The invention discloses an
automatic control system and an
automatic control method for mission monitoring of radioactive airborne effluents. According to the
automatic control system, an emission flow monitoring sensor is connected with a flow monitoring PLC (
Programmable Logic Controller) through a cable; the flow monitoring PLC is connected with an automatic
control unit through a
signal line; the automatic
control unit is connected with a flow adjusting valve, an
electromagnetic valve, sampling monitoring equipment, a
mass flow meter, a pressure gauge and a pump respectively through a
signal control line; and an airborne substance sampling head is connected with a
tail gas emission
pipe after being connected with the flow adjusting valve, the
electromagnetic valve, the sampling monitoring equipment, the
mass flow meter, the pressure gauge and the pump respectively in sequence through a sampling
pipe. Due to the adoption of the automatic
control system and the automatic control method disclosed by the invention, the sample representativeness of
effluent monitoring under the conditions of separate or simultaneous emission, large differences among airborne substance source items and scattered emission in a plurality of radioactive operating places can be enhanced, the labor intensity of
effluent monitoring can be relieved, and the working efficiency is increased; and the
system and the method have the characteristics of stability, reliability, intelligent regulation and control, and unattended operation.