PROBLEM TO BE SOLVED: To provide a technology capable of improving the accuracy of specifying the attaching position of each wheel even when a difference in rotational speed between a front wheel and a rear wheel is limited.SOLUTION: In a vehicle that can be four-wheel driven, processing for obtaining the rotational position of a wheel detected for each reception of at least identification information of the identification information unique to a wheel and the air pressure of the wheel to store it as the rotational position data of each wheel is performed for each identification information, and when it is determined that for all pieces of identification information, a first temporary attaching position as the attaching position of a wheel in which rotational position data smallest in variation among the stored rotational position data and a second temporary attaching position as the attaching position of a wheel in which rotational position data second smallest in variation are identical in a car width direction and different in a vehicle longitudinal direction, and there is no overlapping between the first temporary attaching positions for each identification information, each first temporary attaching position is determined to be attaching position of a wheel to which each identification information corresponds.SELECTED DRAWING: Figure 17

    【課題】前輪と後輪の回転数差が少ない場合であっても、各車輪の取り付け位置を特定する精度を向上可能な技術を提供する。【解決手段】四輪駆動可能な車両に、車輪に固有の識別情報及び車輪の空気圧のうち少なくとも識別情報を受信する毎に検出した車輪の回転位置を取得して各車輪の回転位置データとして蓄積する処理を識別情報毎に行い、全ての識別情報に対し、蓄積した回転位置データのうち最もばらつき度合いが小さい回転位置データを検出した車輪の取り付け位置である第一仮取り付け位置と、二番目にばらつき度合いが小さい回転位置データを検出した車輪の取り付け位置である第二仮取り付け位置が、車幅方向で同じ位置にあるとともに車両前後方向で異なる位置であり、且つ識別情報毎に第一仮取り付け位置に重複が無いと判定すると、各第一仮取り付け位置を各識別情報が対応する車輪の取り付け位置と判定する。【選択図】図17


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    Title :

    TIRE PRESSURE MONITORING DEVICE, VEHICLE INCLUDING THE TIRE PRESSURE MONITORING DEVICE, AND TIRE PRESSURE MONITORING METHOD


    Additional title:

    タイヤ空気圧モニター装置、タイヤ空気圧モニター装置を備える車両、タイヤ空気圧モニター方法


    Contributors:

    Publication date :

    2016-05-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen