Flying dust on-line monitoring system

The invention relates to the field of raised dust monitoring, and discloses a raised dust online monitoring system, which comprises a casing, a mounting rack is arranged in the casing, a monitoring unit, a cleaning mechanism, an air inlet mechanism and a traction mechanism are mounted on the mounting rack, the monitoring unit is used for monitoring dust in air, and the traction mechanism is used for monitoring dust in the air based on the Bernoulli principle. Air is pulled to flow in the monitoring unit in a negative pressure traction mode, the air inlet mechanism is used for guiding the air to enter the monitoring unit, the position of the air inlet end of the air inlet mechanism is adjustable, and the cleaning mechanism is used for conducting self-cleaning on the monitoring unit regularly and can detect the cleaning result in the reset process after cleaning. Self-cleaning of the monitoring unit can be achieved, the cleaning result can be detected, namely, cleaning is effective cleaning, flowing of air in t