发明申请
- 专利标题: TIRE INFLATION PRESSURE MONITORING APPARATUS
- 专利标题(中): 轮胎充气压力监测装置
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申请号: US12676669申请日: 2009-04-24
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公开(公告)号: US20110148617A1公开(公告)日: 2011-06-23
- 发明人: Hideki Kusunoki , Hideki Ohashi
- 申请人: Hideki Kusunoki , Hideki Ohashi
- 申请人地址: JP Toyota-shi
- 专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JP Toyota-shi
- 国际申请: PCT/JP09/01904 WO 20090424
- 主分类号: B60C23/02
- IPC分类号: B60C23/02
摘要:
An inflation pressure sensor is mounted in a wheel of a vehicle and determines a tire inflation pressure. A wheel-side communication device transmits a detected tire inflation pressure to a body-side communication device at a predetermined interval. An inflation pressure storing unit stores, as an after-travel inflation pressure, a tire inflation pressure after start of travel of the vehicle. A comparing unit compares the after-travel inflation pressure with a lowest reference pressure. The lowest reference pressure is a tire inflation pressure immediately after start of the vehicle or a predetermined recommended inflation pressure. A reference pressure setting unit sets the after-travel inflation pressure as a reference pressure of tire inflation pressure determination when the after-travel inflation pressure is higher than the lowest reference pressure, and sets the lowest reference pressure as a reference pressure of tire inflation pressure determination when the after-travel inflation pressure is equal to or lower than the lowest reference pressure. When the tire inflation pressure becomes below an alarm pressure threshold obtained from the reference pressure, an alarm unit generates an alarm.
公开/授权文献
- US08466782B2 Tire inflation pressure monitoring apparatus 公开/授权日:2013-06-18