Water Level Management Using Ultrasonic Sensor(Automation)

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© 2018, IJCSE All Rights Reserved 799
International Journal of Computer Sciences and Engineering Open Access
Research Paper Vol.-6, Issue-6, June 2018 E-ISSN: 2347-2693
Water Level Management Using Ultrasonic Sensor(Automation)
Kodathala Sai Varun1, Kandagadla Ashok Kumar2, Vunnam Rakesh Chowdary3, C. S. K. Raju4
1,2,3Electronics and Communication Department, GITAM Deemed to be university, Bengaluru – 561203, India
4Department of mathematics, GITAM Deemed to be university, Bengaluru – 561203, India
Available online at: www.ijcseonline.org
Accepted: 08/Jun/2018, Published: 30/Jun/2018
Abstract- Majority of earth‟s surface is covered with water but less than
5% is useful. So water conserving has become a major issue so certain
water management steps are to be taken. Measuring water level is an
important task from government and residence side. Thus, existing
management systems has to be updated [1]. In this paper, we investigate
the water level management using ultrasonic sensor which detects the
amount of water present in the tank and returns the percentage of water
present in it. This system has an Arduino, motor pump, LCD display,
over-head tank, resource tank, buzzer and an LED. All components are
interfaced with the Arduino and works by automation as per uploaded code. We divided the over–head tank by mean of
percentages likely 10%, 20%...100%. 10% is the condition of the tank where the quantity of water present in it is very less and
finally 100% is maximum condition. We have to monitor and maintain the tank when the water in it is getting less, but in this
we make use of a buzzer so whenever the water level percentage is about 10% the buzzer, makes sense and automatically the
relay based motor starts and standstill up to reach of 100% of the tank. So no one is required to monitor the tank and for
switching of the motor. The main thing we employed is echo, which can be easily understood by an example consider you are
in a silent cave when you produce sound you will listen the same thing by high intensity and this is called echo. Like example
the ultrasonic sensor has two small openings on it. In which one opening sends the high frequency sound pulse called as
ultrasonic waves like a small speaker (sender) and other opening receives them like a small microphone (receiver) [2] the
explanation can be better understood by fig (1).
Keywords- Ultrasonic waves, echo, trig, Arduino, smart water, water level management, automation, relay, water level, trig,
echo.
I. INTRODUCTION
The water level management has been a major issue so new
methods has to be adopted to control the water level. Here
our proposed system works better than existing system.
Existing system: The existing system works with many
number of wires let us take a tank which is divided into
percentages like 10%,20%, . . . 100%. Every wire is of
different size kept at different percentages of the tank [3]. If
the water present in the tank is 10% the water touches only
one wire so LCD returns the amount of water present in it.
This take much time in implementation. As water touches
the wires may get damaged.
fig (2): existing system.
The above figure fig (2) shows the existing water level
management system here in this system they hang the wires
into water and each wire is connected to an LED. here the
water is touching all 7 wires so the wire 7 returns that water

International Journal of Computer Sciences and Engineering Vol.6(6), Jun 2018, E-ISSN: 2347-2693
© 2018, IJCSE All Rights Reserved 800
in tank is maximum the LED connected to the wire 7 will
glow up, likely when the water level is only touching wire 1
similarly the connected LED will glow up and we will know
the percentage of water present in the tank [4].
Proposed system: Here we‟ll present the basic idea of our
proposal. This proposed system works under automation and
contains the components like Arduino [5], ultrasonic sensor,
motor pump, relay, led, buzzer and LCD in which each
component has its own functionality but Arduino looks like
heart of the project as all the components are interfaced with
Arduino. The ultrasonic sensor plays major role in
determining the water level present in the tank. This sensor
is fitted under the lid of the tank and uses the concept called
„echo‟. The sensor contains two small openings called trig
and echo. The trig works like a small speaker in which it
sends the ultrasonic waves and the echo acts as a small
microphone [6] in which it receives the reflected waves
which are sent by trig and this echo returns the distance. So
by this we are known of water level in the tank through
LCD. Another advantage of this proposed system is motor
automation. We have designed a code that whenever the
tank is getting low about of 10% the motor automatically
starts and stops when the tank reaches to 90% so here no one
required for controlling to motor this is the main advantage
of proposed system. Since no component touches the water
there is no chance of damage to the components whereas in
the existing system contains wires that are placed in water
which may cause damage.
The next coming part is working where the working the
proposed system and circuit diagrams are explained and
followed by observations in which main observations of this
are written and followed by conclusions and references.
II. WORKING
The proposed system works making use of ultrasonic sensor
to detect the water level in terms of percentage. As
explained before ultrasonic sensor has two apparatus namely
trig and echo. Trig is used to emit a sound wave to an object
as it is known that when a sound wave strikes an object it
bounces back with equal or more intensity which is called as
echo. Echo part of ultrasonic sensor detects the reflected
sound ray and returns the value according to that [7]. It
usually measures the time duration between trig and echo of
sound ray. The physical definition for velocity is defined as
the rate of change of distance with time. If we neglect
differentiation, velocity is given as ratio of distance to time.
In this proposed system, the sound ray travel 2 times (Trig &
Echo) [8].
  
