Download automatic control in plant irrigation according to soil moisture

Trakia Journal of Sciences, Vol 1, No 4, pp 31-32, 2003
Copyright © 2003 Trakia University
Available on line at:
http://www.uni-sz.bg
ISSN 1312-1723
Original Contribution
AUTOMATIC CONTROL IN PLANT IRRIGATION ACCORDING TO SOIL MOISTURE
CONTENT
İsmail Becenen
Trakya University , Edirne Vocational College , Electrical Programme, Turkiye
ABSTRACT
The aim of this study is to increase the amount of production by giving the plants enough water and is
to prevent absorbing more water unnecessarily. Moreover, soil and plants are irrigated by automatic
controlled system according to soil moisture content by adjusting circuits which are used depending on
kinds of plants.
Key words: Automatic Irrigation, Moisture Content, Production
INTRODUCTION
Today, automatic controlled irrigation should
be done according to soil moisture content,
especially in greenhouse, garden etc irrigation
instead of classical irrigation systems. Using
automatic controlled irrigation provides time
and water saving, and plants absorb water
they need. As a result, the amount of the
production increases (1-4).
Water amount used in agricultural
irrigation is approximately 2/3 of world water
consumption.
Productivity is increased if irrigation is
done suitable for agricultural irrigation
method. If we consider that world population
increases rapidly, in parallel, agricultural
production should also increase.. Increasing
agricultural production can be possible by
enlarging irrigation area. Because of this, it is
necessary increasing effective irrigation,
doing it consciously and giving sufficient
water to the soil for the plant. This will be
done by using automatic controlled irrigation.
Irrigation is done automatically, as shown
in Figure 2, whenever plants need water. It is
necessary to plan irrigation system, to install
it and to define the principles of execution in
order to manage irrigation effectively. If it
can’t be done automatically according to soil
moisture content, irregular water distribution
occurs in soil, some parts contain more water
*Correspondence to: İsmail Becenen, Trakya
University , Edirne Vocational College , Electrical
Programme, Turkiye
than other. For that reason, these both
situations effect plants negatively. It is
obvious that the facilities of using irrigation
methods should be supplied for farmers who
are among
800 000 hungry people in the
world.
MATERIALS AND METHODS
Circuit Diagram and Its Execution
Figure 1 shows feed circuit used in
automatic irrigation according to moisture
content.
Figure 2 shows irrigation circuit according
to moisture content.
RESULTS AND DISCUSSION
Examining the running of a circuit; ULN
2803 integration having opamp is an
integration with transistor output . Prop points
which provides transmission in soil are the
number 6,7,8 points of integration . These
points are used with positive (+) voltage. A
potential difference occurs between input
points of integration and positive (+) point
and the roll gains energy and closes circuit.
Solenoid valves gains energy and water
running starts. When sufficient irrigation is
done , between positive (+) voltage and
irrigated input points , roll as positive input
points stays without energy because of water
in soil and opens circuit and solenoid valves
stay without energy, so water running to soil
stops..
31
I. BECENEN
CONCLUSIONS
This circuit has an adjustable characteristic
of input sensibility and provides needed
irrigation to soil automatically. We can do
manual irrigation by pressing buttons in this
circuit. This circuit works whenever the soil
needs water, otherwise it doesn’t work. This
circuit protect itself at high current and
tension, and alert lead blinks as a warn. If
automatic controlled soil irrigation is done
by this circuit, the amount of production will
increase.
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REFERENCES
1. The TTL Data Bokk for Desing
Engineers,Texas Insturments
2. MOS G.L. , Tocci R.J., Digital Systems
Principles and Applications , 1991
3. Şensoy R., Ercan Ö., Cangir A. O.,
Elektronik Atölye II , 1991
4. Serçe S., Analog Elektronik Deneyleri,
1990
Trakia Journal of Sciences, Vol 1, No 4, 2003
I. BECENEN
Trakia Journal of Sciences, Vol.1, No 2, 2003