A fan unit in which a structure of a fan and a driving source thereof is improved to realize stable and high-efficient fan driving, thereby obtaining a high suction force in a stick type electric cleaner. The fan unit installed in a stick type electric cleaner includes a first fan and a second fan disposed in a line on the same rotation axis and a driving motor configured to drive the first fan and the second fan. The second fan is configured to be rotated in a direction opposite of a direction in which the first fan is rotated.

A robotic work tool comprising a motor for driving at least one wheel, an inclination sensor and a controller for controlling the operation of the robotic work tool, the controller being configured to; receive a signal indicating a collision; determine if the signal indicating a collision is above a collision threshold level and, if so, determine that a collision has been detected, the robotic work tool being characterized in that the controller is further configured to: receive an indication of an inclination; and to adapt the collision threshold accordingly based on said indication of an inclination.

A robotic dust collector includes a body, a wheel, a wheel motor, and a suspension device. The body accommodates a storage unit to store therein dust and dirt sucked in from a suction inlet. The wheel supports the body. The wheel motor generates motive power to rotate the wheel. The suspension device includes a support member, a motive-force generating mechanism, and an adjustment mechanism. The wheel is supported rotatably about a center axis by the support member. The motive-force generating mechanism gives a motive force to the support member to generate a biasing force to cause the wheel to protrude from a bottom face of the body. The adjustment mechanism adjusts the biasing force based on a protrusion amount of the wheel from the bottom face. The suspension device gives the biasing force adjusted by the adjustment mechanism to the wheel.

A solar tracker waterless cleaning system for cleaning solar panels of a solar tracker being able to be positioned at a pre-determined angle, including a docking station and an autonomous robotic cleaner (ARC), the docking station coupled with an edge of the solar tracker, the ARC including at least one rechargeable power source, at least one cleaning cylinder, at least one edge sensor, at least one cleaning cylinder direct current (DC) drive motor including a built-in encoder, a cleaning cylinder drive belt and a controller, the cleaning cylinder including a plurality of fins which rotates for generating a directional air flow for pushing dirt off of the surface of the solar tracker without water, the cleaning cylinder DC drive motor for driving the cleaning cylinder, the controller for controlling a cleaning process of the ARC, the built-in encoder for determining a revolutions per minute (RPM) of the cleaning cylinder.

A cleaner including a base defining a suction chamber, a brush roll driven by a brush roll motor, a sensor configured to sense a parameter related to a floor; and a controller having a memory and electronic processor. The controller is configured to receive the parameter, control the brush roll motor based on the parameter and a first floor coefficient, determine a second floor coefficient based on the parameter, and control the brush roll motor based on the second floor coefficient.

A surface cleaning apparatus includes a controller coupled to a sensor or a set of sensors that collects and transmits data to a remote computing device. The surface cleaning apparatus can use wireless or networking technology with a protocol for wireless communication with the remote computing device. The remote computing device is configured to identify an event at the surface cleaning apparatus and/or a change in the cycle of operation of the surface cleaning apparatus based on the transmitted data. Sensor data can be transmitted from the remote computing device to a different surface cleaning apparatus.

A surface cleaning apparatus includes a controller coupled to a sensor or a set of sensors that collects and transmits data to a remote computing device. The surface cleaning apparatus can use wireless or networking technology with a protocol for wireless communication with the remote computing device. The remote computing device is configured to identify an event at the surface cleaning apparatus and/or a change in the cycle of operation of the surface cleaning apparatus based on the transmitted data. Sensor data can be transmitted from the remote computing device to a different surface cleaning apparatus.

Described herein are systems and methods for assessing a health status of a cleaning head assembly in a mobile cleaning robot. The mobile robot includes motorized cleaning member that rotatably engages a floor surface to extract debris. An exemplary system includes a processor circuit that receives robot data produced by the mobile cleaning robot traversing an environment, determines a robot parameter using a portion of the received robot data corresponding to a floor area having a specific surface condition traversed repeatedly by the mobile cleaning robot, and determines a state of the cleaning head and an estimate of remaining useful life of the cleaning head based on the robot parameter. The determined state of the cleaning head system can be provide to a user via a user interface.

A method includes receiving mapping data collected by an autonomous cleaning robot as the autonomous cleaning robot moves about an environment. A portion of the mapping data is indicative of a location of an object in the environment. The method includes defining a clean zone at the location of the object such that the autonomous cleaning robot initiates a clean behavior constrained to the clean zone in response to encountering the clean zone in the environment.

A method of providing customized cleaning information, a vacuum cleaner, and a control method thereof are disclosed. The method of providing customized cleaning information includes obtaining information related to a cleaning module from a sensor of a vacuum cleaner, determining whether the cleaning module is in use among pre-registered cleaning modules based on the information related to the cleaning module, storing last used time information of the cleaning module based on the information related to the cleaning module, obtaining current time information, comparing the last used time information with the current time information to determine whether unused time of the cleaning module exceeds an unused time threshold specified for the cleaning module, and providing an indication that the cleaning module needs to be used when the unused time of the cleaning module exceeds the unused time threshold.