Multi-parameter air quality monitoring system

The invention provides a multi-parameter air quality monitoring system. The system is characterized in that a to-be-detected air sample extracted by a sampling pump passes through a constant temperature device, gas concentrations of an SO2 sensor, an NO2 sensor, an O3 sensor and a CO sensor are respectively measured, and the gas concentrations are converted into corresponding digital signals through a conditioning circuit and then are transmitted to a system control module; a to-be-measured air sample collected by the sampling head passes through the heat tracing pipeline, the particulate matter sensor measures the particulate matter concentration, and the measurement result is directly transmitted to the system control module through the data bus; the system control module is used for carrying out concentration prediction on the received digital signal by adopting an established particulate matter concentration prediction model and an established SO2, NO2, CO and O3 gas concentration prediction model to obta