Power-assisted bicycle having sensor with multiple magnet positions and magnetic fluxes unevenly distributed in shell
Power-assisted bicycle having sensor with multiple magnet positions and magnetic fluxes unevenly distributed in shell
- New search for: HUANG QIANG
- New search for: HUANG QIANG
A power-assisted bicycle having a sensor with multiple magnet positions and magnetic fluxes unevenly distributed in a shell includes a sensor which includes a sensing element, a power assistance model processor (21), a digital-to-analog converter (DAC, 27) and an operational amplifier (OPA, 28) which are connected successively. The sensing element includes a rotary wheel (1), a static wheel (40), permanent magnets (2) and a Hall component (3) which are embedded within a hollow internal of the rotary wheel and said static wheel. On the rotary wheel (1), magnetic poles of the neighboring permanent magnets (2) are opposite; the permanent magnets (2) are spaced differently and have different magnetic fluxes. The Hall component (3) on the static wheel (40) is provided in proximity to the permanent magnets. The sensor is sleeved onto a middle shaft (51); the OPA (28) is connected to a motor controller (29). Relative positions between the permanent magnets (2) and the Hall component (3) are fixed; the Hall component (3) obtains a rectangular wave signal, which facilitates outputting a manually manipulated power assistance model by the sensor via digitization, providing a reasonable origin, end and strength of power assistance and accomplishing an optimized man-machine match to save electricity.
Document information
Power-assisted bicycle having sensor with multiple magnet positions and magnetic fluxes unevenly distributed in shell
2015-07-23
Patent
Electronic Resource
English
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