转盘的输入轴和被测旋转轴相连， 被测物体旋转时，转盘随之转动

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div.Section0{page:Section0;} 以下是引用片段： 所示。转盘的输入轴和被测旋转轴相连， 被测物体旋转时，转盘随之转动。当转盘上的小磁铁经过霍尔集成传感器时， 霍尔集成传感辅就输出一个脉冲信号。转盘不停地转动，霍尔集成传感器便输出表示转速的连续脉冲信号.该信号经非门F输出端接来自时基电路555 送来的<span style="FONT-FAMILY: '宋体'; FONT-SIZE: 10.5pt; FONT-SIZE: 10.5pt;