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Open AccessArticle

From WSN towards WoT: Open API Scheme Based on oneM2M Platforms

School of Electrical and Electronic Engineering, College of Engineering, Yonsei University, Seoul 03722, Korea
IoT Platform Research Center, Korea Electronics Technology Institute, Seongnam 13509, Korea
Dept of Internet of Things, SCH Media Labs, Soonchunhyang University, Asan 31538, Korea
Author to whom correspondence should be addressed.
Sensors 2016, 16(10), 1645;
Received: 3 July 2016 / Accepted: 27 September 2016 / Published: 6 October 2016
Conventional computing systems have been able to be integrated into daily objects and connected to each other due to advances in computing and network technologies, such as wireless sensor networks (WSNs), forming a global network infrastructure, called the Internet of Things (IoT). To support the interconnection and interoperability between heterogeneous IoT systems, the availability of standardized, open application programming interfaces (APIs) is one of the key features of common software platforms for IoT devices, gateways, and servers. In this paper, we present a standardized way of extending previously-existing WSNs towards IoT systems, building the world of the Web of Things (WoT). Based on the oneM2M software platforms developed in the previous project, we introduce a well-designed open API scheme and device-specific thing adaptation software (TAS) enabling WSN elements, such as a wireless sensor node, to be accessed in a standardized way on a global scale. Three pilot services are implemented (i.e., a WiFi-enabled smart flowerpot, voice-based control for ZigBee-connected home appliances, and WiFi-connected AR.Drone control) to demonstrate the practical usability of the open API scheme and TAS modules. Full details on the method of integrating WSN elements into three example systems are described at the programming code level, which is expected to help future researchers in integrating their WSN systems in IoT platforms, such as oneM2M. We hope that the flexibly-deployable, easily-reusable common open API scheme and TAS-based integration method working with the oneM2M platforms will help the conventional WSNs in diverse industries evolve into the emerging WoT solutions. View Full-Text
Keywords: wireless sensor network; Internet of Things; Web of Things; oneM2M; open API wireless sensor network; Internet of Things; Web of Things; oneM2M; open API
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Kim, J.; Choi, S.-C.; Ahn, I.-Y.; Sung, N.-M.; Yun, J. From WSN towards WoT: Open API Scheme Based on oneM2M Platforms. Sensors 2016, 16, 1645.

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