 (1) [Normal definition]
   
 (2) [Proposed System]
from (2) „d‟ is given as
   
 (3)
From experimental data it is clear that velocity of sound in
air   
   
 (4)
The proposes system schematic diagram is given in fig (3)
fig (3): Schematic project diagram
Ultrasonic Sensor detection:
fig (4): Ultrasonic detection
Ultrasonic sensor detects the object and measures the
distance by following echo principle in this proposed
system, water is also considered as object when a sound ray
strikes water it results in generation of echo which is
detected by the echo part of ultrasonic sensor. The working
of ultrasonic sensor is given in fig (4). By measuring the
time duration distance is determined.
Steps required to monitor the results:
1. Scale preparation
2. Draft values
3. Measurement of time duration for complete tank
fill by pump with constant voltage input
4. Implementation
 Scale Preparation:
By considering scale, we can resolve the complete water
level in terms of percentages. The tank we measured without
parallax error is of 20 cm in which each 10 % is 2cm of
tank. The scale division in project is mentioned in fig (5)

International Journal of Computer Sciences and Engineering Vol.6(6), Jun 2018, E-ISSN: 2347-2693
© 2018, IJCSE All Rights Reserved 801
fig (5): Project scale division
 Draft values:
There will be no direct implementation of work without
drafting corresponding values. So it is mandatory to draft the
values before implementation. We managed to place a
ultrasonic sensor at the top of overhead tank and measured
the results using Arduino. After successful measurement of
results, we can impart these results for automation of water
level management. The results are given in Table (1).
Sl.no
Distance
detected by
Ultrasonic
Sensor
Percentage
1
21 cm
10%
2
19 cm
20%
3
17 cm
30%
4
15 cm
40%
5
13 cm
50%
6
11 cm
60%
7
9 cm
70%
8
7 cm
80%
9
5cm
90%
10
3cm
100%
Table (1): Draft
Values
 Measurement of time duration for complete tank
fill by pump with constant voltage input:
It is required to do one-time setup for this proposed system
that is calculation of time required for complete fill of tank
by the adopted pump with constant input from the start to
the end. According to this duration Motor turns on and off in
later cases without man power. We monitored the working
of DC 12V pump with two cases which are tabulated in
table (2).
Sl.No
Input Voltage
Time taken
1.
6V
13 min 28s
2.
10V
3 min 22 s
Table (2):
Voltage variation
 Implementation:
Implementation of work involves the circuit
implementation, working of each component
involved in the work. The circuit diagram is given
in fig (6)
fig (6): Circuit Diagram
Components used:
 DC 12V Pump
 5V 2 Channel Relay
 Piezo Buzzer
 LED
 Ultrasonic Sensor
 Arduino
 LCD
 Variable Resistor
5V 2 channel Relay is used as external switch for Arduino to
power external supply to the DC 12 V pump. Relay [9] is
usually in open condition it has continuous supply from
Arduino board when a program is given to switch off the
supply to relay then external switch is closed which powers
external supply to the DC pump which is placed in resource
tank. The relay is given in fig (7). The working of relay is
given in fig (8).

