Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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A Study on a Development of Automated Measurement Sensor for Forest Fire Surface Fuel Moistures

산불연료습도 자동화 측정센서 개발에 관한 연구

  • YEOM, Chan-Ho (Professional Graduate School of Disaster Prevention, Kangwon National University) ;
  • LEE, Si-Young (Professional Graduate School of Disaster Prevention, Kangwon National University) ;
  • PARK, Houng-Sek (Graduate School of Forestry, Dongguk University) ;
  • WON, Myoung-Soo (Forest Resource Management and Restoration Division, National Institute of Forest Science)
  • Received : 2020.07.28
  • Accepted : 2020.11.06
  • Published : 2020.11.25
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Abstract

In this study, an automated sensor to measure forest fire surface fuel moistures was developed to predict changes in the moisture content and risk of forest fire surface fuel, which was indicators of forest fire occurrence and spread risk. This measurement sensor was a method of automatically calculating the moisture content of forest fire surface fuel by electric resistance. The proxy of forest fire surface fuel used in this sensor is pine (50 cm long, 1.5 cm in diameter), and the relationship between moisture content and electrical resistance, R(R:Electrical resistance)=2E(E:Exponent of 10)+13X(X:Moisture content)-9.705(R2=0.947) was developed. In addition, using this, the software and case of the automated measurement sensor for forest fire surface fuel moisture were designed to produce a prototype, and the suitability (R2=0.824) was confirmed by performing field monitoring verification in the forest. The results of this study would contribute to develop technologies that can predict the occurrence, spread and intensity of forest fires, and are expected to be used as basic data for advanced forest fire risk forecasting technologies.

본 연구는 산불의 발생과 확산위험성의 지표인 산불연료의 수분함량과 산불위험도의 변화를 예측하기 위한 산불연료습도 자동화 측정센서를 개발하였다. 이 측정센서는 산불연료의 함수율을 전기저항으로 측정하여 자동으로 산불연료의 함수율을 산정하는 방법이다. 이 센서에 사용된 산불연료는 소나무(길이 50cm, 직경 1.5cm)이고, 함수율과 전기저항과의 관계를 추정하는 전기저항=2E(E:Exponent of 10)+13X(X:함수율)-9.705(R2=0.947)인 환산식을 개발하였다. 또한, 이를 이용하여 자동화된 산불연료습도 자동화 측정센서의 소프트웨어와 함체를 설계하여 시제품을 제작하였고, 이를 다시 산림 내에서 현장 모니터링 검증을 실시하여 적합성(R2=0.824)을 확인하였다. 본 연구결과는 산불의 발생, 확산과 강도를 예측할 수 있는 기술의 개발에 도움을 주며, 산불위험예보 기술의 고도화를 위한 기초자료로 활용될 것으로 기대된다.

Keywords

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