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Signal transmission system for center shaft torque detection device

A technology of a signal transmission system and a detection device, applied in the field of signal transmission systems, can solve the problems of poor use effect of power-assisted bicycles, increase signal transmission errors, and poor signal quality, so as to improve sensitivity and stability, improve signal strength, and ensure The effect of precision

Inactive Publication Date: 2018-10-02
AIKEMA ELECTRIC DRIVE SYST (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the central axis is always rotating when it is working, in the existing signal transmission system, the signal of the antenna will be unstable during the rotation process, and the signal quality will be poor due to the interference of other metal devices, which increases the signal transmission process. The error will make the final power assist error, which will eventually lead to poor use of power assist bicycles.

Method used

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  • Signal transmission system for center shaft torque detection device
  • Signal transmission system for center shaft torque detection device
  • Signal transmission system for center shaft torque detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 is basically as attached figure 1As shown: the central shaft 1 torque detection system includes a lock nut 2, a claw 3, a left headset 22, a right headset 4, a central shaft 1, a deformation bridge 6, a sleeve and a magnetic isolation sleeve 10.

[0045] Such as figure 1 As shown in and , the left end and the right end of the central axis 1 are respectively connected to the left crank of the left pedal and the right crank of the right pedal by fastening screws, the left crank is located on the left side of the left headset 22, and the right crank is located on the right headset 4 to the right. An external thread is formed on the outer surface of the central axis 1 at the position connected to the deformation bridge 6 . The deformable bridge 6 is sleeved on the central shaft 1, and the deformable bridge 6 and the central shaft 1 are connected by reverse threads, and the threaded part of the central shaft 1 is locked with the internal thread of the deformab...

Embodiment 2

[0099] Such as Image 6 As shown, the difference between this embodiment and Embodiment 1 is that the double Hall assembly and the bipolar linear Hall 26 are connected in the torque acquisition circuit, and the first micro-controller obtains the characteristic pedaling frequency and the centering frequency from the double Hall assembly. For the electrical signal of the rotation direction of the shaft 1, the first microcontroller obtains the electrical signal representing the crank rotation angle from the bipolar linear Hall 26, and transmits these electrical signals to the torque processing control circuit. At this time, the two circuits can be arranged together on the central axis 1 or separately, the torque acquisition circuit is arranged on the central axis 1 and the torque processing control circuit is arranged on the mounting sleeve 9 . When the torque acquisition circuit and the torque processing control circuit are set separately, the first transmitting module and the f...

Embodiment 3

[0101] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the double Hall assembly and the strain gauge 12 units are connected in the torque acquisition circuit, and the first micro-controller obtains the characteristic pedaling frequency and the rotation of the central shaft 1 from the double Hall assembly. As for the electrical signal of the direction, the bipolar linear Hall 26 is connected in the torque processing control circuit, and the second micro-controller obtains an electrical signal representing the rotation angle of the crank from the bipolar linear Hall 26. At this time, the two circuits can be arranged together on the central axis 1 or separately, the torque acquisition circuit is arranged on the central axis 1 and the torque processing control circuit is arranged on the mounting sleeve 9 . When the torque acquisition circuit and the torque processing control circuit are set separately, the first transmitting module and t...

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Abstract

The invention relates to the technical field of motor bicycle driving, and particularly discloses a signal transmission system for a center shaft torque detection device. The signal transmission system comprises a circuit board disposed on a center shaft, the circuit board is provided with a first antenna, and a second antenna opposite to the circuit board is disposed on the other side of the center shaft. A wire is connected between the first antenna and the second antenna, and the wire is wound around the center shaft to form a coil. The signal transmission system for the center shaft torquedetection device is capable of accurately transmitting signals.

Description

technical field [0001] The invention relates to the technical field of power-assisted bicycle driving, and in particular to a signal transmission system for a central axis torque detection device of a power-assisted bicycle. Background technique [0002] The central axis refers to the structure used to connect two pedals on the power-assisted bicycle and drive the claws and the chain on the claws to rotate. The central axis is the core component of the power-assisted bicycle, which is used to drive and control the normal driving of the whole vehicle. When the cyclist is riding, he needs to drive the central shaft to rotate by pedaling, and then drive the claws connected to the central shaft to rotate, the claws drive the chain to rotate, and the chain drives the tires to rotate. [0003] In order to detect the output power of the human-powered driving force applied to the power-assisted bicycle, it is necessary to detect the torque on the center shaft. After detection, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M6/50H01Q1/50H01Q1/24
Inventor 夏静满胡江勇李家成
Owner AIKEMA ELECTRIC DRIVE SYST (SUZHOU) CO LTD