The IoT-based sensor network is one of the methods that can be efficiently applied to maintain the facilities, such as bridges, at a low cost. In this study, based on LoRa LPWAN, one of the IoT communications, sensor board for cable tension monitoring, data acquisition board for constructing sensor network along with existing measurement sensors, are developed to create bridge structural health monitoring system. In addition, we designed and manufactured a smart sensor node for LoRa communication and established a sensor network for monitoring. Further, we constructed a test bed at the Yeonggwang Bridge to verify the performance of the system. The test bed verification results suggested that the LoRa LPWAN-based sensor network can be applied as one of the technologies for monitoring the bridge structure soundness; this is excellent in terms of data rate, accuracy, and economy.

Abstract
1. 서 론
2. 본 론
    2.1 LoRa 기반 교량 모니터링 테스트베드 개요
    2.2 LoRa 교량 모니터링 시스템 단말단
    2.3 LoRa 게이트웨이 및 센서네트워크
    2.4 LoRa 네트워크 서버 및 모니터링 시스템
    2.5 영광대교 Test Bed 운영 결과
3. 결 론
References
요 지

• 박진오(동일기술공사 기술연구소) | Jin-Oh Park (Institute of Technology, Dong-Il Inc) Corresponding author
• 박상헌(동일기술공사 기술연구소) | Sang-Heon Park (Institute of Technology, Dong-Il Inc)
• 김경수(동일기술공사 기술연구소) | Kyung-Soo Kim (Institute of Technology, Dong-Il Inc)
• 박원주(한국시설안전공단 특수교관리센터) | Won-Joo Park (Long Span Bridge Management Center, KISTEC)
• 김종훈(한국시설안전공단 특수교관리센터) | Jong-Hoon Kim (Long Span Bridge Management Center, KISTEC)