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    • 1. 发明授权
    • Ultrasonic tracking and locating system
    • 超声跟踪和定位系统
    • US3696384A
    • 1972-10-03
    • US3696384D
    • 1971-07-08
    • RECOGNITION DEVICES
    • LESTER ROBERT W
    • G01S15/66G01S15/74G06Q10/08H04B11/00G01S3/80G08B5/00
    • G06Q10/08G01S15/66G01S15/74H04B11/00Y10S367/91
    • An ultrasonic tracking and locating system in which an identification code number is programmed on a console keyboard to activate an encoder which transmits a plurality of coded pulses to a plurality of transceiver units located in the rooms of a building where surveillance is desired. A transducer in the transceiver transmits a coded, ultrasonic digital signal which is dispersed throughout the room. Portable pocket unit transceivers carried by persons to be located receive the transmitted ultrasonic signals and decode the signals to determine if they correspond to the pocket unit''s identification code. If the signal corresponds to the pre-programmed code, the pocket unit transmits a single ultrasonic pulse which is received by the room transceiver and is transmitted back to the console, where a display converter activates a digital readout display to provide a visual, numerical indication of the location of the person.
    • 一种超声波跟踪和定位系统,其中在控制台键盘上编程识别码号,以激活向位于需要监视的建筑物的房间中的多个收发器单元发送多个编码脉冲的编码器。 收发器中的换能器传输分散在整个房间的编码的超声波数字信号。 由位于所在位置的人携带的便携式袋单元收发器接收所发送的超声波信号并解码信号以确定它们是否对应于口袋单元的识别码。 如果信号对应于预编程代码,则袖珍单元发送由房间收发器接收的单个超声波脉冲并被发送回控制台,其中显示转换器激活数字读出显示器以提供视觉的数字指示 的人的位置。