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Design and Implementation of LoRa-based Emergency Exit Guide System

LoRa 기반 피난 유도 체계의 설계 및 구현

  • Shin, Jaejun (Department of Information and Communication, Hannam University) ;
  • Eun, Seongbae (Department of Information and Communication, Hannam University) ;
  • So, Sun-Sup (Department of Computer Science, Kongju National University) ;
  • Kim, Byungho (Department of Computer Science, Kyungsung University)
  • Received : 2018.01.08
  • Accepted : 2018.04.02
  • Published : 2018.04.30

Abstract

This paper proposes and implements a LoRa-based emergency exit guide system which can direct the optimal refuge path accounting for the real state of the fires. Each 4-way emergency exit guide sign presents a right direction through one of four LED signs toward the possible exit dynamically calculated by the shortest path algorithm. We constructed a simulation environment with 8 spots of the emergency exit guide signs and 2 exits, which can simulate variant cases of fire accidents, and showed that the proposed algorithm can presents the right guidance for each emergency exit guide sign. We also evaluated the performances of LoRa-based wireless communications using a self developed communication module in the various indoor and outdoor environments. The proposed system can be applied to small and medium sized buildings as well as larger ones in terms of cost efficiency, in which there's no needs to invest for the complex equipments except only sensors and emergency exit guide signs.

본 논문에서는 동적으로 설정되는 피난 유도 표지에 실시간 화재 상황을 반영한 최적의 피난 경로를 제시하는 LoRa 기반 피난 유도 체계를 설계하고 구현한다. 각 피난 유도 표지는 전후좌우를 나타내는 4개의 LED 지시등으로 구성되고 화재 발생 시 실시간으로 계산된 최적의 대피 경로를 화살표로 표시한다. 제안 알고리즘의 검증을 위해 동적인 화재 상황을 모의 생성하는 시뮬레이션 환경을 구축하여 다양한 지점에서 화재가 발생했을 때 각각의 피난 유도 표지가 정확한 피난 경로를 안내하는지 여부를 검증하였다. 또한 LoRa 기반 무선통신의 성능 확인을 위해 실내, 실내 대 실외, 실외 환경에서 데이터 전송률을 측정하였다. 제안하는 시스템은 다수의 피난 유도 표지 설치 외에는 시스템 운영을 위한 추가 설비가 필요 없다는 측면에서 대형 건물은 물론 중소형 건물에도 쉽게 적용할 수 있다.

Keywords

References

  1. E. Baek, G. Baek, H. Shin, M. Song, C. Kook, and S. Kim, "A Study on the Awareness of Fire Safety and Evacuation Guide System," Journal of Korean Institute of Fire Science and Engineering, vol. 24, no. 6, pp. 45-53, Dec. 2010.
  2. J. Yoon, Y. Jin, S. Park, and H. Lee, "Customized Evacuation Pathfinding through WSN-Based Monitoring in Fire Scenarios," Journal of Korean Institute of Communications and Information Sciences, vol.41 no.11, pp. 1661-1670, Nov. 2016. https://doi.org/10.7840/kics.2016.41.11.1661
  3. D. J. Cheon, D. Y. Jung, and D. K. Kwak, "A study on the implementation of zigbee sensor node for building USN using only transmission of fire sensing data," Fire Science and Engineering, vol. 23, no. 6, pp. 75-81, Dec. 2009.
  4. Y. Li, Z. Wang, and Y. Song, "Wireless sensor network design for wildfire monitoring," WCICA 2006, Dalian, China, 2006.
  5. J. H. Lee, W. J. Kim, and J. C. Lee, "A literature review on compartment fire temperatures during fully developed fire," Journal of Architectural Institution of Korea Structure & Construction, vol. 30, no. 10, pp. 21-28, Oct. 2014.
  6. M. Barnes, H. Leather, and D. Arvind, "Emergency evacuation using wireless sensor networks," in Proceedings of 32nd IEEE LCN 2007, pp. 851-857, 2007.
  7. H. Kang, "A Study on Analysis of Intelligent Video Surveillance Systems for Societal Security," Journal of Digital Contents Society, vol.17, no. 4, pp. 273-278, Aug. 2016. https://doi.org/10.9728/dcs.2016.17.4.273
  8. E. R. Cho, "Gyonggi with Safety: Reduction of Mobilization Time," Issue & Analysis 2015, no. 179, pp. 1-25, 2015.
  9. LoRa, LoRa Allince [Internet]. Available: https://www.lora-alliance.org/.
  10. J. Choi, D. Park, and K. Chung, "A Study on Safety Design Colors of Evacuation Guidance Sign in Case of Fire - Focused on Exit Light," Journal of Korea Society of Color Studies, vol. 28, no. 3, pp. 39-47, Aug. 2014.
  11. J. Cho, "A Study of USN-based Smart Fire Protection System Design which Leads the Emergency Escape," Journal of the Korean Society of Design Culture, vol. 21, no. 4, pp. 648-660, Dec. 2015.
  12. J. H. Ko, D. K. Han, S. R. Lee, H. Y. Park, and D. H. Kim, "Implementation of GPS-based Wireless Loss Prevention System using the LoRa Module," Journal of Digital Contents Society, vol. 18, no. 4, pp. 761-768, Jul. 2017. https://doi.org/10.9728/DCS.2017.18.4.761
  13. S. Skiena, The Algorithm Design Manual, Springer, 2008.
  14. B. Kim and S. Eun, "Design and Implementation of On-line Instruction Manual System," Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 3, pp. 411-417, Mar. 2018. https://doi.org/10.6109/JKIICE.2018.22.3.411