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2. 发明授权

US5422568A Speed sensor for use with vehicle road wheel and including connection line breakage detection 失效
标题翻译：用于车辆路面的速度传感器，包括连接线破损检测
公开(公告)号：US5422568A
公开(公告)日：1995-06-06
申请号：US62438
申请日：1993-05-13
申请人： Yoshikazu Hashizume , Tadayuki Kuze
发明人： Yoshikazu Hashizume , Tadayuki Kuze
IPC分类号： G01P3/42 , G01P3/487 , G01P3/44 , G08C25/00
CPC分类号： G01P3/487
摘要： A road wheel speed sensor for use with an automotive vehicle supported on road wheels. A pulsating variation in magnetic flux is produced with rotation of one of the road wheels. A signal converter is provided for converting the pulsation magnetic flux variation into a rectangular pulse signal to switching a transistor on and off. The signal converter is connected through power and signal lines to a processor. The transistor has a base electrode for receipt of the rectangular pulse signal, an emitter electrode, and a collector electrode connected to the signal line. A first resistor is connected between the power line and the signal line. A second resistor is connected between the power line and the emitter electrode of the transistor. A third resistor is connected between the signal line and the ground. The processor calculates a speed of rotation of the road wheel in response to a voltage developed across the third resistor.
摘要翻译：一种车轮速度传感器，用于与车轮上支撑的机动车辆一起使用。随着其中一个车轮的旋转产生磁通量的脉动变化。提供了一种信号转换器，用于将脉动磁通量变化转换为矩形脉冲信号以开启和关闭晶体管。信号转换器通过电源和信号线连接到处理器。晶体管具有用于接收矩形脉冲信号的基极，发射极和连接到信号线的集电极。第一个电阻连接在电源线和信号线之间。第二电阻器连接在电源线和晶体管的发射极之间。第三个电阻连接在信号线和地之间。处理器响应于在第三电阻器上产生的电压来计算车轮的旋转速度。

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