Invention Grant
- Patent Title: Tire air pressure detecting device, tire air pressure monitoring system, and tire air pressure notification method
- Patent Title (中): 轮胎气压检测装置，轮胎气压监测系统和轮胎气压通知方法
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Application No.: US13266315Application Date: 2010-06-23
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Publication No.: US08823505B2Publication Date: 2014-09-02
- Inventor: Takahiro Maekawa , Tetsuro Hirohama , Takashi Shima
- Applicant: Takahiro Maekawa , Tetsuro Hirohama , Takashi Shima
- Applicant Address: JP Yokohama
- Assignee: Nissan Motor Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Global IP Counselors, LLP
- Priority: JP2009-162982 20090709
- International Application: PCT/IB2010/001512 WO 20100623
- International Announcement: WO2011/004229 WO 20110113
- Main IPC: B60C23/00
- IPC: B60C23/00 ; B60C23/02 ; B60C23/04
Abstract:
A tire air pressure detecting device includes an air pressure detecting unit, a transmitting unit, a running state detecting unit, an air pressure change rate detecting section and a frequency adjustment section. The frequency adjustment section is configured to adjust a transmitting frequency at which the detected value of the tire air pressure detected by the air pressure detecting unit is externally transmitted by the transmitting unit according to the running state detected by the running state detecting unit and the air pressure change rate detected by the air pressure change rate detecting section. The frequency adjustment section is further configured to variably set a threshold value for switching the transmitting frequency from low frequency to high frequency according to the running state and the air pressure change rate.
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