an infrared sensor flushing control method and the plumbing fixture flushing system . the realization of flushing with two different jets is achieved by using the infrared sensor and mcu to control the electromagnetic - controlled valves . the mcu preinstalled with three different solid waste flushing procedures and one liquid waste flushing procedure , providing the water - saving consumption according to the requirements of each individual and the automatic discrimination of the usage . the integrated design also accomplishes the purpose of convenient installation and space saving .