Method for evaluating particle signal in vacuum cleaner used for cleaning floor surface, involves influencing rotational speed or power of blower and/or roller, and changing sensitivity of evaluating circuit based on adjusted speed or power

摘要

The method involves influencing a rotational speed or power of a high-speed blower (8) and/or a rotating bristle roller (18) of an electrical brush (16) by a control device based on a particle signal, which is processed by an evaluating circuit. A sensitivity of the evaluating circuit is changed by the control device based on the adjusted rotational speed or the power. The sensitivity is lowered when the rotational speed or the power is high. The sensitivity is increased when the rotational speed or the power is low.