Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Development Status of Crowdsourced Ground Vibration Data Collection System Based on Micro-Electro-Mechanical Systems (MEMS) Sensor

MEMS 센서 기반 지반진동 정보 크라우드소싱 수집시스템 개발 현황

  • Lee, Sangho (Geoscience Platform Division, Korea Institute of Geoscience and Mining Resources) ;
  • Kwon, Jihoe (Geoscience Platform Division, Korea Institute of Geoscience and Mining Resources) ;
  • Ryu, Dong-Woo (Geoscience Platform Division, Korea Institute of Geoscience and Mining Resources)
  • 이상호 (한국지질자원연구원 지오플랫폼연구본부) ;
  • 권지회 (한국지질자원연구원 지오플랫폼연구본부) ;
  • 류동우 (한국지질자원연구원 지오플랫폼연구본부)
  • Received : 2018.12.04
  • Accepted : 2018.12.18
  • Published : 2018.12.31
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Abstract

Using crowdsourced sensor data collection technique, it is possible to collect high-density ground vibration data which is difficult to obtain by conventional methods. In this study, we have developed a crowdsourced ground vibration data collection system using MEMS sensors mounted on small electronic devices including smartphones, and implemented client and server based on the proposed infrastructure system design. The system is designed to gather vibration data quickly through Android-based smartphones or fixed devices based on Android Things, minimizing the usage of resource like power usage and data transmission traffic of the hardware.

크라우드소싱을 활용한 센서 자료 수집은 기존의 방식으로 얻기 어려운 고밀도 지반 진동 정보의 수집이 가능하다. 본 연구에서는 스마트폰과 같은 소형 전자기기에 탑재된 MEMS 센서를 활용한 크라우드소싱 방식 지반 진동 수집 시스템을 개발하였으며, 이를 위한 기반 체계 설계 및 클라이언트와 서버에 대한 구현을 수행하였다. 해당 시스템은 Android 기반의 스마트폰이나 Android Things 기반의 고정식 장비를 통해 진동 데이터를 신속히 수집하면서 하드웨어의 전력 및 데이터 사용량을 최소화할 수 있도록 설계되었다.

Keywords

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Fig. 1. Overall server-client data flow diagram of proposed data collection system

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Fig. 2. Data and message handling procedure during ground vibration event

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Fig. 3. Result of battery voltage measurement with sensor activated for 2 hours in every 8 hours

Table 1. Comparison of major functionalities between MyShake, Earthquake Network (EN) and proposed system

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