Filling level indicator for collection basket of e.g. mower, has sensors e.g. semiconductor sensor, for measuring filling level of collection basket, where sensors have non-movable parts

摘要

The indicator has sensors e.g. semiconductor sensor, piezoelectric pressure sensor and acoustic harmonic wave pressure sensor, for measuring a filling level of a collection basket, where the sensors have non-movable parts. Signals from the sensors are fed to an electronic compensation and/or evaluating electronic system. The sensors measure atmospheric pressure difference that is proposed as measuring parameter.