전력설비 유지보수 차량을 위한 지능형 안전 모듈의 게이트웨이 및 통신 시스템 설계에 관한 연구 = A Study on the Design of Gateway and Communication System for Intelligent Safety Module in Power Facility Maintenance Vehicles

다국어 초록 (Multilingual Abstract)

This study proposes a multi-interface gateway and a dual backhaul communication architecture to enhance real-time safety monitoring and communication reliability of power maintenance vehicles. The proposed gateway integrates LTE, UWB, CAN, GPS, and Wi-Fi/BLE interfaces to collect in-vehicle data and transmits them securely to the control center using MQTT-based telemetry and VPN encryption. Moreover, a failover mechanism from LTE to TV White Space (TVWS) is applied to maintain communication continuity under LTE degradation or outage. A prototype gateway board was implemented and validated through functional and performance evaluations. Experimental results confirmed that key performance metrics—latency, throughput, packet delivery, and VPN session continuity—meet operational requirements, demonstrating stable data transmission even during LTE-to-TVWS switchover. This work provides a practical foundation for deploying intelligent safety and monitoring systems for power maintenance vehicles. Future work includes field-level validation in real operation environments and performance improvement for long-term stability.