To improve the cost, performance, and reliability of tire localization in TPMS applications to ensure the safe operation of vehicles.SOLUTION: Techniques are described for using one or more wireless host devices to perform tire localization of TPMS sensor data by determining received signal strength indicator (RSSI) signatures that are unique to the wireless communication channel between a host device and each TPMS sensor. RSSI signatures represent a periodic variation of the wireless communication channel between a host device on a vehicle body and a TPMS sensor in a rotating tire. Characteristics of the communication channel are a function of the wheel angle and are periodic with wheel rotations. The RSSI signatures may be created by matching RSSI measurements of packets received by the host device from a TPMS sensor with wheel angles derived from wheel speed sensor (WSS) data of an anti-lock braking system (ABS).SELECTED DRAWING: Figure 2
【課題】車両の安全な動作を保証するために、TPMS用途におけるタイヤ位置特定のコスト、性能および信頼性を改善する。【解決手段】1つまたは複数の無線ホストデバイスを使用して、ホストデバイスと各TPMSセンサとの間の無線通信チャネルに固有の受信信号強度インジケータ(RSSI)シグネチャを決定することによって、TPMSセンサデータのタイヤ位置特定を行う。RSSIシグネチャは、車体上のホストデバイスと回転タイヤ内のTPMSセンサとの間の無線通信チャネルの周期的変動を表す。通信チャネルの特性は車輪角度の関数であり、車輪の回転に伴って周期的である。RSSIシグネチャは、TPMSセンサからホストデバイスによって受信されたパケットのRSSI測定値を、アンチロックブレーキシステム(ABS)の車輪速度センサ(WSS)データから導出された車輪角度と照合することによって作成され得る。【選択図】図2
RECEIVED SIGNAL STRENGTH INDICATOR (RSSI) SIGNATURE FOR TIRE LOCALIZATION
タイヤ位置特定のための受信信号強度インジケータ(RSSI)シグネチャ
2024-03-01
Patent
Electronic Resource
Japanese
RECEIVED SIGNAL STRENGTH INDICATOR (RSSI) SIGNATURE FOR TIRE LOCALIZATION
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