A magnetoelastic torque sensor having an evaluation unit and at least three magnetic field sensors. The evaluation unit acquires at least one measurement signal of a first magnetic field sensor, at least one measurement signal of a second magnetic field sensor and at least one third measurement signal of a third magnetic field sensor of the magnetoelastic torque sensor, and to determine a torque exerted on the shaft using the at least one measurement signal of the first magnetic field sensor, the at least one measurement signal of the second magnetic field sensor, the at least one measurement signal of the fourth magnetic field sensor, and a ratio of a distance between the second magnetic field sensor and the third magnetic field sensor in an axial direction to a distance between the first magnetic field sensor and the second magnetic field sensor in the axial direction.

A magnetoelastic torque sensor having an evaluation unit and at least three magnetic field sensors. The evaluation unit acquires at least one measurement signal of a first magnetic field sensor, at least one measurement signal of a second magnetic field sensor and at least one third measurement signal of a third magnetic field sensor of the magnetoelastic torque sensor, and to determine a torque exerted on the shaft using the at least one measurement signal of the first magnetic field sensor, the at least one measurement signal of the second magnetic field sensor, the at least one measurement signal of the fourth magnetic field sensor, and a ratio of a distance between the second magnetic field sensor and the third magnetic field sensor in an axial direction to a distance between the first magnetic field sensor and the second magnetic field sensor in the axial direction.

A power measurement device, which may be mounted to an inside area of a crank arm, includes processing circuitry within a housing. The processing circuitry is coupled with strain gauges mounted on the crank arm, and produces a power value that is wireless transmitted to a separate display that may receive and display power measurements. The housing may include a mounted portion and a cantilever portion where the mounted portion houses the processing circuitry and the cantilever portion houses batteries supply energy for the processing circuitry and other features.

A power switching structure includes an input shaft, a detection shaft sleeve fit over the input shaft, an assisting power assembly, and an output assembly selectively drivable by the input shaft and the assisting power assembly. The output assembly includes first and transmission sleeves rotatably mounted to the input shaft. The assisting power assembly includes a power member rotatably mounted to the second transmission sleeve. A one-way bearing is arranged between the first and second transmission sleeves and the power member. An output member is mounted on the second transmission sleeve. A micro-motion static frictional force is induced between the first and second transmission sleeves and the input shaft to allow the detection shaft sleeve to directly and accurately measure a torque value of the input shaft. The one-way bearing arranged between the first and second transmission sleeves and the power member allows for selection among sources of power.

An operation parameter detecting apparatus for a vehicle is provided to obtain a pedaling torque value, an angle of a central shaft with a magnetic ring, a corresponded rotating speed and a corresponded pedaling power, respectively by measuring an electromagnetic force of a coil induced by a magnetic variation due to a deformation of a covered magnetic sleeve linked to a central shaft, a voltage output from at least a Hall corresponded to a magnetic flux density of which the distribution in a 1, 2 or 3 dimensional space is partly a monotonic increasing or decreasing function in an area with the same polarity, and at calculation relative to the time.

A pedal for bicycles comprising a pedal pin and a pedal body coupled in a freely rotatable manner on the pedal pin. An internal chamber obtained in the pedal pin has an internal surface extending along a reference axis approximately coaxial with the same. The pedal further comprises an electronic measurement system provided with deformation sensors configured to detect electric parameters indicative of the mechanical deformation of the pedal pin, an electronic circuit configured to determine, based on the electric parameters, the mechanical deformation of the pedal pin, and an electric generator which generates electrical power based on the rotation of the pedal body and is arranged in the internal chamber of the pedal pin.

A pedal for bicycles comprising a pedal pin and a pedal body coupled in a freely rotatable manner on the pedal pin. An internal chamber obtained in the pedal pin has an internal surface extending along a reference axis approximately coaxial with the same. The pedal further comprises an electronic measurement system provided with deformation sensors configured to detect electric parameters indicative of the mechanical deformation of the pedal pin, an electronic circuit configured to determine, based on the electric parameters, the mechanical deformation of the pedal pin, and an electric generator which generates electrical power based on the rotation of the pedal body and is arranged in the internal chamber of the pedal pin.

A transmission control system is configured to be used with a human-powered vehicle that includes a crank, a first rotation body rotated independently from the crank, a drive wheel, a second rotation body rotated independently from the drive wheel, a transfer body that transfers rotation force between the first and second rotation bodies, and a transmission that controls the transfer body and shifts a transmission ratio. The transmission control system includes a motor that drives the transfer body, a first detector that detects at least one of acceleration and vibration of the human-powered vehicle, and an electronic controller configured to control the motor in accordance with a detection result of the first detector upon generation of a shift request for the transmission in a state in which the drive wheel is rotated and a rotational angle of the crank is maintained in a predetermined range.

Gear arrangement for a vehicle, having an input shaft, a layshaft, an output shaft connected to a drive wheel of the vehicle, a plurality of shiftable first gear wheel sets which connect the input shaft and the layshaft and which are each associated with at least one gear stage, and a machine gear connected to one of the shafts and into which the drive torque of an electric machine can be introduced. The first gear wheel sets form a first part-gear mechanism, wherein at least one second shiftable gear wheel set connects the layshaft and the output shaft and forms a second part-gear mechanism, wherein the at least one second gear wheel set is associated with at least one gear stage and wherein the machine gear is arranged in an axial direction between the first part-gear mechanism and the second part-gear mechanism.

A crank transmission having a crankshaft for connection to at least one foot or hand crank and at least one gear wheel driven by means of the crankshaft (5) is proposed. A coupling unit is provided between the crankshaft and the gear wheel. Under load, the coupling unit has at least temporarily an angular offset between a crank-side receiving region and an output region connected to the gear wheel for receiving and outputting the torque generated via the crank.