PROBLEM TO BE SOLVED: To provide an abnormal state detection device of an automobile tire which can detect an abnormal state of a tire during travel, can achieve secure detection of tire abnormality, urging of recognition and safety confirmation to a driver and preventive safety, dispenses with a special sensor, and can be mounted to a vehicle without significant increase in cost.SOLUTION: An abnormal state detection device of an automobile tire includes a rotation sensor 2 which detects rotation of a wheel 1, a signal processing unit 3 which extracts variation of rotation speed synchronized with rotation from a rotation signal detected by the rotation sensor and extracts a rotation speed variation pattern synchronized with rotation over plural times of rotation from the variation of the rotation speed, and an abnormal state determination unit 4 which obtains the difference between the extracted rotation speed variation pattern and a rotation speed variation pattern set to be reference and outputs abnormal information by estimating an abnormal state of a tire from the difference.
【課題】 タイヤの異常状態を走行中に検出できてタイヤ異常の確実な検出、運転者への認知、安全確認の促し、予防安全が実現でき、かつ特殊なセンサを設ける必要がなくて、大幅にコストアップすることなく、車両に実装することができる自動車用タイヤの異常状態検出装置を提供する。【解決手段】 車輪1の回転を検出する回転センサ2と、この回転センサの検出した回転信号から回転に同期した回転速度の変動を抽出し、この回転速度の変動から複数回転に渡る回転に同期した回転速度変動パターンを抽出する信号処理ユニット3とを設ける。この抽出した回転速度変動パターンと設定された基準となる回転速度変動パターンとの差分を求め、その差分からタイヤの異常状態を推定し異常情報を出力する異常状態判断ユニット4を設ける。【選択図】 図1
ABNORMAL STATE DETECTION DEVICE OF AUTOMOBILE TIRE
自動車用タイヤの異常状態検出装置
2015-06-04
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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