Pedal information sensing device and bicycle

Abstract

The invention provides a pedal information sensing device and a bicycle, and relates to arrangement of a pedal driving part. Problems that in the prior art, pedal information detection precision is poor, and equipment is complex are solved. According to the pedal information sensing device, a rotation signal generation part is a magnetic ring; a rotation signal detection part includes a Hall element A and a Hall element B; magnetic poles are distributed in the circumferential direction of the magnetic ring; the polarities of two adjacent magnetic poles on the magnetic ring are opposite; a periodically changing magnetic field is formed along the circumferential direction of the magnetic ring; the Hall element A and the Hall element B are arranged corresponding to magnetic poles on the magnetic ring; and output signals of the two Hall elements are connected with an exclusive-OR gate circuit, output signals of the two Hall elements are connected with input of a first D trigger, output signals of the exclusive-OR gate circuit and the first D trigger are connected with the input of an AND gate circuit, and output signals of the AND gate circuit reflect pedal information. The pedal information sensing device can realize accurate detection of pedal information, and is realized by adopting simple hardware.

Description

technical field [0001] The invention belongs to the technical field of riding vehicle sensors, and relates to a pedal information detection device. Background technique [0002] With the popularity of electric assisted bicycles in the global market, the use of electric assisted bicycles and the pedaling force and frequency of the rider are transmitted to the controller, so that the controller can be controlled by the rider through the man-machine interface. Adjust the required assist ratio, and then drive the motor to provide auxiliary power for the bicycle. [0003] The simple cadence sensor used in the early wheel hub motors only calculates the speed of the rider’s pedals to provide assistance, and the common sensor is 12 magnetic poles. The accuracy is not high, and there is no forward and reverse judgment, which is easy to make the rider When you start pedaling, you need to rotate a large angle before the motor can output. The same also happens when the pedal stops, and...

AI Technical Summary

Problems solved by technology

[0005] When the currently used pedal speed sensor needs to judge the forward and reverse, it adopts the built-in forward and reverse double Hall integrated IC or uses the dual Hall plus single-chip microcomputer program to realize the forward and reverse judgment function, except for the high cost increase. In addition, the program security logic judgment of the microcontroller increases the complexity

Images