Research & Implementation of the Embedded Wi-Fi Technologies for IoT Applications

• Main Authors: Chung-Yao Chen, 陳宗耀
• Other Authors: Bin-Chang Chieu
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/bv7jfm

碩士 === 國立臺灣科技大學 === 電子工程系 === 106 === The Internet has thrived and offers a variety of innovative services that make the Internet a part of life. Based on the technical foundation of the Internet, the Internet of Things is born and grows rapidly. In 2020, it is very attractive that the market scale of more than 50 billion devices connected to the Internet. A large number of devices are connected to the Internet. To maintain normal operations, a robust network protocol is required. In most IoT applications, devices are demanding in terms of light weight, miniaturization, and low power consumption. Therefore, the research procedure is set up to: understand the network principle and the hierarchical operation of protocol; explore the WLAN architecture, build the wireless LAN; study MQTT protocol standard of the IoT application layer. The research goal is to integrate embedded Wi-Fi development modules to form a ubiquitous smart device, establish a message carrier connected to the network, connect to the cloud server to obtain services and achieve application through the Pub/Sub model. In the implementation, C++ is the programming language. After studying the API and protocol of the server and the client, it realized the IoT cloud connection with Wi-Fi as the physical layer and MQTT as the application layer. Finally, the verification is successful in the two implementation cases, and the message exchange through the publish/subscribe model is indeed achieved.