International Journal of Computer Sciences and Engineering Vol.6(6), Jun 2018, E-ISSN: 2347-2693
© 2018, IJCSE All Rights Reserved 802
A variable resistor also known as potentiometer [10]. It is
used to maintain the contrast level. It works by setting an
appropriate voltage between VCC and VEE it can‟t be done
using a single resistor. The value of potentiometer used is
10K ohms.
Conditions Required:
Condition 1: Pump must on when tank level is equal to 10%.
Condition 2: Tank must not be overloaded
Condition 3: Buzzer must on when tank reaches 10%
Condition 4: Green Led must glow when tank is above 90%
Condition 5: Red Led must glow when tank is below 10%
Condition 6: LCD must print tank levels
Program:
#include<LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 10, 11, 12, 13);
const int trigPin = 7;
const int echoPin = 6;
const int buzzer =5;
const int relay = 4;
const int red = 3;
const int green = 2;
float duration, distance;
void setup() {
lcd.clear();
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(buzzer, OUTPUT);
pinMode(relay, OUTPUT);
pinMode(red, OUTPUT);
pinMode(green, OUTPUT);
Serial.begin(9600);
lcd.begin(16,2);
}
void loop() {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration*.0343)/2;
lcd.setCursor(0,1);
if( distance < 22 && distance > 19)
{
lcd.print("TANK is 10%");
digitalWrite(buzzer,HIGH);
delay(2000);
digitalWrite(buzzer, LOW);
lcd.clear();
digitalWrite(red, HIGH);
digitalWrite(green, LOW);
}
if( distance < 20 && distance > 17)
{
lcd.print("TANK is 20%");
digitalWrite(relay,HIGH);
digitalWrite(red, LOW);
delay(2000);
lcd.clear();
}
if( distance < 18 && distance > 15)
{
lcd.print("TANK is 30%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 16 && distance > 14)
{
lcd.print("TANK is 40%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 14 && distance > 11)
{
lcd.print("TANK is 50%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 12 && distance > 9)
{
lcd.print("TANK is 60%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 10 && distance > 7)
{
lcd.print("TANK is 70%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 8 && distance > 5)
{

International Journal of Computer Sciences and Engineering Vol.6(6), Jun 2018, E-ISSN: 2347-2693
© 2018, IJCSE All Rights Reserved 803
lcd.print("TANK is 80%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
}
if( distance < 6 && distance > 5)
{
lcd.print("TANK is 90%");
digitalWrite(relay,HIGH);
digitalWrite(green, HIGH);
delay(2000);
lcd.clear();
}
if( distance < 5)
{
lcd.print("TANK is 100%");
digitalWrite(relay,HIGH);
delay(2000);
lcd.clear();
digitalWrite(green, HIGH);
}
if( distance > 20)
{
digitalWrite(relay, LOW);
delay(202000);
digitalWrite(relay,HIGH);
}
}
Project images are displayed in fig (9)
s
fig (9): Project Images
III. RESULTS
1. Water level is inversely proportional to the distance
measured by ultrasonic sensor [11].
2. Time duration is directly proportional to the distance.
3. Lesser time duration results in higher water level
4. High time duration results in lowest water level
5. Water level management is monitored for mentioned
conditions
IV. CONCLUSIONS
In the present situations, water necessity is very high.
Population is growing linearly day by day but the necessities
are not being fulfilled at the same rate. Among most
dangerous problems water scarcity is major issue we need to
resolve that problem at easiest way. The major problem
behind this issue is negligence of humans. Tanks are being
overloaded, due to improper maintenance this issue arises. So
when we adopt the technologies like proposed system we can
handle this issues [12]. Another aspect is that we are
developing in all fields the present generation require
automation for all this we need to adopt proposed system. The
system is in appropriate in the areas where sound rays are
produced with in the same frequency of ultrasonic sensor.
REFERENCES
[1] Yogita patil, Ramandeep Singh, “Smart tank Management System for
Residential Colonies Using Atmega 128A Microcontroller”,
International Journal of Scientific & Engineering Research, Volume
5, Issue 6, June-2014.

