The atmosphere exists above the Earth and is important for weather. Weather is one physical phenomenon that occurs in the atmosphere. Air pollution is a phenomenon in which pollutants such as dust, harmful gases, etc. are present in large quantities in a particular area and negatively affects people, property, etc.
In addition to the physical properties of pollutants, air pollution is closely related to the atmospheric environment, such as pressure, temperature, humidity, wind (direction and speed), and ultraviolet rays.
Chapter 5: Atmospheric Environmental Sensors
C501 BME280 Atmospheric Pressure Arduino Sensor
Bosch's BME280 can measure air pressure, temperature, and humidity. It is suitable for all kinds of weather/environmental detection. The GY-BME280 sensor module for using BME280 sensors provides an I2C interface. Gravity, Sparkfun, waveshare, adafruit, and other sensor modules are also available, and performance is the same.
Why does fine dust fluctuate when the weather gets warm?
High pressure: When high pressure occurs, fine dust from high up in the atmosphere descends, pollutes. and stagnates where we live. If the atmosphere is stagnant, air pollutants (fine dust, sulfur dioxide, nitrogen dioxide, ozone, etc.) emitted from various air pollutants such as power plants, vehicles, and factories will stay in the atmosphere longer. Eventually, the concentration of the contaminants intensifies, which adversely affects the human body through breathing, skin, etc.
Low pressure: Low pressure disperses air pollutants to create clean air but causes meteorological diseases. Meteorological disease refers to changes in temperature, humidity, and air pressure that cause or worsen diseases that you normally suffer from. The greater the temperature and humidity change, the worse it becomes. It usually causes arthritis, depression, headaches, toothache, and hives.
C502 GUVA-S12SD Ultraviolet (UV) Arduino Sensor
Genicom's GUVA-S12SD sensor detects UV radiation from sunlight and can be used for UV index monitoring, DIY projects, UV-A lamp monitoring, and plant growth environment monitoring.
Ultraviolet (UV) Ultraviolet rays increase when there is a lot of fine dust and clouds
Sunlight can be fatal to the human body as it is designated as a group 1 carcinogen. Immediate exposure to strong ultraviolet rays can cause photoconjunctivitis in the eyes and skin, subcutaneous cataracts in the cornea or lens, erythema reaction, sunburn reaction, and pigment reaction. Nearly half of the world's 35 million blindness cases are due to cataracts, of which 20% are estimated to be cataracts caused by UV-B. Furthermore, exposure to hot sunlight (UV-B) for more than 30 minutes during the summer will cause erythema to appear on the skin, which expands blood vessels, increases blood flow, and increases the permeability of the blood vessels
Ultraviolet radiation produces secondary air pollutants.
Primary pollutant: refers to substances that remain intact when discharged into the atmosphere (e.g., dust, sulfur oxides, nitric acid cargo, hydrocarbons, etc.).
Secondary pollutant: refers to newly-created substances that causes photochemical or oxidative reactions between primary pollutants and ultraviolet rays in the atmosphere. (e.g., ozone, nitric acid, and peroxyacetyl nitrate (PAN)).
C503 MD0550 Airflow Arduino Sensor
Modern Device's Wind Sensor Rev.CMD0550 sensor is an inexpensive wind speed sensor with analog outputs designed for use in electronic projects. It is a wind speed sensor, but it can also be used indoors as a human respiratory sensor or as a heating, ventilation, air conditioning (HVAC) monitoring sensor.
The Airflow Pollution Problem: Indoor Air Quality Can Not Be Neglected
The house we live in also needs to breathe. Just as a person is healthy when blood circulation is normal, indoor air flow must be circulated well to create a pleasant environment for people to live in. Airflow affects the movement of indoor air pollutants and temperature. The wind promotes heat dissipation from the human body. Every 1 m/s of wind speed feels the same as a temperature drop of 1℃.
Depending on the airflow, air pollutants generated indoors may be stagnant or circulated, or may be introduced from the outside.
C504 QS-FS01 Wind Speed Arduino Sensor
The QS-FS01 Three-cup Anemometer Wind Speed Sensor can measure wind speed.
The Three-cup Anemometer Wind Speed Sensor (QS-FS01) is a common weather observation device used to measure wind speed. Th three-cup wind speed meter designed to be installed outdoors to easily measure wind speed.
S-FS01 Wind Speed Arduino Sensor: How does wind affect fine dust?
When the wind blows, pollutants in the air are scattered. Strong winds lower the concentration of air pollutants, and weak winds do not scatter air pollutants, increasing the concentration.
Additionally, in windless, congested atmosphere, even a small amount of pollutants from sources of air pollutants (e.g., cars, factories, etc.) can stagnate in the air, adversely affecting the human body.
Purchasing a book
[Arduino Sensors for Everyone] The book is available for purchase on Google Book and Apple Books.
In this book, you will learn how to use the PMS7003, GP2Y1010AU0F, PPD42NS, SDS011 Fine Dust Sensor, DHT22 temperature/humidity sensor, MH-Z19B carbon dioxide sensor, ZE08-CH2O formaldehyde sensor, CCS811 total volatile organic compound (TVOC) sensor , GDK101 radiation (gamma ray) sensor, MQ-131 ozone (O3) sensor, MQ-7 carbon monoxide sensor, MICS-4514 nitrogen dioxide sensor, MICS-6814 ammonia sensor, DGS-SO2 sulfur dioxide (SO2) sensor, BME280 atmospheric pressure sensor, GUVA-S12SD ultraviolet (UV) sensor, MD0550 airflow sensor, and QS-FS01 wind speed sensor.
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