A Web-Based Monitoring System as a Measurement Tool in Greenhouses Using Wireless Sensor Networks
In this work, we propose a Web-based monitoring system using wire-less sensor networks (WSNs) to measure plant parameters and environmental factors in greenhouses. To detect and send these variables, e.g. leaf temperature, air humidity, a ZigBee-based WSN collects data, which is transmitted by GPRS modules and the Internet to a central computer, and all information, including the dynamic topology of WSNs, can be published via the Web. The system provides flexible configuration options for sensor nodes and transport downlink com-mands, i.e. sensors can be added or removed flexibly in a node without changing the hardware interface and data center service software. Also, the variance of the received signal strength indicator and link quality indicator (LQI) under different distributions of the growing plants was considered to estimate the network link quality to ensure reliable data transmission in the WSNs. Experiments show that the system is reliable, flexible, convenient, and provides good real-time and scalability characteristics.
monitoring system WSNs GPRS modules received signal strength indicator link quality indicator
Yuling Shi Zhongyi Wang Xu Liu Dongjie Zhao Huang
College of Information and Electrical Engineering, China Agricultural University,Beijing, 100083, P.R China
国际会议
南昌
英文
289-297
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）