A power-assistance bicycle using a sensor having multiple magnet blocks evenly distributed in housing, related to electric power-assistance bicycles that provide a power-assistance signal with multipoint magnetic induction. The sensor comprises: a sensing element, a power assistance model processor (21), a digital-to-analog converter (27) and an operational amplifier (28). The sensing element comprises a rotating disk (1) and an annular-groove fixing disk (40) fitted with each other, and multiple permanent magnetic blocks (2) and the Hall element (3) are provided in a cavity of the rotating disk (1) and the annular-groove fixing disk (40). A plurality of permanent magnetic blocks (2) that are opposite in adjacent magnetic polarities are fixedly provided on the rotating disk (1). The Hall element (3) is provided on the fixing disk (40) and in proximity to the permanent magnetic blocks (2). The sensor is sleeved on an exterior of a medial shaft (51). The operational amplifier (28) is connected with the motor controller (29). Due to the relatively fixed positions of the permanent magnetic block (2) and the Hall element (3), the Hall element is capable of obtaining rectangular waves signals, so as to facilitate the sensor to output an adjustable and artificial setting power-assistance model having satisfying assistance power in the beginning and end via digital processing, thus allowing for optimal man-machine matching and for power conservation.
Power assistance bicycle using sensor having multiple magnet blocks evenly distributed in housing
2015-07-23
Patent
Elektronische Ressource
Englisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / H03M Codieren, Decodieren oder Codeumsetzung allgemein , CODING, DECODING OR CODE CONVERSION, IN GENERAL |
Power assistance bicycle using sensor having multiple magnet blocks evenly distributed in housing
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