Power-assisted bicycle with adjustable magnet block position sensor on flywheel
A technology for assisting bicycles and sensors, which is applied in the use of electric/magnetic devices to transmit sensing components, vehicle components, and rider drive directions, which can solve the problem that permanent magnet magnets cannot represent the pedal rotation position, the model for assisting demand is distorted, and there is no control. signal problems
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Embodiment 1
[0126] Embodiment 1. A power-assisted bicycle with an adjustable magnetic block position sensor on the flywheel
[0127] Such as figure 1 , 3 , 4, 6,
[0128] 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;
[0129] 2. The structure of the sensor and the connection relationship of the components are as follows:
[0130] 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;
[0131] [1] The sensing element is an element that converts the rotational motion of the flywheel 1 into a rectangular wave signal output;
[0132] The sensing element is t...
Embodiment 2
[0151] Embodiment 2, a power-assisted bicycle with an adjustable magnetic block position sensor on the high-density flywheel
[0152] 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
[0153] Embodiment 3, a power-assisted bicycle with an adjustable magnetic block position sensor on the flywheel with a specific circuit
[0154] 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;
[0155] [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;
[0156] [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 calculator 26 ....
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