Public groove type water-saving device

The utility model provides a public groove type water-saving device. The public groove type water-saving device comprises a urinal main body, a flushing pipe and a weighing sensor, a plurality of groups of pedal plates are uniformly distributed and inserted into the upper end surface of the front part of the urinal main body; four groups of weighing sensors are arranged between each group of pedalplates and the urinal main body; a group of flushing pipes are fixedly connected to a vertical plate on the rear end surface of the urinal main body; a plurality of groups of flushing nozzles are uniformly arranged on the flushing pipe; and each group of flushing nozzles is connected with the flushing pipe through one group of electromagnetic switches. By changing the conventional infrared accurate measurement mode, the position of a person going to the toilet is accurately determined by adopting the pedal and the weighing sensor, and water is accurately sprayed, so that the water waste is reduced, and the aim of sav