Transmission-type visibility meter based on atmospheric attenuation algorithm

The utility model relates to the technical field of environmental monitoring, and discloses a transmission-type visibility meter based on an atmospheric attenuation algorithm, which comprises a supporting rod, a control box is fixedly arranged in the middle of the supporting rod, and an equipment body is fixedly arranged at the upper part of the supporting rod. Through the arrangement of a water tank, a pressing plate and a spraying device, the pressing plate can be pushed downwards by controlling a hydraulic cylinder, so that clean water in a drainage cavity enters an annular channel from a sewer pipe, a main pipe and a branch pipe in sequence and is sprayed out from a spraying head under the action of water pressure, and a lens can be cleaned; the water pressure can be increased by increasing the downward pressing speed of the pressing plate, so that the spray head can overcome the elastic force of the bent spring to be straightened under the action of the water pressure, namely, the spray head and the conn