Environmental protection monitoring first, automation, information is the premise and guarantee of environmental monitoring. With the rapid development of the local economy, different levels of water, gas, noise and other environmental pollution events continue to appear in various regions, which seriously affects people's quality of life and hinders the sustainable development of the local economy. With the promulgation and implementation of various environmental protection policies and regulations formulated by the state, local governments at all levels have increased their investment in environmental monitoring while paying more and more attention to environmental governance in their jurisdictions. Various regions have successively planned and installed atmospheric environmental quality. Quality monitoring ground stations implement urban air quality forecasts.

The air quality monitoring micro-station can fully realize the actual needs of the regional environmental protection monitoring department for environmental monitoring and meet the requirements of urban air quality forecast. Air quality monitoring micro-stations are equipped with on-line environmental monitoring equipment by setting up sub-stations (the number of sub-stations depends on local conditions) at uniform distribution points in cities. The monitoring data is transmitted to the local environmental protection monitoring center in real time. The center can monitor the real-time dynamic data of online monitoring equipment at various points distributed within the jurisdiction through the system real-time monitoring terminal and record it in time. Establish a monitoring system database to predict and forecast the environmental pollution status and development trend in the jurisdiction according to the historical record data and analysis results, so as to provide scientific basis for effective control of the environmental status in the jurisdiction. The system will install a video display screen and establish a display control system in the monitoring center of the Environmental Protection Bureau. The system can meet the needs of the environmental protection bureau's government publicity and the real-time release of environmental monitoring data and information in the jurisdiction.

Ambient air quality automatic monitoring system is an automatic "measurement-control" system with automatic monitoring instruments as the core. Series of ambient air automatic monitoring system is based on dry instrument production technology, the use of constant potential electrolytic sensor principle, combined with the international mature electronic technology and network communication technology research and development of new technology products. The system meets the national requirements for various technical indicators of the urban ambient air automatic monitoring system, has a high degree of localization, has strong practicability and ideal performance-price ratio, can replace similar imported products, and is an ideal instrument for automatic monitoring of urban ambient air. The series of ambient air automatic monitoring system consists of a central station and several sub-stations (the number of sub-stations depends on the local situation), and online environmental monitoring equipment is installed. Therefore, the system software will be composed of two parts: central station software and sub-station software, which are organically combined to coordinate the operation of the entire monitoring system, complete data acquisition, remote communication control and data processing of various monitoring instruments, and form a report.

At present, Shenzhen Science and Technology has launched a four-electrode electrochemical sensor SO2-B4 that can effectively detect SO2 in the atmosphere. The main application directions are urban fixed monitoring stations, atmospheric network equipment, vehicle and UAV equipment, etc. In addition, it can be used in multi-function portable devices to perform uninterrupted measurement, and automatically measure the air quality changes in the path area in real time during continuous movement. The resulting signals are processed and displayed on the instrument in the form of data, or stored in memory, or the received data are transmitted to the central server for processing through GPRS to display dynamic air quality changes. It has the advantages of fast response speed, strong anti-interference ability, high resolution, good linearity and wide working range. More than two years of life.

The main parameters of the SO2-B4:

Range: 100ppm
Overload: 200ppm

Resolution: 5ppb
Response time:< 40s
Size: Φ32.3 × 16.5
Linear range: 0-10ppm
Sensitivity: 275~520 nA/ppm