Sensor modules mountable on a wheel are described with methods of use. A sensor module for a wheel includes a base module mountable to a rim. The sensor module further includes a first set of piezoelectric sensors coupled to the base module at a first side and a second set of piezoelectric sensors coupled to the base module at a second side. A method includes receiving a first force from a tire on a piezoelectric sensor mounted on a rim, the force resulting from an inflation of the tire and causing a first strain on the sensor. The method further includes receiving a second force on the sensor corresponding to a deformation of the tire due to surface contact, where the second force causes a second strain. The method also includes generating wheel data from electrical signals produced by the sensor; and transmitting the wheel data to a remote device.

Sensor modules mountable on a wheel are described with methods of use. A sensor module for a wheel includes a base module mountable to a rim. The sensor module further includes a first set of piezoelectric sensors coupled to the base module at a first side and a second set of piezoelectric sensors coupled to the base module at a second side. A method includes receiving a first force from a tire on a piezoelectric sensor mounted on a rim, the force resulting from an inflation of the tire and causing a first strain on the sensor. The method further includes receiving a second force on the sensor corresponding to a deformation of the tire due to surface contact, where the second force causes a second strain. The method also includes generating wheel data from electrical signals produced by the sensor; and transmitting the wheel data to a remote device.

A bicycle power system is disclosed that includes an axle for securement to a vehicle, the axle having a central axle axis extending therethrough, a wheel hub rotatable about the central axle axis and having a hub shell interconnected with a wheel rim, the hub shell including a shell side wall rotatably coupled to the axle, a shell top wall forming in part, a ring gear including inner ring gear teeth, and a shell cover having a cover wall radially extending from a stator carrier. The bicycle power system further includes a hub motor situated in the hub shell, the hub motor having a rotor with a plurality of magnets and a stator cavity, wherein the rotor rotates about the axle, a ring-shaped stator situated in the stator cavity and having an inner surface secured to the stator carrier, such that the stator rotates about the axle with the shell cover.

A sensor wheel for a human-powered vehicle comprises a wheel body and an attachment part. The wheel body is configured to be rotatable relative to a vehicle body of the human-powered vehicle about a rotational axis along with a rotational hub of the human-powered vehicle. The wheel body includes a plurality of openings spaced apart from each other in a circumferential direction with respect to the rotational axis. The attachment part is configured to be operatively coupled to the rotational hub. At least one opening of the plurality of openings has a radial length defined radially with respect to the rotational axis. The radial length is equal to or larger than 8 mm.

A sensor wheel for a human-powered vehicle comprises a wheel body and an attachment part. The wheel body is configured to be rotatable relative to a vehicle body of the human-powered vehicle about a rotational axis along with a rotational hub of the human-powered vehicle. The wheel body includes a plurality of openings spaced apart from each other in a circumferential direction with respect to the rotational axis. The attachment part is configured to be operatively coupled to the rotational hub. At least one opening of the plurality of openings has a radial length defined radially with respect to the rotational axis. The radial length is equal to or larger than 8 mm.

A hub is provided for a human-powered vehicle. The hub comprises a hub axle, a hub body, a sprocket support structure, a detected part and a rotation detection sensor. The hub axle has a center axis. The hub body is rotatably disposed around the center axis. The sprocket support structure is rotatably disposed around the center axis to transmit a driving force to the hub body while rotating in a driving rotational direction around the center axis. The detected part is provided to the sprocket support structure. The rotation detection sensor is configured to detect the detected part to detect rotation of the sprocket support structure around the center axis and being disposed in the hub body.

A hub is provided for a human-powered vehicle. The hub comprises a hub axle, a hub body, a sprocket support structure, a detected part and a rotation detection sensor. The hub axle has a center axis. The hub body is rotatably disposed around the center axis. The sprocket support structure is rotatably disposed around the center axis to transmit a driving force to the hub body while rotating in a driving rotational direction around the center axis. The detected part is provided to the sprocket support structure. The rotation detection sensor is configured to detect the detected part to detect rotation of the sprocket support structure around the center axis and being disposed in the hub body.

A speed sensing system for a bicycle includes a sensing device configured for mounting on the bicycle. The sensing device includes a sensor and a plurality of sensed elements. The sensor is configured for mounting at an angle relative to a horizontal hub plane. The plurality of sensed elements are configured to be sensed by the sensing device.

A straddled vehicle including a vehicle body frame having a head pipe extending downward and forward, a steering shaft supported by the head pipe to be rotatable left and right, a front fork connected to the steering shaft, a front fender supported by the front fork, a front cover of which a portion is arranged further forward than the head pipe, and a radar supported by the vehicle body frame and arranged further forward than the head pipe. The front cover includes a front end, and a lower edge extending leftward or rightward from the front end in a front view, at least a portion of the lower edge being located at or below the front end. At least a portion of the radar is arranged further downward than the front end of the front cover, further downward than the lower edge, and further upward than the front fender.

A straddled vehicle including a seat frame extending rearward and upward, a seat supported by the seat frame, a rear fender extending rearward and downward, the rear fender having a front end located further forward than a rear end of the seat frame, a tail light having a rear end thereof located further rearward than a rear end of the seat, and a radar including a transmitter that transmits radio waves, a receiver that receives the radio waves, and a casing that houses the transmitter and the receiver. The radar is supported by the seat frame. At least a portion of the radar is arranged further forward than a rear end of the tail light, further downward than an upper end of the seat frame, further rearward than the front end of the rear fender, and further upward than a lower end of the rear fender.