Heat Monitor Report Final

VISVESVARAYA TECHNOLOGICAL UNIVERSITY
“Jnana Sangama”, Belagavi-590 018
Project Report
On
“INDUSTRIAL HEAT MONITORING AND CONTROL SYSTEM USING IOT”
submitted in partial fulfillment of the requirements for the award of the degree of
BACHELOR OF ENGINEERING
IN
ELECTRICAL & ELECTRONICS ENGINEERING
Submitted by
AKHILLA SRK 1MV20EE004
MOHAMMED NAWAZ 1MV21EE417
POOJA K R 1MV21EE423
SUCHITHRA J 1MV21EE443
Under the Guidance of
Mrs. Rekha Radhakrishnan

Assistant Professor,
Dept. of Electrical & Electronics Eng.,
Sir M.VIT, Bengaluru.
Department of Electrical & Electronics Engineering

Sir M. VISVESVARAYA INSTITUTE OF TECHNOLOGY
(Affiliated to VTU, Belagavi, Approved by AICTE, New Delhi, Accredited by NAAC and NBA)
Off International Airport Road, Krishnadevaraya Nagar, Bengaluru – 562157
2023 – 2024
CERTIFICATE
Certified that the Project Work entitled “INDUSTRIAL HEAT MONITORING AND
CONTROL SYSTEM USING IOT” carried out by AKHILLA SRK (1MV20EE004),

MOHAMMED NAWAZ (1MV21EE417), POOJA K R (1MV21EE423), SUCHITHRA J
(1MV21EE443), bonafide students of Sir M VISVESVARAYA INSTITUTE OF
TECHNOLOGY, Bengaluru in partial fulfillment for the requirements for the award of the degree
of Bachelor of Engineering in Electrical & Electronics Engineering of the Visvesvaraya
Technological University, Belagavi during the year 2023-2024. It is certified that all
corrections/suggestions indicated for Internal Assessment have been incorporated in the report
deposited in the department library. The Project work report has been approved as it satisfies the
academic requirements in respect of project work prescribed for the above-mentioned degree.
Signature of Guide Signature of HOD Signature of Principal

Mrs. Rekha Radhakrishnan Dr. Suresh H L Prof. Rakesh S G
EXTERNAL VIVA
Name of Examiners Signature with Date
1.
2.
DECLARATION
We, hereby declare that the Project Work entitled “INDUSTRIAL HEAT MONITORING AND
CONTROL SYSTEM USING IOT” carried out by me and submitted in partial fulfilment for the
award of Bachelor of Engineering in Electrical & Electronics Engineering of the Visvesvaraya
Technological University, Belagavi during the year 2023-2024.The matter embodied in this Project
report has not been submitted to any other university or institute for the award of any other degree or
diploma.
Place: Bengaluru
Date: 25/ 05 / 2024
AKHILLA SRK MOHAMMED NAWAZ

USN: 1MV20EE004 USN: 1MV21EE417
POOJA K R SUCHITHRA J
USN: 1MV21EE423 USN: 1MV21EE443
i
ACKNOWLEDEGMENT
Our most sincere gratitude to “Sir M VISVESVARAYA INSTITUTE OF TECHNOLOGY,

Bengaluru” for giving me an opportunity to pursue Bachelor of Engineering in Electrical &
Electronics Engineering and thus, helping me to shape the career.
We would like wish to express my gratitude to our project guide Mrs. Rekha Radhakrishnan,
Assistant Professor, Department of Electrical and Electronics Engineering, Sir M.VIT for her
constant support, encouragement and provided valuable insights leading to the completion of the
project and assisted us in compiling the project.
We would like to express our gratitude to Prof. Rakesh S G, Principal of Sir M.VIT, for providing
us with a congenial environment to work in.
We would also wish to express our gratitude to Dr. Suresh H L, Professor & Head, Department of
Electrical and Electronics Engineering, Sir M.VIT for his constant support and encouragement.
We are highly indebted to Dr. R Sivapriyan, Associate. Professor and Project coordinator, Dept. of
EEE, Sir M.VIT for his guidance and constant supervision as well as for providing necessary
information regarding the project.
Finally, we thank and acknowledge the immense help extended by our parents, staff of Electrical and
Electronics department and friends, without whom this report would not have reached completion.
AKHILLA SRK USN: 1MV20EE004

MOHAMMED NAWAZ USN: 1MV21EE417
POOJA K R USN: 1MV21EE423
SUCHITHRA J USN: 1MV21EE443
ii
ABSTRACT
Temperature, humidity and gas monitors have wide industrial applications in many areas such as
automobile industry, food processing and industrial environment for the safety monitoring. However,
most of these monitors had limited functionality. This paper proposes a new feature that can detect,
notify, record and control the temperature in order to have stable, controllable atmospheric
conditions. This research uses temperature, humidity sensor DHT-11 to detect level of humidity and
temperature change. The data from DHT-11 sensor will be analyzed graphically in thingspeak
platform. The value of temperature, humidity and gas changes can be seen through LCD display.
This data is also sent to the thingspeak server, which enables the concerned authority to remotely
access and review the readings. A buzzer is used to alert the inhouse authorities about any potential
dangers. This design uses the temperature measurement method to design the industry safety warning
system based on the temperature, humidity and gas sensor collaborative monitoring.
iii
DECLARATION i
ACKNOWLEDGEMENT ii
ABSTRACT iii
CONTENTS v
LIST OF FIGURES vi
LIST OF TABLES vii
CHAPTER 1 INTRODUCTION 1
1.1 Literature Survey 2
1.2 Summary of Literature Survey 4
1.3 Objectives 5
CHAPTER 2 METHOD OF IMPLEMENTATION 6

2.1 Block diagram of project 6
2.2 Hardware and software requirements 8
2.3 ESP32 8
2.4 DHT11sensor 11
2.5 LCD 12
2.6 Buzzer 13
2.7 Cooling fan 14
2.8 MQ3 gas sensor 15
2.9 GSM Module SIM800A 16
2.10 Relay 17
2.11 Arduino IDE

CHAPTER 3 WORKING 22
3.1 circuit diagram 23
3.2 Flow Chart of proposed project 25
iv
CHAPTER 4 RESULTS AND DISCUSSION 27
4.1 The Results of The Proposed Project 27
4.2 Advantages 30
4.3 Disadvantages 30
4.4 Applications 30
CONCLUSION 32
FUTURE SCOPE 33
REFERENCES 34
APPENDIX 36
v
LIST OF FIGURES
Figure No Figure Name Page No

