Sensors 2011, 11(5), 4539-4561; doi:10.3390/s110504539
Article

Study on the Context-Aware Middleware for Ubiquitous Greenhouses Using Wireless Sensor Networks

Received: 20 February 2011; in revised form: 2 April 2011 / Accepted: 10 April 2011 / Published: 27 April 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Wireless Sensor Network (WSN) technology is one of the important technologies to implement the ubiquitous society, and it could increase productivity of agricultural and livestock products, and secure transparency of distribution channels if such a WSN technology were successfully applied to the agricultural sector. Middleware, which can connect WSN hardware, applications, and enterprise systems, is required to construct ubiquitous agriculture environment combining WSN technology with agricultural sector applications, but there have been insufficient studies in the field of WSN middleware in the agricultural environment, compared to other industries. This paper proposes a context-aware middleware to efficiently process data collected from ubiquitous greenhouses by applying WSN technology and used to implement combined services through organic connectivity of data. The proposed middleware abstracts heterogeneous sensor nodes to integrate different forms of data, and provides intelligent context-aware, event service, and filtering functions to maximize operability and scalability of the middleware. To evaluate the performance of the middleware, an integrated management system for ubiquitous greenhouses was implemented by applying the proposed middleware to an existing greenhouse, and it was tested by measuring the level of load through CPU usage and the response time for users’ requests when the system is working.
Keywords: WSN; ubiquitous society; agriculture; context-aware; middleware; greenhouse
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MDPI and ACS Style

Hwang, J.; Yoe, H. Study on the Context-Aware Middleware for Ubiquitous Greenhouses Using Wireless Sensor Networks. Sensors 2011, 11, 4539-4561.

AMA Style

Hwang J, Yoe H. Study on the Context-Aware Middleware for Ubiquitous Greenhouses Using Wireless Sensor Networks. Sensors. 2011; 11(5):4539-4561.

Chicago/Turabian Style

Hwang, Jeonghwang; Yoe, Hyun. 2011. "Study on the Context-Aware Middleware for Ubiquitous Greenhouses Using Wireless Sensor Networks." Sensors 11, no. 5: 4539-4561.

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