What are the commonly used gas sensors and particle sensors?

Background:

With the continuous promotion and development of smart cities, the term smart perception is no longer unfamiliar to everyone. Smart perception includes many aspects, such as: environment perception, situational perception, device perception, identity perception, etc. To achieve perception, the basis is the need to apply various types of sensors. The gas sensors and particle sensors related to environmental perception are categories that have developed rapidly in recent years. So what are the commonly used ones?

A brief introduction to the gas sensor:

Common sensors for atmospheric monitoring, including carbon monoxide (CO) sensors, carbon dioxide (CO2) sensors, nitrogen monoxide (NO) sensors, nitrogen dioxide (NO2) sensors, sulfur dioxide (SO2) sensors, volatile organic compounds (VOCs), ozone (O3 ) sensors, etc. Commonly used sensors for indoor monitoring, including general air quality sensors, formaldehyde (HCHO) sensors, total volatile organic compounds (TVOC), etc. Sensors commonly used in public toilets and farms, including hydrogen sulfide (H2S) sensors, ammonia (NH3) sensors, etc.

Particulate matter sensor:

The commonly used particulate matter sensors include PM10 sensor and PM2.5 sensor. The commonly used sensor principles include laser principle and infrared principle. It is worth noting that for different use levels, application environments, accuracy requirements, range requirements, etc. A sensor will also have multiple models or multiple brands. Therefore, when purchasing suitable gas sensors and particulate matter sensors, you still need to consult a professional sensor supplier or the original factory. Including the selection of technical support, after-sales service, supporting circuit boards or accessories, etc., will affect the final performance of the sensor after it is integrated into the instrument or equipment.

The laser particle (dust) sensor module independently developed by Jingxun Changtong adopts the principle of laser scattering and can monitor the concentration of PM1.0/2.5/10. The particle sensor module adopts a built-in shielding cover, and the internal anti-interference is more accurate and the measurement is accurate.