Title: The National Weather Sensor Grid: a large-scale cyber-sensor infrastructure for environmental monitoring

Authors: Hock Beng Lim, Mudasser Iqbal, Wenqiang Wang, Yuxia Yao

Addresses: Intelligent Systems Center, Nanyang Technological University, Singapore. ' Intelligent Systems Center, Nanyang Technological University, Singapore. ' Intelligent Systems Center, Nanyang Technological University, Singapore. ' Intelligent Systems Center, Nanyang Technological University, Singapore

Abstract: A sensor grid integrates sensor networks with grid infrastructures to enable the real-time collection of sensor data, and the sharing of computational and storage resources for sensor data processing and management. We have developed a sensor grid architecture framework, called the Scalable Proxy-based aRchItecture for seNsor Grid (SPRING). Based on the SPRING framework, we designed the National Weather Sensor Grid (NWSG), a large-scale cyber-sensor infrastructure for environmental monitoring. The NWSG integrates mini weather stations deployed geographically across Singapore for weather data collection, processing and management. We have designed and implemented core sensor grid middleware components and services such as resource discovery, meta scheduling, job migration and security. The NWSG is designed to support long-term weather monitoring. The performance of the NWSG has been demonstrated in terms of reduction in latency for end-user response, significant improvement in overall system throughput, and even load balance across the sensor grid infrastructure.

Keywords: environmental sensor networks; grid computing; sensor grid; cyber-sensor infrastructures; environmental monitoring; middleware design; weather conditions; meterorological conditions; weather stations; Singapore; weather data; resource discovery; meta scheduling; job migration; security; weather monitoring.

DOI: 10.1504/IJSNET.2010.031847

International Journal of Sensor Networks, 2010 Vol.7 No.1/2, pp.19 - 36

Received: 23 Dec 2007
Accepted: 20 Jun 2008
Published online: 26 Feb 2010 *

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