To provide a tire air pressure detection system which can acquire air pressure information from a detection device even when the detection device is positioned at a Null point.SOLUTION: A tire air pressure detection system includes: a plurality of transmission devices which transmit a request signal that requires air pressure information of a tire of a vehicle; a detection device which detects an air pressure of the tire according to the request signal and transmits a response signal including air pressure information; and an acquisition device which receives the response signal and acquires the air pressure information. Where there is abnormality in which the one transmission device transmits the request signal to the detection device, and thus the response signal to the request signal of the one transmission device is not received by the acquisition device, the other transmission device transmits a high output request signal with a higher output level than the request signal of the one transmission device.SELECTED DRAWING: Figure 5
【課題】検出装置がNullポイントに位置する場合であっても、該検出装置から空気圧情報を取得できるタイヤ空気圧検出システムを提供する。【解決手段】車両のタイヤの空気圧情報を要求する要求信号を発信する複数の発信装置と、前記要求信号に応じてタイヤの空気圧を検出し、空気圧情報を含む応答信号を発信する検出装置と、前記応答信号を受信して前記空気圧情報を取得する取得装置とを含むタイヤ空気圧検出システムで、前記一の発信装置が前記検出装置に前記要求信号を発信し、斯かる一の発信装置の前記要求信号に対する応答信号が前記取得装置にて受信されない異常の場合、前記他の発信装置が前記一の発信装置の前記要求信号より高い出力レベルの高出力要求信号を発信する。【選択図】図5
TIRE AIR PRESSURE DETECTION SYSTEM
タイヤ空気圧検出システム
2018-12-20
Patent
Electronic Resource
Japanese
Tire pressure detection circuit, sensor, tire pressure monitoring system and automobile
European Patent Office | 2021
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