GOALI: Smart Wiring for In Situ Testing of Aging Wiring

美国国家运输安全委员会、联邦航空管理局、航空飞行员协会和海军空战司令部已将老化的飞机布线确定为当今航空面临的最重要的安全问题之一。尽管问题很严重，但检查布线以防止严重事故的技术仍然非常有限。这笔赠款是正在进行的开发“智能布线”系统的一部分，该系统用于对老化的飞机布线进行现场测试，有望极大地改善布线测试和维护，从而提高飞机的安全性。虽然目前的飞行前测试技术接近完成，但这笔赠款的目的是扩大可用于带电电线飞行测试的科学。这需要采用扩频通信技术将FDR信号覆盖在带电导线上，使用匹配的检测滤波器进行最佳信号检测，并使用盲源分离(信号处理)技术分析返回的信号以检测损坏的导线。“智能电线”的概念承诺在不久的将来，电缆和电线的建造、分析和测试方式将发生巨大变化。WIRE将不再是一个系统的“被动”部分，而是将积极参与自己的诊断和维护计划。测试和诊断电线故障的能力对几乎所有电子系统都至关重要，而且远远超出了飞机布线的范围。航天飞机、核反应堆、高速列车、关键数据和通信网络、挽救生命的医疗设备，甚至家庭汽车都将受益于现场电缆监控系统。

0115157FurseThe National Transportation Safety Board, the Federal Aviation Administration, the Aviation Pilots Association, and the Naval Air Warfare Command have identified aging aircraft wiring as one of the most significant safety issues facing aviation today. In spite of the severity of the problem, the technology to inspect the wiring to prevent serious accidents is still very limited. This grant is part of an ongoing effort to develop a "Smart Wiring" system for in situ testing of aging aircraft wiring that promises to dramatically improve wire testing and maintenance with resulting improvement in aircraft safety. While present technology is nearing completion for pre-flight testing, the purpose of this grant is to expand the science available for in-flight testing of live wires. This requires adapting spread spectrum communication techniques to overlay FDR signals on live wires, using matched detection filters for optimal signal detection, and use of blind source separation (signal processing) techniques to analyze the returned signals to detect damaged wires. The "Smart Wire" concept promises a dramatic change in how cable and wire are built, analyzed, and tested in the near future. Wire will no longer be a "passive" part of a system, but will actively participate in its own diagnosis and maintenance planning. The ability to test and diagnose wire failures is critical to virtually all electronic systems, and extends far beyond aircraft wiring. The space shuttle, nuclear reactors, high speed trains, critical data and communication networks, life saving medical equipment, and even the family car will benefit by an in situ cable monitoring system.