Fig 2.1 Block Diagram 6
Fig 2.2 Esp32 8
Fig 2.3 Pin configuration 9
Fig 2.4 DHT11 sensor 11
Fig 2.5 LCD display 12
Fig 2.6 Buzzer 14
Fig 2.7 Cooling fan 14
Fig 2.8 MQ3 Gas sensor 15
Fig 2.9 GSM Module SIM800A 16
Fig 2.10 Relay 18
Fig 2.11 Arduino IDE default window 19
Fig 2.12 Arduino IDE Tools window 20
Fig 2.13 Arduino IDE serial monitor window 21
Fig 3.1 circuit diagram 23
Fig 3.2 Flow Chart 25
Fig 4.1 System under normal condition parameters 27
Fig 4.2 System under alert condition 27
Fig 4.3 Output 28
Fig 4.4 temperature, humidity and gas parameters in things peak 29
vi
LIST OF TABLES
Table No Table Name Page No
Table 3.1 ESP32 Each pin connections Details 24
Table 4.1 Operations with respective to ESP32 29
vii
INDUSTRIAL HEAT MONITORING AND CONTROL SYSTEM USING IOT 2024
CHAPTER 1
INTRODUCTION
Industrial heat monitoring and controlling play a crucial role in various industries, providing
the necessary heat and steam for manufacturing processes, power generation and other
applications. However, the efficient and safe operation of these Industries requires continuous
monitoring of their temperature and heat distribution.
A heat monitoring and control system for industry is a comprehensive solution designed to
monitor and control the heat parameters within the industry, ensuring optimal performance,
energy efficiency and safety. This system employs advanced technologies and sensors to
measure and analyse the temperature, humidity, gas and other vital parameters in real-time.
The primary objective of a heat monitoring and control system is to prevent overheating,
minimize the risk of equipment failure, and enhance the overall efficiency. By closely
monitoring the heat, humidity and gas distribution and temperature profiles, operators can
identify potential issues, prevent critical failures and optimize the combustion process to
maximize energy utilization.
Humidity and temperature have been a problem for many engineers in industries especially to
grasp because of temperature. Some electronic components should be tested and kept under
certain temperature to make sure the testing result will be accurate and ensure its lifespan. In
reality life, the coldness and the heat can be felt by humans but the ideal temperature for the
certain electronic components cannot be determined as it was made with different materials.
The second problem is because of humidity. The moisture of the air may speed up the de-casting
effect of the pins of electronic components. Every industry of the mechanized world is affected
by humidity and temperature both in terms of material and money. this research able to
implement the IoT technology in monitoring and controlling the humidity and temperature for
industrial fixed room storage. authorized person may access the system and monitor. Thus, it
enables the users to notice about the level of humidity and temperature from anywhere anytime
they want. Hence, the data can also be recorded in a database.
DEPT OF EEE, Sir M.VIT Page |1

1.1 LITERATURE SURVEY

1. Joshuva Arockia Dhanraj, et. al [1] have Proposed on the thermal power plant which is
been spread to a large area can be monitored and controlled by a single personal computer
(PC) in which the transmission of the data is been taken with the help of CAN. The pair of
CAN wires are being used in the data transfer in which the replacement of the defected is
been simple. This study is mainly used in the thermal plants where the high-frequency wave
is being emitted. the process takes place in the industry can be controlled from a single
monitoring room which reduces the manpower.
2. Yuan Ji1, et. al [2] has designed a kind of traditional heating and power equipment, the
industrial boiler is more and more applied in industrial production and life. However, due
to the uneven heating of the industry, the process of using the boiler would result in boiler
leakage accidents and cause burns to workers. Given the above situation, the intelligent
control system of the industrial boiler is studied in this paper to achieve safe and stable
operation of the boiler. This design uses the distributed thermocouple temperature
measurement method to design the boiler safety warning system based on the thermocouple
sensor collaborative monitoring.
3. Ms. S Mythili et. al [3] have explored on important parameters such as temperature,
humidity, gas level and boiler water level are monitored in Thinkspeak by using Internet of
Things. If the internet connection is given to the monitoring system through wifi module
then the monitored result visualized in Thinkspeak at any place with internet connection.
Allowing ThingSpeak users to analyze and visualize uploaded data using a graphical
system. The parameters of the boiler unit can be monitored by using Effective
communication medium.
4. Rishab Garg, et. al [4] have discussed the implementation of IoT in the manufacturing area
for monitoring the industries and obtained the crucial data that can be used to monitor the
industry which will increase the safety of the workers. It will also help in increasing the
productivity and efficiency of the industry. the important concepts related to the Industrial
IoT its challenges and the opportunities it brings in towards the future. It is a growing field

and it will keep on growing when the people who care for this industrial sector of the society
works towards it.
5. Balamurugan.R1, et. al [5], have explored on Modern checking is an assortment of
information and status of ecological parameters. Assortment of these parameters is basic in
ventures to keep away from any sort of serious harm to industry or the individuals working
(Hasan Salman, etal,2017). To stay away from these dangers remote checking framework
alongside IOT is utilized which is simple in gathering the information, conveying and
putting away it for future reference. By utilizing remote observing we can screen and
maintain a strategic distance from these mishaps with no human intercession.
6. A. Şekertekin a, et. al [6], have designed on LST variations in industrial regions were
evaluated and SHIs were extracted using LST images. ERDEMIR is in the centre of the city
and thus it should be investigated by some different disciplines together whether it has
negative effects on people and environment or not. The expansion in the industrial
enterprises’ facilities causes rise in the surface temperature. Therefore, it should be
considered to increase woodland and vegetative areas while constructing concrete
structures. The decision makers should control the construction works and consider using
materials that do not absorb sun radiation so much in the industrial enterprises.
7. F.M. Aiysha Farzana, et. al [7], have discussed A growing variety design and ambient
sensor units is leading to new and promising ways to monitor boiler in their natural
surroundings. These sensors also result in several challenges to application developers,
however, as the increasing heterogeneity of data formats, protocols, and communication
channels hinders them in a swift application development The event-driven middleware
architecture is designed to aggregate and provides information from both sensor networks
and ambient sensor networks to subscribed applications via broadcast channels.
8. Karim, A. et. al [7], have presented a strong consensus on the benefits of IoT in enhancing
food storage management through real-time monitoring and data analysis. The work of
Karim et al. (2018) builds on these foundations, contributing to the growing body of
evidence supporting the adoption of IoT technologies in food storage. Future research
should continue to the existing challenges and explore new frontiers in IoT applications to
further optimize food storage and supply chain management.

