DESIGN & CONSTRUCTION OF AN AUTOMATIC GARDEN WATER SPRINKLER

INTRODUCTION
Sprinkler has an established place in gardens and in irrigation and with as many different water effects as possible. A revolving water sprinkler that has single or more arms those revolves and shoots water. By revolving water sprinkler it is very easy for watering in a garden. It saves time, cost and labour.
OBJECTIVES
I would mention the following objectives as my project-
1.Design of garden water Sprinkler.
2.Construction of garden water sprinkle.
METHODOLOGY
I want to follow the following steps-
1.Study of the theory
2.Study of the various types of sprinkler.
3.Design of nozzle.
4.Design of sprinkler.
5.Select the material for nozzle & frame.
6.Construction and testing of sprinkler.

WORKING PRICIPLE
Revolving water sprinkler is constructed based on the basic
theories of fluid mechanics, such as Continuity equation,
Bernoulli’s equation and impulse momentum equation.
A metallic stand which holds the bearing at the top of the stand
and the pipe through water enters the nozzle. The end of the
Nozzle will be bent about 45 degree for maximum throwing of
water & cover maximum area of the garden. The entering water
with high velocity which revolves pipe due to reaction force.
ADVANTAGES
Suitable to all types of soil except heavy clay
Suitable for irrigating crops where the plant population per unit area is very high. It is most suitable for oil seeds and other cereal and vegetable crops
Water saving
Closer control of water application convenient for giving light and frequent irrigation and higher water application efficiency
Areas located at a higher elevation than the source can be irrigated
Possibility of using soluble fertilizers and chemicals

COMPARISON
Revolving Sprinkler: Spraying water at a fixed circle, so it can not cover whole area of the garden.
Impulse or Impact Sprinkler 450 nozzle angle:
Water reaches maximum distance but water leakage is very high.
Impulse or Impact Sprinkler parallel nozzle:
Water can not reach so far, but water leakage is very less.

IMPROVEMENT
For improving the garden sprinkler we have must control the flow of water. So we will be used microcontroller program to control the stepper motor for rotating the sprinkler at different angles to cover the whole area of the garden.
Also we will be controlled the water flow by controlling the solenoid valve with timer.