Importance

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Abstract

A trash detecting device used in an automatic vacuum cleaner is disclosed to include a trash box defining therein a trash chamber, and an ultrasonic detection module mounted in the trash box. The ultrasonic detection module includes a control circuit, a transmitter electrically connected to the control circuit and controllable by the control circuit to transmit an ultrasonic signal toward the trash chamber, and a receiver electrically connected to the control circuit and adapted for receiving an eco signal created by the ultrasonic signal being reflected off a trash in the trash chamber and transmitting the eco signal to the control circuit for processing and causing the control circuit to output an examination signal, and thus, the trash detecting device is able to detect whether the trash amount in the trash box has reached saturation.

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First Claim