2023 Fiscal Year Final Research Report
Safety development of regional railway using smart phone
| Project/Area Number |
20K04368
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 20010:Mechanics and mechatronics-related
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 鉄道 / 安全性 / 状態監視 / 軌道 / 踏切 / 状態基準保全 / スマートフォン |
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| Outline of Final Research Achievements |
The use of smartphones with built-in sensors and communication functions is considered to be effective in monitoring track conditions using in-service trains. In this study, we focused on the velocity due to the Doppler effect of the GPS carrier wave, converted this velocity information into distance travelled, and devised a signal processing method that can perform train position identification. In addition, smartphones were used to diagnose track conditions using acceleration and angular velocity. The development of a smartphone-based train approach warning system was tested on the Yamagata railway. The results of these tests show that it is possible to develop a practical track condition diagnosis and train approaching warning system using smartphones.
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| Free Research Field |
機械工学
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| Academic Significance and Societal Importance of the Research Achievements |
地方鉄道では，施設の経年劣化が著しい一方で，費用の確保や技術力の維持が難しく，十分な検査が行えない事業者も少なくない．このような問題を解決するためには，地方鉄道の営業車両の走行データを一括収集・管理し，軌道の状態を診断・予測するセンターが有効であると考えられる．これにより，多くの地方鉄道事業者における軌道保守に関する問題を解決できるものと考えられる．また，地方鉄道では，遮断機も警報器もない第４種踏切が多くあり，低コストで安全性を向上させるシステムの導入が必要である．本研究成果は，これらの問題を解決するために活用できる．
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