公开(公告)号：US3895347A

公开(公告)日：1975-07-15

申请号：US49190274

申请日：1974-07-25

Applicant: BRIDGESTONE TIRE CO LTD

Inventor： TAKUSAGAWA TAKASHI ,  FUJIKAWA AKIRA ,  MATSUDA AKIRA ,  MATSUURA GEORGE ,  NAKANISHI KENZO ,  TOGAWA HIDEO ,  HANASAKA YASUAKI

IPC: B60C23/04 ,  G01L11/00 ,  G01L17/00 ,  B60C23/02

CPC classification number: B60C23/0428 ,  G01L11/00 ,  G01L17/00

Abstract: A system for transmitting information of reduced pneumatic pressure of tires comprising an electromagnetic wave radiation mechanism of an electric field excitation system and at least one receiver antenna of an electromagnetic field sensing type for sensing a polarized wave of an electromagnetic field radiated from the radiation mechanism. The radiation mechanism includes an electromagnetic wave radiation member consisting of a substantially concentric metal body opposedly and substantially provided on each axle of a plurality of tire wheels for actuating as an electric dipole together with the wheels and an oscillator electrically coupled to the radiation member and energized by a switch actuated in response to reduced pneumatic pressure of tire. The receiver antenna is provided in the space between the ground surface and the lower surface of the bottom plate of the car body in order to screen external noise waves.

Abstract translation: 一种用于发送包括电场激励系统的电磁波辐射机构和电磁场感测型的至少一个接收天线的轮胎的减小气动压力的信息的系统，用于感测从辐射机构辐射的电磁场的偏振波。 辐射机构包括电磁波辐射构件，该电磁波辐射构件由基本上同心的金属体组成，其基本上设置在多个轮胎车轮的每个轴上，用于与车轮一起作为电偶极子致动，并且振荡器电耦合到辐射构件并通电 通过响应于轮胎的气动压力降低而致动的开关。 接收器天线设置在车身底板的地面和下表面之间的空间中，以屏蔽外部噪声波。