臺灣博碩士論文加值系統

依照目前IoT的進展看起來，隨著技術上的突破，這些連接末端的設備將會在未來幾年內呈現指數性爆炸的成長，但目前所擁有的技術都不適合做為低成本與距離遠的開發。本論文的目的在建置一套遠距離的IoT平台系統，其系統擁有KM級的傳輸距離、低功耗、低成本、多種硬體介面溝通和雲端平台連接，並透過Tree-Star network架構達到網路不斷線安全設計，藉以改善目前技術上的缺陷。

本論文使用Arduino IDE作為開發工作，所採用的硬體包括Arduino Nano、LinkIt™ ONE開發版、SX1278晶片、BMP180氣壓感測模組、DHT11溫溼度感測模組和光敏電阻。各個從端依照不同的傳輸方式將感測器資料回傳給主端並透過Internet上傳至雲端，供使用者能在電腦與手機視窗觀看資料，當有其中的從端損毀都會透過資料回傳並顯示在介面上，以便檢修與架設。

According to the development of the IoT nowadays, by the technological breakthroughs, the requirement and the function of these connected devices will exponentially explode in the last few years. However, the techniques in the present are not proper to be applied to develop the productions at a low cost and the remote control. The purpose of this thesis is to build a remote control platform system which includes the Km level transmission distance, a low power dissipation, a low cost, many kinds of interface for communication hardware and connection of cloud platform. As a safe design, it prevents the network being disconnected by using the Tree-Star network structure. Therefore, those detects of the techniques in the present can be improved well.

In this thesis, Arduino IDE is used to develop the system, by using the Arduino Nano, LinkIt™ ONE microcontroller board, SX1278 chip, BMP180 barometric pressure sensor, DHT11 temperature and humidity sensor and the photoresistor. The Master is programmed to request, and then read the data of sensor which is sent in different ways from the uniquely addressed Slave. Then the data will be uploaded to the cloud on the Internet. Once the message is received, it can be viewed in the users’ computer or the cell phone monitor window. If any Slave is broken, it will show the details and data on the interface for the convenience to check, fix, debug or build.

摘要 i
ABSTRACT ii
致謝 iii
目錄 iv
圖目錄 vi
表目錄 viii
第一章 緒論 1
1.1. 前言 1
1.2. 研究目的與動機 2
第二章 文獻回顧 7
2.1 現行物聯網架構 7
2.2 Wi-Fi、ZigBee、BlueTooth比較 8
2.3 LPWAN簡介 10
2.4 LoRa簡介 13
第三章 研究方法 21
3.1 現有架構-Star network拓墣 24
3.2 Tree-Star network拓樸 26
3.3 封包規範 31
3.3.1 建立網路的封包規範 31
3.3.2 傳輸資料的封包規範 32
第四章 系統設計 38
4.1 系統架構 38
4.2 硬體架構 41
4.2.1 LinkIt™ ONE開發版 42
4.2.2 SX1278 43
4.2.3 感測器 51
4.3 軟體架構 52
4.3.1 設計封包 52
4.3.2 主端軟體流程 57
4.3.3 樹狀從端軟體流程 60
4.3.4 星狀從端軟體流程 64
第五章 實驗結果 66
5.1 硬體配置 66
5.2 實驗設計 68
5.2.1 佈點測試 68
5.2.2 錯誤檢知與圖表顯示測試 70
第六章 結論 77
6.1 C-type LoRa模組耗電性問題 77
6.2 遠距離傳輸資料 77
6.3 Tree-Star架構可靠性與成本 78
6.4 多樣化的硬體溝通方式 78
6.5 雲端連接 78
6.6 應用場合 79
第七章、參考文獻 80

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