*1 COMPONENT

For the beginning of this sem, i choose to complete all my require component and tools. The example of tools is breadboard, jumper and so on. For component, there is 2 component that i had change. Which brand of the sensor and wifi shield.

#AOSONG to DHT11
For temperature and humidity sensor,  i decided to change the brand of the sensor, which is from AOSONG to DHT11. This is because, DHT11 is more familiar compare to AOSONG, so it is more easier for me to get the information for this DHT11, compare to AOSONG. Beside that, the price of DHT 11 is affordable to me.

AOSONG AM2320

DHT 11

          

CHANGE TO

#Arduino WiFi Shield to WiFi Module
Then, for next component is, i had make a decision to change Arduino WiFi Shield to WiFi Module. The main reason i change this component because of the price. The price of the Arduino WiFi Shield is extremely expensive compare to WiFi module. Since the title of my fyp is Development of LOW-COST Air Quality Monitoring, i had consider for this price side. Moreover, the function of WiFi Module and Arduino WiFi module is slightly same.

Arduino WiFi Shield

WiFi Module ESP8266

CHANGE 

TO

#AOSONG DHT11

Product Overview 
DHT11 digital temperature and humidity sensor is a composite Sensor contains a calibrated digital signal output of the temperature and humidity. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability. The sensor includes a resistive sense of wet components and an NTC temperature measurement devices, and connected with a high-performance 8-bit microcontroller.

Applications 
HVAC, dehumidifier, testing and inspection equipment, consumer goods, automotive, automatic control, data loggers, weather stations, home appliances, humidity regulator, medical and other humidity measurement and control.

Features 
Low cost, long-term stability, relative humidity and temperature measurement, excellent quality, fast response, strong anti-interference ability, long distance signal transmission, digital signal output, and precise calibration.


#WiFi MODULE ESP8266

Description: The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost effective board with a huge, and ever growing, community.

This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existance interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions, and requires no external RF parts.

There is an almost limitless fountain of information available for the ESP8266, all of which has been provided by amazing community support. In the Documents section below you will find many resources to aid you in using the ESP8266, even instructions on how to transforming this module into an IoT (Internet of Things) solution!

Note: The ESP8266 Module is not capable of 5-3V logic shifting and will require an external Logic Level Converter. Please do not power it directly from your 5V dev board.

Note: This new version of the ESP8266 WiFi Module has increased the flash disk size from 512k to 1MB.

Features:

• 802.11 b/g/n
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLLs, regulators, DCXO and power management units
• +19.5dBm output power in 802.11b mode
• Power down leakage current of <10uA
• 1MB Flash Memory
• Integrated low power 32-bit CPU could be used as application processor
• SDIO 1.1 / 2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4ms guard interval
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)

So, this is the current complete component that i will used for my Air Quality Monitoring System;

PSM 2 :P

Assalamualaikum ...
It is the beginning for 4th year sem1, and it is the sem for completing the Projek Sarjana Muda.
Such like the previous sem, i have to update my weekly progress of my project.

Development of a Low-Cost 

Air Quality Monitoring System

*14 Week : Presentation

This week is a week of PSM1 Presentation. The main thing that have to complete is Slide Show for the presentation. The purpose of this presentation is to let the panel know what is the project or product that will be produce, and either we know and understand how we gonna do it. So it is important to understand all the detail of the project and do a research about the all the component and the method uses. There is my complete slide presentation. The max time of the presentation is 10min, and another 5min for the Q&A session.

#INTRODUCTION
Air pollution :
The cause of air pollution : Open burning, smoke from the factory, smoke from the vehicle.

The aim of air quality monitoring :

#PROBLEM STATEMENT

#OBJECTIVES

#SCOPE

#METHODOLOGY

Flowchart

Block Diagram

#LITERATURE REVIEW

Comparison between product

The Bill of Material

#CONCLUSION

*13 Week : REPORT PSM 1

This week is the last week before the presentation week, so there are so many things that had to be complete by this week. Such as;


#Literature review : The related work
There is some related work to my Air Quality Monitoring. The function of all this work is same, which is to monitor the air, but in different method.

Temporal Air Quality Monitoring Using Surveillance Camera

The aim of this work is to develop a state-of-art reliable technique to use surveillanc camera for monitoring the temporal patterns of PM10 concentrations in the air. In this work an internet protocol (IP) network camera was used as an air quality monitoring sensor. The figure below show the IP network camera and the overview of Temporal Air Quality Monitoring.

Hierarchical Air Quality Monitoring System Design

The aims of this work is to build the prototype system by hierarchically deploying terminal sensor nodes inside the smart buildings of each floor and data collection units and routers in the open spaces between smarrt buildings, and transferring the sensor thing data back to the information processsing center for real-time information. The information processing center is through ZigBee wireless protocol. The detection of air is by CO, SO2, NO, NO2 and PM2.5 sensors. The figure show the  MQ135 sensor 2.5 sensor.

Air Quality Monitoring Using Remote Sensing and GIS Technologies

This is the new method, which is integrates satellite remote sensing and Geographical Information System (GIS). It can be used to continually monitor air quality at micro-scale level.

I had study this three related work, there are the comparison between this three and my project.

