Dirt detection device of clothes treatment equipment, control method and related equipment

The invention provides a dirt detection device of clothes treatment equipment, a control method and related equipment. The smudginess detection device comprises a bottom plate configured to be connected with the inner wall of an outer barrel of the clothes processing equipment, and a conductive plate is arranged on the side, away from the inner wall of the outer barrel, of the bottom plate; the two conductive probes are provided with contact positions in contact with the conductive plate and far positions far away from the conductive plate; the driving unit is connected with the two conductive probes and is used for driving the two conductive probes to be switched between the contact position and the far position; and the resistance detection unit is connected with the two conductive probes and is used for detecting the resistance value between the two conductive probes when the two conductive probes are in the contact position so as to detect the smudginess degree of the inner wall of the outer barrel. The s