Carpet recognition method applicable to robot cleaner
AssigneeBeijing Roborock Innovation Technology Co., Ltd.
InventorsYanjun Liu, Zhenyu Liang, Chi Zhang, Qiong Du, Yinqi Liu, Lizhi Xiang
Life of this patent
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Abstract
A carpet recognition method for a robot cleaner. The robot cleaner comprises a sleeve and an ultrasonic sensor, wherein the ultrasonic sensor is fixed in the sleeve. The recognition method comprises: controlling the ultrasonic sensor to vertically transmit an ultrasonic signal to the current ground, and to receive an actual echo signal reflected by the current ground; and determining whether the actual echo signal is different from the standard echo signal of the normal ground, and if so, recognizing the current ground as a carpet surface.
Claims9
A carpet recognition method applicable to a cleaning robot, the cleaning robot comprising a sleeve and an ultrasonic sensor fixed in the sleeve, the recognition method comprising:
- obtaining a standard echo signal of a normal ground;
- controlling the ultrasonic sensor to transmit an ultrasonic signal vertically to a current ground and to receive an actual echo signal reflected by the current ground;
- determining whether the actual echo signal is different from the standard echo signal of the normal ground;
- and
- recognizing the current ground as a carpet surface in a case that the actual echo signal is different from the standard echo signal of the normal ground,
- wherein obtaining the standard echo signal of the normal ground comprises:
- providing a user with a learning mode;
- guiding the user to collect echo data of the normal ground and echo data of the carpet surface by using the cleaning robot;
- and
- obtaining the standard echo signal of the normal ground based on the echo data of the normal ground and the echo data of the carpet surface.
Dependencies are inferred from the claim text.