物聯網(Internet of Things，IoT)隨著近年來資通訊技術(Information and Communication Technology，ICT)的發展進步，是繼互聯網(Internet)及人聯網(People Network)蓬勃發展後，近來也受到舉世大眾的關注，成為全球電信營運商及物聯網相關業界未來的新藍海商機及新商業模式，因為物聯網可應用的產業廣泛眾多，而各種物聯網技術適用場景要求不一，主要功能都希望能自動化及大量化感測物件(Things)狀態，以供作後續大數據(Big Data)收集、人工智慧(AI)判斷及決策管理參考。
關於能用於自動化及大量化感測物件(Things)狀態的物聯網技術中，其中LoRa(Long Range)長距離技術具有低功耗、遠距離、低速率、低成本及收容大量節點的特性，它運作在免執照的Sub-GHz 頻段，建置成本上則省下頻率使用費，相較於2.4GHz及5GHz高頻頻段訊號涵蓋範圍較廣，由於功耗低運作所以可採電池供電，傳輸速率僅為0.3~50kbps，射頻晶片相對簡單及價廉。
本論文透過自行建構小型星狀LoRa廣域網路(LoRaWAN) 針對於居家及社區場景物聯網感測及控制訊息來進行試驗及應用情境實驗，由所得結果可驗證LoRa技術可針對溫濕度、一氧化碳、空氣微粒、交流電流及三軸加速度等傳感器將感測數據上傳至ThingSpeak雲端物聯網平台供遠端電腦或行動終端查閱，並可由物聯網平台設定臨界條件觸發出警示通知遠端行動終端，以及可透過物聯網平台下達TalkBack指令來控制繼電器及直流風扇等致動器，可作為居家、社區及廠房日常感測與控制應用。另外以兩個LoRa節點建構對等直連式架構，可依傳感器節點之感測溫度值透過LoRa通訊來調控致動器節點之直流風扇轉速，及以三個LoRa節點建構對等中繼式架構，可依傳感器節點之感測光照度值透過LoRa通訊傳送至中繼節點轉送至致動器節點來調控直流風扇轉速，可作為延伸涵蓋用。

Internet of Things (IoT), along with the development of Information and Communication Technology (ICT) in recent years, has recently gained popularity among the world after the Internet and the People Network. The focus has become a new blue ocean business opportunity and new business model for the global telecom operators and the Internet of Things related industries. Because the Internet of Things has a wide range of industries, and various IoT technologies have different application requirements. The main functions are expected to be automated, and a large number of sensing objects (Things) status for subsequent Big Data collection, artificial intelligence (AI) judgment and decision management reference.
Regarding to the Internet of Things technology that can be used to automate and mass the sensing of the Things state, LoRa (Long Range) technology has low power consumption, long distance, low speed, low cost and a large number of nodes. It operates in the license-free Sub-GHz band, and the cost of the installation saves the frequency usage fee. Compared with the 2.4GHz and 5GHz high-frequency bands, the signal coverage is wider. Due to the low power consumption, the battery can be powered, the transmission rate is only for 0.3~50kbps, and RF chips are relatively simple and inexpensive.
This thesis uses the self-constructed small star topology LoRa Wide Area Network (LoRaWAN) to test and apply the situational experiment for the IoT sensing and control information of the home and community scenes. The results can be verified by that the LoRa technology can be used for temperature, humidity, carbon monoxide, air particles, alternating current and tri-axis acceleration sensors upload the sensing data to the ThingSpeak cloud IoT platform for remote computer or mobile terminal access. They can be triggered by the IoT platform to set a critical condition to trigger a notification to the remote mobile terminal. The Internet of Things platform provides TalkBack commands to control actuators such as Relays and DC fans. They can be used as a daily sensing and control application for home, community and plant. In addition, two LoRa nodes are used to construct the Ad-hoc direct architecture, which can control the DC fan speed of aculator node through the LoRa communication by the sensor node sensed temperature. Three LoRa nodes construct the Ad-hoc relay architecture. The sensor node sensed photometric value is transmitted to the relay node through LoRa communication and transferred to the aculator node to regulate the DC fan speed. It can be used to extend coverage.

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