International Journal of Engineering Trends and Technology (IJETT) – Volume 34 Number 2- April 2016
Automatic Wireless SCADA System
Arvinder Singh Layal#1, Manan Shah#2, Deep Shah#3, Kashyap Joshi#4
#1
Student, Electronics and Telecommunication Engineering. NMIMS’s MPSTME.
Student, Electronics and Telecommunication Engineering. NMIMS’s MPSTME.
#3
Student, Electronics and Telecommunication Engineering. NMIMS’s MPSTME.
#4
Asst. Professor, Electronics and Telecommunication Engineering. NMIMS’s MPSTME.
Mumbai, India
#2
Abstract—Based on the modern requirements of the
industry the Wireless SCADA system has a great
application in many fields of industries. SCADA
(Supervisory Control and Data Acquisition System) is
a particular protocol in which the data is acquired as
well the data can be controlled using the GUI
designed on PC. SCADA will offer increased
flexibility and expandability for future technology
insertions.Wirelesscommunication
becomes
an
attractive option as communication network in some
cases, such as small amount of data communication
for extremely remote substation, remote debugging
temporarily for newly-built generation plants and
backup communication. The paper describes the
boiler application in which the sensors interfaced are
PIR, temperature, level and gas sensor. Sensors are
interfaced with the help of Arduino Mega and the data
that is being sent to the RTU (remote terminal unit)
via Zig-Bee Trans-receiver. The data received at RTU
is plotted on real time basis. The process can also be
controlled from the RTU.
Keywords—SCADA (Supervisory Control and Data
Acquisition), RTU (Remote Terminal Unit), Maker
plot, Zig-Bee.
I.
sensor (LM35), level sensor, PIR (Passive Infrared
Sensor) and gas Sensor (MQ2).
Each sensor
continuously monitors the data of the boiler and sends
the respective values to Arduino mega 2560. We have
connected Zig-Bee on Arduino 2560 that transmits the
data on receiver side that is the RTU. On the RTU
side, we have connected a Zig-Bee that receives the
data that is given to Arduino 2560. The data that we
received is plotted on the software called as Maker
Plot. The GUI is made such that it consists of a button
that terminates the process in case of any fault or
emergency.
[7]The
characteristic
is
short
distance
communication, low speed, low power dissipation,
and low cost. Application of Zig-Bee wireless
communication technology, makes that inconvenient
wire repeat can be avoided in the area of a home,
factory,
hospital,
etc.
Zig-Bee
wireless
communication technology will play an important role
in wireless sensor network (WSN). To satisfy the
demand of low power dissipation and low speed
among wireless communication devices a Zig-Bee is
used.
II.
SYSTEM DESCRIPTION
INTRODUCTION
A. Block diagram
[1]Supervisory Control and Data Acquisition
(SCADA) is a process control system that enables a
site operator to monitor and control processes that are
distributed among various remote sites. A properly
designed SCADA system saves time and money by
eliminating the need for service personnel to visit each
site for inspection, data collection/logging or make
adjustments. Supervisory Control and Data
Acquisition systems are computers, controllers,
instruments; actuators, networks, and interfaces that
manage the control of automated industrial processes
and allow analysis of those systems through data
collection .They are used in all types of industries,
from electrical distribution systems to food
processing, to facility security alarms. The properly
designed SCADA system saves time and money by
eliminating the need for service personnel to visit each
site for inspection, data collection /logging or make
adjustments.
We have designed a system that has a transmitter
and a receiver part. The transmitter part of the system
consists of four sensors that include temperature
ISSN: 2231-5381
Fig. 1 Block Diagram of Transmitter Section
1) [7]Sensors:
Temperature Sensor: Using an LM-35
Precision integrated circuit temperature
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International Journal of Engineering Trends and Technology (IJETT) – Volume 34 Number 2- April 2016
device with an output voltage linearly
proportional to the centigrade temperature.
Gas Sensor:We using an MQ-2 sensor
module used in gas leakage equipment's in
industries, are suitable for detecting LPG,
Butane, Propane, Methane, Alcohol, and
Smoke.
Level Sensor: Used Transistor BC547 based
circuit for implementing the level detection
circuit.
PIR Sensor: Used to detect motion by
receiving infrared radiation when a person
walks past the sensor it detects a rapid
change of infrared energy and send a signal.
5) SCADA Software (Maker Plot): Is a
windows software for plotting analog and
digital data generated by the microcontroller
and other devices with ASCII serial output.
No external hardware is required just a serial
communication from the microcontroller or
other devices to the Computer. It also has the
ability to create our own GUI interface for
monitoring the data and controlling the
process.
B. Circuit diagram:
2) Microcontroller: The Mega 2560 is a
microcontroller board based on the
ATmega2560. It has 54 digital input/output
pins (of which 15 can be used as PWM
outputs), 16 Analog inputs, 4 UARTs
(hardware serial ports), a 16 MHz crystal
oscillator, a USB connection, a power jack,
an ICSP header, and a reset button [7]. It
contains everything needed to support the
microcontroller; simply connect it to a
computer with a USB cable. Receives the
data from all the sensors and according to the
threshold set, the microcontroller will take
action autonomously.
