公开(公告)号：US09333815B2

公开(公告)日：2016-05-10

申请号：US14253495

申请日：2014-04-15

Applicant: Schrader Electronics Limited

Inventor： Nicolas Henriet ,  Emmanuel Marguet ,  Ian Barrett

IPC: B60C23/00 ,  B60C23/04 ,  H04B1/04

CPC classification number: B60C23/0452 ,  B60C23/0455 ,  B60C23/0462 ,  B60C23/0471 ,  B60C23/0479 ,  H04B1/0458

Abstract: Methods, systems, and devices are provided for tire pressure detectors that may operate according to one of two or more selectable frequencies. Tire pressure detectors may include an RF section to modulate pressure information from a pressure sensor onto an output signal. The frequency of the output signal may be selectable from two or more frequencies based on a frequency required by a vehicle that the tire pressure detector is to be used with. An RF matching circuit may be coupled between the RF section and an antenna, with an impedance of the RF matching circuit selected based of the frequency of the output signal. Such impedance matching may provide a constant power level output from the tire pressure detector independent of the frequency of the tire pressure detector transmissions.

Abstract translation: 为轮胎压力检测器提供方法，系统和装置，其可以根据两个或多个可选择的频率之一进行操作。 轮胎压力检测器可以包括RF部分，以将来自压力传感器的压力信息调制到输出信号上。 输出信号的频率可以基于车辆要求使用的轮胎压力检测器所要求的频率从两个或更多个频率中选择。 RF匹配电路可以耦合在RF部分和天线之间，其中基于输出信号的频率选择RF匹配电路的阻抗。 这种阻抗匹配可以提供与轮胎压力检测器传输的频率无关的来自轮胎压力检测器的恒定功率电平输出。