To provide a tire type determination device which enables assurance of a determination accuracy as to whether a tire is a running wheel or a spare wheel.SOLUTION: A tire air pressure sensor 4 transmits acceleration data Dg which is detected by an acceleration detection part 10, to a TPMS receiver 15 in an analogue value when sending an electric wave Sva at a peak position in a tire rotation direction. A wheel type determination part 24 determines a difference between acceleration data in the electric wave Sva at the time of past reception and acceleration data in the electric wave Sva at the time of up-to-date reception, and from this difference, determines whether each tire 2 (each air pressure sensor ID) is a running wheel or a spare wheel.SELECTED DRAWING: Figure 1
【課題】タイヤが走行輪又はスペア輪のいずれであるかの判定精度の確保を可能にしたタイヤ種類判定装置を提供する。【解決手段】タイヤ空気圧センサ4は、タイヤ回転方向のピーク位置で電波Svaを送信する際、加速度検出部10で検出した加速度データDgをアナログ値でTPMS受信機15に送信する。輪種判定部24は、過去受信時の電波Sva内の加速度データと最新受信時の電波Sva内の加速度データとの差分を求め、この差分から、各タイヤ2(各空気圧センサID)が走行輪又はスペア輪のいずれであるのかを判定する。【選択図】図1
TIRE TYPE DETERMINATION DEVICE
タイヤ種類判定装置
2019-03-22
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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