International Journal of Computer Sciences and Engineering Vol.6(6), Jun 2018, E-ISSN: 2347-2693
© 2018, IJCSE All Rights Reserved 804
[2] http://arduino-info.wikispaces.com/Ultrasonic+Distance+Sensor
[3] Asaad Ahmed Mohammedahmed Eltaieb, Zhang Jian Min,
“Automatic Water level control System”, International Journal of
Science and Research, volume 4 issue 12 December 2015.
[4] Partik Roy, “Construction of Digital Water Level Indicator and
Automatic Pump Control System”, International journal of research,
volume-3 issue-13 September 2016.
[5] http://arduino-info.wikispaces.com
[6] https://components101.com/ultrasonic-sensor-working-pinout-
datasheet
[7] Beza Negash Getu, Hussian A. Attia, Automatic Water Level Sensor
and Controller System, IEEE volume-1 issue-3 2016.
[8] https://circuitdigest.com/microcontroller-projects/arduino-ultrasonic-
sensor-based-distance-measurement
[9] J.A Jodice, “Relay Performance Testing”, IEEE, volume- 12 issue- 1,
1997.
[10] https://www.electronics-tutorials.ws/resistor/potentiometer.html
[11] Abhishek Saini, Shikhar Rana, Simranjeet Singh, Mohit, Harpreet
Kaur Channi, “Designing and Modeling of Water Level Indicator”,
International Journal of Scientific Research in Computer Science,
Engineering and Information Technology,
Volume 2, Issue 6, November-December 2017.
[12] Supriya R. Khaire, Revati M. Wahul, “Water Quality Data Transfer
and Monitoring System in IOT Environment: A Survey”,
International Journal of Scientific Research in Computer Science,
Engineering and Information Technology, Volume 2, Issue 6,
November-December 2017.
Authors Profile
KODATHALA SAI VARUN, pursuing B.Tech degree (ECE
Branch) in GITAM (Deemed to be University), Bengaluru campus.
Participated in National Mathematics Day-2017 competition held in
GITAM campus acquired first in poster presentation made on
“Mathematical Model of Web Page Ranking” in group. Awarded by
Prof. A S Vasudeva Murthy. Presented three papers as main author,
published one research paper entitled “Mathematical treatment of
enzyme kinetics using differential method” in IJARIIT, volume-4,
issue-2, 2018.
KANDAGADLA ASHOK KUMAR, pursuing B.Tech degree (ECE
Branch) in GITAM(Deemed to be University), Bengaluru campus
Participated in National Mathematics Day-2017 competition held in
GITAM campus acquired first in poster presentation made on
“Mathematical Model of Web Page Ranking” in group. Awarded by
Prof. A S Vasudeva Murth . Presented three papers as co-author,
published one research paper entitled “Mathematical treatment of
enzyme kinetics using differential method” in IJARIIT, volume-4,
issue-2, 2018.
VUNNAM RAKESH CHOWDARY, pursuing B.Tech degree
(ECE Branch) in GITAM (Deemed to be University), Bengaluru
campus. Participated in National Mathematics Day-2017 competition
held in GITAM campus acquired first in poster presentation made on
“Mathematical Model of Web Page Ranking” in group. Awarded by
Prof. A S Vasudeva Murthy. Presented three papers as co-author,
published one research paper entitled “Mathematical treatment of
enzyme kinetics using differential method” in IJARIIT, volume-4,
issue-2, 2018.
This is Dr. Chakravarthula S K Raju, Obtained M.Sc (Applied
Mathematics) from S.V.University, Tirupathi, India and completed
Doctrol degree in VIT University, Vellore. I publshied 3 books (one
main author and 2 co-author) and 30 research articles in peer
revviewed ISI indexed international journals. As of now I had
experience with theoretcial simulation of nanofluid, ferrofuild, non-
Newtonain fluids with numerical modelling with C, Mathematica,
MATLAB. I also worked as a reviewer of various interntional
journals Plos One, Journal of Molecular Liquids, Informatics and
Medicine: Unblocked, International Journal of Mechanical Sciences,
Applied Mathematics and Computation, Advanced Powder
Technology, Chinese Journal of Physics, Journal of Nanofluids,
Alexandria Engineering Journal, Engineering Science and
Technology an international Journal, Ain Shams Engineering Journal,
Periodica Polytechnica Mechanical Engineering Journal and
Computer Methods and Programs in Biomedicine. I
presented/attended a research articles in National and International
conferences and workshops. When I was researcher received Best
researcher certification of appreciation from VIT university. At
present, I am working as a Assistant Professor in GITAM School of
Technology.