Micro motion sensor
    1.
    发明授权
    Micro motion sensor 失效
    微动传感器

    公开(公告)号:US5903217A

    公开(公告)日:1999-05-11

    申请号:US954532

    申请日:1997-10-21

    摘要: A microwave motion sensor for detecting multiple levels of motion of a target is disclosed. The motion sensor includes a transceiver for broadcasting a signal into a predetermined area and receiving a reflected signal with a receiver for producing first and second directional signals. A signal conditioning circuit is provided for amplifying the first and second directional signals and digitizing the directional signals. The signal conditioning circuit includes a micro motion amplifier for separately amplifying one of the directional signals and producing a micro motion signal. A processor is provided for receiving the first and second directional signals transmitted by the signal conditioning circuit, and for receiving the micro motion signal. The processor includes a circuit for analyzing the directional signals, and a circuit for comparing the micro motion signal to a threshold. The processor is capable of adaptively switching between a first mode for detecting a threshold level of motion, a second mode for detecting a level of motion which is less than the threshold level of motion, and a third mode for detecting a level of motion which is greater than the threshold level of motion.

    摘要翻译: 公开了一种用于检测目标的多个运动水平的微波运动传感器。 运动传感器包括用于将信号广播到预定区域并且用用于产生第一和第二定向信号的接收器接收反射信号的收发器。 提供信号调理电路用于放大第一和第二定向信号并数字化定向信号。 信号调理电路包括用于分别放大方向信号之一并产生微动作信号的微运动放大器。 提供处理器用于接收由信号调节电路传输的第一和第二定向信号,并用于接收微动作信号。 处理器包括用于分析方向信号的电路,以及用于将微运动信号与阈值进行比较的电路。 处理器能够自适应地在用于检测阈值运动水平的第一模式之间切换,用于检测小于阈值运动水平的运动水平的第二模式,以及用于检测运动水平的第三模式 大于阈值运动水平。