3) Power supply:Uses a 12V DC supply for the
sensors, controllers and relay module and
230V AC supply for the electric sprinkler and
boiler. For regulating the voltage of the
supply to 5V a regulator IC is used known as
IC LM7805 [7].
4) Wireless transmitter:Frequency used is
2.4GHz. This module is interfaced with the
Arduino mega controller that sends the data
sensed by the sensors to the receiver section
wirelessly at a distance in the RTU.
Fig. 2 Block Diagram of Receiver
ISSN: 2231-5381
Fig. 3 Circuit diagram of the transmitter.
I.
Circuit description:The data that is sensed by
the sensor is given to the Arduino as there is
an inbuilt ADC present in the Arduino mega
we don’t require any external device to
convert the analog value into digital values.
10-bit ADC is present in Arduino mega.
According to the threshold value set if the
temperature increases or decreases then the
microcontroller will automatically take action
and switch ON or OFF the boiler so that
temperature stabilizes according to the
requirement of the process. During the
process taking place if the person or any
moving object comes in contact with the PIR,
the microcontroller will trigger an alarm. So
that the safety in the plant is maintained. The
gas sensor that is used for measuring the
Combustible Gas that is coming from the
boiler and according to the threshold value
the action will be taken so that the process
stabilizes. The data from Arduino mega is
given to Zig-Bee and Zig-Bee transfers the
data from the transmitter side to the receiver
side. As the working frequency of Zig-Bee is
2.4 GHz (citizen band). Now on the receiver
side another Zig-Bee is connected which
receives the data and gives it to the Arduino.
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International Journal of Engineering Trends and Technology (IJETT) – Volume 34 Number 2- April 2016
The graph of the readings is made on the
SCADA/HMI software Maker Plot.
III.
RESULTS
A. Makerplot results:
AUTOMATIC MODE: In this mode the
feedback system will be there on the
transmitter side and will make the decision
according to the threshold values mentioned
in the program and there will be a relay
section in which according to the parameter
sensed the equivalent device will be turned
ON or OFF. For example, if the temperature
in the boiler rises above the certain threshold
set than the Arduino will take the take control
by controlling the relay and turns OFF the
electric burner and so on for each parameter
to be measured.
MANUAL MODE: In this mode the relay
circuit is disconnected from the transmitter
side and each data that is sensed by the
sensor is given to the Zig-Bee via Arduino
and all the data is transmitted to the receiver
side and the graph is plotted on the PC. And
from the readings from the graph the manual
operator sitting and operating the PC will
have to take actions and according to the
parameter sensed the operator has to turn ON
or OFF the device connected.
II.
Fig. 5 Makerplot graph
B. Arduino IDE serial monitor results:
SOFTWARE IMPLEMENTATION
A. Flowchart
Fig. 6 Serial monitor results
Fig. 4 Flowchart
Fig. 7 LCD Display showing real-time temperature
reading and Gas detected
ISSN: 2231-5381
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International Journal of Engineering Trends and Technology (IJETT) – Volume 34 Number 2- April 2016
ACKNOWLEDGEMENT
Fig. 8 LCD Display showing real-time temperature
reading and Gas not detected
IV.
CONCLUSION
This paper depicts the complete wireless interface of
the SCADA system in the autonomous mode whose
controlling action is automatically taken by the
controller using actuation mechanism. Zigbee wireless
communication technology that has been used for
wireless transmission and reception has great
advantages of low cost, low power dissipation, highcapacity networks, reliable data transmission, etc.
The importance of monitoring and controlling
Industrial parameters lies in building efficient SCADA
based wireless technology. Its applications range from
providing security through intrusion detection to
measuring important parameters such as Temperature,
Light Intensity etc.
V.
We are highly obliged to take this
opportunity to express our sincere and deepest
gratitude to all those who have contributed their
valuable time and assistance to the successful
completion of our project.
To begin with, it has to be our respected
parents. They have been with us all through my thick
and thins, given us all sort of support or moral
support.
No doubt we agree that my basic foundation
is laid by our parents but it will be a great mistake if
we ignore the fact that although foundation sets the
base but a building cannot stand erect without pillars
and our pillars are our guides Asst. Prof.VipulGohil
sir and Asst. Prof.Kashyap Joshi. We would also like
to thank our respected H.O.D Dr.VaishaliKulkarni and
project co-ordinatorfor their timely support.
Lastly, we express our sincere gratitude
towards our electronics and telecommunication
department who directly or indirectly contributed to
the completion of our project in practical electronics.
Their contribution towards our project came in all
forms, for assisting us in our technical shortcomings.
REFERENCES
[1]
FUTURE SCOPE
The above idea can be implemented using GSM
Modem which could also make the connection
more secure. We could send SMS and E-mails to
any part of the world.
We could also make a mobile application on
which the data can be monitored anytime and
anywhere.
We could connect the data with the help of
internet so as to transmit the data anywhere in
part of the world.
We could increase the number of sensors for
acquiring more data/ parameters and making it
fully autonomous by changing the controller and
using PID Logic so as to get the precise values
and constant output.
[2]
[3]
[4]
[5]
[6]
[7]
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