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US 11,530,015 B2Granted
Bicycle control system
AssigneeSram, LLC
InventorsSage Hahn, Brian Jordan, Kevin Wesling
Life of this patent
Estimating the term…
Abstract
A bicycle with an electric pedal assist motor capable of driving a chainring independent of cranks includes wheel speed sensors and crank cadence sensors. The wheel speed sensors and the crank cadence sensors measure wheel speed and crank cadence, respectively, and provide the measured wheel speed and crank cadence to controller of the bicycle. The controller activates motor overdrive based on the measured wheel speed and/or the measured crank cadence.
Claims8
A method for controlling electronic shifting of a bicycle, the method comprising:
- initiating, by a processor, automatic control of the electronic shifting of the bicycle;
- identifying, by the processor, a minimum gear, beyond which a derailleur is not shiftable during the automatic control of the electronic shifting when the bicycle is in a particular state;
- receiving, by the processor, cadence data from a cadence sensor of the bicycle;
- after the initiating of the automatic control of the electronic shifting, identifying, by the processor, a target gear based on the received cadence data;
- comparing, by the processor, the identified target gear to the identified minimum gear;
- and
- preventing or allowing, by the processor, the shifting of the derailleur of the bicycle to the identified target gear based on the comparison.
4 more elements
Dependencies are inferred from the claim text.