9. Rahim, R et. al [7], have presented on a growing body of research supporting the use of
IoT in educational settings to enhance learning and provide practical experience with
emerging technologies. The work contributes to field by presenting a prototype for humidity
and temperature monitoring, demonstrating the feasibility and educational value of IoT
applications. Future research should continue to innovative IoT solutions for education and
the associated challenges to maximize their impact on teaching and learning.
10. Nasution, T.H et. al [7], has implemented the critical role of IoT in monitoring
environmental conditions in server rooms, ensuring the optimal performance and longevity
of IT infrastructure. The work contributes to this field by presenting a practical
implementation using Lattepanda and ThingSpeak, demonstrating the feasibility and
effectiveness of such solutions. Future research should continue to the existing challenges
and explore innovative approaches to enhance the capabilities of IoT-based environmental
monitoring systems.
1.2 SUMMARY OF LITERATURE SURVEY

All the above referred paper provides the different concept of Industrial Heat Monitoring and
Control System Using IOT is explored in multiple sources. The reviewed literature
encompasses several research papers focusing on the development of IoT applications in
industries, showcasing a broad spectrum of technologies and functionalities. The first paper
by Joshuva Arockia Dhanraj et al. introduces the use of CAN bus technology for monitoring
and controlling thermal power plants, highlighting its ability to reduce manpower and simplify
data transmission in high-frequency environments. The second paper by Yuan Ji et al.
introduces the intelligent control systems for industrial boilers to prevent accidents from
uneven heating, employing distributed thermocouple temperature measurement for enhanced
safety and stability. The third paper by Ms. S Mythili et al. introduces the utilization of IoT to
monitor critical boiler parameters such as temperature, humidity, gas levels, and water levels,
enabling remote data visualization and analysis via ThingSpeak. Rishab Garg et al. discussed
IoT implementation in manufacturing to improve worker safety, productivity, and efficiency,
addressing the challenges and future opportunities of Industrial IoT (IIoT). Balamurugan R et
al. (2018) highlighted the importance of remote monitoring to prevent industrial accidents,

using IoT for proactive risk management and data storage without human intervention. A.
Şekertekin et al. evaluated land surface temperature variations in industrial areas, emphasizing
urban planning to incorporate green spaces and materials that mitigate environmental impacts.
F.M. Aiysha Farzana et al. developed an event-driven middleware architecture for boiler
monitoring, tackling challenges related to heterogeneous data formats and communication
protocols. Karim A. et al. underscored the benefits of IoT in real-time food storage
management and data analysis, calling for further research to optimize food supply chains.
Rahim R. et al. explored IoT applications in education for monitoring humidity and
temperature, demonstrating their educational value and feasibility. Nasution T.H. et al.
emphasized IoT's critical role in monitoring environmental conditions in server rooms using
Lattepanda and ThingSpeak, proving the practicality and effectiveness of such solutions for
maintaining IT infrastructure. Collectively, these studies illustrate the wide-ranging
advantages of IoT, including real-time data collection, remote monitoring, and enhanced
analytics, while also highlighting ongoing challenges such as data security and system
reliability. The overall trend emphasizes the advancements in efficiency, safety and
sustainability across multiple sectors.
1.3 OBJECTIVES
The main objective of Industrial Heat Monitoring and Control System Using IOT are:
➢ To develop a prototype model of industrial heat monitoring and control system using IOT.
➢ To control and monitor industrial heat remotely using ThingSpeak.
➢ To detect and prevent potentially hazardous situations using DHT11 and MQ3 gas sensor
such as overheating, pressure spikes or leaks.

CHAPTER 2
METHODOLOGY
2.1 Block Diagram
Fig 2.1 Block Diagram of Industrial Heat Monitoring and control System
Fig 2.1 shows the block diagram of proposed project, it consists of following blocks ESP32,
DHT11 sensor, MQ3 GAS sensor, Cooling fan, LCD, Buzzer, GSM Module SIM800A, Relay
and Power Supply Board.

ESP32 is the main controller for the entire system. It processes the commands sent by the
Android App through the Bluetooth module. It also communicates with the other sensors and
motor drivers to execute the tasks.
Temperature and Humidity Sensor This sensor is used to measure the temperature and
humidity in the industry. The ESP32 can read the sensor values and process them as required.
LCD is used to display temperature, humidity and gas parameters.
Buzzer is used to give alarm signal to operator.
MQ3 gas sensor is used detects Alcohol, Benzine, CH4, Hexane, LPG, and CO.
GSM Module SIM800A is used to send alert message and location to authorized person of industry.
Cooling fan is used to blow cold air and drive hot air out of the environment.
Relay are used to control circuits using low-power signals, or to control multiple circuits with a single
signal.
Power supply is used to provide the necessary power to all the sensors, relay, buzzer, colling
fan and ESP32.

2.2 Hardware and software Requirements

The proposed project consists of different types of parts with different specifications. The
components used in construction of Industrial Heat Monitoring and control System Using IOT
is listed and explained its working below.
1. ESP32
2. DHT11 sensor
3. MQ3 GAS sensor
4. Cooling fan
5. LCD
6. Buzzer
7. GSM Module SIM800A
8. Relay
9. Power Supply Board
Software Requirements
Arduino IDE
2.3 ESP32:-
Fig 2.2 ESP32

Above fig 2.2 shows esp32, the esp32 is the name of a micro-controller designed by Espressif
Systems. The ESP32 itself is a self-contained Wi-Fi networking solution offering as a bridge

from existing micro controller to Wi-Fi and is also capable of running self-contained
applications. This module comes with a built in USB connector and a rich assortment of pin-
outs. With a micro-USB cable, you can connect esp32 to your laptop and flash it without any
trouble, just like Arduino. It is also immediately breadboard friendly. Also Pin configuration is
shown in Fig 2.3.
Fig 2.3 Pin configuration

Specification:
1. Processor: The ESP32 module is powered by a 32-bit Tensilica Xtensa LX6
microcontroller with dual-core processors running at up to 240MHz.
2. Current consumption: chip consumes about 240mA of power.
3. Wi-Fi Connectivity: The ESP32 module supports 802.11 b/g/n Wi-Fi standards, allowing
it to connect to wireless networks and access the internet.
4. Bluetooth Connectivity: supports Bluetooth v4.2 and Bluetooth Low Energy (BLE)
connectivity.
5. Memory: The ESP32 module typically comes with a range of memory options, including
RAM and Flash memory. It can have up to 520 KB of SRAM and up to 4 MB of Flash
memory for storing code and data.

