A Pressurized Tank Car Inspection System for Railroad Transportation Security

2007 IEEE Conference on Technologies for Homeland Security Pub Date : 2007-05-16 DOI:10.1109/THS.2007.370013

P. Womble, J. Spadaro, M. Harrison, A. Barzilov, D. Harper, B. Lemoff, R. Martin, I. Novikov, J. Paschal, L. Hopper, C. Davenport, J. Lodmell

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Abstract

Pressurized rail tank cars transport large volumes of volatile liquids and gases throughout the country, much of which is hazardous and/or flammable. Our group is developing a trackside inspection system for these tank cars. It consists of five narrow frequency band pressure sensors with center frequencies of 40 and 75 kHz, a broad band microphone for sound normalization and three video cameras. In addition, a 5 cm times 5 cm NaI(Tl) radiation detector provides radiological data on the passing trains every 60 seconds. During operation, an audio frequency spectrum is associated with each frame of the video camera as the train passes by the system at normal speeds, and the spectra are inspected for high frequency sounds associated with leaks. A 10 m tall tower houses the system positioned approximately 10 m from the center of a rail line and siding located in Bowling Green, KY (USA). The system is controlled by a website and server located at the tower and the Internet connection utilizes WiFi (802.11 g) radios.

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用于铁路运输安全的增压罐车检测系统

加压铁路罐车在全国各地运输大量挥发性液体和气体，其中大部分是危险和/或易燃的。我们小组正在为这些油罐车开发一种轨旁检查系统。它由5个中心频率为40和75千赫的窄频带压力传感器、一个用于声音标准化的宽带麦克风和3个摄像机组成。此外，一个5厘米乘以5厘米的NaI(Tl)辐射探测器每60秒提供一次经过列车的辐射数据。在运行过程中，当列车以正常速度通过系统时，音频频谱与摄像机的每一帧相关联，并检查与泄漏相关的高频声音。位于美国肯塔基州鲍灵格林的一个10米高的塔楼容纳了该系统，该系统位于距离铁路线和侧线中心约10米的地方。该系统由位于发射塔的网站和服务器控制，互联网连接使用WiFi (802.11 g)无线电。

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2007 IEEE Conference on Technologies for Homeland Security

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