Electronic vacuum cleaner control system.

摘要

An electronic control system (70) for a vacuum cleaner is provided that supports two-way communications between a control unit (72) in the handle of the vacuum cleaner and a suction motor (92) and various sensors in the canister of the vacuum cleaner, using wires (106) contained within the hose of the vacuum cleaner. The vacuum cleaner may be placed in one of two user-selectable bag change modes. In a maximum suction (MAX SUCTION) bag change mode, the electronic control system of vacuum cleaner will shut off the vacuum cleaner when the vacuum cleaner bag has filled and the suction power of the unit has been degraded as a result. If the maximum fill (MAX FILL) bag change mode is selected, the electronic control system (70) will shut off the vacuum cleaner only after the bag has filled to the maximum extent allowable. The control system has indicator lights (82) to display to the user whether the maximum suction or the maximum fill mode has been selected. The control unit (72) also includes a dust detection circuit (88) linked to an optical dust sensor (90) which is based on one-piece lens units located in the vacuum cleaner handle for monitoring the frequency with which dust particles flow through the hose into the vacuum cleaner. The control system can automatically adjust the power setting of the vacuum cleaner based on the measured frequency. <IMAGE>