This paper analyzes the current status of railway contact network research at home and abroad, and proposes a system that can perform real-time online detection of railway contact network tension and early warning of disconnection accidents. The basic working principle of the system and the characteristics of ARM embedded microprocessor and magnetostrictive tension sensor are introduced, and the principle of disconnection alarm using GPRS SMS communication and the process of timed self-checking are analyzed. The power consumption of the system is analyzed, and finally the equipment list and devices are listed.
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