PROBLEM TO BE SOLVED: To prevent fault detection of wheel positions even if each wheel speed sensor is unable to grasp in which direction a vehicle travels, a forward direction or a reverse direction.SOLUTION: If the number of edges (or the number of teeth) of a gear is incremented on the basis of detection signals of wheel speed sensors of first to third wheels when a vehicle is stopped, the data is not used as learning data. It is thereby possible to erroneously detect wheel positions on the basis of fault learning data. Therefore, a wheel position detector can prevent the fault detection of the wheel positions even if the wheel speed sensors are unable to grasp in which direction a vehicle travels, a forward direction or a reverse direction.SELECTED DRAWING: Figure 7
【課題】車輪速度センサにて車両の前進方向と後退方向のいずれに進んだか把握できない場合でも、車輪位置の誤検出が防げるようにする。【解決手段】停車時に1〜3輪の車輪速度センサの検出信号に基づいて歯車のエッジ数(もしくは歯数)がインクリメントされた場合、学習データとして使用しないようにする。これにより、誤った学習データに基づいて車輪位置を誤検出してしまうことを防止できる。したがって、車輪速度センサにて車両の前進方向と後退方向のいずれに進んだか把握できない場合でも、車輪位置の誤検出を防ぐことが可能な車輪位置検出装置とすることが可能となる。【選択図】図7
WHEEL POSITION DETECTOR AND TIRE PNEUMATIC PRESSURE DETECTOR WITH WHEEL POSITION DETECTOR
車輪位置検出装置およびそれを備えたタイヤ空気圧検出装置
2016-03-07
Patent
Electronic Resource
Japanese
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