that will successfully do this

1. BATCH NO :6
BATCH MEMBERS:
S.Kavibalan-912514105006
G.Abinesh-912514105301
R.Manivannan-912514105307
GUIDED BY
Mr.P.Manicka pandian,M.E.,
ASST.PROF/EEE
SRRCET-KARAIKUDI
AUTOMATIC WIRELESS WATER LEVEL CONTROL
AND
NO LOAD PROTECTION USING RF MODULE
8/30/20181

2. OBJECTIVE
To maintain the water in water storage tank and protect
no load condition in motor control by using RF signal
 In this system, one can save manpower, water and
power consumption is reduced by 20% and 30%
 Improve motor performance
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3. LITERATURE SURVEY
AUTHOR NAME TITLE YEAR OF PUBLISED AUTHOR’s REVIEW
Muhammad Automatic water level
control
2010 A simple approach to
Irrigation control problem
using Artificial Neural
Network Controller.
Jyothipriya GSM based Zigbee Control 2012 That Controlled Solenoid
Valve for drip irrigation
system proves to be a real
time feedback control
system.
Priyanka Processor based water level
control
2013 involves some sensors, LCD
display, GSM and ARM
processor.
8/30/20183

4. INTRODUCTION
•Here we have used RF433 MHz modules to make wireless
communication between transmitter and receiver.
Transmitter send the signal from the encoder output.
•Motor on and off control to use pressure switch model with
control weight. Using this model, we can control the motor
within the range of 300 meter distance.
•This project has two sections, one is transmitter section and
the another is receiver section.
•At transmitter section, we use HT12E encoder and at
receiver section, we use HT12D decoder.
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5. EXISTING STRUCTURE
• Wire based water level control.
• That construction will be wire connecting to water tank and controller.
• No load protection is not present.
• Microcontroller and microprocessor are present to process the
function of water level control for wireless water level controller.
• Cost is high.
8/30/20185

6. PROPOSED STRUCTURE
• In our project there has to be make wireless communicatin and
water level will be control.
• And implement the no load protection system.
• Remove the microprocessor and microcontroller unit to process the
function of water level control and no load.
• Pressure switch and flow switch to reduce the complex of the
function and achieve low cost
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7. TRANSMITTER CONSTRUCTION
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8. RECEIVER CONSTRUCTION
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9.  Pressure switch communicate to the water and two level of
water position is change to the switch position on and off
condition.
 A pressure switch is a form of switch that closes an
electrical contact when a certain set fluid pressure has been
reached on its input.
 The switch may be designed to make contact either on
pressure rise or on pressure fall.
 Pressure switches are widely used in industry to
automatically supervise and control systems that use
pressurized fluids.
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10. BLOCK DIAGRAM
TRANSMITTER
ENCODER PRESSURE
SWITCH
WATER
FLOW
SENSOR
POWER
SUPPLY
TRANSMITTER
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11. COMPONENTS
HT12E ENCODER IC
433MHz TRANSMITTER
5V POWER SUPPLY
PRESSURE SWITCH
FLOW SWITCH
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12. TRANSMITTER
That circuit constrct on encoder,transmitter,water flow
sensor and pressure switch connection.
Water level control on pressure switch and switch
moment will be control by level of water.
Water Flow sensor to monitoring the flow of water will
be monitoring the load.
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13. ENCODER PIN DIAGRAM
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14.  Simply put, HT12E converts the parallel inputs into serial
output. It encodes the 12 bit parallel data into serial for
transmission through an RF transmitter.
These 12 bits are divided into 8 address bits and 4 data bits.
 HT12E has a transmission enable pin which is active low.
When a trigger signal is received on TE pin, the programmed
addresses/data are transmitted together with the header bits via
an RF or an infrared transmission medium.
HT12E begins a 4-word transmission cycle upon receipt of a
transmission enable. This cycle is repeated as long as TE is
kept low. As soon as TE returns to high, the encoder output
completes its final cycle and then stops.
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15. VDD and VSS: Positive and negative power supply pins.
OSC1 and OSC2: Input and output pins of the internal
oscillator present inside the IC.
TE: This pin is used for enabling the transmission, a low
signal in this pin will enable the transmission of data bits.
A0 - A7: These are the input address pins used for secured
transmission of this data. These pins can be connected to
VSS or left open.
AD0 - AD3: This pins are feeding data into the IC. These
pins may be connected to VSS or may be left open for
sending LOW or HIGH bits to the encoder.
DOUT: The output of the encoder can be obtained
through this pin and can be connected to the RF
transmitter. 8/30/201815

