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LoRa IoT 기반의 교량 무선 자동계측 시스템 개발

Bridge Wireless Measurement System Development based on LoRa IoT

  • 투고 : 2019.11.26
  • 심사 : 2019.12.30
  • 발행 : 2019.12.01

초록

국내 SOC 공공시설물 중에 가장 많은 비율을 차지하는 교량시설물을 중심으로, 기존에 운영되고 있는 유선 계측시스템 또는 국내 통신사에서 자체 개발된 무선계측 시스템 대비 비용 절감이 가능하고, 기술적인 완성도를 높여 많은 교량에 적용될 수 있는 교량 무선 계측 시스템 개발하였다. 비면허 LPWAN 기술 중에 하나인 LoRa를 이용하여 국내 ISM 대역을 고려한 최적화된 MEMS기반 LoRa 스마트 센서노드와 기존 유선 센서도 LoRa 네트워크 통신이 가능한 LoRa DAQ 센서노드를 개발하였으며, 개발된 센서노드의 Test Bed 성능 검증과 효율적인 관리를 위해 어플리케이션 서버를 개발하였다.

Focusing on the bridge facilities, which occupy the largest proportion among SOC public facilities in Korea, it is possible to reduce the cost compared to existing wired measurement systems or wireless measurement systems developed by domestic telecommunications companies, and to increase the technical perfection to be applied to many bridges. We developed a wireless measurement system for bridges. Using LoRa, one of the unlicensed LPWAN technologies, we have developed an optimized MEMS-based LoRa smart sensor node considering the domestic ISM band and the existing wired sensor LoRa DAQ sensor node that can communicate with the LoRa network. Application server was developed for the test bed performance verification and efficient management of the developed sensor node.

키워드

참고문헌

  1. Ministry of Land, Infrastructure and Transport.(2017), Master Plan for Safety and Maintenance of the 4th Facility (2018-2022), 3-4
  2. Park, T.J., Lee, K.S., Jeong, W.C., Choi, B.C., Bang, H.C.(2017), LPWA-based IoT Dedicated Network Technology Trend, 2017 Electornics and Telecommunications Trends, 47
  3. SEMTECH.(2018), LoLa Technology:Flood Sensor Monitoring with Real-tiime Data, 1-4
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  5. Kim, J.T., Sim, S.H., Cho, S.J., Yun, C.B., Min, J.Y. (2016), RecentR&D activities on structural health monitoring in Korea 2016, Structural Monitoring and Maintenance, Vol. 3, No. 1 (2016), 94-98
  6. Ho, D.D., Lee, P.Y., Lee, S.Y., Kim, J.T., Vibration-based Structural Health Monitoring of Full-Scale Cable-Stayed Bridges Using Wireless Smart Sensors 2012, Korean Society of Hazard Mitigation, Vol. 12, No. 1 (2012), 77-80 https://doi.org/10.9798/KOSHAM.2012.12.4.077