6. GPIO Pins: The ESP32 module provides a significant number of GPIO (General Purpose
Input/Output) pins, ranging from 26 to 34, depending on the specific module variant. These
pins can be used to interface with various external devices and sensors.
7. Analog-to-Digital Converters (ADC): Includes multiple 12-bit SAR (Successive
Approximation Register) ADCs. The number of ADC channels can vary based on the
specific module variant but typically ranges from 12 to 18.
8. Serial Communication Interfaces: It supports various serial communication interfaces,
including UART, SPI and I2C.
Here is a brief overview of the pin configuration:
1. Power Pins:
• 3V3: 3.3V power supply.
• GND: Ground.
2. Digital and Analog Pins:
• GPIO (General Purpose Input Output) Pins: ESP32 has 34 GPIO pins that can be
used for various digital and analog operations. Some of these pins have specific
functionalities like ADC (Analog to Digital Converter), DAC (Digital to Analog
Converter), PWM (Pulse Width Modulation), I2C, SPI, UART, and more.
• ADC Pins: ESP32 has 18 ADC channels, labeled as ADC1 and ADC2.
• DAC Pins: ESP32 has 2 DAC channels (GPIO25 and GPIO26).
3. Communication Pins:
• UART Pins: ESP32 has 3 UART interfaces (UART0, UART1, UART2).
• SPI Pins: ESP32 has 4 SPI interfaces (VSPI, HSPI, FSPI, LSPI).
• I2C Pins: ESP32 has 2 I2C interfaces (SDA, SCL).
4. Special Function Pins:
• EN (Enable): This pin is used to enable the ESP32 chip. Pulling it low puts the
chip into a low-power state.
• BOOT (GPIO0): Used for bootstrapping and entering firmware upload mode.
• Touch Pins: ESP32 has 10 capacitive touch pins (T0 to T9).
DEPT OF EEE, Sir M.VIT P a g e | 10

• RTC GPIO Pins: These are pins that can be used when the ESP32 is in deep sleep
mode.
2.4 DHT11 SENSOR

DHTII is a low-cost digital sensor for sensing temperature and humidity. Humidity measurement
determines the amount of moisture present in the gas that can be a mixture of water vapour,
nitrogen, argon or pure gas etc. Humidity sensors are of two types based on their measurement
units.
For measuring temperature this sensor uses a Negative Temperature coefficient thermistor, which
causes a decrease in its resistance value with increase in temperature. To get larger resistance value
even for the smallest change in temperature, this sensor is usually made up of semiconductor
ceramics or polymers. The temperature range of DHT11 is from 0 to 50 degree Celsius with a 2-
degree accuracy. Humidity range of this sensor is from 20 to 80% with 5% accuracy. Fig 2.4 shows
the DHT11 sensor.
This sensor is used in various applications such as measuring humidity and temperature values in
heating, ventilation and air conditioning system. The humidity sensor is used as a preventive
measure in homes where people are affected by humidity Offices, cars, museums, greenhouses
and industries use this sensor for measuring humidity values and as a safety measure.
Fig 2.4 DHT11 sensor

Pin Configuration:
The DHT11 sensor typically has four pins:
1) VCC (Supply Voltage): This pin is connected to the power supply (usually 3.3V to 5V) to
power the sensor.
2) Data: This pin is used for bidirectional communication between the sensor and the
microcontroller. It sends out digital data containing temperature and humidity information.
3) GND (Ground): This pin is connected to the ground of the circuit to complete the electrical
circuit.
2.5 LCD (LIQUID CRYSTAL DISPLAY)

LCD modules are very commonly used in most embedded projects, the reason being its cheap
price, availability and programmer friendly. Most of us would have come across these displays in
our day-to-day life, either at PCO’s or calculators. The appearance and the pinouts have already
been visualized above now let us get a bit technical. 16x2 LCD is named so because, it has 16
Columns and 2 Rows. There are a lot of combinations available like, 8×1, 8×2, 10×2, 16×1, etc.,
but the most used one is the 16x2 LCD. So, it will have (16×2-32) 32 characters in total and each
character will be made of 5×8 Pixel Dots. A Single character with all its Pixels is shown in the
below fig 2.5.
Fig 2.5 LCD display

Now, we know that each character has (5x8-40) 40 Pixels and for 32 Characters we will have
(32x40) 1280 Pixels. The 2.5 shows pin configuration of a typical 16x2 LCD module, which are
as follows:
1. VSS (Ground): Connected to the ground (GND) of the circuit.
2. VDD (Power Supply): Connected to the positive power supply (usually 5V).
3. VO (Contrast Control): Adjusts the contrast of the display. Connected to a potentiometer
for adjusting the contrast.
4. RS (Register Select): Determines whether data sent to the display is interpreted as a
command (RS=0) or as character data (RS=1).
5. RW (Read/Write): Determines whether data is being written to the display (RW=0) or
read from it (RW=1). Often connected to ground for write-only operation.
6. E (Enable): Enables data read/write operations when transitioning from high to low. Acts
as a clock signal for the data transfer.
7. D0-D7 (Data Pins): Data pins used for transferring 8-bit data to the display when in 8-bit
mode. In 4-bit mode, only D4-D7 pins are used.
8. A (Anode): Connected to the positive terminal of the LED backlight.
9. K (Cathode): Connected to the negative terminal of the LED backlight.
2.6 BUZZER
An audio signaling device like a beeper or buzzer may be electromechanical or piezoelectric or
mechanical type. The main function of this is to convert the signal from audio to sound. Generally,
it is powered through DC voltage and used in timers, alarm devices, printers, alarms, computers,
etc. Based on the various designs, it can generate different sounds like alarm, music, bell & siren.
The buzzer is shown fig 2.6 It includes two pins namely positive and negative.
pin configuration of buzzer
• The positive terminal of this is represented with the ‘+’ symbol or a longer terminal. This
terminal is powered through 6Volts.
• Negative terminal is represented with the ‘-‘symbol or short terminal and it is connected
to the GND terminal.

Positive
(+)
Negative
(-)
Fig 2.6 Buzzer
2.7 COOLING FAN

A 12V DC cooling fan is a type of fan commonly used to dissipate heat in electronic devices,
computers, automotive systems, and various other applications. These fans are designed to operate
on a direct current (DC) power source of 12 volts.
A 12V DC cooling fan serves a crucial role in maintaining optimal temperatures within electronic
devices and systems. By effectively dissipating heat, it helps prevent overheating, which can lead
to performance degradation, component damage, or even system failure. These fans are compact,
efficient, and reliable, making them suitable for a wide range of cooling applications. Cooling fan
figure is shown in fig 2.7.
Fig 2.7 Cooling Fan

Pin configuration of cooling fan

• Red Wire: Power (VCC)
• Black Wire: Ground (GND)
2.8 MQ3 GAS SENSOR
The MQ-3 gas sensor is a popular semiconductor sensor designed for detecting alcohol vapor
concentrations in the air. The MQ-3 gas sensor is a low-cost semiconductor sensor. It is
commonly used in alcohol detection systems, breathalyzers, and safety devices. The MQ-3 gas
sensor is based on the principle of a tin dioxide (SnO2) semiconductor sensing element. It
operates on the principle of changes in electrical conductivity when exposed to alcohol vapors.
The sensor consists of a sensing element, heater coil, and circuitry for signal processing. When
the sensor is heated, its resistance decreases in the presence of alcohol vapor, leading to a change
in output voltage or current. MQ3 gas sensor is shown in fig 2.8. it detects Alcohol, Benzine,
CH4, Hexane, LPG and CO.
Fig 2.8 MQ3 gas sensor

pin configuration of MQ3 Gas sensor
1. H1 and H2 (Heater Pins):
• H1: Heater pin 1, connected to VCC.
• H2: Heater pin 2, connected to GND. These pins power the internal heater that
stabilizes the sensor.
2. D0 and A0 (Analog Output Pins):
• A0: Analog output 1.

