Pop-up sprinkler comprising a sensor to detect the position or rotation

摘要

An irrigation sprinkler (10) is for use in distributing water to an area of vegetation, and has a rotatable nozzle (16,26) for dispersing the water by rotation of the nozzle (16,26). A magnet (50) is coupled or connected to the nozzle (16,26) and rotates synchronously with the rotation of the nozzle. A sensor unit (30) is disposed adjacent to the nozzle and detects a magnetic field generated by the magnet during nozzle rotation to generate a signal indicative of the speed and direction of rotation of the nozzle.