Autonomous planar surface cleaning robot

An autonomous planar surface cleaning robot, comprising:

• a main body having a top portion and a bottom portion, the bottom portion defining an outer portion defining a surface area about a perimeter thereof and an inner portion defining a cavity formed within the outer portion;
• a driving mechanism supported by the main body;
• at least one vacuum source;
• a vacuum sensor supported by the main body and in fluid communication with the at least one vacuum source through a fluid channel;
• and
• a control unit supported by the main body and electrically coupled to the driving mechanism, the at least one vacuum source, and the vacuum sensor, wherein the control unit is configured to control the robot to turn direction when the control unit receives a signal from the vacuum sensor indicating that a degree of vacuum pressure within the fluid channel is below a predetermined vacuum pressure.

An autonomous planar surface cleaning robot, comprising:

• a body;
• a driving mechanism supported by the body;
• a vacuum sensor supported by the body;
• and
• a control unit supported by the body and electrically coupled to the driving mechanism and the vacuum sensor, wherein the control unit is configured to control the robot to turn direction when the control unit receives a signal from the vacuum sensor indicating that a degree of vacuum pressure within the fluid channel is below a predetermined vacuum pressure.