• D0: Analog output 2. These provide the same analog output; you can use either of
them.
3. GND: Ground pin, connected to the ground of the power supply.
4. VCC: Supply voltage, typically 5V.
2.9 GSM MODULE SIM800A
The SIM800A is a cellular module that supports 2G (GSM/GPRS) networks and has a
SIM800A GSM chip and RS232 interface. It can be connected to a computer or laptop using
a USB to Serial connector or to a microcontroller using an RS232 to TTL converter. The
SIM800A supports 900 MHz and 1800 MHz frequency bands, and has lower power
consumption than the SIM900A, making it more suitable for battery-powered applications. It
can perform the following functions: Telephone voice, SMS (SMS, MMS) GPRS data
transmission function The Network LED indicates the various status of the GSM module, such
as power on, network registration, and GPRS connectivity. When the modem is powered up,
the LED will blink every second. After the modem registers in the network, the LED will blink
in step of 3 seconds. GSM Module SIM800A is shown in fig 2.9.
Fig 2.9 GSM Module SIM800A

Pin Configuration of GSM Module
The typical GSM module often includes the following pins:

1. VCC (or VDD): This pin is used to supply power to the GSM module. It typically requires
voltage of around 3.4V to 4.2V, although specific requirements may vary depending on the
module.
2. GND: This pin is connected to the ground (0V) of the system and serves as the reference
point for the module's operation.
3. TXD (Transmit Data): This pin is used to transmit data from the microcontroller or host
device to the GSM module.
4. RXD (Receive Data): This pin is used to receive data from the GSM module to the
microcontroller or host device.
5. RESET (or RST): This optional pin is used to reset the GSM module. It may be connected
to a microcontroller's reset pin or controlled through software.
6. SIM Card Interface: This interface typically includes pins for connecting the SIM card,
including SIM Data (SIM_D), SIM Clock (SIM_CLK), SIM Reset (SIM_RST), and SIM
Card Detect (SIM_DET) pins.
7. Antenna Connector: This connector is used to connect an external antenna to the GSM
module for transmitting and receiving signals.
8. Status LEDs: Some GSM modules may include status LEDs to indicate power, network
status and communication activity.
2.10 Relay
Fig 2.10 shows relay. A relay is an electrically operated switch that opens and closes circuits
by receiving electrical signals from external sources. Relays have input terminals for control
signals and operating contact terminals. The switch can have multiple contacts in different
forms, such as make, break, or a combination of both. These relays are often used in
microcontroller-based projects, Arduino circuits and other electronic applications where a
low-voltage control signal is needed to operate higher-voltage devices.

Fig 2.10 Relay
Pin Configuration of Relay Module:

The pin configuration of a typical single-channel relay module generally includes the following:
1. VCC (Power Input): This pin is connected to the positive terminal of the power supply,
typically in the range of 5V to 12V DC, to power the relay coil and associated circuitry.
2. GND (Ground): This pin is connected to the ground (0V) reference of the power supply
and the microcontroller or control system.
3. IN or SIGNAL (Control Input): This pin is used to provide the control signal that
activates or deactivates the relay. When a logical HIGH or appropriate signal level is
applied to this pin, the relay switches ON, and when the signal is LOW or not present, the
relay switches OFF.
4. COM (Common): This pin is connected to the common terminal of the relay's output
contacts. It is typically used as one of the connections for the load circuit.
5. NO (Normally Open): This pin is connected to the normally open terminal of the relay's
output contacts. When the relay is not energized (OFF state), this pin is disconnected from
the COM pin. When the relay is energized (ON state), this pin is connected to the COM
pin, completing the circuit for the load.
6. NC (Normally Closed): This pin is connected to the normally closed terminal of the relay's
output contacts. When the relay is not energized (OFF state), this pin is connected to the
COM pin, completing the circuit for the load. When the relay is energized (ON state), this
pin is disconnected from the COM pin.

SOFTWARE REQUIREMENTS
2.11 ARDUINO IDE DEFAULT WINDOW
The Fig 2.11 represents the default window of Arduino IDE offers a streamlined interface for
Arduino microcontroller programming, featuring a menu bar providing access to various functions,
a toolbar offering shortcuts for common tasks, and a spacious editor area for writing and editing
sketches. Below, the message area provides real-time feedback during compilation and uploading
processes, aiding in debugging, while the status bar offers key information such as cursor position,
selected board, and port. With its user-friendly layout and intuitive design, the Arduino IDE
simplifies the development process, empowering users to quickly prototype and deploy projects
for embedded systems, robotics, IoT applications and more.
Fig 2.11 Arduino IDE Default Window

2.12 ARDUINO IDE TOOLS WINDOW

In Fig 2.12 represents the Arduino IDE tools window which navigating to the "Tools" menu allows
users to select the appropriate board and communication port for their project. For instance, when
working with an ESP32, users would choose this board from the "Board" submenu.
Fig 2.12 Arduino IDE Tools Window

Additionally, they would specify the communication port, typically denoted as "COM8" for
Windows systems, through which the ESP32 is connected to the computer. This configuration
ensures that the IDE compiles and uploads sketches to the correct board and establishes
communication for tasks such as serial monitoring. By accurately specifying the board and port,
users can seamlessly develop and deploy projects tailored to their ESP32 microcontroller,
facilitating efficient prototyping and development across various applications.

2.13 ARDUINO IDE SERIAL MONITOR WINDOW
Fig 2.13 Arduino IDE Serial Monitor Window
The Fig 2.13 represents Serial Monitor window in the Arduino IDE serves as a vital tool for
debugging and data visualization in Arduino projects. It enables real-time communication between
the Arduino board and the computer via the serial port, allowing users to monitor and analyse data
exchanged between the two devices. With features such as configurable baud rates, ASCII and
binary display options, and interactive input capabilities, the Serial Monitor provides invaluable
insights into sensor readings, program outputs, and system behavior. Whether printing debug
messages, logging sensor data, or interacting with the Arduino in real-time, the Serial Monitor
empowers developers to troubleshoot, fine-tune, and optimize their Arduino projects with ease and
precision, enhancing the efficiency and reliability of their embedded systems.

