Bicycle control system

A system for controlling a bicycle, the system comprising:

• a first sensor configured to generate first data at a first sampling rate, the first data including a first data point received at a first time point and a second data point received at a second time point, the second time point being after the first time point, wherein the first data point and the second data point of the first data identify reception of magnetic field pulses at the first time point and the second time point, respectively;
• a second sensor configured to generate second data at a second sampling rate, the second sampling rate being greater than the first sampling rate, the second data including a data point identifying an acceleration of the bicycle;
• a memory configured to store data for a circumferential distance of a wheel of the bicycle;
• and
• a processor in communication with the memory, the first sensor, and the second sensor, the processor being configured to:
• receive the first data and the second data;
• determine a first speed, the determination of the first speed comprising:
• determination of a time period between the receipt of the second data point at the second time point and the receipt of the first data point at the first time point;
• and
• determination of the first speed based on the determined time period and the stored data for the circumferential distance of the wheel;
• determine a second speed, the determination of the second speed comprising:
• determination of a change in velocity, the determination of the change in velocity comprising integration of the acceleration of the data point over a sampling period, the sampling period being based on the second sampling rate;
• and
• determination of the second speed based on the determined change in velocity and the determined first speed.

A controller for a bicycle, the controller comprising:

• a processor configured to:
• receive first data from a first sensor at a first sampling rate, the first data including two data points identifying two time points at which magnetic field pulses are received by the first sensor, respectively;
• receive second data from a second sensor at a second sampling rate, the second sampling rate being greater than the first sampling rate, the second data including a data point identifying an acceleration of the bicycle;
• determine a first speed representation of the bicycle based on the identified two time points of the first data;
• determine a second speed representation of the bicycle based on the identified acceleration of the second data;
• determine a speed of the bicycle based on the determined first speed representation and the determined second speed representation.