公开(公告)号：US20090072957A1

公开(公告)日：2009-03-19

申请号：US12105980

申请日：2008-04-18

申请人： XiaoDong Wu ,  David C. Vacanti ,  Qua Van Le

发明人： XiaoDong Wu ,  David C. Vacanti ,  Qua Van Le

IPC分类号： B60Q1/00

CPC分类号： G01S13/584 ,  B60Q9/004 ,  G01S13/348 ,  G01S2013/9332

摘要： A proximity sensor may be used as part of a vehicle blind spot detection system. The sensor is configured to transmit multiple radio frequency (RF) signals of different frequencies, receive reflected RF signals, and supply intermediate frequency (IF) signals. Each IF signal is representative of one of the reflected RF signals, and each reflected RF signal corresponds to a transmitted RF signal that was reflected by an object within the sensor detection region. The sensor uses the IF signals to determine whether an object is within its detection region and its movement direction.

摘要翻译： 接近传感器可以用作车辆盲点检测系统的一部分。 传感器被配置为传输不同频率的多个射频（RF）信号，接收反射的RF信号和提供中频（IF）信号。 每个IF信号代表反射RF信号中的一个，并且每个反射的RF信号对应于由传感器检测区域内的对象反射的发射的RF信号。 传感器使用IF信号来确定物体是否在其检测区域内及其移动方向。