MAS Holding Ltd Boiler Section Sensor Prototype Report

This report details the design and implementation of an Arduino Uno-based prototype for measuring temperature and humidity, specifically targeting the boiler section of MAS Holding Ltd. The project utilizes a DHT11 sensor to collect environmental data, with the Arduino platform serving as the compiling module. The report covers the methodology, including software and hardware configurations, and the use of an LCD digital display for output. The study addresses a real-world problem by monitoring the conditions of a boiler section that uses superheated steam. The report also discusses the sensor's performance, including operating voltage, current, and temperature range, and highlights the limitations of the DHT11 sensor in an industrial setting. The report concludes with a successful implementation, demonstrated through a YouTube video, and recommends the use of more accurate sensors for industrial applications. The report also provides a detailed description of the circuit design, potentiometer usage, LED indicator, and the importance of following data sheets for correct configuration. The project faced a challenge with an indication of humidity and a blinking temperature, with the compiling module showing a negative temperature reading after a time lap.

Executive Summary
In this exercise, the design of a prototype is conceptualized and its design simulated using the
Arduino Uno open source electronics platform. A review of literature including word applications
was conducted to ensure that the prototype was simulated and implemented on the prototype. The
exercise seeks to utilize a sensor to measure the humidity and temperature of the environment of
the boiler section of MAS Holding Ltd. The report therefore entails a discussion about the
methodology of the implementations and the configurations carried out in the study and use these
configurations to measure and evaluate its performance.
Since the prototype designed in this exercise is aimed to solve a real world problem, it calls for the
need to show the humidity and temperature levels of the boiler section. This is because the section
comprises of a fluid generator that uses super heated steam imposing and effect on the humidity
and temperature levels of the area surrounding. The prototype designed will thus use a sensor to
find solutions on how to regulate the environment of the room. The project will conclude by
uploading a 2-minute YouTube Video about the project and its findings.
Background
The study used a DHT11sensor to measure the humidity and temperature in a prototype made to
model the conceptualized circuit diagram and its configurations. The report also details the software
and hardware configurations, limitations, and recommendations of the project in a general context.
Scope
The objective of the experiment was to measure the humidity and temperature levels of the boiler
section using the DHT11 sensor, whose inputs and outputs were modelled on the Arduino Uno
platform. Further, the Arduino coding was also utilized to compile the module and display the results
of the project in the digital display made up of LCDs.
Summary of the Design
The project designed largely comprised of a sensor made up of 3 pins used for measuring the
humidity and temperature, the Arduino Uno platform as the compiling module, the potentiometer
which serves to vary the output, and the Arduino programme. It also has an LED indicator and the
output component which an LCD digital display. The Circuit Traffic software was used to draw and
execute the design before the prototype was built.
Unresolved Items
 There was an indication of humidity that was shown and a blinked temperature that
was unknown. The compiling module noted the correct results of compile of -999.00
degrees after a time lap.
Performance Test of the Sensor
 The DHT11 sensor was run at 3.5-5.5 V operating voltage which falls within the
voltage restriction of the Arduino program of 5V.The sensor was thus able to provide
an output of serial data which is compatible to the programming of the Arduino

platform. The sensor runs at an operating current of 0.3mA and has a standby
operating current of 60uAs.
 The sensor can measure temperatures ranging between 0 and 50 . It is however℃ ℃
hindered by the global room temperature variations which range from 5 to 40℃ ℃
approximately. In addition, the industrial environment may have higher values of
temperature than the room temperature global room temperature range as a result
of the thermodynamic activities within the industry setting. A different type of sensor
that is sensitive for industrial temperature ranges may be required as was mentioned
in the background.
 The humidity levels noted were an indication of the relative humidity in the
surrounding which is a ratio of the density of the water vapour to that of the
saturated water vapour density. The humidity range of the sensor is expected to range
between 20% and 90% with a small deviation of ±2.
 The apparatus used to complete the project were connected as follows:
o The potentiometer, the sensor, and LED indicator were first fixated on a
breadboard with its correct conuration orders. A soldering iron was then used
to solder the jumper wires to the digital display accordingly in alignment with
the correct pins. The computer was finally used to powered the Arduino Uno
board using a USB to feed serial data to the computer.
The steps carried out using the solder and the jumpers were carried out without an error since an
occurrence of failure would cause the circuit not to portray results or for damages to occur to the
connected equipment. Since the potentiometer was used to fluctuate the output voltage and direct
it to the sensor, the indicator and the LCD display. The frequency of the indicator of the LED light
simultaneously functions with the changes of the potentiometer. It’s obligatory that the Arduino
board and data sheet of the sensor are followed when the data is being observed as it ensures that
the configuration ports are evidently selected in the given data sheets together with the equipment
selected during procurement.
.
Conclusion
The project was therefore implemented and designed successfully using the DHT11temperature and
the sensor used to manage the humidity. The Arduno code was used to compile the prototype
successfully. The video demonstrated that the sensor performed as was expected. The LED indicator
was only able to show the voltage that was varied through the potentiometer varied the source of
voltage. The project recommends that using different accurate sensors that can measure high-low
temperature such as DS18820 and the TMP100. These sensors are also not compatible with the
industrial function where the temperatures to be measured tend to be higher than 40℃.