go to main index know about us who we are and what we are provide ? we provide training on how to reach us send e-mail us
   

 

GSM based agriculture system

INTRODUCTION

GSM based agriculture system is our major project. In this project we can control any electrical MOTOR through mobile or landline from any part of the country. We can use the different types of motors like AC as well as DC motor. This project is basically depending upon our mobile system. We are using DTMF circuit for this project at the input side of the project. We will use the another mobile set with this project to receive the input DTMF circuit.In this project one base unit is connected to the basic landline in parallel with the land line phone.. When we want to control any electrical motor through outer phone then first we  dial the connected mobile no., bell is ringing and after few bell phone is automatic on and switch on the base unit  to operate. Now we press the single digital excess code, if the excess code is ok then unit give a  tone pulse and switch on the base unit. Now again we press the switch on/off code to on/off any electrical motor. With the help of this code unit is on and base unit give a acknowledge pulse for on and off separately. in this project we can control number motors and different electrical functions through mobile. This project is basically used in the various fields like agriculture systems, our residential areas to fill our water tank. There the various applications for this system.

 

DESCRIPTION:

. Our project is divided into various parts:

1)     DTMF CIRCUIT

2)     MICROCONTROLLER AREA

3)     RELAY DERIVE CIRCUIT

4)     AC MOTOR

5)     POWER SUPPLY

In the DTMF circuit we are receiving the dual frequency at the input of the project. For this dual frequency we are using IC 9170, IC 9370. We are connected the mobile connector with is circuit. It has four output and these are connected with IC 74LS154. This is 4:16 mux. The outputs of this IC is connected with our microcontroller. And our relay derive circuit is connected with the output port of microcontroller.

We are using a power supply area of +5 V for microcontroller.In this project one base unit is connected to the basic landline or mobile in parallel with the land line phone.. When we want to control any electrical motor through outer phone then first we  dial the connected mobile no., bell is ringing and after few bell phone is automatic on and switch on the base unit  to operate. Now we press the single digital excess code, if the excess code is ok then unit give a  tone pulse and switch on the base unit. Now again we press the switch on/off code to on/off any electrical motor.

HARDWARE DESCRIPTION

 

DTMF DECODER.

In dtmf decoder circuit we use ic 8870 ic. IC 8870 is a dtmf decoder ic. IC 8870  converts the dual tones to corresponding binary outputs.

 

DTMF SIGNALLING.    Ac register signaling is used in dtmf telephones, here tones rather than make/break pulse are used fro dialing, each dialed digit is uniquely represented by a pair of sine waves tones. These tones ( one from low group for row and another from high group fro column) are sent to the exchange when a digit is dialed by pushing the key, these tone lies within the speech band of 300 to 3400 hz, and are chosen so as to minimize the possibility of any valid frequency pair existing in normal speech simultaneously. Actually, this minimisator is made possible by forming pairs with one tone from the higher group and the other from the lower of frequencies. A valid dtmf signal is the sum of two tones, one from a lower  group ( 697-940 Hz) and the other from a a higher group ( 1209-1663 Hz). Each group contains four individual tones.  This scheme allows 10 unique combinations. Ten of these code represent digits 1  through 9 and 0. . tones in DTMF dialing  are so chose that none of the tones is harmonic of  are other tone. Therefore  is no change of distortion caused by harmonics. Each tone is sent as along as the key remains pressed. The dtmf signal contains only one component from each  of the high and low group. This significaly simplifies decoding because the composite dtmf signal may be separated with band pass filters into single frequency components, each of which may be handled individually.

 

Planning:-

First of all we selected the voting machine. But its seems old circuit thats why  we did not selected this project. then after it we selected mobile control project. In that there was lot to learn because it include micro controller circuit, RF  technology. We spent three days on this project  to collect  its material. We showed this project to our HOD, but they refused this project . so we left the decision to make it. Then we selected the bank security using password and IR senosors.

 

Time Module:-

Stages

Detail

Module Leader

Target Date

Collection of Circuit Diagram & study material

In this duration we will collect the study material for micro controller & circuit , so that we can add maximum features in our circuit & make it reliable

 

10th feb

Collection Of components & Equipments

In this module we will arrange the components & will arrange the programming kit for microcontroller

 

28th  feb

Programming

In this module we  will make the program

 

15th  march

Checking of circuit on breadboard

In this module we will check the circuit on breadboard , so that we can check the circuit .in this module we will do changes in the circuit if required

 

30th march

PCB designing

In this module we will design the PCb with orcad

 

10th april

Component soldering

In this module we will solder the components on circuit  with soldering iron

 

20th april

Rework

In this module we will do thwe rework  & troubleshooting

 

22 April

Final testing

In this module we will show & test the project to ensure its working

 

25 th April

Report Preparation

In this module we will make the project report & will prepare for presentation

 

30th April

Hardware required-

8051 programmer universal kit

CRO

Digital multimeter

Software required:

Keil software

ORCAD for PCB design

Proteus for simulation

 ADVANTAGES

        Low cost

        Reliable

        Portable

        Flexible  due to microcntroller

        Easy to use- system is very easy to understand

Features-

Wireless system

LCD display

GSM  technology

Hardware required-

8051 programmer universal kit

CRO

Digital multimeter

 

Software required:

Keil software

ORCAD for PCB design

Proteus for simulation

COMPONENTS REQUIRED

MICROCONTROLLER 89C051

DTMF DECODER CM8870

DECODER IC 74LS154

IC 4049

RELAYS- 180 OHM 12V

RESISTANCES- 100OHM,22K,220K,330K

CAPACITORS- 1000F,470F,33PF,1F

TRANSFORMER 12 V

REGULATOR- 7805

TIMER NE555

DECADE  COUNTER IC 4017

ELECTRICAL SWITCHES

PLYBOARD

COPPER CLAD BOARD

FECL3

AREA OF APPLICATION:

1)     In our agriculture field

2)     In our residential areas

 

SUMMARY:

The main summary of the project is to control the our AC MOTOR through mobile in our fields.

 

Bibliography:

 

www.mcuprojects.com

www.cornoluniversity/ece/mobile.html