To provide a tire wear sensor capable of detecting a tire abrasion state more accurately.SOLUTION: A control part 13 of a tire side device 1 is provided with at least either a level acquisition part 13g or a level arithmetic part 13e in addition to a state detection part 13b detecting whether a road surface state is a wet road surface or otherwise. The level acquisition part 13g acquires peak level value to be peak at the vibration level when stepping-on to be the moment a device arrangement part is in contact with the road surface from vibration waveforms of a tire 3 shown by the detection signal when the wet road surface is detected with a part corresponding to the arrangement part of the tire side device 1 of the tire 3 as the device arrangement part. The level calculation part 13e calculates level value at the vibration level of a post-kicking region after the device arrangement part leaves the road surface. In the control part 13, data showing at least either the peak level value when stepping-on or the level value of the post-kicking region is generated as wear data.SELECTED DRAWING: Figure 2
【課題】より精度良くタイヤ摩耗状態を検知できるタイヤ摩耗検知装置を提供する。【解決手段】タイヤ側装置1の制御部13に、路面状態がウェット路面であるかウェット路面以外であるかを検知する状態検知部13bに加えて、レベル取得部13gとレベル演算部13eとの少なくとも一方を備える。レベル取得部13gは、タイヤ3のうちのタイヤ側装置1の配置箇所と対応する部分を装置配置箇所として、ウェット路面が検知された際に、検出信号が示すタイヤ3の振動波形から、装置配置箇所が路面に接地した瞬間となる踏み込み時の振動レベルのピークであるピークレベル値を取得する。レベル演算部13eは、装置配置箇所が路面から離れた後となる蹴り出し後領域の振動レベルのレベル値を演算する。そして、制御部13にて、踏み込み時のピークレベル値と蹴り出し後領域のレベル値の少なくとも一方を示すデータを摩耗データとして生成する。【選択図】図2
TIRE WEAR SENSOR
タイヤ摩耗検知装置
2020-06-18
Patent
Electronic Resource
Japanese
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