:- Controller use this mobile phone to detect p resence of call users commands( in the form of DTMF code) from headset output. Also voice feedback messages are put on the Mic i/p of this mobile. 4. Ring detector:- When user make the call , at that time the presence of ring on receiver mobile phone is detected by this circuit to inform the controller that user wants to access the system. 5. DTMF decoder:- When user enters the choice,the decoder IC8870 decodes the choice equivalent binary no. are available on it’s o/p(Q1 to Q4). Whenever new code comes ,the DTMF decoder will pulse low (STB pin) informing microcontroller that codes are available please take them. 5. Speech circuit:- All the voice messages required to inform the user about controlling action are stored in the voice rom(IC APR 9600). As per the trigger and control i/p from microcontroller, speech circuit put respective voice message on the mic i/p of controller side mobile phone. 6.  µController:- Microcontroller(89S52) keeps co-ordination among all peripherals. Whenever call is detected it takes controlling action according to user’s choice and plays respective voice messages for user’s acknowledgment. It also provides controlling signal for switching circuit as per electricity status user choice. . Switching Circuit :- It is basically a driver circuit which provides the making and breaking of ac mains to the water pump as per signal from controller. It consist of electromechanical relay and relay driver(IC2803) to drive it. 8. Water Pump:- Water Pump is a load which is to be controlled by intelligence of microcontroller based system. 9. AC mains detector:- This block detects the presence of AC mains. Controller check the status of this block before providing ON switching signal to the Water pump. Also availability of electricity can be judged from this block. 10. Power Supply:- It provides necessary power to system components as per requirement for their operation. It provides the regulated power supply along with Battery Backup facility. Block diagram of Intelligent Water Pump [pic] User Side Mobile GSM Network Controller Side Mobile Mobile Ring Detector DTMF Decoder Speech Circuit Power Supply To All Blocks  µ C O N T R O L L E R Water Pump AC mains Detector Switching Circuit Mic i/p Headset