公开(公告)号：USD581299S1

公开(公告)日：2008-11-25

申请号：US29297143

申请日：2007-11-05

申请人： John Oeth ,  Richard Ragland ,  John Cunningham ,  Kip Leggett

设计人： John Oeth ,  Richard Ragland ,  John Cunningham ,  Kip Leggett

公开(公告)号：US06437702B1

公开(公告)日：2002-08-20

申请号：US09549818

申请日：2000-04-14

申请人： Richard Ragland ,  David Stillinger ,  Charles Pedersen

发明人： Richard Ragland ,  David Stillinger ,  Charles Pedersen

IPC分类号： G08B2100

CPC分类号： G01S15/88 ,  G01S7/003 ,  G01S15/04

摘要： A method and apparatus for determining whether cargo is present in a freight car. The freight car has a proximal (“rear”) end with a loading door and opposing, distal (“front”) end. One or more transmitters and receivers are mounted inside the freight car at the front end, toward the car's ceiling. The transmitters/receivers are operated by a controller, which also functions to analyze data from the transmitters/receivers and transmit related reports to a remote monitoring site. During a prescribed time period, a transmitter generates an ultrasonic signal pattern with a coverage area of prescribed radius that terminates before reaching the loading door. During the time period of transmission, or slightly later to account for signal reflection time, the controller operates the receiver to detect reflected signals originating from the transmitter. Then, the controller transmits a report of whether cargo is present in the freight car, based on whether any reflected signals were received.

摘要翻译： 用于确定货物是否存在于货车中的方法和装置。 货车有一个近端（“后”）端，带有一个装货门和相对的，远端（“前”）端。 一个或多个发射器和接收器安装在前端的货车内，朝向汽车的天花板。 发射机/接收机由控制器操作，控制器还用于分析来自发射机/接收机的数据，并将相关报告发送到远程监控站点。 在规定的时间段内，发射​​机产生具有预定半径的覆盖区域的超声信号图案，其在到达装载门之前终止。 在传输的时间段期间，或稍后再考虑信号反射时间，控制器操作接收机以检测从发射机发出的反射信号。 然后，控制器根据是否收到反射信号，传送货物是否存在于货车中的报告。