发明名称 WHEEL SPEED DETECTING APPARATUS
摘要 PROBLEM TO BE SOLVED: To provide a wheel speed detecting apparatus capable of determining whether there is any failure in an output signal of a sensor regardless of acceleration or deceleration, even when a high-signal time and a low-signal time fluctuate steadily. SOLUTION: The wheel speed detecting apparatus includes a computing section computing a wheel rotating speed based on the output signal. The computing section contains a comparing section comparing a length of two high signals and/or a length of two low signals out of binarized output signals, and a failure decision section for determining the failure of the output signal based on comparison results by the comparing section. COPYRIGHT: (C)2011,JPO&INPIT
申请公布号 JP2011064578(A) 申请公布日期 2011.03.31
申请号 JP20090215624 申请日期 2009.09.17
申请人 HITACHI AUTOMOTIVE SYSTEMS LTD 发明人 FUNAI HIROKAZU
分类号 G01P3/42 主分类号 G01P3/42
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