RESULT

RESULTS AND DISCUSSION

A system to effectively monitor & control the agricultural farm weather condition using LabVIEW is setup. The system can monitor & control the farm weather parameters such as temperature, humidity, and light and soil moisture content. The main advantage of system using labVIEW is that it has high accuracy. Since the system has simple front panel, the user can easily monitor & control the atmospheric condition. Moreover, the system is very simple as compared to other microcontroller system.

The centralised farm automation system is developed by using LabVIEW. For making the monitoring and controlling more easily, each parameter is designed under different tab.

9.1 TAB CONTROL

Tab controls to overlap front panel controls and indicators in a smaller area. A tab control consists of pages and tabs. We can add front panel objects to the pages of the tab control and use the tab as the selector to display each page. A page is active when the tab for that page is flush with the page and the objects on the page are visible. Terminals for controls and indicators you add to the tab control appear as any other block diagram terminal.

1

3

5

4

2

 

Fig 9.1.1: TAB Control

1.     GENERAL Tab

2.     TEMPERATURE Tab

3.     HUMIDITY Tab

4.     LIGHT INTENSITY Tab

5.     MOISTURE Tab

Each tab is designed in such a way to monitor the single parameter, but the GENERAL tab is the default tab and can monitor all the parameters at the same time.

9.2 GENERAL TAB:

Fig. 9.2.1: Front panel of GENERAL Tab

GENERAL Tab window consist of Waveform chart, process variable indicators and stop button. GENERAL Tab is the default tab which will run, when no other tab is selected to monitor the parameters. The process values of each parameter can be monitored using numerical indicators and waveform chart. This makes monitoring more accurate.

a) Waveform Chart

       TEMPERATURE Vs TIME Chart is designed to plot graph for the different values of temperature. It is calibrated in terms in terms of degree Celsius.

       HUMIDITY Vs TIME Chart is designed in such a way to display the variation in atmospheric humidity.

       LIGHT INTENSITY Vs TIME Chart is designed to plot the graph proportional to the variation in the light intensity. Its unit is candela (Cd).

       SOIL MOISTURE Vs TIME Chart indicates the presence of water content in the soil. Variation in soil moisture is plotted.

b) Process variable indicators

       Numerical indicators are used to display the process values of Temperature, Light intensity, Relative humidity and Soil moisture.

c) Stop button

       Stop button is used to stop the execution of the program and thereby to stop the execution of the parameters.

Fig 9.2.2: Block diagram of General tab

9.3 TEMPERATURE TAB:    

Fig 9.3.1: Front panel for TEMPERATURE Tab

Fig 9.3.2: Block diagram of temperature tab

a) Waveform Chart

       TEMPERATURE Vs TIME Chart is calibrated in such a way to plot the atmospheric temperature in terms of degree Celsius.

b) Thermometer

       Thermometer is calibrated and arranged in such a way to indicate the temperature in degree Celsius as similar to the temperature indicated by mercury in thermometer.

c) Control Parameters panel

       Control Parameters panel is designed and arranged in such a way to set the Set point temperature and to display the process variable and manipulated variable.

9.4  HUMIDITY TAB:

a) Waveform Chart

       RELATIVE HUMIDITY Vs TIME Chart is calibrated in such a way to plot the atmospheric humidity in terms of RH %.

b) Control Parameters panel

       Control Parameters panel is designed and arranged in such a way to set the Set point humidity and to display the process variable and manipulated variable.

c) HIGH and LOW indicators

       Indicators are used to indicate HIGH when the Relative humidity (process variable) rises above the set point value and indicate LOW when the Relative humidity decreases below the set point value.

d) Humidity meter

       Humidity meter is used to indicate the relative humidity in a calibrated scale using a needle or pointer.

Fig 9.4.1: Front panel of HUMIDITY Tab

Fig 9.4.2 : Block diagram of Humidity tab

9.5 LIGHT TAB

Fig 9.5.1: Front panel of LIGHT INTENSITY Tab

Fig 9.5.2 : Block diagram of Light intensity tab

a) Waveform Chart

       LIGHT INTENSITY Vs TIME Chart is calibrated in such a way to plot the variation in the light intensity with respect to time.

b) Control Parameters panel

       Control Parameters panel is designed and arranged in such a way to set the Set point value of light intensity and to display the process variable and manipulated variable.

c) HIGH and LOW indicators

       Indicators are used to indicate HIGH when the light intensity (process variable) rises above the set point value and indicate LOW when the light intensity decreases below the set point value.

9.6  MOISTURE TAB:

a) Waveform Chart

SOIL MOISTURE Vs TIME Chart is calibrated in such a way to plot the variation in the soil moisture with respect to time.

b) Control Parameters panel

Control Parameters panel is designed and arranged in such a way to set the Set point value of soil moisture and to display the process variable and manipulated variable.

c) HIGH and LOW indicators

Indicators are used to indicate HIGH when the soil moisture (process variable) rises above the set point value and indicate LOW when the soil moisture decreases below the set point value.

Fig 9.6.1:Front panel of MOISTURE Tab

Fig 9.6.2: Block diagram of Soil moisture tab

CHAPTER 10

ADVANTAGES AND DISADVANTAGES OF THE FARM AUTOMATION SYSTEM

ADVANTAGES

-        The system is user friendly.

-        Use of LabVIEW software reduces wired circuit

-        Hardware failure is very rare compared to embedded system.

-        Monitoring the farm parameter through the system is very easy task.

-        For further control of parameter, the LabVIEW software is helpful.

-        It gives continuous display.

DISADVANTAGE

-        The cost of the system is more compared to embedded system.

CHAPTER 11

FUTURE SCOPE

·     The importance of agricultural field is getting more relevant during these recent days. It will rise also in the future. So the system can be enhanced for controlling the atmospheric condition.

·     It can be implemented in any variety of plantations.

·     Centralised monitoring can be done effectively in the case of a wide area plantation.

·     This system can be installed in place where any of the parameters such as light, humidity, temperature, soil moisture is controlled.

CHAPTER 12

CONCLUSION

A throughout study has been made about LabVIEW. Using this project atmospheric temperature, relative humidity, light and soil moisture presence can be detected & monitored. This Centralized farm automation system which automatically monitors & control the farm is a better development in the field of agriculture because it has wide application which is relevant in the modern society.

It can be produced in the market in wide range with high accuracy. By doing this project what we have tried to do is to make just a demo of it. The most difficult part of the project was to calibrate the sensor output. It is done in maximum possible extend. With this we are concluding this main project.

BIBLIOGRAPHY

·       www.alldatasheets.com

·       www.ni.com

·       Virtual Instrumentation using LabVIEW  -  Sanjay Gupta & Joseph John

·       www.wikipedia.org