Moped provided with sensor with unevenly distributed positions of magnetic blocks on flywheel

Abstract

A moped provided with a sensor with unevenly distributed positions of magnetic blocks on a flywheel disclosed by the invention is an electric moped for providing a power signal by multi-point magnetic induction. The sensor comprises a sensing element, a power model processor, a digital-analogue converter and an operational amplifier which are orderly connected; a plurality of adjacent permanent magnet blocks of which the magnetic polarities are opposite are fixedly arranged on the flywheel as the sensing element; the distances between the permanent magnet blocks are different; a hall of the sensing element is arranged on a frame near the permanent magnet blocks; and the operational amplifier is connected with a motor controller. The moped has the advantages that the hall can obtain a rectangular wave signal, an artificially set power model can be conveniently output via digital treatment by the sensor, and a power starting point, a finishing point and force are reasonable, so that a person and a machine can be matched and the electricity is saved.

Description

technical field

[0001] The invention belongs to the technical field of power-assisted bicycles, in particular to an electric power-assisted bicycle that performs multi-point magnetic induction on a rotating part to provide power-assisted signals. Background technique

[0002] The Chinese patent 201020295192.0 "Claw Type Torque Sensing Device" applied by Yebao Vehicle Material Industry (Kunshan) Co., Ltd. discloses a sensing device for power-assisted bicycles. The sensing device includes a magnetic part and an elastic part to sense the torque. sensing device. After a long time of use, the change of the elastic coefficient of the elastic member will lead to changes in the sensing signal and the control effect of the controlled motor, and the power-assisted effect will not match the power-assisted needs of people. Moreover, the design structure of the elastic member is complex and the manufacturing cost is high.

[0003] The Chinese patent 01201843.0 "Automatic Detection Devi...

Examples

Embodiment 1

[0118] Embodiment 1. A power-assisted bicycle with a magnetic block position uneven distribution sensor on the flywheel

[0119] Such as figure 1 , 3 , 4, 6,

[0120] 1. The components and structure of the electric bicycle related to the installation of the sensor: including the electric bicycle and the sensor, the rear wheel of the electric bicycle has a flywheel 1, the electric bicycle has a frame 53, the battery 55 on the electric bicycle is connected to the motor controller 29, and the motor controller 29 connect the motor 30 on the wheel;

[0121] 2. The structure of the sensor and the connection relationship of the components are as follows:

[0122] The sensor includes a sensing element connected in sequence, a boost model processor 21, a digital-to-analog converter 27 and an operational amplifier 28;

[0123] [1] The sensing element is an element that converts the rotational motion of the flywheel 1 into a rectangular wave signal output;

[0124] The sensing elem...

Embodiment 2

[0142] Embodiment 2. A power-assisted bicycle with sensors for uneven distribution of magnetic block positions on a high-density flywheel

[0143] Such as figure 2 , 3, 4, 6, 40 permanent magnet blocks 2 with a diameter of 0.6 cm are arranged on one surface of a flywheel 1 with a diameter of 10.0 cm. The magnetic flux of the permanent magnet block 2 is 146---279 (B·H)max / KJ·m -3 A certain value, Hall 3 keeps a distance of 0.2 cm from each permanent magnet block 2 in the rotating state, so that when each rotating permanent magnet block 2 passes through Hall 3, Hall 3 can generate a corresponding Rectangular wave signal output. Other structures are the same as in Embodiment 1.

