BACKWARD PEDALING DETECTION CIRCUIT FOR E-BIKE MOTOR DRIVER,申请号US20070874425-传众专利搜索

BACKWARD PEDALING DETECTION CIRCUIT FOR E-BIKE MOTOR DRIVER

申请公布号：US2009102408(A1)

申请号：US20070874425

申请日期：2007.10.18

申请公布日期：2009.04.23

申请人：

MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;PANASONIC SEMICONDUCTOR ASIA PTE., LTD.

发明人：DE JESUS ALLAN CANDELARIA;LIU YUBIN;KANG TIEN YEW;TEO KIAN TECK

分类号：H02P3/06;B62M6/45;G01R29/027

主分类号：H02P3/06

摘要：A backward pedaling detection circuit has a charging/discharging circuit for charging and discharging the external capacitor to meet the threshold voltage required by the hysteresis comparator, based on the input from the hall sensor. An internal pull-down circuit, based on the pedal speed, keeps the circuit from false triggering. A comparator with hysteresis (Schmitt trigger) sets the upper and lower threshold voltage and eliminates the effect of noise. AND gates act like switches to allow the selected signal to pass through.