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Feasibility of Locomotive-Mounted Broken Rail Detection. High Speed Rail IDEA Project 38.
| 题名： | Feasibility of Locomotive-Mounted Broken Rail Detection. High Speed Rail IDEA Project 38. |
| 作者： | turner, s. |
| 关键词： | rails,broken rail detection |
| 摘要： | This research examined the feasibility of applying Time Domain Reflectometry to the task of broken rail detection. The key innovation is to regard the track as a two-wire electrical transmission line, and then apply the same electrical pulse/echo technique that is commonly used to locate breaks and shorts in electrical cables. The aim of the proposed locomotive-mounted system is to allow each train to independently test the track ahead for broken rails and track occupation, up to a given detection range. This approach is designed to work in conjunction with Communication-Based Train Control to replace the present wayside signalizing system and eliminate the associated per-mile maintenance costs. A theoretical framework for the proposed test system was developed to explore the likely benefits and problems, and a MATCHCAD signal path model was developed to estimate the detection range. Anticipated problems that were considered included rack-shunting structures such as turnouts; interoperability with the existing track circuits; RF safety and licensing issues; and the complex mechanical and electrical requirements for coupling signals between the train and the track. / NOTE:Final rept. Sep 02-Oct 03. |
| 报告类型： | 科技报告 |
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