위치기반 유해환경 모니터링 시스템

This paper proposes method of flexible position based hazardous environmental data detection with low power consumption for human protection from hazardous gas in enclosed or underground area. Proposed method considers indoor positioning using BLE's RSSI without GPS data, and sends data including hazardous environmental module data to monitoring server system. Hazardous environmental detection module contains CO2, VOC, temperature, and humidity with RSSI, broadcasts these data to AP regularly. Proposed module is designed to achieve low power BLE structure with battery, variable set-up position in order to detect environmental data more easily. Also, lifetime of proposed module achieves more than 3.5 month lifetime guarantee using ICR18650-22 lithium battery. From the experimental result, multiple environmental data detection module is used in enclosed indoor case, it is approved that convenience is effective from position based hazardous environmental data detection for human protection.