CHAPTER 3
WORKING PRINCIPLE
The fig 3.1 shows the circuit diagram of the Industrial Heat Monitoring and Control System
Using IOT project revolves around the systematic monitoring and control vital parameters:
Temperature, Humidity and Gas. This process begins with the ESP32 loaded the code as mentioned
in the Appendix using the Arduino IDE software. working of the system is very simple and easy,
first we need to switch ON the power supply to it then check for the connectivity with the Wi-Fi
and also check the connectivity of the mobile phone also. Open the thingspeak website and login
in the phone or laptop and check the temperature, humidity and gas reading in graph check online
storage visualization is done in thingspeak.
Industrial Heat monitoring and control system is composed of various components including
a microcontroller, temperature sensor, LCD display, relay, gas sensor, buzzer and SIM800A
GSM module. This system operates by utilizing the temperature sensor to measure the heat
levels, gas sensor to detect gas leakage and then transmitting this data to the microcontroller.
Microcontroller processes the received information and presents the parameters on LCD display
for the operator's convenience.
In case the temperature exceeds or gas leakage is detected above the predefined threshold
value, the display shows an alert, the cooling fan is turned on and the buzzer emits a distinct
sound to immediately notify the operator and alert message with location is sent to operator or
authority. These alerts enable the operator to promptly respond by implementing appropriate
measures such as shutting down or undertaking any necessary actions to ensure the safe operation
of the industries.

3.1 CIRCUIT DIAGRAM
Fig 3.1 circuit diagram

Table 3.1 ESP32 Each pin connections Details
SL NO PIN NO CONNECTIONS
1 GPI/O25 connect to LCD Display (D7 pin)
5 GPI/O12 connect to LCD Display (EN pin)
6 GPI/O13 connect to LCD Display (RS pin)
7 VCC connect to Supply (+ve)
8 GND connect to Supply (-ve)
9 GPI/O5 connect to DHT11 sensor data pin
10 GPI/O4 connect to Relay 1 control pin
11 GPI/O2 connect to Relay 2 control pin
12 GPI/O33 connect to Buzzer control pin
13 GPI/O39 connect to Gas sensor A0 pin
14 RXD connect to GSM Modul (TXD pin)
15 TXD connect to GSM Modul (RXD pin)

3.2 FLOW CHART OF PROPOSED PROJECT
Fig 3.2 Flow Chart

Fig 3.2 shows the flow chart of proposed project which provide a graphical representation of a
algorithm, or workflow.

1. Start: The process begins here. It’s the initial point of execution.
2. Turn On the Power Supply: This step involves activating the power supply for the
system. It ensures that the necessary electrical components are ready for operation.
3. Boot The Controller: The controller (presumably a microcontroller or similar device) is
initialized. This step includes loading firmware, setting up communication interfaces, and
preparing the controller for its tasks.
4. Check The Temperature: check the condition If the temperature is greater than 37
degrees.
5. Send SMS Alerts and Control the Output: This action likely involves notifying relevant
authority (via SMS) about the high temperature and taking corrective measures
If the temperature is not greater than 37 degrees:
6. Check The Gas Level: If the gas level exceeds 2300.
7. Send SMS Alerts and Control the Output: Similar to the temperature case, this action
alerts and manages the situation related to gas levels.
If the gas level is within acceptable limits:
8. Monitor Temperature, Humidity and Gas Values: The system continues to monitor
Temperature, humidity and gas levels.
9. Display Information in Lcd: The information (Temperature, humidity and gas values) is
displayed on an LCD screen.
Finally, the process reaches the STOP point.

CHAPTER 4
RESULT AND DISCUSSION
4.1 THE RESULTS OF THE PROPOSED PROJECT
Fig 4.1 shows system under normal condition LCD parameters and fig 4.2 shows system under
alert condition. Project results are the changes or the effects that expected to take place after
implementing the project. The results are usually positive improvements to the lives of the
beneficiaries. After completing the hardware setup and checking the functionality of the
components the output of the system was analyzed. The system was checked to fulfil the
desired objectives. The obtained output was analyzed, and certain modifications were made to
obtain the expected output. The results of the proposed system are as follows:
Fig 4.1 System Under Normal Condition Parameters
Fig 4.2 System Under Alert Condition

Fig 4.3 shows output of hardware project and fig 4.4 shows the visualizations of temperature,
humidity and gas parameters in thingspeak.
Fig 4.3 Output

Fig 4.4 temperature, humidity and gas parameters in thingspeak
Table 4.1 operations with respective to ESP32

INPUT OUTPUT REMARKS
GPI/O5 GPI/O39 VCC GND GPI/O33 GPI/O4 GPI/O2 OPERATION
0 0 0 0 0 1 0 Normal operation
1 0 1 1 1 0 1 Alert condition Buzzer, cooling
fan Will operate and message will
be sent to authority
0 1 1 1 1 1 0 Alert condition only Buzzer will
Operate and message will be sent
to authority
1 1 1 1 1 0 1 Alert condition Buzzer, cooling
fan Will Operate and message will
be sent to authority

Table 4.1 represents the operation with respective to ESP32 as shown in table and explaination of
each operation described below:
Inputs : These represent the status of different sensors installed in the project
GPIO5: Input from humidity and temperature sensor.
GPIO39: Input from MQ3 gas sensor which provides the gas in that environment.
VCC: supply 5v
Gnd: ground
Outputs : These represent the actions or responses based on the sensor inputs.
GPIO33: Output to Buzzer to give alarm signal
GPIO4: Output to heating element
GPIO2: Output to cooling fan
Remarks: Describes the behavior based on the combination of sensor inputs and their outputs.
1. Under normal condition: all the output of sensors are set to 0, indicates that system is under
normal condition.
2. Alert condition: If the temperature exceeds 37 degrees Celsius, GPIO5 receives a signal,
and the ESP32 sends an analog signal to GPIO2 to activate the relay and to GPIO33 to
activate the buzzer. If the gas level exceeds 2300, GPIO39 receives a signal, and the ESP32
sends an analog signal to GPIO33 to activate the buzzer, alerting the authorities. If either
sensor exceeds its threshold value, the system indicates that it is in an alert stage.
Otherwise, the system parameters are displayed on the LCD screen.
4.2 ADVANTAGES
• Real-time Monitoring: IoT-enabled systems provide real-time monitoring of industrial heat
parameters, allowing for immediate intervention in case of deviations or abnormalities.
• Remote Accessibility: Operators can access and control the system remotely, enabling
them to monitor heat levels and adjust settings from anywhere, enhancing flexibility and
efficiency.

