Controllable sinking and floating swimming pool robot and sinking and floating control method for swimming pool robot

A controllable sinking and floating swimming pool robot, comprising:

• a sinking and floating control unit configured to control a swimming pool robot to float and sink;
• a waterline detection unit configured to detect a positional relationship between the swimming pool robot and a waterline of a liquid surface of a swimming pool where the swimming pool robot is located;
• and
• a main control unit configured to control a working state of the sinking and floating control unit,
• wherein the main control unit is capable of controlling the swimming pool robot to find a side wall or a slope based on operational requirement information of the swimming pool robot and enabling the swimming pool robot to crawl along the side wall or the slope;
• controlling the waterline detection unit to detect the positional relationship between the swimming pool robot and the waterline of the liquid surface of the swimming pool where the swimming pool robot is located;
• and
• controlling the sinking and floating control unit to enter a floating working state based on detection results to realize a floating of the swimming pool robot,
• wherein the sinking and floating control unit is controlled to stop working after the sinking and floating control unit enters the floating working state for a predetermined time.