Automatic control element with uniformly-distributed stepping frequency

An automatic control element with uniformly-distributed stepping frequency, comprising:

• a sprinkler (4);
• a fluidic element (7) connected to the sprinkler (4);
• and
• a water tank (1) disposed about an exterior of the sprinkler (4),
• wherein the fluidic element (7) further comprises an outlet cover plate (10) disposed on an outlet of the fluidic element (7), a water inlet (8) and a first air supply pore (9) are symmetrically arranged on the fluidic element (7), and a second air supply pore (19) is formed on the water inlet (8);
• wherein the sprinkler (4) comprises a water distributor (11), and the water distributor (11) is in communication with an inner cavity of the water tank (1);
• wherein the water tank (1) is in a shape of a hollow cylinder having a through hole along an axis thereof, and a signal nozzle (13) is affixed to an exterior of the water tank and the signal nozzle (13) is connected to the water inlet (8) via a conduit (15);
• and
• wherein the sprinkler is configured to receive water and output the water to the fluidic element directly, and send the water from the water tank to the water inlet.