Full-automatic spraying system and method integrating flying dust monitoring, water sprinkling and dust falling

The invention provides a full-automatic spraying system and method integrating flying dust monitoring and watering dust fall, smoke sensors are arranged on a construction site enclosure wall and the position, close to the center, in the site, the smoke sensors send detection signals to a flying dust detection system, and an alarm threshold value is preset in the flying dust detection system; the flying dust detection system is in signal connection with the user side mobile phone and transmits information to realize early warning; the flying dust detection system is connected with a flying dust signal generator in the spraying system, and the spraying system controls the water mist nozzles and the branch nozzles to spray water according to received signals, so that dust falling is realized. Automation can be completely achieved, wall spraying and in-site dust falling can be unified, capital investment brought by a watering cart and a water pipe is reduced, the sprayers are intermittently launched towards the i