Main structure concrete on-site automatic curing system and control method thereof

The main structure concrete on-site automatic curing system comprises a spraying head, a water pipe, a spraying controller, a water supply tank, a first humidity sensor and a second humidity sensor. The spray head, the water pipe and the first humidity sensor are arranged in a floor; the second humidity sensor is arranged below the staircase of the floor; the dense mesh type safety net is used for sealing the interiors of the floors; the plugging structure is used for plugging reserved holes of the floors; the dense mesh type safety net for sealing the interior of the floor and the plugging structure for plugging the reserved hole of the floor are arranged, and the first humidity sensor and the second humidity sensor are matched with the spraying controller to control the spraying head to be opened or closed, so that the relative humidity in the floor can reach the relative humidity of the maintenance standard in most time; and therefore, the quality of structural concrete curing is improved, and the water co