• Data Analytics: IoT platforms gather vast amounts of data on heat patterns, allowing for
in-depth analysis and predictive maintenance, thus reducing downtime and optimizing
performance.
• Improved Safety: Early detection of overheating or equipment malfunctions can prevent
accidents and ensure a safer working environment for employees.
4.3 DISADVANTAGES
• Cybersecurity Risks: IoT systems are vulnerable to cyber-attacks, potentially
compromising sensitive data or disrupting operations if not adequately secured.
• Initial Investment: Implementing IoT-based monitoring systems requires a significant
initial investment in hardware, software, and infrastructure.
4.4 APPLICATIONS
• Manufacturing: Industrial heat monitoring and control systems find extensive applications
in manufacturing processes such as metalworking, plastics processing, and chemical
production to ensure precise temperature control and product quality.
• Energy Management: IoT-based heat monitoring systems are used in power plants and
energy-intensive industries to optimize energy usage, reduce waste, and improve overall
efficiency.
• Food Processing: In the food and beverage industry, precise temperature control is crucial
for ensuring food safety and quality during processing, storage, and transportation.
• HVAC Systems: Industrial HVAC systems utilize IoT technology for monitoring and
controlling heating, ventilation, and air conditioning to maintain optimal indoor
environmental conditions.

CONCLUSION
The implementation of a heat monitoring system for industries is important in ensuring safe
and efficient operations. By constantly monitoring temperature, humidity and gas levels and
providing crucial information to operators, this system enables them to make informed decisions
promptly. Furthermore, the heat monitoring and control system plays a vital role in preventing
equipment failures, optimizing energy utilization, and enhancing overall performance. Its
comprehensive capabilities not only improve safety and efficiency but also lead to significant
cost savings and compliance with regulatory standards. Thus, the incorporation of a reliable heat
monitoring and control system is highly recommended for industries such as chemical industry,
steam applications and hot boilers to achieve operational excellence and maintain a secure
working environment.

FUTURE SCOPE
The future of industrial heat monitoring and control system is promising, with a range of potential
applications across various industries. As technology advances and more sensors are integrated
into these systems, we can expect to see even more valuable applications emerge. The future of
industrial heat monitoring and control system using IOT will include advanced technologies such
as AI/ML, and data analytics to enhance monitoring capabilities, improve efficiency, and enable
predictive maintenance and in future individual machine or room can be monitored. The
integration with wide energy management systems and renewable energy sources will contribute
to more sustainable and optimized operations in industrial settings. With the increasing
significance damage and environmental sustainability, the demand for accurate and real-time
data is on the rise.

REFERENCE
1. Balamurugan.R, Muruganantham.T and Nagarajan.N.R3, “Industrial Parameters

Monitoring Using Embedded System”, Bioscience Biotechnology Research
Comminications. Special Issue Vol 13 No (2) 2020. Pp-34-37
DOI:10.35940/ijitee.I8935.078919
2. Joshuva Arockia Dhanraj “Boiler Temperature and Pressure Monitoring System for
Thermal Power Plant through LabVIEW” IOP Conference Series Materials Science and
Engineering · December 2020 012079. Pp 55-29 DOI 10.1088/1757-899X/988/1/012079
3. Yuan Ji1*, Heng Chen2 and Xianwei Shi3, " Industrial Boiler Intelligent Monitoring
System Based on LabVIEW ", Journal of Physics: Conference Series 2450 (2023) 012075.
Pp 19-26 DOI:10.1088/1742-6596/2450/1/012075
4. A. Şekertekin a, *, Ş. H. Kutoglu a , S. Kaya b , A. M. Marangoz “Monitoring the surface
heat island (shi) effects of industrial enterprises”, The International Archives of the
Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLI-B6,
2016. DOI:10.5194/isprsarchives-XLI-B6-289-2016
5. F.M. Aiysha Farzana, Hameedhul Arshadh. A, Dinesh. I, Mrs.M. Navaneetha Velammal
“Implementation of Industrial heat Monitoring System with GSM”, Indo-Iranian Journal
of Scientific Research (IIJSR) (Quarterly International Journal) Volume 3, Issue 1, Pages
61-68, January-March 2019. DOI:16.155557-C6-287-2019
6. Sharmad Pasha “Thingspeak Based Sensing and Monitoring System for IoT with Matlab
Analysis” International Journal of New Technology and Research (IJNTR) ISSN: 2454-
4116, Volume-2, Issue-6, June 2016 Pages 19-23 DOI:10.1109/IDAP.2018.8620793.
7. Rishab Garg, Mrinal Anand, Abhishek Yadav, S. Babeetha Muruganantham, “Industrial
monitoring system”, International Journal of Advance Research, Ideas and Innovations in
Technology ISSN: 2454-132X Impact factor: 4.295 (Volume 5, Issue 2). Pages 55-59
DOI:10.35940/ijitee.I8935.078919.
8. D. Meisner, C. M. Sadler, L. A. Barroso, W. D. Weber and T. F. Wenisch, "Power
management of online data-intensive services," Computer Architecture (ISCA), 2011 38th

Annual International Symposium on, SanJose, CA, 2011, pp.309-320.

DOI:10.15662/IJAREEIE.2018.0702011.
9. Ms. S Mythili ,Mr. G. Gokulkumar, “Monitoring of Boiler Parameters using Internet of
Things”, National Conference on Emerging Trends in Electrical, Electronics and Computer
Engineering (ETEEC-2018) April 2018 pp 33-39 e-ISSN: 2455-5703. DOI
DOI:5514698957.256.
10. D. Meisner, C. M. Sadler, L. A. Barroso, W. D. Weber and T. F. Wenisch, "Power
management of online data-intensive services," Computer Architecture (ISCA), 2011 38th
Annual International Symposium on, San Jose, CA, 2011, pp. 319-330.
doi.org/10.3390/sym12091391.

