Directionally-adjustable antenna system using an outside mirror for automotive applications
    10.
    发明授权
    Directionally-adjustable antenna system using an outside mirror for automotive applications 有权
    定向可调式天线系统,使用汽车应用的外部镜

    公开(公告)号:US06861942B1

    公开(公告)日:2005-03-01

    申请号:US09359144

    申请日:1999-07-21

    IPC分类号: H01Q1/32 H01Q21/28 H03K17/00

    摘要: A vehicle antenna system incorporated into at least one side-view mirror of a vehicle includes a forward directed antenna and a rearward directed antenna to transmit and receive signals over corresponding forward and rearward-directed detection fields, respectively. The antennas act as directional transmitters and/or receivers, and a processing circuit discriminates between signals from different antennas without requiring any of the antennas to transmit identification signals to the processing circuit. Signal discrimination is conducted in part by sequentially selecting each antenna to obtain a corresponding antenna signal and, if required for a particular application, comparing the obtained signal with previously obtained antenna signals. The vehicle antenna system can be used, for example, in conjunction with tire pressure sensors to detect low tire pressure in a particular tire.

    摘要翻译: 并入车辆的至少一个侧视镜的车载天线系统包括前向天线和向后定向天线,用于分别在相应的前向和后向检测场上发送和接收信号。 天线作为定向发射机和/或接收机,并且处理电路鉴别来自不同天线的信号,而不需要任何天线将识别信号发送到处理电路。 部分地通过顺序选择每个天线以获得对应的天线信号进行信号鉴别,并且如果特定应用需要,将获得的信号与先前获得的天线信号进行比较。 车辆天线系统可以例如与轮胎压力传感器结合使用,以检测特定轮胎中的低轮胎压力。