Wireless Sensor Network for Monitoring Maturity Stage of Fruit

• 作者: A. Kanjanavapastit J. Varith M. Krairiksh
• 来源期刊: 无线传感网络(英文)
• 学科: 医学
• 关键词: FRUIT SENSOR MATURITY Stage MONITORING Wireless SENSOR Network Pre-Harvest Control
• 年，卷（期）: 2011,（9）
• 页码范围: 318-321
• 页数: 4页
• 分类号: R73

摘要

In this letter, we present a wireless sensor network for monitoring the maturity stage of fruit. A dual-polari- zation coupled patch sensor, which is robust to environmental changes, was designed to operate at 2.45 GHz. It was attached to a Durian fruit for a period of days to measure the magnitude of mutual coupling corresponding mainly to the starch concentration of its pulp. Signal was transmitted from a sensor node, via tree nodes, to a master node that displays the variations occurring in the period. The maximum mutual coupling occurred at the maturity stage of 60% whereas the minimum occurred at 70%. These results demonstrate that this wireless sensor network can enable fruit growers to harvest their Durians at an appropriate time, providing a reliable quality control for export.