Appendix
SOURCE CODE FOR OPERATION OF PROJECT
#include <LiquidCrystal.h>
int rs=13,en=12,d4=14,d5=27,d6=26,d7=25;
LiquidCrystal lcd(rs,en,d4,d5,d6,d7);
#include<DHT.h>
#define dhtpin 5
#define dhttype DHT11
DHT dht (dhtpin, dhttype);
#include "ThingSpeak.h"
#include <WiFi.h>
int fan=2;
int light=4;
int buzzer=33;
char ssid[] = "PROJECT"; // your network SSID (name)
char pass[] = "123456789"; // your network password
int keyIndex = 0; // your network key Index number (needed only for WEP)
WiFiClient client;
unsigned long myChannelNumber =2459323;
const char * myWriteAPIKey = "FG59FUKYOFGZBN7D";
String myStatus = "";
float t, p, val, volt;
int gas=39;
int gasval;
String SMS;
int get_sms(String message){
Serial2.print("ATD +918904323825;\r");
delay(1000);
Serial2.print("AT+CMGF=1\r"); // AT command to set SIM900 to SMS mode
delay(100);

Serial2.print("AT+CNMI=2,2,0,0,0\r"); // Set module to send SMS data to serial out upon

receipt
delay(100);
Serial2.println("AT+CMGF=1"); // Replace x with mobile number
delay(1000);
Serial2.println("AT+CMGS= \"+918904323825\"\r"); // Replace * with mobile number sim
number - 8861273413
delay(1000);
Serial2.println(message);// The SMS text you want to send
delay(100);
Serial2.println((char)26);// ASCII code of CTRL+Z
}
void setup()
{
lcd.begin(16,2);
dht.begin();
ThingSpeak.begin(client);
Serial.begin(9600);
Serial2.begin(9600);
pinMode(fan,OUTPUT);
pinMode(light,OUTPUT);
pinMode(buzzer,OUTPUT);
pinMode(gas,INPUT);
}
void loop()
{
if(WiFi.status() != WL_CONNECTED)
{
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);

while(WiFi.status() != WL_CONNECTED)
{
WiFi.begin(ssid, pass);
Serial.print(".");
delay(5000);
}
Serial.println("\nConnected.");
}
t=dht.readTemperature();
p=dht.readHumidity();
Serial.print("Temperature: ");
Serial.print(t);
Serial.print("\xC2\xB0");
Serial.print("C");
Serial.print("\t\t");
Serial.print("Humidity: ");
Serial.print(p);
Serial.println("%");
int gasval=analogRead(gas);
Serial.println(gasval);
Serial.print("GAS: ");
Serial.print(gasval);
Serial.println();
delay(500);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("TEMP: ");
lcd.setCursor(6,0);
lcd.print(t);
lcd.setCursor(0,1);

lcd.print("HUMIDITY:");
lcd.setCursor(10,1);
lcd.print(p);
delay(2000);
lcd.clear();
lcd.setCursor(0,1);
lcd.print("GAS: ");
lcd.print(gasval);
delay(2000);
if(gasval>2300)
{
Serial.println("GAS DETECTED");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("GAS DETECTED");
digitalWrite(buzzer,HIGH);
delay(1000);
// delay(500);
SMS = "Alert : Gas detected, Please take care!! location:
https://maps.app.goo.gl/U6Foib2Re9L53DBSA?g_st=aw";
get_sms(SMS);
delay(500);
digitalWrite(buzzer,LOW);
}
if(t>37)
{
digitalWrite(buzzer,HIGH);
delay(1000);
digitalWrite(buzzer,LOW);
delay(500);

digitalWrite(fan,1);
digitalWrite(light,0);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("fan on");
lcd.setCursor(8,0);
lcd.print("T:");
lcd.print(t);
lcd.setCursor(0,1);
lcd.print("Alert");
SMS = "Alert : Temperature is high, Please take care!! location:
https://maps.app.goo.gl/U6Foib2Re9L53DBSA?g_st=aw";
get_sms(SMS);
}
if(t<37)
{
digitalWrite(fan,0);
digitalWrite(light,1);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("fan off");
lcd.setCursor(8,0);
lcd.print("T:");
lcd.print(t);
lcd.setCursor(0,1);
lcd.print("Normal Condition");
}
ThingSpeak.setField(1, t);

ThingSpeak.setField(2, p);
ThingSpeak.setField(3, gasval);
//// ThingSpeak.setField(4, solar);
// write to the ThingSpeak channel
int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
if(x == 200)
{
Serial.println("Channel update successful.");
Serial.println();
}
else
{
Serial.println("Problem updating channel. HTTP error code " + String(x));
Serial.println();
}
// change the values
ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
delay(15000); // Wait 15 seconds to update the channel again
}

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VISVESVARAYA TECHNOLOGICAL UNIVERSITY

“Jnana Sangama”, Belagavi-590 018

Under the Guidance of

Mrs. Rekha Radhakrishnan

Department of Electrical & Electronics Engineering

Department of Electrical & Electronics Engineering

CONTROL SYSTEM USING IOT” carried out by AKHILLA SRK (1MV20EE004),

Signature of Guide Signature of HOD Signature of Principal

Name of Examiners Signature with Date

Department of Electrical & Electronics Engineering

AKHILLA SRK MOHAMMED NAWAZ

Our most sincere gratitude to “Sir M VISVESVARAYA INSTITUTE OF TECHNOLOGY,

AKHILLA SRK USN: 1MV20EE004

LIST OF TABLES vii

1.1 Literature Survey 2

1.2 Summary of Literature Survey 4

CHAPTER 2 METHOD OF IMPLEMENTATION 6

2.7 Cooling fan 14

2.8 MQ3 gas sensor 15

2.9 GSM Module SIM800A 16

2.11 Arduino IDE

3.1 circuit diagram 23

3.2 Flow Chart of proposed project 25

4.1 The Results of The Proposed Project 27

Figure No Figure Name Page No

Fig 2.2 Esp32 8

Fig 2.3 Pin configuration 9

Fig 2.4 DHT11 sensor 11

Fig 2.5 LCD display 12

Fig 2.6 Buzzer 14

Fig 2.7 Cooling fan 14

Fig 2.8 MQ3 Gas sensor 15

Fig 2.9 GSM Module SIM800A 16

Fig 2.10 Relay 18

Fig 2.11 Arduino IDE default window 19

Fig 2.12 Arduino IDE Tools window 20

Fig 2.13 Arduino IDE serial monitor window 21

Fig 3.1 circuit diagram 23

Fig 3.2 Flow Chart 25

Fig 4.1 System under normal condition parameters 27

Fig 4.2 System under alert condition 27

Fig 4.3 Output 28

Fig 4.4 temperature, humidity and gas parameters in things peak 29

Table No Table Name Page No

Table 3.1 ESP32 Each pin connections Details 24

Table 4.1 Operations with respective to ESP32 29

DEPT OF EEE, Sir M.VIT Page |1

1.1 LITERATURE SURVEY

DEPT OF EEE, Sir M.VIT Page |2

DEPT OF EEE, Sir M.VIT Page |3

1.2 SUMMARY OF LITERATURE SURVEY

DEPT OF EEE, Sir M.VIT Page |4

DEPT OF EEE, Sir M.VIT Page |5

DEPT OF EEE, Sir M.VIT Page |6

LCD is used to display temperature, humidity and gas parameters.

Buzzer is used to give alarm signal to operator.

DEPT OF EEE, Sir M.VIT Page |7

2.2 Hardware and software Requirements

Fig 2.2 ESP32