A self-propelled, one-wheeled vehicle may include a board having two deck portions each having a concave front footpad configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. The concave front footpad has a rider detection sensor in the form of a membrane switch conforming to the shape of the footpad (e.g., facilitated by one or more slots formed in the membrane switch). A motor assembly drives the vehicle in response to board orientation and rider detection information. The vehicle may have a secondary battery chargeable via a three-pin charging port including an input pin, a ground pin, and an identification pin configured to receive an expected identification signal from an external charging circuit.

The invention relates to a system for variable marking of a playing field (1), comprising at least two marking devices (2) designed as laser projectors, an analysis device designed to analyse a calibration pattern (3) projected onto the playing field (1) by means of a marking device (2), as well as designed to determine a distortion function from the calibration pattern (3), a control device designed to determine the position of a marking pattern (4) on the playing field (1), and a transformation device designed to apply the distortion function to the marking pattern (4) in order to obtain a target marking (5). The invention further relates to a method for variable marking of a playing field (1).

The present invention relates to motorized platforms wearable by a user, for enhancing the speed of walking while maintaining stability and reducing overall weight, due to a simplified structure and relatively modest number of components.

An electric vehicle includes a lateral self-stabilization system and may further include a fore-aft self-stabilization system. The lateral self-stabilization system may include a controller configured to cause an actuator to laterally tilt a frame of the vehicle based on sensed information relating to an orientation of the vehicle, or portion thereof, about a roll axis. The frame of the vehicle may include any suitable structure configured to be laterally tilted by the actuator relative to an axle of the vehicle. The fore-aft stabilization system may include a motor controller configured to drive a motor of the vehicle based on sensed information relating to a pitch angle of the vehicle. In some examples, the vehicle is a robotic vehicle.

A sports field marking assembly and method of marking creates a boundary reference point and field lines on a field or for coaching. The assembly provides a marker anchoring device that is loaded with field markers. The marker anchoring device comprises a translatable handle coupled to a spring-loaded piston that discharge the field markers into the surface of the sports field. Bristles couple to a rear end of the marker body for visibility above the surface of the field. A tape canister couples to the marker anchoring device to dispense a measuring tape. The measuring tape couples to the field markers, serving to delineate the boundaries and lines on the field. Multiple aligners anchor into the sports field to retain the measuring tape in the formed patterns. The aligners have collapsible and moveable guide posts that can be selectively raised to guide the measuring tape though the chosen guide posts.

Systems and methods for providing a slalom racing gate monitor system are provided herein. A system includes a microcontroller; a first, second, and third sensor, each coupled to the microcontroller, the first, second, and third sensors each having a field of view and disposed on a slalom pole, and disposed where the fields of view of the first, second, and third sensors substantially cover a 360 degree field of view around the slalom pole; wherein the microcontroller is to: obtain a sequence of sensor readings from a plurality of sensors of the first, second, and third sensors, each reading in the sequence of sensor readings indicating an object detected in the field of view of the respective sensor; determine whether the object passed the slalom pole on a correct side; and present a notification of whether the object passed the slalom pole on the correct side.

A personal mobility device includes a frame connected to at least one wheel, a connection part on the frame, a boarding part connected to the connection part to be tiltable, a first sensor disposed on the frame to measure an inclination of the frame, and a second sensor disposed on the boarding part to measure an inclination of the boarding part.

Presented is an apparatus and system for an artificial turf system. The artificial turf system includes a backing layer having a plurality of fibers extending therefrom. The artificial turf system further includes a plurality of impact sensors located at least partially on, in, and/or beneath the backing layer, wherein the plurality of impact sensors are operable to detect a force or pressure applied to the backing layer.

A method, system and apparatus for carrying a user including a board for supporting the user, a plurality of ground-contacting members coupled with the board, a motorized drive assembly coupled with the ground-contacting members and one or more sensors coupled with the drive assembly. In operation, the drive assembly adjusts the velocity of the ground-contacting member based on one or more distances of the board from a surface below the board as detected by the sensors.

A human-machine interaction somatosensory vehicle is provided. The human-machine interaction somatosensory vehicle may include a vehicle body and two wheels mounted on the vehicle body. The two wheels may rotate around the vehicle body in a radial direction. The vehicle body may include a support frame, two pedal devices mounted on the support frame, a controller, and a driving device configured to drive the two wheels. The support frame may be an integral structure rotatably connected to the two pedal devices. The two pedal devices each may include a pedal foot board and a first position sensor. The first position sensor may be mounted between the pedal foot board and the support frame, and configured to detect stress information of the pedal device. The controller may be configured to control the driving device to drive the two wheels to move or turn based on the stress information of the pedal devices.