Building a Gateway to the Internet of Things Base on USB Interface

• Main Authors: Yan-Pei Chen, 陳彥霈
• Other Authors: 江正雄
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/67243297483103678301

碩士 === 淡江大學 === 電機工程學系碩士在職專班 === 104 === This research proposes a quick establishment of plug and play gateway to the Internet of Things based on USB port, which is common in all electronic devices. USB Association has defined the Ethernet control model and Ethernet simulation model in communication subcategory. With this approach, the USB port can be simulated as an Ethernet transmission port so that fast connection and data transmission is possible based on USB Ethernet communication among different devices. This is one of the applications for the simple, quick and low-cost to the Internet of Things. In tests with two commonly used network protocols, Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), the throughput was 50M-56Mbit/s in transmission speed in a shielding chamber with all environment interference isolated. However, in an open environment, throughput of USB 2.0 and USB 3.0 were respectively 92 - 99 M bit/s and 249 - 263 M bit/s in transmission speed. In UDP packet loss rate tests, the loss rates were between approximately 3.4% - 12.9% while 0.73% - 1.05% and 0.69% - 2.2% respectively in USB 2.0 and USB 3.0 tests. Our results indicated that the USB Ethernet transmission was better than the wireless transmission in both transmission throughput and packet loss rate. From the test results, the USB Ethernet transmission was better than the wireless transmission for more stable transmission speed and lower packet loss rate. In addition, the wireless transmission is easily disturbed by the 2.4GHz radio wave in the environment. This direct accessibility of internet information through the establishment of gateway to Internet of Things based on USB Ethernet connection to smart electronic devices is currently uncommon.