Bicycle treading frequency sensor and fixing device

Abstract

The invention discloses a bicycle treading frequency sensor. The bicycle treading frequency sensor comprises a signal collecting unit, a data transmitting unit and a power source. The signal collecting unit is arranged on a circuit board and used for collecting motion acceleration changes or / and angular velocity changes in different rotation directions of a middle axle in real time. The data transmitting unit is used for transmitting collected data to a terminal. The power source is used for working of all units. In the using process, the treading frequency sensor is fixed to the hollow middle axle of a bicycle, the middle axle, a crank and pedals of the bicycle rotate synchronously, in the process of riding, acceleration change or / and angular velocity change data are collected in real time, and then treading frequency data are collected in the process of riding. Because the treading frequency sensor ingenuously performs counting through periodical changes of the acceleration or / and angular velocity and other data in the process of bicycle motion and does not need to perform counting in a sensing mode through periodical relative motion between two separated components, the structure is simple, the size is small, and working is stable and reliable.

Description

technical field [0001] The invention relates to a motion data collection sensor, in particular to a sensor and a fixing device for collecting pedaling frequency during bicycle motion. Background technique [0002] During sports such as running and cycling, the sports performance can be recorded and analyzed by collecting important sports data, such as stepping frequency, so as to make a suitable sports plan. [0003] Existing sensors (also known as cadence sensors) used to collect bicycle pedaling frequency mainly use the induction principle, mostly magnets cooperate with Hall element counters, and magnets cooperate with induction coil counters to realize the collection of cadence data. Since the pedaling frequency sensor needs to cooperate with each other between two separate parts to obtain corresponding data, at least one part needs to be fixed on the vehicle frame, and the other part needs to be fixed on the crank linked with the center shaft to rotate synchronously. Ex...

AI Technical Summary

Problems solved by technology

Existing bicycles do not provide the position of the cadence sensor that can be firmly fixed. Usually, the corresponding parts can only be fixed on the corresponding position of the bicycle through straps. Long-term movement will cause the position between the two parts of the paired sensor to shift, which will affect the stability.

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