Air Quality Monitoring Solution
Air Quality Monitoring Iot environment Monitoring
Environmental monitoring is the process of ascertaining environmental quality (or pollution level) and its variation tendency by measuring the representative values of the elements that have an impact on environmental quality.
Multi-parameter synchronous monitoring
The Internet of Things environmental monitoring system is capable of establishing connections with a wide variety of sensors and instantaneously gathering multiple parameters present in environmental elements including the atmosphere, water, and soil.
Take atmospheric environment monitoring as an example, equipment such as particulate matter (PM2.5, PM10) sensors, sulfur dioxide sensors, nitrogen oxide sensors, and weather stations (which measure temperature, humidity, wind speed, and wind direction) can all be incorporated and interfaced with the IoT platform. This enables a holistic and real-time assessment of the atmospheric conditions, furnishing crucial data for diverse applications such as air quality evaluation, meteorological research, and environmental conservation efforts.
remote data transmission
IoT technology applies to convey data over long distances through wireless communication networks like 4G, 5G, ZigBee, LoRa, etc. This indicates that even when the monitoring location is in isolated and far-flung places, such as the headwaters of a river nestled in the mountains or the periphery of a desolate and unpopulated desert, we can still dispatch the gathered data to the data center expeditiously.
Big Data Analysis
The massive data accumulated by the Internet of Things environmental monitoring system provides the basis for big data analysis. Through the analysis of these data, we can dig out the law of environmental change, the source of pollutants and the path of transmission and other important information.
Automatic operation
The iot environment monitoring system can be automated and reduce manual intervention. The sensor device can automatically collect and transmit data according to preset procedures, and can carry out self-diagnosis.
The application of sensors in Air Quality Monitoring
PM2.5/PM10 Dust Sensor
Function:The dust sensor is a cornerstone of the ambient air quality monitoring system. It is engineered to meticulously evaluate and log the concentration levels of diverse particle dimensions of dust dispersed in the atmosphere.
Atmospheric Temperature, Humidity & Pressure Sensor
Function: The ambient temperature plays a role in governing the spread of atmospheric pollutants and the pace of chemical reactions. For instance, under high-temperature conditions, the rate of photochemical reactions surges, which might give rise to elevated concentrations of pollutants such as ozone.
Air humidity can impact the hygroscopic expansion of particulate matter and the chemical interactions of gaseous pollutants. For example, in a highly humid setting, certain particles will uptake water and enlarge in size, modifying their settling rate and optical attributes.
Wind speed sensor and wind direction sensor
Function:Wind speed and direction determine the direction and speed of air pollutants diffusion. In the vicinity of the pollution source, wind speed and direction sensors can track the path of the pollutant and determine the area it may affect.
The wind speed sensor generally employs a three-cup or propeller configuration. It ascertains the wind speed by gauging the rotational velocity of the wind cup or the propeller. As for wind direction sensors, they utilize structures like wind vanes to identify the wind’s direction.
Such data are of utmost significance for pollution warnings and emergency responses. These sensors play a vital role in environmental monitoring and safety management.
CO2 Transmitter
Function: The measurement of CO₂ concentration both inside and outside a room serves as a valuable indicator for determining the necessity and intensity of ventilation. In an office building, for instance, by installing CO₂ sensors indoors and outdoors respectively, a comparison can be made. When the indoor CO₂ concentration surpasses a specific level in relation to the outdoor concentration (such as exceeding 700ppm), the ventilation equipment can be automatically adjusted.
Rain Sensor
Function: This is highly advantageous for grasping the extent of wet deposition. When there is heavy rain, a larger amount of pollutants is carried and deposited onto the ground by the rain. Consequently, the concentration of pollutants present in the air gets reduced.
noise Sensor
Function:Noise sensors are capable of precisely measuring the intensity of noise in the surroundings. By conducting noise monitoring in diverse areas including residential zones, commercial districts, industrial estates, and the sides of traffic arteries, it becomes possible to assess whether the acoustic environmental quality of these regions complies with the relevant standards.
SO2 Sensor
Function:Sulfur dioxide is mainly derived from the combustion of sulfur-containing fuels (such as coal and petroleum) and industrial production processes. It irritates the airways, causes symptoms such as coughing and wheezing, and forms acid rain in the atmosphere.
H2s sensor
Function:Hydrogen sulfide serves as a vital index for assessing air quality. When it comes to air quality surveillance, besides the prevalent pollutants like particulate matter, sulfur dioxide, and nitrogen oxides, the quantity of hydrogen sulfide present can likewise manifest the level of air pollution and the associated quality attributes. In specific industrial regions or chemical parks, hydrogen sulfide might be one of the predominant air contaminants.
CO Sensor
Function:Carbon monoxide is a gas lacking in color and odor yet possessing toxicity. It primarily derives from automobile exhaust and the incomplete combustion of fossil fuels. Upon entering human blood, it binds to hemoglobin, thereby diminishing the oxygen-carrying capacity of hemoglobin. In severe instances, it can give rise to poisoning and even culminate in death.
Air Quality Monitoring Customer Case
Background:
The site is located in an open field in the center of the village, with relatively high and open terrain, which is conducive to comprehensive monitoring of the surrounding environment.
Air Quality Monitoring equipment:
This device is furnished with PM2.5 and PM10 sensors for the purpose of overseeing the concentration of airborne inhalable particles. Through the utilization of advanced laser scattering methodologies, the quantity and mass concentration of minute particles can be precisely ascertained.
Sensors for sulfur dioxide (SO₂), nitrogen oxide (NOₓ), and carbon monoxide (CO) have been installed to detect industrial exhaust emissions, given the likelihood of the presence of some small processing plants in the surrounding area of the village.
It is further equipped with meteorological parameter sensors, namely those for temperature, humidity, wind speed, and wind direction.
Results:
Background:
Situated atop a commercial building in the very center of the city, the adjacent region encompasses diverse urban functions, including commercial, residential, and major traffic thoroughfares.
Air Quality Monitoring equipment:
PM2.5 and PM10 sensors using advanced laser scattering principles. These sensors can accurately measure the concentration of airborne particles with diameters of 2.5 microns and 10 microns or less
Temperature, humidity and pressure data is one of the important indicators to evaluate urban environmental quality and ecosystem health. The measurement results on the top of the building can represent the atmospheric environment in a certain area.
Results:
By integrating meteorological data with Geographic Information System (GIS) technology, the analysis of air quality monitoring data is carried out to trace the origin of pollutants.
For instance, when the sulfur dioxide concentration in a specific area is under surveillance, through the examination of wind direction, wind speed, and the layout of surrounding industrial enterprises, a preliminary determination can be made regarding whether the pollution source stems from the emissions of nearby factories.
Background:
The park is a comprehensive industrial park that combines industrial production, commercial office functions, warehousing and logistics operations, along with supporting life service facilities.
Air Quality Monitoring equipment:
Air quality monitoring stations are set up in the central area of the park, the boundary of the industrial concentration area, the staff dormitory area and the location near the traffic road
The wind speed sensor is of the three-cup variety, and the wind speed is determined by computing the rotational velocity of the wind cups. The wind direction sensor employs a wind vane to denote the orientation of the wind. These meteorological parameters prove invaluable in dissecting the diffusion circumstances and transport trajectories of pollutants.
Results:
Offer environmental data services to enterprises, enabling them to comprehend the influence of their own production processes on the park environment. This, in turn, encourages enterprises to optimize production procedures, enhance resource utilization efficiency, and curtail pollutant emissions.
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