Automatic flushing system for public toilets

The utility model relates to an automatic flushing system for public toilets. The automatic flushing system comprises a group of flushers which are respectively arranged corresponding to each squatting position and are respectively provided with a sensor, a singlechip and an electromagnetic valve. The automatic flushing system also comprises a bus, and each singlechip is connected with the bus through a port circuit. The automatic flushing system uniformly controls all the flushers and avoids the water pressure drop caused by simultaneous flushing, and thereby, the public health is guaranteed, and the water resources are saved; simultaneously, due to the fact that the one-to-one modular design is adopted, the scheme has extremely strong adaptability and expansibility to various systems, and the fault of a single controller can not influence the normal operation of other flushers, and the automatic flushing system has very high stability.