Spray cleaning device and control method thereof

The invention discloses a spray cleaning device and a control method thereof. The device comprises a cleaning cavity; a spraying arm rotatably arranged in the cleaning cavity, wherein a trigger part rotating along with the spraying arm is arranged on the spraying arm; a water inlet module, wherein the water inlet end of the water inlet module communicates with cleaning water, and the water outlet end of the water inlet module selectively communicates with the spraying arm; at least two signal detection units, wherein all the signal detection units are arranged in the cleaning cavity in the circumferential direction at intervals, and each signal detection unit is used for detecting operation parameters of the triggering part passing through the signal detection unit; and a control module electrically connected with the water inlet module and the signal detection units. Whether the spraying arm is blocked by tableware or not can be accurately recognized, the working state of the water inlet module can be automa