Characteristics/Type	Temporal Air Quality Monitoring Using Surveillance Camera	Hierarchical Air Quality Monitoring System Design	Air Quality Monitoring Using Remote Sensing and GIS Technologies	Development of Low Cost Air Quality Monitoring System
Method	Camera	Sensor/Zig Bee Wireless	Sensor/GIS Technologies	WiFi / Sensor/ Arduino
Location	Outdoor	Indoor/ Outdoor	Outdoor	Indoor/ Outdoor
Real Time Data	Yes	Yes	No information	Yes
Portable	No	No information	No	Yes
Accessibility	Anytime, not everywhere	No information	No information	Anytime, everywhere
Cost	Low	High	High	Low

#Literature Review: Competitive Analysis
Competitive Analysis is the product that already in the world market with the same function of my project, to monitor the quality of air.

Air Mentor	DC1100 Air Quality Monitor By Dylos	Airassure PM2.5 Indoor Air Quality Monitor
Air mentor is a product from China. The founder of this product is CoAsia Microelectronics Corp. The purpose of Air Mentor is to monitor the concentrations of VOC, particulate matter, temperature and relative humidity. This product are indoor air monitoring, cannot use it outside of the building.	The founder of DC1100 Air Quality Monitor is Dylos Corporation. DC1100 features technology and engineering that allows monitoring of indoor air quality with an LCD screen that provides small and large particle counts with a dynamic bar graph showing actual count reading. Multiple modes including minute, hour, day and monitor to evaluate your air quality and store up to 30 days of air quality history for review.	This item is produce from TSI, the world pioneer in molecule estimations, the AirAssure PM2.5 Indoor Air Quality (IAQ) Monitor can give continuous, dependably exact estimation of indoor PM2.5 dust focuses, one of the best wellbeing dangers today. The AirAssure Monitor is the savvy on-the-divider instrument to address the issues of all the partners in a building.

I had search and study about this three product, and the table below show the comparison of all this product and my project.

Characteristics/Type	Air Mentor	DC1100 Air Quality Monitor by Dylos	Airassure PM2.5 Indoor Air Quality Monitor	Low Cost Air Quality Monitoring System
Sensor	Particulate matter, Humidity, Temperature	Dust Sensor, Smoke Sensor.	Light Scattering Photometer	Particle, Temperature and Humidity
Communication	Bluetooth	No information	Ethernet	Wi Fi
Location	Indoor	Indoor	Indoor	Indoor & Outdoor
Price	RM700.00	RM799.96	RM3980.00	RM250.00

From the table, show the comparison between the element of Sensor, Communication, Location and price. The biggest different between all this element is the price. The product out there is very high in cost. That why my project will attract people to have it when it in the market. InsyaAllah :D

#Methodology: Flowchart
This is the latest flow of process of my Air Quality Monitoring System.

#Methodology: Block Diagram
The latest block diagram with the component.

The table below show the summarizing of the good characteristics of the component to this project and its functionality.

Component/Element	Characteristics	Functionality
Arduino Uno	ü  Simple ü  Clear programming ü  Affordable	As a microcontroller to process all the input data
Arduino Wi-Fi Shield	ü  Flexible ü  Simple way to cooperate with Uno ü  Affordable	Allow Arduino Uno to connect to wireless network
Particle Sensor	ü  Small ü  Mild ü  Affordable ü  Easy to convert the output reading	Sense the particle in the air
Digital Temperature and Humidity Sensor	ü  Small ü  Mild ü  Affordable ü  Digital output reading	Sense the Temperature and Humidity of the environment
LCD Display	ü  Small ü  Affordable ü  Simple connection to Arduino Uno	Display the reading data

#Methodology: The Estimation Bill of Material
This part will show the estimation cost of the component. The table show the bill of materail of Low-Cost Air Quality Monitoring System.

The Components	Cost
Arduino Uno	RM   40.00
Arduino Wi-Fi Shield	RM   80.00
Particle Sensor	RM   33.00
Temperature and Humidity Sensor	RM   30.00
LCD Display	RM   10.00
Prototype Box and Accessories	RM   30.00
Total Cost	RM 223.00

*12 WEEK : Title of Project / Panel for presentation

#The Official Title of Project
On this week, my SV had decided the official title of my project, which is

DEVELOPMENT OF LOW-COST AIR QUALITY MONITORING SYSTEM.

Besides that, for this week also, i knew the panel for my project presentation PSM1, which is Madam Izadora Binti Mustafa as a Panel 1 and Madam Raeihah Binti Mohd Zain as Panel 2 .

As mention on my official title of project, the most important element of my project is LOW COST. So, i had to make sure that the device or product that i will produce is low cost compare to other product in market.

For this week, i had checking my report for this PSM1. There is a lot of mistake. For example, the arrangement of content. It should be from general info to specific info about my project.


#123dCircuits

Besides that, on this week, my SV had introduced the online software for circuit simulation, which is AUTODESK 123dCIRCUITS. This software allow you to do the circuit simulation. By this application, we can share the our simulation with others user and can look for the other simulation as a references. This is the link of 123dCircuits https://123d.circuits.io/

I had done a simple simulation by this software. I had refer to other work. There is the example of 123dcircuits simulation.

This circuit is one of my try to use this software. i had used potentionmeter to vary the temperature sensor.