16.  A pressure switch is a type of level sensor, a
device to detect the level of water within a tank.
The switch may be used to control a pump. One
type of pressure switch uses a single pole double
throw switch (SPDTS) inside a two type of
mechanism is control the switch position.
 A very common application is in water pumps
where the switch detect the rising level of water in
the tank and energizes an electrical pump which
then pumps water out until the level of the water
has been substantially reduced, at which point the
pump is switched off again.
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17.  Flow Switch is a mechanical switch that is switched on or off
in response to the flow or non-flow of a fluid such as air or
water. The switch typically operates through the use of a
paddle which gets displaced due to the force of fluid moving
past it.
 Flow switch is a special electric device with a very simple
design and of a small size. But despite of its simplicity, flow
switch plays important role in motor no load protection.
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18. BLOCK DIAGRAM
RECEIVER
DECODER
MOTOR
CONTROL
RELAY
TIMER
CIRCUIT
POWER
SUPPLY
RECEIVER PROTECTION
RELAY
8/30/201818

19. COMPONENTS
HT12D DECODER IC
433MHz RECEIVER
12V POWER SUPPLY
RELAY UNIT
TIMER UNIT
8/30/201819

20. RECEIVER
 This circuit construct on decoder,receiver,control
relay,protection relay and timer circuit connection.
Water level control on pressure switch and switch moment
will be control by the level of water that signal receive in
receiver and decode the signal to operate the relay.
Water Flow signal receive to decode and process the relay.
And time delay between motor on, sensor sense the water
flow compensate the timer unit.
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21. DECODER PIN DIAGRAM
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22. In simple terms, HT12D converts the serial input into
parallel outputs. It decodes the serial addresses and data
received by, say, an RF receiver, into parallel data and
sends them to output data pins
. The serial input data is compared with the local
addresses three times continuously.
 The input data code is decoded when no error or
unmatched codes are found. A valid transmission in
indicated by a high signal at VT pin.
HT12D is capable of decoding 12 bits, of which 8 are
address bits and 4 are data bits. The data on 4 bit latch
type output pins remain unchanged until new is
received.
8/30/201822

23. VDD and VSS are used to provide power to the IC,
Positive and Negative of the power supply respectively. As
I said earlier its operating voltage can be in the range 2.4V
to 12V
OSC1 and OSC2 are used to connect external resistor for
internal oscillator of HT12D. OSC1 is the oscillator input
pin and OSC2 is the oscillator output pin as shown in the
figure below.
A0 – A7 are the address input pins. Status of these pins
should match with status of address pin in HT12E
(used in transmitter) to receive the data. These pins can
be connected to VSS or left open.
8/30/201823

24. DIN is the serial data input pin and can be connected to a
RF receiver output.
D8 – D11 are the data output pins. Status of these pins can
be VSS or VDD depending upon the received serial data
through pin DIN.
VT stand for Valid Transmission. This output pin will be
HIGH when valid data is available at D8 – D11 data output
pins
8/30/201824

25.  Timer unit is connected between motor relay and
protection relay. It operate to compensate the time delay
for water income of tank.
 Timer unit input is connected in water level pressure
switch and it operate in 0-120 second adjustable time.
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26.  Relay is a switching device that operate to 12v DC
input and control to 230v AC input. Two relays used in
this project one is motor control relay another one is
motor protection relay.
 Two relays control voltage are connected in series
connection.
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27. It is low cost because without microprocessor and
microcontroller.
Working distance is 500m operation is possible.
It is easy operation and long life.
Simple construction.
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28. REFERENCES
1.Christian Reinisch., Wolfgang Kastner., Georg
Neugschwandtner., and Wolfgang Granzer., “Wireless
Technologies in Home and Building Automation”, 5th IEEE
international conference on Industrial Informatics, Vol. 1,
pp.93-98, 2007
2. Y unpeng Liu., and Chen yang., “Based on GSM Network
of Intelligent Telemetry Water System”, International
Conference on Electronics and Optoelectronics, Vol.2,
pp.220-222, 2011.
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29. THANK YOU
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