近年來由於人口老化，智慧居家老人照護成為遠端幫助居家老年人的熱門技術。本文以電信業者的角度，提出針對智慧居家老人照護實現基於DTMF信令的物聯網遠端控制方法。我們利用IoTtalk實做出一個系統──DTMFTalk，它可以在電話通話期間通過傳統的電信網路傳輸DTMF信令，進而支援物聯網遠端控制。DTMFTalk會監控智慧型手機的通話狀態，從正在進行的通話中擷取DTMF鍵，並將DTMF鍵值發送到IoTtalk伺服器，接下來智慧居家老人照護設備就能從IoTtalk伺服器獲取最新物聯網指令。經過DTMFTalk的延遲測量實驗後，我們觀察到一般狀況下只要使用者有按住一定時間的所需DTMF鍵，DTMFTalk即可持續且準確地識別DTMF鍵進而完成智慧居家老人照護設備的遠端控制。

Smart elderly care becomes a popular technology to remotely assist the aged at home in recent years because of the population ageing. This thesis demonstrates the DTMF-based realization of IoT remote control for telecommunication operators to achieve the smart elderly-care service. By utilizing IoTtalk, we implement a system, DTMFTalk, which supports IoT remote control via conventional circuit-switched DTMF signaling during a phone call conversation. DTMFTalk can monitor the Call State of the smart phone, capture DTMF keys from the in progress call, and send the key values to the IoTtalk server. Afterwards, the smart elderly-care devices can gain the related IoT instructions from the IoTtalk server. Through the delay measurement experiment for DTMFTalk, we observe that DTMFTalk can constantly and accurately recognize the DTMF keys as long as the user holds the desired DTMF keys with enough period.

摘要 ... i
Abstract ... ii
Contents ... iii
List of Figures ... v
1 Introduction ... 1
2 IoTtalk overview ... 3
2.1 The detailed implementation of IoTtalk ... 3
2.2 The typical procedure of establishing the join connections ... 5
3 The Software Architecture of DTMFTalk ... 8
3.1 Overview of the DTMFTalk software modules ... 9
3.2 The functionalities of the Call Detecting Service ... 10
3.3 The functionalities of the RC Activity ... 12
3.4 DTMFTalk UI operation ... 14
4 The advance design for the DTMF Handler of DTMFTalk ... 17
4.1 The DTMF Handler structure ... 17
4.2 The processing steps in the Record Service thread ... 18
4.3 The processing steps in the Recognition Service thread ... 21
4.4 The processing steps in the Main thread ... 23
5 IoTtalk related settings ... 25
5.1 Create “DTMFTalk” project in the DTMFTalk GUI ... 25
5.2 The input device of IoTtalk ... 27
5.3 The output devices of IoTtalk ... 29
5.4 Join connection ... 30
6 Performance evaluation ... 33
6.1 Experiment methods ... 33
6.2 Experiment results ... 34
7 Conclusion ... 38
Bibliography ... 39

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