In practical application, it is found that the traditional exhaust gas treatment system has the problem of excessive energy consumption. Usually, there are many exhaust emission points in a waste gas treatment system, and most of the exhaust treatment systems have no automatic screening and automatic regulation, so the centrifugal fans in the exhaust gas treatment system will operate at the maximum power, no matter how many exhaust emissions are opened. " The system should be more intelligent and automatically adjust the power of the centrifugal fan in the exhaust gas treatment system according to the actual exhaust volume. For this reason, according to the actual discharge volume, the operation power of the environmental protection equipment can be automatically adjusted to achieve the goal of more energy saving.