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Air quality sensors make air quality indicators easier to understand

Update: 2019-10-10 17:30 Source: LUFTMY Reading: ↻ News

With the improvement of living standards, the air quality of ordinary people has also been improved correspondingly, and various large shopping malls and supermarkets, business buildings, theatres, gymnasiums, libraries, entertainment venues and other public places throughout the city, these places are densely staffed and highly mobile. For citizens, people pay more attention to the quality of urban air and family air every day, but they do not pay enough attention to the air quality of public places. At present, more and more families use air purifiers with built-in PM2.5 sensors to purify indoor air.

Air purifier with built-in PM2.5 sensor
Air purifier with built-in PM2.5 sensor

1. Indoor air pollutants in public places exceed the standard

In some public places, such as large shopping malls and supermarkets, during the peak period of passenger flow, the excessive number of shoppers causes serious excessive carbon dioxide, poor ventilation conditions and poor quality of decorative materials for building decoration, which seriously pollutes the indoor environment.

2. Serious pollution of central air-conditioning system in public places

There are many public places where the centralized air-conditioning ventilation system is not cleaned for a long time, which results in a large number of pollutants in the air-conditioning pipeline. Once it runs for a long time, the indoor air quality drops sharply, and it is easy to cause the spread of respiratory infectious diseases.

3. Inadequate Fresh Air Input in Central Air Conditioning System

According to the state regulations, the minimum fresh air volume in public places should reach 30 cubic meters per person per hour, in order to solve the air quality problems caused by the airtight space.

However, because the energy consumption of fresh air treatment accounts for more than 20% of the energy consumption of air conditioning, and some operators in order to save operating costs, shut down the fresh air volume very small, or even completely, resulting in poor air circulation, fresh air can not be exchanged indoors, harmful gases can not be discharged, resulting in indoor air pollution.

Air environmental quality
Air environmental quality

The air quality monitoring system in public places consists of three parts

1. Sensors

Sensors include PM2.5 sensors, carbon dioxide, VOC gas sensors, temperature, humidity, air velocity and so on. These independent air quality sensors will measure very accurate data to the data acquisition equipment.

2. Field Data Acquisition Equipment

Using industrial-level low-power and high-performance embedded processor, users can set the upper and lower alarm limits of sensors by themselves, and transmit data to remote control center by GPRS/3G/ADSL. Through this system, the data of carbon dioxide, temperature and humidity, VOC wind speed on site can be viewed by software, and remote monitoring and management can be realized.

3. On-site LED display

Through on-site LED display, it is convenient for people to know the air quality of public places on-site, and it is helpful to improve the service quality of public places such as shopping malls, hospitals, stations, and ensure people's health and safety.

4. Central Data Monitoring Center

All information will be centralized through the network transmission to the monitoring center, to achieve the collection of air quality in public places, data storage, real-time alarm, historical data analysis, statistics, processing and other functions, to ensure good air quality in places.

HPD05 infrared dust sensor
HPD05 infrared dust sensor

Infrared gas sensor manufacturer LUFTMY infrared PM2.5 sensor HPD05 uses the principle of optical scattering to measure the dust concentration in the detection range through the conversion of optical path and circuit. Infrared air quality sensor gas sensor module HPD05 has the characteristics of small size, high precision, low power consumption, short response time, stable operation under high dust concentration, etc. Dust sensor air quality detector can be used in air purifier, air conditioning with purification function, PM2.5 detector, etc.

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