| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
In this study, a simple fault detection system of railway track independent of GPS is developed, which works for early detection of the track abnormality from vibration responses of the commercial trains by using smart phones progressed rapidly in recent years. It is aimed to propose an inexpensive portable constantly monitoring system in track management for 120 medium-sized railway companies in Japan.
First, a method of train localization through the mutual correction of acceleration and interior sound is proposed and implemented with smart phones. Then, by improving the train-track interaction analysis techniques the vibration response is obtained to identify the cause of the specific irregularity in a particular track structure. In addition, the observability analysis helps to propose a practical onboard measurement scheme including the required measured parameters and sensor arrangement. Only the smart phones can realize a simple onboard fault detection system of train tracks.
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