This document summarizes a seminar presentation on automation in greenhouses. It discusses how greenhouses can automatically control climatic factors like temperature, humidity, light, and water through the use of sensors, a microcontroller, and actuators. Sensors measure parameters like temperature, humidity, light, and soil moisture. The microcontroller constantly monitors sensor readings and activates devices like pumps, coolers, and lights to optimize growing conditions. An automated irrigation system can precisely control water volume and timing. Automation increases crop yields and quality while reducing costs.

2. Dr.Budhajirao Mulik College of Agricultural Engineering & Technology,
Mandki-Palvan
A
Seminar on
“AUTOMATION IN GREENHOUSE”
Presented by
Ghule Aniket Shivram
ENMPU140671

3. Points to be covered
• Introduction
• Objectives
• Climatic factors
• Components of system
• Working
• Advantages

4.  Greenhouses form an important part of the agriculture and
horticulture sectors in our country.
 They can be used to grow plants under controlled climatic
conditions.
 Automatic monitoring and controlling of the climatic parameters
which directly or indirectly govern the plant growth and hence
their production.

5. Major Component Of Climate:
 Light
 Temperature
 Humidity
 Wind
 Rainfall

6. A Greenhouse Can Control
• Heat – Attempt to prevent freezing or overheating – for tomatoes
and other warm weather vegetables, some horticulturalists assume
no growth occurs below 50°F (10°C) or above 86°F (30°C),
blossoms may drop off if temperature is above 85°F (29°C)
• Water – No direct rainfall on soil inside the greenhouse, so
irrigation must be provided, water volume and timing can be
controlled to optimize growth

7. • Light – Any covering will block some percentage of light (or
particular wavelengths of light) available to plants – shading may
be beneficial when too hot
• Air Flow and Humidity – If the greenhouse is totally enclosed,
humidity will increase. Blossoms may drop off some plants at
extreme low or high humidity.

8. Types of Automated Irrigation System
• Volume-Based Automated Irrigation System
• Time Based Automated Irrigation System
• Real Time Feedback System or Sensor based system

9. Components
 Sensors
 Microcontroller
 Liquid Crystal Display
 Actuators – Relays
 Devices controlled
1. Water pump
2. Sprayer
3. Cooler
4. Lights

10. Microcontroller
• The microcontroller is the heart of the automatic greenhouse control
system.
• It constantly monitors the digitized parameters of the various sensors
and verifies them with the predefined threshold values
• A microcontroller is a general purpose device, but that is meant to read
data, perform limited calculations on that data and control its
environment based on those calculations.
• It activates the actuators to perform a controlled operation.

11. Fig: Microcontroller

12. Sensors
This part of the system consists of various sensors namely
1. Temperature & Humidity sensor
2. Light sensor (LDR)
3. Moisture sensor

13. Temperature & Humidity sensor
• A temperature and humidity sensor is a device that provides the
temperature and humidity measurement at a given time.
• It uses a capacitive humidity sensor and a thermistor to measure
the surrounding air, and spits out a digital signal on the data pin.
• It is fairly simple to use.

14. Fig. : Temperature and humidity sensor

15. Light sensor
• A photoresistor or light-dependent resistor(LDR) or photocell is
a light-controlled variable resistor.
• The resistance of a Photoresistor decreases with increasing
incident light intensity; in other words, it exhibits photoconductivity.
• A light dependent resistor is a small, round semiconductor.

16. Fig: Light Sensor

17. Moisture sensor
• Soil moisture sensor is the device which measures the content of
water in the soil.
• Soil moisture measurement is important to help farmers manage
their irrigation systems.
• It consists of two probes which are used to measure the volumetric
content of water.

18. Fig: Moisture Sensor

19. Relays
• A relay is an electrically operated switch.
• They are used to turn on AC devices such as motors, coolers, pumps,
sprayers.

20. Solenoid valve
• A solenoid valve is an electromechanical device in which
the solenoid uses an electric current to generate a magnetic field.
• Multiple solenoid valves can be placed together on a manifold.

21. Water timer
• A water timer is an electromechanical device that, when placed on a
water line, increases or decreases the water flow through the use of
an embedded valve.
• It is used in conjunction with irrigation sprinklers to form
an automated or non-automated sprinkler system.

22. LCD Display
• A liquid-crystal display (LCD) is a flat-panel display.
• It is used to show outputs.

23. Jumper Wires
• A jump wire is an electrical wire, or group of them in a cable, with a
connector or pin at each end, which is normally used to interconnect the
components
• Individual jump wires are fitted by inserting their "end connectors" into the
slots provided in a breadboard, the header connector of a circuit board, or a
piece of test equipment.

24. Source: www.circuito.io
VCC TO ARD 3.3
SLCK TO ARD 13
CS TO ARD 3
RST TO ARD 5
DC TO ARD 5
DN TO ARD 11

26. Working :

27. Advantages
• Increases fertility
• Better productivity
• Increase in quality of crop
• Percentage of germination of seeds is high in green house
• Decrease labour cost

28. References
• www.wikipedia.org
• www.dripworks.com
• www.google.com
• www.circuito.io

29. Thank you