A robotic device for working on a surface includes a body including: a tool for working on the surface; a controller moving the body along the surface; a first set of at least two rotors mounted to the body and generating thrust in a first direction towards the surface; and a second set of at least two rotors mounted to the body and generating thrust in a second direction away from the surface. A sensor measures a distance between the body and the surface, and a computer adjusts the first set of rotors and the second set of rotors in response to the sensor to place the body in position to work on the surface. In particular, the first set of rotors and the second set of rotors generate a net force on the body to it in non-contact position to work on the surface.

A local obstacle avoidance walking method of a self-moving robot, comprising: step 100: the self-moving robot walks in a first direction, and when an obstacle is detected, the self-moving robot translates for a displacement M1 in a second direction perpendicular to the first direction, and step 200: determining whether the self-moving robot is able to continue to walk in the first direction after the translation, if a result of the determination is positive, the self-moving robot continues to walk in the first direction, and if the result of the determination is negative, the self-moving robot acts according to a preset instruction. The method enables the robot to accurately avoid a local obstacle, provides a concise walking route, shortens the determination time, and improves the working efficiency of the self-moving robot.

A local obstacle avoidance walking method of a self-moving robot, comprising: step 100: the self-moving robot walks in a first direction, and when an obstacle is detected, the self-moving robot translates for a displacement M1 in a second direction perpendicular to the first direction, and step 200: determining whether the self-moving robot is able to continue to walk in the first direction after the translation, if a result of the determination is positive, the self-moving robot continues to walk in the first direction, and if the result of the determination is negative, the self-moving robot acts according to a preset instruction. The method enables the robot to accurately avoid a local obstacle, provides a concise walking route, shortens the determination time, and improves the working efficiency of the self-moving robot.

A window-cleaning robot that includes: a powered agitator that, when active, mechanically removes debris from a window surface; a cleaning pad, which is wetted with a cleaning fluid and contacts the window surface so as to remove debris therefrom with the aid of the cleaning fluid; and a movement system, for example including a number of wheels, which moves the robot over the window surface and has a defined forwards direction; the agitator is located forwards of the cleaning pad and the agitator and the cleaning pad are arranged such that, as the robot moves over the window surface in the forwards direction, the agitator addresses a width in a width direction, which is perpendicular to the forwards direction and parallel to the window surface, that is greater than the width addressed by the cleaning pad.

A window-cleaning robot that includes: a powered agitator that, when active, mechanically removes debris from a window surface; a cleaning pad, which is wetted with a cleaning fluid and contacts the window surface so as to remove debris therefrom with the aid of the cleaning fluid; and a movement system, for example including a number of wheels, which moves the robot over the window surface and has a defined forwards direction; the agitator is located forwards of the cleaning pad and the agitator and the cleaning pad are arranged such that, as the robot moves over the window surface in the forwards direction, the agitator addresses a width in a width direction, which is perpendicular to the forwards direction and parallel to the window surface, that is greater than the width addressed by the cleaning pad.

A quadcopter pressure washer that may facilitate cleaning objects and surfaces in remote areas. The quadcopter pressure washer includes a tubular airframe, a plurality of rotary motors, a battery and controller, a pair of antennae, a signal receiver, a nozzle, a turret, a high-pressure hose, a pressure washer, a direct current or a DC power source, an alternating current/direct current or a AC/DC converter and a 120V AC power source. The quadcopter pressure washer also includes an operator control panel include additional a pair of antennae that extend upward in a programmable position from the operator control panel to transmit or receive any suitable electromagnetic signals. The additional pair of antennae utilizes state-of-the-art Doppler radar technology in electrical communication with the battery and controller. The operator control panel includes a signal emitter positioned in front of the operator control panel.

A quadcopter pressure washer that may facilitate cleaning objects and surfaces in remote areas. The quadcopter pressure washer includes a tubular airframe, a plurality of rotary motors, a battery and controller, a pair of antennae, a signal receiver, a nozzle, a turret, a high-pressure hose, a pressure washer, a direct current or a DC power source, an alternating current/direct current or a AC/DC converter and a 120V AC power source. The quadcopter pressure washer also includes an operator control panel include additional a pair of antennae that extend upward in a programmable position from the operator control panel to transmit or receive any suitable electromagnetic signals. The additional pair of antennae utilizes state-of-the-art Doppler radar technology in electrical communication with the battery and controller. The operator control panel includes a signal emitter positioned in front of the operator control panel.

An autonomous wall cleaner is disclosed. The autonomous wall cleaner comprises a vacuum generator, a number of suction cups, a number of wheels, a number of first actuators, a cleaning element and a controller located on a frame. The wheels are symmetrically arranged on both sides of the frame. The first actuator is capable of driving the wheels. Each suction cup is connected with the vacuum generators and has a sliding disk and an elastic bowl. When the wheels are moving on the wall, the suction cups are sucking to the wall and sliding.

An autonomous wall cleaner is disclosed. The autonomous wall cleaner comprises a vacuum generator, a number of suction cups, a number of wheels, a number of first actuators, a cleaning element and a controller located on a frame. The wheels are symmetrically arranged on both sides of the frame. The first actuator is capable of driving the wheels. Each suction cup is connected with the vacuum generators and has a sliding disk and an elastic bowl. When the wheels are moving on the wall, the suction cups are sucking to the wall and sliding.

A self-moving robot comprises a robot body. A control device is provided in the robot body, and a functional processing module and a moving module connected to each other are provided in the robot body. The moving module is controlled by the control device to drive the functional processing module to conduct mobile processing work in a working space. An opening hole is formed inside the functional processing module so that the moving module is arranged rotatably in the opening hole in an embedded manner. The moving module can freely rotates relative to the functional processing module through a connection mechanism. A walking method of the self-moving robot is further disclosed. The present invention is of simple structure, low cost and significantly improved moving mode, and the cleaning efficiency of the self-moving robot is improved with the same amount of time or power.