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1. 发明申请

US20080047350A1 USE OF ULTRASOUND FOR MONITORING SECURITY OF SHIPPING CONTAINERS 审中-公开
标题翻译：使用超声波监测运输集装箱的安全
公开(公告)号：US20080047350A1
公开(公告)日：2008-02-28
申请号：US11841198
申请日：2007-08-20
申请人： Les Atlas , Jonathan Cutter , Patrick McVittie
发明人： Les Atlas , Jonathan Cutter , Patrick McVittie
IPC分类号： G01N29/04
CPC分类号： G01S15/08 , G08B13/1618
摘要： Ultrasound is used to detect either or both the opening of a door of a shipping container or a change in the contents of a shipping container. Ultrasound signals transmitted from one or more ultrasonic transducers configured to be mounted within an interior of a shipping container travel through the interior and are reflected by a reflector, e.g., a corner reflector. The reflected ultrasound is received by an ultrasonic receiver, which produces an output signal corresponding to the received ultrasound signal. If the ultrasonic transducer or the reflector is mounted on the door, the time of flight of the ultrasound signal can be used to determine the distance that the ultrasound signal travels. Opening the door changes this distance, which can be detected. Similarly, changes in ultrasound reflected from contents in the shipping container can be detected and used to detect changes in the contents, which may be caused by terrorist activity.
摘要翻译：超声波用于检测运输集装箱的门的打开或运输集装箱的内容的变化。从配置成安装在运输容器的内部的一个或多个超声波换能器传输的超声波信号行进穿过内部，并被反射器（例如角部反射器）反射。反射超声波由超声波接收器接收，其产生对应于接收的超声信号的输出信号。如果超声波换能器或反射器安装在门上，超声信号的飞行时间可用于确定超声信号行进的距离。打开门改变这个距离，这可以被检测到。类似地，可以检测出反映在运输集装箱中的内容的超声波变化，并用于检测可能由恐怖活动引起的内容的变化。

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