The invention provides a protective unattended system capable of sensing railway field operation on the basis of a thin-core optical fiber, which is applicable to the field of railway construction, optical fiber sensing and the like. The system comprises a measuring module and a receiving module, wherein an output end of a laser source (1) of the measuring module is connected with an input end of a phase modulator (2); an output end of the phase modulator (2) is connected with an input end of the thin-core optical fiber (3); a vibration signal is applied to the thin-core optical fiber; an output end of the thin-core optical fiber (3) is connected with an input end of a photoelectric detector (4); an output end of the photoelectric detector (4) is connected with an input end of a signal processing module (5); an output end of the signal processing module (5) is connected with an input end of a wireless transmitting module (6). An output end of a wireless receiving module (7) of the receiving module is connected with an input end of a signal processing module (8); and an output end of the signal processing module (8) is connected with a displaying module (9) and a loudspeaker (10). The protective unattended system capable of sensing the railway field operation on the basis of the thin-core optical fiber, provided by the invention, has the advantages of low energy dependence, anti-electromagnetic interference property, corrosion resistance and the like because the position of a vehicle can be accurately positioned through the adoption of a thin-core optical fiber sensing technology. A phenomenon that protection workers cannot inform construction personnel on the site to avoid accidents in time on lines in mountain areas and curve sections with poor observation conditions can be avoided.
Protective unattended system capable of sensing railway field operation on the basis of thin-core optical fiber
2015-10-07
Patent
Elektronische Ressource
Englisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
Unattended system for sensing railway field operation and protection based on photonic crystal fiber
Europäisches Patentamt | 2015
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Kraftfahrwesen | 1974
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