A SMART WIRELESS ACCESS GATEWAY FOR RADIATION SENSORS

Yasser Abdelmageed Abdou Amer


Abstract


The increased number of smart devices, user devices and sensors/actuators, has introduced a new architecture called IoT (Internet of Things) that is responsible for the interconnections of these smart devices and the end user through the Internet. Smart things have computational, storage, and communication capabilities, but with limited amounts. The current approach of connecting sensors to the Internet is through the cloud central servers. The cloud computing is a helpful architecture in some situations which need excessive processing tasks. But it has some drawbacks as well, concerning the real time interactions where the long path from the sensors to the central server can impact the service quality, especially for applications that are latency dependent such as AR (Augmented Reality) situations. Moreover, with the increased number of smart devices, the network will be consumed with the current approach of cloud computing. Cloud computing is not location aware. Finally privacy in the current cloud computing approach is not so good, as the data is stored in a central place operated by the dominating companies like Google, Microsoft and Facebook. Fog computing on the other hand, extends the role of cloud computing to the edge of the network. Thus it overcomes the previously mentioned drawbacks of cloud computing, as fog computing has characteristics of low latency, location awareness, geographical distribution, mobility support, and real time interactions. Our approach in this thesis is to propose a smart wireless access gateway that extends the role of current Wi-Fi access points to serve both IoT and fog computing. The smart wireless access gateway is based on a programmable platform which enables it to do the proposed functionalities. At first, we introduce the Wi-Fi access point functionality and compare its performance with another commercial Wi-Fi access point. Then, we show different use cases of the smart gateway as an IoT enabler through the use of different wireless standards: Wi-Fi, BLE (Bluetooth Low Energy) and Zigbee. Finally, we show how to use the smart gateway as a Fog networks enabler. As a use case, we used the smart wireless access gateway to support the wireless connectivity of radiation sensors by showing three scenarios: digital and analog data transmitting and commands sending. To show the fog computing capabilities, we show two cases of how to use the smart gateway as a local caching device using a mobile App to send the caching request remotely through the Internet. The other case shows how to use the smart gateway as a content provider to other smart gateways in the network through providing the cached content to other smart gateways. As a conclusion the practical tests show the capability of the proposed wireless access gateway to do the three proposed functionalities of (1) providing wireless Internet access to users, (2) IoT enabling with multiple IoT wireless interfaces, and (3) Fog networks enabling with caching and processing capabilities.


Other data

Other Titles بوابة توصيل لاسلكية ذكية لمستشعرات الاشعاع
Issue Date 2017
URI http://research.asu.edu.eg/handle/12345678/2992


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