Embodiment 3

[0144] Embodiment 3, a power-assisted bicycle with a magnetic block position uneven distribution sensor on the flywheel with a specific circuit

[0145] Such as figure 1 , 3 , 5, 6, as in embodiment 1, the sensor includes a sensing element connected in sequence, a booster model processor 21, a digital-to-analog converter 27 and an operational amplifier 28;

[0146] [1] The Hall 3 in the sensing element is UGN3075; the structure of other elements and elements in the sensing element is the same as that in Embodiment 1;

[0147] [2] The auxiliary model processor 21 selects the single-chip microcomputer 31 to complete all functions, and the single-chip microcomputer 31 selects AT89S52. That is, the AT89S52 single-chip microcomputer 31 completes all functions of the analog-to-digital conversion and the wave width identifier 22 , the power-assisted starting point selector 23 , the magnet speed calculator 24 , the power-assisted model memory 25 and the power-assisted model calcula...

technical field

[0001] The invention belongs to the technical field of power-assisted bicycles, in particular to an electric power-assisted bicycle that performs multi-point magnetic induction on a rotating part to provide power-assisted signals. Background technique

[0002] The Chinese patent 201020295192.0 "Claw Type Torque Sensing Device" applied by Yebao Vehicle Material Industry (Kunshan) Co., Ltd. discloses a sensing device for power-assisted bicycles. The sensing device includes a magnetic part and an elastic part to sense the torque. sensing device. After a long time of use, the change of the elastic coefficient of the elastic member will lead to changes in the sensing signal and the control effect of the controlled motor, and the power-assisted effect will not match the power-assisted needs of people. Moreover, the design structure of the elastic member is complex and the manufacturing cost is high.

[0003] The Chinese patent 01201843.0 "Automatic Detection Devi...

Examples

Embodiment 1

[0118] Embodiment 1. A power-assisted bicycle with a magnetic block position uneven distribution sensor on the flywheel

[0119] Such as figure 1 , 3 , 4, 6,

[0120] 1. The components and structure of the electric bicycle related to the installation of the sensor: including the electric bicycle and the sensor, the rear wheel of the electric bicycle has a flywheel 1, the electric bicycle has a frame 53, the battery 55 on the electric bicycle is connected to the motor controller 29, and the motor controller 29 connect the motor 30 on the wheel;

[0121] 2. The structure of the sensor and the connection relationship of the components are as follows:

[0122] The sensor includes a sensing element connected in sequence, a boost model processor 21, a digital-to-analog converter 27 and an operational amplifier 28;

[0123] [1] The sensing element is an element that converts the rotational motion of the flywheel 1 into a rectangular wave signal output;

[0124] The sensing elem...

Embodiment 2

[0142] Embodiment 2. A power-assisted bicycle with sensors for uneven distribution of magnetic block positions on a high-density flywheel

[0143] Such as figure 2 , 3, 4, 6, 40 permanent magnet blocks 2 with a diameter of 0.6 cm are arranged on one surface of a flywheel 1 with a diameter of 10.0 cm. The magnetic flux of the permanent magnet block 2 is 146---279 (B·H)max / KJ·m -3 A certain value, Hall 3 keeps a distance of 0.2 cm from each permanent magnet block 2 in the rotating state, so that when each rotating permanent magnet block 2 passes through Hall 3, Hall 3 can generate a corresponding Rectangular wave signal output. Other structures are the same as in Embodiment 1.

Embodiment 3

[0144] Embodiment 3, a power-assisted bicycle with a magnetic block position uneven distribution sensor on the flywheel with a specific circuit

[0145] Such as figure 1 , 3 , 5, 6, as in embodiment 1, the sensor includes a sensing element connected in sequence, a booster model processor 21, a digital-to-analog converter 27 and an operational amplifier 28;

[0146] [1] The Hall 3 in the sensing element is UGN3075; the structure of other elements and elements in the sensing element is the same as that in Embodiment 1;

[0147] [2] The auxiliary model processor 21 selects the single-chip microcomputer 31 to complete all functions, and the single-chip microcomputer 31 selects AT89S52. That is, the AT89S52 single-chip microcomputer 31 completes all functions of the analog-to-digital conversion and the wave width identifier 22 , the power-assisted starting point selector 23 , the magnet speed calculator 24 , the power-assisted model memory 25 and the power-assisted model calcula...

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