Disclosed are an indirect tire pressure monitoring apparatus and a method thereof. According to an embodiment of the present invention, the indirect tire pressure monitoring apparatus comprises: a first wheel speed sensor which detects a first wheel speed of a first wheel of a vehicle; a second wheel speed sensor which detects a second wheel speed of a second wheel of the vehicle; and an electronic control unit which calculates a first resonant frequency difference between a first reference resonant frequency, which is estimated by using a first wheel speed signal detected from the first wheel speed sensor in a learning section, and a first resonant frequency, which is estimated by using the first wheel speed signal detected from the first wheel speed sensor in a detection section, and calculates a second resonant frequency difference between a second reference resonant frequency, which is estimated by using a second wheel speed signal detected from the second wheel speed sensor in the learning section, and a second resonant frequency, which is estimated by using the second wheel speed signal detected from the second wheel speed sensor, thereby determining a probability for each tire pressure-reducing model in accordance with the first resonant frequency difference and the second resonant frequency difference, which are calculated above, and determining the pressure-reducing status of the tire based on the determined probability for each tire pressure-reducing model. The present invention aims to provide an indirect tire pressure monitoring apparatus and method thereof, which are able to more accurately and reliably determine the pressure-reducing status.
간접식 타이어 압력 모니터링 장치 및 방법이 개시된다. 본 발명의 일실시예에 따른 간접식 타이어 압력 모니터링 장치는 차량의 제1 바퀴의 제1 휠 속도를 검출하는 제1 휠 속도센서와, 차량의 제2 바퀴의 제2 휠 속도를 검출하는 제2 휠 속도센서 및 학습 구간에서 제1 휠 속도센서로부터 검출된 제1 휠 속도신호를 이용하여 추정된 제1 기준 공진주파수와, 감지 구간에서 제1 휠 속도센서로부터 검출된 제1 휠 속도신호를 이용하여 추정된 제1 공진주파수 사이의 제1 공진주파수 차이를 산출하고, 학습 구간에서 제2 휠 속도센서로부터 검출된 제2 휠 속도신호를 이용하여 추정된 제2 기준 공진주파수와, 감지 구간에서 제2 휠 속도센서로부터 검출된 제2 휠 속도신호를 이용하여 추정된 제2 공진주파수 사이의 제2 공진주파수 차이를 산출하고, 산출된 제1 공진주파수 차이 및 제2 공진주파수 차이에 따라 타이어 감압모델별 확률을 결정하고, 결정된 타이어 감압모델별 확률을 근거로 타이어의 감압상태를 판단하는 전자제어유닛을 포함한다.
INDIRECT TIRE PRESSURE MONITORING APPARTUS AND CONTROL METHOD THEREOF
간접식 타이어 압력 모니터링 장치 및 방법
03.05.2021
Patent
Elektronische Ressource
Koreanisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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