The present disclosure relates to a plurality of autonomous mobile robots. A plurality of autonomous mobile robots comprise a first mobile robot including an antenna configured to transmit and receive signals, and a second mobile robot including a first antenna and a second antenna disposed on a front area of a main body thereof to transmit and receive signals to and from the antenna of the first mobile robot. The second mobile robot comprises a control unit configured to determine a relative position of the first mobile robot using the signal received by the first antenna and the second antenna.

A moving device and an object detection method thereof are provided. A method, performed by a moving device, of generating a map related to an object in a task space includes radiating at least one sensing signal toward aboveground and underground regions in a vicinity of the moving device, receiving signals reflected from an aboveground object located on a ground in the task space and an underground object located under the ground in the task space, and generating the map indicating distribution of the aboveground object and distribution of the underground object, based on the received reflected signals.

A hand vacuum cleaner may have an air treatment member and a pre-motor filter downstream from the air treatment member. A suction motor and fan assembly may be is positioned downstream of and below the pre-motor filter, a post motor filter may be positioned downstream of the suction motor and fan assembly and in the lower end of the hand vacuum cleaner. A clean air outlet may be positioned below the suction motor and fan assembly whereby air travels downwardly from the suction motor and fan assembly and through the post motor filter to the clean air outlet.

A robot for detecting a dangerous situation using artificial intelligence includes a memory configured to store a voice recognition model for inferring whether a current situation is the dangerous situation from voice data and an image recognition model for inferring whether the current situation is the dangerous situation from image data, and a processor configured to acquire one or more of the voice data or the image data and output a notification indicating the dangerous situation when the dangerous situation is detected from the voice data using the voice recognition model or when the dangerous situation is detected from the image data using the image recognition model.

A hand vacuum cleaner may include a suction motor and fan assembly that is positioned downstream of a pre-motor filter and in an upper end of the hand vacuum cleaner. A post motor filter may be positioned downstream of the suction motor and fan assembly and may be in the lower end of the hand vacuum cleaner. The clean air outlet may be positioned below the suction motor and fan assembly whereby air may travel generally downwardly from the suction motor and fan assembly and through the post motor filter to the clean air outlet.

Provided is a vacuum attachment for picking up an object. The vacuum attachment in embodiments comprises a hollow body with open ends including an intake end as well as a vacuum-side end. The vacuum-side end is sized and configured to removably attach to an intake port of a vacuum source. A channel is formed within the hollow body and extends along a longitudinal axis of the hollow body from the vacuum-side end to the intake end. A filter is disposed within the channel, transverse to the longitudinal axis of the hollow body, and adjacent to, but offset from, the intake end of the hollow body so as to form a lip surrounding the filter. The filter is fixedly attached to an inner surface of the hollow body. In some embodiments, the filter is configured to pass solid particulates but to block objects larger than solid particulates.

An autonomous mobile robot includes a body, a drive supporting the body above a floor surface, a light-propagating plate positioned on the body and having a periphery defining a continuous loop, light sources each being positioned to direct light through a portion of the plate to a portion of the continuous loop, and a controller to selectively operate the light sources to provide a visual indicator of a status or service condition of the autonomous mobile robot. The drive is configured to maneuver the mobile robot about the floor surface.

A dust collector has a well-balanced weight. The dust collector includes a body housing, a motor located inside the body housing, a fan rotatable by the motor, and a battery mount located inside the body housing and frontward from the motor.

The flying insect vacuum device removes annoying insects, and particularly flying insects such as flies, from inside or outside of the home or anywhere else they might show up. The flying insect vacuum device is a portable handheld unit with a handle, battery, and eject battery button on the backside of the device. The power button turns the vacuum motor on and off. On the front of the invention is a large grill over a funnel that sucks the flies into a storage compartment in the center of the device. The device has strong vacuum suction, an adjustable front suction tool, an insect trapping compartment, and a quick release on and off button.

A cleaning device includes a motor; a plurality of receptacles configured to: communicate with the motor; collect, via vacuum, objects of different sizes from outside of the cleaning device; and reversibly nest and unnest with one another.